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gimp/app/tools/gimprectangletool.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 <gdk/gdkkeysyms.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpconfig/gimpconfig.h"
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimpchannel.h"
#include "core/gimpchannel-select.h"
#include "core/gimpimage.h"
#include "core/gimpimage-crop.h"
#include "core/gimptoolinfo.h"
#include "core/gimp-utils.h"
#include "widgets/gimphelp-ids.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 "gimptoolcontrol.h"
#include "gimp-intl.h"
/* speed of key movement */
#define ARROW_VELOCITY 25
static void gimp_rectangle_tool_class_init (GimpRectangleToolClass *klass);
static void gimp_rectangle_tool_init (GimpRectangleTool *rectangle_tool);
static void gimp_rectangle_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp);
static void gimp_rectangle_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_rectangle_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_rectangle_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static gboolean gimp_rectangle_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *gdisp);
static void gimp_rectangle_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_rectangle_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_rectangle_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_rectangle_tool_draw (GimpDrawTool *draw_tool);
/* Rectangle helper functions */
static void rectangle_recalc (GimpRectangleTool *rectangle);
static void rectangle_tool_start (GimpRectangleTool *rectangle);
/* Rectangle dialog functions */
static void rectangle_info_update (GimpRectangleTool *rectangle);
static void rectangle_response (GtkWidget *widget,
gint response_id,
GimpRectangleTool *rectangle);
static void rectangle_selection_callback (GtkWidget *widget,
GimpRectangleTool *rectangle);
static void rectangle_automatic_callback (GtkWidget *widget,
GimpRectangleTool *rectangle);
static void rectangle_origin_changed (GtkWidget *widget,
GimpRectangleTool *rectangle);
static void rectangle_size_changed (GtkWidget *widget,
GimpRectangleTool *rectangle);
static void rectangle_aspect_changed (GtkWidget *widget,
GimpRectangleTool *rectangle);
static void rectangle_tool_execute (GimpRectangleTool *rect_tool,
gint x,
gint y,
gint w,
gint h);
static void gimp_rectangle_tool_real_execute (GimpRectangleTool *rect_tool,
gint x,
gint y,
gint w,
gint h);
static GimpDrawToolClass *parent_class = NULL;
/* public functions */
GType
gimp_rectangle_tool_get_type (void)
{
static GType tool_type = 0;
if (! tool_type)
{
static const GTypeInfo tool_info =
{
sizeof (GimpRectangleToolClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_rectangle_tool_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpRectangleTool),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_rectangle_tool_init,
};
tool_type = g_type_register_static (GIMP_TYPE_SELECTION_TOOL,
"GimpRectangleTool",
&tool_info, 0);
}
return tool_type;
}
static void
gimp_rectangle_tool_class_init (GimpRectangleToolClass *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);
tool_class->control = gimp_rectangle_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_rectangle_tool_cursor_update;
draw_tool_class->draw = gimp_rectangle_tool_draw;
klass->execute = gimp_rectangle_tool_real_execute;
}
static void
gimp_rectangle_tool_init (GimpRectangleTool *rectangle_tool)
{
GimpTool *tool = GIMP_TOOL (rectangle_tool);
gimp_tool_control_set_preserve (tool->control, FALSE);
gimp_tool_control_set_dirty_mask (tool->control, GIMP_DIRTY_IMAGE_SIZE);
}
static void
gimp_rectangle_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp)
{
GimpRectangleTool *rectangle = GIMP_RECTANGLE_TOOL (tool);
