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gimp/app/tools/gimpnewrectselecttool.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 "base/boundary.h"
#include "core/gimpchannel.h"
#include "core/gimpchannel-select.h"
#include "core/gimplayer-floating-sel.h"
#include "core/gimpimage.h"
#include "core/gimppickable.h"
#include "core/gimptoolinfo.h"
#include "core/gimp-utils.h"
#include "widgets/gimpdialogfactory.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpviewabledialog.h"
#include "widgets/gimpwidgets-utils.h"
#include "display/gimpcanvas.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-transform.h"
#include "gimpselectiontool.h"
#include "gimpselectionoptions.h"
#include "gimprectangletool.h"
#include "gimprectangleoptions.h"
#include "gimpnewrectselecttool.h"
#include "gimpnewrectselectoptions.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
static void gimp_new_rect_select_tool_class_init (GimpNewRectSelectToolClass *klass);
static void gimp_new_rect_select_tool_init (GimpNewRectSelectTool *rect_tool);
static void gimp_new_rect_select_tool_rectangle_tool_iface_init (GimpRectangleToolInterface *rectangle_iface);
static GObject * gimp_new_rect_select_tool_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_new_rect_select_tool_finalize (GObject *object);
static void gimp_new_rect_select_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp);
static void gimp_new_rect_select_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_new_rect_select_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_new_rect_select_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static gboolean gimp_new_rect_select_tool_execute (GimpRectangleTool *rect_tool,
gint x,
gint y,
gint w,
gint h);
static GimpSelectionToolClass *parent_class = NULL;
/* public functions */
void
gimp_new_rect_select_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_NEW_RECT_SELECT_TOOL,
GIMP_TYPE_NEW_RECT_SELECT_OPTIONS,
gimp_new_rect_select_options_gui,
0,
"gimp-new-rect-select-tool",
_("New Rect Select"),
_("Select a Rectangular part of an image"),
N_("_New Rect Select"), NULL,
NULL, GIMP_HELP_TOOL_RECT_SELECT,
GIMP_STOCK_TOOL_RECT_SELECT,
data);
}
GType
gimp_new_rect_select_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpNewRectSelectToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_new_rect_select_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpNewRectSelectTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_new_rect_select_tool_init,
};
static const GInterfaceInfo rectangle_info =
{
(GInterfaceInitFunc) gimp_new_rect_select_tool_rectangle_tool_iface_init, /* interface_init */
NULL, /* interface_finalize */
NULL /* interface_data */
};
tool_type = g_type_register_static (GIMP_TYPE_SELECTION_TOOL,
"GimpNewRectSelectTool",
&tool_info, 0);
g_type_add_interface_static (tool_type,
GIMP_TYPE_RECTANGLE_TOOL,
&rectangle_info);
}
return tool_type;
}
static void
gimp_new_rect_select_tool_class_init (GimpNewRectSelectToolClass *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_new_rect_select_tool_constructor;
object_class->dispose = gimp_rectangle_tool_dispose;
object_class->finalize = gimp_new_rect_select_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_new_rect_select_tool_control;
tool_class->button_press = gimp_new_rect_select_tool_button_press;
tool_class->button_release = gimp_new_rect_select_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_new_rect_select_tool_oper_update;
tool_class->cursor_update = gimp_rectangle_tool_cursor_update;
draw_tool_class->draw = gimp_rectangle_tool_draw;
}
static void
gimp_new_rect_select_tool_init (GimpNewRectSelectTool *new_rect_select_tool)
{
GimpTool *tool = GIMP_TOOL (new_rect_select_tool);
gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_RECT_SELECT);
}
static void
gimp_new_rect_select_tool_rectangle_tool_iface_init (GimpRectangleToolInterface *rectangle_iface)
{
rectangle_iface->execute = gimp_new_rect_select_tool_execute;
}
static GObject *
gimp_new_rect_select_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_new_rect_select_tool_finalize (GObject *object)
{
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_new_rect_select_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp)
{
GimpRectangleTool *rectangle = GIMP_RECTANGLE_TOOL (tool);
switch (action)
{
case PAUSE:
break;
case RESUME:
gimp_rectangle_tool_configure (rectangle);
break;
case HALT:
gimp_rectangle_tool_response (NULL, GIMP_RECTANGLE_MODE_EXECUTE,
rectangle);
break;
default:
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
}
static void
gimp_new_rect_select_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
if (tool->gdisp && gdisp != tool->gdisp)
gimp_rectangle_tool_response (NULL, GIMP_RECTANGLE_MODE_EXECUTE,
GIMP_RECTANGLE_TOOL (tool));
gimp_rectangle_tool_button_press (tool, coords, time, state, gdisp);
}
static void
gimp_new_rect_select_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
gimp_tool_pop_status (tool, gdisp);
gimp_tool_push_status (tool, gdisp,
_("Click or press enter to create the selection."));
gimp_rectangle_tool_button_release (tool, coords, time, state, gdisp);
}
static void
gimp_new_rect_select_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
gimp_rectangle_tool_oper_update (tool, coords, state, gdisp);
GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, gdisp);
}
/*
* This function is called if the user clicks and releases the left
* button without moving it. There are four things we might want
* to do here:
* 1) If there is an existing rectangle and we are inside it, we
* convert it into a selection.
