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Gimp/app/display/gimpdisplayshell-callbacks.c
Sven Neumann c3bb11def3 switched meaning of Ctrl and Shift modifiers used with the mouse scroll 
2005-02-05  Sven Neumann  <sven@gimp.org>

	* app/display/gimpdisplayshell-callbacks.c
	(gimp_display_shell_canvas_tool_events): switched meaning of Ctrl
	and Shift modifiers used with the mouse scroll wheel. The HIG
	suggests to use Ctrl for zooming and it makes GIMP more consistent
	with other apps (for example Inkscape).
2005-02-05 20:49:28 +00:00

1594 lines
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/* The GIMP -- an 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 <gtk/gtk.h>
#include <gdk/gdkkeysyms.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/gimpcontainer.h"
#include "core/gimpcontext.h"
#include "core/gimpimage.h"
#include "core/gimpimage-guides.h"
#include "core/gimpimage-qmask.h"
#include "core/gimplayer.h"
#include "core/gimptoolinfo.h"
#include "tools/gimpmovetool.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-intl.h"
/* #define DEBUG_MOVE_PUSH 1 */
/* 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);
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->gdisp || ! shell->gdisp->shell)
return TRUE;
gimp = shell->gdisp->gimage->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 (event->type == GDK_KEY_PRESS)
{
if (kevent->keyval == GDK_space && shell->space_release_pending)
{
shell->space_pressed = TRUE;
shell->space_release_pending = FALSE;
}
}
else
{
if (kevent->keyval == GDK_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_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_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 && GIMP_DISPLAY_CONFIG (gimp->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);
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_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->gdisp ==
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;
}
if (set_display)
{
Gimp *gimp = shell->gdisp->gimage->gimp;
/* Setting the context's display automatically sets the image, too */
gimp_context_set_display (gimp_get_user_context (gimp), shell->gdisp);
}
return FALSE;
}
void
gimp_display_shell_canvas_realize (GtkWidget *canvas,
GimpDisplayShell *shell)
{
GimpDisplayConfig *config;
GimpDisplay *gdisp;
GimpCanvasPaddingMode padding_mode;
GimpRGB padding_color;
gdisp = shell->gdisp;
config = GIMP_DISPLAY_CONFIG (gdisp->gimage->gimp->config);
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->gdisp || ! shell->gdisp->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 = shell->scale;
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);
shell->scale = 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->gdisp || ! shell->gdisp->shell)
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 guides */
gimp_display_shell_draw_guides (shell);
/* draw the grid */
gimp_display_shell_draw_grid (shell, &eevent->area);
/* 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_start (shell->select, TRUE);
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->gdisp->gimage->gimp);
shell->draw_cursor = ! current_device->has_cursor;
}
gboolean
gimp_display_shell_canvas_tool_events (GtkWidget *canvas,
GdkEvent *event,
GimpDisplayShell *shell)
{
GimpDisplay *gdisp;
GimpImage *gimage;
Gimp *gimp;
GdkDisplay *gdk_display;
GimpTool *active_tool;
GimpCoords display_coords;
GimpCoords image_coords;
GdkModifierType state;
guint32 time;
gboolean return_val = FALSE;
gboolean update_cursor = FALSE;
static GimpToolInfo *space_shaded_tool = NULL;
if (! canvas->window)
