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/* gnome-canvas-container-private.h
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,
see <http://www.gnu.org/licenses/>.
Author: Ettore Perazzoli <ettore@gnu.org>
*/
#ifndef NAUTILUS_CANVAS_CONTAINER_PRIVATE_H
#define NAUTILUS_CANVAS_CONTAINER_PRIVATE_H
#include <eel/eel-glib-extensions.h>
#include "nautilus-canvas-item.h"
#include "nautilus-canvas-container.h"
#include "nautilus-canvas-dnd.h"
/* An Icon. */
typedef struct {
/* Object represented by this icon. */
NautilusCanvasIconData *data;
/* Canvas item for the icon. */
NautilusCanvasItem *item;
/* X/Y coordinates. */
double x, y;
/*
* In RTL mode x is RTL x position, we use saved_ltr_x for
* keeping track of x value before it gets converted into
* RTL value, this is used for saving the icon position
* to the nautilus metafile.
*/
double saved_ltr_x;
/* Scale factor (stretches icon). */
double scale;
/* Position in the view */
int position;
/* Whether this item is selected. */
eel_boolean_bit is_selected : 1;
/* Whether this item was selected before rubberbanding. */
eel_boolean_bit was_selected_before_rubberband : 1;
/* Whether this item is visible in the view. */
eel_boolean_bit is_visible : 1;
eel_boolean_bit has_lazy_position : 1;
} NautilusCanvasIcon;
/* Private NautilusCanvasContainer members. */
typedef struct {
gboolean active;
double start_x, start_y;
EelCanvasItem *selection_rectangle;
guint timer_id;
guint prev_x, prev_y;
int last_adj_x;
int last_adj_y;
} NautilusCanvasRubberbandInfo;
typedef enum {
DRAG_STATE_INITIAL,
DRAG_STATE_MOVE_OR_COPY,
DRAG_STATE_STRETCH
} DragState;
typedef struct {
/* Pointer position in canvas coordinates. */
int pointer_x, pointer_y;
/* Icon top, left, and size in canvas coordinates. */
int icon_x, icon_y;
guint icon_size;
} StretchState;
typedef enum {
AXIS_NONE,
AXIS_HORIZONTAL,
AXIS_VERTICAL
} Axis;
enum {
LABEL_COLOR,
LABEL_COLOR_HIGHLIGHT,
LABEL_COLOR_ACTIVE,
LABEL_COLOR_PRELIGHT,
LABEL_INFO_COLOR,
LABEL_INFO_COLOR_HIGHLIGHT,
LABEL_INFO_COLOR_ACTIVE,
LAST_LABEL_COLOR
};
struct NautilusCanvasContainerDetails {
/* List of icons. */
GList *icons;
GList *new_icons;
GList *selection;
GHashTable *icon_set;
/* Currently focused icon for accessibility. */
NautilusCanvasIcon *focus;
gboolean keyboard_focus;
/* Starting icon for keyboard rubberbanding. */
NautilusCanvasIcon *keyboard_rubberband_start;
/* Current icon with stretch handles, so we have only one. */
NautilusCanvasIcon *stretch_icon;
double stretch_initial_x, stretch_initial_y;
guint stretch_initial_size;
/* Last highlighted drop target. */
NautilusCanvasIcon *drop_target;
/* Rubberbanding status. */
NautilusCanvasRubberbandInfo rubberband_info;
/* Timeout used to make a selected icon fully visible after a short
* period of time. (The timeout is needed to make sure
* double-clicking still works.)
*/
guint keyboard_icon_reveal_timer_id;
NautilusCanvasIcon *keyboard_icon_to_reveal;
/* Used to coalesce selection changed signals in some cases */
guint selection_changed_id;
/* If a request is made to reveal an unpositioned icon we remember
* it and reveal it once it gets positioned (in relayout).
*/
NautilusCanvasIcon *pending_icon_to_reveal;
/* Remembered information about the start of the current event. */
guint32 button_down_time;
/* Drag state. Valid only if drag_button is non-zero. */
guint drag_button;
NautilusCanvasIcon *drag_icon;
int drag_x, drag_y;
DragState drag_state;
gboolean drag_started;
StretchState stretch_start;
gboolean icon_selected_on_button_down;
gboolean double_clicked;
NautilusCanvasIcon *double_click_icon[2]; /* Both clicks in a double click need to be on the same icon */
guint double_click_button[2];
NautilusCanvasIcon *range_selection_base_icon;
/* Idle ID. */
guint idle_id;
/* Idle handler for stretch code */
guint stretch_idle_id;
/* Align idle id */
guint align_idle_id;
/* DnD info. */
NautilusCanvasDndInfo *dnd_info;
NautilusDragInfo *dnd_source_info;
/* zoom level */
int zoom_level;
/* specific fonts used to draw labels */
char *font;
/* State used so arrow keys don't wander if icons aren't lined up.
*/
int arrow_key_start_x;
int arrow_key_start_y;
GtkDirectionType arrow_key_direction;
/* Mode settings. */
gboolean single_click_mode;
gboolean auto_layout;
/* Should the container keep icons aligned to a grid */
gboolean keep_aligned;
/* Set to TRUE after first allocation has been done */
gboolean has_been_allocated;
int size_allocation_count;
guint size_allocation_count_id;
/* Is the container fixed or resizable */
gboolean is_fixed_size;
/* Is the container for a desktop window */
gboolean is_desktop;
/* Ignore the visible area the next time the scroll region is recomputed */
gboolean reset_scroll_region_trigger;
/* The position we are scaling to on stretch */
double world_x;
double world_y;
/* margins to follow, used for the desktop panel avoidance */
int left_margin;
int right_margin;
int top_margin;
int bottom_margin;
/* a11y items used by canvas items */
guint a11y_item_action_idle_handler;
GQueue* a11y_item_action_queue;
eel_boolean_bit is_loading : 1;
eel_boolean_bit needs_resort : 1;
eel_boolean_bit selection_needs_resort : 1;
eel_boolean_bit store_layout_timestamps : 1;
eel_boolean_bit store_layout_timestamps_when_finishing_new_icons : 1;
time_t layout_timestamp;
};
/* Private functions shared by mutiple files. */
NautilusCanvasIcon *nautilus_canvas_container_get_icon_by_uri (NautilusCanvasContainer *container,
const char *uri);
void nautilus_canvas_container_move_icon (NautilusCanvasContainer *container,
NautilusCanvasIcon *icon,
int x,
int y,
double scale,
gboolean raise,
gboolean snap,
gboolean update_position);
void nautilus_canvas_container_select_list_unselect_others (NautilusCanvasContainer *container,
GList *icons);
char * nautilus_canvas_container_get_icon_uri (NautilusCanvasContainer *container,
NautilusCanvasIcon *canvas);
char * nautilus_canvas_container_get_icon_activation_uri (NautilusCanvasContainer *container,
NautilusCanvasIcon *canvas);
char * nautilus_canvas_container_get_icon_drop_target_uri (NautilusCanvasContainer *container,
NautilusCanvasIcon *canvas);
void nautilus_canvas_container_update_icon (NautilusCanvasContainer *container,
NautilusCanvasIcon *canvas);
gboolean nautilus_canvas_container_scroll (NautilusCanvasContainer *container,
int delta_x,
int delta_y);
void nautilus_canvas_container_update_scroll_region (NautilusCanvasContainer *container);
#endif /* NAUTILUS_CANVAS_CONTAINER_PRIVATE_H */
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