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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 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 <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp.h"
#include "core/gimpimage.h"
#include "core/gimpimage-crop.h"
#include "core/gimpitem.h"
#include "core/gimptoolinfo.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"
struct _GimpCropTool
{
GimpDrawTool parent_instance;
GimpImage *current_image;
};
struct _GimpCropToolClass
{
GimpDrawToolClass parent_class;
};
static void gimp_crop_tool_rectangle_tool_iface_init (GimpRectangleToolInterface *iface);
static void gimp_crop_tool_constructed (GObject *object);
static void gimp_crop_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display);
static void gimp_crop_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display);
static void gimp_crop_tool_button_release (GimpTool *tool,
const 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,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
static void gimp_crop_tool_draw (GimpDrawTool *draw_tool);
static gboolean gimp_crop_tool_execute (GimpRectangleTool *rectangle,
gint x,
gint y,
gint w,
gint h);
static void gimp_crop_tool_update_option_defaults (GimpCropTool *crop_tool,
gboolean ignore_pending);
static GimpRectangleConstraint
gimp_crop_tool_get_constraint (GimpCropTool *crop_tool);
static void gimp_crop_tool_options_notify (GimpCropOptions *options,
GParamSpec *pspec,
GimpCropTool *crop_tool);
static void gimp_crop_tool_image_changed (GimpCropTool *crop_tool,
GimpImage *image,
GimpContext *context);
static void gimp_crop_tool_image_size_changed (GimpCropTool *crop_tool);
static void gimp_crop_tool_cancel (GimpRectangleTool *rect_tool);
static gboolean gimp_crop_tool_rectangle_change_complete (GimpRectangleTool *rect_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->constructed = gimp_crop_tool_constructed;
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_crop_tool_draw;
}
static void
gimp_crop_tool_rectangle_tool_iface_init (GimpRectangleToolInterface *iface)
{
iface->execute = gimp_crop_tool_execute;
iface->cancel = gimp_crop_tool_cancel;
iface->rectangle_change_complete = gimp_crop_tool_rectangle_change_complete;
}
static void
gimp_crop_tool_init (GimpCropTool *crop_tool)
{
GimpTool *tool = GIMP_TOOL (crop_tool);
gimp_rectangle_tool_init (GIMP_RECTANGLE_TOOL (crop_tool));
gimp_tool_control_set_wants_click (tool->control, TRUE);
gimp_tool_control_set_precision (tool->control,
GIMP_CURSOR_PRECISION_PIXEL_BORDER);
gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_CROP);
crop_tool->current_image = NULL;
}
static void
gimp_crop_tool_constructed (GObject *object)
{
GimpCropTool *crop_tool = GIMP_CROP_TOOL (object);
GimpCropOptions *options;
GimpContext *gimp_context;
GimpToolInfo *tool_info;
if (G_OBJECT_CLASS (parent_class)->constructed)
G_OBJECT_CLASS (parent_class)->constructed (object);
gimp_rectangle_tool_constructor (object);
g_object_get (object,
"tool-info", &tool_info,
NULL);
gimp_context = gimp_get_user_context (tool_info->gimp);
g_signal_connect_object (gimp_context, "image-changed",
G_CALLBACK (gimp_crop_tool_image_changed),
crop_tool,
G_CONNECT_SWAPPED);
/* Make sure we are connected to "size-changed" for the initial
* image.
*/
gimp_crop_tool_image_changed (crop_tool,
gimp_context_get_image (gimp_context),
gimp_context);
options = GIMP_CROP_TOOL_GET_OPTIONS (object);
g_signal_connect_object (options, "notify::layer-only",
G_CALLBACK (gimp_crop_tool_options_notify),
object, 0);
g_signal_connect_object (options, "notify::allow-growing",
G_CALLBACK (gimp_crop_tool_options_notify),
object, 0);
gimp_rectangle_tool_set_constraint (GIMP_RECTANGLE_TOOL (object),
gimp_crop_tool_get_constraint (crop_tool));
gimp_crop_tool_update_option_defaults (crop_tool, FALSE);
}
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,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
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,
const 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,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
gimp_rectangle_tool_cursor_update (tool, coords, state, display);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
gimp_crop_tool_draw (GimpDrawTool *draw_tool)
{
gimp_rectangle_tool_draw (draw_tool, NULL);
}
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 = gimp_display_get_image (tool->display);
gimp_tool_pop_status (tool, tool->display);
/* if rectangle exists, crop it */
if (w > 0 && h > 0)
{
if (options->layer_only)
{
GimpLayer *layer = gimp_image_get_active_layer (image);
if (! layer)
{
gimp_tool_message_literal (tool, tool->display,
_("There is no active layer to crop."));
return FALSE;
}
if (gimp_item_is_content_locked (GIMP_ITEM (layer)))
{
gimp_tool_message_literal (tool, tool->display,
_("The active layer's pixels are locked."));
return FALSE;
}
}
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;
}
/**
* gimp_crop_tool_rectangle_change_complete:
* @rectangle:
*
* Returns:
**/
static gboolean
gimp_crop_tool_rectangle_change_complete (GimpRectangleTool *rectangle)
{
gimp_crop_tool_update_option_defaults (GIMP_CROP_TOOL (rectangle), FALSE);
return TRUE;
}
/**
* gimp_crop_tool_update_option_defaults:
* @crop_tool:
* @ignore_pending: %TRUE to ignore any pending crop rectangle.