{
g_warning ("%s: called unrealized", G_STRFUNC);
return FALSE;
}
/* are we in destruction? */
if (! shell->gdisp || ! shell->gdisp->shell)
return TRUE;
/* set the active display before doing any other canvas event processing */
if (gimp_display_shell_events (canvas, event, shell))
return TRUE;
gdisp = shell->gdisp;
gimage = gdisp->gimage;
gimp = gimage->gimp;
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);
}
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_coords (shell,
&display_coords,
&image_coords);
active_tool = tool_manager_get_active (gimp);
if (active_tool && gimp_tool_control_auto_snap_to (active_tool->control))
{
gint x, y, width, height;
gimp_tool_control_snap_offsets (active_tool->control,
&x, &y, &width, &height);
if (gimp_display_shell_snap_coords (shell,
&image_coords,
&image_coords,
x, y, width, height))
{
update_cursor = TRUE;
}
}
switch (event->type)
{
case GDK_ENTER_NOTIFY:
{
GdkEventCrossing *cevent = (GdkEventCrossing *) event;
if (cevent->mode != GDK_CROSSING_NORMAL)
return TRUE;
update_cursor = TRUE;
tool_manager_oper_update_active (gimp,
&image_coords, state,
gdisp);
}
break;
case GDK_LEAVE_NOTIFY:
{
GdkEventCrossing *cevent = (GdkEventCrossing *) event;
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,
gdisp);
}
break;
case GDK_PROXIMITY_IN:
tool_manager_oper_update_active (gimp,
&image_coords, state,
gdisp);
break;
case GDK_PROXIMITY_OUT:
shell->proximity = FALSE;
gimp_display_shell_clear_cursor (shell);
tool_manager_oper_update_active (gimp,
&image_coords, state,
gdisp);
break;
case GDK_FOCUS_CHANGE:
{
GdkEventFocus *fevent = (GdkEventFocus *) event;
if (fevent->in)
{
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)
{
tool_manager_focus_display_active (gimp, gdisp);
tool_manager_modifier_state_active (gimp, state, gdisp);
tool_manager_oper_update_active (gimp,
&image_coords, state,
gdisp);
}
}
else
{
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,
gdisp);
}
/* 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;
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
*/
tool_manager_focus_display_active (gimp, gdisp);
tool_manager_modifier_state_active (gimp, state, gdisp);
tool_manager_oper_update_active (gimp,
&image_coords, state,
gdisp);
active_tool = tool_manager_get_active (gimp);
if (active_tool)
{
if ((! gimp_image_is_empty (gimage) ||
gimp_tool_control_handles_empty_image (active_tool->control)) &&
(bevent->button == 1 ||
bevent->button == 2 ||
bevent->button == 3))
{
tool_manager_cursor_update_active (gimp,
&image_coords, state,
gdisp);
}
else if (gimp_image_is_empty (gimage))
{
gimp_display_shell_set_cursor (shell,
GIMP_CURSOR_BAD,
gimp_tool_control_get_tool_cursor (active_tool->control),
GIMP_CURSOR_MODIFIER_NONE);
}
}
else
{
gimp_display_shell_set_cursor (shell,
GIMP_CURSOR_BAD,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_NONE);
}
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)
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 &&
(! GIMP_DISPLAY_CONFIG (gimp->config)->perfect_mouse ||
(gimp_tool_control_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 (gimage) ||
gimp_tool_control_handles_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, gdisp);
}
else if ((active_tool->drawable !=
gimp_image_active_drawable (gimage)) &&
! gimp_tool_control_preserve (active_tool->control))
{
/* create a new one, deleting the current
*/
gimp_context_tool_changed (gimp_get_user_context (gimp));
initialized = tool_manager_initialize_active (gimp, gdisp);
}
if (initialized)
{
tool_manager_button_press_active (gimp,
&image_coords, time, state,
