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cee3baea0fb469c86b7c6ca943c00a73ee10c551
gimp/app/display/gimpdisplayshell-callbacks.c
Michael Natterer cee3baea0f First draft of the "no image open" window, which is implemented as a 
2008-03-18  Michael Natterer  <mitch@gimp.org>

	First draft of the "no image open" window, which is implemented as
	a display without image (a view with NULL model). Didn't change
	the display's appearance yet so I can first make sure the display
	without image works properly in all details before hiding these
	details.

	* app/core/gimp-gui.[ch]: add "gimp" parameter to display_create()
	and allow "image" to be NULL.

	* app/core/gimpcontext.c (gimp_context_real_set_display): a
	display's image can be NULL now.

	* app/display/gimpdisplay.[ch]: add Gimp and GimpDisplayConfig
	members.  Add Gimp parameter to gimp_display_shell_new(). Changed
	gimp_display_reconnect() to gimp_display_set_image() and allow to
	set a NULL image.

	* app/gui/gui-vtable.c (gui_display_create): if there is a single
	display without an image, call gimp_display_set_image() on that
	display instead of creating a new one.

	* app/display/gimpdisplayshell-close.c: if the last display is
	closed, don't close it but make it empty. Factored out that code
	to gimp_display_shell_really_close().

	* app/display/gimpdisplayshell-dnd.c: when dropping uris on an
	empty display, open the first one into that display and the other
	ones as layers of the newly opened image. This is consistent with
	dropping on an existing image but maybe needs some discussion.

	* app/display/gimpdisplayshell-callbacks.c: bail out early in the
	tool event callback so tools never have to deal with empty
	displays. In expose(), draw the drop zone on the empty display.

	* app/display/gimpdisplayshell-title.c: set the empty display's
	title to "Gimp - Drop Files".

	* app/display/gimpdisplay-foreach.c
	* app/display/gimpdisplay-handlers.c
	* app/display/gimpdisplayshell-appearance.c
	* app/display/gimpdisplayshell-autoscroll.c
	* app/display/gimpdisplayshell-callbacks.c
	* app/display/gimpdisplayshell-cursor.c
	* app/display/gimpdisplayshell-dnd.c
	* app/display/gimpdisplayshell-draw.c
	* app/display/gimpdisplayshell-filter-dialog.c
	* app/display/gimpdisplayshell-handlers.c
	* app/display/gimpdisplayshell-layer-select.c
	* app/display/gimpdisplayshell-preview.c
	* app/display/gimpdisplayshell-render.c
	* app/display/gimpdisplayshell-scale.c
	* app/display/gimpdisplayshell-scroll.c
	* app/display/gimpdisplayshell-selection.c
	* app/display/gimpdisplayshell-title.c
	* app/display/gimpdisplayshell.c
	* app/display/gimpnavigationeditor.c
	* app/display/gimpstatusbar.c: use display->gimp and
	display->config instead of going via the image. Guard against
	empty displays in some few places (most places can't be
	called). Where needed, use the canvas' dimensions instead of the
	image's dimensions so scroll offsets and scrollbars still have
	sane values instead of the last image's ones.

	* app/actions/actions.c (action_data_get_gimp)
	(action_data_get_context): use display->gimp instead of
	display->image->gimp.

	* app/actions/edit-commands.c (edit_paste_cmd_callback): redirect
	to "paste as new" if there is an empty display.

	* app/actions/tools-commands.c (tools_select_cmd_callback): don't
	initialize the new tool on an empty display.

	* app/actions/view-actions.c (view_actions_update): changed lots
	of sensitivity settings to be insensitive when there is no image
	(instead of no display).

	* app/actions/view-commands.c: use the display's config object
	instead of gimp's.


