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gimp/app/tools/gimprectangleselecttool.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 "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimpchannel-select.h"
#include "core/gimpchannel.h"
#include "core/gimpimage.h"
#include "core/gimpimage-undo.h"
#include "core/gimplayer-floating-selection.h"
#include "core/gimppickable.h"
#include "core/gimpundostack.h"
#include "widgets/gimphelp-ids.h"
#include "widgets/gimpwidgets-utils.h"
#include "display/gimpdisplay.h"
#include "display/gimpdisplayshell.h"
#include "display/gimpdisplayshell-appearance.h"
#include "display/gimptoolrectangle.h"
#include "gimpeditselectiontool.h"
#include "gimprectangleoptions.h"
#include "gimprectangleselecttool.h"
#include "gimprectangleselectoptions.h"
#include "gimptoolcontrol.h"
#include "gimp-intl.h"
struct _GimpRectangleSelectToolPrivate
{
GimpChannelOps operation; /* remember for use when modifying */
gboolean use_saved_op; /* use operation or get from options */
gboolean saved_show_selection; /* used to remember existing value */
GimpUndo *undo;
GimpUndo *redo;
gdouble press_x;
gdouble press_y;
GimpToolWidget *widget;
GimpToolWidget *grab_widget;
GList *bindings;
};
static void gimp_rectangle_select_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display);
static void gimp_rectangle_select_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display);
static void gimp_rectangle_select_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_rectangle_select_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static gboolean gimp_rectangle_select_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *display);
static void gimp_rectangle_select_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display);
static void gimp_rectangle_select_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
static gboolean gimp_rectangle_select_tool_select (GimpRectangleSelectTool *rect_tool,
gint x,
gint y,
gint w,
gint h);
static void gimp_rectangle_select_tool_real_select (GimpRectangleSelectTool *rect_tool,
GimpChannelOps operation,
gint x,
gint y,
gint w,
gint h);
static void gimp_rectangle_select_tool_rectangle_response
(GimpToolWidget *widget,
gint response_id,
GimpRectangleSelectTool *rect_tool);
static void gimp_rectangle_select_tool_rectangle_change_complete
(GimpToolWidget *widget,
GimpRectangleSelectTool *rect_tool);
static void gimp_rectangle_select_tool_start (GimpRectangleSelectTool *rect_tool,
GimpDisplay *display);
static void gimp_rectangle_select_tool_commit (GimpRectangleSelectTool *rect_tool);
static void gimp_rectangle_select_tool_halt (GimpRectangleSelectTool *rect_tool);
static GimpChannelOps
gimp_rectangle_select_tool_get_operation (GimpRectangleSelectTool *rect_tool);
static void gimp_rectangle_select_tool_update_option_defaults
(GimpRectangleSelectTool *rect_tool,
gboolean ignore_pending);
static void gimp_rectangle_select_tool_auto_shrink (GimpRectangleSelectTool *rect_tool);
G_DEFINE_TYPE (GimpRectangleSelectTool, gimp_rectangle_select_tool,
GIMP_TYPE_SELECTION_TOOL)
#define parent_class gimp_rectangle_select_tool_parent_class
void
gimp_rectangle_select_tool_register (GimpToolRegisterCallback callback,
gpointer data)
{
(* callback) (GIMP_TYPE_RECTANGLE_SELECT_TOOL,
GIMP_TYPE_RECTANGLE_SELECT_OPTIONS,
gimp_rectangle_select_options_gui,
0,
"gimp-rect-select-tool",
_("Rectangle Select"),
_("Rectangle Select Tool: Select a rectangular region"),
N_("_Rectangle Select"), "R",
NULL, GIMP_HELP_TOOL_RECT_SELECT,
