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gimp/app/tools/gimpeditselectiontool.c

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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 <stdarg.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "tools-types.h"
#include "base/boundary.h"
#include "core/gimpdrawable.h"
#include "core/gimpimage.h"
#include "core/gimpimage-guides.h"
#include "core/gimpimage-mask.h"
#include "core/gimplayer.h"
#include "core/gimplist.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplay-foreach.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-selection.h"
#include "gimpeditselectiontool.h"
#include "gimpdrawtool.h"
#include "tool_manager.h"
#include "floating_sel.h"
#include "gimprc.h"
#include "path_transform.h"
#include "undo.h"
#include "libgimp/gimpintl.h"
#define EDIT_SELECT_SCROLL_LOCK FALSE
#define ARROW_VELOCITY 25
#define STATUSBAR_SIZE 128
#define GIMP_TYPE_EDIT_SELECTION_TOOL (gimp_edit_selection_tool_get_type ())
#define GIMP_EDIT_SELECTION_TOOL(obj) (GTK_CHECK_CAST ((obj), GIMP_TYPE_EDIT_SELECTION_TOOL, GimpEditSelectionTool))
#define GIMP_EDIT_SELECTION_TOOL_CLASS(klass) (GTK_CHECK_CLASS_CAST ((klass), GIMP_TYPE_EDIT_SELECTION_TOOL, GimpEditSelectionToolClass))
#define GIMP_IS_EDIT_SELECTION_TOOL(obj) (GTK_CHECK_TYPE ((obj), GIMP_TYPE_EDIT_SELECTION_TOOL))
#define GIMP_IS_EDIT_SELECTION_TOOL_CLASS(klass) (GTK_CHECK_CLASS_TYPE ((klass), GIMP_TYPE_EDIT_SELECTION_TOOL))
typedef struct _GimpEditSelectionTool GimpEditSelectionTool;
typedef struct _GimpEditSelectionToolClass GimpEditSelectionToolClass;
struct _GimpEditSelectionTool
{
GimpDrawTool parent_instance;
gint origx, origy; /* last x and y coords */
gint cumlx, cumly; /* cumulative changes to x and yed */
gint x, y; /* current x and y coords */
gint num_segs_in; /* Num seg in selection boundary */
gint num_segs_out; /* Num seg in selection boundary */
BoundSeg *segs_in; /* Pointer to the channel sel. segs */
BoundSeg *segs_out; /* Pointer to the channel sel. segs */
gint x1, y1; /* bounding box of selection mask */
gint x2, y2;
EditType edit_type; /* translate the mask or layer? */
gboolean first_move; /* we undo_freeze after the first */
guint context_id; /* for the statusbar */
};
struct _GimpEditSelectionToolClass
{
GimpDrawToolClass parent_class;
};
static GType gimp_edit_selection_tool_get_type (void);
static void gimp_edit_selection_tool_class_init (GimpEditSelectionToolClass *klass);
static void gimp_edit_selection_tool_init (GimpEditSelectionTool *edit_selection_tool);
static void gimp_edit_selection_tool_control (GimpTool *tool,
ToolAction action,
GimpDisplay *gdisp);
static void gimp_edit_selection_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_edit_selection_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
void gimp_edit_selection_tool_arrow_key (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *gdisp);
static void gimp_edit_selection_tool_draw (GimpDrawTool *tool);
static GimpDrawToolClass *parent_class = NULL;
GType
gimp_edit_selection_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpEditSelectionToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_edit_selection_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpEditSelectionTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_edit_selection_tool_init,
};
tool_type = g_type_register_static (GIMP_TYPE_DRAW_TOOL,