gdisp);
shell->last_motion_time = bevent->time;
}
}
break;
case 2:
state |= GDK_BUTTON2_MASK;
shell->scrolling = TRUE;
shell->scroll_start_x = bevent->x + shell->offset_x;
shell->scroll_start_y = bevent->y + shell->offset_y;
gtk_grab_add (canvas);
gimp_display_shell_set_override_cursor (shell, GDK_FLEUR);
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_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 (active_tool &&
(! gimp_image_is_empty (gimage) ||
gimp_tool_control_handles_empty_image (active_tool->control)))
{
if (gimp_tool_control_is_active (active_tool->control))
{
tool_manager_button_release_active (gimp,
&image_coords,
time, state,
gdisp);
}
}
/* update the tool's modifier state because it didn't get
* key events while BUTTON1 was down
*/
tool_manager_focus_display_active (gimp, gdisp);
tool_manager_modifier_state_active (gimp, state, gdisp);
tool_manager_oper_update_active (gimp,
&image_coords, state,
gdisp);
if (! shell->space_pressed && ! shell->space_release_pending)
gdk_display_keyboard_ungrab (gdk_display, time);
gdk_display_pointer_ungrab (gdk_display, time);
if (shell->space_release_pending)
{
#ifdef DEBUG_MOVE_PUSH
g_printerr ("%s: popping move tool\n", G_STRFUNC);
#endif
gimp_context_set_tool (gimp_get_user_context (gimp),
space_shaded_tool);
space_shaded_tool = NULL;
tool_manager_focus_display_active (gimp, gdisp);
tool_manager_modifier_state_active (gimp, state, gdisp);
tool_manager_oper_update_active (gimp,
&image_coords, state,
gdisp);
shell->space_release_pending = FALSE;
gdk_display_keyboard_ungrab (gdk_display, time);
}
break;
case 2:
state &= ~GDK_BUTTON2_MASK;
shell->scrolling = FALSE;
shell->scroll_start_x = 0;
shell->scroll_start_y = 0;
gtk_grab_remove (canvas);
gimp_display_shell_unset_override_cursor (shell);
break;
case 3:
state &= ~GDK_BUTTON3_MASK;
break;
default:
break;
}
}
break;
case GDK_SCROLL:
{
GdkEventScroll *sevent = (GdkEventScroll *) event;
GdkScrollDirection direction;
GimpController *wheel;
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 (shell, GIMP_ZOOM_IN, 0.0);
break;
case GDK_SCROLL_DOWN:
gimp_display_shell_scale (shell, GIMP_ZOOM_OUT, 0.0);
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_coords (shell,
&display_coords,
&image_coords);
active_tool = tool_manager_get_active (gimp);
if (active_tool &&
gimp_tool_control_auto_snap_to (active_tool->control))
{
gint x, y, width, height;
gimp_tool_control_snap_offsets (active_tool->control,
&x, &y, &width, &height);
if (gimp_display_shell_snap_coords (shell,
&image_coords,
&image_coords,
x, y, width, height))
{
update_cursor = TRUE;
}
}
tool_manager_oper_update_active (gimp,
&image_coords, state,
gdisp);
return_val = TRUE;
}
break;
case GDK_MOTION_NOTIFY:
{
GdkEventMotion *mevent = (GdkEventMotion *) event;
GdkEvent *compressed_motion = NULL;
if (gimp->busy)
return TRUE;
active_tool = tool_manager_get_active (gimp);
if (active_tool &&
gimp_tool_control_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_coords (shell,
&display_coords,
&image_coords);
if (active_tool &&
gimp_tool_control_auto_snap_to (active_tool->control))
{
gint x, y, width, height;
gimp_tool_control_snap_offsets (active_tool->control,
&x, &y, &width, &height);
gimp_display_shell_snap_coords (shell,
&image_coords,
&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_cursor = TRUE;
if (! shell->proximity)
{
shell->proximity = TRUE;
gimp_display_shell_check_device_cursor (shell);
}
if (state & GDK_BUTTON1_MASK)
{
if (active_tool &&
gimp_tool_control_is_active (active_tool->control) &&
(! gimp_image_is_empty (gimage) ||