svn path=/trunk/; revision=25113
2008-03-18 21:22:21 +00:00

1829 lines
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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdlib.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpcolor/gimpcolor.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "display-types.h"
#include "tools/tools-types.h"
#include "config/gimpdisplayconfig.h"
#include "core/gimp.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "core/gimpimage-guides.h"
#include "core/gimpimage-sample-points.h"
#include "core/gimpimage-quick-mask.h"
#include "core/gimplayer.h"
#include "core/gimptoolinfo.h"
#include "tools/gimpimagemaptool.h"
#include "tools/gimpmovetool.h"
#include "tools/gimppainttool.h"
#include "tools/gimptoolcontrol.h"
#include "tools/tool_manager.h"
#include "widgets/gimpactiongroup.h"
#include "widgets/gimpcontrollers.h"
#include "widgets/gimpcontrollerkeyboard.h"
#include "widgets/gimpcontrollerwheel.h"
#include "widgets/gimpcursor.h"
#include "widgets/gimpdevices.h"
#include "widgets/gimpdialogfactory.h"
#include "widgets/gimpuimanager.h"
#include "widgets/gimpwidgets-utils.h"
#include "gimpcanvas.h"
#include "gimpdisplay.h"
#include "gimpdisplayoptions.h"
#include "gimpdisplayshell.h"
#include "gimpdisplayshell-appearance.h"
#include "gimpdisplayshell-autoscroll.h"
#include "gimpdisplayshell-callbacks.h"
#include "gimpdisplayshell-coords.h"
#include "gimpdisplayshell-cursor.h"
#include "gimpdisplayshell-draw.h"
#include "gimpdisplayshell-layer-select.h"
#include "gimpdisplayshell-preview.h"
#include "gimpdisplayshell-scale.h"
#include "gimpdisplayshell-scroll.h"
#include "gimpdisplayshell-selection.h"
#include "gimpdisplayshell-title.h"
#include "gimpdisplayshell-transform.h"
#include "gimpnavigationeditor.h"
#include "gimp-log.h"
#include "gimp-intl.h"
#define DEFAULT_EVENT_SMOOTHING 0.98
#define DEFAULT_EVENT_FILTER 0.5
/* local function prototypes */
static void gimp_display_shell_vscrollbar_update (GtkAdjustment *adjustment,
GimpDisplayShell *shell);
static void gimp_display_shell_hscrollbar_update (GtkAdjustment *adjustment,
GimpDisplayShell *shell);
static GdkModifierType
gimp_display_shell_key_to_state (gint key);
static GdkEvent * gimp_display_shell_compress_motion (GimpDisplayShell *shell);
/* public functions */
gboolean
gimp_display_shell_events (GtkWidget *widget,
GdkEvent *event,
GimpDisplayShell *shell)
{
Gimp *gimp;
gboolean set_display = FALSE;
/* are we in destruction? */
if (! shell->display || ! shell->display->shell)
return TRUE;
gimp = shell->display->gimp;
switch (event->type)
{
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
{
GdkEventKey *kevent = (GdkEventKey *) event;
if (gimp->busy)
return TRUE;
/* do not process any key events while BUTTON1 is down. We do this
* so tools keep the modifier state they were in when BUTTON1 was
* pressed and to prevent accelerators from being invoked.
*/
if (kevent->state & GDK_BUTTON1_MASK)
{
if (kevent->keyval == GDK_Shift_L ||
kevent->keyval == GDK_Shift_R ||
kevent->keyval == GDK_Control_L ||
kevent->keyval == GDK_Control_R ||
kevent->keyval == GDK_Alt_L ||
kevent->keyval == GDK_Alt_R)
{
break;
}
if (event->type == GDK_KEY_PRESS)
{
if ((kevent->keyval == GDK_space ||
kevent->keyval == GDK_KP_Space) && shell->space_release_pending)
{
shell->space_pressed = TRUE;
shell->space_release_pending = FALSE;
}
}
else
{
if ((kevent->keyval == GDK_space ||
kevent->keyval == GDK_KP_Space) && shell->space_pressed)
{
shell->space_pressed = FALSE;
shell->space_release_pending = TRUE;
}
}
return TRUE;
}
switch (kevent->keyval)
{
case GDK_Left: case GDK_Right:
case GDK_Up: case GDK_Down:
case GDK_space:
case GDK_KP_Space:
case GDK_Tab:
case GDK_ISO_Left_Tab:
case GDK_Alt_L: case GDK_Alt_R:
case GDK_Shift_L: case GDK_Shift_R:
case GDK_Control_L: case GDK_Control_R:
case GDK_Return:
case GDK_KP_Enter:
case GDK_ISO_Enter:
case GDK_BackSpace: case GDK_Delete:
break;
case GDK_Escape:
if (event->type == GDK_KEY_PRESS)
gimp_display_shell_set_fullscreen (shell, FALSE);
break;
default:
if (shell->space_pressed)
return TRUE;
break;
}
set_display = TRUE;
break;
}
case GDK_BUTTON_PRESS:
case GDK_SCROLL:
set_display = TRUE;
break;
case GDK_FOCUS_CHANGE:
{
GdkEventFocus *fevent = (GdkEventFocus *) event;
if (fevent->in && shell->display->config->activate_on_focus)
set_display = TRUE;
}
break;
case GDK_WINDOW_STATE:
{
GdkEventWindowState *sevent = (GdkEventWindowState *) event;
GimpDisplayOptions *options;
gboolean fullscreen;
GimpActionGroup *group;
shell->window_state = sevent->new_window_state;
if (! (sevent->changed_mask & GDK_WINDOW_STATE_FULLSCREEN))
break;
fullscreen = gimp_display_shell_get_fullscreen (shell);
gtk_widget_set_name (GTK_WIDGET (shell->menubar),
fullscreen ? "gimp-menubar-fullscreen" : NULL);
options = fullscreen ? shell->fullscreen_options : shell->options;
gimp_display_shell_set_show_menubar (shell,
options->show_menubar);
gimp_display_shell_set_show_rulers (shell,
options->show_rulers);
gimp_display_shell_set_show_scrollbars (shell,
options->show_scrollbars);
gimp_display_shell_set_show_statusbar (shell,
options->show_statusbar);
gimp_display_shell_set_show_selection (shell,
options->show_selection);
gimp_display_shell_set_show_layer (shell,
options->show_layer_boundary);
gimp_display_shell_set_show_guides (shell,
options->show_guides);
gimp_display_shell_set_show_grid (shell,
options->show_grid);
gimp_display_shell_set_show_sample_points (shell,
options->show_sample_points);
gimp_display_shell_set_padding (shell,
options->padding_mode,
&options->padding_color);
group = gimp_ui_manager_get_action_group (shell->menubar_manager,
