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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 <gdk/gdkkeysyms.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimpchannel.h"
#include "core/gimpimage.h"
#include "core/gimpimage-crop.h"
#include "core/gimptoolinfo.h"
#include "widgets/gimpdialogfactory.h"
#include "widgets/gimpenumwidgets.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"
#ifdef __GNUC__
#warning FIXME #include "gui/gui-types.h"
#endif
#include "gui/gui-types.h"
#include "gui/info-dialog.h"
#include "gimpcropoptions.h"
#include "gimpcroptool.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
/* speed of key movement */
#define ARROW_VELOCITY 25
/* possible crop functions */
enum
{
CREATING,
MOVING,
RESIZING_LEFT,
RESIZING_RIGHT,
CROPPING
};
static void gimp_crop_tool_class_init (GimpCropToolClass *klass);
static void gimp_crop_tool_init (GimpCropTool *crop_tool);
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_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_crop_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_crop_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp);
static gboolean gimp_crop_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *gdisp);
static void gimp_crop_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_crop_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_crop_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp);
static void gimp_crop_tool_draw (GimpDrawTool *draw_tool);
/* Crop helper functions */
static void crop_tool_crop_image (GimpImage *gimage,
GimpContext *context,
gint x1,
gint y1,
gint x2,
gint y2,
gboolean layer_only,
GimpCropMode crop_mode);
static void crop_recalc (GimpCropTool *crop);
static void crop_start (GimpCropTool *crop);
/* Crop dialog functions */
static void crop_info_update (GimpCropTool *crop);
static void crop_info_create (GimpCropTool *crop);
static void crop_response (GtkWidget *widget,
gint response_id,
GimpCropTool *crop);
static void crop_selection_callback (GtkWidget *widget,
GimpCropTool *crop);
static void crop_automatic_callback (GtkWidget *widget,
GimpCropTool *crop);
static void crop_origin_changed (GtkWidget *widget,
GimpCropTool *crop);
static void crop_size_changed (GtkWidget *widget,
GimpCropTool *crop);
static void crop_aspect_changed (GtkWidget *widget,
GimpCropTool *crop);
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"), "<shift>C",
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,
};
tool_type = g_type_register_static (GIMP_TYPE_DRAW_TOOL,
"GimpCropTool",
&tool_info, 0);
}
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->finalize = gimp_crop_tool_finalize;
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_crop_tool_motion;
tool_class->key_press = gimp_crop_tool_key_press;
tool_class->modifier_key = gimp_crop_tool_modifier_key;
tool_class->oper_update = gimp_crop_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_init (GimpCropTool *crop_tool)
{
GimpTool *tool = GIMP_TOOL (crop_tool);
gimp_tool_control_set_preserve (tool->control, FALSE);
gimp_tool_control_set_dirty_mask (tool->control, GIMP_DIRTY_IMAGE_SIZE);
gimp_tool_control_set_tool_cursor (tool->control, GIMP_TOOL_CURSOR_CROP);
}
static void
gimp_crop_tool_finalize (GObject *object)
{
