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gimp/app/display/gimpdisplayshell-callbacks.c

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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/gimpcontrollers.h"
#include "widgets/gimpcontrollerkeyboard.h"
#include "widgets/gimpcontrollerwheel.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 "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"
/* 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 gboolean gimp_display_shell_vscrollbar_update_range (GtkRange *range,
GtkScrollType scroll,
gdouble value,
GimpDisplayShell *shell);
static gboolean gimp_display_shell_hscrollbar_update_range (GtkRange *range,
GtkScrollType scroll,
gdouble value,
GimpDisplayShell *shell);
static GdkModifierType
gimp_display_shell_key_to_state (gint key);
static GdkEvent * gimp_display_shell_compress_motion (GimpDisplayShell *shell);
static void gimp_display_shell_canvas_expose_image (GimpDisplayShell *shell,
GdkEventExpose *eevent);
static void gimp_display_shell_canvas_expose_drop_zone (GimpDisplayShell *shell,
GdkEventExpose *eevent);
/* 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_Escape:
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;
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);
g_signal_connect (shell->hsb, "change-value",
G_CALLBACK (gimp_display_shell_hscrollbar_update_range),
shell);
g_signal_connect (shell->vsb, "change-value",
G_CALLBACK (gimp_display_shell_vscrollbar_update_range),
shell);
/* 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;
/* FIXMEEEEE!!! */
/* 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;
/* When we size-allocate due to resize of the top level window,
* we want some additional logic. Don't apply it on
* zoom_on_resize though.
*/
if (shell->size_allocate_from_configure_event &&
! shell->zoom_on_resize)
{
gboolean center_horizontally;
gboolean center_vertically;
gint target_offset_x;
gint target_offset_y;
gint sw;
gint sh;
gimp_display_shell_draw_get_scaled_image_size (shell, &sw, &sh);
center_horizontally = sw <= shell->disp_width;
center_vertically = sh <= shell->disp_height;
gimp_display_shell_scroll_center_image (shell,
center_horizontally,
center_vertically);
/* This is basically the best we can do before we get an
* API for storing the image offset at the start of an
* image window resize using the mouse
*/
target_offset_x = shell->offset_x;
target_offset_y = shell->offset_y;
if (! center_horizontally)
{
target_offset_x = MAX (shell->offset_x, 0);
}
if (! center_vertically)
{
target_offset_y = MAX (shell->offset_y, 0);
}
gimp_display_shell_scroll_set_offset (shell,
target_offset_x,
target_offset_y);
}
gimp_display_shell_scroll_clamp_and_update (shell);
gimp_display_shell_scaled (shell);
/* Reset */
shell->size_allocate_from_configure_event = FALSE;
}
}
gboolean
gimp_display_shell_canvas_expose (GtkWidget *widget,
GdkEventExpose *eevent,
GimpDisplayShell *shell)
{
/* are we in destruction? */
if (! shell->display || ! shell->display->shell)
{
return TRUE;
}
if (shell->display->image)
{
gimp_display_shell_canvas_expose_image (shell, eevent);
/* Return TRUE here to avoid redrawing the image when it gets the
* keyboard focus.
*/
return TRUE;
}
else
{
gimp_display_shell_canvas_expose_drop_zone (shell, eevent);
/* Return FALSE here so that the drag indicator is drawn around
* the empty canvas during DND operations.
*/
return FALSE;
}
}
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);
}
static gboolean
gimp_display_shell_canvas_no_image_events (GtkWidget *canvas,
GdkEvent *event,
GimpDisplayShell *shell)
{
switch (event->type)
{
case GDK_BUTTON_PRESS:
{
GdkEventButton *bevent = (GdkEventButton *) event;
if (bevent->button == 3)
{
gimp_ui_manager_ui_popup (shell->popup_manager,
"/dummy-menubar/image-popup",
GTK_WIDGET (shell),
NULL, NULL, NULL, NULL);
}
}
break;
case GDK_KEY_PRESS:
{
GdkEventKey *kevent = (GdkEventKey *) event;
if (kevent->keyval == GDK_Tab ||
kevent->keyval == GDK_ISO_Left_Tab)
{
gimp_dialog_factories_toggle ();
}
}
break;
default:
break;
}
return TRUE;
}
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 gimp_display_shell_canvas_no_image_events (canvas, event, shell);
}
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;
/* focus the widget if it isn't; if the toplevel window
* already has focus, this will generate a FOCUS_IN on the
* canvas immediately, therefore we do this before logging
* the BUTTON_PRESS.
*/
if (! GTK_WIDGET_HAS_FOCUS (canvas))
gtk_widget_grab_focus (canvas);
GIMP_LOG (TOOL_EVENTS, "event (display %p): BUTTON_PRESS (%d)",
display, bevent->button);
/* if the toplevel window didn't have focus, the above
* gtk_widget_grab_focus() didn't set the canvas' HAS_FOCUS
* flags, so check for it here again.
*
* this happens in "click to focus" mode.
*/
if (! GTK_WIDGET_HAS_FOCUS (canvas))
{
/* do the things a FOCUS_IN event would do and set a flag
* preventing it from doing the same.
