/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */ /* nautilus-icon-container.c - Icon container widget. Copyright (C) 1999, 2000 Free Software Foundation Copyright (C) 2000 Eazel, Inc. The Gnome Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The Gnome Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the Gnome Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Authors: Ettore Perazzoli , Darin Adler */ #include #include "nautilus-icon-container.h" #include "nautilus-background.h" #include "nautilus-font-factory.h" #include "nautilus-gdk-pixbuf-extensions.h" #include "nautilus-glib-extensions.h" #include "nautilus-global-preferences.h" #include "nautilus-gnome-extensions.h" #include "nautilus-gtk-extensions.h" #include "nautilus-gtk-macros.h" #include "nautilus-icon-private.h" #include "nautilus-icon-text-item.h" #include "nautilus-lib-self-check-functions.h" #include "nautilus-string.h" #include "nautilus-theme.h" #include #include #include #include #include #include #include #include #include #include #include /* Interval for updating the rubberband selection, in milliseconds. */ #define RUBBERBAND_TIMEOUT_INTERVAL 10 /* Internal double click time constant */ #define DOUBLE_CLICK_TIME 500000 /* Initial unpositioned icon value */ #define ICON_UNPOSITIONED_VALUE -1 /* Timeout for making the icon currently selected for keyboard operation visible. * If this is 0, you can get into trouble with extra scrolling after holding * down the arrow key for awhile when there are many items. */ #define KEYBOARD_ICON_REVEAL_TIMEOUT 10 #define CONTEXT_MENU_TIMEOUT_INTERVAL 500 /* Maximum amount of milliseconds the mouse button is allowed to stay down * and still be considered a click. */ #define MAX_CLICK_TIME 1500 /* Distance you have to move before it becomes a drag. */ #define SNAP_RESISTANCE 2 /* GMC has this set to 3, but it's too much for Ettore's taste. */ /* Button assignments. */ #define DRAG_BUTTON 1 #define RUBBERBAND_BUTTON 1 #define MIDDLE_BUTTON 2 #define CONTEXTUAL_MENU_BUTTON 3 /* Maximum size (pixels) allowed for icons at the standard zoom level. */ #define MINIMUM_IMAGE_SIZE 24 #define MAXIMUM_IMAGE_SIZE 96 #define MAXIMUM_EMBLEM_SIZE 48 #define ICON_PAD_LEFT 4 #define ICON_PAD_RIGHT 4 #define ICON_BASE_WIDTH 96 #define ICON_PAD_TOP 4 #define ICON_PAD_BOTTOM 4 #define CONTAINER_PAD_LEFT 4 #define CONTAINER_PAD_RIGHT 4 #define CONTAINER_PAD_TOP 4 #define CONTAINER_PAD_BOTTOM 4 #define EMBLEM_SCALE_FACTOR .75 #define STANDARD_ICON_GRID_WIDTH 145 /* Desktop layout mode defines */ #define DESKTOP_PAD_HORIZONTAL 30 #define DESKTOP_PAD_VERTICAL 10 #define CELL_SIZE 20 enum { NAUTILUS_TYPESELECT_FLUSH_DELAY = 1000000 /* After this time the current typeselect buffer will be * thrown away and the new pressed character will be made * the the start of a new pattern. */ }; static void activate_selected_items (NautilusIconContainer *container); static void nautilus_icon_container_initialize_class (NautilusIconContainerClass *class); static void nautilus_icon_container_initialize (NautilusIconContainer *container); static void nautilus_icon_container_theme_changed (gpointer user_data); static void compute_stretch (StretchState *start, StretchState *current); static NautilusIcon *get_first_selected_icon (NautilusIconContainer *container); static NautilusIcon *get_nth_selected_icon (NautilusIconContainer *container, int index); static gboolean has_multiple_selection (NautilusIconContainer *container); static void icon_destroy (NautilusIconContainer *container, NautilusIcon *icon); static void end_renaming_mode (NautilusIconContainer *container, gboolean commit); static NautilusIcon *get_icon_being_renamed (NautilusIconContainer *container); static void finish_adding_new_icons (NautilusIconContainer *container); static void update_label_color (NautilusBackground *background, NautilusIconContainer *icon_container); static void icon_get_bounding_box (NautilusIcon *icon, int *x1_return, int *y1_return, int *x2_return, int *y2_return); static gboolean is_renaming (NautilusIconContainer *container); static gboolean is_renaming_pending (NautilusIconContainer *container); static void process_pending_icon_to_rename (NautilusIconContainer *container); NAUTILUS_DEFINE_CLASS_BOILERPLATE (NautilusIconContainer, nautilus_icon_container, GNOME_TYPE_CANVAS) /* The NautilusIconContainer signals. */ enum { ACTIVATE, BAND_SELECT_STARTED, BAND_SELECT_ENDED, BUTTON_PRESS, CAN_ACCEPT_ITEM, COMPARE_ICONS, CONTEXT_CLICK_BACKGROUND, CONTEXT_CLICK_SELECTION, MIDDLE_CLICK, GET_CONTAINER_URI, GET_ICON_IMAGES, GET_ICON_TEXT, GET_ICON_URI, GET_ICON_DROP_TARGET_URI, GET_STORED_ICON_POSITION, ICON_POSITION_CHANGED, ICON_TEXT_CHANGED, RENAMING_ICON, LAYOUT_CHANGED, MOVE_COPY_ITEMS, CREATE_NAUTILUS_LINKS, PREVIEW, SELECTION_CHANGED, LAST_SIGNAL }; static guint signals[LAST_SIGNAL]; /* Bitmap for stippled selection rectangles. */ static GdkBitmap *stipple; static char stipple_bits[] = { 0x02, 0x01 }; /* Functions dealing with NautilusIcons. */ static void icon_free (NautilusIcon *icon) { /* Destroy this canvas item; the parent will unref it. */ gtk_object_destroy (GTK_OBJECT (icon->item)); g_free (icon); } static gboolean icon_is_positioned (const NautilusIcon *icon) { return icon->x != ICON_UNPOSITIONED_VALUE && icon->y != ICON_UNPOSITIONED_VALUE; } static void icon_set_position (NautilusIcon *icon, double x, double y) { NautilusIconContainer *container; int left, top, right, bottom; int width, height; int x1, y1, x2, y2; if (icon->x == x && icon->y == y) { return; } container = NAUTILUS_ICON_CONTAINER (GNOME_CANVAS_ITEM (icon->item)->canvas); if (icon == get_icon_being_renamed (container)) { end_renaming_mode (container, TRUE); } if (nautilus_icon_container_get_is_fixed_size (container)) { /* Clip the position of the icon within our desktop bounds */ left = GTK_WIDGET (container)->allocation.x; top = GTK_WIDGET (container)->allocation.y; right = left + GTK_WIDGET (container)->allocation.width; bottom = top + GTK_WIDGET (container)->allocation.height; icon_get_bounding_box (icon, &x1, &y1, &x2, &y2); width = x2 - x1; height = y2 - y1; if (x > right - width) { x = right - width; } if (x < left) { x = left; } if (y > bottom - height) { y = bottom - height; } if (y < top) { y = top; } } gnome_canvas_item_move (GNOME_CANVAS_ITEM (icon->item), x - icon->x, y - icon->y); icon->x = x; icon->y = y; } static void icon_get_size (NautilusIconContainer *container, NautilusIcon *icon, guint *size_x, guint *size_y) { if (size_x != NULL) { *size_x = MAX (nautilus_get_icon_size_for_zoom_level (container->details->zoom_level) * icon->scale_x, NAUTILUS_ICON_SIZE_SMALLEST); } if (size_y != NULL) { *size_y = MAX (nautilus_get_icon_size_for_zoom_level (container->details->zoom_level) * icon->scale_y, NAUTILUS_ICON_SIZE_SMALLEST); } } /* The icon_set_size function is used by the stretching user * interface, which currently stretches in a way that keeps the aspect * ratio. Later we might have a stretching interface that stretches Y * separate from X and we will change this around. */ static void icon_set_size (NautilusIconContainer *container, NautilusIcon *icon, guint icon_size, gboolean update_position) { guint old_size_x, old_size_y; double scale; icon_get_size (container, icon, &old_size_x, &old_size_y); if (icon_size == old_size_x && icon_size == old_size_y) { return; } scale = (double) icon_size / nautilus_get_icon_size_for_zoom_level (container->details->zoom_level); nautilus_icon_container_move_icon (container, icon, icon->x, icon->y, scale, scale, FALSE, update_position); } static void icon_raise (NautilusIcon *icon) { gnome_canvas_item_raise_to_top (GNOME_CANVAS_ITEM (icon->item)); } static void icon_toggle_selected (NautilusIconContainer *container, NautilusIcon *icon) { end_renaming_mode (container, TRUE); icon->is_selected = !icon->is_selected; gnome_canvas_item_set (GNOME_CANVAS_ITEM (icon->item), "highlighted_for_selection", (gboolean) icon->is_selected, NULL); /* If the icon is deselected, then get rid of the stretch handles. * No harm in doing the same if the item is newly selected. */ if (icon == container->details->stretch_icon) { container->details->stretch_icon = NULL; nautilus_icon_canvas_item_set_show_stretch_handles (icon->item, FALSE); } /* Raise each newly-selected icon to the front as it is selected. */ if (icon->is_selected) { icon_raise (icon); } } /* Select an icon. Return TRUE if selection has changed. */ static gboolean icon_set_selected (NautilusIconContainer *container, NautilusIcon *icon, gboolean select) { g_assert (select == FALSE || select == TRUE); g_assert (icon->is_selected == FALSE || icon->is_selected == TRUE); if (select == icon->is_selected) { return FALSE; } icon_toggle_selected (container, icon); g_assert (select == icon->is_selected); return TRUE; } static void icon_get_bounding_box (NautilusIcon *icon, int *x1_return, int *y1_return, int *x2_return, int *y2_return) { double x1, y1, x2, y2; gnome_canvas_item_get_bounds (GNOME_CANVAS_ITEM (icon->item), &x1, &y1, &x2, &y2); *x1_return = x1; *y1_return = y1; *x2_return = x2; *y2_return = y2; } /* Utility functions for NautilusIconContainer. */ gboolean nautilus_icon_container_scroll (NautilusIconContainer *container, int delta_x, int delta_y) { GtkAdjustment *hadj, *vadj; int old_h_value, old_v_value; hadj = gtk_layout_get_hadjustment (GTK_LAYOUT (container)); vadj = gtk_layout_get_vadjustment (GTK_LAYOUT (container)); /* Store the old ajustment values so we can tell if we * ended up actually scrolling. We may not have in a case * where the resulting value got pinned to the adjustment * min or max. */ old_h_value = hadj->value; old_v_value = vadj->value; nautilus_gtk_adjustment_set_value (hadj, hadj->value + delta_x); nautilus_gtk_adjustment_set_value (vadj, vadj->value + delta_y); /* return TRUE if we did scroll */ return hadj->value != old_h_value || vadj->value != old_v_value; } static void pending_icon_to_reveal_destroy_callback (NautilusIconCanvasItem *item, NautilusIconContainer *container) { g_assert (NAUTILUS_IS_ICON_CONTAINER (container)); g_assert (container->details->pending_icon_to_reveal != NULL); g_assert (container->details->pending_icon_to_reveal->item == item); container->details->pending_icon_to_reveal = NULL; } static NautilusIcon* get_pending_icon_to_reveal (NautilusIconContainer *container) { return container->details->pending_icon_to_reveal; } static void set_pending_icon_to_reveal (NautilusIconContainer *container, NautilusIcon *icon) { NautilusIcon *cur_pending; cur_pending = container->details->pending_icon_to_reveal; if (icon == cur_pending) { return; } if (cur_pending != NULL) { gtk_signal_disconnect_by_func (GTK_OBJECT (cur_pending->item), &pending_icon_to_reveal_destroy_callback, container); } if (icon != NULL) { gtk_signal_connect (GTK_OBJECT (icon->item), "destroy", pending_icon_to_reveal_destroy_callback, container); } container->details->pending_icon_to_reveal = icon; } static void reveal_icon (NautilusIconContainer *container, NautilusIcon *icon) { NautilusIconContainerDetails *details; GtkAllocation *allocation; GtkAdjustment *hadj, *vadj; ArtIRect bounds; if (!icon_is_positioned (icon)) { set_pending_icon_to_reveal (container, icon); return; } set_pending_icon_to_reveal (container, NULL); details = container->details; allocation = >K_WIDGET (container)->allocation; hadj = gtk_layout_get_hadjustment (GTK_LAYOUT (container)); vadj = gtk_layout_get_vadjustment (GTK_LAYOUT (container)); nautilus_gnome_canvas_item_get_canvas_bounds (GNOME_CANVAS_ITEM (icon->item), &bounds); if (bounds.y0 < vadj->value) { nautilus_gtk_adjustment_set_value (vadj, bounds.y0); } else if (bounds.y1 > vadj->value + allocation->height) { nautilus_gtk_adjustment_set_value (vadj, bounds.y1 - allocation->height); } if (bounds.x0 < hadj->value) { nautilus_gtk_adjustment_set_value (hadj, bounds.x0); } else if (bounds.x1 > hadj->value + allocation->width) { nautilus_gtk_adjustment_set_value (hadj, bounds.x1 - allocation->width); } } static void process_pending_icon_to_reveal (NautilusIconContainer *container) { NautilusIcon *pending_icon_to_reveal; pending_icon_to_reveal = get_pending_icon_to_reveal (container); if (pending_icon_to_reveal != NULL) { reveal_icon (container, pending_icon_to_reveal); } } static gboolean keyboard_icon_reveal_timeout_callback (gpointer data) { NautilusIconContainer *container; NautilusIcon *icon; container = NAUTILUS_ICON_CONTAINER (data); icon = container->details->keyboard_icon_to_reveal; g_assert (icon != NULL); /* Only reveal the icon if it's still the keyboard focus or if * it's still selected. Someone originally thought we should * cancel this reveal if the user manages to sneak a direct * scroll in before the timeout fires, but we later realized * this wouldn't actually be an improvement * (see bugzilla.eazel.com 612). */ if (icon == container->details->keyboard_focus || icon->is_selected) { reveal_icon (container, icon); } container->details->keyboard_icon_reveal_timer_id = 0; return FALSE; } static void unschedule_keyboard_icon_reveal (NautilusIconContainer *container) { NautilusIconContainerDetails *details; details = container->details; if (details->keyboard_icon_reveal_timer_id != 0) { gtk_timeout_remove (details->keyboard_icon_reveal_timer_id); } } static void schedule_keyboard_icon_reveal (NautilusIconContainer *container, NautilusIcon *icon) { NautilusIconContainerDetails *details; details = container->details; unschedule_keyboard_icon_reveal (container); details->keyboard_icon_to_reveal = icon; details->keyboard_icon_reveal_timer_id = gtk_timeout_add (KEYBOARD_ICON_REVEAL_TIMEOUT, keyboard_icon_reveal_timeout_callback, container); } static void clear_keyboard_focus (NautilusIconContainer *container) { if (container->details->keyboard_focus != NULL) { gnome_canvas_item_set (GNOME_CANVAS_ITEM (container->details->keyboard_focus->item), "highlighted_as_keyboard_focus", 0, NULL); } container->details->keyboard_focus = NULL; } /* Set @icon as the icon currently selected for keyboard operations. */ static void set_keyboard_focus (NautilusIconContainer *container, NautilusIcon *icon) { g_assert (icon != NULL); if (icon == container->details->keyboard_focus) { return; } clear_keyboard_focus (container); container->details->keyboard_focus = icon; gnome_canvas_item_set (GNOME_CANVAS_ITEM (container->details->keyboard_focus->item), "highlighted_as_keyboard_focus", 1, NULL); } static void get_all_icon_bounds (NautilusIconContainer *container, double *x1, double *y1, double *x2, double *y2) { /* FIXME bugzilla.eazel.com 2477: Do we have to do something about the rubberband * here? Any other non-icon items? */ gnome_canvas_item_get_bounds (GNOME_CANVAS (container)->root, x1, y1, x2, y2); } static void update_scroll_region (NautilusIconContainer *container, gboolean include_visible) { double x1, y1, x2, y2; GtkAdjustment *hadj, *vadj; float step_increment; GtkAllocation *allocation; if (nautilus_icon_container_get_is_fixed_size (container)) { /* Set the scroll region to the size of the container allocation */ allocation = >K_WIDGET (container)->allocation; nautilus_gnome_canvas_set_scroll_region_left_justify (GNOME_CANVAS (container), (double) allocation->x, (double) allocation->y, (double) allocation->width-1, (double) allocation->height-1); return; } get_all_icon_bounds (container, &x1, &y1, &x2, &y2); if (include_visible) { nautilus_gnome_canvas_set_scroll_region_include_visible_area (GNOME_CANVAS (container), x1 - CONTAINER_PAD_LEFT, y1 - CONTAINER_PAD_TOP, x2 + CONTAINER_PAD_RIGHT, y2 + CONTAINER_PAD_BOTTOM); } else { nautilus_gnome_canvas_set_scroll_region_left_justify (GNOME_CANVAS (container), x1 - CONTAINER_PAD_LEFT, y1 - CONTAINER_PAD_TOP, x2 + CONTAINER_PAD_RIGHT, y2 + CONTAINER_PAD_BOTTOM); } hadj = gtk_layout_get_hadjustment (GTK_LAYOUT (container)); vadj = gtk_layout_get_vadjustment (GTK_LAYOUT (container)); /* Scroll by 1/4 icon each time you click. */ step_increment = nautilus_get_icon_size_for_zoom_level (container->details->zoom_level) / 4; if (hadj->step_increment != step_increment) { hadj->step_increment = step_increment; gtk_adjustment_changed (hadj); } if (vadj->step_increment != step_increment) { vadj->step_increment = step_increment; gtk_adjustment_changed (vadj); } /* Now that we have a new scroll region, clamp the * adjustments so we are within the valid scroll area. */ nautilus_gtk_adjustment_clamp_value (hadj); nautilus_gtk_adjustment_clamp_value (vadj); } void nautilus_icon_container_update_scroll_region (NautilusIconContainer *container) { update_scroll_region (container, FALSE); } void nautilus_icon_container_update_scroll_region_include_visible_area (NautilusIconContainer *container) { update_scroll_region (container, TRUE); } static NautilusIconContainer *sort_hack_container; static int compare_icons (gconstpointer a, gconstpointer b) { const NautilusIcon *icon_a, *icon_b; int result; icon_a = a; icon_b = b; result = 0; gtk_signal_emit (GTK_OBJECT (sort_hack_container), signals[COMPARE_ICONS], icon_a->data, icon_b->data, &result); return result; } static void sort_icons (NautilusIconContainer *container, GList **icons) { sort_hack_container = container; *icons = g_list_sort (*icons, compare_icons); } static void resort (NautilusIconContainer *container) { sort_icons (container, &container->details->icons); } /* Given an icon's bounds, compute the width of the space it should be * placed in. */ static int get_icon_space_width (NautilusIconContainer *container, const ArtDRect *bounds) { double world_width; world_width = ICON_PAD_LEFT + (bounds->x1 - bounds->x0) + ICON_PAD_RIGHT; if (container->details->tighter_layout) { return world_width + 8; /* 8 pixels extra for fancy selection box */ } if (world_width > STANDARD_ICON_GRID_WIDTH) return world_width; return STANDARD_ICON_GRID_WIDTH; } static void lay_down_one_line (NautilusIconContainer *container, GList *line_start, GList *line_end, double *y) { GList *p; double max_height_above, max_height_below; NautilusIcon *icon; ArtDRect bounds, icon_bounds; double height_above, height_below, x, width; g_assert (NAUTILUS_IS_ICON_CONTAINER (container)); g_assert (line_end == NULL || g_list_first (line_start) == g_list_first (line_end)); g_assert (y != NULL); /* Compute the total height above and below the baseline. */ max_height_above = 0; max_height_below = 0; for (p = line_start; p != line_end; p = p->next) { icon = p->data; nautilus_gnome_canvas_item_get_world_bounds (GNOME_CANVAS_ITEM (icon->item), &bounds); nautilus_icon_canvas_item_get_icon_rectangle (icon->item, &icon_bounds); height_above = icon_bounds.y1 - bounds.y0; height_below = bounds.y1 - icon_bounds.y1; if (height_above > max_height_above) { max_height_above = height_above; } if (height_below > max_height_below) { max_height_below = height_below; } } /* Advance to the baseline. */ *y += ICON_PAD_TOP + max_height_above; /* Lay out the icons along the baseline. */ x = 0; for (p = line_start; p != line_end; p = p->next) { icon = p->data; nautilus_gnome_canvas_item_get_world_bounds (GNOME_CANVAS_ITEM (icon->item), &bounds); nautilus_icon_canvas_item_get_icon_rectangle (icon->item, &icon_bounds); width = get_icon_space_width (container, &bounds); icon_set_position (icon, x + (width - (icon_bounds.x1 - icon_bounds.x0)) / 2, *y - (icon_bounds.y1 - icon_bounds.y0)); x += width; } /* Advance to next line. */ *y += max_height_below + ICON_PAD_BOTTOM; } static void lay_down_icons_horizontal (NautilusIconContainer *container, GList *icons, double start_y) { GList *p, *line_start; NautilusIcon *icon; ArtDRect bounds; double canvas_width, line_width, space_width, border_space_width, y; /* Lay out icons a line at a time. */ canvas_width = GTK_WIDGET (container)->allocation.width / GNOME_CANVAS (container)->pixels_per_unit; line_width = 0; line_start = icons; y = start_y; for (p = icons; p != NULL; p = p->next) { icon = p->data; /* Get the width of the icon. */ nautilus_gnome_canvas_item_get_world_bounds (GNOME_CANVAS_ITEM (icon->item), &bounds); space_width = get_icon_space_width (container, &bounds); /* we don't need the right-hand border space for the rightmost icon, so reduce the space width to compare with */ border_space_width = space_width * .75; /* If this icon doesn't fit, lay out the line that's queued up. */ if (line_start != p && line_width + border_space_width > canvas_width) { lay_down_one_line (container, line_start, p, &y); line_width = 0; line_start = p; } /* Add this icon. */ line_width += space_width; } /* Lay down that last line of icons. */ if (line_start != NULL) { lay_down_one_line (container, line_start, NULL, &y); } } /* Search for available space at location */ static gboolean find_open_grid_space (NautilusIcon *icon, int **icon_grid, int num_rows, int num_columns, int row, int column) { int row_index, column_index; int x1, x2, y1, y2; double width, height; int qwidth, qheight; /* Get icon dimensions */ icon_get_bounding_box (icon, &x1, &y1, &x2, &y2); width = x2 - x1; height = y2 - y1; /* Convert to grid coordinates */ qwidth = ceil (width / CELL_SIZE); qheight = ceil (height / CELL_SIZE); if (row + qwidth > num_rows) { qwidth = num_rows; } else { qwidth += row; } if (column + qheight > num_columns) { qheight = num_columns; } else { qheight += column; } for (row_index = row; row_index < qwidth; row_index++) { for (column_index = column; column_index < qheight; column_index++) { if (icon_grid [row_index] [column_index] == 1) { return FALSE; } } } return TRUE; } static void get_best_empty_grid_location (NautilusIcon *icon, int **icon_grid, int num_rows, int num_columns, int *x, int *y) { gboolean found_space; int row, column; g_assert (icon_grid != NULL); g_assert (x != NULL); g_assert (y != NULL); found_space = FALSE; /* Set up default fallback position */ *x = num_columns * CELL_SIZE; *y = num_rows * CELL_SIZE; /* Find best empty location */ for (row = 0; row < num_rows; row++) { for (column = 0; column < num_columns; column++) { found_space = find_open_grid_space (icon, icon_grid, num_rows, num_columns, row, column); if (found_space) { *x = row * CELL_SIZE; *y = column * CELL_SIZE; /* Correct for padding */ if (*x < DESKTOP_PAD_HORIZONTAL) { *x = DESKTOP_PAD_HORIZONTAL; } if (*y < DESKTOP_PAD_VERTICAL) { *y = DESKTOP_PAD_VERTICAL; } return; } } } } static void mark_icon_location_in_grid (NautilusIcon *icon, int **icon_grid, int num_rows, int num_columns) { int x1, x2, y1, y2; double width, height; int qx, qy, qwidth, qheight, qy_index; int grid_width, grid_height; icon_get_bounding_box (icon, &x1, &y1, &x2, &y2); width = x2 - x1; height = y2 - y1; /* Convert x and y to our quantized grid value */ qx = icon->x / CELL_SIZE; qy = icon->y / CELL_SIZE; qwidth = ceil (width / CELL_SIZE); qheight = ceil (height / CELL_SIZE); /* Check and correct for edge conditions */ grid_width = num_rows; grid_height = num_columns; if ((qx + qwidth) > grid_width) { qwidth = grid_width; } else { qwidth = qx + qwidth; } if ((qy + qheight) > grid_height) { qheight = grid_height; } else { qheight = qy + qheight; } /* Mark location */ for (; qx < qwidth; qx++) { for (qy_index = qy; qy_index < qheight; qy_index++) { icon_grid [qx] [qy_index] = 1; } } } static void mark_icon_locations_in_grid (GList *icon_list, int **icon_grid, int num_rows, int num_columns) { GList *p; NautilusIcon *icon; /* Mark filled grid locations */ for (p = icon_list; p != NULL; p = p->next) { icon = p->data; mark_icon_location_in_grid (icon, icon_grid, num_rows, num_columns); } } static void lay_down_icons_tblr (NautilusIconContainer *container, GList *icons) { GList *p, *placed_icons, *unplaced_icons; int index, total, new_length, placed; NautilusIcon *icon; int width, height, max_width, icon_width, icon_height; int x, y, x1, x2, y1, y2; int *grid_memory; int **icon_grid; int num_rows, num_columns; int row, column; /* Get container dimensions */ width = GTK_WIDGET (container)->allocation.width; height = GTK_WIDGET (container)->allocation.height; /* Determine which icons have and have not been placed */ placed_icons = NULL; unplaced_icons = NULL; total = g_list_length (container->details->icons); new_length = g_list_length (icons); placed = total - new_length; if (placed > 0) { /* Add only placed icons in list */ for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; if (icon_is_positioned (icon)) { placed_icons = g_list_append (placed_icons, icon); } else { icon->x = 0; icon->y = 0; unplaced_icons = g_list_append (unplaced_icons, icon); } } /* Allocate grid array */ num_rows = width / CELL_SIZE; num_columns = height / CELL_SIZE; /* Allocate array memory */ grid_memory = malloc (num_rows * num_columns * sizeof (int *)); g_assert (grid_memory); /* Allocate room for the pointers to the rows */ icon_grid = malloc (num_rows * sizeof (int)); g_assert (icon_grid); /* Point to array pointers */ for (index = 0; index < num_rows; index++) { icon_grid[index] = grid_memory + (index * num_columns); } /* Set all grid values to unfilled */ for (row = 0; row < num_rows; row++) { for (column = 0; column < num_columns; column++) { icon_grid [row] [column] = 0; } } /* Mark filled grid locations */ mark_icon_locations_in_grid (placed_icons, icon_grid, num_rows, num_columns); /* Place unplaced icons in the best locations */ for (p = unplaced_icons; p != NULL; p = p->next) { icon = p->data; get_best_empty_grid_location (icon, icon_grid, num_rows, num_columns, &x, &y); icon_set_position (icon, x, y); /* Add newly placed icon to grid */ mark_icon_location_in_grid (icon, icon_grid, num_rows, num_columns); } /* Clean up */ free (icon_grid); free (grid_memory); g_list_free (placed_icons); g_list_free (unplaced_icons); } else { /* There are no placed icons. Just lay them down using our rules */ x = DESKTOP_PAD_HORIZONTAL; y = DESKTOP_PAD_VERTICAL; max_width = 0; for (p = icons; p != NULL; p = p->next) { icon = p->data; icon_get_bounding_box (icon, &x1, &y1, &x2, &y2); icon_set_position (icon, x, y); icon_width = x2 - x1; icon_height = y2 - y1; y += icon_height + 10; /* Check for increase in column width */ if (max_width < icon_width) { max_width = icon_width; } /* Check and see if we need to move to a new column */ if (y > height - icon_height) { x += max_width + DESKTOP_PAD_VERTICAL; y = DESKTOP_PAD_VERTICAL; } } } /* These modes are special. We freeze all of our positions * after we do the layout. */ /* FIXME bugzilla.eazel.com 2478: * This should not be tied to the direction of layout. * It should be a separate switch. */ nautilus_icon_container_freeze_icon_positions (container); } static void lay_down_icons (NautilusIconContainer *container, GList *icons, double start_y) { switch (container->details->layout_mode) { case NAUTILUS_ICON_LAYOUT_L_R_T_B: lay_down_icons_horizontal (container, icons, start_y); break; case NAUTILUS_ICON_LAYOUT_T_B_L_R: case NAUTILUS_ICON_LAYOUT_T_B_R_L: /* FIXME bugzilla.eazel.com 2479: * Need to handle T_B_R_L differently. */ lay_down_icons_tblr (container, icons); break; default: g_assert_not_reached (); } } static void redo_layout_internal (NautilusIconContainer *container) { finish_adding_new_icons (container); /* Don't do any re-laying-out during stretching. Later we * might add smart logic that does this and leaves room for * the stretched icon, but if we do it we want it to be fast * and only re-lay-out when it's really needed. */ if (container->details->auto_layout && container->details->drag_state != DRAG_STATE_STRETCH) { resort (container); lay_down_icons (container, container->details->icons, 0); } nautilus_icon_container_update_scroll_region (container); process_pending_icon_to_reveal (container); process_pending_icon_to_rename (container); } static gboolean redo_layout_callback (gpointer callback_data) { NautilusIconContainer *container; container = NAUTILUS_ICON_CONTAINER (callback_data); redo_layout_internal (container); container->details->idle_id = 0; return FALSE; } static void unschedule_redo_layout (NautilusIconContainer *container) { if (container->details->idle_id != 0) { gtk_idle_remove (container->details->idle_id); container->details->idle_id = 0; } } static void schedule_redo_layout (NautilusIconContainer *container) { if (container->details->idle_id == 0 && container->details->has_been_allocated) { container->details->idle_id = gtk_idle_add (redo_layout_callback, container); } } static void redo_layout (NautilusIconContainer *container) { unschedule_redo_layout (container); redo_layout_internal (container); } static void reload_icon_positions (NautilusIconContainer *container) { GList *p, *no_position_icons; NautilusIcon *icon; gboolean have_stored_position; NautilusIconPosition position; ArtDRect bounds; double bottom; g_assert (!container->details->auto_layout); resort (container); no_position_icons = NULL; /* Place all the icons with positions. */ bottom = 0; for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; have_stored_position = FALSE; gtk_signal_emit (GTK_OBJECT (container), signals[GET_STORED_ICON_POSITION], icon->data, &position, &have_stored_position); if (have_stored_position) { icon_set_position (icon, position.x, position.y); nautilus_gnome_canvas_item_get_world_bounds (GNOME_CANVAS_ITEM (icon->item), &bounds); if (bounds.y1 > bottom) { bottom = bounds.y1; } } else { no_position_icons = g_list_prepend (no_position_icons, icon); } } no_position_icons = g_list_reverse (no_position_icons); /* Place all the other icons. */ lay_down_icons (container, no_position_icons, bottom + ICON_PAD_BOTTOM); g_list_free (no_position_icons); } /* Container-level icon handling functions. */ static gboolean button_event_modifies_selection (GdkEventButton *event) { return (event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK)) != 0; } static gboolean select_one_unselect_others (NautilusIconContainer *container, NautilusIcon *icon_to_select) { gboolean selection_changed; GList *p; NautilusIcon *icon; selection_changed = FALSE; for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; selection_changed |= icon_set_selected (container, icon, icon == icon_to_select); } return selection_changed; } static gboolean unselect_all (NautilusIconContainer *container) { return select_one_unselect_others (container, NULL); } void