"GimpEditSelectionTool",
&tool_info, 0);
}
return tool_type;
}
static void
gimp_edit_selection_tool_class_init (GimpEditSelectionToolClass *klass)
{
GimpToolClass *tool_class;
GimpDrawToolClass *draw_class;
tool_class = GIMP_TOOL_CLASS (klass);
draw_class = GIMP_DRAW_TOOL_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
tool_class->control = gimp_edit_selection_tool_control;
tool_class->button_release = gimp_edit_selection_tool_button_release;
tool_class->motion = gimp_edit_selection_tool_motion;
draw_class->draw = gimp_edit_selection_tool_draw;
}
static void
gimp_edit_selection_tool_init (GimpEditSelectionTool *edit_selection_tool)
{
GimpTool *tool;
tool = GIMP_TOOL (edit_selection_tool);
tool->scroll_lock = EDIT_SELECT_SCROLL_LOCK;
tool->auto_snap_to = FALSE;
edit_selection_tool->origx = 0;
edit_selection_tool->origy = 0;
edit_selection_tool->cumlx = 0;
edit_selection_tool->cumly = 0;
edit_selection_tool->first_move = TRUE;
}
static void
gimp_edit_selection_tool_snap (GimpEditSelectionTool *edit_select,
GimpDisplay *gdisp,
gdouble x,
gdouble y)
{
gdouble x1, y1;
gdouble x2, y2;
gdouble dx, dy;
dx = x - edit_select->origx;
dy = y - edit_select->origy;
x1 = edit_select->x1 + dx;
y1 = edit_select->y1 + dy;
if (gdisp->draw_guides &&
gdisp->snap_to_guides &&
gdisp->gimage->guides)
{
gint image_x1, image_y1;
x2 = edit_select->x2 + dx;
y2 = edit_select->y2 + dy;
if (gimp_image_snap_rectangle (gdisp->gimage,
ROUND (x1), ROUND (y1),
ROUND (x2), ROUND (y2),
&image_x1, &image_y1))
{
x1 = image_x1;
y1 = image_y1;
}
}
edit_select->x = (gint) RINT (x1) - (edit_select->x1 - edit_select->origx);
edit_select->y = (gint) RINT (y1) - (edit_select->y1 - edit_select->origy);
}
void
init_edit_selection (GimpTool *tool,
GimpDisplay *gdisp,
GimpCoords *coords,
EditType edit_type)
{
GimpEditSelectionTool *edit_select;
GimpDisplayShell *shell;
gint off_x, off_y;
edit_select = g_object_new (GIMP_TYPE_EDIT_SELECTION_TOOL, NULL);
shell = GIMP_DISPLAY_SHELL (gdisp->shell);
undo_push_group_start (gdisp->gimage, LAYER_DISPLACE_UNDO);
gimp_drawable_offsets (gimp_image_active_drawable (gdisp->gimage),
&off_x, &off_y);
edit_select->x = edit_select->origx = coords->x - off_x;
edit_select->y = edit_select->origy = coords->y - off_y;
gimp_image_mask_boundary (gdisp->gimage,
&edit_select->segs_in,
&edit_select->segs_out,
&edit_select->num_segs_in,
&edit_select->num_segs_out);
/* Make a check to see if it should be a floating selection translation */
if (edit_type == EDIT_MASK_TO_LAYER_TRANSLATE &&
gimp_image_floating_sel (gdisp->gimage))
{
edit_type = EDIT_FLOATING_SEL_TRANSLATE;
}
if (edit_type == EDIT_LAYER_TRANSLATE)
{
GimpLayer *layer;
layer = gimp_image_get_active_layer (gdisp->gimage);
if (gimp_layer_is_floating_sel (layer))
edit_type = EDIT_FLOATING_SEL_TRANSLATE;
}
edit_select->edit_type = edit_type;
/* find the bounding box of the selection mask -
* this is used for the case of a EDIT_MASK_TO_LAYER_TRANSLATE,
* where the translation will result in floating the selection
* mask and translating the resulting layer
*/
gimp_drawable_mask_bounds (gimp_image_active_drawable (gdisp->gimage),
&edit_select->x1, &edit_select->y1,
&edit_select->x2, &edit_select->y2);
gimp_edit_selection_tool_snap (edit_select, gdisp,
RINT (edit_select->origx),
RINT (edit_select->origy));
GIMP_TOOL (edit_select)->gdisp = gdisp;
GIMP_TOOL (edit_select)->state = ACTIVE;
