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PIKApp/app/tools/pikaforegroundselecttool.c

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/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* PikaForegroundSelectTool
* Copyright (C) 2005 Sven Neumann <sven@gimp.org>
*
* 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 3 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, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gegl.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libpikamath/pikamath.h"
#include "libpikabase/pikabase.h"
#include "libpikacolor/pikacolor.h"
#include "libpikawidgets/pikawidgets.h"
#include "tools-types.h"
#include "config/pikaguiconfig.h"
#include "gegl/pika-gegl-loops.h"
#include "gegl/pika-gegl-mask.h"
#include "gegl/pika-gegl-utils.h"
#include "core/pika.h"
#include "core/pikachannel-select.h"
#include "core/pikadrawable-foreground-extract.h"
#include "core/pikaerror.h"
#include "core/pikaimage.h"
#include "core/pikalayer.h"
#include "core/pikalayermask.h"
#include "core/pikaprogress.h"
#include "core/pikascanconvert.h"
#include "widgets/pikahelp-ids.h"
#include "widgets/pikawidgets-utils.h"
#include "display/pikacanvasitem.h"
#include "display/pikacanvasbufferpreview.h"
#include "display/pikadisplay.h"
#include "display/pikadisplayshell.h"
#include "display/pikatoolgui.h"
#include "pikaforegroundselecttool.h"
#include "pikaforegroundselectoptions.h"
#include "pikatoolcontrol.h"
#include "pika-intl.h"
#define FAR_OUTSIDE -10000
typedef struct _StrokeUndo StrokeUndo;
struct _StrokeUndo
{
GeglBuffer *saved_trimap;
gint trimap_x;
gint trimap_y;
PikaMattingDrawMode draw_mode;
gint stroke_width;
};
static void pika_foreground_select_tool_finalize (GObject *object);
static gboolean pika_foreground_select_tool_initialize (PikaTool *tool,
PikaDisplay *display,
GError **error);
static void pika_foreground_select_tool_control (PikaTool *tool,
PikaToolAction action,
PikaDisplay *display);
static void pika_foreground_select_tool_button_press (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonPressType press_type,
PikaDisplay *display);
static void pika_foreground_select_tool_button_release (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonReleaseType release_type,
PikaDisplay *display);
static void pika_foreground_select_tool_motion (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaDisplay *display);
static gboolean pika_foreground_select_tool_key_press (PikaTool *tool,
GdkEventKey *kevent,
PikaDisplay *display);
static void pika_foreground_select_tool_modifier_key (PikaTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
PikaDisplay *display);
static void pika_foreground_select_tool_active_modifier_key
(PikaTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
PikaDisplay *display);
static void pika_foreground_select_tool_oper_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
gboolean proximity,
PikaDisplay *display);
static void pika_foreground_select_tool_cursor_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
PikaDisplay *display);
static const gchar * pika_foreground_select_tool_can_undo
(PikaTool *tool,
PikaDisplay *display);
static const gchar * pika_foreground_select_tool_can_redo
(PikaTool *tool,
PikaDisplay *display);
static gboolean pika_foreground_select_tool_undo (PikaTool *tool,
PikaDisplay *display);
static gboolean pika_foreground_select_tool_redo (PikaTool *tool,
PikaDisplay *display);
static void pika_foreground_select_tool_options_notify (PikaTool *tool,
PikaToolOptions *options,
const GParamSpec *pspec);
static void pika_foreground_select_tool_draw (PikaDrawTool *draw_tool);
static void pika_foreground_select_tool_confirm (PikaPolygonSelectTool *poly_sel,
PikaDisplay *display);
static void pika_foreground_select_tool_halt (PikaForegroundSelectTool *fg_select);
static void pika_foreground_select_tool_commit (PikaForegroundSelectTool *fg_select);
static void pika_foreground_select_tool_set_trimap (PikaForegroundSelectTool *fg_select);
static void pika_foreground_select_tool_set_preview (PikaForegroundSelectTool *fg_select);
static void pika_foreground_select_tool_preview (PikaForegroundSelectTool *fg_select);
static void pika_foreground_select_tool_stroke_paint (PikaForegroundSelectTool *fg_select);
static void pika_foreground_select_tool_cancel_paint (PikaForegroundSelectTool *fg_select);
static void pika_foreground_select_tool_response (PikaToolGui *gui,
gint response_id,
PikaForegroundSelectTool *fg_select);
static void pika_foreground_select_tool_preview_toggled(GtkToggleButton *button,
PikaForegroundSelectTool *fg_select);
static void pika_foreground_select_tool_update_gui (PikaForegroundSelectTool *fg_select);
static StrokeUndo * pika_foreground_select_undo_new (GeglBuffer *trimap,
GArray *stroke,
PikaMattingDrawMode draw_mode,
gint stroke_width);