nautilus_icon_container_move_icon (NautilusIconContainer *container, NautilusIcon *icon, int x, int y, double scale_x, double scale_y, gboolean raise, gboolean update_position) { NautilusIconContainerDetails *details; gboolean emit_signal; NautilusIconPosition position; details = container->details; emit_signal = FALSE; if (icon == get_icon_being_renamed (container)) { end_renaming_mode (container, TRUE); } if (!details->auto_layout) { if (x != icon->x || y != icon->y) { icon_set_position (icon, x, y); emit_signal = update_position; } } if (scale_x != icon->scale_x || scale_y != icon->scale_y) { icon->scale_x = scale_x; icon->scale_y = scale_y; nautilus_icon_container_update_icon (container, icon); if (update_position) { redo_layout (container); emit_signal = TRUE; } } if (emit_signal) { position.x = x; position.y = y; position.scale_x = scale_x; position.scale_y = scale_y; gtk_signal_emit (GTK_OBJECT (container), signals[ICON_POSITION_CHANGED], icon->data, &position); } if (raise) { icon_raise (icon); } /* FIXME bugzilla.eazel.com 2474: * Handling of the scroll region is inconsistent here. In * the scale-changing case, redo_layout is called, which updates the * scroll region appropriately. In other cases, it's up to the * caller to make sure the scroll region is updated. This could * lead to hard-to-track-down bugs. */ } /* Implementation of rubberband selection. */ static void rubberband_select (NautilusIconContainer *container, const ArtDRect *previous_rect, const ArtDRect *current_rect) { GList *p; gboolean selection_changed, is_in; NautilusIcon *icon; selection_changed = FALSE; for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; is_in = nautilus_icon_canvas_item_hit_test_rectangle (icon->item, current_rect); g_assert (icon->was_selected_before_rubberband == FALSE || icon->was_selected_before_rubberband == TRUE); selection_changed |= icon_set_selected (container, icon, is_in ^ icon->was_selected_before_rubberband); } if (selection_changed) { gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } } static int rubberband_timeout_callback (gpointer data) { NautilusIconContainer *container; GtkWidget *widget; NautilusIconRubberbandInfo *band_info; int x, y; double x1, y1, x2, y2; double world_x, world_y; int x_scroll, y_scroll; ArtDRect selection_rect; widget = GTK_WIDGET (data); container = NAUTILUS_ICON_CONTAINER (data); band_info = &container->details->rubberband_info; g_assert (band_info->timer_id != 0); g_assert (GNOME_IS_CANVAS_RECT (band_info->selection_rectangle)); gdk_window_get_pointer (widget->window, &x, &y, NULL); if (x < 0) { x_scroll = x; x = 0; } else if (x >= widget->allocation.width) { x_scroll = x - widget->allocation.width + 1; x = widget->allocation.width - 1; } else { x_scroll = 0; } if (y < 0) { y_scroll = y; y = 0; } else if (y >= widget->allocation.height) { y_scroll = y - widget->allocation.height + 1; y = widget->allocation.height - 1; } else { y_scroll = 0; } if (y_scroll == 0 && x_scroll == 0 && (int) band_info->prev_x == x && (int) band_info->prev_y == y) { return TRUE; } nautilus_icon_container_scroll (container, x_scroll, y_scroll); gnome_canvas_window_to_world (GNOME_CANVAS (container), x, y, &world_x, &world_y); if (world_x < band_info->start_x) { x1 = world_x; x2 = band_info->start_x; } else { x1 = band_info->start_x; x2 = world_x; } if (world_y < band_info->start_y) { y1 = world_y; y2 = band_info->start_y; } else { y1 = band_info->start_y; y2 = world_y; } gnome_canvas_item_set (band_info->selection_rectangle, "x1", x1, "y1", y1, "x2", x2, "y2", y2, NULL); selection_rect.x0 = x1; selection_rect.y0 = y1; selection_rect.x1 = x2; selection_rect.y1 = y2; rubberband_select (container, &band_info->prev_rect, &selection_rect); gnome_canvas_item_raise_to_top (band_info->selection_rectangle); band_info->prev_x = x; band_info->prev_y = y; band_info->prev_rect = selection_rect; return TRUE; } static void start_rubberbanding (NautilusIconContainer *container, GdkEventButton *event) { NautilusIconContainerDetails *details; NautilusIconRubberbandInfo *band_info; uint fill_color, outline_color; char *fill_color_str; GList *p; details = container->details; band_info = &details->rubberband_info; gtk_signal_emit (GTK_OBJECT (container), signals[BAND_SELECT_STARTED]); for (p = details->icons; p != NULL; p = p->next) { NautilusIcon *icon; icon = p->data; icon->was_selected_before_rubberband = icon->is_selected; } gnome_canvas_window_to_world (GNOME_CANVAS (container), event->x, event->y, &band_info->start_x, &band_info->start_y); if (GNOME_CANVAS(container)->aa) { fill_color_str = nautilus_theme_get_theme_data ("directory", "SELECTION_BOX_COLOR_RGBA"); if (fill_color_str == NULL) { fill_color = 0x77bbdd40; } else { fill_color = strtoul (fill_color_str, NULL, 0); g_free (fill_color_str); } outline_color = fill_color | 255; band_info->selection_rectangle = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS (container)), gnome_canvas_rect_get_type (), "x1", band_info->start_x, "y1", band_info->start_y, "x2", band_info->start_x, "y2", band_info->start_y, "fill_color_rgba", fill_color, "outline_color_rgba", outline_color, "width_pixels", 1, NULL); } else { fill_color_str = nautilus_theme_get_theme_data ("directory", "SELECTION_BOX_COLOR"); if (fill_color_str == NULL) { fill_color_str = g_strdup ("rgb:7777/BBBB/DDDD"); } band_info->selection_rectangle = gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS (container)), gnome_canvas_rect_get_type (), "x1", band_info->start_x, "y1", band_info->start_y, "x2", band_info->start_x, "y2", band_info->start_y, "fill_color", fill_color_str, "fill_stipple", stipple, "outline_color", fill_color_str, "width_pixels", 1, NULL); g_free (fill_color_str); } band_info->prev_x = event->x; band_info->prev_y = event->y; band_info->active = TRUE; if (band_info->timer_id == 0) { band_info->timer_id = gtk_timeout_add (RUBBERBAND_TIMEOUT_INTERVAL, rubberband_timeout_callback, container); } gnome_canvas_item_grab (band_info->selection_rectangle, (GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK), NULL, event->time); } static void stop_rubberbanding (NautilusIconContainer *container, GdkEventButton *event) { NautilusIconRubberbandInfo *band_info; band_info = &container->details->rubberband_info; g_assert (band_info->timer_id != 0); gtk_timeout_remove (band_info->timer_id); band_info->timer_id = 0; band_info->active = FALSE; /* Destroy this canvas item; the parent will unref it. */ gnome_canvas_item_ungrab (band_info->selection_rectangle, event->time); gtk_object_destroy (GTK_OBJECT (band_info->selection_rectangle)); band_info->selection_rectangle = NULL; gtk_signal_emit (GTK_OBJECT (container), signals[BAND_SELECT_ENDED]); } /* Keyboard navigation. */ typedef gboolean (* IsBetterIconFunction) (NautilusIconContainer *container, NautilusIcon *start_icon, NautilusIcon *best_so_far, NautilusIcon *candidate, void *data); static NautilusIcon * find_best_icon (NautilusIconContainer *container, NautilusIcon *start_icon, IsBetterIconFunction function, void *data) { GList *p; NautilusIcon *best, *candidate; best = NULL; for (p = container->details->icons; p != NULL; p = p->next) { candidate = p->data; if (candidate != start_icon) { if ((* function) (container, start_icon, best, candidate, data)) { best = candidate; } } } return best; } static NautilusIcon * find_best_selected_icon (NautilusIconContainer *container, NautilusIcon *start_icon, IsBetterIconFunction function, void *data) { GList *p; NautilusIcon *best, *candidate; best = NULL; for (p = container->details->icons; p != NULL; p = p->next) { candidate = p->data; if (candidate != start_icon && candidate->is_selected) { if ((* function) (container, start_icon, best, candidate, data)) { best = candidate; } } } return best; } static int compare_icons_by_uri (NautilusIconContainer *container, NautilusIcon *icon_a, NautilusIcon *icon_b) { char *uri_a, *uri_b; int result; g_assert (NAUTILUS_IS_ICON_CONTAINER (container)); g_assert (icon_a != NULL); g_assert (icon_b != NULL); g_assert (icon_a != icon_b); uri_a = nautilus_icon_container_get_icon_uri (container, icon_a); uri_b = nautilus_icon_container_get_icon_uri (container, icon_b); result = strcmp (uri_a, uri_b); g_assert (result != 0); g_free (uri_a); g_free (uri_b); return result; } static int compare_icons_horizontal_first (NautilusIconContainer *container, NautilusIcon *icon_a, NautilusIcon *icon_b) { if (icon_a->x < icon_b->x) { return -1; } if (icon_a->x > icon_b->x) { return +1; } if (icon_a->y < icon_b->y) { return -1; } if (icon_a->y > icon_b->y) { return +1; } return compare_icons_by_uri (container, icon_a, icon_b); } static int compare_icons_vertical_first (NautilusIconContainer *container, NautilusIcon *icon_a, NautilusIcon *icon_b) { if (icon_a->y < icon_b->y) { return -1; } if (icon_a->y > icon_b->y) { return +1; } if (icon_a->x < icon_b->x) { return -1; } if (icon_a->x > icon_b->x) { return +1; } return compare_icons_by_uri (container, icon_a, icon_b); } static gboolean leftmost_in_top_row (NautilusIconContainer *container, NautilusIcon *start_icon, NautilusIcon *best_so_far, NautilusIcon *candidate, void *data) { if (best_so_far == NULL) { return TRUE; } return compare_icons_vertical_first (container, best_so_far, candidate) > 0; } static gboolean rightmost_in_bottom_row (NautilusIconContainer *container, NautilusIcon *start_icon, NautilusIcon *best_so_far, NautilusIcon *candidate, void *data) { if (best_so_far == NULL) { return TRUE; } return compare_icons_vertical_first (container, best_so_far, candidate) < 0; } static int compare_with_start_row (NautilusIconContainer *container, NautilusIcon *icon) { ArtIRect bounds; nautilus_gnome_canvas_item_get_current_canvas_bounds (GNOME_CANVAS_ITEM (icon->item), &bounds); if (container->details->arrow_key_start < bounds.y0) { return -1; } if (container->details->arrow_key_start > bounds.y1) { return +1; } return 0; } static int compare_with_start_column (NautilusIconContainer *container, NautilusIcon *icon) { ArtIRect bounds; nautilus_gnome_canvas_item_get_current_canvas_bounds (GNOME_CANVAS_ITEM (icon->item), &bounds); if (container->details->arrow_key_start < bounds.x0) { return -1; } if (container->details->arrow_key_start > bounds.x1) { return +1; } return 0; } static gboolean same_row_right_side_leftmost (NautilusIconContainer *container, NautilusIcon *start_icon, NautilusIcon *best_so_far, NautilusIcon *candidate, void *data) { /* Candidates not on the start row do not qualify. */ if (compare_with_start_row (container, candidate) != 0) { return FALSE; } /* Candidates that are farther right lose out. */ if (best_so_far != NULL) { if (compare_icons_horizontal_first (container, best_so_far, candidate) < 0) { return FALSE; } } /* Candidate to the left of the start do not qualify. */ if (compare_icons_horizontal_first (container, candidate, start_icon) <= 0) { return FALSE; } return TRUE; } static gboolean same_row_left_side_rightmost (NautilusIconContainer *container, NautilusIcon *start_icon, NautilusIcon *best_so_far, NautilusIcon *candidate, void *data) { /* Candidates not on the start row do not qualify. */ if (compare_with_start_row (container, candidate) != 0) { return FALSE; } /* Candidates that are farther left lose out. */ if (best_so_far != NULL) { if (compare_icons_horizontal_first (container, best_so_far, candidate) > 0) { return FALSE; } } /* Candidate to the right of the start do not qualify. */ if (compare_icons_horizontal_first (container, candidate, start_icon) >= 0) { return FALSE; } return TRUE; } static gboolean same_column_above_lowest (NautilusIconContainer *container, NautilusIcon *start_icon, NautilusIcon *best_so_far, NautilusIcon *candidate, void *data) { /* Candidates not on the start column do not qualify. */ if (compare_with_start_column (container, candidate) != 0) { return FALSE; } /* Candidates that are higher lose out. */ if (best_so_far != NULL) { if (compare_icons_vertical_first (container, best_so_far, candidate) > 0) { return FALSE; } } /* Candidates below the start do not qualify. */ if (compare_icons_vertical_first (container, candidate, start_icon) >= 0) { return FALSE; } return TRUE; } static gboolean same_column_below_highest (NautilusIconContainer *container, NautilusIcon *start_icon, NautilusIcon *best_so_far, NautilusIcon *candidate, void *data) { /* Candidates not on the start column do not qualify. */ if (compare_with_start_column (container, candidate) != 0) { return FALSE; } /* Candidates that are lower lose out. */ if (best_so_far != NULL) { if (compare_icons_vertical_first (container, best_so_far, candidate) < 0) { return FALSE; } } /* Candidate above the start do not qualify. */ if (compare_icons_vertical_first (container, candidate, start_icon) <= 0) { return FALSE; } return TRUE; } static void keyboard_move_to (NautilusIconContainer *container, NautilusIcon *icon, GdkEventKey *event) { if (icon == NULL) { return; } if ((event->state & GDK_CONTROL_MASK) != 0) { /* Move the keyboard focus. */ set_keyboard_focus (container, icon); } else { /* Select icons and get rid of the special keyboard focus. */ clear_keyboard_focus (container); if (select_one_unselect_others (container, icon)) { gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } } schedule_keyboard_icon_reveal (container, icon); } static void keyboard_home (NautilusIconContainer *container, GdkEventKey *event) { /* Home selects the first icon. * Control-Home sets the keyboard focus to the first icon. */ container->details->arrow_key_axis = AXIS_NONE; keyboard_move_to (container, find_best_icon (container, NULL, leftmost_in_top_row, NULL), event); } static void keyboard_end (NautilusIconContainer *container, GdkEventKey *event) { /* End selects the last icon. * Control-End sets the keyboard focus to the last icon. */ container->details->arrow_key_axis = AXIS_NONE; keyboard_move_to (container, find_best_icon (container, NULL, rightmost_in_bottom_row, NULL), event); } static void record_arrow_key_start (NautilusIconContainer *container, NautilusIcon *icon, Axis arrow_key_axis) { ArtDRect world_rect; if (container->details->arrow_key_axis == arrow_key_axis) { return; } nautilus_icon_canvas_item_get_icon_rectangle (icon->item, &world_rect); gnome_canvas_w2c (GNOME_CANVAS (container), (world_rect.x0 + world_rect.x1) / 2, (world_rect.y0 + world_rect.y1) / 2, arrow_key_axis == AXIS_VERTICAL ? &container->details->arrow_key_start : NULL, arrow_key_axis == AXIS_HORIZONTAL ? &container->details->arrow_key_start : NULL); container->details->arrow_key_axis = arrow_key_axis; } static void keyboard_arrow_key (NautilusIconContainer *container, GdkEventKey *event, Axis axis, IsBetterIconFunction better_start, IsBetterIconFunction empty_start, IsBetterIconFunction better_destination) { NautilusIcon *icon; /* Chose the icon to start with. * If we have a keyboard focus, start with it. * Otherwise, use the single selected icon. * If there's multiple selection, use the icon farthest toward the end. */ icon = container->details->keyboard_focus; if (icon == NULL) { if (has_multiple_selection (container)) { icon = find_best_selected_icon (container, NULL, better_start, NULL); } else { icon = get_first_selected_icon (container); } } /* If there's no icon, select the icon farthest toward the end. * If there is an icon, select the next icon based on the arrow direction. */ if (icon == NULL) { container->details->arrow_key_axis = AXIS_NONE; icon = find_best_icon (container, NULL, empty_start, NULL); } else { record_arrow_key_start (container, icon, axis); icon = find_best_icon (container, icon, better_destination, NULL); } keyboard_move_to (container, icon, event); } static void keyboard_right (NautilusIconContainer *container, GdkEventKey *event) { /* Right selects the next icon in the same row. * Control-Right sets the keyboard focus to the next icon in the same row. */ keyboard_arrow_key (container, event, AXIS_HORIZONTAL, rightmost_in_bottom_row, leftmost_in_top_row, same_row_right_side_leftmost); } static void keyboard_left (NautilusIconContainer *container, GdkEventKey *event) { /* Left selects the next icon in the same row. * Control-Left sets the keyboard focus to the next icon in the same row. */ keyboard_arrow_key (container, event, AXIS_HORIZONTAL, leftmost_in_top_row, rightmost_in_bottom_row, same_row_left_side_rightmost); } static void keyboard_down (NautilusIconContainer *container, GdkEventKey *event) { /* Down selects the next icon in the same column. * Control-Down sets the keyboard focus to the next icon in the same column. */ keyboard_arrow_key (container, event, AXIS_VERTICAL, rightmost_in_bottom_row, leftmost_in_top_row, same_column_below_highest); } static void keyboard_up (NautilusIconContainer *container, GdkEventKey *event) { /* Up selects the next icon in the same column. * Control-Up sets the keyboard focus to the next icon in the same column. */ keyboard_arrow_key (container, event, AXIS_VERTICAL, leftmost_in_top_row, rightmost_in_bottom_row, same_column_above_lowest); } static void keyboard_space (NautilusIconContainer *container, GdkEventKey *event) { /* Control-space toggles the selection state of the current icon. */ if (container->details->keyboard_focus != NULL && (event->state & GDK_CONTROL_MASK) != 0) { icon_toggle_selected (container, container->details->keyboard_focus); gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } } /* look for the first icon that matches the longest part of a given * search pattern */ typedef struct { char *name; int last_match_length; } BestNameMatch; static gboolean match_best_name (NautilusIconContainer *container, NautilusIcon *start_icon, NautilusIcon *best_so_far, NautilusIcon *candidate, void *data) { BestNameMatch *match_state; const char *name; int match_length; match_state = (BestNameMatch *) data; name = nautilus_icon_canvas_item_get_editable_text (candidate->item); /* This can happen if a key event is handled really early while loading * the icon container, before the items have all been updated once. */ if (name == NULL) { return FALSE; } for (match_length = 0; ; match_length++) { if (name[match_length] == '\0' || match_state->name[match_length] == '\0') { break; } /* Require the match pattern to already be lowercase. */ g_assert (tolower ((guchar) match_state->name[match_length]) == match_state->name[match_length]); if (tolower ((guchar) name[match_length]) != match_state->name[match_length]) { break; } } if (match_length > match_state->last_match_length) { /* This is the longest pattern match sofar, remember the * length and return with a candidate. */ match_state->last_match_length = match_length; return TRUE; } return FALSE; } static void select_matching_name (NautilusIconContainer *container, const char *match_name) { int index; NautilusIcon *icon; BestNameMatch match_state; match_state.name = g_strdup (match_name); match_state.last_match_length = 0; /* a little optimization for case-insensitive match - convert the * pattern to lowercase ahead of time */ for (index = 0; ; index++) { if (match_state.name[index] == '\0') break; match_state.name[index] = tolower ((guchar) match_state.name[index]); } icon = find_best_icon (container, NULL, match_best_name, &match_state); if (icon == NULL) { return; } /* Select icons and get rid of the special keyboard focus. */ clear_keyboard_focus (container); if (select_one_unselect_others (container, icon)) { gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } schedule_keyboard_icon_reveal (container, icon); g_free (match_state.name); } static int compare_icons_by_name (gconstpointer a, gconstpointer b) { const NautilusIcon *icon_a, *icon_b; icon_a = a; icon_b = b; /* _get_editable_text might return NULL here if called while the * icon container is loading, before each icon has been updated once. */ return nautilus_strcoll (nautilus_icon_canvas_item_get_editable_text (icon_a->item), nautilus_icon_canvas_item_get_editable_text (icon_b->item)); } static GList * build_sorted_icon_list (NautilusIconContainer *container) { if (container->details->icons == NULL) { return NULL; } return g_list_sort (nautilus_g_list_copy (container->details->icons), compare_icons_by_name); } static void select_previous_or_next_name (NautilusIconContainer *container, gboolean next, GdkEventKey *event) { NautilusIcon *icon; GList *list; const GList *item; item = NULL; /* Chose the icon to start with. * If we have a keyboard focus, start with it. * Otherwise, use the single selected icon. */ icon = container->details->keyboard_focus; if (icon == NULL) { icon = get_first_selected_icon (container); } list = build_sorted_icon_list (container); if (icon != NULL) { /* must have at least @icon in the list */ g_assert (list != NULL); item = g_list_find (list, icon); g_assert (item != NULL); item = next ? item->next : item->prev; } else if (list != NULL) { /* no selection yet, pick the first or last item to select */ item = next ? g_list_first (list) : g_list_last (list); } icon = (item != NULL) ? item->data : NULL; if (icon != NULL) { keyboard_move_to (container, icon, event); } g_list_free (list); } /* GtkObject methods. */ static void destroy (GtkObject *object) { NautilusIconContainer *container; guint i; container = NAUTILUS_ICON_CONTAINER (object); nautilus_icon_dnd_fini (container); nautilus_icon_container_clear (container); unschedule_keyboard_icon_reveal (container); if (container->details->rubberband_info.timer_id != 0) { gtk_timeout_remove (container->details->rubberband_info.timer_id); } if (container->details->rubberband_info.selection_rectangle != NULL) { /* Destroy this canvas item; the parent will unref it. */ gtk_object_destroy (GTK_OBJECT (container->details->rubberband_info.selection_rectangle)); } if (container->details->idle_id != 0) { gtk_idle_remove (container->details->idle_id); } for (i = 0; i < NAUTILUS_N_ELEMENTS (container->details->label_font); i++) { if (container->details->label_font[i] != NULL) gdk_font_unref (container->details->label_font[i]); } if (container->details->smooth_label_font != NULL) { gtk_object_unref (GTK_OBJECT (container->details->smooth_label_font)); } if (container->details->highlight_frame != NULL) { gdk_pixbuf_unref (container->details->highlight_frame); } nautilus_preferences_remove_callback (NAUTILUS_PREFERENCES_THEME, nautilus_icon_container_theme_changed, container); nautilus_icon_container_flush_typeselect_state (container); g_free (container->details); NAUTILUS_CALL_PARENT_CLASS (GTK_OBJECT_CLASS, destroy, (object)); } /* GtkWidget methods. */ static void size_request (GtkWidget *widget, GtkRequisition *requisition) { requisition->width = 1; requisition->height = 1; } static void size_allocate (GtkWidget *widget, GtkAllocation *allocation) { NautilusIconContainer *container; gboolean need_layout_redone; container = NAUTILUS_ICON_CONTAINER (widget); need_layout_redone = !container->details->has_been_allocated; if (allocation->x != widget->allocation.x || allocation->width != widget->allocation.width || allocation->y != widget->allocation.y || allocation->height != widget->allocation.height) { need_layout_redone = TRUE; } NAUTILUS_CALL_PARENT_CLASS (GTK_WIDGET_CLASS, size_allocate, (widget, allocation)); container->details->has_been_allocated = TRUE; if (need_layout_redone) { redo_layout (NAUTILUS_ICON_CONTAINER (widget)); } } static void realize (GtkWidget *widget) { GtkStyle *style; GtkWindow *window; NAUTILUS_CALL_PARENT_CLASS (GTK_WIDGET_CLASS, realize, (widget)); style = gtk_style_copy (gtk_widget_get_style (widget)); style->bg[GTK_STATE_NORMAL] = style->base[GTK_STATE_NORMAL]; gtk_widget_set_style (widget, style); gdk_window_set_background (GTK_LAYOUT (widget)->bin_window, &widget->style->bg[GTK_STATE_NORMAL]); /* reduce flicker when scrolling by setting the back pixmap to NULL */ gdk_window_set_back_pixmap (GTK_LAYOUT (widget)->bin_window, NULL, FALSE); /* make us the focused widget */ g_assert (GTK_IS_WINDOW (gtk_widget_get_toplevel (widget))); window = GTK_WINDOW (gtk_widget_get_toplevel (widget)); gtk_window_set_focus (window, widget); } static void unrealize (GtkWidget *widget) { GtkWindow *window; g_assert (GTK_IS_WINDOW (gtk_widget_get_toplevel (widget))); window = GTK_WINDOW (gtk_widget_get_toplevel (widget)); gtk_window_set_focus (window, NULL); NAUTILUS_CALL_PARENT_CLASS (GTK_WIDGET_CLASS, unrealize, (widget)); } static gboolean button_press_event (GtkWidget *widget, GdkEventButton *event) { NautilusIconContainer *container; gboolean selection_changed; gboolean return_value; gboolean clicked_on_icon; int click_mode; gint64 current_time; static gint64 last_click_time = 0; static gint click_count = 0; /* Determine click count */ current_time = nautilus_get_system_time (); if (current_time - last_click_time < DOUBLE_CLICK_TIME) { click_count++; } else { click_count = 0; } /* Stash time for next compare */ last_click_time = current_time; /* Ignore double click if we are in single click mode */ click_mode = nautilus_preferences_get_enum (NAUTILUS_PREFERENCES_CLICK_POLICY, NAUTILUS_CLICK_POLICY_DOUBLE); if (click_mode == NAUTILUS_CLICK_POLICY_SINGLE && click_count >= 2) { return TRUE; } container = NAUTILUS_ICON_CONTAINER (widget); container->details->button_down_time = event->time; /* Forget about the old keyboard selection now that we've started mousing. */ clear_keyboard_focus (container); /* Forget about where we began with the arrow keys now that we're mousing. */ container->details->arrow_key_axis = AXIS_NONE; /* Forget the typeahead state. */ nautilus_icon_container_flush_typeselect_state (container); /* Invoke the canvas event handler and see if an item picks up the event. */ clicked_on_icon = NAUTILUS_CALL_PARENT_CLASS (GTK_WIDGET_CLASS, button_press_event, (widget, event)); /* Move focus to icon container, unless we're still renaming (to avoid exiting * renaming mode) */ if (!GTK_WIDGET_HAS_FOCUS (widget) && !(is_renaming (container) || is_renaming_pending (container))) { gtk_widget_grab_focus (widget); } if (clicked_on_icon) { return TRUE; } /* An item didn't take the press, so it's a background press. * We ignore double clicks on the desktop for now. */ if (event->type == GDK_2BUTTON_PRESS || event->type == GDK_3BUTTON_PRESS) { return TRUE; } /* Button 1 does rubber banding. */ if (event->button == RUBBERBAND_BUTTON) { if (! button_event_modifies_selection (event)) { selection_changed = unselect_all (container); if (selection_changed) { gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } } start_rubberbanding (container, event); return TRUE; } /* Button 2 may be passed to the window manager. */ if (event->button == MIDDLE_BUTTON) { gtk_signal_emit (GTK_OBJECT (widget), signals[MIDDLE_CLICK], event); return TRUE; } /* Button 3 does a contextual menu. */ if (event->button == CONTEXTUAL_MENU_BUTTON) { end_renaming_mode (container, TRUE); gtk_signal_emit (GTK_OBJECT (widget), signals[CONTEXT_CLICK_BACKGROUND], event); return TRUE; } /* Otherwise, we emit a button_press message. */ gtk_signal_emit (GTK_OBJECT (widget), signals[BUTTON_PRESS], event, &return_value); return return_value; } static void nautilus_icon_container_did_not_drag (NautilusIconContainer *container, GdkEventButton *event) { NautilusIconContainerDetails *details; details = container->details; if (!button_event_modifies_selection (event) && !details->drag_icon->is_selected) { gboolean selection_changed; selection_changed = select_one_unselect_others (container, details->drag_icon); if (selection_changed) { gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } } if (details->drag_icon != NULL) { /* If single-click mode, activate the selected icons, unless modifying * the selection or pressing for a very long time. */ if (details->single_click_mode && event->time - details->button_down_time < MAX_CLICK_TIME && ! button_event_modifies_selection (event)) { /* It's a tricky UI issue whether this should activate * just the clicked item (as if it were a link), or all * the selected items (as if you were issuing an "activate * selection" command). For now, we're trying the activate * entire selection version to see how it feels. Note that * NautilusList goes the other way because its "links" seem * much more link-like. */ activate_selected_items (container); } } } static gboolean start_stretching (NautilusIconContainer *container) { NautilusIconContainerDetails *details; NautilusIcon *icon; ArtPoint world_point; details = container->details; icon = details->stretch_icon; /* Check if we hit the stretch handles. */ world_point.x = details->drag_x; world_point.y = details->drag_y; if (!nautilus_icon_canvas_item_hit_test_stretch_handles (icon->item, &world_point)) { return FALSE; } /* Set up the dragging. */ details->drag_state = DRAG_STATE_STRETCH; gnome_canvas_w2c (GNOME_CANVAS (container), details->drag_x, details->drag_y, &details->stretch_start.pointer_x, &details->stretch_start.pointer_y); gnome_canvas_w2c (GNOME_CANVAS (container), icon->x, icon->y, &details->stretch_start.icon_x, &details->stretch_start.icon_y); icon_get_size (container, icon, &details->stretch_start.icon_size, NULL); gnome_canvas_item_grab (GNOME_CANVAS_ITEM (icon->item), (GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK), NULL, GDK_CURRENT_TIME); return TRUE; } static void continue_stretching (NautilusIconContainer *container, int window_x, int window_y, gboolean update_position) { NautilusIconContainerDetails *details; NautilusIcon *icon; double world_x, world_y; StretchState stretch_state; details = container->details; icon = details->stretch_icon; if (icon == NULL) { return; } gnome_canvas_window_to_world (GNOME_CANVAS (container), window_x, window_y, &world_x, &world_y); gnome_canvas_w2c (GNOME_CANVAS (container), world_x, world_y, &stretch_state.pointer_x, &stretch_state.pointer_y); compute_stretch (&details->stretch_start, &stretch_state); gnome_canvas_c2w (GNOME_CANVAS (container), stretch_state.icon_x, stretch_state.icon_y, &world_x, &world_y); icon_set_position (icon, world_x, world_y); icon_set_size (container, icon, stretch_state.icon_size, update_position); } static void ungrab_stretch_icon (NautilusIconContainer *container) { gnome_canvas_item_ungrab (GNOME_CANVAS_ITEM (container->details->stretch_icon->item), GDK_CURRENT_TIME); } static