GimpCropTool *crop = GIMP_CROP_TOOL (object);
if (crop->crop_info)
{
info_dialog_free (crop->crop_info);
crop->crop_info = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gimp_crop_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *gdisp)
{
GimpCropTool *crop = GIMP_CROP_TOOL (tool);
switch (action)
{
case PAUSE:
break;
case RESUME:
crop_recalc (crop);
break;
case HALT:
crop_response (NULL, GTK_RESPONSE_CANCEL, crop);
break;
default:
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, gdisp);
}
static void
gimp_crop_tool_button_press (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpCropTool *crop = GIMP_CROP_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
if (gdisp != tool->gdisp)
{
if (gimp_draw_tool_is_active (draw_tool))
gimp_draw_tool_stop (draw_tool);
crop->function = CREATING;
gimp_tool_control_set_snap_offsets (tool->control, 0, 0, 0, 0);
tool->gdisp = gdisp;
crop->x2 = crop->x1 = ROUND (coords->x);
crop->y2 = crop->y1 = ROUND (coords->y);
crop_start (crop);
}
crop->lastx = crop->startx = ROUND (coords->x);
crop->lasty = crop->starty = ROUND (coords->y);
gimp_tool_control_activate (tool->control);
}
static void
gimp_crop_tool_button_release (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpCropTool *crop = GIMP_CROP_TOOL (tool);
GimpCropOptions *options = GIMP_CROP_OPTIONS (tool->tool_info->tool_options);
gimp_tool_control_halt (tool->control);
gimp_tool_pop_status (tool);
if (! (state & GDK_BUTTON3_MASK))
{
if (crop->function == CROPPING)
{
crop_tool_crop_image (gdisp->gimage,
GIMP_CONTEXT (options),
crop->x1, crop->y1,
crop->x2, crop->y2,
options->layer_only,
options->crop_mode);
/* Finish the tool */
crop_response (NULL, GTK_RESPONSE_CANCEL, crop);
}
else
{
crop_info_update (crop);
}
}
}
static void
gimp_crop_tool_motion (GimpTool *tool,
GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpCropTool *crop = GIMP_CROP_TOOL (tool);
GimpCropOptions *options = GIMP_CROP_OPTIONS (tool->tool_info->tool_options);
GimpLayer *layer;
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 crop the image */
if (crop->function == CROPPING)
return;
curx = ROUND (coords->x);
cury = ROUND (coords->y);
x1 = crop->startx;
y1 = crop->starty;
x2 = curx;
y2 = cury;
inc_x = (x2 - x1);
inc_y = (y2 - y1);
/* If there have been no changes... return */
if (crop->lastx == x2 && crop->lasty == y2)
return;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
if (options->layer_only)
{
layer = gimp_image_get_active_layer (gdisp->gimage);
gimp_item_offsets (GIMP_ITEM (layer), &min_x, &min_y);
max_x = gimp_item_width (GIMP_ITEM (layer)) + min_x;
max_y = gimp_item_height (GIMP_ITEM (layer)) + min_y;
}
else
{
min_x = min_y = 0;
max_x = gdisp->gimage->width;
max_y = gdisp->gimage->height;
}
switch (crop->function)
{
case CREATING:
if (! options->allow_enlarge)
{
x1 = CLAMP (x1, min_x, max_x);
y1 = CLAMP (y1, min_y, max_y);
x2 = CLAMP (x2, min_x, max_x);
y2 = CLAMP (y2, min_y, max_y);
}
g_object_set (options, "keep-aspect", FALSE, NULL);
crop->change_aspect_ratio = TRUE;
break;
case RESIZING_LEFT:
x1 = crop->x1 + inc_x;
y1 = crop->y1 + inc_y;
if (options->keep_aspect && crop->aspect_ratio != 0)
{
y1 = crop->y2 + (gint)((gdouble)(x1 - crop->x2) / crop->aspect_ratio);
}
if (! options->allow_enlarge)
{
x1 = CLAMP (x1, min_x, max_x);