"view");
gimp_action_group_set_action_active (group, "view-fullscreen",
fullscreen);
if (shell->display ==
gimp_context_get_display (gimp_get_user_context (gimp)))
{
group = gimp_ui_manager_get_action_group (shell->popup_manager,
"view");
gimp_action_group_set_action_active (group, "view-fullscreen",
fullscreen);
}
}
break;
default:
break;
}
/* Setting the context's display automatically sets the image, too */
if (set_display)
gimp_context_set_display (gimp_get_user_context (gimp), shell->display);
return FALSE;
}
void
gimp_display_shell_canvas_realize (GtkWidget *canvas,
GimpDisplayShell *shell)
{
GimpCanvasPaddingMode padding_mode;
GimpRGB padding_color;
gtk_widget_grab_focus (shell->canvas);
gimp_display_shell_get_padding (shell, &padding_mode, &padding_color);
gimp_display_shell_set_padding (shell, padding_mode, &padding_color);
gimp_display_shell_title_update (shell);
shell->disp_width = canvas->allocation.width;
shell->disp_height = canvas->allocation.height;
/* set up the scrollbar observers */
g_signal_connect (shell->hsbdata, "value-changed",
G_CALLBACK (gimp_display_shell_hscrollbar_update),
shell);
g_signal_connect (shell->vsbdata, "value-changed",
G_CALLBACK (gimp_display_shell_vscrollbar_update),
shell);
/* set the initial cursor */
gimp_display_shell_set_cursor (shell,
GDK_TOP_LEFT_ARROW,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_NONE);
/* allow shrinking */
gtk_widget_set_size_request (GTK_WIDGET (shell), 0, 0);
gimp_display_shell_draw_vectors (shell);
}
void
gimp_display_shell_canvas_size_allocate (GtkWidget *widget,
GtkAllocation *allocation,
GimpDisplayShell *shell)
{
/* are we in destruction? */
if (! shell->display || ! shell->display->shell)
return;
if ((shell->disp_width != allocation->width) ||
(shell->disp_height != allocation->height))
{
if (shell->zoom_on_resize &&
shell->disp_width > 64 &&
shell->disp_height > 64 &&
allocation->width > 64 &&
allocation->height > 64)
{
gdouble scale = gimp_zoom_model_get_factor (shell->zoom);
gint offset_x;
gint offset_y;
/* multiply the zoom_factor with the ratio of the new and
* old canvas diagonals
*/
scale *= (sqrt (SQR (allocation->width) +
SQR (allocation->height)) /
sqrt (SQR (shell->disp_width) +
SQR (shell->disp_height)));
offset_x = UNSCALEX (shell, shell->offset_x);
offset_y = UNSCALEX (shell, shell->offset_y);
gimp_zoom_model_zoom (shell->zoom, GIMP_ZOOM_TO, scale);
shell->offset_x = SCALEX (shell, offset_x);
shell->offset_y = SCALEY (shell, offset_y);
}
shell->disp_width = allocation->width;
shell->disp_height = allocation->height;
gimp_display_shell_scroll_clamp_offsets (shell);
gimp_display_shell_scale_setup (shell);
gimp_display_shell_scaled (shell);
}
}
gboolean
gimp_display_shell_canvas_expose (GtkWidget *widget,
GdkEventExpose *eevent,
GimpDisplayShell *shell)
{
GdkRegion *region = NULL;
GdkRectangle *rects;
gint n_rects;
gint i;
/* are we in destruction? */
if (! shell->display || ! shell->display->shell)
return TRUE;
if (! shell->display->image)
{
cairo_t *cr;
cr = gdk_cairo_create (widget->window);
gdk_cairo_region (cr, eevent->region);
cairo_clip (cr);
gimp_canvas_draw_drop_zone (GIMP_CANVAS (shell->canvas), cr);
cairo_destroy (cr);
return TRUE;
}
/* If the call to gimp_display_shell_pause() would cause a redraw,
* we need to make sure that no XOR drawing happens on areas that
* have already been cleared by the windowing system.
*/
if (shell->paused_count == 0)
{
GdkRectangle area;
area.x = 0;
area.y = 0;
area.width = shell->disp_width;
area.height = shell->disp_height;
region = gdk_region_rectangle (&area);
gdk_region_subtract (region, eevent->region);
gimp_canvas_set_clip_region (GIMP_CANVAS (shell->canvas),
GIMP_CANVAS_STYLE_XOR, region);
gimp_canvas_set_clip_region (GIMP_CANVAS (shell->canvas),
GIMP_CANVAS_STYLE_XOR_DASHED, region);
}
gimp_display_shell_pause (shell);
if (region)
{
gimp_canvas_set_clip_region (GIMP_CANVAS (shell->canvas),
GIMP_CANVAS_STYLE_XOR, NULL);
gimp_canvas_set_clip_region (GIMP_CANVAS (shell->canvas),
GIMP_CANVAS_STYLE_XOR_DASHED, NULL);
gdk_region_destroy (region);
}
gdk_region_get_rectangles (eevent->region, &rects, &n_rects);
for (i = 0; i < n_rects; i++)
gimp_display_shell_draw_area (shell,
rects[i].x,
rects[i].y,
rects[i].width,
rects[i].height);
g_free (rects);
/* draw the transform tool preview */
gimp_display_shell_preview_transform (shell);
/* draw the grid */
gimp_display_shell_draw_grid (shell, &eevent->area);
/* draw the guides */
gimp_display_shell_draw_guides (shell);
/* draw the sample points */
gimp_display_shell_draw_sample_points (shell);
/* and the cursor (if we have a software cursor) */
gimp_display_shell_draw_cursor (shell);
/* restart (and recalculate) the selection boundaries */
gimp_display_shell_selection_control (shell, GIMP_SELECTION_ON);
gimp_display_shell_resume (shell);
return TRUE;
}
static void
gimp_display_shell_check_device_cursor (GimpDisplayShell *shell)
{
GdkDevice *current_device;
current_device = gimp_devices_get_current (shell->display->gimp);
shell->draw_cursor = ! current_device->has_cursor;
}
static void
gimp_display_shell_start_scrolling (GimpDisplayShell *shell,
gint x,
gint y)
{
g_return_if_fail (! shell->scrolling);
shell->scrolling = TRUE;
shell->scroll_start_x = x + shell->offset_x;
shell->scroll_start_y = y + shell->offset_y;
gimp_display_shell_set_override_cursor (shell, GDK_FLEUR);
gtk_grab_add (shell->canvas);
}
static void
gimp_display_shell_stop_scrolling (GimpDisplayShell *shell)
{
g_return_if_fail (shell->scrolling);
shell->scrolling = FALSE;
shell->scroll_start_x = 0;
shell->scroll_start_y = 0;
gimp_display_shell_unset_override_cursor (shell);
