mirror of https://github.com/GNOME/gimp.git
402 lines
14 KiB
C
402 lines
14 KiB
C
/* The GIMP -- an image manipulation program
|
|
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
|
|
*
|
|
* gimpregionselecttool.c
|
|
*
|
|
* 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 <gtk/gtk.h>
|
|
|
|
#include "libgimpwidgets/gimpwidgets.h"
|
|
|
|
#include "libgimpmath/gimpmath.h"
|
|
|
|
#include "tools-types.h"
|
|
|
|
#include "base/boundary.h"
|
|
#include "base/pixel-region.h"
|
|
|
|
#include "core/gimpchannel.h"
|
|
#include "core/gimpchannel-select.h"
|
|
#include "core/gimpimage.h"
|
|
#include "core/gimplayer-floating-sel.h"
|
|
|
|
#include "display/gimpcanvas.h"
|
|
#include "display/gimpdisplay.h"
|
|
#include "display/gimpdisplayshell.h"
|
|
#include "display/gimpdisplayshell-cursor.h"
|
|
#include "display/gimpdisplayshell-transform.h"
|
|
|
|
#include "gimpregionselecttool.h"
|
|
#include "gimpselectionoptions.h"
|
|
#include "gimptoolcontrol.h"
|
|
|
|
#include "gimp-intl.h"
|
|
|
|
|
|
static void gimp_region_select_tool_finalize (GObject *object);
|
|
|
|
static void gimp_region_select_tool_button_press (GimpTool *tool,
|
|
GimpCoords *coords,
|
|
guint32 time,
|
|
GdkModifierType state,
|
|
GimpDisplay *display);
|
|
static void gimp_region_select_tool_button_release (GimpTool *tool,
|
|
GimpCoords *coords,
|
|
guint32 time,
|
|
GdkModifierType state,
|
|
GimpDisplay *display);
|
|
static void gimp_region_select_tool_motion (GimpTool *tool,
|
|
GimpCoords *coords,
|
|
guint32 time,
|
|
GdkModifierType state,
|
|
GimpDisplay *display);
|
|
static void gimp_region_select_tool_cursor_update (GimpTool *tool,
|
|
GimpCoords *coords,
|
|
GdkModifierType state,
|
|
GimpDisplay *display);
|
|
|
|
static void gimp_region_select_tool_draw (GimpDrawTool *draw_tool);
|
|
|
|
static GdkSegment *
|
|
gimp_region_select_tool_calculate (GimpRegionSelectTool *region_sel,
|
|
GimpDisplay *display,
|
|
gint *num_segs);
|
|
|
|
|
|
G_DEFINE_TYPE (GimpRegionSelectTool, gimp_region_select_tool,
|
|
GIMP_TYPE_SELECTION_TOOL)
|
|
|
|
#define parent_class gimp_region_select_tool_parent_class
|
|
|
|
|
|
static void
|
|
gimp_region_select_tool_class_init (GimpRegionSelectToolClass *klass)
|
|
{
|
|
GObjectClass *object_class = G_OBJECT_CLASS (klass);
|
|
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
|
|
GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
|
|
|
|
object_class->finalize = gimp_region_select_tool_finalize;
|
|
|
|
tool_class->button_press = gimp_region_select_tool_button_press;
|
|
tool_class->button_release = gimp_region_select_tool_button_release;
|
|
tool_class->motion = gimp_region_select_tool_motion;
|
|
tool_class->cursor_update = gimp_region_select_tool_cursor_update;
|
|
|
|
draw_tool_class->draw = gimp_region_select_tool_draw;
|
|
}
|
|
|
|
static void
|
|
gimp_region_select_tool_init (GimpRegionSelectTool *region_select)
|
|
{
|
|
GimpTool *tool = GIMP_TOOL (region_select);
|
|
|
|
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
|
|
gimp_tool_control_set_motion_mode (tool->control, GIMP_MOTION_MODE_COMPRESS);
|
|
|
|
region_select->x = 0;
|
|
region_select->y = 0;
|
|
region_select->saved_threshold = 0.0;
|
|
|
|
region_select->region_mask = NULL;
|
|
region_select->segs = NULL;
|
|
region_select->num_segs = 0;
|
|
}
|
|
|
|
static void
|
|
gimp_region_select_tool_finalize (GObject *object)
|
|
{
|
|
GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (object);
|
|
|
|
if (region_sel->region_mask)
|
|
{
|
|
g_object_unref (region_sel->region_mask);
|
|
region_sel->region_mask = NULL;
|
|
}
|
|
|
|
if (region_sel->segs)
|
|
{
|
|
g_free (region_sel->segs);
|
|