switch (action)
{
case PAUSE:
break;
case RESUME:
rectangle_recalc (rectangle);
break;
case HALT:
rectangle_response (NULL, GTK_RESPONSE_CANCEL, rectangle);
break;
default:
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
}
static void
gimp_rectangle_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpRectangleTool *rectangle = GIMP_RECTANGLE_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
GimpRectangleOptions *options;
options = GIMP_RECTANGLE_OPTIONS (tool->tool_info->tool_options);
if (gdisp != tool->gdisp)
{
if (gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_stop (draw_tool);
rectangle->function = RECT_CREATING;
gimp_tool_control_set_snap_offsets (tool->control, 0, 0, 0, 0);
tool->gdisp = gdisp;
rectangle->x2 = rectangle->x1 = ROUND (coords->x);
rectangle->y2 = rectangle->y1 = ROUND (coords->y);
rectangle_tool_start (rectangle);
}
rectangle->lastx = rectangle->startx = ROUND (coords->x);
rectangle->lasty = rectangle->starty = ROUND (coords->y);
gimp_tool_control_activate (tool->control);
}
static void
gimp_rectangle_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpRectangleTool *rectangle = GIMP_RECTANGLE_TOOL (tool);
GimpRectangleOptions *options;
options = GIMP_RECTANGLE_OPTIONS (tool->tool_info->tool_options);
gimp_tool_control_halt (tool->control);
gimp_tool_pop_status (tool);
if (! (state & GDK_BUTTON3_MASK))
{
if (rectangle->function == RECT_CREATING)
{
if ( (rectangle->lastx == rectangle->startx) &&
(rectangle->lasty == rectangle->starty))
{
rectangle_response (NULL, GTK_RESPONSE_CANCEL, rectangle);
}
}
else if (rectangle->function == RECT_EXECUTING)
{
rectangle_response (NULL, GIMP_RECTANGLE_MODE_EXECUTE, rectangle);
}
rectangle_info_update (rectangle);
}
}
static void
gimp_rectangle_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpRectangleTool *rectangle = GIMP_RECTANGLE_TOOL (tool);
gint x1, y1, x2, y2;
gint curx, cury;
gint inc_x, inc_y;
gint min_x, min_y, max_x, max_y;
/* This is the only case when the motion events should be ignored--
we're just waiting for the button release event to execute */
if (rectangle->function == RECT_EXECUTING)
return;
curx = ROUND (coords->x);
cury = ROUND (coords->y);
x1 = rectangle->startx;
y1 = rectangle->starty;
x2 = curx;
y2 = cury;
inc_x = (x2 - x1);
inc_y = (y2 - y1);
/* If there have been no changes... return */
if (rectangle->lastx == x2 && rectangle->lasty == y2)
return;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
min_x = min_y = 0;
max_x = gdisp->gimage->width;
max_y = gdisp->gimage->height;
switch (rectangle->function)
{
case RECT_CREATING:
rectangle->change_aspect_ratio = TRUE;
break;
case RECT_RESIZING_LEFT:
x1 = rectangle->x1 + inc_x;
y1 = rectangle->y1 + inc_y;
x2 = MAX (x1, rectangle->x2);
y2 = MAX (y1, rectangle->y2);
rectangle->startx = curx;
rectangle->starty = cury;
break;
case RECT_RESIZING_RIGHT:
x2 = rectangle->x2 + inc_x;
y2 = rectangle->y2 + inc_y;
x1 = MIN (rectangle->x1, x2);
y1 = MIN (rectangle->y1, y2);
rectangle->startx = curx;
rectangle->starty = cury;
break;
case RECT_MOVING:
x1 = rectangle->x1 + inc_x;
x2 = rectangle->x2 + inc_x;
y1 = rectangle->y1 + inc_y;
y2 = rectangle->y2 + inc_y;
rectangle->startx = curx;
rectangle->starty = cury;
break;
}
/* make sure that the coords are in bounds */
rectangle->x1 = MIN (x1, x2);
rectangle->y1 = MIN (y1, y2);
rectangle->x2 = MAX (x1, x2);
rectangle->y2 = MAX (y1, y2);
rectangle->lastx = curx;
rectangle->lasty = cury;
/* recalculate the coordinates for rectangle_draw based on the new values */
rectangle_recalc (rectangle);
switch (rectangle->function)
{
case RECT_RESIZING_LEFT:
gimp_tool_control_set_snap_offsets (tool->control,
rectangle->x1 - coords->x,
rectangle->y1 - coords->y,
0, 0);
break;