static void pika_foreground_select_undo_pop (StrokeUndo *undo,
GeglBuffer *trimap);
static void pika_foreground_select_undo_free (StrokeUndo *undo);
G_DEFINE_TYPE (PikaForegroundSelectTool, pika_foreground_select_tool,
PIKA_TYPE_POLYGON_SELECT_TOOL)
#define parent_class pika_foreground_select_tool_parent_class
void
pika_foreground_select_tool_register (PikaToolRegisterCallback callback,
gpointer data)
{
(* callback) (PIKA_TYPE_FOREGROUND_SELECT_TOOL,
PIKA_TYPE_FOREGROUND_SELECT_OPTIONS,
pika_foreground_select_options_gui,
PIKA_CONTEXT_PROP_MASK_FOREGROUND |
PIKA_CONTEXT_PROP_MASK_BACKGROUND,
"pika-foreground-select-tool",
_("Foreground Select"),
_("Foreground Select Tool: Select a region containing foreground objects"),
N_("F_oreground Select"), NULL,
NULL, PIKA_HELP_TOOL_FOREGROUND_SELECT,
PIKA_ICON_TOOL_FOREGROUND_SELECT,
data);
}
static void
pika_foreground_select_tool_class_init (PikaForegroundSelectToolClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
PikaToolClass *tool_class = PIKA_TOOL_CLASS (klass);
PikaDrawToolClass *draw_tool_class = PIKA_DRAW_TOOL_CLASS (klass);
PikaPolygonSelectToolClass *polygon_select_tool_class;
polygon_select_tool_class = PIKA_POLYGON_SELECT_TOOL_CLASS (klass);
object_class->finalize = pika_foreground_select_tool_finalize;
tool_class->initialize = pika_foreground_select_tool_initialize;
tool_class->control = pika_foreground_select_tool_control;
tool_class->button_press = pika_foreground_select_tool_button_press;
tool_class->button_release = pika_foreground_select_tool_button_release;
tool_class->motion = pika_foreground_select_tool_motion;
tool_class->key_press = pika_foreground_select_tool_key_press;
tool_class->modifier_key = pika_foreground_select_tool_modifier_key;
tool_class->active_modifier_key = pika_foreground_select_tool_active_modifier_key;
tool_class->oper_update = pika_foreground_select_tool_oper_update;
tool_class->cursor_update = pika_foreground_select_tool_cursor_update;
tool_class->can_undo = pika_foreground_select_tool_can_undo;
tool_class->can_redo = pika_foreground_select_tool_can_redo;
tool_class->undo = pika_foreground_select_tool_undo;
tool_class->redo = pika_foreground_select_tool_redo;
tool_class->options_notify = pika_foreground_select_tool_options_notify;
draw_tool_class->draw = pika_foreground_select_tool_draw;
polygon_select_tool_class->confirm = pika_foreground_select_tool_confirm;
}
static void
pika_foreground_select_tool_init (PikaForegroundSelectTool *fg_select)
{
PikaTool *tool = PIKA_TOOL (fg_select);
pika_tool_control_set_motion_mode (tool->control, PIKA_MOTION_MODE_EXACT);
pika_tool_control_set_scroll_lock (tool->control, FALSE);
pika_tool_control_set_preserve (tool->control, FALSE);
pika_tool_control_set_dirty_mask (tool->control,
PIKA_DIRTY_IMAGE_SIZE |
PIKA_DIRTY_ACTIVE_DRAWABLE);
pika_tool_control_set_precision (tool->control,
PIKA_CURSOR_PRECISION_SUBPIXEL);
pika_tool_control_set_tool_cursor (tool->control,
PIKA_TOOL_CURSOR_FREE_SELECT);
pika_tool_control_set_action_size (tool->control,
"tools-foreground-select-brush-size-set");
fg_select->state = MATTING_STATE_FREE_SELECT;
fg_select->grayscale_preview = NULL;
}
static void
pika_foreground_select_tool_finalize (GObject *object)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (object);
g_clear_object (&fg_select->gui);
fg_select->preview_toggle = NULL;
if (fg_select->stroke)
g_warning ("%s: stroke should be NULL at this point", G_STRLOC);
if (fg_select->mask)
g_warning ("%s: mask should be NULL at this point", G_STRLOC);
if (fg_select->trimap)
g_warning ("%s: mask should be NULL at this point", G_STRLOC);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
pika_foreground_select_tool_initialize (PikaTool *tool,
PikaDisplay *display,
GError **error)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
PikaGuiConfig *config = PIKA_GUI_CONFIG (display->pika->config);
PikaImage *image = pika_display_get_image (display);
PikaDisplayShell *shell = pika_display_get_shell (display);
GList *drawables = pika_image_get_selected_drawables (image);
PikaDrawable *drawable;
if (g_list_length (drawables) != 1)
{
if (g_list_length (drawables) > 1)
g_set_error_literal (error, PIKA_ERROR, PIKA_FAILED,
_("Cannot select from multiple layers."));
else
g_set_error_literal (error, PIKA_ERROR, PIKA_FAILED, _("No selected drawables."));
g_list_free (drawables);
return FALSE;
}
drawable = drawables->data;
g_list_free (drawables);
if (! pika_item_is_visible (PIKA_ITEM (drawable)) &&
! config->edit_non_visible)
{
g_set_error_literal (error, PIKA_ERROR, PIKA_FAILED,
_("The active layer is not visible."));
return FALSE;
}
tool->display = display;
/* enable double click for the FreeSelectTool, because it may have been
* disabled if the tool has switched to MATTING_STATE_PAINT_TRIMAP,
* in pika_foreground_select_tool_set_trimap().
