/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */ /* Nautilus - Icon canvas item class for icon container. * * Copyright (C) 2000 Eazel, Inc * * Author: Andy Hertzfeld * * This 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. * * This 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 this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include #include "nautilus-icon-canvas-item.h" #include #include #include #include #include #include #include #include #include #include #include #include #include "nautilus-icon-private.h" #include "nautilus-string.h" #include "nautilus-glib-extensions.h" #include "nautilus-gdk-extensions.h" #include "nautilus-gdk-pixbuf-extensions.h" #include "nautilus-global-preferences.h" #include "nautilus-gtk-macros.h" #include "nautilus-gnome-extensions.h" #include "nautilus-graphic-effects.h" #include "nautilus-file-utilities.h" #include "nautilus-icon-factory.h" #include "nautilus-theme.h" /* Comment this out if the new smooth fonts code give you problems * This isnt meant to be permanent. Its just a precaution. */ #define EMBLEM_SPACING 2 /* gap between bottom of icon and start of text box */ #define LABEL_OFFSET 2 #define MAX_TEXT_WIDTH_STANDARD 135 #define MAX_TEXT_WIDTH_TIGHTER 80 /* The list of characters that cause line breaks can be localized. */ #define LINE_BREAK_CHARACTERS _(" -_,;.?/&") /* Private part of the NautilusIconCanvasItem structure. */ struct NautilusIconCanvasItemDetails { /* The image, text, font. */ GdkPixbuf *pixbuf; GList *emblem_pixbufs; char *editable_text; /* Text that can be modified by a renaming function */ char *additional_text; /* Text that cannot be modifed, such as file size, etc. */ GdkFont *font; NautilusEmblemAttachPoints *attach_points; /* Size of the text at current font. */ int text_width; int text_height; /* preview state */ guint is_active : 1; /* Highlight state. */ guint is_highlighted_for_selection : 1; guint is_highlighted_as_keyboard_focus: 1; guint is_highlighted_for_drop : 1; guint show_stretch_handles : 1; guint is_prelit : 1; gboolean is_renaming; /* Font stuff whilst in smooth mode */ guint smooth_font_size; NautilusScalableFont *smooth_font; }; /* Object argument IDs. */ enum { ARG_0, ARG_EDITABLE_TEXT, ARG_ADDITIONAL_TEXT, ARG_FONT, ARG_HIGHLIGHTED_FOR_SELECTION, ARG_HIGHLIGHTED_AS_KEYBOARD_FOCUS, ARG_HIGHLIGHTED_FOR_DROP, ARG_MODIFIER, ARG_SMOOTH_FONT_SIZE, ARG_SMOOTH_FONT }; typedef enum { RIGHT_SIDE, BOTTOM_SIDE, LEFT_SIDE, TOP_SIDE } RectangleSide; typedef struct { NautilusIconCanvasItem *icon_item; ArtIRect icon_rect; RectangleSide side; int position; int index; GList *emblem; } EmblemLayout; enum { BOUNDS_CHANGED, LAST_SIGNAL }; static guint signals[LAST_SIGNAL]; static guint32 highlight_background_color = NAUTILUS_RGBA_COLOR_PACK (0x00, 0x00, 0x00, 0xFF); static guint32 highlight_text_color = NAUTILUS_RGBA_COLOR_PACK (0xFF, 0xFF, 0xFF, 0xFF); static guint32 highlight_text_info_color = NAUTILUS_RGBA_COLOR_PACK (0xCC, 0xCC, 0xCC, 0xFF); /* GtkObject */ static void nautilus_icon_canvas_item_initialize_class (NautilusIconCanvasItemClass *class); static void nautilus_icon_canvas_item_initialize (NautilusIconCanvasItem *item); static void nautilus_icon_canvas_item_destroy (GtkObject *object); static int nautilus_icon_canvas_item_event (GnomeCanvasItem *item, GdkEvent *event); static void nautilus_icon_canvas_item_set_arg (GtkObject *object, GtkArg *arg, guint arg_id); static void nautilus_icon_canvas_item_get_arg (GtkObject *object, GtkArg *arg, guint arg_id); /* GnomeCanvasItem */ static void nautilus_icon_canvas_item_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags); static void nautilus_icon_canvas_item_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x, int y, int width, int height); static void nautilus_icon_canvas_item_render (GnomeCanvasItem *item, GnomeCanvasBuf *buffer); static double nautilus_icon_canvas_item_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item); static void nautilus_icon_canvas_item_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2); /* private */ static void draw_or_measure_label_text (NautilusIconCanvasItem *item, GdkDrawable *drawable, int icon_left, int icon_bottom); static void draw_or_measure_label_text_aa (NautilusIconCanvasItem *item, GdkPixbuf *destination_pixbuf, int icon_left, int icon_bottom); static void draw_label_text (NautilusIconCanvasItem *item, GdkDrawable *drawable, int icon_left, int icon_bottom); static void measure_label_text (NautilusIconCanvasItem *item); static void get_icon_canvas_rectangle (NautilusIconCanvasItem *item, ArtIRect *rect); static void emblem_layout_reset (EmblemLayout *layout, NautilusIconCanvasItem *icon_item, const ArtIRect *icon_rect); static gboolean emblem_layout_next (EmblemLayout *layout, GdkPixbuf **emblem_pixbuf, ArtIRect *emblem_rect); static void draw_pixbuf (GdkPixbuf *pixbuf, GdkDrawable *drawable, int x, int y); static gboolean hit_test_stretch_handle (NautilusIconCanvasItem *item, const ArtIRect *canvas_rect); static void draw_pixbuf_aa (GdkPixbuf *pixbuf, GnomeCanvasBuf *buf, double affine[6], int x_offset, int y_offset); static gboolean icon_canvas_item_is_smooth (const NautilusIconCanvasItem *icon_item); static void draw_dashed_rectangle_aa (guchar *pixels, int rowstride, gboolean has_alpha, int widt, int height, int left, int right, int top, int bottom); NAUTILUS_DEFINE_CLASS_BOILERPLATE (NautilusIconCanvasItem, nautilus_icon_canvas_item, GNOME_TYPE_CANVAS_ITEM) /* Class initialization function for the icon canvas item. */ static void nautilus_icon_canvas_item_initialize_class (NautilusIconCanvasItemClass *class) { GtkObjectClass *object_class; GnomeCanvasItemClass *item_class; object_class = GTK_OBJECT_CLASS (class); item_class = GNOME_CANVAS_ITEM_CLASS (class); gtk_object_add_arg_type ("NautilusIconCanvasItem::editable_text", GTK_TYPE_STRING, GTK_ARG_READWRITE, ARG_EDITABLE_TEXT); gtk_object_add_arg_type ("NautilusIconCanvasItem::additional_text", GTK_TYPE_STRING, GTK_ARG_READWRITE, ARG_ADDITIONAL_TEXT); gtk_object_add_arg_type ("NautilusIconCanvasItem::font", GTK_TYPE_BOXED, GTK_ARG_READWRITE, ARG_FONT); gtk_object_add_arg_type ("NautilusIconCanvasItem::highlighted_for_selection", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_HIGHLIGHTED_FOR_SELECTION); gtk_object_add_arg_type ("NautilusIconCanvasItem::highlighted_as_keyboard_focus", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_HIGHLIGHTED_AS_KEYBOARD_FOCUS); gtk_object_add_arg_type ("NautilusIconCanvasItem::highlighted_for_drop", GTK_TYPE_BOOL, GTK_ARG_READWRITE, ARG_HIGHLIGHTED_FOR_DROP); gtk_object_add_arg_type ("NautilusIconCanvasItem::smooth_font_size", GTK_TYPE_UINT, GTK_ARG_READWRITE, ARG_SMOOTH_FONT_SIZE); gtk_object_add_arg_type ("NautilusIconCanvasItem::smooth_font", GTK_TYPE_OBJECT, GTK_ARG_READWRITE, ARG_SMOOTH_FONT); object_class->destroy = nautilus_icon_canvas_item_destroy; object_class->set_arg = nautilus_icon_canvas_item_set_arg; object_class->get_arg = nautilus_icon_canvas_item_get_arg; signals[BOUNDS_CHANGED] = gtk_signal_new ("bounds_changed", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (NautilusIconCanvasItemClass, bounds_changed), gtk_marshal_NONE__NONE, GTK_TYPE_NONE, 0); gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL); item_class->update = nautilus_icon_canvas_item_update; item_class->draw = nautilus_icon_canvas_item_draw; item_class->render = nautilus_icon_canvas_item_render; item_class->point = nautilus_icon_canvas_item_point; item_class->bounds = nautilus_icon_canvas_item_bounds; item_class->event = nautilus_icon_canvas_item_event; } /* Object initialization function for the icon item. */ static void nautilus_icon_canvas_item_initialize (NautilusIconCanvasItem *icon_item) { NautilusIconCanvasItemDetails *details; details = g_new0 (NautilusIconCanvasItemDetails, 1); icon_item->details = details; icon_item->details->is_renaming = FALSE; icon_item->details->smooth_font_size = 12; icon_item->details->smooth_font = nautilus_scalable_font_get_default_font (); } /* Destroy handler for the icon canvas item. */ static void nautilus_icon_canvas_item_destroy (GtkObject *object) { GnomeCanvasItem *item; NautilusIconCanvasItem *icon_item; NautilusIconCanvasItemDetails *details; g_return_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (object)); item = GNOME_CANVAS_ITEM (object); icon_item = (NAUTILUS_ICON_CANVAS_ITEM (object)); details = icon_item->details; gnome_canvas_request_redraw (item->canvas, item->x1, item->y1, item->x2, item->y2); if (details->pixbuf != NULL) { gdk_pixbuf_unref (details->pixbuf); } nautilus_gdk_pixbuf_list_free (details->emblem_pixbufs); g_free (details->editable_text); g_free (details->additional_text); g_free (details->attach_points); if (details->font != NULL) { gdk_font_unref (details->font); } gtk_object_unref (GTK_OBJECT (icon_item->details->smooth_font)); icon_item->details->smooth_font = NULL; g_free (details); NAUTILUS_CALL_PARENT_CLASS (GTK_OBJECT_CLASS, destroy, (object)); } /* Currently we require pixbufs in this format (for hit testing). * Perhaps gdk-pixbuf will be changed so it can do the hit testing * and we won't have this requirement any more. */ static gboolean pixbuf_is_acceptable (GdkPixbuf *pixbuf) { return gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB && ((!gdk_pixbuf_get_has_alpha (pixbuf) && gdk_pixbuf_get_n_channels (pixbuf) == 3) || (gdk_pixbuf_get_has_alpha (pixbuf) && gdk_pixbuf_get_n_channels (pixbuf) == 4)) && gdk_pixbuf_get_bits_per_sample (pixbuf) == 8; } /* Set_arg handler for the icon item. */ static void nautilus_icon_canvas_item_set_arg (GtkObject *object, GtkArg *arg, guint arg_id) { NautilusIconCanvasItemDetails *details; GdkFont *font; details = NAUTILUS_ICON_CANVAS_ITEM (object)->details; switch (arg_id) { case ARG_EDITABLE_TEXT: if (nautilus_strcmp (details->editable_text, GTK_VALUE_STRING (*arg)) == 0) { return; } g_free (details->editable_text); details->editable_text = g_strdup (GTK_VALUE_STRING (*arg)); break; case ARG_ADDITIONAL_TEXT: if (nautilus_strcmp (details->additional_text, GTK_VALUE_STRING (*arg)) == 0) { return; } g_free (details->additional_text); details->additional_text = g_strdup (GTK_VALUE_STRING (*arg)); break; case ARG_FONT: font = GTK_VALUE_BOXED (*arg); if (nautilus_gdk_font_equal (font, details->font)) { return; } if (font != NULL) { gdk_font_ref (font); } if (details->font != NULL) { gdk_font_unref (details->font); } details->font = font; break; case ARG_HIGHLIGHTED_FOR_SELECTION: if (!details->is_highlighted_for_selection == !GTK_VALUE_BOOL (*arg)) { return; } details->is_highlighted_for_selection = GTK_VALUE_BOOL (*arg); break; case ARG_HIGHLIGHTED_AS_KEYBOARD_FOCUS: if (!details->is_highlighted_as_keyboard_focus == !GTK_VALUE_BOOL (*arg)) { return; } details->is_highlighted_as_keyboard_focus = GTK_VALUE_BOOL (*arg); break; case ARG_HIGHLIGHTED_FOR_DROP: if (!details->is_highlighted_for_drop == !GTK_VALUE_BOOL (*arg)) { return; } details->is_highlighted_for_drop = GTK_VALUE_BOOL (*arg); break; case ARG_SMOOTH_FONT: nautilus_icon_canvas_item_set_smooth_font (NAUTILUS_ICON_CANVAS_ITEM (object), NAUTILUS_SCALABLE_FONT (GTK_VALUE_OBJECT (*arg))); break; case ARG_SMOOTH_FONT_SIZE: nautilus_icon_canvas_item_set_smooth_font_size (NAUTILUS_ICON_CANVAS_ITEM (object), GTK_VALUE_UINT (*arg)); break; default: g_warning ("nautilus_icons_view_item_item_set_arg on unknown argument"); return; } gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (object)); } /* Get_arg handler for the icon item */ static void nautilus_icon_canvas_item_get_arg (GtkObject *object, GtkArg *arg, guint arg_id) { NautilusIconCanvasItemDetails *details; details = NAUTILUS_ICON_CANVAS_ITEM (object)->details; switch (arg_id) { case ARG_EDITABLE_TEXT: GTK_VALUE_STRING (*arg) = g_strdup (details->editable_text); break; case ARG_ADDITIONAL_TEXT: GTK_VALUE_STRING (*arg) = g_strdup (details->additional_text); break; case ARG_FONT: GTK_VALUE_BOXED (*arg) = details->font; break; case ARG_HIGHLIGHTED_FOR_SELECTION: GTK_VALUE_BOOL (*arg) = details->is_highlighted_for_selection; break; case ARG_HIGHLIGHTED_AS_KEYBOARD_FOCUS: GTK_VALUE_BOOL (*arg) = details->is_highlighted_as_keyboard_focus; break; case ARG_HIGHLIGHTED_FOR_DROP: GTK_VALUE_BOOL (*arg) = details->is_highlighted_for_drop; break; case ARG_SMOOTH_FONT: gtk_object_ref (GTK_OBJECT (details->smooth_font)); GTK_VALUE_OBJECT (*arg) = GTK_OBJECT (details->smooth_font); break; case ARG_SMOOTH_FONT_SIZE: GTK_VALUE_UINT (*arg) = details->smooth_font_size; break; default: arg->type = GTK_TYPE_INVALID; break; } } GdkPixbuf * nautilus_icon_canvas_item_get_image (NautilusIconCanvasItem *item) { NautilusIconCanvasItemDetails *details; g_return_val_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (item), NULL); details = item->details; return details->pixbuf; } void nautilus_icon_canvas_item_set_image (NautilusIconCanvasItem *item, GdkPixbuf *image) { NautilusIconCanvasItemDetails *details; g_return_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (item)); g_return_if_fail (image == NULL || pixbuf_is_acceptable (image)); details = item->details; if (details->pixbuf == image) { return; } if (image != NULL) { gdk_pixbuf_ref (image); } if (details->pixbuf != NULL) { gdk_pixbuf_unref (details->pixbuf); } details->pixbuf = image; gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (item)); } void nautilus_icon_canvas_item_set_emblems (NautilusIconCanvasItem *item, GList *emblem_pixbufs) { GList *p; g_return_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (item)); g_assert (item->details->emblem_pixbufs != emblem_pixbufs || emblem_pixbufs == NULL); /* The case where the emblems are identical is fairly common, * so lets take the time to check for it. */ if (nautilus_g_list_equal (item->details->emblem_pixbufs, emblem_pixbufs)) { return; } /* Check if they are acceptable. */ for (p = emblem_pixbufs; p != NULL; p = p->next) { g_return_if_fail (pixbuf_is_acceptable (p->data)); } /* Take in the new list of emblems. */ nautilus_gdk_pixbuf_list_ref (emblem_pixbufs); nautilus_gdk_pixbuf_list_free (item->details->emblem_pixbufs); item->details->emblem_pixbufs = g_list_copy (emblem_pixbufs); gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (item)); } void