* 2) If there is an existing rectangle and we are outside it, we
* clear it.
* 3) If there is no rectangle and we are inside the selection, we
* create a rectangle from the selection bounds.
* 4) If there is no rectangle and we are outside the selection,
* we clear the selection.
*/
static gboolean
gimp_new_rect_select_tool_execute (GimpRectangleTool *rectangle,
gint x,
gint y,
gint w,
gint h)
{
GimpTool *tool = GIMP_TOOL (rectangle);
GimpSelectionOptions *options;
GimpImage *gimage;
gint max_x, max_y;
gboolean rectangle_exists;
gboolean selected;
gint val;
GimpChannel *selection_mask;
gint x1, y1;
gint x2, y2;
guchar *val_ptr;
options = GIMP_SELECTION_OPTIONS (tool->tool_info->tool_options);
gimp_tool_pop_status (tool, tool->gdisp);
gimage = tool->gdisp->gimage;
max_x = gimage->width;
max_y = gimage->height;
selection_mask = gimp_image_get_mask (gimage);
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, turn it into a selection */
if (rectangle_exists)
{
GimpChannel *selection_mask = gimp_image_get_mask (gimage);
gimp_channel_select_rectangle (selection_mask,
x, y, w, h,
options->operation,
options->feather,
options->feather_radius,
options->feather_radius);
return TRUE;
}
if ((val_ptr = gimp_pickable_get_color_at (GIMP_PICKABLE (selection_mask),
gimp_rectangle_tool_get_pressx (rectangle),
gimp_rectangle_tool_get_pressy (rectangle))))
val = *val_ptr;
else
val = 0;
selected = (val > 127);
/* if point clicked is inside selection, set rectangle to */
/* edges of marching ants. */
if (selected)
{
GimpChannel *selection_mask = gimp_image_get_mask (gimage);
const BoundSeg *segs_in;
const BoundSeg *segs_out;
gint n_segs_in;
gint n_segs_out;
if (gimp_channel_boundary (selection_mask, &segs_in, &segs_out,
&n_segs_in, &n_segs_out,
0, 0, 0, 0))
{
x1 = y1 = x2 = y2 = 0;
if (n_segs_in > 0)
{
gint i;
x1 = segs_in[0].x1;
x2 = segs_in[0].x1;
y1 = segs_in[0].y1;
y2 = segs_in[0].y1;
for (i = 1; i < n_segs_in; i++)
{
x1 = MIN (x1, segs_in[i].x1);
x2 = MAX (x2, segs_in[i].x1);
y1 = MIN (y1, segs_in[i].y1);
y2 = MAX (y2, segs_in[i].y1);
}
}
gimp_rectangle_tool_set_x1 (rectangle, x1);
gimp_rectangle_tool_set_y1 (rectangle, y1);
gimp_rectangle_tool_set_x2 (rectangle, x2);
gimp_rectangle_tool_set_y2 (rectangle, y2);
}
else
{
gimp_rectangle_tool_set_x1 (rectangle, 0);
gimp_rectangle_tool_set_y1 (rectangle, 0);
gimp_rectangle_tool_set_x2 (rectangle, gimage->width);
gimp_rectangle_tool_set_y2 (rectangle, gimage->height);
}
gimp_rectangle_tool_set_function (rectangle, RECT_MOVING);
return FALSE;
}
/* otherwise clear the selection */
gimp_channel_clear (selection_mask, NULL, TRUE);
return TRUE;
}
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