*/
pika_tool_control_set_wants_double_click (tool->control, TRUE);
fg_select->state = MATTING_STATE_FREE_SELECT;
if (! fg_select->gui)
{
fg_select->gui =
pika_tool_gui_new (tool->tool_info,
NULL,
_("Dialog for foreground select"),
NULL, NULL,
pika_widget_get_monitor (GTK_WIDGET (shell)),
TRUE,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_Select"), GTK_RESPONSE_APPLY,
NULL);
pika_tool_gui_set_auto_overlay (fg_select->gui, TRUE);
g_signal_connect (fg_select->gui, "response",
G_CALLBACK (pika_foreground_select_tool_response),
fg_select);
fg_select->preview_toggle =
gtk_check_button_new_with_mnemonic (_("_Preview mask"));
gtk_box_pack_start (GTK_BOX (pika_tool_gui_get_vbox (fg_select->gui)),
fg_select->preview_toggle, FALSE, FALSE, 0);
gtk_widget_show (fg_select->preview_toggle);
g_signal_connect (fg_select->preview_toggle, "toggled",
G_CALLBACK (pika_foreground_select_tool_preview_toggled),
fg_select);
}
pika_tool_gui_set_description (fg_select->gui,
_("Select foreground pixels"));
pika_tool_gui_set_response_sensitive (fg_select->gui, GTK_RESPONSE_APPLY,
FALSE);
gtk_widget_set_sensitive (fg_select->preview_toggle, FALSE);
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (fg_select->preview_toggle),
FALSE);
pika_tool_gui_set_shell (fg_select->gui, shell);
pika_tool_gui_set_viewable (fg_select->gui, PIKA_VIEWABLE (drawable));
pika_tool_gui_show (fg_select->gui);
return TRUE;
}
static void
pika_foreground_select_tool_control (PikaTool *tool,
PikaToolAction action,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
switch (action)
{
case PIKA_TOOL_ACTION_PAUSE:
case PIKA_TOOL_ACTION_RESUME:
break;
case PIKA_TOOL_ACTION_HALT:
pika_foreground_select_tool_halt (fg_select);
break;
case PIKA_TOOL_ACTION_COMMIT:
pika_foreground_select_tool_commit (fg_select);
break;
}
PIKA_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
pika_foreground_select_tool_button_press (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonPressType press_type,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
PikaDrawTool *draw_tool = PIKA_DRAW_TOOL (tool);
if (fg_select->state == MATTING_STATE_FREE_SELECT)
{
PIKA_TOOL_CLASS (parent_class)->button_press (tool, coords, time, state,
press_type, display);
}
else
{
PikaVector2 point = pika_vector2_new (coords->x, coords->y);
pika_draw_tool_pause (draw_tool);
if (pika_draw_tool_is_active (draw_tool) && draw_tool->display != display)
pika_draw_tool_stop (draw_tool);
pika_tool_control_activate (tool->control);
fg_select->last_coords = *coords;
g_return_if_fail (fg_select->stroke == NULL);
fg_select->stroke = g_array_new (FALSE, FALSE, sizeof (PikaVector2));
g_array_append_val (fg_select->stroke, point);
if (! pika_draw_tool_is_active (draw_tool))
pika_draw_tool_start (draw_tool, display);
pika_draw_tool_resume (draw_tool);
}
}
static void
pika_foreground_select_tool_button_release (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaButtonReleaseType release_type,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
if (fg_select->state == MATTING_STATE_FREE_SELECT)
{
PIKA_TOOL_CLASS (parent_class)->button_release (tool, coords, time, state,
release_type, display);
}
else
{
pika_draw_tool_pause (PIKA_DRAW_TOOL (tool));
pika_tool_control_halt (tool->control);
if (release_type == PIKA_BUTTON_RELEASE_CANCEL)
{
pika_foreground_select_tool_cancel_paint (fg_select);
}
else
{
pika_foreground_select_tool_stroke_paint (fg_select);
if (fg_select->state == MATTING_STATE_PREVIEW_MASK)
pika_foreground_select_tool_preview (fg_select);
else
pika_foreground_select_tool_set_trimap (fg_select);
}
pika_draw_tool_resume (PIKA_DRAW_TOOL (tool));
}
}
static void
pika_foreground_select_tool_motion (PikaTool *tool,
const PikaCoords *coords,
guint32 time,
GdkModifierType state,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
if (fg_select->state == MATTING_STATE_FREE_SELECT)
{
PIKA_TOOL_CLASS (parent_class)->motion (tool, coords, time, state,
display);
}
else
{
PikaVector2 *last = &g_array_index (fg_select->stroke,
PikaVector2,
fg_select->stroke->len - 1);
pika_draw_tool_pause (PIKA_DRAW_TOOL (tool));
fg_select->last_coords = *coords;
if (last->x != (gint) coords->x || last->y != (gint) coords->y)
{
PikaVector2 point = pika_vector2_new (coords->x, coords->y);