GIMP_ICON_TOOL_RECT_SELECT,
data);
}
static void
gimp_rectangle_select_tool_class_init (GimpRectangleSelectToolClass *klass)
{
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
tool_class->control = gimp_rectangle_select_tool_control;
tool_class->button_press = gimp_rectangle_select_tool_button_press;
tool_class->button_release = gimp_rectangle_select_tool_button_release;
tool_class->motion = gimp_rectangle_select_tool_motion;
tool_class->key_press = gimp_rectangle_select_tool_key_press;
tool_class->oper_update = gimp_rectangle_select_tool_oper_update;
tool_class->cursor_update = gimp_rectangle_select_tool_cursor_update;
klass->select = gimp_rectangle_select_tool_real_select;
g_type_class_add_private (klass, sizeof (GimpRectangleSelectToolPrivate));
}
static void
gimp_rectangle_select_tool_init (GimpRectangleSelectTool *rect_tool)
{
GimpTool *tool = GIMP_TOOL (rect_tool);
rect_tool->private =
G_TYPE_INSTANCE_GET_PRIVATE (rect_tool,
GIMP_TYPE_RECTANGLE_SELECT_TOOL,
GimpRectangleSelectToolPrivate);
gimp_tool_control_set_wants_click (tool->control, TRUE);
gimp_tool_control_set_active_modifiers (tool->control,
GIMP_TOOL_ACTIVE_MODIFIERS_SEPARATE);
gimp_tool_control_set_precision (tool->control,
GIMP_CURSOR_PRECISION_PIXEL_BORDER);
gimp_tool_control_set_tool_cursor (tool->control,
GIMP_TOOL_CURSOR_RECT_SELECT);
gimp_tool_control_set_preserve (tool->control, FALSE);
gimp_tool_control_set_dirty_mask (tool->control,
GIMP_DIRTY_IMAGE_SIZE |
GIMP_DIRTY_SELECTION);
}
static void
gimp_rectangle_select_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display)
{
GimpRectangleSelectTool *rect_tool = GIMP_RECTANGLE_SELECT_TOOL (tool);
switch (action)
{
case GIMP_TOOL_ACTION_PAUSE:
case GIMP_TOOL_ACTION_RESUME:
break;
case GIMP_TOOL_ACTION_HALT:
gimp_rectangle_select_tool_halt (rect_tool);
break;
case GIMP_TOOL_ACTION_COMMIT:
gimp_rectangle_select_tool_commit (rect_tool);
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
gimp_rectangle_select_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display)
{
GimpRectangleSelectTool *rect_tool = GIMP_RECTANGLE_SELECT_TOOL (tool);
GimpRectangleSelectToolPrivate *private = rect_tool->private;
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpRectangleFunction function;
if (tool->display && display != tool->display)
gimp_tool_control (tool, GIMP_TOOL_ACTION_COMMIT, tool->display);
if (gimp_selection_tool_start_edit (GIMP_SELECTION_TOOL (tool),
display, coords))
{
/* In some cases we want to finish the rectangle select tool
* and hand over responsibility to the selection tool
*/
gboolean zero_rect = FALSE;
if (private->widget)
{
gdouble x1, y1, x2, y2;
gimp_tool_rectangle_get_public_rect (GIMP_TOOL_RECTANGLE (private->widget),
&x1, &y1, &x2, &y2);
if (x1 == x2 && y1 == y2)
zero_rect = TRUE;
}
/* Don't commit a zero-size rectangle, it would look like a
* click to commit() and that could anchor the floating
* selection or do other evil things. Instead, simply cancel a
* zero-size rectangle. See bug #796073.
*/
if (zero_rect)
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, display);
else
gimp_tool_control (tool, GIMP_TOOL_ACTION_COMMIT, display);
gimp_rectangle_select_tool_update_option_defaults (rect_tool, TRUE);
return;
}
if (! tool->display)
{
gimp_rectangle_select_tool_start (rect_tool, display);
gimp_tool_widget_hover (private->widget, coords, state, TRUE);
/* HACK: force CREATING on a newly created rectangle; otherwise,
* the above binding of properties would cause the rectangle to
* start with the size from tool options.