case RECT_RESIZING_RIGHT:
gimp_tool_control_set_snap_offsets (tool->control,
rectangle->x2 - coords->x,
rectangle->y2 - coords->y,
0, 0);
break;
case RECT_MOVING:
gimp_tool_control_set_snap_offsets (tool->control,
rectangle->x1 - coords->x,
rectangle->y1 - coords->y,
rectangle->x2 - rectangle->x1,
rectangle->y2 - rectangle->y1);
break;
default:
break;
}
if (rectangle->function == RECT_CREATING ||
rectangle->function == RECT_RESIZING_LEFT ||
rectangle->function == RECT_RESIZING_RIGHT)
{
gimp_tool_pop_status (tool);
gimp_tool_push_status_coords (tool,
_("Rectangle: "),
rectangle->x2 - rectangle->x1,
" x ",
rectangle->y2 - rectangle->y1);
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static gboolean
gimp_rectangle_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *gdisp)
{
GimpRectangleTool *rectangle = GIMP_RECTANGLE_TOOL (tool);
gint inc_x, inc_y;
gint min_x, min_y;
gint max_x, max_y;
if (gdisp != tool->gdisp)
return FALSE;
inc_x = inc_y = 0;
switch (kevent->keyval)
{
case GDK_Up:
inc_y = -1;
break;
case GDK_Left:
inc_x = -1;
break;
case GDK_Right:
inc_x = 1;
break;
case GDK_Down:
inc_y = 1;
break;
case GDK_KP_Enter:
case GDK_Return:
rectangle_response (NULL, GIMP_RECTANGLE_MODE_EXECUTE, rectangle);
return TRUE;
case GDK_Escape:
rectangle_response (NULL, GTK_RESPONSE_CANCEL, rectangle);
return TRUE;
default:
return FALSE;
}
/* If the shift key is down, move by an accelerated increment */
if (kevent->state & GDK_SHIFT_MASK)
{
inc_y *= ARROW_VELOCITY;
inc_x *= ARROW_VELOCITY;
}
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
min_x = min_y = 0;
max_x = gdisp->gimage->width;
max_y = gdisp->gimage->height;
rectangle->x1 += inc_x;
rectangle->x2 += inc_x;
rectangle->y1 += inc_y;
rectangle->y2 += inc_y;
rectangle_recalc (rectangle);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
return TRUE;
}
static void
gimp_rectangle_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp)
{
}
static void
gimp_rectangle_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpRectangleTool *rectangle = GIMP_RECTANGLE_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
if (tool->gdisp != gdisp)
return;
/* If the cursor is in either the upper left or lower right boxes,
* The new function will be to resize the current rectangle area
*/
if (gimp_draw_tool_on_handle (draw_tool, gdisp,
coords->x, coords->y,
GIMP_HANDLE_SQUARE,
rectangle->x1, rectangle->y1,
rectangle->dcw, rectangle->dch,
GTK_ANCHOR_NORTH_WEST,
FALSE))
{
rectangle->function = RECT_RESIZING_LEFT;
gimp_tool_control_set_snap_offsets (tool->control,
rectangle->x1 - coords->x,
rectangle->y1 - coords->y,
0, 0);
}
else if (gimp_draw_tool_on_handle (draw_tool, gdisp,
coords->x, coords->y,
GIMP_HANDLE_SQUARE,
rectangle->x2, rectangle->y2,
rectangle->dcw, rectangle->dch,
GTK_ANCHOR_SOUTH_EAST,
FALSE))
{
rectangle->function = RECT_RESIZING_RIGHT;
gimp_tool_control_set_snap_offsets (tool->control,
rectangle->x2 - coords->x,
rectangle->y2 - coords->y,
0, 0);
}
/* If the cursor is in either the upper right or lower left boxes,
* The new function will be to translate the current rectangle area
*/
else if (gimp_draw_tool_on_handle (draw_tool, gdisp,
coords->x, coords->y,
GIMP_HANDLE_SQUARE,
rectangle->x2, rectangle->y1,
rectangle->dcw, rectangle->dch,
GTK_ANCHOR_NORTH_EAST,
FALSE) ||
gimp_draw_tool_on_handle (draw_tool, gdisp,
coords->x, coords->y,
GIMP_HANDLE_SQUARE,
rectangle->x1, rectangle->y2,
rectangle->dcw, rectangle->dch,
GTK_ANCHOR_SOUTH_WEST,
FALSE))
{
rectangle->function = RECT_MOVING;
gimp_tool_control_set_snap_offsets (tool->control,
rectangle->x1 - coords->x,
rectangle->y1 - coords->y,
rectangle->x2 - rectangle->x1,
rectangle->y2 - rectangle->y1);
}
/* If the pointer is in the rectangular region, execute or resize it!