g_object_ref (G_OBJECT (edit_select));
tool_manager_push_tool (gdisp->gimage->gimp,
GIMP_TOOL (edit_select));
/* pause the current selection */
gimp_display_shell_selection_visibility (GIMP_DISPLAY_SHELL (gdisp->shell),
GIMP_SELECTION_PAUSE);
/* initialize the statusbar display */
edit_select->context_id
= gtk_statusbar_get_context_id (GTK_STATUSBAR (shell->statusbar),
"edit_select");
gtk_statusbar_push (GTK_STATUSBAR (shell->statusbar),
edit_select->context_id,
_("Move: 0, 0"));
gimp_draw_tool_start (GIMP_DRAW_TOOL (edit_select), shell->canvas->window);
}
static void
gimp_edit_selection_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpEditSelectionTool *edit_select;
GimpDisplayShell *shell;
GimpLayer *layer;
edit_select = GIMP_EDIT_SELECTION_TOOL (tool);
shell = GIMP_DISPLAY_SHELL (gdisp->shell);
/* resume the current selection and ungrab the pointer */
gimp_display_shell_selection_visibility (shell, GIMP_SELECTION_RESUME);
gdk_pointer_ungrab (time);
gdk_flush ();
gtk_statusbar_pop (GTK_STATUSBAR (shell->statusbar), edit_select->context_id);
/* Stop and free the selection core */
gimp_draw_tool_stop (GIMP_DRAW_TOOL (edit_select));
tool_manager_pop_tool (gdisp->gimage->gimp);
tool_manager_get_active (gdisp->gimage->gimp)->state = INACTIVE;
/* EDIT_MASK_TRANSLATE is performed here at movement end, not 'live' like
* the other translation types.
*/
if (edit_select->edit_type == EDIT_MASK_TRANSLATE)
{
gimp_edit_selection_tool_snap (edit_select, gdisp, coords->x, coords->y);
/* move the selection -- whether there has been net movement or not!
* (to ensure that there's something on the undo stack)
*/
gimp_image_mask_translate (gdisp->gimage,
edit_select->cumlx,
edit_select->cumly);
if (edit_select->first_move)
{
gimp_image_undo_freeze (gdisp->gimage);
edit_select->first_move = FALSE;
}
}
/* thaw the undo again */
gimp_image_undo_thaw (gdisp->gimage);
if (edit_select->cumlx == 0 && edit_select->cumly == 0)
{
/* The user either didn't actually move the selection,
or moved it around and eventually just put it back in
exactly the same spot. */
/* If no movement occured and the type is EDIT_FLOATING_SEL_TRANSLATE,
check if the layer is a floating selection. If so, anchor. */
if (edit_select->edit_type == EDIT_FLOATING_SEL_TRANSLATE)
{
layer = gimp_image_get_active_layer (gdisp->gimage);
if (gimp_layer_is_floating_sel (layer))
floating_sel_anchor (layer);
}
}
else
{
path_transform_xy (gdisp->gimage, edit_select->cumlx, edit_select->cumly);
layer = gimp_image_get_active_layer (gdisp->gimage);
gimp_viewable_invalidate_preview (GIMP_VIEWABLE (layer));
}
undo_push_group_end (gdisp->gimage);
if (state & GDK_BUTTON3_MASK) /* OPERATION CANCELLED */
{
/* Operation cancelled - undo the undo-group! */
undo_pop (gdisp->gimage);
}
gdisplays_flush ();
g_object_unref (G_OBJECT (edit_select));
}
static void
gimp_edit_selection_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpEditSelectionTool *edit_select;
GimpDisplayShell *shell;
gchar offset[STATUSBAR_SIZE];
gdouble lastmotion_x, lastmotion_y;
edit_select = GIMP_EDIT_SELECTION_TOOL (tool);
shell = GIMP_DISPLAY_SHELL (gdisp->shell);
if (tool->state != ACTIVE)
{
g_warning ("BUG: Tracking motion while !ACTIVE");
return;
}
gdk_flush ();
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
/* Perform motion compression so that we don't lag and/or waste time. */