void end_stretching (NautilusIconContainer *container, int window_x, int window_y) { NautilusIconPosition position; NautilusIcon *icon; continue_stretching (container, window_x, window_y, FALSE); ungrab_stretch_icon (container); /* now that we're done stretching, update the icon's position */ icon = container->details->drag_icon; position.x = icon->x; position.y = icon->y; position.scale_x = icon->scale_x; position.scale_y = icon->scale_y; gtk_signal_emit (GTK_OBJECT (container), signals[ICON_POSITION_CHANGED], icon->data, &position); /* We must do a redo_layout after indicating we are done stretching. */ container->details->drag_icon = NULL; container->details->drag_state = DRAG_STATE_INITIAL; redo_layout (container); } static void cancel_stretching (NautilusIconContainer *container) { ungrab_stretch_icon (container); container->details->drag_icon = NULL; container->details->drag_state = DRAG_STATE_INITIAL; } static void undo_stretching (NautilusIconContainer *container) { if (container->details->stretch_icon == NULL) { return; } if (container->details->drag_state == DRAG_STATE_STRETCH) { cancel_stretching (container); } nautilus_icon_canvas_item_set_show_stretch_handles (container->details->stretch_icon->item, FALSE); icon_set_size (container, container->details->stretch_icon, container->details->initial_stretch_size, FALSE); container->details->stretch_icon = NULL; redo_layout (container); } static gboolean button_release_event (GtkWidget *widget, GdkEventButton *event) { NautilusIconContainer *container; NautilusIconContainerDetails *details; container = NAUTILUS_ICON_CONTAINER (widget); details = container->details; if (event->button == RUBBERBAND_BUTTON && details->rubberband_info.active) { stop_rubberbanding (container, event); return TRUE; } if (event->button == details->drag_button) { details->drag_button = 0; switch (details->drag_state) { case DRAG_STATE_MOVE_COPY_OR_MENU: if (!details->drag_started) { /* Right click, drag did not start, * show context menu. */ details->drag_state = DRAG_STATE_INITIAL; gtk_timeout_remove (details->context_menu_timeout_id); gtk_signal_emit (GTK_OBJECT (container), signals[CONTEXT_CLICK_SELECTION], event); break; } /* fall through */ case DRAG_STATE_MOVE_OR_COPY: if (!details->drag_started) { nautilus_icon_container_did_not_drag (container, event); } else { nautilus_icon_dnd_end_drag (container); } break; case DRAG_STATE_STRETCH: end_stretching (container, event->x, event->y); break; default: break; } details->drag_icon = NULL; if (details->drag_state == DRAG_STATE_MOVE_COPY_OR_MENU) { gtk_timeout_remove (details->context_menu_timeout_id); } details->drag_state = DRAG_STATE_INITIAL; return TRUE; } return NAUTILUS_CALL_PARENT_CLASS (GTK_WIDGET_CLASS, button_release_event, (widget, event)); } static int motion_notify_event (GtkWidget *widget, GdkEventMotion *event) { NautilusIconContainer *container; NautilusIconContainerDetails *details; double world_x, world_y; container = NAUTILUS_ICON_CONTAINER (widget); details = container->details; if (details->drag_button != 0) { switch (details->drag_state) { case DRAG_STATE_MOVE_COPY_OR_MENU: if (details->drag_started) { break; } gtk_timeout_remove (details->context_menu_timeout_id); /* fall through */ case DRAG_STATE_MOVE_OR_COPY: if (details->drag_started) { break; } gnome_canvas_window_to_world (GNOME_CANVAS (container), event->x, event->y, &world_x, &world_y); if (abs (details->drag_x - world_x) >= SNAP_RESISTANCE || abs (details->drag_y - world_y) >= SNAP_RESISTANCE) { details->drag_started = TRUE; end_renaming_mode (container, TRUE); /* KLUDGE ALERT: Poke the starting values into the motion * structure so that dragging behaves as expected. */ event->x = details->drag_x; event->y = details->drag_y; nautilus_icon_dnd_begin_drag (container, details->drag_state == DRAG_STATE_MOVE_OR_COPY ? (GDK_ACTION_MOVE | GDK_ACTION_COPY | GDK_ACTION_LINK | GDK_ACTION_ASK) : GDK_ACTION_ASK, details->drag_button, event); details->drag_state = DRAG_STATE_MOVE_OR_COPY; } break; case DRAG_STATE_STRETCH: continue_stretching (container, event->x, event->y, FALSE); break; default: break; } } return NAUTILUS_CALL_PARENT_CLASS (GTK_WIDGET_CLASS, motion_notify_event, (widget, event)); } void nautilus_icon_container_flush_typeselect_state (NautilusIconContainer *container) { if (container->details->type_select_state == NULL) { return; } g_free (container->details->type_select_state->type_select_pattern); g_free (container->details->type_select_state); container->details->type_select_state = NULL; } static gboolean handle_typeahead (NautilusIconContainer *container, const char *key_string) { char *new_pattern; gint64 now; gint64 time_delta; int key_string_length; int index; g_assert (key_string != NULL); g_assert (strlen (key_string) < 5); key_string_length = strlen (key_string); if (key_string_length == 0) { /* can be an empty string if the modifier was held down, etc. */ return FALSE; } /* only handle if printable keys typed */ for (index = 0; index < key_string_length; index++) { if (!isprint ((guchar) key_string[index])) { return FALSE; } } /* lazily allocate the typeahead state */ if (container->details->type_select_state == NULL) { container->details->type_select_state = g_new0 (TypeSelectState, 1); } /* find out how long since last character was typed */ now = nautilus_get_system_time (); time_delta = now - container->details->type_select_state->last_typeselect_time; if (time_delta < 0 || time_delta > NAUTILUS_TYPESELECT_FLUSH_DELAY) { /* the typeselect state is too old, start with a fresh one */ g_free (container->details->type_select_state->type_select_pattern); container->details->type_select_state->type_select_pattern = NULL; } if (container->details->type_select_state->type_select_pattern != NULL) { new_pattern = g_strconcat (container->details->type_select_state->type_select_pattern, key_string, NULL); g_free (container->details->type_select_state->type_select_pattern); } else { new_pattern = g_strdup (key_string); } container->details->type_select_state->type_select_pattern = new_pattern; container->details->type_select_state->last_typeselect_time = now; select_matching_name (container, new_pattern); return TRUE; } static int key_press_event (GtkWidget *widget, GdkEventKey *event) { NautilusIconContainer *container; gboolean handled; gboolean flush_typeahead; container = NAUTILUS_ICON_CONTAINER (widget); handled = FALSE; flush_typeahead = TRUE; if (is_renaming (container) || is_renaming_pending (container)) { switch (event->keyval) { case GDK_Return: case GDK_KP_Enter: end_renaming_mode (container, TRUE); handled = TRUE; break; case GDK_Escape: end_renaming_mode (container, FALSE); handled = TRUE; break; default: break; } } else { switch (event->keyval) { case GDK_Home: keyboard_home (container, event); handled = TRUE; break; case GDK_End: keyboard_end (container, event); handled = TRUE; break; case GDK_Left: keyboard_left (container, event); handled = TRUE; break; case GDK_Up: keyboard_up (container, event); handled = TRUE; break; case GDK_Right: keyboard_right (container, event); handled = TRUE; break; case GDK_Down: keyboard_down (container, event); handled = TRUE; break; case GDK_space: keyboard_space (container, event); handled = TRUE; break; case GDK_Tab: case GDK_ISO_Left_Tab: select_previous_or_next_name (container, (event->state & GDK_SHIFT_MASK) == 0, event); handled = TRUE; break; case GDK_Return: case GDK_KP_Enter: activate_selected_items (container); handled = TRUE; break; case GDK_Escape: undo_stretching (container); handled = TRUE; break; default: /* Don't use Control or Alt keys for type-selecting, because they * might be used for menus. */ handled = (event->state & (GDK_CONTROL_MASK | GDK_MOD1_MASK)) == 0 && handle_typeahead (container, event->string); flush_typeahead = !handled; break; } } if (flush_typeahead) { /* any non-ascii key will force the typeahead state to be forgotten */ nautilus_icon_container_flush_typeselect_state (container); } if (!handled) { handled = NAUTILUS_CALL_PARENT_CLASS (GTK_WIDGET_CLASS, key_press_event, (widget, event)); } return handled; } /* Initialization. */ static void nautilus_icon_container_initialize_class (NautilusIconContainerClass *class) { GtkObjectClass *object_class; GtkWidgetClass *widget_class; /* NautilusIconContainer class. */ class->button_press = NULL; /* GtkObject class. */ object_class = GTK_OBJECT_CLASS (class); object_class->destroy = destroy; /* Signals. */ signals[SELECTION_CHANGED] = gtk_signal_new ("selection_changed", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, selection_changed), gtk_marshal_NONE__NONE, GTK_TYPE_NONE, 0); signals[BUTTON_PRESS] = gtk_signal_new ("button_press", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, button_press), gtk_marshal_BOOL__POINTER, GTK_TYPE_BOOL, 1, GTK_TYPE_GDK_EVENT); signals[ACTIVATE] = gtk_signal_new ("activate", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, activate), gtk_marshal_NONE__POINTER, GTK_TYPE_NONE, 1, GTK_TYPE_POINTER); signals[CONTEXT_CLICK_SELECTION] = gtk_signal_new ("context_click_selection", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, context_click_selection), gtk_marshal_NONE__POINTER, GTK_TYPE_NONE, 1, GTK_TYPE_POINTER); signals[CONTEXT_CLICK_BACKGROUND] = gtk_signal_new ("context_click_background", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, context_click_background), gtk_marshal_NONE__POINTER, GTK_TYPE_NONE, 1, GTK_TYPE_POINTER); signals[MIDDLE_CLICK] = gtk_signal_new ("middle_click", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, middle_click), gtk_marshal_NONE__POINTER, GTK_TYPE_NONE, 1, GTK_TYPE_POINTER); signals[ICON_POSITION_CHANGED] = gtk_signal_new ("icon_position_changed", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, icon_position_changed), gtk_marshal_NONE__POINTER_POINTER, GTK_TYPE_NONE, 2, GTK_TYPE_POINTER, GTK_TYPE_POINTER); signals[ICON_TEXT_CHANGED] = gtk_signal_new ("icon_text_changed", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, icon_text_changed), gtk_marshal_NONE__POINTER_POINTER, GTK_TYPE_NONE, 2, GTK_TYPE_POINTER, GTK_TYPE_STRING); signals[RENAMING_ICON] = gtk_signal_new ("renaming_icon", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, renaming_icon), gtk_marshal_NONE__POINTER, GTK_TYPE_NONE, 1, GTK_TYPE_POINTER); signals[GET_ICON_IMAGES] = gtk_signal_new ("get_icon_images", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, get_icon_images), nautilus_gtk_marshal_POINTER__POINTER_STRING_POINTER, GTK_TYPE_POINTER, 3, GTK_TYPE_POINTER, GTK_TYPE_STRING, GTK_TYPE_POINTER); signals[GET_ICON_TEXT] = gtk_signal_new ("get_icon_text", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, get_icon_text), nautilus_gtk_marshal_NONE__POINTER_STRING_STRING, GTK_TYPE_NONE, 3, GTK_TYPE_POINTER, GTK_TYPE_STRING, GTK_TYPE_STRING); signals[GET_ICON_URI] = gtk_signal_new ("get_icon_uri", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, get_icon_uri), nautilus_gtk_marshal_STRING__POINTER, GTK_TYPE_STRING, 1, GTK_TYPE_POINTER); signals[GET_ICON_DROP_TARGET_URI] = gtk_signal_new ("get_icon_drop_target_uri", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, get_icon_drop_target_uri), nautilus_gtk_marshal_STRING__POINTER, GTK_TYPE_STRING, 1, GTK_TYPE_POINTER); signals[COMPARE_ICONS] = gtk_signal_new ("compare_icons", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, compare_icons), nautilus_gtk_marshal_INT__POINTER_POINTER, GTK_TYPE_INT, 2, GTK_TYPE_POINTER, GTK_TYPE_POINTER); signals[MOVE_COPY_ITEMS] = gtk_signal_new ("move_copy_items", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, move_copy_items), nautilus_gtk_marshal_NONE__POINTER_POINTER_POINTER_INT_INT_INT, GTK_TYPE_NONE, 6, GTK_TYPE_POINTER, GTK_TYPE_POINTER, GTK_TYPE_POINTER, GTK_TYPE_INT, GTK_TYPE_INT, GTK_TYPE_INT); signals[CREATE_NAUTILUS_LINKS] = gtk_signal_new ("create_nautilus_links", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, create_nautilus_links), gtk_marshal_NONE__POINTER_INT_INT, GTK_TYPE_NONE, 3, GTK_TYPE_POINTER, GTK_TYPE_INT, GTK_TYPE_INT); signals[GET_CONTAINER_URI] = gtk_signal_new ("get_container_uri", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, get_container_uri), nautilus_gtk_marshal_STRING__NONE, GTK_TYPE_STRING, 0); signals[CAN_ACCEPT_ITEM] = gtk_signal_new ("can_accept_item", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, can_accept_item), nautilus_gtk_marshal_INT__POINTER_STRING, GTK_TYPE_INT, 2, GTK_TYPE_POINTER, GTK_TYPE_STRING); signals[GET_STORED_ICON_POSITION] = gtk_signal_new ("get_stored_icon_position", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, get_stored_icon_position), nautilus_gtk_marshal_BOOL__POINTER_POINTER, GTK_TYPE_BOOL, 2, GTK_TYPE_POINTER, GTK_TYPE_POINTER); signals[LAYOUT_CHANGED] = gtk_signal_new ("layout_changed", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, layout_changed), gtk_marshal_NONE__NONE, GTK_TYPE_NONE, 0); signals[PREVIEW] = gtk_signal_new ("preview", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, preview), nautilus_gtk_marshal_INT__POINTER_INT, GTK_TYPE_INT, 2, GTK_TYPE_POINTER, GTK_TYPE_BOOL); signals[BAND_SELECT_STARTED] = gtk_signal_new ("band_select_started", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, band_select_started), gtk_marshal_NONE__NONE, GTK_TYPE_NONE, 0); signals[BAND_SELECT_ENDED] = gtk_signal_new ("band_select_ended", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconContainerClass, band_select_ended), gtk_marshal_NONE__NONE, GTK_TYPE_NONE, 0); gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL); /* GtkWidget class. */ widget_class = GTK_WIDGET_CLASS (class); widget_class->size_request = size_request; widget_class->size_allocate = size_allocate; widget_class->realize = realize; widget_class->unrealize = unrealize; widget_class->button_press_event = button_press_event; widget_class->button_release_event = button_release_event; widget_class->motion_notify_event = motion_notify_event; widget_class->key_press_event = key_press_event; /* Initialize the stipple bitmap. */ stipple = gdk_bitmap_create_from_data (NULL, stipple_bits, 2, 2); } static void handle_focus_out_event (GtkWidget *widget, GdkEventFocus *event, gpointer user_data) { /* End renaming and commit change. */ end_renaming_mode (NAUTILUS_ICON_CONTAINER (widget), TRUE); } static void nautilus_icon_container_initialize (NautilusIconContainer *container) { NautilusIconContainerDetails *details; NautilusBackground *background; details = g_new0 (NautilusIconContainerDetails, 1); details->zoom_level = NAUTILUS_ZOOM_LEVEL_STANDARD; /* font table - this isn't exactly proportional, but it looks better than computed */ /* FIXME bugzilla.eazel.com 5093: Font name is hard-coded here. */ /* FIXME bugzilla.eazel.com 5101: Font size is hard-coded here. */ details->label_font[NAUTILUS_ZOOM_LEVEL_SMALLEST] = nautilus_font_factory_get_font_by_family ("helvetica", 8); details->label_font[NAUTILUS_ZOOM_LEVEL_SMALLER] = nautilus_font_factory_get_font_by_family ("helvetica", 8); details->label_font[NAUTILUS_ZOOM_LEVEL_SMALL] = nautilus_font_factory_get_font_by_family ("helvetica", 