*/
gimp_tool_rectangle_set_function (GIMP_TOOL_RECTANGLE (private->widget),
GIMP_TOOL_RECTANGLE_CREATING);
}
private->saved_show_selection = gimp_display_shell_get_show_selection (shell);
/* if the shift or ctrl keys are down, we don't want to adjust, we
* want to create a new rectangle, regardless of pointer loc
*/
if (state & (gimp_get_extend_selection_mask () |
gimp_get_modify_selection_mask ()))
{
gimp_tool_rectangle_set_function (GIMP_TOOL_RECTANGLE (private->widget),
GIMP_TOOL_RECTANGLE_CREATING);
}
if (gimp_tool_widget_button_press (private->widget, coords, time, state,
press_type))
{
private->grab_widget = private->widget;
}
private->press_x = coords->x;
private->press_y = coords->y;
/* if we have an existing rectangle in the current display, then
* we have already "executed", and need to undo at this point,
* unless the user has done something in the meantime
*/
function =
gimp_tool_rectangle_get_function (GIMP_TOOL_RECTANGLE (private->widget));
if (function == GIMP_TOOL_RECTANGLE_CREATING)
{
private->use_saved_op = FALSE;
}
else
{
GimpImage *image = gimp_display_get_image (tool->display);
GimpUndoStack *undo_stack = gimp_image_get_undo_stack (image);
GimpUndoStack *redo_stack = gimp_image_get_redo_stack (image);
GimpUndo *undo;
GimpChannelOps operation;
undo = gimp_undo_stack_peek (undo_stack);
if (undo && private->undo == undo)
{
/* prevent this change from halting the tool */
gimp_tool_control_push_preserve (tool->control, TRUE);
gimp_image_undo (image);
gimp_tool_control_pop_preserve (tool->control);
/* we will need to redo if the user cancels or executes */
private->redo = gimp_undo_stack_peek (redo_stack);
}
/* if the operation is "Replace", turn off the marching ants,
* because they are confusing
*/
operation = gimp_rectangle_select_tool_get_operation (rect_tool);
if (operation == GIMP_CHANNEL_OP_REPLACE)
gimp_display_shell_set_show_selection (shell, FALSE);
}
private->undo = NULL;
gimp_tool_control_activate (tool->control);
}
static void
gimp_rectangle_select_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpRectangleSelectTool *rect_tool = GIMP_RECTANGLE_SELECT_TOOL (tool);
GimpRectangleSelectToolPrivate *priv = rect_tool->private;
GimpImage *image;
image = gimp_display_get_image (tool->display);
gimp_tool_control_halt (tool->control);
gimp_tool_pop_status (tool, display);
gimp_display_shell_set_show_selection (gimp_display_get_shell (display),
priv->saved_show_selection);
/*
* if the user has not moved the mouse, we need to redo the operation
* that was undone on button press.
*/
if (release_type == GIMP_BUTTON_RELEASE_CLICK)
{
GimpUndoStack *redo_stack = gimp_image_get_redo_stack (image);
GimpUndo *redo = gimp_undo_stack_peek (redo_stack);
if (redo && priv->redo == redo)
{
/* prevent this from halting the tool */
gimp_tool_control_push_preserve (tool->control, TRUE);
gimp_image_redo (image);
priv->redo = NULL;
gimp_tool_control_pop_preserve (tool->control);
}
}
if (priv->grab_widget)
{
gimp_tool_widget_button_release (priv->grab_widget,
coords, time, state, release_type);
priv->grab_widget = NULL;
}
if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
{
if (priv->redo)
{
/* prevent this from halting the tool */
gimp_tool_control_push_preserve (tool->control, TRUE);
gimp_image_redo (image);
gimp_tool_control_pop_preserve (tool->control);
}
priv->use_saved_op = TRUE; /* is this correct? */
}
priv->redo = NULL;
}
static void
gimp_rectangle_select_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpRectangleSelectTool *rect_tool = GIMP_RECTANGLE_SELECT_TOOL (tool);
GimpRectangleSelectToolPrivate *priv = rect_tool->private;
if (priv->grab_widget)
{
gimp_tool_widget_motion (priv->grab_widget, coords, time, state);
}
}
static gboolean
gimp_rectangle_select_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *display)
{
GimpRectangleSelectTool *rect_tool = GIMP_RECTANGLE_SELECT_TOOL (tool);
GimpRectangleSelectToolPrivate *priv = rect_tool->private;
if (priv->widget && display == tool->display)
{
if (gimp_tool_widget_key_press (priv->widget, kevent))
return TRUE;
}
return gimp_edit_selection_tool_key_press (tool, kevent, display);
}
static void
gimp_rectangle_select_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpRectangleSelectTool *rect_tool = GIMP_RECTANGLE_SELECT_TOOL (tool);
GimpRectangleSelectToolPrivate *priv = rect_tool->private;
if (priv->widget && display == tool->display)
{
gimp_tool_widget_hover (priv->widget, coords, state, proximity);
}
GIMP_TOOL_CLASS (parent_class)->oper_update (tool, coords, state, proximity,
display);
}
static void
gimp_rectangle_select_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpRectangleSelectTool *rect_tool = GIMP_RECTANGLE_SELECT_TOOL (tool);
GimpRectangleSelectToolPrivate *private = rect_tool->private;
GimpCursorType cursor = GIMP_CURSOR_CROSSHAIR_SMALL;
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