if (gtkutil_compress_motion (shell->canvas,
&lastmotion_x,
&lastmotion_y))
{
gdisplay_untransform_coords_f (gdisp,
lastmotion_x, lastmotion_y,
&lastmotion_x, &lastmotion_y,
TRUE);
}
else
{
gint off_x, off_y;
gimp_drawable_offsets (gimp_image_active_drawable (gdisp->gimage),
&off_x, &off_y);
lastmotion_x = coords->x - off_x;
lastmotion_y = coords->y - off_y;
}
/* now do the actual move. */
gimp_edit_selection_tool_snap (edit_select,
gdisp,
RINT (lastmotion_x),
RINT (lastmotion_y));
/******************************************* adam's live move *******/
/********************************************************************/
{
gint x, y;
GimpLayer *layer;
GimpLayer *floating_layer;
GList *layer_list;
x = edit_select->x;
y = edit_select->y;
/* if there has been movement, move the selection */
if (edit_select->origx != x || edit_select->origy != y)
{
gint xoffset, yoffset;
xoffset = x - edit_select->origx;
yoffset = y - edit_select->origy;
edit_select->cumlx += xoffset;
edit_select->cumly += yoffset;
switch (edit_select->edit_type)
{
case EDIT_MASK_TRANSLATE:
/* we don't do the actual edit selection move here. */
edit_select->origx = x;
edit_select->origy = y;
break;
case EDIT_LAYER_TRANSLATE:
if ((floating_layer = gimp_image_floating_sel (gdisp->gimage)))
floating_sel_relax (floating_layer, TRUE);
/* translate the layer--and any "linked" layers as well */
for (layer_list = GIMP_LIST (gdisp->gimage->layers)->list;
layer_list;
layer_list = g_list_next (layer_list))
{
layer = (GimpLayer *) layer_list->data;
if (layer == gdisp->gimage->active_layer ||
gimp_layer_get_linked (layer))
{
gimp_layer_translate (layer, xoffset, yoffset);
}
}
if (floating_layer)
floating_sel_rigor (floating_layer, TRUE);
if (edit_select->first_move)
{
gimp_image_undo_freeze (gdisp->gimage);
edit_select->first_move = FALSE;
}
break;
case EDIT_MASK_TO_LAYER_TRANSLATE:
if (! gimp_image_mask_float (gdisp->gimage,
gimp_image_active_drawable (gdisp->gimage),
0, 0))
{
/* no region to float, abort safely */
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
return;
}
/* this is always the first move, since we switch to
EDIT_FLOATING_SEL_TRANSLATE when finished here */
gimp_image_undo_freeze (gdisp->gimage);
edit_select->first_move = FALSE;
edit_select->origx -= edit_select->x1;
edit_select->origy -= edit_select->y1;
edit_select->x2 -= edit_select->x1;
edit_select->y2 -= edit_select->y1;
edit_select->x1 = 0;
edit_select->y1 = 0;
edit_select->edit_type = EDIT_FLOATING_SEL_TRANSLATE;
break;
case EDIT_FLOATING_SEL_TRANSLATE:
layer = gimp_image_get_active_layer (gdisp->gimage);
floating_sel_relax (layer, TRUE);
gimp_layer_translate (layer, xoffset, yoffset);
floating_sel_rigor (layer, TRUE);
if (edit_select->first_move)
{
gimp_image_undo_freeze (gdisp->gimage);
edit_select->first_move = FALSE;
}
break;
default:
g_warning ("esm / BAD FALLTHROUGH");
}
}
gimp_display_flush (gdisp);
}
/********************************************************************/
/********************************************************************/
gtk_statusbar_pop (GTK_STATUSBAR (shell->statusbar), edit_select->context_id);
if (gdisp->dot_for_dot)
{
g_snprintf (offset, sizeof (offset), shell->cursor_format_str,
_("Move: "),
edit_select->cumlx,
", ",
edit_select->cumly);
}
else /* show real world units */
{
gdouble unit_factor = gimp_unit_get_factor (gdisp->gimage->unit);
g_snprintf (offset, sizeof (offset), shell->cursor_format_str,