*/
else if (coords->x > rectangle->x1 &&
coords->x < rectangle->x2 &&
coords->y > rectangle->y1 &&
coords->y < rectangle->y2)
{
rectangle->function = RECT_EXECUTING;
}
/* otherwise, the new function will be creating, since we want
* to start a new
*/
else
{
rectangle->function = RECT_CREATING;
gimp_tool_control_set_snap_offsets (tool->control, 0, 0, 0, 0);
}
}
static void
gimp_rectangle_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpRectangleTool *rectangle = GIMP_RECTANGLE_TOOL (tool);
GimpRectangleOptions *options;
GimpCursorType cursor = GIMP_CURSOR_CROSSHAIR_SMALL;
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
options = GIMP_RECTANGLE_OPTIONS (tool->tool_info->tool_options);
if (tool->gdisp == gdisp)
{
switch (rectangle->function)
{
case RECT_MOVING:
modifier = GIMP_CURSOR_MODIFIER_MOVE;
break;
case RECT_RESIZING_LEFT:
case RECT_RESIZING_RIGHT:
modifier = GIMP_CURSOR_MODIFIER_RESIZE;
break;
default:
break;
}
}
gimp_tool_control_set_cursor (tool->control, cursor);
gimp_tool_control_set_tool_cursor (tool->control,
GIMP_TOOL_CURSOR_CROP);
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
}
static void
gimp_rectangle_tool_draw (GimpDrawTool *draw)
{
GimpRectangleTool *rectangle = GIMP_RECTANGLE_TOOL (draw);
GimpTool *tool = GIMP_TOOL (draw);
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (tool->gdisp->shell);
GimpCanvas *canvas = GIMP_CANVAS (shell->canvas);
gimp_canvas_draw_line (canvas, GIMP_CANVAS_STYLE_XOR,
rectangle->dx1, rectangle->dy1,
shell->disp_width, rectangle->dy1);
gimp_canvas_draw_line (canvas, GIMP_CANVAS_STYLE_XOR,
rectangle->dx1, rectangle->dy1,
rectangle->dx1, shell->disp_height);
gimp_canvas_draw_line (canvas, GIMP_CANVAS_STYLE_XOR,
rectangle->dx2, rectangle->dy2,
0, rectangle->dy2);
gimp_canvas_draw_line (canvas, GIMP_CANVAS_STYLE_XOR,
rectangle->dx2, rectangle->dy2,
rectangle->dx2, 0);
gimp_draw_tool_draw_handle (draw,
GIMP_HANDLE_FILLED_SQUARE,
rectangle->x1, rectangle->y1,
rectangle->dcw, rectangle->dch,
GTK_ANCHOR_NORTH_WEST,
FALSE);
gimp_draw_tool_draw_handle (draw,
GIMP_HANDLE_FILLED_SQUARE,
rectangle->x2, rectangle->y1,
rectangle->dcw, rectangle->dch,
GTK_ANCHOR_NORTH_EAST,
FALSE);
gimp_draw_tool_draw_handle (draw,
GIMP_HANDLE_FILLED_SQUARE,
rectangle->x1, rectangle->y2,
rectangle->dcw, rectangle->dch,
GTK_ANCHOR_SOUTH_WEST,
FALSE);
gimp_draw_tool_draw_handle (draw,
GIMP_HANDLE_FILLED_SQUARE,
rectangle->x2, rectangle->y2,
rectangle->dcw, rectangle->dch,
GTK_ANCHOR_SOUTH_EAST,
FALSE);
}
static void
rectangle_recalc (GimpRectangleTool *rectangle)
{
GimpTool *tool = GIMP_TOOL (rectangle);
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (tool->gdisp->shell);
GimpRectangleOptions *options;
options = GIMP_RECTANGLE_OPTIONS (tool->tool_info->tool_options);
if (! tool->gdisp)
return;
if (options->highlight)
{
GdkRectangle rect;
rect.x = rectangle->x1;
rect.y = rectangle->y1;
rect.width = rectangle->x2 - rectangle->x1;
rect.height = rectangle->y2 - rectangle->y1;
gimp_display_shell_set_highlight (shell, &rect);
}
gimp_display_shell_transform_xy (shell,
rectangle->x1, rectangle->y1,
&rectangle->dx1, &rectangle->dy1,
FALSE);
gimp_display_shell_transform_xy (shell,
rectangle->x2, rectangle->y2,
&rectangle->dx2, &rectangle->dy2,
FALSE);
#define SRW 10
#define SRH 10
rectangle->dcw = ((rectangle->dx2 - rectangle->dx1) < SRW) ?