if ((y1 < CLAMP (y1, min_y, max_y)) && (options->keep_aspect))
{
x1 = crop->x1;
}
y1 = CLAMP (y1, min_y, max_y);
}
x2 = MAX (x1, crop->x2);
y2 = MAX (y1, crop->y2);
crop->startx = curx;
crop->starty = cury;
break;
case RESIZING_RIGHT:
x2 = crop->x2 + inc_x;
y2 = crop->y2 + inc_y;
if (options->keep_aspect && crop->aspect_ratio != 0)
{
y2 = crop->y1 + (gint)((gdouble)(x2 - crop->x1) / crop->aspect_ratio);
}
if (! options->allow_enlarge)
{
x2 = CLAMP (x2, min_x, max_x);
if ((y2 > CLAMP (y2, min_y, max_y)) && (options->keep_aspect))
{
x2 = crop->x2;
}
y2 = CLAMP (y2, min_y, max_y);
}
x1 = MIN (crop->x1, x2);
y1 = MIN (crop->y1, y2);
crop->startx = curx;
crop->starty = cury;
break;
case MOVING:
if (! options->allow_enlarge)
{
inc_x = CLAMP (inc_x, min_x - crop->x1, max_x - crop->x2);
inc_y = CLAMP (inc_y, min_y - crop->y1, max_y - crop->y2);
}
x1 = crop->x1 + inc_x;
x2 = crop->x2 + inc_x;
y1 = crop->y1 + inc_y;
y2 = crop->y2 + inc_y;
crop->startx = curx;
crop->starty = cury;
break;
}
/* make sure that the coords are in bounds */
crop->x1 = MIN (x1, x2);
crop->y1 = MIN (y1, y2);
crop->x2 = MAX (x1, x2);
crop->y2 = MAX (y1, y2);
crop->lastx = curx;
crop->lasty = cury;
/* recalculate the coordinates for crop_draw based on the new values */
crop_recalc (crop);
switch (crop->function)
{
case RESIZING_LEFT:
gimp_tool_control_set_snap_offsets (tool->control,
crop->x1 - coords->x,
crop->y1 - coords->y,
0, 0);
break;
case RESIZING_RIGHT:
gimp_tool_control_set_snap_offsets (tool->control,
crop->x2 - coords->x,
crop->y2 - coords->y,
0, 0);
break;
case MOVING:
gimp_tool_control_set_snap_offsets (tool->control,
crop->x1 - coords->x,
crop->y1 - coords->y,
crop->x2 - crop->x1,
crop->y2 - crop->y1);
break;
default:
break;
}
if (crop->function == CREATING ||
crop->function == RESIZING_LEFT ||
crop->function == RESIZING_RIGHT)
{
gimp_tool_pop_status (tool);
gimp_tool_push_status_coords (tool,
_("Crop: "),
crop->x2 - crop->x1,
" x ",
crop->y2 - crop->y1);
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
static gboolean
gimp_crop_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *gdisp)
{
GimpCropTool *crop = GIMP_CROP_TOOL (tool);
GimpCropOptions *options = GIMP_CROP_OPTIONS (tool->tool_info->tool_options);
GimpLayer *layer;
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:
crop_response (NULL, options->crop_mode, crop);
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));
if (options->layer_only)
{
layer = gimp_image_get_active_layer (gdisp->gimage);
gimp_item_offsets (GIMP_ITEM (layer), &min_x, &min_y);
max_x = gimp_item_width (GIMP_ITEM (layer)) + min_x;
max_y = gimp_item_height (GIMP_ITEM (layer)) + min_y;
}
else
{
min_x = min_y = 0;
max_x = gdisp->gimage->width;
max_y = gdisp->gimage->height;
}
if (kevent->state & GDK_CONTROL_MASK) /* RESIZING */
{
crop->x2 = crop->x2 + inc_x;
crop->y2 = crop->y2 + inc_y;
if (! options->allow_enlarge)
{
crop->x2 = CLAMP (crop->x2, min_x, max_x);
crop->y2 = CLAMP (crop->y2, min_y, max_y);
}
crop->x1 = MIN (crop->x1, crop->x2);
crop->y1 = MIN (crop->y1, crop->y2);
}
else
{
if (! options->allow_enlarge)
{
inc_x = CLAMP (inc_x,
-crop->x1, gdisp->gimage->width - crop->x2);
inc_y = CLAMP (inc_y,
-crop->y1, gdisp->gimage->height - crop->y2);
}
crop->x1 += inc_x;
crop->x2 += inc_x;