_("Move: "),
(edit_select->cumlx) * unit_factor /
gdisp->gimage->xresolution,
", ",
(edit_select->cumly) * unit_factor /
gdisp->gimage->yresolution);
}
gtk_statusbar_push (GTK_STATUSBAR (shell->statusbar), edit_select->context_id,
offset);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static void
selection_transform_segs (GimpEditSelectionTool *edit_select,
BoundSeg *src_segs,
GdkSegment *dest_segs,
gint num_segs)
{
GimpDisplay *gdisp;
gint x, y;
gint i;
gdisp = GIMP_TOOL (edit_select)->gdisp;
for (i = 0; i < num_segs; i++)
{
gdisplay_transform_coords (gdisp,
src_segs[i].x1 + edit_select->cumlx,
src_segs[i].y1 + edit_select->cumly,
&x, &y, FALSE);
dest_segs[i].x1 = x;
dest_segs[i].y1 = y;
gdisplay_transform_coords (gdisp,
src_segs[i].x2 + edit_select->cumlx,
src_segs[i].y2 + edit_select->cumly,
&x, &y, FALSE);
dest_segs[i].x2 = x;
dest_segs[i].y2 = y;
}
}
static void
gimp_edit_selection_tool_draw (GimpDrawTool *draw_tool)
{
GimpEditSelectionTool *edit_select;
GimpTool *tool;
GimpDisplay *gdisp;
Selection *select;
GimpLayer *layer;
GList *layer_list;
gboolean floating_sel;
gint x1, y1, x2, y2;
gint x3, y3, x4, y4;
GdkSegment *segs_copy;
edit_select = GIMP_EDIT_SELECTION_TOOL (draw_tool);
tool = GIMP_TOOL (draw_tool);
gdisp = tool->gdisp;
select = GIMP_DISPLAY_SHELL (gdisp->shell)->select;
switch (edit_select->edit_type)
{
case EDIT_MASK_TRANSLATE:
layer = gimp_image_get_active_layer (gdisp->gimage);
floating_sel = gimp_layer_is_floating_sel (layer);
if (! floating_sel)
{
segs_copy = g_new (GdkSegment, edit_select->num_segs_in);
selection_transform_segs (edit_select,
edit_select->segs_in,
segs_copy,
edit_select->num_segs_in);
/* Draw the items */
gdk_draw_segments (draw_tool->win, draw_tool->gc,
segs_copy, select->num_segs_in);
g_free (segs_copy);
}
segs_copy = g_new (GdkSegment, edit_select->num_segs_out);
selection_transform_segs (edit_select,
edit_select->segs_out,
segs_copy,
edit_select->num_segs_out);
/* Draw the items */
gdk_draw_segments (draw_tool->win, draw_tool->gc,
segs_copy, select->num_segs_out);
g_free (segs_copy);
break;
case EDIT_MASK_TO_LAYER_TRANSLATE:
gimp_draw_tool_draw_rectangle (draw_tool,
FALSE,
edit_select->x1,
edit_select->y1,
edit_select->x2 - edit_select->x1,
edit_select->y2 - edit_select->y1,
TRUE);
break;
case EDIT_LAYER_TRANSLATE:
gimp_drawable_offsets (GIMP_DRAWABLE (gdisp->gimage->active_layer),
&x1, &y1);
x2 = x1 + gimp_drawable_width (GIMP_DRAWABLE (gdisp->gimage->active_layer));
y2 = y1 + gimp_drawable_height (GIMP_DRAWABLE (gdisp->gimage->active_layer));
/* Now, expand the rectangle to include all linked layers as well */
for (layer_list = GIMP_LIST (gdisp->gimage->layers)->list;
layer_list;
layer_list = g_list_next (layer_list))
{
layer = (GimpLayer *) layer_list->data;
if ((layer != gdisp->gimage->active_layer) &&
gimp_layer_get_linked (layer))
{
gimp_drawable_offsets (GIMP_DRAWABLE (layer), &x3, &y3);
x4 = x3 + gimp_drawable_width (GIMP_DRAWABLE (layer));
y4 = y3 + gimp_drawable_height (GIMP_DRAWABLE (layer));
if (x3 < x1)
x1 = x3;
if (y3 < y1)
y1 = y3;
if (x4 > x2)
x2 = x4;
if (y4 > y2)
y2 = y4;
}
}
gimp_draw_tool_draw_rectangle (draw_tool,
FALSE,
x1, y1,
x2 - x1, y2 - y1,
FALSE);
break;
case EDIT_FLOATING_SEL_TRANSLATE:
segs_copy = g_new (GdkSegment, edit_select->num_segs_in);
/* The selection segs are in image space convert these
* to display space.