gimp_tool_control_handles_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_scroll_lock (active_tool->control))
{
gimp_display_shell_autoscroll_start (shell, state, mevent);
}
if (gimp_tool_control_motion_mode (active_tool->control) ==
GIMP_MOTION_MODE_EXACT &&
gdk_device_get_history (mevent->device, mevent->window,
shell->last_motion_time,
mevent->time,
&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_coords (shell,
&display_coords,
&image_coords);
if (gimp_tool_control_auto_snap_to (active_tool->control))
{
gint x, y, width, height;
gimp_tool_control_snap_offsets (active_tool->control,
&x, &y, &width, &height);
gimp_display_shell_snap_coords (shell,
&image_coords,
&image_coords,
x, y, width, height);
}
tool_manager_motion_active (gimp,
&image_coords,
history_events[i]->time,
state,
gdisp);
}
gdk_device_free_history (history_events, n_history_events);
}
else
{
tool_manager_motion_active (gimp,
&image_coords, time, state,
gdisp);
}
shell->last_motion_time = mevent->time;
}
}
else if (state & GDK_BUTTON2_MASK)
{
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));
}
}
if (! (state &
(GDK_BUTTON1_MASK | GDK_BUTTON2_MASK | GDK_BUTTON3_MASK)))
{
tool_manager_oper_update_active (gimp,
&image_coords, state,
gdisp);
}
}
break;
case GDK_KEY_PRESS:
{
GdkEventKey *kevent = (GdkEventKey *) event;
tool_manager_focus_display_active (gimp, gdisp);
switch (kevent->keyval)
{
case GDK_Return:
case GDK_KP_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 (gimage) ||
! tool_manager_key_press_active (gimp,
kevent,
gdisp))
{
GimpController *keyboard;
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:
{
active_tool = tool_manager_get_active (gimp);
if (active_tool &&
! shell->space_pressed && ! GIMP_IS_MOVE_TOOL (active_tool))
{
GimpToolInfo *move_tool_info;
move_tool_info = (GimpToolInfo *)
gimp_container_get_child_by_name (gimp->tool_info_list,
"gimp-move-tool");
if (GIMP_IS_TOOL_INFO (move_tool_info))
{
#ifdef DEBUG_MOVE_PUSH
g_printerr ("%s: pushing move tool\n", G_STRFUNC);
#endif
space_shaded_tool = active_tool->tool_info;
gdk_keyboard_grab (canvas->window, FALSE, time);
gimp_context_set_tool (gimp_get_user_context (gimp),
move_tool_info);
tool_manager_focus_display_active (gimp, gdisp);
tool_manager_modifier_state_active (gimp, state, gdisp);
shell->space_pressed = TRUE;
}
}
}
return_val = TRUE;
break;
case GDK_Tab:
case GDK_ISO_Left_Tab:
if (! state)
{
GimpDialogFactory *dialog_factory;
dialog_factory = gimp_dialog_factory_from_name ("toolbox");
/* Hide or show all dialogs */
gimp_dialog_factories_toggle (dialog_factory, FALSE);
}
else if (! gimp_image_is_empty (gimage))
{
if (state & GDK_CONTROL_MASK)
{
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);
}
}
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 release itself or only in the resulting state
*/
if (! gimp_image_is_empty (gimage))
tool_manager_modifier_state_active (gimp, state, gdisp);
}
break;
}
tool_manager_oper_update_active (gimp,
&image_coords, state,
gdisp);
}
break;
case GDK_KEY_RELEASE:
{
GdkEventKey *kevent = (GdkEventKey *) event;
tool_manager_focus_display_active (gimp, gdisp);
switch (kevent->keyval)
{
case GDK_space:
if (shell->space_pressed)
{
#ifdef DEBUG_MOVE_PUSH
g_printerr ("%s: popping move tool\n", G_STRFUNC);
#endif
gimp_context_set_tool (gimp_get_user_context (gimp),
space_shaded_tool);
space_shaded_tool = NULL;
tool_manager_focus_display_active (gimp, gdisp);
tool_manager_modifier_state_active (gimp, state, gdisp);
shell->space_pressed = FALSE;
gdk_display_keyboard_ungrab (gdk_display, 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 (gimage))