gtk_grab_remove (shell->canvas);
}
static void
gimp_display_shell_space_pressed (GimpDisplayShell *shell,
GdkModifierType state,
guint32 time)
{
Gimp *gimp = shell->display->gimp;
if (shell->space_pressed)
return;
switch (shell->display->config->space_bar_action)
{
case GIMP_SPACE_BAR_ACTION_NONE:
return;
case GIMP_SPACE_BAR_ACTION_PAN:
{
GimpCoords coords;
gimp_display_shell_get_device_coords (shell,
gimp_devices_get_current (gimp),
&coords);
gimp_display_shell_start_scrolling (shell, coords.x, coords.y);
gdk_pointer_grab (shell->canvas->window, FALSE,
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK,
NULL, NULL, time);
}
break;
case GIMP_SPACE_BAR_ACTION_MOVE:
{
GimpTool *active_tool = tool_manager_get_active (gimp);
if (! active_tool || GIMP_IS_MOVE_TOOL (active_tool))
return;
shell->space_shaded_tool =
gimp_object_get_name (GIMP_OBJECT (active_tool->tool_info));
gimp_context_set_tool (gimp_get_user_context (gimp),
gimp_get_tool_info (gimp, "gimp-move-tool"));
tool_manager_focus_display_active (gimp, shell->display);
tool_manager_modifier_state_active (gimp, state, shell->display);
}
break;
}
gdk_keyboard_grab (shell->canvas->window, FALSE, time);
shell->space_pressed = TRUE;
}
static void
gimp_display_shell_space_released (GimpDisplayShell *shell,
GdkModifierType state,
guint32 time)
{
Gimp *gimp = shell->display->gimp;
if (! shell->space_pressed && ! shell->space_release_pending)
return;
switch (shell->display->config->space_bar_action)
{
case GIMP_SPACE_BAR_ACTION_NONE:
break;
case GIMP_SPACE_BAR_ACTION_PAN:
gimp_display_shell_stop_scrolling (shell);
gdk_display_pointer_ungrab (gtk_widget_get_display (shell->canvas), time);
break;
case GIMP_SPACE_BAR_ACTION_MOVE:
gimp_context_set_tool (gimp_get_user_context (gimp),
gimp_get_tool_info (gimp,
shell->space_shaded_tool));
shell->space_shaded_tool = NULL;
tool_manager_focus_display_active (gimp, shell->display);
tool_manager_modifier_state_active (gimp, state, shell->display);
break;
}
gdk_display_keyboard_ungrab (gtk_widget_get_display (shell->canvas), time);
shell->space_pressed = FALSE;
shell->space_release_pending = FALSE;
}
static void
gimp_display_shell_update_focus (GimpDisplayShell *shell,
GimpCoords *image_coords,
GdkModifierType state)
{
Gimp *gimp = shell->display->gimp;
tool_manager_focus_display_active (gimp, shell->display);
tool_manager_modifier_state_active (gimp, state, shell->display);
if (image_coords)
tool_manager_oper_update_active (gimp,
image_coords, state,
shell->proximity,
shell->display);
}
gboolean
gimp_display_shell_canvas_tool_events (GtkWidget *canvas,
GdkEvent *event,
GimpDisplayShell *shell)
{
GimpDisplay *display;
GimpImage *image;
Gimp *gimp;
GdkDisplay *gdk_display;
GimpTool *active_tool;
GimpCoords display_coords;
GimpCoords image_coords;
GdkModifierType state;
guint32 time;
gboolean device_changed = FALSE;
gboolean return_val = FALSE;
gboolean update_sw_cursor = FALSE;
g_return_val_if_fail (GTK_WIDGET_REALIZED (canvas), FALSE);
/* are we in destruction? */
if (! shell->display || ! shell->display->shell)
return TRUE;
/* set the active display before doing any other canvas event processing */
if (gimp_display_shell_events (canvas, event, shell))
return TRUE;
display = shell->display;
gimp = display->gimp;
image = display->image;
if (! image)
return TRUE;
gdk_display = gtk_widget_get_display (canvas);
/* Find out what device the event occurred upon */
if (! gimp->busy && gimp_devices_check_change (gimp, event))
{
gimp_display_shell_check_device_cursor (shell);
device_changed = TRUE;
}
gimp_display_shell_get_event_coords (shell, event,
gimp_devices_get_current (gimp),
&display_coords);
gimp_display_shell_get_event_state (shell, event,
gimp_devices_get_current (gimp),
&state);
time = gdk_event_get_time (event);
/* GimpCoords passed to tools are ALWAYS in image coordinates */
gimp_display_shell_untransform_coordinate (shell,
&display_coords,
&image_coords);
active_tool = tool_manager_get_active (gimp);
if (active_tool && gimp_tool_control_get_snap_to (active_tool->control))
{
gint x, y, width, height;
gimp_tool_control_get_snap_offsets (active_tool->control,
&x, &y, &width, &height);
if (gimp_display_shell_snap_coords (shell,
&image_coords,
x, y, width, height))
{
update_sw_cursor = TRUE;
}
}
/* If the device (and maybe the tool) has changed, update the new
* tool's state
*/
if (device_changed && GTK_WIDGET_HAS_FOCUS (canvas))
{
gimp_display_shell_update_focus (shell, &image_coords, state);
}
switch (event->type)
{
case GDK_ENTER_NOTIFY:
{
GdkEventCrossing *cevent = (GdkEventCrossing *) event;
GIMP_LOG (TOOL_EVENTS, "event (display %p): ENTER_NOTIFY", display);
if (cevent->mode != GDK_CROSSING_NORMAL)
return TRUE;
update_sw_cursor = TRUE;
tool_manager_oper_update_active (gimp,
&image_coords, state,
shell->proximity,
display);
}
break;
case GDK_LEAVE_NOTIFY:
{
GdkEventCrossing *cevent = (GdkEventCrossing *) event;
GIMP_LOG (TOOL_EVENTS, "event (display %p): LEAVE_NOTIFY", display);
if (cevent->mode != GDK_CROSSING_NORMAL)
return TRUE;
shell->proximity = FALSE;
gimp_display_shell_clear_cursor (shell);
tool_manager_oper_update_active (gimp,
&image_coords, state,
shell->proximity,
display);
}
break;
case GDK_PROXIMITY_IN:
GIMP_LOG (TOOL_EVENTS, "event (display %p): PROXIMITY_IN", display);
tool_manager_oper_update_active (gimp,
&image_coords, state,
shell->proximity,
display);
break;
case GDK_PROXIMITY_OUT:
GIMP_LOG (TOOL_EVENTS, "event (display %p): PROXIMITY_OUT", display);
shell->proximity = FALSE;
gimp_display_shell_clear_cursor (shell);
tool_manager_oper_update_active (gimp,
&image_coords, state,
shell->proximity,
