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gimp/app/tools/gimpcroptool.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 <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimpimage.h"
#include "core/gimpimage-crop.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"
static void gimp_crop_tool_class_init (GimpCropToolClass *klass);
static void gimp_crop_tool_init (GimpCropTool *crop_tool);
static void gimp_crop_tool_rectangle_tool_iface_init (GimpRectangleToolInterface *rectangle_iface);
static GObject * gimp_crop_tool_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_crop_tool_finalize (GObject *object);
static void gimp_crop_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp);
static void gimp_crop_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static gboolean gimp_crop_tool_execute (GimpRectangleTool *rectangle,
gint x,
gint y,
gint w,
gint h);
static GimpDrawToolClass *parent_class = NULL;
/* 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 & Resize"),
_("Crop or Resize an image"),
N_("_Crop & Resize"), NULL,
NULL, GIMP_HELP_TOOL_CROP,
GIMP_STOCK_TOOL_CROP,
data);
}
GType
gimp_crop_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpCropToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_crop_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpCropTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_crop_tool_init,
};
static const GInterfaceInfo rectangle_info =
{
(GInterfaceInitFunc) gimp_crop_tool_rectangle_tool_iface_init, /* interface_init */
NULL, /* interface_finalize */
NULL /* interface_data */
};
tool_type = g_type_register_static (GIMP_TYPE_DRAW_TOOL,
"GimpCropTool",
&tool_info, 0);
g_type_add_interface_static (tool_type,
GIMP_TYPE_RECTANGLE_TOOL,
&rectangle_info);
}
return tool_type;
}
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);
parent_class = g_type_class_peek_parent (klass);
object_class->constructor = gimp_crop_tool_constructor;
object_class->dispose = gimp_rectangle_tool_dispose;
object_class->finalize = gimp_crop_tool_finalize;
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->initialize = gimp_rectangle_tool_initialize;
tool_class->control = gimp_crop_tool_control;
tool_class->button_press = gimp_rectangle_tool_button_press;
tool_class->button_release = gimp_rectangle_tool_button_release;
tool_class->motion = gimp_rectangle_tool_motion;
tool_class->key_press = gimp_rectangle_tool_key_press;
tool_class->modifier_key = gimp_rectangle_tool_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_init (GimpCropTool *crop_tool)
{
GimpTool *tool = GIMP_TOOL (crop_tool);
gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_CROP);
}
static void
gimp_crop_tool_rectangle_tool_iface_init (GimpRectangleToolInterface *rectangle_iface)
{
rectangle_iface->execute = gimp_crop_tool_execute;
}
static GObject *
gimp_crop_tool_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
gimp_rectangle_tool_constructor (object);
return object;
}
static void
gimp_crop_tool_finalize (GObject *object)
{
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_crop_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp)
{
gimp_rectangle_tool_control (tool, action, gdisp);
GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
}
static void
gimp_crop_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
gimp_rectangle_tool_cursor_update (tool, coords, state, gdisp);
gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_CROP);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
}
static gboolean
gimp_crop_tool_execute (GimpRectangleTool *rectangle,
gint x,
gint y,
gint w,
gint h)
{
GimpTool *tool = GIMP_TOOL (rectangle);
GimpCropOptions *options;
GimpImage *gimage;
gint max_x, max_y;
gboolean rectangle_exists;
options = GIMP_CROP_OPTIONS (tool->tool_info->tool_options);
gimage = tool->gdisp->gimage;
max_x = gimage->width;
max_y = gimage->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 (gimage, GIMP_CONTEXT (options),
x, y, w + x, h + y,
options->layer_only,
options->crop_mode == GIMP_CROP_MODE_CROP);
gimp_image_flush (gimage);
return TRUE;
}
return TRUE;
}
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