crop->y1 += inc_y;
crop->y2 += inc_y;
}
crop_recalc (crop);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
return TRUE;
}
static void
gimp_crop_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpCropOptions *options = GIMP_CROP_OPTIONS (tool->tool_info->tool_options);
if (state & GDK_MOD1_MASK)
{
if (! options->allow_enlarge)
g_object_set (options, "allow-enlarge", TRUE, NULL);
}
else
{
if (options->allow_enlarge)
g_object_set (options, "allow-enlarge", FALSE, NULL);
}
if (state & GDK_SHIFT_MASK)
{
if (! options->keep_aspect)
g_object_set (options, "keep-aspect", TRUE, NULL);
}
else
{
if (options->keep_aspect)
g_object_set (options, "keep-aspect", FALSE, NULL);
}
if (key == GDK_CONTROL_MASK)
{
switch (options->crop_mode)
{
case GIMP_CROP_MODE_CROP:
g_object_set (options, "crop-mode", GIMP_CROP_MODE_RESIZE, NULL);
break;
case GIMP_CROP_MODE_RESIZE:
g_object_set (options, "crop-mode", GIMP_CROP_MODE_CROP, NULL);
break;
default:
break;
}
}
}
static void
gimp_crop_tool_oper_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpCropTool *crop = GIMP_CROP_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 crop area
*/
if (gimp_draw_tool_on_handle (draw_tool, gdisp,
coords->x, coords->y,
GIMP_HANDLE_SQUARE,
crop->x1, crop->y1,
crop->dcw, crop->dch,
GTK_ANCHOR_NORTH_WEST,
FALSE))
{
crop->function = RESIZING_LEFT;
gimp_tool_control_set_snap_offsets (tool->control,
crop->x1 - coords->x,
crop->y1 - coords->y,
0, 0);
}
else if (gimp_draw_tool_on_handle (draw_tool, gdisp,
coords->x, coords->y,
GIMP_HANDLE_SQUARE,
crop->x2, crop->y2,
crop->dcw, crop->dch,
GTK_ANCHOR_SOUTH_EAST,
FALSE))
{
crop->function = RESIZING_RIGHT;
gimp_tool_control_set_snap_offsets (tool->control,
crop->x2 - coords->x,
crop->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 crop area
*/
else if (gimp_draw_tool_on_handle (draw_tool, gdisp,
coords->x, coords->y,
GIMP_HANDLE_SQUARE,
crop->x2, crop->y1,
crop->dcw, crop->dch,
GTK_ANCHOR_NORTH_EAST,
FALSE) ||
gimp_draw_tool_on_handle (draw_tool, gdisp,
coords->x, coords->y,
GIMP_HANDLE_SQUARE,
crop->x1, crop->y2,
crop->dcw, crop->dch,
GTK_ANCHOR_SOUTH_WEST,
FALSE))
{
crop->function = MOVING;
gimp_tool_control_set_snap_offsets (tool->control,
crop->x1 - coords->x,
crop->y1 - coords->y,
crop->x2 - crop->x1,
crop->y2 - crop->y1);
}
/* If the pointer is in the rectangular region, crop or resize it!
*/
else if (coords->x > crop->x1 &&
coords->x < crop->x2 &&
coords->y > crop->y1 &&
coords->y < crop->y2)
{
crop->function = CROPPING;
}
/* otherwise, the new function will be creating, since we want
* to start a new
*/
else
{
crop->function = CREATING;
gimp_tool_control_set_snap_offsets (tool->control, 0, 0, 0, 0);
}
}
static void
gimp_crop_tool_cursor_update (GimpTool *tool,
GimpCoords *coords,
GdkModifierType state,
GimpDisplay *gdisp)
{
GimpCropTool *crop = GIMP_CROP_TOOL (tool);
GimpCropOptions *options;
GimpCursorType cursor = GIMP_CURSOR_CROSSHAIR_SMALL;
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
options = GIMP_CROP_OPTIONS (tool->tool_info->tool_options);
if (tool->gdisp == gdisp)
{
switch (crop->function)
{
case MOVING:
modifier = GIMP_CURSOR_MODIFIER_MOVE;
break;
case RESIZING_LEFT:
case 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,
options->crop_mode ==
GIMP_CROP_MODE_CROP ?