display);
break;
case GDK_FOCUS_CHANGE:
{
GdkEventFocus *fevent = (GdkEventFocus *) event;
if (fevent->in)
{
GIMP_LOG (TOOL_EVENTS, "event (display %p): FOCUS_IN", display);
GTK_WIDGET_SET_FLAGS (canvas, GTK_HAS_FOCUS);
/* press modifier keys when the canvas gets the focus
*
* in "click to focus" mode, we did this on BUTTON_PRESS, so
* do it here only if button_press_before_focus is FALSE
*/
if (! shell->button_press_before_focus)
{
gimp_display_shell_update_focus (shell, &image_coords, state);
}
}
else
{
GIMP_LOG (TOOL_EVENTS, "event (display %p): FOCUS_OUT", display);
GTK_WIDGET_UNSET_FLAGS (canvas, GTK_HAS_FOCUS);
/* reset it here to be prepared for the next
* FOCUS_IN / BUTTON_PRESS confusion
*/
shell->button_press_before_focus = FALSE;
/* release modifier keys when the canvas loses the focus */
tool_manager_focus_display_active (gimp, NULL);
tool_manager_oper_update_active (gimp,
&image_coords, 0,
shell->proximity,
display);
}
/* stop the signal because otherwise gtk+ exposes the whole
* canvas to get the non-existant focus indicator drawn
*/
return_val = TRUE;
}
break;
case GDK_BUTTON_PRESS:
{
GdkEventButton *bevent = (GdkEventButton *) event;
GdkEventMask event_mask;
GIMP_LOG (TOOL_EVENTS, "event (display %p): BUTTON_PRESS (%d)",
display, bevent->button);
if (! GTK_WIDGET_HAS_FOCUS (canvas))
{
/* in "click to focus" mode, the BUTTON_PRESS arrives before
* FOCUS_IN, so we have to update the tool's modifier state here
*/
gimp_display_shell_update_focus (shell, &image_coords, state);
active_tool = tool_manager_get_active (gimp);
if (active_tool)
{
if ((! gimp_image_is_empty (image) ||
gimp_tool_control_get_handle_empty_image (active_tool->control)) &&
(bevent->button == 1 ||
bevent->button == 2 ||
bevent->button == 3))
{
tool_manager_cursor_update_active (gimp,
&image_coords, state,
display);
}
else if (gimp_image_is_empty (image) &&
! gimp_tool_control_get_handle_empty_image (active_tool->control))
{
gimp_display_shell_set_cursor (shell,
GIMP_CURSOR_MOUSE,
gimp_tool_control_get_tool_cursor (active_tool->control),
GIMP_CURSOR_MODIFIER_BAD);
}
}
else
{
gimp_display_shell_set_cursor (shell,
GIMP_CURSOR_MOUSE,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_BAD);
}
shell->button_press_before_focus = TRUE;
/* we expect a FOCUS_IN event to follow, but can't rely
* on it, so force one
*/
gdk_window_focus (canvas->window, time);
}
/* ignore new mouse events */
if (gimp->busy || shell->scrolling)
return TRUE;
active_tool = tool_manager_get_active (gimp);
switch (bevent->button)
{
case 1:
state |= GDK_BUTTON1_MASK;
event_mask = (GDK_BUTTON1_MOTION_MASK | GDK_BUTTON_RELEASE_MASK);
if (active_tool &&
(! shell->display->config->perfect_mouse ||
(gimp_tool_control_get_motion_mode (active_tool->control) !=
GIMP_MOTION_MODE_EXACT)))
{
/* don't request motion hins for XInput devices because
* the wacom driver is known to report crappy hints
* (#6901) --mitch
*/
if (gimp_devices_get_current (gimp) ==
gdk_display_get_core_pointer (gdk_display))
{
event_mask |= GDK_POINTER_MOTION_HINT_MASK;
}
}
gdk_pointer_grab (canvas->window,
FALSE, event_mask, NULL, NULL, time);
if (! shell->space_pressed && ! shell->space_release_pending)
gdk_keyboard_grab (canvas->window, FALSE, time);
if (active_tool &&
(! gimp_image_is_empty (image) ||
gimp_tool_control_get_handle_empty_image (active_tool->control)))
{
gboolean initialized = TRUE;
/* initialize the current tool if it has no drawable
*/
if (! active_tool->drawable)
{
initialized = tool_manager_initialize_active (gimp,
display);
}
else if ((active_tool->drawable !=
gimp_image_get_active_drawable (image)) &&
! gimp_tool_control_get_preserve (active_tool->control))
{
/* create a new one, deleting the current
*/
gimp_context_tool_changed (gimp_get_user_context (gimp));
/* make sure the newly created tool has the right state
*/
gimp_display_shell_update_focus (shell, &image_coords, state);
initialized = tool_manager_initialize_active (gimp, display);
}
if (initialized)
{
tool_manager_button_press_active (gimp,
&image_coords,
time, state, display);
shell->last_read_motion_time = bevent->time;
}
}
break;
case 2:
state |= GDK_BUTTON2_MASK;
gimp_display_shell_start_scrolling (shell, bevent->x, bevent->y);
break;
case 3:
state |= GDK_BUTTON3_MASK;
gimp_ui_manager_ui_popup (shell->popup_manager,
"/dummy-menubar/image-popup",
GTK_WIDGET (shell),
NULL, NULL, NULL, NULL);
return_val = TRUE;
break;
default:
break;
}
}
break;
case GDK_BUTTON_RELEASE:
{
GdkEventButton *bevent = (GdkEventButton *) event;
GIMP_LOG (TOOL_EVENTS, "event (display %p): BUTTON_RELEASE (%d)",
display, bevent->button);
gimp_display_shell_autoscroll_stop (shell);
if (gimp->busy)
return TRUE;
active_tool = tool_manager_get_active (gimp);
switch (bevent->button)
{
case 1:
state &= ~GDK_BUTTON1_MASK;
if (! shell->space_pressed && ! shell->space_release_pending)
gdk_display_keyboard_ungrab (gdk_display, time);
gdk_display_pointer_ungrab (gdk_display, time);
gtk_grab_add (canvas);
if (active_tool &&
(! gimp_image_is_empty (image) ||
gimp_tool_control_get_handle_empty_image (active_tool->control)))
{
if (gimp_tool_control_is_active (active_tool->control))
{
tool_manager_button_release_active (gimp,
&image_coords,
time, state,
display);
}
}
/* update the tool's modifier state because it didn't get
* key events while BUTTON1 was down
*/
gimp_display_shell_update_focus (shell, &image_coords, state);
gtk_grab_remove (canvas);
if (shell->space_release_pending)
gimp_display_shell_space_released (shell, state, time);
break;
case 2:
state &= ~GDK_BUTTON2_MASK;
gimp_display_shell_stop_scrolling (shell);
break;
case 3:
state &= ~GDK_BUTTON3_MASK;