(rectangle->dx2 - rectangle->dx1) : SRW;
rectangle->dch = ((rectangle->dy2 - rectangle->dy1) < SRH) ?
(rectangle->dy2 - rectangle->dy1) : SRH;
#undef SRW
#undef SRH
if ((rectangle->y2 - rectangle->y1) != 0)
{
if (rectangle->change_aspect_ratio)
rectangle->aspect_ratio = ((gdouble) (rectangle->x2 - rectangle->x1) /
(gdouble) (rectangle->y2 - rectangle->y1));
}
else
{
rectangle->aspect_ratio = 0.0;
}
rectangle_info_update (rectangle);
}
static void
rectangle_tool_start (GimpRectangleTool *rectangle)
{
GimpTool *tool = GIMP_TOOL (rectangle);
rectangle_recalc (rectangle);
/* initialize the statusbar display */
gimp_tool_push_status_coords (tool, _("Rectangle: "), 0, " x ", 0);
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), tool->gdisp);
}
static void
rectangle_info_update (GimpRectangleTool *rectangle)
{
rectangle->orig_vals[0] = rectangle->x1;
rectangle->orig_vals[1] = rectangle->y1;
rectangle->size_vals[0] = rectangle->x2 - rectangle->x1;
rectangle->size_vals[1] = rectangle->y2 - rectangle->y1;
}
static void
rectangle_response (GtkWidget *widget,
gint response_id,
GimpRectangleTool *rectangle)
{
GimpTool *tool = GIMP_TOOL (rectangle);
switch (response_id)
{
case GIMP_RECTANGLE_MODE_EXECUTE:
gimp_display_shell_set_highlight (GIMP_DISPLAY_SHELL (tool->gdisp->shell),
NULL);
rectangle_tool_execute (GIMP_RECTANGLE_TOOL (tool),
rectangle->x1, rectangle->y1,
rectangle->x2 - rectangle->x1,
rectangle->y2 - rectangle->y1);
gimp_image_flush (tool->gdisp->gimage);
break;
default:
break;
}
if (tool->gdisp)
gimp_display_shell_set_highlight (GIMP_DISPLAY_SHELL (tool->gdisp->shell),
NULL);
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (rectangle)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (rectangle));
if (gimp_tool_control_is_active (GIMP_TOOL (rectangle)->control))
gimp_tool_control_halt (GIMP_TOOL (rectangle)->control);
tool->gdisp = NULL;
tool->drawable = NULL;
}
static void
rectangle_selection_callback (GtkWidget *widget,
GimpRectangleTool *rectangle)
{
GimpRectangleOptions *options;
GimpDisplay *gdisp;
options = GIMP_RECTANGLE_OPTIONS (GIMP_TOOL (rectangle)->tool_info->tool_options);
gdisp = GIMP_TOOL (rectangle)->gdisp;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (rectangle));
if (! gimp_channel_bounds (gimp_image_get_mask (gdisp->gimage),
&rectangle->x1, &rectangle->y1,
&rectangle->x2, &rectangle->y2))
{
rectangle->x1 = rectangle->y1 = 0;
rectangle->x2 = gdisp->gimage->width;
rectangle->y2 = gdisp->gimage->height;
}
/* force change of aspect ratio */
if ((rectangle->y2 - rectangle->y1) != 0)
rectangle->aspect_ratio = ((gdouble) (rectangle->x2 - rectangle->x1) /
(gdouble) (rectangle->y2 - rectangle->y1));
rectangle_recalc (rectangle);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (rectangle));
}
static void
rectangle_automatic_callback (GtkWidget *widget,
GimpRectangleTool *rectangle)
{
GimpRectangleOptions *options;
GimpDisplay *gdisp;
gint offset_x, offset_y;
gint width, height;
gint x1, y1, x2, y2;
gint shrunk_x1;
gint shrunk_y1;
gint shrunk_x2;
gint shrunk_y2;
options = GIMP_RECTANGLE_OPTIONS (GIMP_TOOL (rectangle)->tool_info->tool_options);
gdisp = GIMP_TOOL (rectangle)->gdisp;
width = gdisp->gimage->width;
height = gdisp->gimage->height;
offset_x = 0;
offset_y = 0;
x1 = rectangle->x1 - offset_x > 0 ? rectangle->x1 - offset_x : 0;
x2 = rectangle->x2 - offset_x < width ? rectangle->x2 - offset_x : width;
y1 = rectangle->y1 - offset_y > 0 ? rectangle->y1 - offset_y : 0;
y2 = rectangle->y2 - offset_y < height ? rectangle->y2 - offset_y : height;