*
* Sets the default Fixed: Aspect ratio and Fixed: Size option
* properties.
*/
static void
gimp_crop_tool_update_option_defaults (GimpCropTool *crop_tool,
gboolean ignore_pending)
{
GimpTool *tool;
GimpRectangleTool *rectangle_tool;
GimpRectangleOptions *rectangle_options;
tool = GIMP_TOOL (crop_tool);
rectangle_tool = GIMP_RECTANGLE_TOOL (tool);
rectangle_options = GIMP_RECTANGLE_TOOL_GET_OPTIONS (rectangle_tool);
if (tool->display != NULL && !ignore_pending)
{
/* There is a pending rectangle and we should not ignore it, so
* set default Fixed: Aspect ratio to the same as the current
* pending rectangle width/height.
*/
gimp_rectangle_tool_pending_size_set (rectangle_tool,
G_OBJECT (rectangle_options),
"default-aspect-numerator",
"default-aspect-denominator");
g_object_set (G_OBJECT (rectangle_options),
"use-string-current", TRUE,
NULL);
}
else
{
/* There is no pending rectangle, set default Fixed: Aspect
* ratio to that of the current image/layer.
*/
gimp_rectangle_tool_constraint_size_set (rectangle_tool,
G_OBJECT (rectangle_options),
"default-aspect-numerator",
"default-aspect-denominator");
g_object_set (G_OBJECT (rectangle_options),
"use-string-current", FALSE,
NULL);
}
}
static GimpRectangleConstraint
gimp_crop_tool_get_constraint (GimpCropTool *crop_tool)
{
GimpCropOptions *crop_options = GIMP_CROP_TOOL_GET_OPTIONS (crop_tool);
if (crop_options->allow_growing)
{
return GIMP_RECTANGLE_CONSTRAIN_NONE;
}
else
{
return crop_options->layer_only ? GIMP_RECTANGLE_CONSTRAIN_DRAWABLE :
GIMP_RECTANGLE_CONSTRAIN_IMAGE;
}
}
static void
gimp_crop_tool_options_notify (GimpCropOptions *options,
GParamSpec *pspec,
GimpCropTool *crop_tool)
{
gimp_rectangle_tool_set_constraint (GIMP_RECTANGLE_TOOL (crop_tool),
gimp_crop_tool_get_constraint (crop_tool));
}
static void
gimp_crop_tool_image_changed (GimpCropTool *crop_tool,
GimpImage *image,
GimpContext *context)
{
if (crop_tool->current_image)
{
g_signal_handlers_disconnect_by_func (crop_tool->current_image,
gimp_crop_tool_image_size_changed,
NULL);
}
if (image)
{
g_signal_connect_object (image, "size-changed",
G_CALLBACK (gimp_crop_tool_image_size_changed),
crop_tool,
G_CONNECT_SWAPPED);
}
crop_tool->current_image = image;
gimp_crop_tool_update_option_defaults (GIMP_CROP_TOOL (crop_tool),
FALSE);
}
static void
gimp_crop_tool_image_size_changed (GimpCropTool *crop_tool)
{
gimp_crop_tool_update_option_defaults (crop_tool,
FALSE);
}
static void
gimp_crop_tool_cancel (GimpRectangleTool *rect_tool)
{
gimp_crop_tool_update_option_defaults (GIMP_CROP_TOOL (rect_tool),
TRUE);
}
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