break;
default:
break;
}
}
break;
case GDK_SCROLL:
{
GdkEventScroll *sevent = (GdkEventScroll *) event;
GdkScrollDirection direction;
GimpController *wheel;
GIMP_LOG (TOOL_EVENTS, "event (display %p): SCROLL (%d)",
display, sevent->direction);
wheel = gimp_controllers_get_wheel (gimp);
if (wheel &&
gimp_controller_wheel_scroll (GIMP_CONTROLLER_WHEEL (wheel),
sevent))
return TRUE;
direction = sevent->direction;
if (state & GDK_CONTROL_MASK)
{
switch (direction)
{
case GDK_SCROLL_UP:
gimp_display_shell_scale_to (shell, GIMP_ZOOM_IN, 0.0,
sevent->x, sevent->y);
break;
case GDK_SCROLL_DOWN:
gimp_display_shell_scale_to (shell, GIMP_ZOOM_OUT, 0.0,
sevent->x, sevent->y);
break;
default:
break;
}
}
else
{
GtkAdjustment *adj = NULL;
gdouble value;
if (state & GDK_SHIFT_MASK)
switch (direction)
{
case GDK_SCROLL_UP: direction = GDK_SCROLL_LEFT; break;
case GDK_SCROLL_DOWN: direction = GDK_SCROLL_RIGHT; break;
case GDK_SCROLL_LEFT: direction = GDK_SCROLL_UP; break;
case GDK_SCROLL_RIGHT: direction = GDK_SCROLL_DOWN; break;
}
switch (direction)
{
case GDK_SCROLL_LEFT:
case GDK_SCROLL_RIGHT:
adj = shell->hsbdata;
break;
case GDK_SCROLL_UP:
case GDK_SCROLL_DOWN:
adj = shell->vsbdata;
break;
}
value = adj->value + ((direction == GDK_SCROLL_UP ||
direction == GDK_SCROLL_LEFT) ?
-adj->page_increment / 2 :
adj->page_increment / 2);
value = CLAMP (value, adj->lower, adj->upper - adj->page_size);
gtk_adjustment_set_value (adj, value);
}
/* GimpCoords passed to tools are ALWAYS in image coordinates */
gimp_display_shell_untransform_coordinate (shell,
&display_coords,
&image_coords);
active_tool = tool_manager_get_active (gimp);
if (active_tool &&
gimp_tool_control_get_snap_to (active_tool->control))
{
gint x, y, width, height;
gimp_tool_control_get_snap_offsets (active_tool->control,
&x, &y, &width, &height);
if (gimp_display_shell_snap_coords (shell,
&image_coords,
x, y, width, height))
{
update_sw_cursor = TRUE;
}
}
tool_manager_oper_update_active (gimp,
&image_coords, state,
shell->proximity,
display);
return_val = TRUE;
}
break;
case GDK_MOTION_NOTIFY:
{
GdkEventMotion *mevent = (GdkEventMotion *) event;
GdkEvent *compressed_motion = NULL;
GIMP_LOG (TOOL_EVENTS, "event (display %p): MOTION_NOTIFY", display);
if (gimp->busy)
return TRUE;
active_tool = tool_manager_get_active (gimp);
if (active_tool &&
gimp_tool_control_get_motion_mode (active_tool->control) ==
GIMP_MOTION_MODE_COMPRESS)
{
compressed_motion = gimp_display_shell_compress_motion (shell);
}
if (compressed_motion)
{
GdkDevice *device = gimp_devices_get_current (gimp);
gimp_display_shell_get_event_coords (shell, compressed_motion,
device, &display_coords);
gimp_display_shell_get_event_state (shell, compressed_motion,
device, &state);
time = gdk_event_get_time (event);
/* GimpCoords passed to tools are ALWAYS in image coordinates */
gimp_display_shell_untransform_coordinate (shell,
&display_coords,
&image_coords);
if (active_tool &&
gimp_tool_control_get_snap_to (active_tool->control))
{
gint x, y, width, height;
gimp_tool_control_get_snap_offsets (active_tool->control,
&x, &y, &width, &height);
gimp_display_shell_snap_coords (shell,
&image_coords,
x, y, width, height);
}
}
/* Ask for the pointer position, but ignore it except for cursor
* handling, so motion events sync with the button press/release events
*/
if (mevent->is_hint)
{
gimp_display_shell_get_device_coords (shell,
mevent->device,
&display_coords);
}
update_sw_cursor = TRUE;
if (! shell->proximity)
{
shell->proximity = TRUE;
gimp_display_shell_check_device_cursor (shell);
}
if (shell->scrolling)
{
gimp_display_shell_scroll (shell,
(shell->scroll_start_x - mevent->x -
shell->offset_x),
(shell->scroll_start_y - mevent->y -
shell->offset_y));
}
else if (state & GDK_BUTTON1_MASK)
{
if (active_tool &&
gimp_tool_control_is_active (active_tool->control) &&
(! gimp_image_is_empty (image) ||
gimp_tool_control_get_handle_empty_image (active_tool->control)))
{
GdkTimeCoord **history_events;
gint n_history_events;
/* if the first mouse button is down, check for automatic
* scrolling...
*/
if ((mevent->x < 0 ||
mevent->y < 0 ||
mevent->x > shell->disp_width ||
mevent->y > shell->disp_height) &&
! gimp_tool_control_get_scroll_lock (active_tool->control))
{
gimp_display_shell_autoscroll_start (shell, state, mevent);
}
/* gdk_device_get_history() has several quirks. First is
* that events with borderline timestamps at both ends
* are included. Because of that we need to add 1 to
* lower border. The second is due to poor X event
* resolution. We need to do -1 to ensure that the
* amount of events between timestamps is final or
* risk loosing some.
*/
if ((gimp_tool_control_get_motion_mode (active_tool->control) ==
GIMP_MOTION_MODE_EXACT) &&
gdk_device_get_history (mevent->device, mevent->window,
shell->last_read_motion_time + 1,
mevent->time - 1,
&history_events,
&n_history_events))
{
gint i;
for (i = 0; i < n_history_events; i++)
{
gimp_display_shell_get_time_coords (shell,
mevent->device,
history_events[i],
&display_coords);
/* GimpCoords passed to tools are ALWAYS in
* image coordinates
*/
gimp_display_shell_untransform_coordinate (shell,
&display_coords,
&image_coords);
if (gimp_tool_control_get_snap_to (active_tool->control))
{
gint x, y, width, height;
gimp_tool_control_get_snap_offsets (active_tool->control,
&x, &y, &width, &height);
gimp_display_shell_snap_coords (shell,
&image_coords,
x, y, width, height);
}
/* Early removal of useless events saves CPU time.
*/
if (gimp_display_shell_eval_event (shell,
&image_coords,
DEFAULT_EVENT_SMOOTHING,
DEFAULT_EVENT_FILTER,
history_events[i]->time))
{
tool_manager_motion_active (gimp,