nautilus_icon_canvas_item_set_attach_points (NautilusIconCanvasItem *item, NautilusEmblemAttachPoints *attach_points) { g_free (item->details->attach_points); item->details->attach_points = NULL; if (attach_points != NULL && attach_points->num_points != 0) { item->details->attach_points = g_new (NautilusEmblemAttachPoints, 1); *item->details->attach_points = *attach_points; } } /* Recomputes the bounding box of a icon canvas item. * This is a generic implementation that could be used for any canvas item * class, it has no assumptions about how the item is used. */ static void recompute_bounding_box (NautilusIconCanvasItem *icon_item) { /* The bounds stored in the item is the same as what get_bounds * returns, except it's in canvas coordinates instead of the item's * parent's coordinates. */ GnomeCanvasItem *item; ArtPoint top_left, bottom_right; double i2c[6]; item = GNOME_CANVAS_ITEM (icon_item); gnome_canvas_item_get_bounds (item, &top_left.x, &top_left.y, &bottom_right.x, &bottom_right.y); gnome_canvas_item_i2c_affine (item->parent, i2c); art_affine_point (&top_left, &top_left, i2c); art_affine_point (&bottom_right, &bottom_right, i2c); item->x1 = top_left.x; item->y1 = top_left.y; item->x2 = bottom_right.x; item->y2 = bottom_right.y; } void nautilus_icon_canvas_item_update_bounds (NautilusIconCanvasItem *item) { ArtIRect before, after; /* Compute new bounds. */ nautilus_gnome_canvas_item_get_current_canvas_bounds (GNOME_CANVAS_ITEM (item), &before); recompute_bounding_box (item); nautilus_gnome_canvas_item_get_current_canvas_bounds (GNOME_CANVAS_ITEM (item), &after); /* If the bounds didn't change, we are done. */ if (nautilus_art_irect_equal (&before, &after)) { return; } /* Send out the bounds_changed signal and queue a redraw. */ nautilus_gnome_canvas_request_redraw_rectangle (GNOME_CANVAS_ITEM (item)->canvas, &before); gtk_signal_emit (GTK_OBJECT (item), signals[BOUNDS_CHANGED]); nautilus_gnome_canvas_item_request_redraw (GNOME_CANVAS_ITEM (item)); } /* Update handler for the icon canvas item. */ static void nautilus_icon_canvas_item_update (GnomeCanvasItem *item, double *affine, ArtSVP *clip_path, int flags) { nautilus_icon_canvas_item_update_bounds (NAUTILUS_ICON_CANVAS_ITEM (item)); nautilus_gnome_canvas_item_request_redraw (item); NAUTILUS_CALL_PARENT_CLASS (GNOME_CANVAS_ITEM_CLASS, update, (item, affine, clip_path, flags)); } /* Rendering */ /* routine to underline the text in a gnome_icon_text structure */ static void gnome_icon_underline_text (GnomeIconTextInfo *text_info, GdkDrawable *drawable, GdkGC *gc, int x, int y) { GList *item; int text_width; GnomeIconTextInfoRow *row; int xpos; y += text_info->font->ascent; for (item = text_info->rows; item; item = item->next) { if (item->data) { row = item->data; xpos = (text_info->width - row->width) / 2; text_width = gdk_text_width_wc(text_info->font, row->text_wc, row->text_length); gdk_draw_line(drawable, gc, x + xpos, y + 1, x + xpos + text_width, y + 1); y += text_info->baseline_skip; } else y += text_info->baseline_skip / 2; } } static gboolean in_single_click_mode () { /* Perhaps this should be computed elsewhere and passed in. */ return nautilus_preferences_get_enum (NAUTILUS_PREFERENCES_CLICK_POLICY, NAUTILUS_CLICK_POLICY_DOUBLE) == NAUTILUS_CLICK_POLICY_SINGLE; } /* Draw the text in a box, using gnomelib routines. */ static void draw_or_measure_label_text (NautilusIconCanvasItem *item, GdkDrawable *drawable, int icon_left, int icon_bottom) { NautilusIconCanvasItemDetails *details; int width_so_far, height_so_far; GdkGC* gc; GdkGCValues save_gc; guint32 label_color; GnomeCanvasItem *canvas_item; int max_text_width; int icon_width, text_left, box_left; GnomeIconTextInfo *icon_text_info; char **pieces; const char *text_piece; int i; char *combined_text; gboolean have_editable, have_additional, needs_highlight; gc = NULL; icon_width = 0; details = item->details; needs_highlight = details->is_highlighted_for_selection || details->is_highlighted_for_drop; have_editable = details->editable_text != NULL && details->editable_text[0] != '\0'; have_additional = details->additional_text != NULL && details->additional_text[0] != '\0'; /* No font or no text, then do no work. */ if (details->font == NULL || (!have_editable && !have_additional)) { details->text_height = 0; details->text_width = 0; return; } /* Combine editable and additional text for processing */ combined_text = g_strconcat (have_editable ? details->editable_text : "", (have_editable && have_additional) ? "\n" : "", have_additional ? details->additional_text : "", NULL); width_so_far = 0; height_so_far = 0; canvas_item = GNOME_CANVAS_ITEM (item); if (drawable != NULL) { icon_width = details->pixbuf == NULL ? 0 : gdk_pixbuf_get_width (details->pixbuf); gc = gdk_gc_new (canvas_item->canvas->layout.bin_window); gdk_gc_get_values (gc, &save_gc); } max_text_width = floor (nautilus_icon_canvas_item_get_max_text_width (item)); /* if the icon is highlighted, do some set-up */ if (needs_highlight && drawable != NULL && !details->is_renaming) { gdk_rgb_gc_set_foreground (gc, highlight_background_color); gdk_draw_rectangle (drawable, gc, TRUE, icon_left + (icon_width - details->text_width) / 2, icon_bottom, details->text_width, details->text_height); gdk_rgb_gc_set_foreground (gc, highlight_text_color); } if (!needs_highlight && drawable != NULL) { label_color = nautilus_icon_container_get_label_color (NAUTILUS_ICON_CONTAINER (canvas_item->canvas), TRUE); gdk_rgb_gc_set_foreground (gc, label_color); } pieces = g_strsplit (combined_text, "\n", 0); for (i = 0; (text_piece = pieces[i]) != NULL; i++) { /* Replace empty string with space for measurement and drawing. * This makes empty lines appear, instead of being collapsed out. */ if (text_piece[0] == '\0') { text_piece = " "; } icon_text_info = gnome_icon_layout_text (details->font, text_piece, LINE_BREAK_CHARACTERS, max_text_width, TRUE); /* Draw text if we are not in user rename mode */ if (drawable != NULL && !details->is_renaming) { text_left = icon_left + (icon_width - icon_text_info->width) / 2; gnome_icon_paint_text (icon_text_info, drawable, gc, text_left, icon_bottom + height_so_far, GTK_JUSTIFY_CENTER); /* if it's highlighted, embolden by drawing twice */ if (needs_highlight) { gnome_icon_paint_text (icon_text_info, drawable, gc, text_left + 1, icon_bottom + height_so_far, GTK_JUSTIFY_CENTER); } /* if it's prelit, and we're in click-to-activate mode, underline the text */ if (details->is_prelit && in_single_click_mode ()) { gnome_icon_underline_text (icon_text_info, drawable, gc, text_left + 1, icon_bottom + height_so_far); } } if (drawable != NULL && i == 0) { if (needs_highlight) { gdk_rgb_gc_set_foreground (gc, highlight_text_info_color); } else { label_color = nautilus_icon_container_get_label_color (NAUTILUS_ICON_CONTAINER (canvas_item->canvas), FALSE); gdk_rgb_gc_set_foreground (gc, label_color); } } width_so_far = MAX (width_so_far, icon_text_info->width); height_so_far += icon_text_info->height; gnome_icon_text_info_free (icon_text_info); } g_strfreev (pieces); if (needs_highlight) { height_so_far += 2; /* extra slop for nicer