GIMP_TOOL_CURSOR_CROP :
GIMP_TOOL_CURSOR_RESIZE);
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, gdisp);
}
static void
gimp_crop_tool_draw (GimpDrawTool *draw)
{
GimpCropTool *crop = GIMP_CROP_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,
crop->dx1, crop->dy1,
shell->disp_width, crop->dy1);
gimp_canvas_draw_line (canvas, GIMP_CANVAS_STYLE_XOR,
crop->dx1, crop->dy1,
crop->dx1, shell->disp_height);
gimp_canvas_draw_line (canvas, GIMP_CANVAS_STYLE_XOR,
crop->dx2, crop->dy2,
0, crop->dy2);
gimp_canvas_draw_line (canvas, GIMP_CANVAS_STYLE_XOR,
crop->dx2, crop->dy2,
crop->dx2, 0);
gimp_draw_tool_draw_handle (draw,
GIMP_HANDLE_FILLED_SQUARE,
crop->x1, crop->y1,
crop->dcw, crop->dch,
GTK_ANCHOR_NORTH_WEST,
FALSE);
gimp_draw_tool_draw_handle (draw,
GIMP_HANDLE_FILLED_SQUARE,
crop->x2, crop->y1,
crop->dcw, crop->dch,
GTK_ANCHOR_NORTH_EAST,
FALSE);
gimp_draw_tool_draw_handle (draw,
GIMP_HANDLE_FILLED_SQUARE,
crop->x1, crop->y2,
crop->dcw, crop->dch,
GTK_ANCHOR_SOUTH_WEST,
FALSE);
gimp_draw_tool_draw_handle (draw,
GIMP_HANDLE_FILLED_SQUARE,
crop->x2, crop->y2,
crop->dcw, crop->dch,
GTK_ANCHOR_SOUTH_EAST,
FALSE);
}
static void
crop_tool_crop_image (GimpImage *gimage,
GimpContext *context,
gint x1,
gint y1,
gint x2,
gint y2,
gboolean layer_only,
GimpCropMode crop_mode)
{
if ((x1 == x2) || (y1 == y2))
return;
gimp_image_crop (gimage, context,
x1, y1, x2, y2,
layer_only,
crop_mode == GIMP_CROP_MODE_CROP);
gimp_image_flush (gimage);
}
static void
crop_recalc (GimpCropTool *crop)
{
GimpTool *tool = GIMP_TOOL (crop);
if (! tool->gdisp)
return;
gimp_display_shell_transform_xy (GIMP_DISPLAY_SHELL (tool->gdisp->shell),
crop->x1, crop->y1,
&crop->dx1, &crop->dy1,
FALSE);
gimp_display_shell_transform_xy (GIMP_DISPLAY_SHELL (tool->gdisp->shell),
crop->x2, crop->y2,
&crop->dx2, &crop->dy2,
FALSE);
#define SRW 10
#define SRH 10
crop->dcw = ((crop->dx2 - crop->dx1) < SRW) ? (crop->dx2 - crop->dx1) : SRW;
crop->dch = ((crop->dy2 - crop->dy1) < SRH) ? (crop->dy2 - crop->dy1) : SRH;
#undef SRW
#undef SRH
if (crop->crop_info)
crop_info_update (crop);
}
static void
crop_start (GimpCropTool *crop)
{
GimpTool *tool = GIMP_TOOL (crop);
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (tool->gdisp->shell);
crop_recalc (crop);
if (! crop->crop_info)
crop_info_create (crop);
gimp_viewable_dialog_set_viewable (GIMP_VIEWABLE_DIALOG (crop->crop_info->shell),
GIMP_VIEWABLE (tool->gdisp->gimage));
g_signal_handlers_block_by_func (crop->origin_sizeentry,
crop_origin_changed,
crop);
g_signal_handlers_block_by_func (crop->size_sizeentry,
crop_size_changed,
crop);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (crop->origin_sizeentry), 0,
tool->gdisp->gimage->xresolution, FALSE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (crop->origin_sizeentry), 1,
tool->gdisp->gimage->yresolution, FALSE);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (crop->origin_sizeentry), 0,
0, tool->gdisp->gimage->width);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (crop->origin_sizeentry), 1,
0, tool->gdisp->gimage->height);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (crop->size_sizeentry), 0,
tool->gdisp->gimage->xresolution, FALSE);