&image_coords,
history_events[i]->time,
state,
display);
}
shell->last_read_motion_time = history_events[i]->time;
}
gdk_device_free_history (history_events, n_history_events);
}
else
{
/* Early removal of useless events saves CPU time.
*/
if (gimp_display_shell_eval_event (shell,
&image_coords,
DEFAULT_EVENT_SMOOTHING,
DEFAULT_EVENT_FILTER,
time))
{
tool_manager_motion_active (gimp,
&image_coords,
time,
state,
display);
}
shell->last_read_motion_time = time;
}
}
}
if (! (state &
(GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK)))
{
/* Early removal of useless events saves CPU time.
* Smoothing is 0.0 here for coasting.
*/
if (gimp_display_shell_eval_event (shell,
&image_coords,
0.0,
DEFAULT_EVENT_FILTER,
time))
{
tool_manager_oper_update_active (gimp,
&image_coords, state,
shell->proximity,
display);
}
shell->last_read_motion_time = time;
}
}
break;
case GDK_KEY_PRESS:
{
GdkEventKey *kevent = (GdkEventKey *) event;
GIMP_LOG (TOOL_EVENTS, "event (display %p): KEY_PRESS (%d, %s)",
display, kevent->keyval,
gdk_keyval_name (kevent->keyval) ?
gdk_keyval_name (kevent->keyval) : "<none>");
if (state & GDK_BUTTON1_MASK)
{
switch (kevent->keyval)
{
case GDK_Alt_L: case GDK_Alt_R:
case GDK_Shift_L: case GDK_Shift_R:
case GDK_Control_L: case GDK_Control_R:
{
GdkModifierType key;
key = gimp_display_shell_key_to_state (kevent->keyval);
state |= key;
if (active_tool &&
gimp_tool_control_is_active (active_tool->control) &&
! gimp_image_is_empty (image))
{
tool_manager_active_modifier_state_active (gimp, state,
display);
}
}
break;
}
}
else
{
tool_manager_focus_display_active (gimp, display);
switch (kevent->keyval)
{
case GDK_Return:
case GDK_KP_Enter:
case GDK_ISO_Enter:
case GDK_BackSpace:
case GDK_Delete:
case GDK_Escape:
case GDK_Left:
case GDK_Right:
case GDK_Up:
case GDK_Down:
if (gimp_image_is_empty (image) ||
! tool_manager_key_press_active (gimp,
kevent,
display))
{
GimpController *keyboard = gimp_controllers_get_keyboard (gimp);
if (keyboard)
gimp_controller_keyboard_key_press (GIMP_CONTROLLER_KEYBOARD (keyboard),
kevent);
}
return_val = TRUE;
break;
case GDK_space:
case GDK_KP_Space:
gimp_display_shell_space_pressed (shell, state, time);
return_val = TRUE;
break;
case GDK_Tab:
case GDK_ISO_Left_Tab:
if (state & GDK_CONTROL_MASK)
{
if (! gimp_image_is_empty (image))
{
if (kevent->keyval == GDK_Tab)
gimp_display_shell_layer_select_init (shell,
1, kevent->time);
else
gimp_display_shell_layer_select_init (shell,
-1, kevent->time);
}
}
else
{
gimp_dialog_factories_toggle ();
}
return_val = TRUE;
break;
/* Update the state based on modifiers being pressed */
case GDK_Alt_L: case GDK_Alt_R:
case GDK_Shift_L: case GDK_Shift_R:
case GDK_Control_L: case GDK_Control_R:
{
GdkModifierType key;
key = gimp_display_shell_key_to_state (kevent->keyval);
state |= key;
if (! gimp_image_is_empty (image))
tool_manager_modifier_state_active (gimp, state, display);
}
break;
}
tool_manager_oper_update_active (gimp,
&image_coords, state,
shell->proximity,
display);
}
}
break;
case GDK_KEY_RELEASE:
{
GdkEventKey *kevent = (GdkEventKey *) event;
GIMP_LOG (TOOL_EVENTS, "event (display %p): KEY_RELEASE (%d, %s)",
display, kevent->keyval,
gdk_keyval_name (kevent->keyval) ?
gdk_keyval_name (kevent->keyval) : "<none>");
if (state & GDK_BUTTON1_MASK)
{
switch (kevent->keyval)
{
case GDK_Alt_L: case GDK_Alt_R:
case GDK_Shift_L: case GDK_Shift_R:
case GDK_Control_L: case GDK_Control_R:
{
GdkModifierType key;
key = gimp_display_shell_key_to_state (kevent->keyval);
state &= ~key;
if (active_tool &&
gimp_tool_control_is_active (active_tool->control) &&
! gimp_image_is_empty (image))
{
tool_manager_active_modifier_state_active (gimp, state,
display);
}
}
break;
}
}
else
{
tool_manager_focus_display_active (gimp, display);
switch (kevent->keyval)
{
case GDK_space:
case GDK_KP_Space:
gimp_display_shell_space_released (shell, state, time);
return_val = TRUE;
break;
/* Update the state based on modifiers being pressed */
case GDK_Alt_L: case GDK_Alt_R:
case GDK_Shift_L: case GDK_Shift_R:
case GDK_Control_L: case GDK_Control_R:
{
GdkModifierType key;
key = gimp_display_shell_key_to_state (kevent->keyval);
state &= ~key;
/* For all modifier keys: call the tools
* modifier_state *and* oper_update method so tools
* can choose if they are interested in the press
* itself or only in the resulting state
*/
if (! gimp_image_is_empty (image))
tool_manager_modifier_state_active (gimp, state, display);
}
break;
}
tool_manager_oper_update_active (gimp,
&image_coords, state,
shell->proximity,
display);
}
}
break;
default:
break;
}
/* if we reached this point in gimp_busy mode, return now */
if (gimp->busy)
return return_val;
/* cursor update support */
if (shell->display->config->cursor_updating)
{
active_tool = tool_manager_get_active (gimp);
if (active_tool)
{
if ((! gimp_image_is_empty (image) ||
gimp_tool_control_get_handle_empty_image (active_tool->control)) &&
! (state & (GDK_BUTTON1_MASK |
GDK_BUTTON2_MASK |
GDK_BUTTON3_MASK)))
{
tool_manager_cursor_update_active (gimp,
&image_coords, state,
display);
}
else if (gimp_image_is_empty (image) &&
! gimp_tool_control_get_handle_empty_image (active_tool->control))
{
gimp_display_shell_set_cursor (shell,
GIMP_CURSOR_MOUSE,
gimp_tool_control_get_tool_cursor (active_tool->control),
GIMP_CURSOR_MODIFIER_BAD);
}
}
else
{
gimp_display_shell_set_cursor (shell,
GIMP_CURSOR_MOUSE,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_BAD);
}
}
if (update_sw_cursor)
gimp_display_shell_update_cursor (shell,
(gint) display_coords.x,
(gint) display_coords.y,
(gint) image_coords.x,
(gint) image_coords.y);
return return_val;
}