10); details->label_font[NAUTILUS_ZOOM_LEVEL_STANDARD] = nautilus_font_factory_get_font_by_family ("helvetica", 12); details->label_font[NAUTILUS_ZOOM_LEVEL_LARGE] = nautilus_font_factory_get_font_by_family ("helvetica", 14); details->label_font[NAUTILUS_ZOOM_LEVEL_LARGER] = nautilus_font_factory_get_font_by_family ("helvetica", 18); details->label_font[NAUTILUS_ZOOM_LEVEL_LARGEST] = nautilus_font_factory_get_font_by_family ("helvetica", 18); details->smooth_label_font = nautilus_scalable_font_get_default_font (); /* FIXME bugzilla.eazel.com 5101: Font size is hard-coded here. */ details->smooth_font_size[NAUTILUS_ZOOM_LEVEL_SMALLEST] = 8; details->smooth_font_size[NAUTILUS_ZOOM_LEVEL_SMALLER] = 8; details->smooth_font_size[NAUTILUS_ZOOM_LEVEL_SMALL] = 10; details->smooth_font_size[NAUTILUS_ZOOM_LEVEL_STANDARD] = 12; details->smooth_font_size[NAUTILUS_ZOOM_LEVEL_LARGE] = 14; details->smooth_font_size[NAUTILUS_ZOOM_LEVEL_LARGER] = 18; details->smooth_font_size[NAUTILUS_ZOOM_LEVEL_LARGEST] = 18; container->details = details; /* Set up DnD. */ nautilus_icon_dnd_init (container, stipple); /* Make sure that we find out if the theme changes. */ gtk_signal_connect_object_while_alive (nautilus_icon_factory_get (), "icons_changed", nautilus_icon_container_request_update_all, GTK_OBJECT (container)); /* when the background changes, we must set up the label text color */ background = nautilus_get_widget_background (GTK_WIDGET (container)); gtk_signal_connect (GTK_OBJECT(background), "appearance_changed", update_label_color, GTK_OBJECT (container)); gtk_signal_connect (GTK_OBJECT (container), "focus-out-event", handle_focus_out_event, NULL); /* read in theme-dependent data */ nautilus_icon_container_theme_changed (container); nautilus_preferences_add_callback (NAUTILUS_PREFERENCES_THEME, nautilus_icon_container_theme_changed, container); } typedef struct { NautilusIconContainer *container; GdkEventButton *event; } ContextMenuParameters; static ContextMenuParameters * context_menu_parameters_new (NautilusIconContainer *container, GdkEventButton *event) { ContextMenuParameters *parameters; parameters = g_new (ContextMenuParameters, 1); parameters->container = container; parameters->event = (GdkEventButton *)(gdk_event_copy ((GdkEvent *)event)); return parameters; } static void context_menu_parameters_free (ContextMenuParameters *parameters) { gdk_event_free ((GdkEvent *)parameters->event); g_free (parameters); } static gboolean show_context_menu_callback (void *cast_to_parameters) { ContextMenuParameters *parameters; parameters = (ContextMenuParameters *)cast_to_parameters; g_assert (NAUTILUS_IS_ICON_CONTAINER (parameters->container)); if (parameters->container->details->drag_state == DRAG_STATE_MOVE_COPY_OR_MENU) { parameters->container->details->drag_state = DRAG_STATE_INITIAL; gtk_timeout_remove (parameters->container->details->context_menu_timeout_id); /* Context menu applies to all selected items. The only * odd case is if this click deselected the icon under * the mouse, but at least the behavior is consistent. */ gtk_signal_emit (GTK_OBJECT (parameters->container), signals[CONTEXT_CLICK_SELECTION], parameters->event); } context_menu_parameters_free (parameters); return TRUE; } /* NautilusIcon event handling. */ /* Conceptually, pressing button 1 together with CTRL or SHIFT toggles * selection of a single icon without affecting the other icons; * without CTRL or SHIFT, it selects a single icon and un-selects all * the other icons. But in this latter case, the de-selection should * only happen when the button is released if the icon is already * selected, because the user might select multiple icons and drag all * of them by doing a simple click-drag. */ static gboolean handle_icon_button_press (NautilusIconContainer *container, NautilusIcon *icon, GdkEventButton *event) { NautilusIconContainerDetails *details; if (event->button != DRAG_BUTTON && event->button != CONTEXTUAL_MENU_BUTTON) { return TRUE; } details = container->details; if (event->button == DRAG_BUTTON || event->button == CONTEXTUAL_MENU_BUTTON) { details->drag_button = event->button; details->drag_icon = icon; details->drag_x = event->x; details->drag_y = event->y; details->drag_state = event->button == DRAG_BUTTON ? DRAG_STATE_MOVE_OR_COPY : DRAG_STATE_MOVE_COPY_OR_MENU; details->drag_started = FALSE; /* Check to see if this is a click on the stretch handles. * If so, it won't modify the selection. */ if (icon == container->details->stretch_icon) { if (start_stretching (container)) { return TRUE; } } if (event->button == CONTEXTUAL_MENU_BUTTON) { /* after a timeout we will decide if this is a * context menu click or a drag start */ details->context_menu_timeout_id = gtk_timeout_add ( CONTEXT_MENU_TIMEOUT_INTERVAL, show_context_menu_callback, context_menu_parameters_new (container, event)); } } /* Modify the selection as appropriate. Selection is modified * the same way for contextual menu as it would be without. */ if (button_event_modifies_selection (event)) { icon_toggle_selected (container, icon); gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } else if (!icon->is_selected) { unselect_all (container); icon_set_selected (container, icon, TRUE); gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } if (event->type == GDK_2BUTTON_PRESS) { /* Double clicking does not trigger a D&D action. */ details->drag_button = 0; details->drag_icon = NULL; activate_selected_items (container); } return TRUE; } static int item_event_callback (GnomeCanvasItem *item, GdkEvent *event, gpointer data) { NautilusIconContainer *container; NautilusIconContainerDetails *details; NautilusIcon *icon; container = NAUTILUS_ICON_CONTAINER (data); details = container->details; icon = NAUTILUS_ICON_CANVAS_ITEM (item)->user_data; g_return_val_if_fail (icon != NULL, FALSE); switch (event->type) { case GDK_BUTTON_PRESS: case GDK_2BUTTON_PRESS: if (handle_icon_button_press (container, icon, &event->button)) { /* Stop the event from being passed along further. Returning * TRUE ain't enough. */ gtk_signal_emit_stop_by_name (GTK_OBJECT (item), "event"); return TRUE; } return FALSE; default: return FALSE; } } GtkWidget * nautilus_icon_container_new (void) { GtkWidget *container; gtk_widget_push_visual (gdk_rgb_get_visual ()); gtk_widget_push_colormap (gdk_rgb_get_cmap ()); container = gtk_widget_new (nautilus_icon_container_get_type (), NULL); gtk_widget_pop_visual (); gtk_widget_pop_colormap (); return container; } /* Clear all of the icons in the container. */ void nautilus_icon_container_clear (NautilusIconContainer *container) { NautilusIconContainerDetails *details; GList *p; g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); details = container->details; end_renaming_mode (container, TRUE); clear_keyboard_focus (container); details->stretch_icon = NULL; for (p = details->icons; p != NULL; p = p->next) { icon_free (p->data); } g_list_free (details->icons); details->icons = NULL; g_list_free (details->new_icons); details->new_icons = NULL; nautilus_icon_container_update_scroll_region (container); } gboolean nautilus_icon_container_is_empty (NautilusIconContainer *container) { return container->details->icons == NULL; } /* Call a function for all the icons. */ typedef struct { NautilusIconCallback callback; gpointer callback_data; } CallbackAndData; static void call_icon_callback (gpointer data, gpointer callback_data) { NautilusIcon *icon; CallbackAndData *callback_and_data; icon = data; callback_and_data = callback_data; (* callback_and_data->callback) (icon->data, callback_and_data->callback_data); } void nautilus_icon_container_for_each (NautilusIconContainer *container, NautilusIconCallback callback, gpointer callback_data) { CallbackAndData callback_and_data; g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); callback_and_data.callback = callback; callback_and_data.callback_data = callback_data; g_list_foreach (container->details->icons, call_icon_callback, &callback_and_data); } /* utility routine to remove a single icon from the container */ static void icon_destroy (NautilusIconContainer *container, NautilusIcon *icon) { NautilusIconContainerDetails *details; gboolean was_selected; details = container->details; details->icons = g_list_remove (details->icons, icon); details->new_icons = g_list_remove (details->new_icons, icon); was_selected = icon->is_selected; if (details->keyboard_focus == icon) { clear_keyboard_focus (container); } if (details->keyboard_icon_to_reveal == icon) { unschedule_keyboard_icon_reveal (container); } if (details->drop_target == icon) { details->drop_target = NULL; } icon_free (icon); if (was_selected) { gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } } /* activate any selected items in the container */ static void activate_selected_items (NautilusIconContainer *container) { GList *selection; g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); selection = nautilus_icon_container_get_selection (container); if (selection != NULL) { gtk_signal_emit (GTK_OBJECT (container), signals[ACTIVATE], selection); } g_list_free (selection); } static NautilusIcon * get_icon_being_renamed (NautilusIconContainer *container) { NautilusIcon *rename_icon; if (!is_renaming (container)) { return NULL; } g_assert (!has_multiple_selection (container)); rename_icon = get_first_selected_icon (container); g_assert (rename_icon != NULL); return rename_icon; } void nautilus_icon_container_update_icon (NautilusIconContainer *container, NautilusIcon *icon) { NautilusIconContainerDetails *details; guint icon_size_x, icon_size_y; guint min_image_size, max_image_size, max_emblem_size; guint width, height, scaled_width, scaled_height; double scale_factor; NautilusScalableIcon *scalable_icon; NautilusEmblemAttachPoints attach_points; GdkPixbuf *pixbuf, *emblem_pixbuf, *saved_pixbuf; GList *emblem_scalable_icons, *emblem_pixbufs, *p; char *editable_text, *additional_text; GdkFont *font; guint smooth_font_size; if (icon == NULL) { return; } details = container->details; /* Get the icons. */ gtk_signal_emit (GTK_OBJECT (container), signals[GET_ICON_IMAGES], icon->data, (icon == details->drop_target) ? "accept" : "", &emblem_scalable_icons, &scalable_icon); /* compute the maximum size based on the scale factor */ min_image_size = MINIMUM_IMAGE_SIZE * GNOME_CANVAS (container)->pixels_per_unit; max_image_size = MAXIMUM_IMAGE_SIZE * GNOME_CANVAS (container)->pixels_per_unit; max_emblem_size = MAXIMUM_EMBLEM_SIZE * GNOME_CANVAS (container)->pixels_per_unit; /* Get the appropriate images for the file. */ icon_get_size (container, icon, &icon_size_x, &icon_size_y); pixbuf = nautilus_icon_factory_get_pixbuf_for_icon (scalable_icon, icon_size_x, icon_size_y, max_image_size * icon->scale_x, max_image_size * icon->scale_y, &attach_points, TRUE); nautilus_scalable_icon_unref (scalable_icon); /* in the rare case an image is too small, scale it up */ width = gdk_pixbuf_get_width (pixbuf); height = gdk_pixbuf_get_height (pixbuf); if (width < min_image_size || height < min_image_size) { scale_factor = MAX (min_image_size / (double) width, min_image_size / (double) height); scaled_width = floor (width * scale_factor + .5); scaled_height = floor (height * scale_factor + .5); saved_pixbuf = pixbuf; pixbuf = gdk_pixbuf_scale_simple (pixbuf, scaled_width, scaled_height, GDK_INTERP_BILINEAR); gdk_pixbuf_unref (saved_pixbuf); } emblem_pixbufs = NULL; /* Since the natural emblem sizes are too large, scale them * down some. Perhaps the scale amount should be user * settable. */ icon_size_x = MAX (nautilus_get_icon_size_for_zoom_level (container->details->zoom_level) * icon->scale_x * EMBLEM_SCALE_FACTOR, NAUTILUS_ICON_SIZE_SMALLEST); icon_size_y = MAX (nautilus_get_icon_size_for_zoom_level (container->details->zoom_level) * icon->scale_y * EMBLEM_SCALE_FACTOR, NAUTILUS_ICON_SIZE_SMALLEST); for (p = emblem_scalable_icons; p != NULL; p = p->next) { emblem_pixbuf = nautilus_icon_factory_get_pixbuf_for_icon (p->data, icon_size_x, icon_size_y, max_emblem_size * icon->scale_y * EMBLEM_SCALE_FACTOR, max_emblem_size * icon->scale_y * EMBLEM_SCALE_FACTOR, NULL, FALSE); if (emblem_pixbuf != NULL) { emblem_pixbufs = g_list_prepend (emblem_pixbufs, emblem_pixbuf); } } emblem_pixbufs = g_list_reverse (emblem_pixbufs); nautilus_scalable_icon_list_free (emblem_scalable_icons); /* Get both editable and non-editable icon text */ gtk_signal_emit (GTK_OBJECT (container), signals[GET_ICON_TEXT], icon->data, &editable_text, &additional_text); /* If name of icon being renamed was changed from elsewhere, end renaming mode. * Alternatively, we could replace the characters in the editable text widget * with the new name, but that could cause timing problems if the user just * happened to be typing at that moment. */ if (icon == get_icon_being_renamed (container) && nautilus_strcmp (editable_text, nautilus_icon_canvas_item_get_editable_text (icon->item)) != 0) { end_renaming_mode (container, FALSE); } font = details->label_font[details->zoom_level]; smooth_font_size = details->smooth_font_size[details->zoom_level]; gnome_canvas_item_set (GNOME_CANVAS_ITEM (icon->item), "editable_text", editable_text, "additional_text", additional_text, "font", font, "highlighted_for_drop", icon == details->drop_target, "smooth_font_size", smooth_font_size, "smooth_font", details->smooth_label_font, NULL); nautilus_icon_canvas_item_set_image (icon->item, pixbuf); nautilus_icon_canvas_item_set_attach_points (icon->item, &attach_points); nautilus_icon_canvas_item_set_emblems (icon->item, emblem_pixbufs); /* Let the pixbufs go. */ gdk_pixbuf_unref (pixbuf); nautilus_gdk_pixbuf_list_free (emblem_pixbufs); g_free (editable_text); g_free (additional_text); } static gboolean assign_icon_position (NautilusIconContainer *container, NautilusIcon *icon) { gboolean have_stored_position; NautilusIconPosition position; /* Get the stored position. */ have_stored_position = FALSE; position.scale_x = 1.0; position.scale_y = 1.0; gtk_signal_emit (GTK_OBJECT (container), signals[GET_STORED_ICON_POSITION], icon->data, &position, &have_stored_position); icon->scale_x = position.scale_x; icon->scale_y = position.scale_y; if (!container->details->auto_layout) { if (have_stored_position) { icon_set_position (icon, position.x, position.y); } else { return FALSE; } } return TRUE; } static void finish_adding_icon (NautilusIconContainer *container, NautilusIcon *icon) { nautilus_icon_container_update_icon (container, icon); gnome_canvas_item_show (GNOME_CANVAS_ITEM (icon->item)); gtk_signal_connect (GTK_OBJECT (icon->item), "event", GTK_SIGNAL_FUNC (item_event_callback), container); } static void finish_adding_new_icons (NautilusIconContainer *container) { GList *p, *new_icons, *no_position_icons; NautilusIcon *icon; double bottom; new_icons = container->details->new_icons; container->details->new_icons = NULL; /* Position most icons (not unpositioned manual-layout icons). */ new_icons = g_list_reverse (new_icons); no_position_icons = NULL; for (p = new_icons; p != NULL; p = p->next) { icon = p->data; if (!assign_icon_position (container, icon)) { no_position_icons = g_list_prepend (no_position_icons, icon); } finish_adding_icon (container, icon); } g_list_free (new_icons); /* Position the unpositioned manual layout icons. */ if (no_position_icons != NULL) { g_assert (!container->details->auto_layout); sort_icons (container, &no_position_icons); get_all_icon_bounds (container, NULL, NULL, NULL, &bottom); lay_down_icons (container, no_position_icons, bottom + ICON_PAD_BOTTOM); g_list_free (no_position_icons); } } /** * nautilus_icon_container_add: * @container: A NautilusIconContainer * @data: Icon data. * * Add icon to represent @data to container. * Returns FALSE if there was already such an icon. **/ gboolean nautilus_icon_container_add (NautilusIconContainer *container, NautilusIconData *data) { NautilusIconContainerDetails *details; GList *p; NautilusIcon *icon; g_return_val_if_fail (NAUTILUS_IS_ICON_CONTAINER (container), FALSE); g_return_val_if_fail (data != NULL, FALSE); details = container->details; /* FIXME bugzilla.eazel.com 1288: * I guess we need to use an indexed data structure to avoid this loop. */ for (p = details->icons; p != NULL; p = p->next) { icon = p->data; if (icon->data == data) { return FALSE; } } /* Create the new icon, including the canvas item. */ icon = g_new0 (NautilusIcon, 1); icon->data = data; icon->x = ICON_UNPOSITIONED_VALUE; icon->y = ICON_UNPOSITIONED_VALUE; icon->scale_x = 1.0; icon->scale_y = 1.0; icon->item = NAUTILUS_ICON_CANVAS_ITEM (gnome_canvas_item_new (GNOME_CANVAS_GROUP (GNOME_CANVAS (container)->root), nautilus_icon_canvas_item_get_type (), NULL)); gnome_canvas_item_hide (GNOME_CANVAS_ITEM (icon->item)); icon->item->user_data = icon; /* Put it on both lists. */ details->icons = g_list_prepend (details->icons, icon); details->new_icons = g_list_prepend (details->new_icons, icon); /* Run an idle function to add the icons. */ schedule_redo_layout (container); return TRUE; } /** * nautilus_icon_container_remove: * @container: A NautilusIconContainer. * @data: Icon data. * * Remove the icon with this data. **/ gboolean nautilus_icon_container_remove (NautilusIconContainer *container, NautilusIconData *data) { NautilusIcon *icon; GList *p; g_return_val_if_fail (NAUTILUS_IS_ICON_CONTAINER (container), FALSE); g_return_val_if_fail (data != NULL, FALSE); end_renaming_mode (container, FALSE); /* FIXME bugzilla.eazel.com 1288: * I guess we need to use an indexed data structure to avoid this loop. */ for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; if (icon->data == data) { icon_destroy (container, icon); schedule_redo_layout (container); return TRUE; } } return FALSE; } /** * nautilus_icon_container_request_update: * @container: A NautilusIconContainer. * @data: Icon data. * * Update the icon with this data. **/ void nautilus_icon_container_request_update (NautilusIconContainer *container, NautilusIconData *data) { NautilusIcon *icon; GList *p; g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); g_return_if_fail (data != NULL); for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; if (icon->data == data) { nautilus_icon_container_update_icon (container, icon); schedule_redo_layout (container); return; } } } /* zooming */ NautilusZoomLevel nautilus_icon_container_get_zoom_level (NautilusIconContainer *container) { return container->details->zoom_level; } void nautilus_icon_container_set_zoom_level (NautilusIconContainer *container, int new_level) { NautilusIconContainerDetails *details; int pinned_level; double pixels_per_unit; details = container->details; end_renaming_mode (container, TRUE); pinned_level = new_level; if (pinned_level < NAUTILUS_ZOOM_LEVEL_SMALLEST) { pinned_level = NAUTILUS_ZOOM_LEVEL_SMALLEST; } else if (pinned_level > NAUTILUS_ZOOM_LEVEL_LARGEST) { pinned_level = NAUTILUS_ZOOM_LEVEL_LARGEST; } if (pinned_level == details->zoom_level) { return; } details->zoom_level = pinned_level; pixels_per_unit = (double) nautilus_get_icon_size_for_zoom_level (pinned_level) / NAUTILUS_ICON_SIZE_STANDARD; gnome_canvas_set_pixels_per_unit (GNOME_CANVAS (container), pixels_per_unit); nautilus_icon_container_request_update_all (container); } /** * nautilus_icon_container_request_update_all: * For each icon, synchronizes the displayed information (image, text) with the * information from the model. * * @container: An icon container. **/ void nautilus_icon_container_request_update_all (NautilusIconContainer *container) { GList *p; g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); for (p = container->details->icons; p != NULL; p = p->next) { nautilus_icon_container_update_icon (container, p->data); } redo_layout (container); } /** * nautilus_icon_container_reveal: * Change scroll position as necessary to reveal the specified item. */ void nautilus_icon_container_reveal (NautilusIconContainer *container, NautilusIconData *data) { GList *p; NautilusIcon *icon; g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); g_return_if_fail (data != NULL); /* FIXME bugzilla.eazel.com 1288: * I guess we need to use an indexed data structure to avoid this loop. */ for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; if (icon->data == data) { reveal_icon (container, icon); } } } /** * nautilus_icon_container_get_anti_aliased_mode: * get the state of the anti_aliased boolean * **/ gboolean nautilus_icon_container_get_anti_aliased_mode (NautilusIconContainer *container) { GnomeCanvas *canvas; canvas = GNOME_CANVAS (container); return canvas->aa; } /** * nautilus_icon_container_set_anti_aliased_mode: * Change the anti-aliased mode and redraw everything * **/ void nautilus_icon_container_set_anti_aliased_mode (NautilusIconContainer *container, gboolean anti_aliased_mode) { GnomeCanvas *canvas; canvas = GNOME_CANVAS (container); if (canvas->aa != anti_aliased_mode) { canvas->aa = anti_aliased_mode; nautilus_icon_container_request_update_all (container); } } /** * nautilus_icon_container_get_selection: * @container: An icon container. * * Get a list of the icons currently selected in @container. * * Return value: A GList of the programmer-specified data associated to each * selected icon, or NULL if no icon is selected. The caller is expected to * free the list when it is not needed anymore. **/ GList * nautilus_icon_container_get_selection (NautilusIconContainer *container) { GList *list, *p; g_return_val_if_fail (NAUTILUS_IS_ICON_CONTAINER (container), FALSE); list = NULL; for (p = container->details->icons; p != NULL; p = p->next) { NautilusIcon *icon; icon = p->data; if (icon->is_selected) { list = g_list_prepend (list, icon->data); } } return list; } /* Returns an array of GdkPoints of locations of the icons. */ static GArray * nautilus_icon_container_get_icon_locations (NautilusIconContainer *container, GList *icons) { GArray *result; GList *node; int index; result = g_array_new (FALSE, TRUE, sizeof (GdkPoint)); result = g_array_set_size (result, g_list_length (icons)); for (index = 0, node = icons; node != NULL; index++, node = node->next) { g_array_index (result, GdkPoint, index).x = ((NautilusIcon *)node->data)->x; g_array_index (result, GdkPoint, index).y = ((NautilusIcon *)node->data)->y; } return result; } /** * nautilus_icon_container_get_selected_icon_locations: * @container: An icon container widget. * * Returns an array of GdkPoints of locations of the selected icons. **/ GArray * nautilus_icon_container_get_selected_icon_locations (NautilusIconContainer *container) { GArray *result; GList *icons, *node; g_return_val_if_fail (NAUTILUS_IS_ICON_CONTAINER (container), NULL); icons = NULL; for (node = container->details->icons; node != NULL; node = node->next) { NautilusIcon *icon; icon = node->data; if (icon->is_selected) { icons = g_list_prepend (icons, icon); } } result = nautilus_icon_container_get_icon_locations (container, icons); g_list_free (icons); return result; } /** * nautilus_icon_container_select_all: * @container: An icon container widget. * * Select all the icons in @container at once. **/ void nautilus_icon_container_select_all (NautilusIconContainer *container) { gboolean selection_changed; GList *p; NautilusIcon *icon; g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); selection_changed = FALSE; for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; selection_changed |= icon_set_selected (container, icon, TRUE); } if (selection_changed) { gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } } /** * nautilus_icon_container_set_selection: * @container: An icon container widget. * @selection: A list of NautilusIconData *. * * Set the selection to exactly the icons in @container which have * programmer data matching one of the items in @selection. **/ void nautilus_icon_container_set_selection (NautilusIconContainer *container, GList *selection) { gboolean selection_changed; GHashTable *hash; GList *p; NautilusIcon *icon; g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); selection_changed = FALSE; hash = g_hash_table_new (g_direct_hash, g_direct_equal); for (p = selection; p != NULL; p = p->next) { g_hash_table_insert (hash, p->data, p->data); } for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; selection_changed |= icon_set_selected (container, icon, g_hash_table_lookup (hash, icon->data) != NULL); } g_hash_table_destroy (hash); if (selection_changed) { gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } } /** * nautilus_icon_container_select_list_unselect_others. * @container: An icon container widget. * @selection: A list of NautilusIcon *. * * Set the selection to exactly the icons in @selection. **/ void nautilus_icon_container_select_list_unselect_others (NautilusIconContainer *container, GList *selection) { gboolean selection_changed; GHashTable *hash; GList *p; NautilusIcon *icon; g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); selection_changed = FALSE; hash = g_hash_table_new (g_direct_hash, g_direct_equal); for (p = selection; p != NULL; p = p->next) { g_hash_table_insert (hash, p->data, p->data); } for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; selection_changed |= icon_set_selected (container, icon, g_hash_table_lookup (hash, icon) != NULL); } g_hash_table_destroy (hash); if (selection_changed) { gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } } /** * nautilus_icon_container_unselect_all: * @container: An icon container widget. * * Deselect all the icons in @container. **/ void nautilus_icon_container_unselect_all (NautilusIconContainer *container) { if (unselect_all (container)) { gtk_signal_emit (GTK_OBJECT (container), signals[SELECTION_CHANGED]); } } /** * nautilus_icon_container_get_icon_by_uri: * @container: An icon container widget. * @uri: The uri of an icon to find. * * Locate an icon, given the URI. The URI must match exactly. * Later we may have to have some way of figuring out if the * URI specifies the same object that does not require an exact match. **/ NautilusIcon * nautilus_icon_container_get_icon_by_uri (NautilusIconContainer *container, const char *uri) { NautilusIconContainerDetails *details; GList *p; /* Eventually, we must avoid searching the entire icon list, but it's OK for now. A hash table mapping uri to icon is one possibility. */ details = container->details; for (p = details->icons; p != NULL; p = p->next) { NautilusIcon *icon; char *icon_uri; gboolean is_match; icon = p->data; icon_uri = nautilus_icon_container_get_icon_uri (container, icon); is_match = strcmp (uri, icon_uri) == 0; g_free (icon_uri); if (is_match) { return icon; } } return NULL; } static NautilusIcon * get_nth_selected_icon (NautilusIconContainer *container, int index) { GList *p; NautilusIcon *icon; int selection_count; g_return_val_if_fail (index > 0, NULL); /* Find the nth selected icon. */ selection_count = 0; for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; if (icon->is_selected) { if (++selection_count == index) { return icon; } } } return NULL; } static NautilusIcon * get_first_selected_icon (NautilusIconContainer *container) { return get_nth_selected_icon (container, 1); } static gboolean has_multiple_selection (NautilusIconContainer *container) { return get_nth_selected_icon (container, 2) != NULL; } /** * nautilus_icon_container_show_stretch_handles: * @container: An icon container widget. * * Makes stretch handles visible on the first selected icon. **/ void nautilus_icon_container_show_stretch_handles (NautilusIconContainer *container) { NautilusIconContainerDetails *details; NautilusIcon *icon; int initial_size_x, initial_size_y; icon = get_first_selected_icon (container); if (icon == NULL) { return; } /* Check if it already has stretch handles. */ details = container->details; if (details->stretch_icon == icon) { return; } /* Get rid of the existing stretch handles and put them on the new icon. */ if (details->stretch_icon != NULL) { nautilus_icon_canvas_item_set_show_stretch_handles (details->stretch_icon->item, FALSE); ungrab_stretch_icon (container); } nautilus_icon_canvas_item_set_show_stretch_handles (icon->item, TRUE); details->stretch_icon = icon; icon_get_size (container, icon, &initial_size_x, &initial_size_y); /* only need to keep size in one dimension, since they are constrained to be the same */ container->details->initial_stretch_size = initial_size_x; } /** * nautilus_icon_container_has_stretch_handles * @container: An icon container widget. * * Returns true if the first selected item has stretch handles. **/ gboolean nautilus_icon_container_has_stretch_handles (NautilusIconContainer *container) { NautilusIcon *icon; icon = get_first_selected_icon (container); if (icon == NULL) { return FALSE; } return icon == container->details->stretch_icon; } /** * nautilus_icon_container_is_stretched * @container: An icon container widget. * * Returns true if the any selected item is stretched to a size other than 1.0. **/ gboolean nautilus_icon_container_is_stretched (NautilusIconContainer *container) { GList *p; NautilusIcon *icon; for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; if (icon->is_selected && (icon->scale_x != 1.0 || icon->scale_y != 1.0)) { return TRUE; } } return FALSE; } /** * nautilus_icon_container_unstretch * @container: An icon container widget. * * Gets rid of any icon stretching. **/ void nautilus_icon_container_unstretch (NautilusIconContainer *container) { GList *p; NautilusIcon *icon; for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; if (icon->is_selected) { nautilus_icon_container_move_icon (container, icon, icon->x, icon->y, 1.0, 1.0, FALSE, TRUE); } } } static void compute_stretch (StretchState *start, StretchState *current) { gboolean right, bottom; int x_stretch, y_stretch; /* Figure out which handle we are dragging. */ right = start->pointer_x > start->icon_x + (int) start->icon_size / 2; bottom = start->pointer_y > start->icon_y + (int) start->icon_size / 2; /* Figure out how big we should stretch. */ x_stretch = start->pointer_x - current->pointer_x; y_stretch = start->pointer_y - current->pointer_y; if (right) { x_stretch = - x_stretch; } if (bottom) { y_stretch = - y_stretch; } current->icon_size = MAX ((int)start->icon_size + MIN (x_stretch, y_stretch), (int)NAUTILUS_ICON_SIZE_SMALLEST); /* Figure out where the corner of the icon should be. */ current->icon_x = start->icon_x; if (!right) { current->icon_x += start->icon_size - current->icon_size; } current->icon_y = start->icon_y; if (!bottom) { current->icon_y += start->icon_size - current->icon_size; } } char * nautilus_icon_container_get_icon_uri (NautilusIconContainer *container, NautilusIcon *icon) { char *uri; uri = NULL; gtk_signal_emit (GTK_OBJECT (container), signals[GET_ICON_URI], icon->data, &uri); return uri; } char * nautilus_icon_container_get_icon_drop_target_uri (NautilusIconContainer *container, NautilusIcon *icon) { char *uri; uri = NULL; gtk_signal_emit (GTK_OBJECT (container), signals[GET_ICON_DROP_TARGET_URI], icon->data, &uri); return uri; } /* Switch from automatic layout to manual or vice versa. * If we switch to manual layout, we restore the icon positions from the * last manual layout. */ void nautilus_icon_container_set_auto_layout (NautilusIconContainer *container, gboolean auto_layout) { g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); g_return_if_fail (auto_layout == FALSE || auto_layout == TRUE); if (container->details->auto_layout == auto_layout) { return; } container->details->auto_layout = auto_layout; if (!auto_layout) { reload_icon_positions (container); nautilus_icon_container_freeze_icon_positions (container); } redo_layout (container); gtk_signal_emit (GTK_OBJECT (container), signals[LAYOUT_CHANGED]); } /* Toggle the tighter layout boolean. */ void nautilus_icon_container_set_tighter_layout (NautilusIconContainer *container, gboolean tighter_layout) { g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); g_return_if_fail (tighter_layout == FALSE || tighter_layout == TRUE); if (container->details->tighter_layout == tighter_layout) { return; } container->details->tighter_layout = tighter_layout; redo_layout (container); gtk_signal_emit (GTK_OBJECT (container), signals[LAYOUT_CHANGED]); } void nautilus_icon_container_set_layout_mode (NautilusIconContainer *container, NautilusIconLayoutMode mode) { g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); container->details->layout_mode = mode; redo_layout (container); gtk_signal_emit (GTK_OBJECT (container), signals[LAYOUT_CHANGED]); } /* Switch from automatic to manual layout, freezing all the icons in their * current positions instead of restoring icon positions from the last manual * layout as set_auto_layout does. */ void nautilus_icon_container_freeze_icon_positions (NautilusIconContainer *container) { gboolean changed; GList *p; NautilusIcon *icon; NautilusIconPosition position; changed = container->details->auto_layout; container->details->auto_layout = FALSE; for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; position.x = icon->x; position.y = icon->y; position.scale_x = icon->scale_x; position.scale_y = icon->scale_y; gtk_signal_emit (GTK_OBJECT (container), signals[ICON_POSITION_CHANGED], icon->data, &position); } if (changed) { gtk_signal_emit (GTK_OBJECT (container), signals[LAYOUT_CHANGED]); } } /* Re-sort, switching to automatic layout if it was in manual layout. */ void nautilus_icon_container_sort (NautilusIconContainer *container) { gboolean changed; changed = !container->details->auto_layout; container->details->auto_layout = TRUE; redo_layout (container); if (changed) { gtk_signal_emit (GTK_OBJECT (container), signals[LAYOUT_CHANGED]); } } gboolean nautilus_icon_container_is_auto_layout (NautilusIconContainer *container) { g_return_val_if_fail (NAUTILUS_IS_ICON_CONTAINER (container), FALSE); return container->details->auto_layout; } gboolean nautilus_icon_container_is_tighter_layout (NautilusIconContainer *container) { g_return_val_if_fail (NAUTILUS_IS_ICON_CONTAINER (container), FALSE); return container->details->tighter_layout; } static void pending_icon_to_rename_destroy_callback (NautilusIconCanvasItem *item, NautilusIconContainer *container) { g_assert (container->details->pending_icon_to_rename != NULL); g_assert (container->details->pending_icon_to_rename->item == item); container->details->pending_icon_to_rename = NULL; } static NautilusIcon* get_pending_icon_to_rename (NautilusIconContainer *container) { return container->details->pending_icon_to_rename; } static void set_pending_icon_to_rename (NautilusIconContainer *container, NautilusIcon *icon) { NautilusIcon *cur_pending; cur_pending = container->details->pending_icon_to_rename; if (icon == cur_pending) { return; } if (cur_pending != NULL) { gtk_signal_disconnect_by_func (GTK_OBJECT (cur_pending->item), &pending_icon_to_rename_destroy_callback, container); } if (icon != NULL) { gtk_signal_connect (GTK_OBJECT (icon->item), "destroy", &pending_icon_to_rename_destroy_callback, container); } container->details->pending_icon_to_rename = icon; } static void process_pending_icon_to_rename (NautilusIconContainer *container) { NautilusIcon *pending_icon_to_rename; pending_icon_to_rename = get_pending_icon_to_rename (container); if (pending_icon_to_rename != NULL) { if (pending_icon_to_rename->is_selected && !has_multiple_selection (container)) { nautilus_icon_container_start_renaming_selected_item (container); } else { set_pending_icon_to_rename (container, NULL); } } } gboolean is_renaming_pending (NautilusIconContainer *container) { return get_pending_icon_to_rename (container) != NULL; } gboolean is_renaming (NautilusIconContainer *container) { return container->details->renaming; } /** * nautilus_icon_container_start_renaming_selected_item * @container: An icon container widget. * * Displays the edit name widget on the first selected icon **/ void nautilus_icon_container_start_renaming_selected_item (NautilusIconContainer *container) { NautilusIconContainerDetails *details; NautilusIcon *icon; ArtDRect icon_rect; GdkFont *font; const char *editable_text; int max_text_width; int cx0, cx1, cy1; int marginX, marginY; /* Check if it already in renaming mode. */ details = container->details; if (details->renaming) { return; } /* Find selected icon */ icon = get_first_selected_icon (container); if (icon == NULL) { return; } g_assert (!has_multiple_selection (container)); if (!icon_is_positioned (icon)) { set_pending_icon_to_rename (container, icon); return; } set_pending_icon_to_rename (container, NULL); /* Make a copy of the original editable text for a later compare */ editable_text = nautilus_icon_canvas_item_get_editable_text (icon->item); /* This could conceivably be NULL if a rename was triggered really early. */ if (editable_text == NULL) { return; } details->original_text = g_strdup (editable_text); /* Create text renaming widget, if it hasn't been created already. We deal with the broken icon text item widget by keeping it around so its contents can still be cut and pasted as part of the clipboard */ g_assert (details->rename_widget == NULL); details->rename_widget = NAUTILUS_ICON_TEXT_ITEM (gnome_canvas_item_new (gnome_canvas_root (GNOME_CANVAS (container)), nautilus_icon_text_item_get_type (), NULL)); /* Determine widget position widget in container */ font = details->label_font[details->zoom_level]; max_text_width = floor (nautilus_icon_canvas_item_get_max_text_width (icon->item)); nautilus_icon_canvas_item_get_icon_rectangle (icon->item, &icon_rect); gnome_canvas_w2c (GNOME_CANVAS(container), icon_rect.x0, icon_rect.y0, &cx0, NULL); gnome_canvas_w2c (GNOME_CANVAS(container), icon_rect.x1, icon_rect.y1, &cx1, &cy1); cx0 += ((cx1 - cx0) - max_text_width) / 2; nautilus_icon_text_item_get_margins (&marginX, &marginY); nautilus_icon_text_item_configure (details->rename_widget, cx0 - marginX, /* x */ cy1 - marginY, /* y */ max_text_width + 4, /* width */ font, /* font */ editable_text, /* text */ TRUE); /* allocate local copy */ nautilus_icon_text_item_start_editing (details->rename_widget); nautilus_icon_container_update_icon (container, icon); gtk_signal_emit (GTK_OBJECT (container), signals[RENAMING_ICON], nautilus_icon_text_item_get_renaming_editable (details->rename_widget)); /* We are in renaming mode */ details->renaming = TRUE; nautilus_icon_canvas_item_set_renaming (icon->item, TRUE); } static void end_renaming_mode (NautilusIconContainer *container, gboolean commit) { NautilusIcon *icon; const char *changed_text; set_pending_icon_to_rename (container, NULL); icon = get_icon_being_renamed (container); if (icon == NULL) { return; } if (commit) { /* Verify that text has been modified before signalling change. */ changed_text = nautilus_icon_text_item_get_text (container->details->rename_widget); if (strcmp (container->details->original_text, changed_text) != 0) { gtk_signal_emit (GTK_OBJECT (container), signals[ICON_TEXT_CHANGED], icon->data, changed_text); } } nautilus_icon_text_item_stop_editing (container->details->rename_widget, TRUE); gtk_object_destroy (GTK_OBJECT (container->details->rename_widget)); container->details->rename_widget = NULL; g_free (container->details->original_text); /* We are not in renaming mode */ container->details->renaming = FALSE; nautilus_icon_canvas_item_set_renaming (icon->item, FALSE); } /* emit preview signal, called by the canvas item */ gboolean nautilus_icon_container_emit_preview_signal (NautilusIconContainer *icon_container, NautilusIcon *icon, gboolean start_flag) { gboolean result; g_return_val_if_fail (NAUTILUS_IS_ICON_CONTAINER (icon_container), FALSE); g_return_val_if_fail (icon != NULL, FALSE); g_return_val_if_fail (start_flag == FALSE || start_flag == TRUE, FALSE); result = FALSE; gtk_signal_emit (GTK_OBJECT (icon_container), signals[PREVIEW], icon->data, start_flag, &result); return result; } gboolean nautilus_icon_container_has_stored_icon_positions (NautilusIconContainer *container) { GList *p; NautilusIcon *icon; gboolean have_stored_position; NautilusIconPosition position; for (p = container->details->icons; p != NULL; p = p->next) { icon = p->data; have_stored_position = FALSE; gtk_signal_emit (GTK_OBJECT (container), signals[GET_STORED_ICON_POSITION], icon->data, &position, &have_stored_position); if (have_stored_position) { return TRUE; } } return FALSE; } void nautilus_icon_container_set_label_font_for_zoom_level (NautilusIconContainer *container, int zoom_level, GdkFont *font) { g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); g_return_if_fail (font != NULL); g_return_if_fail (zoom_level >= NAUTILUS_ZOOM_LEVEL_SMALLEST); g_return_if_fail (zoom_level <= NAUTILUS_ZOOM_LEVEL_LARGEST); if (container->details->label_font[zoom_level] != NULL) { gdk_font_unref (container->details->label_font[zoom_level]); } gdk_font_ref (font); container->details->label_font[zoom_level] = font; } void nautilus_icon_container_set_smooth_label_font (NautilusIconContainer *container, NautilusScalableFont *font) { g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); g_return_if_fail (NAUTILUS_IS_SCALABLE_FONT (font)); gtk_object_ref (GTK_OBJECT (font)); gtk_object_unref (GTK_OBJECT (container->details->smooth_label_font)); container->details->smooth_label_font = font; } void nautilus_icon_container_set_single_click_mode (NautilusIconContainer *container, gboolean single_click_mode) { g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); container->details->single_click_mode = single_click_mode; } /* update the label color when the background changes */ guint32 nautilus_icon_container_get_label_color (NautilusIconContainer *container, gboolean is_name) { g_return_val_if_fail (NAUTILUS_IS_ICON_CONTAINER (container), 0); if (is_name) { return container->details->label_color; } else { return container->details->label_info_color; } } static void update_label_color (NautilusBackground *background, NautilusIconContainer *container) { char *light_info_color, *dark_info_color; uint light_info_value, dark_info_value; g_assert (NAUTILUS_IS_BACKGROUND (background)); g_assert (NAUTILUS_IS_ICON_CONTAINER (container)); /* read the info colors from the current theme; use a reasonable default if undefined */ light_info_color = nautilus_theme_get_theme_data ("directory", "LIGHT_INFO_COLOR"); if (light_info_color == NULL) { light_info_value = 0xAAAAFD; } else { light_info_value = strtoul (light_info_color, NULL, 0); g_free (light_info_color); } dark_info_color = nautilus_theme_get_theme_data ("directory", "DARK_INFO_COLOR"); if (dark_info_color == NULL) { dark_info_value = 0x33337F; } else { dark_info_value = strtoul (dark_info_color, NULL, 0); g_free (dark_info_color); } if (nautilus_background_is_dark (background)) { container->details->label_color = 0xEFEFEF; container->details->label_info_color = light_info_value; } else { container->details->label_color = 0x000000; container->details->label_info_color = dark_info_value; } } /* Return if the icon container is a fixed size */ gboolean nautilus_icon_container_get_is_fixed_size (NautilusIconContainer *container) { g_return_val_if_fail (NAUTILUS_IS_ICON_CONTAINER (container), FALSE); return container->details->is_fixed_size; } /* Set the icon container to be a fixed size */ void nautilus_icon_container_set_is_fixed_size (NautilusIconContainer *container, gboolean is_fixed_size) { g_return_if_fail (NAUTILUS_IS_ICON_CONTAINER (container)); container->details->is_fixed_size = is_fixed_size; } /* handle theme changes */ static void nautilus_icon_container_theme_changed (gpointer user_data) { NautilusIconContainer *container; char *text_frame_path, *highlight_color_str; container = NAUTILUS_ICON_CONTAINER (user_data); /* load the highlight frame */ text_frame_path = nautilus_theme_get_image_path ("text-selection-frame.png"); if (container->details->highlight_frame) { gdk_pixbuf_unref (container->details->highlight_frame); } container->details->highlight_frame = gdk_pixbuf_new_from_file (text_frame_path); g_free (text_frame_path); /* load the highlight color */ highlight_color_str = nautilus_theme_get_theme_data ("directory", "HIGHLIGHT_COLOR_RGBA"); if (highlight_color_str == NULL) { container->details->highlight_color = 0x00000066; } else { container->details->highlight_color = strtoul (highlight_color_str, NULL, 0); g_free (highlight_color_str); } } #if ! defined (NAUTILUS_OMIT_SELF_CHECK) static char * check_compute_stretch (int icon_x, int icon_y, int icon_size, int start_pointer_x, int start_pointer_y, int end_pointer_x, int end_pointer_y) { StretchState start, current; start.icon_x = icon_x; start.icon_y = icon_y; start.icon_size = icon_size; start.pointer_x = start_pointer_x; start.pointer_y = start_pointer_y; current.pointer_x = end_pointer_x; current.pointer_y = end_pointer_y; compute_stretch (&start, ¤t); return g_strdup_printf ("%d,%d:%d", current.icon_x, current.icon_y, current.icon_size); } void nautilus_self_check_icon_container (void) { NAUTILUS_CHECK_STRING_RESULT (check_compute_stretch (0, 0, 12, 0, 0, 0, 0), "0,0:12"); NAUTILUS_CHECK_STRING_RESULT (check_compute_stretch (0, 0, 12, 12, 12, 13, 13), "0,0:13"); NAUTILUS_CHECK_STRING_RESULT (check_compute_stretch (0, 0, 12, 12, 12, 13, 12), "0,0:12"); NAUTILUS_CHECK_STRING_RESULT (check_compute_stretch (100, 100, 64, 105, 105, 40, 40), "35,35:129"); } #endif /* ! NAUTILUS_OMIT_SELF_CHECK */