if (private->widget && display == tool->display)
{
gimp_tool_widget_get_cursor (private->widget, coords, state,
&cursor, NULL, &modifier);
}
gimp_tool_control_set_cursor (tool->control, cursor);
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
/* override the previous if shift or ctrl are down */
if (state & (gimp_get_extend_selection_mask () |
gimp_get_modify_selection_mask ()))
{
gimp_tool_control_set_cursor (tool->control,
GIMP_CURSOR_CROSSHAIR_SMALL);
}
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static gboolean
gimp_rectangle_select_tool_select (GimpRectangleSelectTool *rect_tool,
gint x,
gint y,
gint w,
gint h)
{
GimpTool *tool = GIMP_TOOL (rect_tool);
GimpImage *image = gimp_display_get_image (tool->display);
gboolean rectangle_exists;
GimpChannelOps operation;
gimp_tool_pop_status (tool, tool->display);
rectangle_exists = (x <= gimp_image_get_width (image) &&
y <= gimp_image_get_height (image) &&
x + w >= 0 &&
y + h >= 0 &&
w > 0 &&
h > 0);
operation = gimp_rectangle_select_tool_get_operation (rect_tool);
/* if rectangle exists, turn it into a selection */
if (rectangle_exists)
GIMP_RECTANGLE_SELECT_TOOL_GET_CLASS (rect_tool)->select (rect_tool,
operation,
x, y, w, h);
return rectangle_exists;
}
static void
gimp_rectangle_select_tool_real_select (GimpRectangleSelectTool *rect_tool,
GimpChannelOps operation,
gint x,
gint y,
gint w,
gint h)
{
GimpTool *tool = GIMP_TOOL (rect_tool);
GimpSelectionOptions *options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
GimpRectangleSelectOptions *rect_options;
GimpChannel *channel;
rect_options = GIMP_RECTANGLE_SELECT_TOOL_GET_OPTIONS (tool);
channel = gimp_image_get_mask (gimp_display_get_image (tool->display));
if (rect_options->round_corners)
{
/* To prevent elliptification of the rectangle,
* we must cap the corner radius.
*/
gdouble max = MIN (w / 2.0, h / 2.0);
gdouble radius = MIN (rect_options->corner_radius, max);
gimp_channel_select_round_rect (channel,
x, y, w, h,
radius, radius,
operation,
options->antialias,
options->feather,
options->feather_radius,
options->feather_radius,
TRUE);
}
else
{
gimp_channel_select_rectangle (channel,
x, y, w, h,
operation,
options->feather,
options->feather_radius,
options->feather_radius,
TRUE);
}
}
static void
gimp_rectangle_select_tool_rectangle_response (GimpToolWidget *widget,
gint response_id,
GimpRectangleSelectTool *rect_tool)
{
GimpTool *tool = GIMP_TOOL (rect_tool);
GimpRectangleSelectToolPrivate *priv = rect_tool->private;
switch (response_id)
{
case GIMP_TOOL_WIDGET_RESPONSE_CONFIRM:
{
gdouble x1, y1, x2, y2;
gimp_tool_rectangle_get_public_rect (GIMP_TOOL_RECTANGLE (widget),
&x1, &y1, &x2, &y2);
if (x1 == x2 && y1 == y2)
{
/* if there are no extents, we got here because of a
* click, call commit() directly because we might want to
* reconfigure the rectangle and continue, instead of
* HALTing it like calling COMMIT would do
*/
gimp_rectangle_select_tool_commit (rect_tool);
gimp_tool_rectangle_get_public_rect (GIMP_TOOL_RECTANGLE (widget),
&x1, &y1, &x2, &y2);
if (x1 == x2 && y1 == y2)
{
/* if there still is no rectangle after the
* tool_commit(), the click was outside the selection
* and we HALT to get rid of a zero-size tool widget.
*/
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display);
}
}
else
{
gimp_tool_control (tool, GIMP_TOOL_ACTION_COMMIT, tool->display);
}
}
break;
case GIMP_TOOL_WIDGET_RESPONSE_CANCEL:
{
GimpImage *image = gimp_display_get_image (tool->display);
GimpUndoStack *undo_stack = gimp_image_get_undo_stack (image);
GimpUndo *undo = gimp_undo_stack_peek (undo_stack);
/* if we have an existing rectangle in the current display, then
* we have already "executed", and need to undo at this point,
* unless the user has done something in the meantime
*/
if (undo && priv->undo == undo)
{
/* prevent this change from halting the tool */
gimp_tool_control_push_preserve (tool->control, TRUE);
gimp_image_undo (image);
gimp_image_flush (image);
gimp_tool_control_pop_preserve (tool->control);
}
priv->undo = NULL;
priv->redo = NULL;
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display);
}
break;
}
}
static void
gimp_rectangle_select_tool_rectangle_change_complete (GimpToolWidget *widget,
GimpRectangleSelectTool *rect_tool)
{
GimpTool *tool = GIMP_TOOL (rect_tool);
GimpRectangleSelectToolPrivate *priv = rect_tool->private;
/* prevent change in selection from halting the tool */
gimp_tool_control_push_preserve (tool->control, TRUE);
if (tool->display && ! gimp_tool_control_is_active (tool->control))
{
GimpImage *image = gimp_display_get_image (tool->display);
GimpUndoStack *undo_stack = gimp_image_get_undo_stack (image);
GimpUndo *undo = gimp_undo_stack_peek (undo_stack);
gdouble x1, y1, x2, y2;
/* if we got here via button release, we have already undone the
* previous operation. But if we got here by some other means,
* we need to undo it now.