gimp_size_entry_set_resolution (GIMP_SIZE_ENTRY (crop->size_sizeentry), 1,
tool->gdisp->gimage->yresolution, FALSE);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (crop->size_sizeentry), 0,
0, tool->gdisp->gimage->width);
gimp_size_entry_set_size (GIMP_SIZE_ENTRY (crop->size_sizeentry), 1,
0, tool->gdisp->gimage->height);
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (crop->origin_sizeentry),
shell->unit);
gimp_size_entry_set_unit (GIMP_SIZE_ENTRY (crop->size_sizeentry),
shell->unit);
g_signal_handlers_unblock_by_func (crop->origin_sizeentry,
crop_origin_changed,
crop);
g_signal_handlers_unblock_by_func (crop->size_sizeentry,
crop_size_changed,
crop);
/* initialize the statusbar display */
gimp_tool_push_status_coords (tool, _("Crop: "), 0, " x ", 0);
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), tool->gdisp);
}
/***************************/
/* Crop dialog functions */
/***************************/
static void
crop_info_create (GimpCropTool *crop)
{
GimpTool *tool = GIMP_TOOL (crop);
GimpDisplay *gdisp = tool->gdisp;
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (gdisp->shell);
GtkWidget *spinbutton;
GtkWidget *bbox;
GtkWidget *button;
const gchar *stock_id;
stock_id = gimp_viewable_get_stock_id (GIMP_VIEWABLE (tool->tool_info));
crop->crop_info = info_dialog_new (NULL,
tool->tool_info->blurb,
GIMP_OBJECT (tool->tool_info)->name,
stock_id,
_("Crop & Resize Information"),
NULL /* gdisp->shell */,
gimp_standard_help_func,
tool->tool_info->help_id);
gtk_dialog_add_buttons (GTK_DIALOG (crop->crop_info->shell),
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
GIMP_STOCK_RESIZE, GIMP_CROP_MODE_RESIZE,
GIMP_STOCK_TOOL_CROP, GIMP_CROP_MODE_CROP,
NULL);
gtk_dialog_set_default_response (GTK_DIALOG (crop->crop_info->shell),
GIMP_CROP_MODE_CROP);
g_signal_connect (crop->crop_info->shell, "response",
G_CALLBACK (crop_response),
crop);
/* add the information fields */
spinbutton = info_dialog_add_spinbutton (crop->crop_info,
_("Origin X:"), NULL,
-1, 1, 1, 10, 1, 1, 2, NULL, NULL);
crop->origin_sizeentry =
info_dialog_add_sizeentry (crop->crop_info,
_("Origin Y:"), crop->orig_vals, 1,
shell->unit, "%a",
TRUE, TRUE, FALSE, GIMP_SIZE_ENTRY_UPDATE_SIZE,
G_CALLBACK (crop_origin_changed),
crop);
gimp_size_entry_add_field (GIMP_SIZE_ENTRY (crop->origin_sizeentry),
GTK_SPIN_BUTTON (spinbutton), NULL);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (crop->origin_sizeentry),
0, -GIMP_MAX_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (crop->origin_sizeentry),
1, -GIMP_MAX_IMAGE_SIZE, GIMP_MAX_IMAGE_SIZE);
spinbutton = info_dialog_add_spinbutton (crop->crop_info, _("Width:"), NULL,
-1, 1, 1, 10, 1, 1, 2, NULL, NULL);
crop->size_sizeentry =
info_dialog_add_sizeentry (crop->crop_info,
_("Height:"), crop->size_vals, 1,
shell->unit, "%a",
TRUE, TRUE, FALSE, GIMP_SIZE_ENTRY_UPDATE_SIZE,
G_CALLBACK (crop_size_changed),
crop);
gimp_size_entry_add_field (GIMP_SIZE_ENTRY (crop->size_sizeentry),
GTK_SPIN_BUTTON (spinbutton), NULL);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (crop->size_sizeentry),
0,
GIMP_MIN_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE);