highlighting */ width_so_far += 4; /* account for emboldening, plus extra to make it look nicer */ } if (drawable != NULL) { /* Current calculations should match what we measured before drawing. * This assumes that we will always make a separate call to measure * before the call to draw. We might later decide to use this function * differently and change these asserts. */ g_assert (height_so_far == details->text_height); g_assert (width_so_far == details->text_width); gdk_gc_set_foreground (gc, &save_gc.foreground); box_left = icon_left + (icon_width - width_so_far) / 2; /* indicate keyboard selection by framing the text with a gray-stippled rectangle */ if (details->is_highlighted_as_keyboard_focus) { gdk_gc_set_stipple (gc, nautilus_stipple_bitmap ()); gdk_gc_set_fill (gc, GDK_STIPPLED); gdk_draw_rectangle (drawable, gc, FALSE, box_left, icon_bottom - 2, width_so_far, 2 + height_so_far); } gdk_gc_unref (gc); } else { /* If measuring, remember the width & height. */ details->text_width = width_so_far; details->text_height = height_so_far; } g_free (combined_text); } static void measure_label_text (NautilusIconCanvasItem *item) { if (icon_canvas_item_is_smooth (item)) { draw_or_measure_label_text_aa (item, NULL, 0, 0); } else { draw_or_measure_label_text (item, NULL, 0, 0); } } static void draw_label_text (NautilusIconCanvasItem *item, GdkDrawable *drawable, int icon_left, int icon_bottom) { draw_or_measure_label_text (item, drawable, icon_left, icon_bottom + LABEL_OFFSET); } static void draw_stretch_handles (NautilusIconCanvasItem *item, GdkDrawable *drawable, const ArtIRect *rect) { GdkGC *gc; char *knob_filename; GdkPixbuf *knob_pixbuf; int knob_width, knob_height; if (!item->details->show_stretch_handles) { return; } gc = gdk_gc_new (drawable); knob_filename = nautilus_theme_get_image_path ("knob.png"); knob_pixbuf = gdk_pixbuf_new_from_file (knob_filename); knob_width = gdk_pixbuf_get_width (knob_pixbuf); knob_height = gdk_pixbuf_get_height (knob_pixbuf); /* first draw the box */ gdk_gc_set_stipple (gc, nautilus_stipple_bitmap ()); gdk_gc_set_fill (gc, GDK_STIPPLED); gdk_draw_rectangle (drawable, gc, FALSE, rect->x0, rect->y0, rect->x1 - rect->x0 - 1, rect->y1 - rect->y0 - 1); /* draw the stretch handles themselves */ draw_pixbuf (knob_pixbuf, drawable, rect->x0, rect->y0); draw_pixbuf (knob_pixbuf, drawable, rect->x0, rect->y1 - knob_height); draw_pixbuf (knob_pixbuf, drawable, rect->x1 - knob_width, rect->y0); draw_pixbuf (knob_pixbuf, drawable, rect->x1 - knob_width, rect->y1 - knob_height); g_free(knob_filename); gdk_pixbuf_unref(knob_pixbuf); gdk_gc_unref (gc); } /* draw the stretch handles in the anti-aliased canvas */ static void draw_stretch_handles_aa (NautilusIconCanvasItem *item, GnomeCanvasBuf *buf, const ArtIRect *rect) { int knob_width, knob_height; GnomeCanvasItem *canvas_item; char *knob_filename; GdkPixbuf *knob_pixbuf; ArtIRect box_rect, draw_rect; double affine[6]; if (!item->details->show_stretch_handles) { return; } canvas_item = GNOME_CANVAS_ITEM (item); knob_filename = nautilus_theme_get_image_path ("knob.png"); knob_pixbuf = gdk_pixbuf_new_from_file (knob_filename); knob_width = gdk_pixbuf_get_width (knob_pixbuf); knob_height = gdk_pixbuf_get_height (knob_pixbuf); art_affine_identity (affine); /* draw a box to connect the dots */ box_rect.x0 = rect->x0; box_rect.y0 = rect->y0; box_rect.x1 = rect->x1; box_rect.y1 = rect->y1; art_irect_intersect (&draw_rect, &box_rect, &buf->rect); if (!art_irect_empty (&draw_rect)) { draw_dashed_rectangle_aa (buf->buf, buf->buf_rowstride, FALSE, buf->rect.x1 - buf->rect.x0, buf->rect.y1 - buf->rect.y0, box_rect.x0 - buf->rect.x0, box_rect.y0 - buf->rect.y0, box_rect.x1 - buf->rect.x0, box_rect.y1 - buf->rect.y0); } /* now draw the stretch handles themselves */ draw_pixbuf_aa (knob_pixbuf, buf, affine, rect->x0, rect->y0); draw_pixbuf_aa (knob_pixbuf, buf, affine, rect->x0, rect->y1 - knob_height); draw_pixbuf_aa (knob_pixbuf, buf, affine, rect->x1 - knob_width, rect->y0); draw_pixbuf_aa (knob_pixbuf, buf, affine, rect->x1 - knob_width, rect->y1 - knob_height); g_free(knob_filename); gdk_pixbuf_unref(knob_pixbuf); } static void emblem_layout_reset (EmblemLayout *layout, NautilusIconCanvasItem *icon_item, const ArtIRect *icon_rect) { layout->icon_item = icon_item; layout->icon_rect = *icon_rect; layout->side = RIGHT_SIDE; layout->position = 0; layout->index = 0; layout->emblem = icon_item->details->emblem_pixbufs; } static gboolean emblem_layout_next (EmblemLayout *layout, GdkPixbuf **emblem_pixbuf, ArtIRect *emblem_rect) { GdkPixbuf *pixbuf; int width, height, x, y; NautilusEmblemAttachPoints *attach_points; /* Check if we have layed out all of the pixbufs. */ if (layout->emblem == NULL) { return FALSE; } /* Get the pixbuf. */ pixbuf = layout->emblem->data; width = gdk_pixbuf_get_width (pixbuf); height = gdk_pixbuf_get_height (pixbuf); /* Advance to the next emblem. */ layout->emblem = layout->emblem->next; attach_points = layout->icon_item->details->attach_points; if (attach_points != NULL) { if (layout->index >= attach_points->num_points) { return FALSE; } x = layout->icon_rect.x0 + attach_points->points[layout->index].x; y = layout->icon_rect.y0 + attach_points->points[layout->index].y; layout->index += 1; /* Return the rectangle and pixbuf. */ *emblem_pixbuf = pixbuf; emblem_rect->x0 = x - width / 2; emblem_rect->y0 = y - height / 2; emblem_rect->x1 = emblem_rect->x0 + width; emblem_rect->y1 = emblem_rect->y0 + height; return TRUE; } for (;;) { /* Find the side to lay out along. */ switch (layout->side) { case RIGHT_SIDE: x = layout->icon_rect.x1; y = layout->icon_rect.y0; break; case BOTTOM_SIDE: x = layout->icon_rect.x1; y = layout->icon_rect.y1; break; case LEFT_SIDE: x = layout->icon_rect.x0; y = layout->icon_rect.y1; break; case TOP_SIDE: x = layout->icon_rect.x0; y = layout->icon_rect.y0; break; default: g_assert_not_reached (); x = 0; y = 0; break; } if (layout->position != 0) { switch (layout->side) { case RIGHT_SIDE: y += layout->position + height / 2; break; case BOTTOM_SIDE: x -= layout->position + width / 2; break; case LEFT_SIDE: y -= layout->position + height / 2; break; case TOP_SIDE: x += layout->position + width / 2; break; } } /* Check to see if emblem fits in current side. */ if (x >= layout->icon_rect.x0 && x <= layout->icon_rect.x1 && y >= layout->icon_rect.y0 && y <= layout->icon_rect.y1) { /* It fits. */ /* Advance along the side. */ switch (layout->side) { case RIGHT_SIDE: case LEFT_SIDE: layout->position += height + EMBLEM_SPACING; break; case BOTTOM_SIDE: case TOP_SIDE: layout->position += width + EMBLEM_SPACING; break; } /* Return the rectangle and pixbuf. */ *emblem_pixbuf = pixbuf; emblem_rect->x0 = x - width / 2; emblem_rect->y0 = y - height / 2; emblem_rect->x1 = emblem_rect->x0 + width; emblem_rect->y1 = emblem_rect->y0 + height; return TRUE; } /* It doesn't fit, so move to the next side. */ switch (layout->side) { case RIGHT_SIDE: layout->side = BOTTOM_SIDE; break; case BOTTOM_SIDE: layout->side = LEFT_SIDE; break; case LEFT_SIDE: layout->side = TOP_SIDE; break; case TOP_SIDE: default: return