* Takes care of offset/zoom etc etc.
*/
selection_transform_segs (edit_select,
edit_select->segs_in,
segs_copy,
edit_select->num_segs_in);
/* Draw the items */
gdk_draw_segments (draw_tool->win, draw_tool->gc,
segs_copy, select->num_segs_in);
g_free (segs_copy);
break;
}
}
static void
gimp_edit_selection_tool_control (GimpTool *tool,
ToolAction action,
GimpDisplay *gdisp)
{
switch (action)
{
case PAUSE:
break;
case RESUME:
break;
case HALT:
break;
default:
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
}
static gint
process_event_queue_keys (GdkEventKey *kevent,
...)
/* GdkKeyType, GdkModifierType, value ... 0
* could move this function to a more central location so it can be used
* by other tools? */
{
#define FILTER_MAX_KEYS 50
va_list argp;
GdkEvent *event;
GList *event_list = NULL;
GList *list;
guint keys[FILTER_MAX_KEYS];
GdkModifierType modifiers[FILTER_MAX_KEYS];
gint values[FILTER_MAX_KEYS];
gint i = 0, nkeys = 0, value = 0;
gboolean done = FALSE;
gboolean discard_event;
GtkWidget *orig_widget;
va_start (argp, kevent);
while (nkeys <FILTER_MAX_KEYS && (keys[nkeys] = va_arg (argp, guint)) != 0)
{
modifiers[nkeys] = va_arg (argp, GdkModifierType);
values[nkeys] = va_arg (argp, gint);
nkeys++;
}
va_end (argp);
for (i = 0; i < nkeys; i++)
{
if (kevent->keyval == keys[i] && kevent->state == modifiers[i])
value += values[i];
}
orig_widget = gtk_get_event_widget ((GdkEvent *) kevent);
while (gdk_events_pending () > 0 && ! done)
{
discard_event = FALSE;
event = gdk_event_get ();
if (! event || orig_widget != gtk_get_event_widget (event))
{
done = TRUE;
}
else
{
if (event->any.type == GDK_KEY_PRESS)
{
for (i = 0; i < nkeys; i++)
if (event->key.keyval == keys[i] &&
event->key.state == modifiers[i])
{
discard_event = TRUE;
value += values[i];
}
if (! discard_event)
done = TRUE;
}
/* should there be more types here? */
else if (event->any.type != GDK_KEY_RELEASE &&
event->any.type != GDK_MOTION_NOTIFY &&
event->any.type != GDK_EXPOSE)
done = FALSE;
}
if (! event)
; /* Do nothing */
else if (! discard_event)
event_list = g_list_prepend (event_list, event);
else
gdk_event_free (event);
}
event_list = g_list_reverse (event_list);
/* unget the unused events and free the list */
for (list = event_list; list; list = g_list_next (list))
{
gdk_event_put ((GdkEvent *) list->data);
gdk_event_free ((GdkEvent *) list->data);
}
g_list_free (event_list);
return value;
#undef FILTER_MAX_KEYS
}
void
gimp_edit_selection_tool_arrow_key (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *gdisp)
{
gint inc_x, inc_y, mask_inc_x, mask_inc_y;
GimpLayer *layer;
GimpLayer *floating_layer;
GList *layer_list;
EditType edit_type;
layer = NULL;
inc_x =
process_event_queue_keys (kevent,
GDK_Left, 0, -1,
GDK_Left, GDK_SHIFT_MASK, -1 * ARROW_VELOCITY,
GDK_Right, 0, 1,
GDK_Right, GDK_SHIFT_MASK, 1 * ARROW_VELOCITY,
0);
inc_y =
process_event_queue_keys (kevent,
GDK_Up, 0, -1,
GDK_Up, GDK_SHIFT_MASK, -1 * ARROW_VELOCITY,
GDK_Down, 0, 1,
GDK_Down, GDK_SHIFT_MASK, 1 * ARROW_VELOCITY,