gimp_size_entry_set_refval_boundaries (GIMP_SIZE_ENTRY (crop->size_sizeentry),
1,
GIMP_MIN_IMAGE_SIZE,
GIMP_MAX_IMAGE_SIZE);
gtk_table_set_row_spacing (GTK_TABLE (crop->crop_info->info_table), 0, 0);
gtk_table_set_row_spacing (GTK_TABLE (crop->crop_info->info_table), 1, 6);
gtk_table_set_row_spacing (GTK_TABLE (crop->crop_info->info_table), 2, 0);
spinbutton = info_dialog_add_spinbutton (crop->crop_info, _("Aspect ratio:"),
&(crop->aspect_ratio),
0, 65536, 0.01, 0.1, 1, 0.5, 2,
G_CALLBACK (crop_aspect_changed),
crop);
/* Create the area selection buttons */
bbox = gtk_hbutton_box_new ();
gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_SPREAD);
gtk_box_set_spacing (GTK_BOX (bbox), 4);
button = gtk_button_new_with_label (_("From selection"));
gtk_container_add (GTK_CONTAINER (bbox), button);
gtk_widget_show (button);
g_signal_connect (button , "clicked",
G_CALLBACK (crop_selection_callback),
crop);
button = gtk_button_new_with_label (_("Auto shrink"));
gtk_container_add (GTK_CONTAINER (bbox), button);
gtk_widget_show (button);
g_signal_connect (button , "clicked",
G_CALLBACK (crop_automatic_callback),
crop);
gtk_box_pack_start (GTK_BOX (crop->crop_info->vbox), bbox, FALSE, FALSE, 0);
gtk_widget_show (bbox);
gimp_dialog_factory_add_foreign (gimp_dialog_factory_from_name ("toplevel"),
"gimp-crop-tool-dialog",
crop->crop_info->shell);
}
static void
crop_info_update (GimpCropTool *crop)
{
GimpTool *tool = GIMP_TOOL (crop);
GimpCropOptions *options = GIMP_CROP_OPTIONS (tool->tool_info->tool_options);
if (! options->keep_aspect)
{
if ((crop->y2 - crop->y1) != 0)
{
if (crop->change_aspect_ratio)
crop->aspect_ratio = ((gdouble) (crop->x2 - crop->x1) /
(gdouble) (crop->y2 - crop->y1));
}
else
{
crop->aspect_ratio = 0.0;
}
}
crop->orig_vals[0] = crop->x1;
crop->orig_vals[1] = crop->y1;
crop->size_vals[0] = crop->x2 - crop->x1;
crop->size_vals[1] = crop->y2 - crop->y1;
info_dialog_update (crop->crop_info);
info_dialog_show (crop->crop_info);
}
static void
crop_response (GtkWidget *widget,
gint response_id,
GimpCropTool *crop)
{
GimpTool *tool = GIMP_TOOL (crop);
GimpCropOptions *options = GIMP_CROP_OPTIONS (tool->tool_info->tool_options);
if (crop->crop_info)
info_dialog_hide (crop->crop_info);
switch (response_id)
{
case GIMP_CROP_MODE_CROP:
case GIMP_CROP_MODE_RESIZE:
crop_tool_crop_image (tool->gdisp->gimage,
GIMP_CONTEXT (options),
crop->x1, crop->y1,
crop->x2, crop->y2,
options->layer_only,
(GimpCropMode) response_id);
break;
default:
break;
}
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (crop)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (crop));
if (gimp_tool_control_is_active (GIMP_TOOL (crop)->control))
gimp_tool_control_halt (GIMP_TOOL (crop)->control);
tool->gdisp = NULL;
tool->drawable = NULL;
}
static void
crop_selection_callback (GtkWidget *widget,
GimpCropTool *crop)
{
GimpCropOptions *options;
GimpDisplay *gdisp;
options = GIMP_CROP_OPTIONS (GIMP_TOOL (crop)->tool_info->tool_options);
gdisp = GIMP_TOOL (crop)->gdisp;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (crop));
if (! gimp_channel_bounds (gimp_image_get_mask (gdisp->gimage),
&crop->x1, &crop->y1,
&crop->x2, &crop->y2))
{
if (options->layer_only)
{
GimpLayer *layer;