g_array_append_val (fg_select->stroke, point);
}
pika_draw_tool_resume (PIKA_DRAW_TOOL (tool));
}
}
static gboolean
pika_foreground_select_tool_key_press (PikaTool *tool,
GdkEventKey *kevent,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
if (fg_select->state == MATTING_STATE_FREE_SELECT)
{
return PIKA_TOOL_CLASS (parent_class)->key_press (tool, kevent, display);
}
else
{
if (display != tool->display)
return FALSE;
switch (kevent->keyval)
{
case GDK_KEY_Return:
case GDK_KEY_KP_Enter:
case GDK_KEY_ISO_Enter:
if (fg_select->state == MATTING_STATE_PAINT_TRIMAP)
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (fg_select->preview_toggle),
TRUE);
else
pika_foreground_select_tool_response (fg_select->gui,
GTK_RESPONSE_APPLY, fg_select);
return TRUE;
case GDK_KEY_Escape:
if (fg_select->state == MATTING_STATE_PAINT_TRIMAP)
pika_foreground_select_tool_response (fg_select->gui,
GTK_RESPONSE_CANCEL, fg_select);
else
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (fg_select->preview_toggle),
FALSE);
return TRUE;
default:
return FALSE;
}
}
}
static void
pika_foreground_select_tool_modifier_key (PikaTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
if (fg_select->state == MATTING_STATE_FREE_SELECT)
{
PIKA_TOOL_CLASS (parent_class)->modifier_key (tool, key, press, state,
display);
}
else
{
#if 0
if (key == pika_get_toggle_behavior_mask ())
{
PikaForegroundSelectOptions *options;
options = PIKA_FOREGROUND_SELECT_TOOL_GET_OPTIONS (tool);
g_object_set (options,
"background", ! options->background,
NULL);
}
#endif
}
}
static void
pika_foreground_select_tool_active_modifier_key (PikaTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
if (fg_select->state == MATTING_STATE_FREE_SELECT)
{
PIKA_TOOL_CLASS (parent_class)->active_modifier_key (tool, key, press,
state, display);
}
}
static void
pika_foreground_select_tool_oper_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
gboolean proximity,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
PikaForegroundSelectOptions *options;
const gchar *status_stage = NULL;
const gchar *status_mode = NULL;
options = PIKA_FOREGROUND_SELECT_TOOL_GET_OPTIONS (fg_select);
PIKA_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, proximity,
display);
if (fg_select->state == MATTING_STATE_FREE_SELECT)
{
if (PIKA_SELECTION_TOOL (tool)->function == SELECTION_SELECT)
{
gint n_points;
pika_polygon_select_tool_get_points (PIKA_POLYGON_SELECT_TOOL (tool),
NULL, &n_points);
if (n_points > 2)
{
status_mode = _("Roughly outline the object to extract");
status_stage = _("press Enter to refine.");
}
else
{
status_stage = _("Roughly outline the object to extract");
}
}
}
else
{
PikaDrawTool *draw_tool = PIKA_DRAW_TOOL (tool);
pika_draw_tool_pause (draw_tool);
if (proximity)
{
fg_select->last_coords = *coords;
}
else
{
fg_select->last_coords.x = FAR_OUTSIDE;
fg_select->last_coords.y = FAR_OUTSIDE;
}
pika_draw_tool_resume (draw_tool);
if (options->draw_mode == PIKA_MATTING_DRAW_MODE_FOREGROUND)
status_mode = _("Selecting foreground");
else if (options->draw_mode == PIKA_MATTING_DRAW_MODE_BACKGROUND)
status_mode = _("Selecting background");
else
status_mode = _("Selecting unknown");
if (fg_select->state == MATTING_STATE_PAINT_TRIMAP)
status_stage = _("press Enter to preview.");
else
status_stage = _("press Escape to exit preview or Enter to apply.");
}
if (proximity && status_stage)
{
if (status_mode)
pika_tool_replace_status (tool, display, "%s, %s", status_mode, status_stage);
else
pika_tool_replace_status (tool, display, "%s", status_stage);
}
}
static void
pika_foreground_select_tool_cursor_update (PikaTool *tool,
const PikaCoords *coords,
GdkModifierType state,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
if (fg_select->state == MATTING_STATE_PAINT_TRIMAP)
{
switch (PIKA_SELECTION_TOOL (tool)->function)
{
case SELECTION_MOVE_MASK:
case SELECTION_MOVE:
case SELECTION_MOVE_COPY:
case SELECTION_ANCHOR:
return;
default:
break;
}
}
PIKA_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static const gchar *
pika_foreground_select_tool_can_undo (PikaTool *tool,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
if (fg_select->undo_stack)
{
StrokeUndo *undo = fg_select->undo_stack->data;