tool_manager_modifier_state_active (gimp, state, gdisp);
}
break;
}
tool_manager_oper_update_active (gimp,
&image_coords, state,
gdisp);
}
break;
default:
break;
}
/* if we reached this point in gimp_busy mode, return now */
if (gimp->busy)
return return_val;
/* cursor update support */
if (GIMP_DISPLAY_CONFIG (gimp->config)->cursor_updating)
{
active_tool = tool_manager_get_active (gimp);
if (active_tool)
{
if ((! gimp_image_is_empty (gimage) ||
gimp_tool_control_handles_empty_image (active_tool->control)) &&
! (state & (GDK_BUTTON1_MASK |
GDK_BUTTON2_MASK |
GDK_BUTTON3_MASK)))
{
tool_manager_cursor_update_active (gimp,
&image_coords, state,
gdisp);
}
else if (gimp_image_is_empty (gimage))
{
gimp_display_shell_set_cursor (shell,
GIMP_CURSOR_BAD,
gimp_tool_control_get_tool_cursor (active_tool->control),
GIMP_CURSOR_MODIFIER_NONE);
}
}
else
{
gimp_display_shell_set_cursor (shell,
GIMP_CURSOR_BAD,
GIMP_TOOL_CURSOR_NONE,
GIMP_CURSOR_MODIFIER_NONE);
}
}
if (update_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;
}
gboolean
gimp_display_shell_hruler_button_press (GtkWidget *widget,
GdkEventButton *event,
GimpDisplayShell *shell)
{
GimpDisplay *gdisp = shell->gdisp;
if (gdisp->gimage->gimp->busy)
return TRUE;
if (event->type == GDK_BUTTON_PRESS && event->button == 1)
{
GimpToolInfo *tool_info;
tool_info = (GimpToolInfo *)
gimp_container_get_child_by_name (gdisp->gimage->gimp->tool_info_list,
"gimp-move-tool");
if (tool_info)
{
GimpTool *active_tool;
gimp_context_set_tool (gimp_get_user_context (gdisp->gimage->gimp),
tool_info);
active_tool = tool_manager_get_active (gdisp->gimage->gimp);
if (active_tool)
{
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);
gimp_move_tool_start_hguide (active_tool, gdisp);
}
}
}
return FALSE;
}
gboolean
gimp_display_shell_vruler_button_press (GtkWidget *widget,
GdkEventButton *event,
GimpDisplayShell *shell)
{
GimpDisplay *gdisp = shell->gdisp;
if (gdisp->gimage->gimp->busy)
return TRUE;
if (event->type == GDK_BUTTON_PRESS && event->button == 1)
{
GimpToolInfo *tool_info;
tool_info = (GimpToolInfo *)
gimp_container_get_child_by_name (gdisp->gimage->gimp->tool_info_list,
"gimp-move-tool");
if (tool_info)
{
GimpTool *active_tool;
gimp_context_set_tool (gimp_get_user_context (gdisp->gimage->gimp),
tool_info);
active_tool = tool_manager_get_active (gdisp->gimage->gimp);
if (active_tool)
{
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);
gimp_move_tool_start_vguide (active_tool, gdisp);
}
}
}
return FALSE;
}
gboolean
gimp_display_shell_origin_button_press (GtkWidget *widget,
GdkEventButton *event,
GimpDisplayShell *shell)
{
if (! shell->gdisp->gimage->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_qmask_button_press (GtkWidget *widget,
GdkEventButton *bevent,
GimpDisplayShell *shell)
{
if ((bevent->type == GDK_BUTTON_PRESS) && (bevent->button == 3))
{
gimp_ui_manager_ui_popup (shell->menubar_manager, "/qmask-popup",
GTK_WIDGET (shell),
NULL, NULL, NULL, NULL);
return TRUE;
}
return FALSE;
}
void
gimp_display_shell_qmask_toggled (GtkWidget *widget,
GimpDisplayShell *shell)
{
if (GTK_TOGGLE_BUTTON (widget)->active !=
gimp_image_get_qmask_state (shell->gdisp->gimage))
{
gimp_image_set_qmask_state (shell->gdisp->gimage,
GTK_TOGGLE_BUTTON (widget)->active);
gimp_image_flush (shell->gdisp->gimage);
}
}
gboolean
gimp_display_shell_nav_button_press (GtkWidget *widget,
GdkEventButton *bevent,
GimpDisplayShell *shell)
{
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>
*/
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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