if (gimp_image_crop_auto_shrink (gdisp->gimage,
x1, y1, x2, y2,
FALSE,
&shrunk_x1,
&shrunk_y1,
&shrunk_x2,
&shrunk_y2))
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (rectangle));
rectangle->x1 = offset_x + shrunk_x1;
rectangle->x2 = offset_x + shrunk_x2;
rectangle->y1 = offset_y + shrunk_y1;
rectangle->y2 = offset_y + shrunk_y2;
rectangle_recalc (rectangle);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (rectangle));
}
}
static void
rectangle_origin_changed (GtkWidget *widget,
GimpRectangleTool *rectangle)
{
gint origin_x;
gint origin_y;
origin_x = RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 0));
origin_y = RINT (gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 1));
if ((origin_x != rectangle->x1) ||
(origin_y != rectangle->y1))
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (rectangle));
rectangle->x2 = rectangle->x2 + (origin_x - rectangle->x1);
rectangle->x1 = origin_x;
rectangle->y2 = rectangle->y2 + (origin_y - rectangle->y1);
rectangle->y1 = origin_y;
rectangle_recalc (rectangle);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (rectangle));
}
}
static void
rectangle_size_changed (GtkWidget *widget,
GimpRectangleTool *rectangle)
{
gint size_x = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 0);
gint size_y = gimp_size_entry_get_refval (GIMP_SIZE_ENTRY (widget), 1);
if ((size_x != (rectangle->x2 - rectangle->x1)) ||
(size_y != (rectangle->y2 - rectangle->y1)))
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (rectangle));
rectangle->x2 = size_x + rectangle->x1;
rectangle->y2 = size_y + rectangle->y1;
rectangle_recalc (rectangle);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (rectangle));
}
}
static void
rectangle_aspect_changed (GtkWidget *widget,
GimpRectangleTool *rectangle)
{
rectangle->aspect_ratio = GTK_ADJUSTMENT (widget)->value;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (rectangle));
rectangle->y2 = rectangle->y1 + ((gdouble) (rectangle->x2 - rectangle->x1)
/ rectangle->aspect_ratio);
rectangle->change_aspect_ratio = FALSE;
rectangle_recalc (rectangle);
rectangle->change_aspect_ratio = TRUE;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (rectangle));
}
static void
rectangle_tool_execute (GimpRectangleTool *rect_tool,
gint x,
gint y,
gint w,
gint h)
{
GimpTool *tool;
GimpSelectionOptions *options;
g_return_if_fail (GIMP_IS_RECTANGLE_TOOL (rect_tool));
tool = GIMP_TOOL (rect_tool);
options = GIMP_SELECTION_OPTIONS (tool->tool_info->tool_options);
if (options->auto_shrink)
{
gint off_x = 0;
gint off_y = 0;
gint x2, y2;
if (! gimp_rectangle_intersect (x, y, w, h,
0, 0,
tool->gdisp->gimage->width,
tool->gdisp->gimage->height,
&x, &y, &w, &h))
{
return;
}
if (! options->shrink_merged)
{
GimpItem *item;
gint width, height;
item = GIMP_ITEM (gimp_image_active_drawable (tool->gdisp->gimage));
gimp_item_offsets (item, &off_x, &off_y);
width = gimp_item_width (item);
height = gimp_item_height (item);
if (! gimp_rectangle_intersect (x, y, w, h,
off_x, off_y, width, height,
&x, &y, &w, &h))
{
return;
}
x -= off_x;
y -= off_y;
}
if (gimp_image_crop_auto_shrink (tool->gdisp->gimage,
x, y,
x + w, y + h,
! options->shrink_merged,
&x, &y,
&x2, &y2))
{
w = x2 - x;
h = y2 - y;
}
x += off_x;
y += off_y;
}
GIMP_RECTANGLE_TOOL_GET_CLASS (rect_tool)->execute (rect_tool, x, y, w, h);
}
static void
gimp_rectangle_tool_real_execute (GimpRectangleTool *rect_tool,
gint x,
gint y,
gint w,
gint h)
{
}
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