const gchar *desc;
if (pika_enum_get_value (PIKA_TYPE_MATTING_DRAW_MODE, undo->draw_mode,
NULL, NULL, &desc, NULL))
{
return desc;
}
}
return NULL;
}
static const gchar *
pika_foreground_select_tool_can_redo (PikaTool *tool,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
if (fg_select->redo_stack)
{
StrokeUndo *undo = fg_select->redo_stack->data;
const gchar *desc;
if (pika_enum_get_value (PIKA_TYPE_MATTING_DRAW_MODE, undo->draw_mode,
NULL, NULL, &desc, NULL))
{
return desc;
}
}
return NULL;
}
static gboolean
pika_foreground_select_tool_undo (PikaTool *tool,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
StrokeUndo *undo = fg_select->undo_stack->data;
pika_foreground_select_undo_pop (undo, fg_select->trimap);
fg_select->undo_stack = g_list_remove (fg_select->undo_stack, undo);
fg_select->redo_stack = g_list_prepend (fg_select->redo_stack, undo);
if (fg_select->state == MATTING_STATE_PREVIEW_MASK)
pika_foreground_select_tool_preview (fg_select);
else
pika_foreground_select_tool_set_trimap (fg_select);
return TRUE;
}
static gboolean
pika_foreground_select_tool_redo (PikaTool *tool,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
StrokeUndo *undo = fg_select->redo_stack->data;
pika_foreground_select_undo_pop (undo, fg_select->trimap);
fg_select->redo_stack = g_list_remove (fg_select->redo_stack, undo);
fg_select->undo_stack = g_list_prepend (fg_select->undo_stack, undo);
if (fg_select->state == MATTING_STATE_PREVIEW_MASK)
pika_foreground_select_tool_preview (fg_select);
else
pika_foreground_select_tool_set_trimap (fg_select);
return TRUE;
}
static void
pika_foreground_select_tool_options_notify (PikaTool *tool,
PikaToolOptions *options,
const GParamSpec *pspec)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
PikaForegroundSelectOptions *fg_options;
fg_options = PIKA_FOREGROUND_SELECT_OPTIONS (options);
if (! tool->display)
return;
if (! strcmp (pspec->name, "mask-color") ||
! strcmp (pspec->name, "preview-mode"))
{
if (fg_select->state == MATTING_STATE_PAINT_TRIMAP)
{
pika_foreground_select_tool_set_trimap (fg_select);
}
else if (fg_select->state == MATTING_STATE_PREVIEW_MASK)
{
pika_foreground_select_tool_set_preview (fg_select);
}
}
else if (! strcmp (pspec->name, "engine"))
{
if (fg_select->state == MATTING_STATE_PREVIEW_MASK)
{
pika_foreground_select_tool_preview (fg_select);
}
}
else if (! strcmp (pspec->name, "iterations"))
{
if (fg_options->engine == PIKA_MATTING_ENGINE_GLOBAL &&
fg_select->state == MATTING_STATE_PREVIEW_MASK)
{
pika_foreground_select_tool_preview (fg_select);
}
}
else if (! strcmp (pspec->name, "levels") ||
! strcmp (pspec->name, "active-levels"))
{
if (fg_options->engine == PIKA_MATTING_ENGINE_LEVIN &&
fg_select->state == MATTING_STATE_PREVIEW_MASK)
{
pika_foreground_select_tool_preview (fg_select);
}
}
}
static void
pika_foreground_select_tool_get_area (GeglBuffer *mask,
gint *x1,
gint *y1,
gint *x2,
gint *y2)
{
gint width;
gint height;
pika_gegl_mask_bounds (mask, x1, y1, x2, y2);
width = *x2 - *x1;
height = *y2 - *y1;
*x1 = MAX (*x1 - width / 2, 0);
*y1 = MAX (*y1 - height / 2, 0);
*x2 = MIN (*x2 + width / 2, pika_item_get_width (PIKA_ITEM (mask)));
*y2 = MIN (*y2 + height / 2, pika_item_get_height (PIKA_ITEM (mask)));
}
static void
pika_foreground_select_tool_draw (PikaDrawTool *draw_tool)
{
PikaTool *tool = PIKA_TOOL (draw_tool);
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (tool);
PikaForegroundSelectOptions *options;
options = PIKA_FOREGROUND_SELECT_TOOL_GET_OPTIONS (tool);
if (fg_select->state == MATTING_STATE_FREE_SELECT)
{
PIKA_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
return;
}
else
{
gint x = fg_select->last_coords.x;
gint y = fg_select->last_coords.y;
gdouble radius = options->stroke_width / 2.0f;
if (fg_select->stroke)
{
PikaDisplayShell *shell = pika_display_get_shell (draw_tool->display);
pika_draw_tool_add_pen (draw_tool,
(const PikaVector2 *) fg_select->stroke->data,
fg_select->stroke->len,
PIKA_CONTEXT (options),
PIKA_ACTIVE_COLOR_FOREGROUND,
options->stroke_width * shell->scale_y);
}
/* warn if the user is drawing outside of the working area */
if (FALSE)
{
gint x1, y1;
gint x2, y2;
pika_foreground_select_tool_get_area (fg_select->mask,
&x1, &y1, &x2, &y2);