region_sel->segs = NULL;
|
|
region_sel->num_segs = 0;
|
|
}
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gimp_region_select_tool_button_press (GimpTool *tool,
|
|
GimpCoords *coords,
|
|
guint32 time,
|
|
GdkModifierType state,
|
|
GimpDisplay *display)
|
|
{
|
|
GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (tool);
|
|
GimpSelectionOptions *options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
|
|
|
|
region_sel->x = coords->x;
|
|
region_sel->y = coords->y;
|
|
region_sel->saved_threshold = options->threshold;
|
|
|
|
gimp_tool_control_activate (tool->control);
|
|
tool->display = display;
|
|
|
|
if (gimp_selection_tool_start_edit (GIMP_SELECTION_TOOL (region_sel), coords))
|
|
return;
|
|
|
|
gimp_tool_push_status (tool, display,
|
|
_("Move the mouse to change threshold"));
|
|
|
|
/* calculate the region boundary */
|
|
region_sel->segs = gimp_region_select_tool_calculate (region_sel, display,
|
|
®ion_sel->num_segs);
|
|
|
|
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
|
|
}
|
|
|
|
static void
|
|
gimp_region_select_tool_button_release (GimpTool *tool,
|
|
GimpCoords *coords,
|
|
guint32 time,
|
|
GdkModifierType state,
|
|
GimpDisplay *display)
|
|
{
|
|
GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (tool);
|
|
GimpSelectionOptions *options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
|
|
|
|
gimp_tool_pop_status (tool, display);
|
|
|
|
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
|
|
|
|
gimp_tool_control_halt (tool->control);
|
|
|
|
/* First take care of the case where the user "cancels" the action */
|
|
if (! (state & GDK_BUTTON3_MASK))
|
|
{
|
|
gint off_x, off_y;
|
|
|
|
if (GIMP_SELECTION_TOOL (tool)->function == SELECTION_ANCHOR)
|
|
{
|
|
if (gimp_image_floating_sel (display->image))
|
|
{
|
|
/* If there is a floating selection, anchor it */
|
|
floating_sel_anchor (gimp_image_floating_sel (display->image));
|
|
}
|
|
else
|
|
{
|
|
/* Otherwise, clear the selection mask */
|
|
gimp_channel_clear (gimp_image_get_mask (display->image), NULL,
|
|
TRUE);
|
|
}
|
|
|
|
gimp_image_flush (display->image);
|
|
}
|
|
else if (region_sel->region_mask)
|
|
{
|
|
if (options->sample_merged)
|
|
{
|
|
off_x = 0;
|
|
off_y = 0;
|
|
}
|
|
else
|
|
{
|
|
GimpDrawable *drawable =
|
|
gimp_image_active_drawable (display->image);
|
|
|
|
gimp_item_offsets (GIMP_ITEM (drawable), &off_x, &off_y);
|
|
}
|
|
|
|
gimp_channel_select_channel (gimp_image_get_mask (display->image),
|
|
GIMP_REGION_SELECT_TOOL_GET_CLASS (tool)->undo_desc,
|
|
region_sel->region_mask,
|
|
off_x,
|
|
off_y,
|
|
options->operation,
|
|
options->feather,
|
|
options->feather_radius,
|
|
options->feather_radius);
|
|
|
|
|
|
gimp_image_flush (display->image);
|
|
}
|
|
}
|
|
|
|
if (region_sel->region_mask)
|
|
{
|
|
g_object_unref (region_sel->region_mask);
|
|
region_sel->region_mask = NULL;
|
|
}
|
|
|
|
if (region_sel->segs)
|
|
{
|
|
g_free (region_sel->segs);
|
|
region_sel->segs = NULL;
|
|
region_sel->num_segs = 0;
|
|
}
|
|
|
|
/* Restore the original threshold */
|
|
g_object_set (options,
|
|
"threshold", region_sel->saved_threshold,
|
|
NULL);
|
|
}
|
|
|
|
static void
|
|
gimp_region_select_tool_motion (GimpTool *tool,
|
|
GimpCoords *coords,
|
|
guint32 time,
|
|
GdkModifierType state,
|
|
GimpDisplay *display)
|
|
{
|
|
GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (tool);
|
|
GimpSelectionOptions *options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
|
|
GdkSegment *new_segs;
|
|
gint num_new_segs;
|
|
gint diff_x, diff_y;
|
|
gdouble diff;
|
|
|
|
static guint32 last_time = 0;
|
|
|
|
/* don't let the events come in too fast, ignore below a delay of 100 ms */