FALSE; } layout->position = 0; } } static void draw_pixbuf (GdkPixbuf *pixbuf, GdkDrawable *drawable, int x, int y) { /* FIXME bugzilla.eazel.com 703: * Dither would be better if we passed dither values. */ gdk_pixbuf_render_to_drawable_alpha (pixbuf, drawable, 0, 0, x, y, gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf), GDK_PIXBUF_ALPHA_BILEVEL, 128, GDK_RGB_DITHER_MAX, 0, 0); } static void draw_pixbuf_aa (GdkPixbuf *pixbuf, GnomeCanvasBuf *buf, double affine[6], int x_offset, int y_offset) { void (* affine_function) (art_u8 *dst, int x0, int y0, int x1, int y1, int dst_rowstride, const art_u8 *src, int src_width, int src_height, int src_rowstride, const double affine[6], ArtFilterLevel level, ArtAlphaGamma *alpha_gamma); affine[4] += x_offset; affine[5] += y_offset; affine_function = gdk_pixbuf_get_has_alpha (pixbuf) ? art_rgb_rgba_affine : art_rgb_affine; (* affine_function) (buf->buf, buf->rect.x0, buf->rect.y0, buf->rect.x1, buf->rect.y1, buf->buf_rowstride, gdk_pixbuf_get_pixels (pixbuf), gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf), gdk_pixbuf_get_rowstride (pixbuf), affine, ART_FILTER_NEAREST, NULL); affine[4] -= x_offset; affine[5] -= y_offset; } /* shared code to highlight or dim the passed-in pixbuf */ static GdkPixbuf * map_pixbuf (NautilusIconCanvasItem *icon_item) { GnomeCanvas *canvas; char *audio_filename; GdkPixbuf *temp_pixbuf, *old_pixbuf, *audio_pixbuf; temp_pixbuf = icon_item->details->pixbuf; canvas = GNOME_CANVAS_ITEM(icon_item)->canvas; if (icon_item->details->is_prelit) { temp_pixbuf = nautilus_create_spotlight_pixbuf (icon_item->details->pixbuf); /* FIXME bugzilla.eazel.com 2471: This hard-wired image is inappropriate to * this level of code, which shouldn't know that the * preview is audio, nor should it have an icon * hard-wired in. */ /* if the icon is currently being previewed, superimpose an image to indicate that */ /* audio is the only kind of previewing right now, so this code isn't as general as it could be */ if (icon_item->details->is_active) { /* Load the audio symbol. */ audio_filename = nautilus_pixmap_file ("audio.png"); if (audio_filename != NULL) { audio_pixbuf = gdk_pixbuf_new_from_file (audio_filename); } else { audio_pixbuf = NULL; } /* Composite it onto the icon. */ if (audio_pixbuf != NULL) { gdk_pixbuf_composite (audio_pixbuf, temp_pixbuf, 0, 0, gdk_pixbuf_get_width (temp_pixbuf), gdk_pixbuf_get_height(temp_pixbuf), 0, 0, canvas->pixels_per_unit, canvas->pixels_per_unit, GDK_INTERP_BILINEAR, 0xFF); gdk_pixbuf_unref (audio_pixbuf); } g_free (audio_filename); } } if (icon_item->details->is_highlighted_for_selection || icon_item->details->is_highlighted_for_drop) { old_pixbuf = temp_pixbuf; temp_pixbuf = nautilus_create_darkened_pixbuf (temp_pixbuf, 0.8 * 255, 0.8 * 255); if (old_pixbuf != icon_item->details->pixbuf) { gdk_pixbuf_unref (old_pixbuf); } } return temp_pixbuf; } /* Draw the icon item for non-anti-aliased mode. */ static void nautilus_icon_canvas_item_draw (GnomeCanvasItem *item, GdkDrawable *drawable, int x, int y, int width, int height) { NautilusIconCanvasItem *icon_item; NautilusIconCanvasItemDetails *details; ArtIRect icon_rect, emblem_rect; EmblemLayout emblem_layout; GdkPixbuf *emblem_pixbuf, *temp_pixbuf; icon_item = NAUTILUS_ICON_CANVAS_ITEM (item); details = icon_item->details; /* Draw the pixbuf. */ if (details->pixbuf == NULL) { return; } /* Compute icon rectangle in drawable coordinates. */ get_icon_canvas_rectangle (icon_item, &icon_rect); icon_rect.x0 -= x; icon_rect.y0 -= y; icon_rect.x1 -= x; icon_rect.y1 -= y; /* if the pre-lit or selection flag is set, make a pre-lit or darkened pixbuf and draw that instead */ temp_pixbuf = map_pixbuf (icon_item); draw_pixbuf (temp_pixbuf, drawable, icon_rect.x0, icon_rect.y0); if (temp_pixbuf != details->pixbuf) { gdk_pixbuf_unref (temp_pixbuf); } /* Draw the emblem pixbufs. */ emblem_layout_reset (&emblem_layout, icon_item, &icon_rect); while (emblem_layout_next (&emblem_layout, &emblem_pixbuf, &emblem_rect)) { draw_pixbuf (emblem_pixbuf, drawable, emblem_rect.x0, emblem_rect.y0); } /* Draw stretching handles (if necessary). */ draw_stretch_handles (icon_item, drawable, &icon_rect); /* Draw the label text. */ draw_label_text (icon_item, drawable, icon_rect.x0, icon_rect.y1); } static void draw_dashed_rectangle_aa (guchar *pixels, int rowstride, gboolean has_alpha, int width, int height, int left, int top, int right, int bottom) { guchar red, green, blue, alpha, dash_color, dash_alpha; guint pixel_offset; int x, y, x1, y1, x2, y2; guchar *row_offset, *offset; int index, dash_width; dash_width = 1; pixel_offset = has_alpha ? 4 : 3; /* main color is black */ red = 0; green = 0; blue = 0; alpha = 255; /* dask color is white/transparent */ dash_color = 255; dash_alpha = 0; /* clip to the buffer bounds */ if (left < 0) x1 = 0; else x1 = left; if (top < 0) y1 = 0; else y1 = top; if (right < width) { x2 = right; } else { x2 = width - 1; } if (bottom < height) { y2 = bottom; } else { y2 = height - 1; } /* Draw top line */ if (top >= 0) { row_offset = pixels + y1 * rowstride; offset = row_offset + (x1 * pixel_offset); index = 0; for (x = x1; x < x2; x++) { if (index < dash_width) { *(offset++) = red; *(offset++) = green; *(offset++) = blue; } else { *(offset++) = dash_color; *(offset++) = dash_color; *(offset++) = dash_color; } if (has_alpha) { if (index < dash_width) { *(offset++) = alpha; } else { *(offset++) = dash_alpha; } } index++; if (index > dash_width) { index = 0; } } } /* Draw bottom line */ if (bottom < height) { row_offset = pixels + (y2 -1) * rowstride; offset = row_offset + (x1 * pixel_offset); index = 0; for (x = x1; x < x2; x++) { if (index < dash_width) { *(offset++) = red; *(offset++) = green; *(offset++) = blue; } else { *(offset++) = dash_color; *(offset++) = dash_color; *(offset++) = dash_color; } if (has_alpha) { if (index < dash_width) { *(offset++) = alpha; } else { *(offset++) = dash_alpha; } } index++; if (index > dash_width) { index = 0; } } } /* Draw left line */ row_offset = pixels + y1 * rowstride; index = 0; for (y = y1; y < y2; y++) { offset = row_offset + (x1 * pixel_offset); if (index < dash_width) { *(offset++) = red; *(offset++) = green; *(offset++) = blue; } else { *(offset++) = dash_color; *(offset++) = dash_color; *(offset++) = dash_color; } if (has_alpha) { if (index < dash_width) { *offset = alpha; } else { *offset = dash_alpha; } } row_offset += rowstride; index++; if (index > dash_width) { index = 0; } } /* Draw right line */ row_offset = pixels + y1 * rowstride; index = 0; for (y = y1; y < y2; y++) { offset = row_offset + ((x2 -1) * pixel_offset); if (index < dash_width) { *(offset++) = red; *(offset++) = green; *(offset++) = blue; } else { *(offset++) = dash_color; *(offset++) = dash_color; *(offset++) = dash_color; } if (has_alpha) { if (index < dash_width) { *offset = alpha; } else { *offset = dash_alpha; } } row_offset += rowstride; index++; if (index > dash_width) { index = 0; } } } static void draw_focus_rect (GdkPixbuf *pixbuf, int left, int top, int right, int bottom) { int rowstride, width, height; guchar *pixels; gboolean