if (x < x1 + radius || x > x2 - radius ||
y < y1 + radius || y > y2 - radius)
{
pika_draw_tool_add_rectangle (draw_tool, FALSE,
x1, y1,
x2 - x1, y2 - y1);
}
}
if (x > FAR_OUTSIDE && y > FAR_OUTSIDE)
pika_draw_tool_add_arc (draw_tool, FALSE,
x - radius, y - radius,
2 * radius, 2 * radius,
0.0, 2.0 * G_PI);
if (fg_select->grayscale_preview)
pika_draw_tool_add_preview (draw_tool, fg_select->grayscale_preview);
}
}
static void
pika_foreground_select_tool_confirm (PikaPolygonSelectTool *poly_sel,
PikaDisplay *display)
{
PikaForegroundSelectTool *fg_select = PIKA_FOREGROUND_SELECT_TOOL (poly_sel);
PikaImage *image = pika_display_get_image (display);
GList *drawables = pika_image_get_selected_drawables (image);
PikaDrawable *drawable;
PikaItem *item;
g_return_if_fail (g_list_length (drawables) == 1);
drawable = drawables->data;
item = PIKA_ITEM (drawable);
g_list_free (drawables);
if (drawable && fg_select->state == MATTING_STATE_FREE_SELECT)
{
PikaScanConvert *scan_convert = pika_scan_convert_new ();
const PikaVector2 *points;
gint n_points;
pika_polygon_select_tool_get_points (poly_sel, &points, &n_points);
pika_scan_convert_add_polyline (scan_convert, n_points, points, TRUE);
fg_select->trimap =
gegl_buffer_new (GEGL_RECTANGLE (pika_item_get_offset_x (item),
pika_item_get_offset_y (item),
pika_item_get_width (item),
pika_item_get_height (item)),
pika_image_get_mask_format (image));
pika_scan_convert_render_value (scan_convert, fg_select->trimap,
0, 0, 0.5);
pika_scan_convert_free (scan_convert);
fg_select->grayscale_preview =
pika_canvas_buffer_preview_new (pika_display_get_shell (display),
fg_select->trimap);
pika_foreground_select_tool_set_trimap (fg_select);
}
}
static void
pika_foreground_select_tool_halt (PikaForegroundSelectTool *fg_select)
{
PikaTool *tool = PIKA_TOOL (fg_select);
PikaDrawTool *draw_tool = PIKA_DRAW_TOOL (fg_select);
if (draw_tool->preview)
{
pika_draw_tool_remove_preview (draw_tool, fg_select->grayscale_preview);
}
g_clear_object (&fg_select->grayscale_preview);
g_clear_object (&fg_select->trimap);
g_clear_object (&fg_select->mask);
if (fg_select->undo_stack)
{
g_list_free_full (fg_select->undo_stack,
(GDestroyNotify) pika_foreground_select_undo_free);
fg_select->undo_stack = NULL;
}
if (fg_select->redo_stack)
{
g_list_free_full (fg_select->redo_stack,
(GDestroyNotify) pika_foreground_select_undo_free);
fg_select->redo_stack = NULL;
}
if (tool->display)
pika_display_shell_set_mask (pika_display_get_shell (tool->display),
NULL, 0, 0, NULL, FALSE);
pika_tool_control_set_tool_cursor (tool->control,
PIKA_TOOL_CURSOR_FREE_SELECT);
pika_tool_control_set_toggle_tool_cursor (tool->control,
PIKA_TOOL_CURSOR_FREE_SELECT);
pika_tool_control_set_toggled (tool->control, FALSE);
/* set precision to SUBPIXEL, because it may have been changed to
* PIXEL_CENTER if the tool has switched to MATTING_STATE_PAINT_TRIMAP,
* in pika_foreground_select_tool_set_trimap().
*/
pika_tool_control_set_precision (tool->control,
PIKA_CURSOR_PRECISION_SUBPIXEL);
fg_select->state = MATTING_STATE_FREE_SELECT;
/* update the undo actions / menu items */
if (tool->display)
pika_image_flush (pika_display_get_image (tool->display));
tool->display = NULL;
g_list_free (tool->drawables);
tool->drawables = NULL;
if (fg_select->gui)
pika_tool_gui_hide (fg_select->gui);
}
static void
pika_foreground_select_tool_commit (PikaForegroundSelectTool *fg_select)
{
PikaTool *tool = PIKA_TOOL (fg_select);
PikaSelectionOptions *options = PIKA_SELECTION_TOOL_GET_OPTIONS (fg_select);
if (tool->display && fg_select->state != MATTING_STATE_FREE_SELECT)
{
PikaImage *image = pika_display_get_image (tool->display);
if (fg_select->state != MATTING_STATE_PREVIEW_MASK)
pika_foreground_select_tool_preview (fg_select);
pika_channel_select_buffer (pika_image_get_mask (image),
C_("command", "Foreground Select"),
fg_select->mask,
0, /* x offset */
0, /* y offset */
options->operation,
options->feather,
options->feather_radius,
options->feather_radius);
pika_image_flush (image);
}
}
static void
pika_foreground_select_tool_set_trimap (PikaForegroundSelectTool *fg_select)
{
PikaTool *tool = PIKA_TOOL (fg_select);
PikaForegroundSelectOptions *options;
g_return_if_fail (fg_select->trimap != NULL);