|
|
if (time - last_time < 100)
|
|
return;
|
|
|
|
last_time = time;
|
|
|
|
diff_x = coords->x - region_sel->x;
|
|
diff_y = coords->y - region_sel->y;
|
|
|
|
diff = ((ABS (diff_x) > ABS (diff_y)) ? diff_x : diff_y) / 2.0;
|
|
|
|
g_object_set (options,
|
|
"threshold", CLAMP (region_sel->saved_threshold + diff, 0, 255),
|
|
NULL);
|
|
|
|
/* calculate the new region boundary */
|
|
new_segs = gimp_region_select_tool_calculate (region_sel, display,
|
|
&num_new_segs);
|
|
|
|
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
|
|
|
|
/* make sure the XSegment array is freed before we assign the new one */
|
|
if (region_sel->segs)
|
|
g_free (region_sel->segs);
|
|
|
|
region_sel->segs = new_segs;
|
|
region_sel->num_segs = num_new_segs;
|
|
|
|
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
|
|
}
|
|
|
|
static void
|
|
gimp_region_select_tool_cursor_update (GimpTool *tool,
|
|
GimpCoords *coords,
|
|
GdkModifierType state,
|
|
GimpDisplay *display)
|
|
{
|
|
GimpSelectionOptions *options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
|
|
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
|
|
|
|
if (! gimp_image_coords_in_active_pickable (display->image, coords,
|
|
options->sample_merged, FALSE))
|
|
modifier = GIMP_CURSOR_MODIFIER_BAD;
|
|
|
|
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
|
|
|
|
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
|
|
}
|
|
|
|
static void
|
|
gimp_region_select_tool_draw (GimpDrawTool *draw_tool)
|
|
{
|
|
GimpRegionSelectTool *region_sel = GIMP_REGION_SELECT_TOOL (draw_tool);
|
|
|
|
if (region_sel->segs)
|
|
{
|
|
GimpDisplayShell *shell;
|
|
|
|
shell = GIMP_DISPLAY_SHELL (GIMP_TOOL (draw_tool)->display->shell);
|
|
|
|
gimp_canvas_draw_segments (GIMP_CANVAS (shell->canvas),
|
|
GIMP_CANVAS_STYLE_XOR,
|
|
region_sel->segs, region_sel->num_segs);
|
|
}
|
|
}
|
|
|
|
static GdkSegment *
|
|
gimp_region_select_tool_calculate (GimpRegionSelectTool *region_sel,
|
|
GimpDisplay *display,
|
|
gint *num_segs)
|
|
{
|
|
GimpTool *tool = GIMP_TOOL (region_sel);
|
|
GimpSelectionOptions *options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
|
|
GimpDisplayShell *shell;
|
|
GimpDrawable *drawable;
|
|
GdkSegment *segs;
|
|
BoundSeg *bsegs;
|
|
PixelRegion maskPR;
|
|
|
|
shell = GIMP_DISPLAY_SHELL (display->shell);
|
|
|
|
drawable = gimp_image_active_drawable (display->image);
|
|
|
|
gimp_display_shell_set_override_cursor (shell, GDK_WATCH);
|
|
|
|
if (region_sel->region_mask)
|
|
g_object_unref (region_sel->region_mask);
|
|
|
|
region_sel->region_mask =
|
|
GIMP_REGION_SELECT_TOOL_GET_CLASS (region_sel)->get_mask (region_sel,
|
|
display);
|
|
|
|
if (! region_sel->region_mask)
|
|
{
|
|
gimp_display_shell_unset_override_cursor (shell);
|
|
|
|
*num_segs = 0;
|
|
return NULL;
|
|
}
|
|
|
|
/* calculate and allocate a new segment array which represents the
|
|
* boundary of the contiguous region
|
|
*/
|
|
pixel_region_init (&maskPR,
|
|
gimp_drawable_get_tiles (GIMP_DRAWABLE (region_sel->region_mask)),
|
|
0, 0,
|
|
gimp_item_width (GIMP_ITEM (region_sel->region_mask)),
|
|
gimp_item_height (GIMP_ITEM (region_sel->region_mask)),
|
|
FALSE);
|
|
|
|
bsegs = boundary_find (&maskPR, BOUNDARY_WITHIN_BOUNDS,
|
|
0, 0,
|
|
gimp_item_width (GIMP_ITEM (region_sel->region_mask)),
|
|
gimp_item_height (GIMP_ITEM (region_sel->region_mask)),
|
|
BOUNDARY_HALF_WAY,
|
|
num_segs);
|
|
|
|
segs = g_new (GdkSegment, *num_segs);
|
|
|
|
gimp_display_shell_transform_segments (shell, bsegs, segs, *num_segs,
|
|
! options->sample_merged);
|
|
g_free (bsegs);
|
|
|
|
gimp_display_shell_unset_override_cursor (shell);
|
|
|
|
return segs;
|
|
}
|