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gimp/app/tools/gimpcroptool.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 <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimpimage.h"
#include "core/gimpimage-crop.h"
#include "widgets/gimphelp-ids.h"
#include "display/gimpdisplay.h"
#include "gimprectangleoptions.h"
#include "gimprectangletool.h"
#include "gimpcropoptions.h"
#include "gimpcroptool.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
static void gimp_crop_tool_rectangle_tool_iface_init (GimpRectangleToolInterface *iface);
static GObject * gimp_crop_tool_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_crop_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display);
static void gimp_crop_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static void gimp_crop_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_crop_tool_active_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display);
static void gimp_crop_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
static gboolean gimp_crop_tool_execute (GimpRectangleTool *rectangle,
gint x,
gint y,
gint w,
gint h);
static void gimp_crop_tool_notify_layer_only (GimpCropOptions *options,
GParamSpec *pspec,
GimpTool *tool);
G_DEFINE_TYPE_WITH_CODE (GimpCropTool, gimp_crop_tool, GIMP_TYPE_DRAW_TOOL,
G_IMPLEMENT_INTERFACE (GIMP_TYPE_RECTANGLE_TOOL,
gimp_crop_tool_rectangle_tool_iface_init));
#define parent_class gimp_crop_tool_parent_class
/* public functions */
void
gimp_crop_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_CROP_TOOL,
GIMP_TYPE_CROP_OPTIONS,
gimp_crop_options_gui,
0,
"gimp-crop-tool",
_("Crop"),
_("Crop Tool: Remove edge areas from image or layer"),
N_("_Crop"), "<shift>C",
NULL, GIMP_HELP_TOOL_CROP,
GIMP_STOCK_TOOL_CROP,
data);
}
static void
gimp_crop_tool_class_init (GimpCropToolClass *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->constructor = gimp_crop_tool_constructor;
object_class->set_property = gimp_rectangle_tool_set_property;
object_class->get_property = gimp_rectangle_tool_get_property;
gimp_rectangle_tool_install_properties (object_class);
tool_class->control = gimp_crop_tool_control;
tool_class->button_press = gimp_crop_tool_button_press;
tool_class->button_release = gimp_crop_tool_button_release;
tool_class->motion = gimp_rectangle_tool_motion;
tool_class->key_press = gimp_rectangle_tool_key_press;
tool_class->active_modifier_key = gimp_crop_tool_active_modifier_key;
tool_class->oper_update = gimp_rectangle_tool_oper_update;
tool_class->cursor_update = gimp_crop_tool_cursor_update;
draw_tool_class->draw = gimp_rectangle_tool_draw;
}
static void
gimp_crop_tool_rectangle_tool_iface_init (GimpRectangleToolInterface *iface)
{
iface->execute = gimp_crop_tool_execute;
}
static void
gimp_crop_tool_init (GimpCropTool *crop_tool)
{
GimpTool *tool = GIMP_TOOL (crop_tool);
GimpRectangleTool *rect_tool = GIMP_RECTANGLE_TOOL (crop_tool);
gimp_tool_control_set_wants_click (tool->control, TRUE);
gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_CROP);
gimp_rectangle_tool_set_constraint (rect_tool, TRUE);
}
static GObject *
gimp_crop_tool_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpRectangleTool *rectangle;
GimpRectangleOptions *options;
gboolean layer_only;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
gimp_rectangle_tool_constructor (object);
rectangle = GIMP_RECTANGLE_TOOL (object);
options = GIMP_RECTANGLE_TOOL_GET_OPTIONS (object);
g_signal_connect_object (options, "notify::layer-only",
G_CALLBACK (gimp_crop_tool_notify_layer_only),
object, 0);
g_object_get (options,
"layer-only", &layer_only,
NULL);
if (layer_only)
gimp_rectangle_tool_set_constraint (rectangle,
GIMP_RECTANGLE_CONSTRAIN_DRAWABLE);
else
gimp_rectangle_tool_set_constraint (rectangle,
GIMP_RECTANGLE_CONSTRAIN_IMAGE);
return object;
}
static void
gimp_crop_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display)
{
gimp_rectangle_tool_control (tool, action, display);
GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
gimp_crop_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
if (tool->display && display != tool->display)
gimp_rectangle_tool_cancel (GIMP_RECTANGLE_TOOL (tool));
gimp_rectangle_tool_button_press (tool, coords, time, state, display);
}
static void
gimp_crop_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
gimp_tool_push_status (tool, display, _("Click or press Enter to crop"));
gimp_rectangle_tool_button_release (tool, coords, time, state, release_type,
display);
}
static void
gimp_crop_tool_active_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display)
{
GIMP_TOOL_CLASS (parent_class)->active_modifier_key (tool, key, press, state,
display);
gimp_rectangle_tool_active_modifier_key (tool, key, press, state, display);
}
static void
gimp_crop_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
gimp_rectangle_tool_cursor_update (tool, coords, state, display);
gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_CROP);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static gboolean
gimp_crop_tool_execute (GimpRectangleTool *rectangle,
gint x,
gint y,
gint w,
gint h)
{
GimpTool *tool = GIMP_TOOL (rectangle);
GimpCropOptions *options = GIMP_CROP_TOOL_GET_OPTIONS (tool);
GimpImage *image;
gint max_x, max_y;
gboolean rectangle_exists;
gimp_tool_pop_status (tool, tool->display);
image = tool->display->image;
max_x = image->width;
max_y = image->height;
rectangle_exists = (x <= max_x && y <= max_y &&
x + w >= 0 && y + h >= 0 &&
w > 0 && h > 0);
if (x < 0)
{
w += x;
x = 0;
}
if (y < 0)
{
h += y;
y = 0;
}
if (x + w > max_x)
w = max_x - x;
if (y + h > max_y)
h = max_y - y;
/* if rectangle exists, crop it */
if (rectangle_exists)
{
gimp_image_crop (image, GIMP_CONTEXT (options),
x, y, w + x, h + y,
options->layer_only,
TRUE);
gimp_image_flush (image);
return TRUE;
}
return TRUE;
}
static void
gimp_crop_tool_notify_layer_only (GimpCropOptions *options,
GParamSpec *pspec,
GimpTool *tool)
{
GimpRectangleTool *rectangle = GIMP_RECTANGLE_TOOL (tool);
gboolean layer_only;
g_object_get (options,
"layer-only", &layer_only,
NULL);
if (layer_only)
gimp_rectangle_tool_set_constraint (rectangle,
GIMP_RECTANGLE_CONSTRAIN_DRAWABLE);
else
gimp_rectangle_tool_set_constraint (rectangle,
GIMP_RECTANGLE_CONSTRAIN_IMAGE);
}
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