options = PIKA_FOREGROUND_SELECT_TOOL_GET_OPTIONS (tool);
pika_polygon_select_tool_halt (PIKA_POLYGON_SELECT_TOOL (fg_select));
if (options->preview_mode == PIKA_MATTING_PREVIEW_MODE_ON_COLOR)
{
if (fg_select->grayscale_preview)
pika_canvas_item_set_visible (fg_select->grayscale_preview, FALSE);
pika_display_shell_set_mask (pika_display_get_shell (tool->display),
fg_select->trimap, 0, 0,
&options->mask_color, TRUE);
}
else
{
pika_display_shell_set_mask (pika_display_get_shell (tool->display),
NULL, 0, 0, NULL, FALSE);
if (fg_select->grayscale_preview)
{
g_object_set (fg_select->grayscale_preview, "buffer",
fg_select->trimap, NULL);
pika_canvas_item_set_visible (fg_select->grayscale_preview, TRUE);
}
}
pika_tool_control_set_tool_cursor (tool->control,
PIKA_TOOL_CURSOR_PAINTBRUSH);
pika_tool_control_set_toggle_tool_cursor (tool->control,
PIKA_TOOL_CURSOR_PAINTBRUSH);
pika_tool_control_set_toggled (tool->control, FALSE);
/* disable double click in paint trimap state */
pika_tool_control_set_wants_double_click (tool->control, FALSE);
/* set precision to PIXEL_CENTER in paint trimap state */
pika_tool_control_set_precision (tool->control,
PIKA_CURSOR_PRECISION_PIXEL_CENTER);
fg_select->state = MATTING_STATE_PAINT_TRIMAP;
pika_foreground_select_tool_update_gui (fg_select);
}
static void
pika_foreground_select_tool_set_preview (PikaForegroundSelectTool *fg_select)
{
PikaTool *tool = PIKA_TOOL (fg_select);
PikaForegroundSelectOptions *options;
g_return_if_fail (fg_select->mask != NULL);
options = PIKA_FOREGROUND_SELECT_TOOL_GET_OPTIONS (tool);
if (options->preview_mode == PIKA_MATTING_PREVIEW_MODE_ON_COLOR)
{
if (fg_select->grayscale_preview)
pika_canvas_item_set_visible (fg_select->grayscale_preview, FALSE);
pika_display_shell_set_mask (pika_display_get_shell (tool->display),
fg_select->mask, 0, 0,
&options->mask_color, TRUE);
}
else
{
pika_display_shell_set_mask (pika_display_get_shell (tool->display),
NULL, 0, 0, NULL, FALSE);
if (fg_select->grayscale_preview)
{
g_object_set (fg_select->grayscale_preview, "buffer",
fg_select->mask, NULL);
pika_canvas_item_set_visible (fg_select->grayscale_preview, TRUE);
}
}
pika_tool_control_set_tool_cursor (tool->control,
PIKA_TOOL_CURSOR_PAINTBRUSH);
pika_tool_control_set_toggle_tool_cursor (tool->control,
PIKA_TOOL_CURSOR_PAINTBRUSH);
pika_tool_control_set_toggled (tool->control, FALSE);
fg_select->state = MATTING_STATE_PREVIEW_MASK;
pika_foreground_select_tool_update_gui (fg_select);
}
static void
pika_foreground_select_tool_preview (PikaForegroundSelectTool *fg_select)
{
PikaTool *tool = PIKA_TOOL (fg_select);
PikaForegroundSelectOptions *options;
PikaImage *image = pika_display_get_image (tool->display);
GList *drawables = pika_image_get_selected_drawables (image);
PikaDrawable *drawable;
g_return_if_fail (g_list_length (drawables) == 1);
drawable = drawables->data;
g_list_free (drawables);
options = PIKA_FOREGROUND_SELECT_TOOL_GET_OPTIONS (tool);
g_clear_object (&fg_select->mask);
fg_select->mask = pika_drawable_foreground_extract (drawable,
options->engine,
options->iterations,
options->levels,
options->active_levels,
fg_select->trimap,
PIKA_PROGRESS (fg_select));
pika_foreground_select_tool_set_preview (fg_select);
}
static void
pika_foreground_select_tool_stroke_paint (PikaForegroundSelectTool *fg_select)
{
PikaForegroundSelectOptions *options;
PikaScanConvert *scan_convert;
StrokeUndo *undo;
gint width;
gdouble opacity;
options = PIKA_FOREGROUND_SELECT_TOOL_GET_OPTIONS (fg_select);
g_return_if_fail (fg_select->stroke != NULL);
width = ROUND ((gdouble) options->stroke_width);
if (fg_select->redo_stack)
{
g_list_free_full (fg_select->redo_stack,
(GDestroyNotify) pika_foreground_select_undo_free);
fg_select->redo_stack = NULL;
}
undo = pika_foreground_select_undo_new (fg_select->trimap,
fg_select->stroke,
options->draw_mode, width);
if (! undo)
{
g_array_free (fg_select->stroke, TRUE);
fg_select->stroke = NULL;
return;
}
fg_select->undo_stack = g_list_prepend (fg_select->undo_stack, undo);
scan_convert = pika_scan_convert_new ();
if (fg_select->stroke->len == 1)
{
PikaVector2 points[2];
points[0] = points[1] = ((PikaVector2 *) fg_select->stroke->data)[0];
points[1].x += 0.01;
points[1].y += 0.01;
pika_scan_convert_add_polyline (scan_convert, 2, points, FALSE);