static gboolean
gimp_display_shell_ruler_button_press (GtkWidget *widget,
GdkEventButton *event,
GimpDisplayShell *shell,
gboolean horizontal)
{
GimpDisplay *display = shell->display;
if (display->gimp->busy)
return TRUE;
if (! display->image)
return TRUE;
if (event->type == GDK_BUTTON_PRESS && event->button == 1)
{
GimpTool *active_tool;
gboolean sample_point;
active_tool = tool_manager_get_active (display->gimp);
sample_point = (event->state & GDK_CONTROL_MASK);
if (! ((sample_point && (GIMP_IS_COLOR_TOOL (active_tool) &&
! GIMP_IS_IMAGE_MAP_TOOL (active_tool) &&
! (GIMP_IS_PAINT_TOOL (active_tool) &&
! GIMP_PAINT_TOOL (active_tool)->pick_colors)))
||
(! sample_point && GIMP_IS_MOVE_TOOL (active_tool))))
{
GimpToolInfo *tool_info;
tool_info = gimp_get_tool_info (display->gimp,
sample_point ?
"gimp-color-picker-tool" :
"gimp-move-tool");
if (tool_info)
gimp_context_set_tool (gimp_get_user_context (display->gimp),
tool_info);
}
active_tool = tool_manager_get_active (display->gimp);
if (active_tool)
{
if (! GTK_WIDGET_HAS_FOCUS (shell->canvas))
{
gimp_display_shell_update_focus (shell, NULL, event->state);
shell->button_press_before_focus = TRUE;
/* we expect a FOCUS_IN event to follow, but can't rely
* on it, so force one
*/
gdk_window_focus (shell->canvas->window,
gdk_event_get_time ((GdkEvent *) event));
}
gdk_pointer_grab (shell->canvas->window, FALSE,
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON_RELEASE_MASK,
NULL, NULL, event->time);
gdk_keyboard_grab (shell->canvas->window, FALSE, event->time);
if (sample_point)
gimp_color_tool_start_sample_point (active_tool, display);
else if (horizontal)
gimp_move_tool_start_hguide (active_tool, display);
else
gimp_move_tool_start_vguide (active_tool, display);
}
}
return FALSE;
}
gboolean
gimp_display_shell_hruler_button_press (GtkWidget *widget,
GdkEventButton *event,
GimpDisplayShell *shell)
{
return gimp_display_shell_ruler_button_press (widget, event, shell, TRUE);
}
gboolean
gimp_display_shell_vruler_button_press (GtkWidget *widget,
GdkEventButton *event,
GimpDisplayShell *shell)
{
return gimp_display_shell_ruler_button_press (widget, event, shell, FALSE);
}
gboolean
gimp_display_shell_origin_button_press (GtkWidget *widget,
GdkEventButton *event,
GimpDisplayShell *shell)
{
if (! shell->display->gimp->busy)
{
if (event->button == 1)
{
gboolean unused;
g_signal_emit_by_name (shell, "popup-menu", &unused);
}
}
/* Return TRUE to stop signal emission so the button doesn't grab the
* pointer away from us.
*/
return TRUE;
}
gboolean
gimp_display_shell_quick_mask_button_press (GtkWidget *widget,
GdkEventButton *bevent,
GimpDisplayShell *shell)
{
if (! shell->display->image)
return TRUE;
if ((bevent->type == GDK_BUTTON_PRESS) && (bevent->button == 3))
{
gimp_ui_manager_ui_popup (shell->menubar_manager, "/quick-mask-popup",
GTK_WIDGET (shell),
NULL, NULL, NULL, NULL);
return TRUE;
}
return FALSE;
}
void
gimp_display_shell_quick_mask_toggled (GtkWidget *widget,
GimpDisplayShell *shell)
{
if (GTK_TOGGLE_BUTTON (widget)->active !=
gimp_image_get_quick_mask_state (shell->display->image))
{
gimp_image_set_quick_mask_state (shell->display->image,
GTK_TOGGLE_BUTTON (widget)->active);
gimp_image_flush (shell->display->image);
}
}
gboolean
gimp_display_shell_nav_button_press (GtkWidget *widget,
GdkEventButton *bevent,
GimpDisplayShell *shell)
{
if (! shell->display->image)
return TRUE;
if ((bevent->type == GDK_BUTTON_PRESS) && (bevent->button == 1))
{
gimp_navigation_editor_popup (shell, widget, bevent->x, bevent->y);
}
return TRUE;
}
/* private functions */
static void
gimp_display_shell_vscrollbar_update (GtkAdjustment *adjustment,
GimpDisplayShell *shell)
{
gimp_display_shell_scroll (shell, 0, (adjustment->value - shell->offset_y));
}
static void
gimp_display_shell_hscrollbar_update (GtkAdjustment *adjustment,
GimpDisplayShell *shell)
{
gimp_display_shell_scroll (shell, (adjustment->value - shell->offset_x), 0);
}
static GdkModifierType
gimp_display_shell_key_to_state (gint key)
{
switch (key)
{
case GDK_Alt_L:
case GDK_Alt_R:
return GDK_MOD1_MASK;
case GDK_Shift_L:
case GDK_Shift_R:
return GDK_SHIFT_MASK;
case GDK_Control_L:
case GDK_Control_R:
return GDK_CONTROL_MASK;
default:
return 0;
}
}
/* gimp_display_shell_compress_motion:
*
* This function walks the whole GDK event queue seeking motion events
* corresponding to the widget 'widget'. If it finds any it will
* remove them from the queue, and return the most recent motion event.
* Otherwise it will return NULL.
*
* The gimp_display_shell_compress_motion function source may be re-used under
* the XFree86-style license. <adam@gimp.org>
*/
static GdkEvent *
gimp_display_shell_compress_motion (GimpDisplayShell *shell)
{
GList *requeued_events = NULL;
GList *list;
GdkEvent *last_motion = NULL;
/* Move the entire GDK event queue to a private list, filtering
* out any motion events for the desired widget.
*/
while (gdk_events_pending ())
{
GdkEvent *event = gdk_event_get ();
if (!event)
{
/* Do nothing */
}
else if ((gtk_get_event_widget (event) == shell->canvas) &&
(event->any.type == GDK_MOTION_NOTIFY))
{
if (last_motion)
gdk_event_free (last_motion);
last_motion = event;
}
else
{
requeued_events = g_list_prepend (requeued_events, event);
}
}
/* Replay the remains of our private event list back into the
* event queue in order.
*/
requeued_events = g_list_reverse (requeued_events);
for (list = requeued_events; list; list = g_list_next (list))
{
GdkEvent *event = list->data;
gdk_event_put (event);
gdk_event_free (event);
}
g_list_free (requeued_events);
return last_motion;
}
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