has_alpha; g_return_if_fail (pixbuf != NULL); pixels = gdk_pixbuf_get_pixels (pixbuf); width = gdk_pixbuf_get_width (pixbuf); height = gdk_pixbuf_get_height (pixbuf); rowstride = gdk_pixbuf_get_rowstride (pixbuf); has_alpha = gdk_pixbuf_get_has_alpha (pixbuf); draw_dashed_rectangle_aa (pixels, rowstride, has_alpha, width, height, left, top, right, bottom); } static void draw_or_measure_label_text_aa (NautilusIconCanvasItem *item, GdkPixbuf *destination_pixbuf, int icon_left, int icon_bottom) { NautilusIconCanvasItemDetails *details; int width_so_far, height_so_far; guint32 label_name_color; guint32 label_info_color; GnomeCanvasItem *canvas_item; int max_text_width; int icon_width, text_left, box_left; NautilusTextLayout *icon_text_layout; char **pieces; const char *text_piece; int i; char *combined_text; gboolean have_editable, have_additional, needs_highlight; details = item->details; needs_highlight = details->is_highlighted_for_selection || details->is_highlighted_for_drop; have_editable = details->editable_text != NULL && details->editable_text[0] != '\0'; have_additional = details->additional_text != NULL && details->additional_text[0] != '\0'; /* No font or no text, then do no work. */ if (!have_editable && !have_additional) { details->text_height = 0; details->text_width = 0; return; } /* Combine editable and additional text for processing */ combined_text = g_strconcat (have_editable ? details->editable_text : "", (have_editable && have_additional) ? "\n" : "", have_additional ? details->additional_text : "", NULL); width_so_far = 0; height_so_far = 0; canvas_item = GNOME_CANVAS_ITEM (item); if (destination_pixbuf == NULL ) { icon_width = 0; } else { icon_width = details->pixbuf == NULL ? 0 : gdk_pixbuf_get_width (details->pixbuf); } max_text_width = floor (nautilus_icon_canvas_item_get_max_text_width (item)); label_name_color = nautilus_icon_container_get_label_color (NAUTILUS_ICON_CONTAINER (canvas_item->canvas), TRUE); label_info_color = nautilus_icon_container_get_label_color (NAUTILUS_ICON_CONTAINER (canvas_item->canvas), FALSE); pieces = g_strsplit (combined_text, "\n", 0); for (i = 0; (text_piece = pieces[i]) != NULL; i++) { guint32 label_color; if (needs_highlight) { if (i == 0) { label_color = highlight_text_color; } else { label_color = highlight_text_info_color; } } else { if (i == 0) { label_color = label_name_color; } else { label_color = label_info_color; } } /* Replace empty string with space for measurement and drawing. * This makes empty lines appear, instead of being collapsed out. */ if (text_piece[0] == '\0') { text_piece = " "; } icon_text_layout = nautilus_text_layout_new (details->smooth_font, details->smooth_font_size, text_piece, LINE_BREAK_CHARACTERS, max_text_width, TRUE); /* Draw text if we are not in user rename mode */ if (destination_pixbuf != NULL && !details->is_renaming) { gboolean underlined; text_left = icon_left + (icon_width - icon_text_layout->width) / 2; /* if it's prelit, and we're in click-to-activate mode, underline the text */ underlined = (details->is_prelit && in_single_click_mode ()); /* draw the shadow in black */ if (needs_highlight) { icon_bottom += 3; /* leave some space for selection frame */ text_left -= 1; nautilus_text_layout_paint (icon_text_layout, destination_pixbuf, text_left + 2, icon_bottom + height_so_far + 1, GTK_JUSTIFY_CENTER, NAUTILUS_RGB_COLOR_BLACK, FALSE, underlined); } nautilus_text_layout_paint (icon_text_layout, destination_pixbuf, text_left, icon_bottom + height_so_far, GTK_JUSTIFY_CENTER, label_color, FALSE, underlined); /* if it's highlighted, embolden by drawing twice */ if (needs_highlight) { nautilus_text_layout_paint (icon_text_layout, destination_pixbuf, text_left + 1, icon_bottom + height_so_far, GTK_JUSTIFY_CENTER, label_color, FALSE, underlined); } } width_so_far = MAX (width_so_far, icon_text_layout->width); height_so_far += icon_text_layout->height; nautilus_text_layout_free (icon_text_layout); } g_strfreev (pieces); /* add some extra space for highlighting */ if (needs_highlight) { height_so_far += 8; /* extra slop for nicer highlighting */ width_so_far += 15; /* account for emboldening, plus extra to make it look nicer */ } if (destination_pixbuf != NULL) { /* Current calculations should match what we measured before drawing. * This assumes that we will always make a separate call to measure * before the call to draw. We might later decide to use this function * differently and change these asserts. */ g_assert (height_so_far == details->text_height); g_assert (width_so_far == details->text_width); box_left = icon_left + (icon_width - width_so_far) / 2; /* Indicate keyboard selection by framing the text with a gray-stippled rectangle */ if (details->is_highlighted_as_keyboard_focus) { draw_focus_rect (destination_pixbuf, 0, 0, width_so_far - 1, height_so_far - 1); } } else { /* If measuring, remember the width & height. */ details->text_width = width_so_far; details->text_height = height_so_far; } g_free (combined_text); } static void draw_label_text_aa (NautilusIconCanvasItem *icon_item, GnomeCanvasBuf *buf, double i2c[6], int x_delta) { GdkPixbuf *text_pixbuf; NautilusIconContainer *container; gboolean needs_highlight; gboolean have_editable; gboolean have_additional; /* make sure this is really necessary */ have_editable = icon_item->details->editable_text != NULL && icon_item->details->editable_text[0] != '\0'; have_additional = icon_item->details->additional_text != NULL && icon_item->details->additional_text[0] != '\0'; /* No font or no text, then do no work. */ if (icon_item->details->smooth_font == NULL || (!have_editable && !have_additional)) { icon_item->details->text_height = 0; icon_item->details->text_width = 0; return; } if (icon_item->details->is_renaming) { /* FIXME bugzilla.eazel.com 2472: * Why is it OK to leave text_height and * text_width alone in this code path? */ return; } /* Set up the background. */ needs_highlight = icon_item->details->is_highlighted_for_selection || icon_item->details->is_highlighted_for_drop; if (needs_highlight) { container = NAUTILUS_ICON_CONTAINER (GNOME_CANVAS_ITEM (icon_item)->canvas); text_pixbuf = nautilus_stretch_frame_image (container->details->highlight_frame, 9, 8, 9, 8, icon_item->details->text_width, icon_item->details->text_height, TRUE); } else { text_pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, icon_item->details->text_width, icon_item->details->text_height); nautilus_gdk_pixbuf_fill_rectangle_with_color (text_pixbuf, NULL, NAUTILUS_RGBA_COLOR_PACK (0, 0, 0, 0)); } draw_or_measure_label_text_aa (icon_item, text_pixbuf, x_delta, 0); /* Draw the pixbuf containing the label. */ i2c[4] -= x_delta; draw_pixbuf_aa (text_pixbuf, buf, i2c, 0, LABEL_OFFSET); i2c[4] += x_delta; gdk_pixbuf_unref (text_pixbuf); } /* draw the item for anti-aliased mode */ static void nautilus_icon_canvas_item_render (GnomeCanvasItem *item, GnomeCanvasBuf *buf) { ArtIRect icon_rect, emblem_rect; EmblemLayout emblem_layout; GdkPixbuf *emblem_pixbuf, *temp_pixbuf; NautilusIconCanvasItem *icon_item; double i2c[6]; int x_delta; icon_item = NAUTILUS_ICON_CANVAS_ITEM (item); /* map the pixbuf for selection or other effects */ temp_pixbuf = map_pixbuf (icon_item); /* Compute the affine transform, but force the scale to 1.0 * because the icon factory does the scaling for us. */ gnome_canvas_item_i2c_affine (item, i2c); i2c[0] = 1.0; i2c[3] = 1.0; /* force it to integer pixel boundaries to avoid losing some of the left edge */ i2c[4] = floor (i2c[4]); i2c[5] = floor (i2c[5]); if (buf->is_bg) { gnome_canvas_buf_ensure_buf (buf); buf->is_bg = FALSE; } /* draw the icon */ draw_pixbuf_aa (temp_pixbuf, buf, i2c, 0, 0); if (temp_pixbuf != icon_item->details->pixbuf) { gdk_pixbuf_unref (temp_pixbuf); } /* draw the emblems */ get_icon_canvas_rectangle (icon_item, &icon_rect); emblem_layout_reset (&emblem_layout, icon_item, &icon_rect); while (emblem_layout_next (&emblem_layout, &emblem_pixbuf, &emblem_rect)) { draw_pixbuf_aa (emblem_pixbuf, buf, i2c, emblem_rect.x0 - icon_rect.x0, emblem_rect.y0 - icon_rect.y0); } /* draw the stretch handles */ draw_stretch_handles_aa (icon_item, buf, &icon_rect); /* draw the text */ i2c[5] += icon_rect.y1 - icon_rect.y0; x_delta = (icon_item->details->text_width - (icon_rect.x1 - icon_rect.x0)) / 2; draw_label_text_aa (icon_item, buf, i2c, x_delta); } /* handle events */ static int nautilus_icon_canvas_item_event (GnomeCanvasItem *item, GdkEvent *event) { NautilusIconCanvasItem *icon_item; icon_item = NAUTILUS_ICON_CANVAS_ITEM (item); switch (event->type) { case GDK_ENTER_NOTIFY: if (!icon_item->details->is_prelit) { icon_item->details->is_prelit = TRUE; gnome_canvas_item_request_update (item); /* FIXME bugzilla.eazel.com 2473: * We should emit our own signal here, * not one from the container; it could hook * up to that signal and emit one of its * own. Doing it this way hard-codes what * "user_data" is. Also, the two signals * should be separate. The "unpreview" signal * does not have a return value. */ icon_item->details->is_active = nautilus_icon_container_emit_preview_signal (NAUTILUS_ICON_CONTAINER (item->canvas), NAUTILUS_ICON_CANVAS_ITEM (item)->user_data, TRUE); } return TRUE; case GDK_LEAVE_NOTIFY: if (icon_item->details->is_prelit || icon_item->details->is_highlighted_for_drop) { /* When leaving, turn of the prelight state and the * higlighted for drop. The latter gets turned on * by the drag&drop motion callback. */ /* FIXME bugzilla.eazel.com 2473: * We should emit our own signal here, * not one from the containe; it could hook up * to that signal and emit one of its * ownr. Doing it this way hard-codes what * "user_data" is. Also, the two signals * should be separate. The "unpreview" signal * does not have a return value. */ nautilus_icon_container_emit_preview_signal (NAUTILUS_ICON_CONTAINER (item->canvas), NAUTILUS_ICON_CANVAS_ITEM (item)->user_data, FALSE); icon_item->details->is_prelit = FALSE; icon_item->details->is_active = 0; icon_item->details->is_highlighted_for_drop = FALSE; gnome_canvas_item_request_update (item); } return TRUE; default: /* Don't eat up other events; icon container might use them. */ return FALSE; } } static void compute_text_rectangle (NautilusIconCanvasItem *item, const ArtIRect *icon_rect, ArtIRect *text_rect) { /* Compute text rectangle. */ text_rect->x0 = (icon_rect->x0 + icon_rect->x1) / 2 - item->details->text_width / 2; text_rect->y0 = icon_rect->y1 + LABEL_OFFSET; text_rect->x1 = text_rect->x0 + item->details->text_width; text_rect->y1 = text_rect->y0 + item->details->text_height; } static gboolean hit_test_pixbuf (GdkPixbuf *pixbuf, const ArtIRect *pixbuf_location, const ArtIRect *probe_rect) { ArtIRect relative_rect, pixbuf_rect; int x, y; guint8 *pixel; /* You can get here without a pixbuf in some strange cases. */ if (pixbuf == NULL) { return FALSE; } /* Check to see if it's within the rectangle at all. */ relative_rect.x0 = probe_rect->x0 - pixbuf_location->x0; relative_rect.y0 = probe_rect->y0 - pixbuf_location->y0; relative_rect.x1 = probe_rect->x1 - pixbuf_location->x0; relative_rect.y1 = probe_rect->y1 - pixbuf_location->y0; pixbuf_rect.x0 = 0; pixbuf_rect.y0 = 0; pixbuf_rect.x1 = gdk_pixbuf_get_width (pixbuf); pixbuf_rect.y1 = gdk_pixbuf_get_height (pixbuf); art_irect_intersect (&relative_rect, &relative_rect, &pixbuf_rect); if (art_irect_empty (&relative_rect)) { return FALSE; } /* If there's no alpha channel, it's opaque and we have a hit. */ if (!gdk_pixbuf_get_has_alpha (pixbuf)) { return TRUE; } g_assert (gdk_pixbuf_get_n_channels (pixbuf) == 4); /* Check the alpha channel of the pixel to see if we have a hit. */ for (x = relative_rect.x0; x < relative_rect.x1; x++) { for (y = relative_rect.y0; y < relative_rect.y1; y++) { pixel = gdk_pixbuf_get_pixels (pixbuf) + y * gdk_pixbuf_get_rowstride (pixbuf) + x * 4; if (pixel[3] >= 128) { return TRUE; } } } return FALSE; } static gboolean hit_test (NautilusIconCanvasItem *icon_item, const ArtIRect *canvas_rect) { NautilusIconCanvasItemDetails *details; ArtIRect icon_rect, text_rect, emblem_rect; EmblemLayout emblem_layout; GdkPixbuf *emblem_pixbuf; details = icon_item->details; /* Check for hits in the stretch handles. */ if (hit_test_stretch_handle (icon_item, canvas_rect)) { return TRUE; } /* Check for hit in the icon. */ get_icon_canvas_rectangle (icon_item, &icon_rect); if (hit_test_pixbuf (details->pixbuf, &icon_rect, canvas_rect)) { return TRUE; } /* Check for hit in the text. */ compute_text_rectangle (icon_item, &icon_rect, &text_rect); if (nautilus_art_irect_hits_irect (&text_rect, canvas_rect) && !icon_item->details->is_renaming) { return TRUE; } /* Check for hit in the emblem pixbufs. */ emblem_layout_reset (&emblem_layout, icon_item, &icon_rect); while (emblem_layout_next (&emblem_layout, &emblem_pixbuf, &emblem_rect)) { if (hit_test_pixbuf (emblem_pixbuf, &emblem_rect, canvas_rect)) { return TRUE; } } return FALSE; } /* Point handler for the icon canvas item. */ static double nautilus_icon_canvas_item_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item) { ArtIRect canvas_rect; *actual_item = item; canvas_rect.x0 = cx; canvas_rect.y0 = cy; canvas_rect.x1 = cx + 1; canvas_rect.y1 = cy + 1; if (hit_test (NAUTILUS_ICON_CANVAS_ITEM (item), &canvas_rect)) { return 0.0; } else { /* This value means not hit. * It's kind of arbitrary. Can we do better? */ return item->canvas->pixels_per_unit * 2 + 10; } } /* Bounds handler for the icon canvas item. */ static void nautilus_icon_canvas_item_bounds (GnomeCanvasItem *item, double *x1, double *y1, double *x2, double *y2) { NautilusIconCanvasItem *icon_item; NautilusIconCanvasItemDetails *details; ArtIRect icon_rect, text_rect, total_rect, emblem_rect; double pixels_per_unit; EmblemLayout emblem_layout; GdkPixbuf *emblem_pixbuf; g_assert (x1 != NULL); g_assert (y1 != NULL); g_assert (x2 != NULL); g_assert (y2 != NULL); icon_item = NAUTILUS_ICON_CANVAS_ITEM (item); details = icon_item->details; measure_label_text (icon_item); /* Compute icon rectangle. */ icon_rect.x0 = 0; icon_rect.y0 = 0; if (details->pixbuf == NULL) { icon_rect.x1 = 0; icon_rect.y1 = 0; } else { icon_rect.x1 = gdk_pixbuf_get_width (details->pixbuf); icon_rect.y1 = gdk_pixbuf_get_height (details->pixbuf); } /* Compute