}
else
{
pika_scan_convert_add_polyline (scan_convert,
fg_select->stroke->len,
(PikaVector2 *) fg_select->stroke->data,
FALSE);
}
pika_scan_convert_stroke (scan_convert,
width,
PIKA_JOIN_ROUND, PIKA_CAP_ROUND, 10.0,
0.0, NULL);
if (options->draw_mode == PIKA_MATTING_DRAW_MODE_FOREGROUND)
opacity = 1.0;
else if (options->draw_mode == PIKA_MATTING_DRAW_MODE_BACKGROUND)
opacity = 0.0;
else
opacity = 0.5;
pika_scan_convert_compose_value (scan_convert, fg_select->trimap,
0, 0,
opacity);
pika_scan_convert_free (scan_convert);
g_array_free (fg_select->stroke, TRUE);
fg_select->stroke = NULL;
/* update the undo actions / menu items */
pika_image_flush (pika_display_get_image (PIKA_TOOL (fg_select)->display));
}
static void
pika_foreground_select_tool_cancel_paint (PikaForegroundSelectTool *fg_select)
{
g_return_if_fail (fg_select->stroke != NULL);
g_array_free (fg_select->stroke, TRUE);
fg_select->stroke = NULL;
}
static void
pika_foreground_select_tool_response (PikaToolGui *gui,
gint response_id,
PikaForegroundSelectTool *fg_select)
{
PikaTool *tool = PIKA_TOOL (fg_select);
switch (response_id)
{
case GTK_RESPONSE_APPLY:
pika_tool_control (tool, PIKA_TOOL_ACTION_COMMIT, tool->display);
break;
default:
pika_tool_control (tool, PIKA_TOOL_ACTION_HALT, tool->display);
break;
}
}
static void
pika_foreground_select_tool_preview_toggled (GtkToggleButton *button,
PikaForegroundSelectTool *fg_select)
{
if (fg_select->state != MATTING_STATE_FREE_SELECT)
{
if (gtk_toggle_button_get_active (button))
{
if (fg_select->state == MATTING_STATE_PAINT_TRIMAP)
pika_foreground_select_tool_preview (fg_select);
}
else
{
if (fg_select->state == MATTING_STATE_PREVIEW_MASK)
pika_foreground_select_tool_set_trimap (fg_select);
}
}
}
static void
pika_foreground_select_tool_update_gui (PikaForegroundSelectTool *fg_select)
{
if (fg_select->state == MATTING_STATE_PAINT_TRIMAP)
{
pika_tool_gui_set_description (fg_select->gui, _("Paint mask"));
}
else if (fg_select->state == MATTING_STATE_PREVIEW_MASK)
{
pika_tool_gui_set_description (fg_select->gui, _("Preview"));
}
pika_tool_gui_set_response_sensitive (fg_select->gui, GTK_RESPONSE_APPLY,
TRUE);
gtk_widget_set_sensitive (fg_select->preview_toggle, TRUE);
}
static StrokeUndo *
pika_foreground_select_undo_new (GeglBuffer *trimap,
GArray *stroke,
PikaMattingDrawMode draw_mode,
gint stroke_width)
{
StrokeUndo *undo;
const GeglRectangle *extent;
gint x1, y1, x2, y2;
gint width, height;
gint i;
extent = gegl_buffer_get_extent (trimap);
x1 = G_MAXINT;
y1 = G_MAXINT;
x2 = G_MININT;
y2 = G_MININT;
for (i = 0; i < stroke->len; i++)
{
PikaVector2 *point = &g_array_index (stroke, PikaVector2, i);
x1 = MIN (x1, floor (point->x));
y1 = MIN (y1, floor (point->y));
x2 = MAX (x2, ceil (point->x));
y2 = MAX (y2, ceil (point->y));
}
x1 -= (stroke_width + 1) / 2;
y1 -= (stroke_width + 1) / 2;
x2 += (stroke_width + 1) / 2;
y2 += (stroke_width + 1) / 2;
x1 = MAX (x1, extent->x);
y1 = MAX (y1, extent->y);
x2 = MIN (x2, extent->x + extent->width);
y2 = MIN (y2, extent->x + extent->height);
width = x2 - x1;
height = y2 - y1;
if (width <= 0 || height <= 0)
return NULL;
undo = g_slice_new0 (StrokeUndo);
undo->saved_trimap = gegl_buffer_new (GEGL_RECTANGLE (x1, y1, width, height),
gegl_buffer_get_format (trimap));
pika_gegl_buffer_copy (
trimap, GEGL_RECTANGLE (x1, y1, width, height),
GEGL_ABYSS_NONE,
undo->saved_trimap, NULL);
undo->trimap_x = x1;
undo->trimap_y = y1;
undo->draw_mode = draw_mode;
undo->stroke_width = stroke_width;
return undo;
}
static void
pika_foreground_select_undo_pop (StrokeUndo *undo,
GeglBuffer *trimap)
{
GeglBuffer *buffer;
gint width, height;
buffer = pika_gegl_buffer_dup (undo->saved_trimap);
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
pika_gegl_buffer_copy (trimap,
GEGL_RECTANGLE (undo->trimap_x, undo->trimap_y,
width, height),
GEGL_ABYSS_NONE,
undo->saved_trimap, NULL);
pika_gegl_buffer_copy (buffer,
GEGL_RECTANGLE (undo->trimap_x, undo->trimap_y,
width, height),
GEGL_ABYSS_NONE,
trimap, NULL);
g_object_unref (buffer);
}
static void
pika_foreground_select_undo_free (StrokeUndo *undo)
{
g_clear_object (&undo->saved_trimap);
g_slice_free (StrokeUndo, undo);
}
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