*/
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)
{
/* Use the last evaluated dynamic axes instead of
* the button_press event's ones because the click
* is usually at the same spot as the last motion
* event which would give us bogus dynamics.
*/
GimpCoords tmp_coords;
tmp_coords = shell->last_coords;
tmp_coords.x = image_coords.x;
tmp_coords.y = image_coords.y;
tmp_coords.pressure = image_coords.pressure;
tmp_coords.xtilt = image_coords.xtilt;
tmp_coords.ytilt = image_coords.ytilt;
image_coords = tmp_coords;
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:
{
GimpUIManager *ui_manager;
const gchar *ui_path;
state |= GDK_BUTTON3_MASK;
ui_manager = tool_manager_get_popup_active (gimp,
&image_coords, state,
display,
&ui_path);
if (ui_manager)
{
gimp_ui_manager_ui_popup (ui_manager,
ui_path,
GTK_WIDGET (shell),
NULL, NULL, NULL, NULL);
}
else
{
gimp_ui_manager_ui_popup (shell->popup_manager,
"/dummy-menubar/image-popup",
GTK_WIDGET (shell),
NULL, NULL, NULL, NULL);
}
}
break;
default:
break;
}
return_val = TRUE;
}
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;
}
return_val = TRUE;
}
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 (shell,
GIMP_ZOOM_IN,
0.0,
GIMP_ZOOM_FOCUS_BEST_GUESS);
break;
case GDK_SCROLL_DOWN:
gimp_display_shell_scale (shell,
GIMP_ZOOM_OUT,
0.0,
GIMP_ZOOM_FOCUS_BEST_GUESS);
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 = (gtk_adjustment_get_value (adj) +
((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 more motion events in case the event was a hint */
gdk_event_request_motions (mevent);
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,
active_tool->max_coord_smooth,
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,
active_tool->max_coord_smooth,
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,
time))
{
tool_manager_oper_update_active (gimp,
&image_coords, state,
shell->proximity,
display);
}
shell->last_read_motion_time = time;
}
return_val = TRUE;
}
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);
if (gimp_tool_control_get_wants_all_key_events (active_tool->control))
{
if (tool_manager_key_press_active (gimp, kevent, display))
{
/* FIXME: need to do some of the stuff below, like
* calling oper_update()
*/
return TRUE;
}
}
switch (kevent->keyval)
{
case GDK_Return:
case GDK_KP_Enter:
case GDK_ISO_Enter:
case GDK_BackSpace:
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)
{
GimpCursorPrecision precision = GIMP_CURSOR_PRECISION_PIXEL_CENTER;
active_tool = tool_manager_get_active (gimp);
if (active_tool)
precision = gimp_tool_control_get_precision (active_tool->control);
gimp_display_shell_update_cursor (shell,
precision,
(gint) display_coords.x,
(gint) display_coords.y,
image_coords.x,
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,
gtk_adjustment_get_value (adjustment) -
shell->offset_y);
}
static void
gimp_display_shell_hscrollbar_update (GtkAdjustment *adjustment,
GimpDisplayShell *shell)
{
gimp_display_shell_scroll (shell,
gtk_adjustment_get_value (adjustment) -
shell->offset_x,
0);
}
static gboolean
gimp_display_shell_hscrollbar_update_range (GtkRange *range,
GtkScrollType scroll,
gdouble value,
GimpDisplayShell *shell)
{
if (! shell->display)
return TRUE;
if ((scroll == GTK_SCROLL_JUMP) ||
(scroll == GTK_SCROLL_PAGE_BACKWARD) ||
(scroll == GTK_SCROLL_PAGE_FORWARD))
return FALSE;
gimp_display_shell_scroll_setup_hscrollbar (shell, value);
gtk_adjustment_changed (shell->hsbdata);
return FALSE;
}
static gboolean
gimp_display_shell_vscrollbar_update_range (GtkRange *range,
GtkScrollType scroll,
gdouble value,
GimpDisplayShell *shell)
{
if (! shell->display)
return TRUE;
if ((scroll == GTK_SCROLL_JUMP) ||
(scroll == GTK_SCROLL_PAGE_BACKWARD) ||
(scroll == GTK_SCROLL_PAGE_FORWARD))
return FALSE;
gimp_display_shell_scroll_setup_vscrollbar (shell, value);
gtk_adjustment_changed (shell->vsbdata);
return FALSE;
}
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;
}
static void
gimp_display_shell_canvas_expose_image (GimpDisplayShell *shell,
GdkEventExpose *eevent)
{
GdkRegion *region = NULL;
GdkRectangle *rects;
gint n_rects;
gint i;
/* 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);
}
static void
gimp_display_shell_canvas_expose_drop_zone (GimpDisplayShell *shell,
GdkEventExpose *eevent)
{
cairo_t *cr;
cr = gdk_cairo_create (shell->canvas->window);
gdk_cairo_region (cr, eevent->region);
cairo_clip (cr);
gimp_canvas_draw_drop_zone (GIMP_CANVAS (shell->canvas), cr);
cairo_destroy (cr);
}
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