text rectangle. */ compute_text_rectangle (icon_item, &icon_rect, &text_rect); /* Compute total rectangle, adding in emblem rectangles. */ art_irect_union (&total_rect, &icon_rect, &text_rect); emblem_layout_reset (&emblem_layout, icon_item, &icon_rect); while (emblem_layout_next (&emblem_layout, &emblem_pixbuf, &emblem_rect)) { art_irect_union (&total_rect, &total_rect, &emblem_rect); } /* Return the result. */ pixels_per_unit = item->canvas->pixels_per_unit; *x1 = total_rect.x0 / pixels_per_unit; *y1 = total_rect.y0 / pixels_per_unit; *x2 = total_rect.x1 / pixels_per_unit; *y2 = total_rect.y1 / pixels_per_unit; } /* Get the rectangle of the icon only, in world coordinates. */ void nautilus_icon_canvas_item_get_icon_rectangle (NautilusIconCanvasItem *item, ArtDRect *rect) { double i2w[6]; ArtPoint art_point; double pixels_per_unit; GdkPixbuf *pixbuf; g_return_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (item)); g_return_if_fail (rect != NULL); gnome_canvas_item_i2w_affine (GNOME_CANVAS_ITEM (item), i2w); art_point.x = 0; art_point.y = 0; art_affine_point (&art_point, &art_point, i2w); rect->x0 = art_point.x; rect->y0 = art_point.y; pixbuf = item->details->pixbuf; pixels_per_unit = GNOME_CANVAS_ITEM (item)->canvas->pixels_per_unit; rect->x1 = rect->x0 + (pixbuf == NULL ? 0 : gdk_pixbuf_get_width (pixbuf)) / pixels_per_unit; rect->y1 = rect->y0 + (pixbuf == NULL ? 0 : gdk_pixbuf_get_height (pixbuf)) / pixels_per_unit; } /* Get the rectangle of the icon only, in canvas coordinates. */ void get_icon_canvas_rectangle (NautilusIconCanvasItem *item, ArtIRect *rect) { double i2c[6]; ArtPoint art_point; GdkPixbuf *pixbuf; g_return_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (item)); g_return_if_fail (rect != NULL); gnome_canvas_item_i2c_affine (GNOME_CANVAS_ITEM (item), i2c); art_point.x = 0; art_point.y = 0; art_affine_point (&art_point, &art_point, i2c); rect->x0 = floor (art_point.x); rect->y0 = floor (art_point.y); pixbuf = item->details->pixbuf; rect->x1 = rect->x0 + (pixbuf == NULL ? 0 : gdk_pixbuf_get_width (pixbuf)); rect->y1 = rect->y0 + (pixbuf == NULL ? 0 : gdk_pixbuf_get_height (pixbuf)); } void nautilus_icon_canvas_item_set_show_stretch_handles (NautilusIconCanvasItem *item, gboolean show_stretch_handles) { g_return_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (item)); g_return_if_fail (show_stretch_handles == FALSE || show_stretch_handles == TRUE); if (!item->details->show_stretch_handles == !show_stretch_handles) { return; } item->details->show_stretch_handles = show_stretch_handles; gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (item)); } /* Check whether the item is in smooth mode */ static gboolean icon_canvas_item_is_smooth (const NautilusIconCanvasItem *icon_item) { GnomeCanvas *parent_canvas; g_return_val_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (icon_item), FALSE); parent_canvas = GNOME_CANVAS (GNOME_CANVAS_ITEM (icon_item)->canvas); return parent_canvas->aa; } /* Check if one of the stretch handles was hit. */ static gboolean hit_test_stretch_handle (NautilusIconCanvasItem *item, const ArtIRect *probe_canvas_rect) { ArtIRect icon_rect; char *knob_filename; GdkPixbuf *knob_pixbuf; int knob_width, knob_height; g_return_val_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (item), FALSE); /* Make sure there are handles to hit. */ if (!item->details->show_stretch_handles) { return FALSE; } /* Quick check to see if the rect hits the icon at all. */ get_icon_canvas_rectangle (item, &icon_rect); if (!nautilus_art_irect_hits_irect (probe_canvas_rect, &icon_rect)) { return FALSE; } knob_filename = nautilus_theme_get_image_path ("knob.png"); knob_pixbuf = gdk_pixbuf_new_from_file (knob_filename); knob_width = gdk_pixbuf_get_width (knob_pixbuf); knob_height = gdk_pixbuf_get_height (knob_pixbuf); g_free(knob_filename); gdk_pixbuf_unref(knob_pixbuf); /* Check for hits in the stretch handles. */ return (probe_canvas_rect->x0 < icon_rect.x0 + knob_width || probe_canvas_rect->x1 >= icon_rect.x1 - knob_width) && (probe_canvas_rect->y0 < icon_rect.y0 + knob_height || probe_canvas_rect->y1 >= icon_rect.y1 - knob_height); } gboolean nautilus_icon_canvas_item_hit_test_stretch_handles (NautilusIconCanvasItem *item, const ArtPoint *world_point) { ArtIRect canvas_rect; g_return_val_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (item), FALSE); g_return_val_if_fail (world_point != NULL, FALSE); gnome_canvas_w2c (GNOME_CANVAS_ITEM (item)->canvas, world_point->x, world_point->y, &canvas_rect.x0, &canvas_rect.y0); canvas_rect.x1 = canvas_rect.x0 + 1; canvas_rect.y1 = canvas_rect.y0 + 1; return hit_test_stretch_handle (item, &canvas_rect); } gboolean nautilus_icon_canvas_item_hit_test_rectangle (NautilusIconCanvasItem *item, const ArtDRect *world_rect) { ArtIRect canvas_rect; g_return_val_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (item), FALSE); g_return_val_if_fail (world_rect != NULL, FALSE); nautilus_gnome_canvas_world_to_canvas_rectangle (GNOME_CANVAS_ITEM (item)->canvas, world_rect, &canvas_rect); return hit_test (item, &canvas_rect); } const char * nautilus_icon_canvas_item_get_editable_text (NautilusIconCanvasItem *icon_item) { g_return_val_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (icon_item), NULL); return icon_item->details->editable_text; } void nautilus_icon_canvas_item_set_renaming (NautilusIconCanvasItem *item, gboolean state) { g_return_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (item)); g_return_if_fail (state == FALSE || state == TRUE); if (item->details->is_renaming == state) { return; } item->details->is_renaming = state; gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (item)); } double nautilus_icon_canvas_item_get_max_text_width (NautilusIconCanvasItem *item) { GnomeCanvasItem *canvas_item; canvas_item = GNOME_CANVAS_ITEM (item); if (nautilus_icon_container_is_tighter_layout (NAUTILUS_ICON_CONTAINER (canvas_item->canvas))) { return MAX_TEXT_WIDTH_TIGHTER * canvas_item->canvas->pixels_per_unit; } else { return MAX_TEXT_WIDTH_STANDARD * canvas_item->canvas->pixels_per_unit; } } void nautilus_icon_canvas_item_set_smooth_font (NautilusIconCanvasItem *icon_item, NautilusScalableFont *font) { g_return_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (icon_item)); g_return_if_fail (NAUTILUS_IS_SCALABLE_FONT (font)); gtk_object_unref (GTK_OBJECT (icon_item->details->smooth_font)); gtk_object_ref (GTK_OBJECT (font)); icon_item->details->smooth_font = font; /* Only need to update if in smooth mode */ if (icon_canvas_item_is_smooth (icon_item)) { gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (icon_item)); } } void nautilus_icon_canvas_item_set_smooth_font_size (NautilusIconCanvasItem *icon_item, guint font_size) { g_return_if_fail (NAUTILUS_IS_ICON_CANVAS_ITEM (icon_item)); g_return_if_fail (font_size > 0); if (icon_item->details->smooth_font_size == font_size) { return; } icon_item->details->smooth_font_size = font_size; /* Only need to update if in smooth mode */ if (icon_canvas_item_is_smooth (icon_item)) { gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (icon_item)); } }