layer = gimp_image_get_active_layer (gdisp->gimage);
gimp_item_offsets (GIMP_ITEM (layer), &crop->x1, &crop->y1);
crop->x2 = crop->x1 + gimp_item_width (GIMP_ITEM (layer));
crop->y2 = crop->y1 + gimp_item_height (GIMP_ITEM (layer));
}
else
{
crop->x1 = crop->y1 = 0;
crop->x2 = gdisp->gimage->width;
crop->y2 = gdisp->gimage->height;
}
}
/* force change of aspect ratio */
if ((crop->y2 - crop->y1) != 0)
crop->aspect_ratio = ((gdouble) (crop->x2 - crop->x1) /
(gdouble) (crop->y2 - crop->y1));
crop_recalc (crop);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (crop));
}
static void
crop_automatic_callback (GtkWidget *widget,
GimpCropTool *crop)
{
GimpCropOptions *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_CROP_OPTIONS (GIMP_TOOL (crop)->tool_info->tool_options);
gdisp = GIMP_TOOL (crop)->gdisp;
if (options->layer_only)
{
GimpDrawable *active_drawable;
active_drawable = gimp_image_active_drawable (gdisp->gimage);
if (! active_drawable)
return;
gimp_item_offsets (GIMP_ITEM (active_drawable), &offset_x, &offset_y);
width = gimp_item_width (GIMP_ITEM (active_drawable));
height = gimp_item_height (GIMP_ITEM (active_drawable));
}
else
{
width = gdisp->gimage->width;
height = gdisp->gimage->height;
offset_x = 0;
offset_y = 0;
}
x1 = crop->x1 - offset_x > 0 ? crop->x1 - offset_x : 0;
x2 = crop->x2 - offset_x < width ? crop->x2 - offset_x : width;
y1 = crop->y1 - offset_y > 0 ? crop->y1 - offset_y : 0;
y2 = crop->y2 - offset_y < height ? crop->y2 - offset_y : height;
if (gimp_image_crop_auto_shrink (gdisp->gimage,
x1, y1, x2, y2,
options->layer_only,
&shrunk_x1,
&shrunk_y1,
&shrunk_x2,
&shrunk_y2))
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (crop));
crop->x1 = offset_x + shrunk_x1;
crop->x2 = offset_x + shrunk_x2;
crop->y1 = offset_y + shrunk_y1;
crop->y2 = offset_y + shrunk_y2;
crop_recalc (crop);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (crop));
}
}
static void
crop_origin_changed (GtkWidget *widget,
GimpCropTool *crop)
{
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 != crop->x1) ||
(origin_y != crop->y1))
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (crop));
crop->x2 = crop->x2 + (origin_x - crop->x1);
crop->x1 = origin_x;
crop->y2 = crop->y2 + (origin_y - crop->y1);
crop->y1 = origin_y;
crop_recalc (crop);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (crop));
}
}
static void
crop_size_changed (GtkWidget *widget,
GimpCropTool *crop)
{
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 != (crop->x2 - crop->x1)) ||
(size_y != (crop->y2 - crop->y1)))
{
gimp_draw_tool_pause (GIMP_DRAW_TOOL (crop));
crop->x2 = size_x + crop->x1;
crop->y2 = size_y + crop->y1;
crop_recalc (crop);
gimp_draw_tool_resume (GIMP_DRAW_TOOL (crop));
}
}
static void
crop_aspect_changed (GtkWidget *widget,
GimpCropTool *crop)
{
crop->aspect_ratio = GTK_ADJUSTMENT (widget)->value;
gimp_draw_tool_pause (GIMP_DRAW_TOOL (crop));
crop->y2 = crop->y1 + ((gdouble) (crop->x2 - crop->x1) / crop->aspect_ratio);
crop->change_aspect_ratio = FALSE;
crop_recalc (crop);
crop->change_aspect_ratio = TRUE;
gimp_draw_tool_resume (GIMP_DRAW_TOOL (crop));
}
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