0);
mask_inc_x =
process_event_queue_keys (kevent,
GDK_Left, GDK_MOD1_MASK, -1,
GDK_Left, (GDK_MOD1_MASK | GDK_SHIFT_MASK), -1 * ARROW_VELOCITY,
GDK_Right, GDK_MOD1_MASK, 1,
GDK_Right, (GDK_MOD1_MASK | GDK_SHIFT_MASK), 1 * ARROW_VELOCITY,
0);
mask_inc_y =
process_event_queue_keys (kevent,
GDK_Up, GDK_MOD1_MASK, -1,
GDK_Up, (GDK_MOD1_MASK | GDK_SHIFT_MASK), -1 * ARROW_VELOCITY,
GDK_Down, GDK_MOD1_MASK, 1,
GDK_Down, (GDK_MOD1_MASK | GDK_SHIFT_MASK), 1 * ARROW_VELOCITY,
0);
if (inc_x == 0 && inc_y == 0 && mask_inc_x == 0 && mask_inc_y == 0)
return;
undo_push_group_start (gdisp->gimage, LAYER_DISPLACE_UNDO);
if (mask_inc_x != 0 || mask_inc_y != 0)
gimp_image_mask_translate (gdisp->gimage, mask_inc_x, mask_inc_y);
if (inc_x != 0 || inc_y != 0)
{
layer = gimp_image_get_active_layer (gdisp->gimage);
if (gimp_layer_is_floating_sel (layer))
edit_type = EDIT_FLOATING_SEL_TRANSLATE;
else
edit_type = EDIT_LAYER_TRANSLATE;
switch (edit_type)
{
case EDIT_MASK_TRANSLATE:
case EDIT_MASK_TO_LAYER_TRANSLATE:
/* this won't happen */
break;
case EDIT_LAYER_TRANSLATE:
if ((floating_layer = gimp_image_floating_sel (gdisp->gimage)))
floating_sel_relax (floating_layer, TRUE);
/* translate the layer -- and any "linked" layers as well */
for (layer_list = GIMP_LIST (gdisp->gimage->layers)->list;
layer_list;
layer_list = g_list_next (layer_list))
{
layer = (GimpLayer *) layer_list->data;
if (((layer) == gdisp->gimage->active_layer) ||
gimp_layer_get_linked (layer))
{
gimp_layer_translate (layer, inc_x, inc_y);
}
}
if (floating_layer)
floating_sel_rigor (floating_layer, TRUE);
break;
case EDIT_FLOATING_SEL_TRANSLATE:
floating_sel_relax (layer, TRUE);
gimp_layer_translate (layer, inc_x, inc_y);
floating_sel_rigor (layer, TRUE);
break;
}
}
undo_push_group_end (gdisp->gimage);
gdisplays_flush ();
}
/* gtkutil_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, write the most recent motion offset
* to 'lastmotion_x' and 'lastmotion_y', then return TRUE. Otherwise
* it will return FALSE and 'lastmotion_x' / 'lastmotion_y' will be
* untouched.
*/
/* The gtkutil_compress_motion function source may be re-used under
* the XFree86-style license. <adam@gimp.org>
*/
gboolean
gtkutil_compress_motion (GtkWidget *widget,
gdouble *lastmotion_x,
gdouble *lastmotion_y)
{
GdkEvent *event;
GList *requeued_events = NULL;
GList *list;
gboolean success = FALSE;
/* Move the entire GDK event queue to a private list, filtering
* out any motion events for the desired widget. */
while (gdk_events_pending ())
{
event = gdk_event_get ();
if (!event)
{
/* Do nothing */
}
else if ((gtk_get_event_widget (event) == widget) &&
(event->any.type == GDK_MOTION_NOTIFY))
{
*lastmotion_x = event->motion.x;
*lastmotion_y = event->motion.y;
gdk_event_free (event);
success = TRUE;
}
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))
{
gdk_event_put ((GdkEvent*) list->data);
gdk_event_free ((GdkEvent*) list->data);
}
g_list_free (requeued_events);
return success;
}
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