*/
if (undo && priv->undo == undo)
{
gimp_image_undo (image);
priv->undo = NULL;
}
gimp_tool_rectangle_get_public_rect (GIMP_TOOL_RECTANGLE (widget),
&x1, &y1, &x2, &y2);
if (gimp_rectangle_select_tool_select (rect_tool,
x1, y1, x2 - x1, y2 - y1))
{
/* save the undo that we got when executing, but only if
* we actually selected something
*/
priv->undo = gimp_undo_stack_peek (undo_stack);
priv->redo = NULL;
}
if (! priv->use_saved_op)
{
GimpSelectionOptions *options;
options = GIMP_SELECTION_TOOL_GET_OPTIONS (tool);
/* remember the operation now in case we modify the rectangle */
priv->operation = options->operation;
priv->use_saved_op = TRUE;
}
gimp_image_flush (image);
}
gimp_tool_control_pop_preserve (tool->control);
gimp_rectangle_select_tool_update_option_defaults (rect_tool, FALSE);
}
static void
gimp_rectangle_select_tool_start (GimpRectangleSelectTool *rect_tool,
GimpDisplay *display)
{
static const gchar *properties[] =
{
"highlight",
"highlight-opacity",
"guide",
"round-corners",
"corner-radius",
"x",
"y",
"width",
"height",
"fixed-rule-active",
"fixed-rule",
"desired-fixed-width",
"desired-fixed-height",
"desired-fixed-size-width",
"desired-fixed-size-height",
"aspect-numerator",
"aspect-denominator",
"fixed-center"
};
GimpTool *tool = GIMP_TOOL (rect_tool);
GimpRectangleSelectToolPrivate *private = rect_tool->private;
GimpDisplayShell *shell = gimp_display_get_shell (display);
GimpRectangleSelectOptions *options;
GimpToolWidget *widget;
gboolean draw_ellipse;
gint i;
options = GIMP_RECTANGLE_SELECT_TOOL_GET_OPTIONS (rect_tool);
tool->display = display;
private->widget = widget = gimp_tool_rectangle_new (shell);
draw_ellipse = GIMP_RECTANGLE_SELECT_TOOL_GET_CLASS (rect_tool)->draw_ellipse;
g_object_set (widget,
"draw-ellipse", draw_ellipse,
"status-title", draw_ellipse ? _("Ellipse: ") : _("Rectangle: "),
NULL);
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), widget);
for (i = 0; i < G_N_ELEMENTS (properties); i++)
{
GBinding *binding =
g_object_bind_property (G_OBJECT (options), properties[i],
G_OBJECT (widget), properties[i],
G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
private->bindings = g_list_prepend (private->bindings, binding);
}
gimp_rectangle_options_connect (GIMP_RECTANGLE_OPTIONS (options),
gimp_display_get_image (shell->display),
G_CALLBACK (gimp_rectangle_select_tool_auto_shrink),
rect_tool);
g_signal_connect (widget, "response",
G_CALLBACK (gimp_rectangle_select_tool_rectangle_response),
rect_tool);
g_signal_connect (widget, "change-complete",
G_CALLBACK (gimp_rectangle_select_tool_rectangle_change_complete),
rect_tool);
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
}
/* This function is called if the user clicks and releases the left
* button without moving it. There are the 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 there is a floating selection,
* we anchor it.
* 4) If there is no rectangle and we are inside the selection, we
* create a rectangle from the selection bounds.
* 5) If there is no rectangle and we are outside the selection,
* we clear the selection.
*/
static void
gimp_rectangle_select_tool_commit (GimpRectangleSelectTool *rect_tool)
{
GimpTool *tool = GIMP_TOOL (rect_tool);
GimpRectangleSelectToolPrivate *priv = rect_tool->private;
if (priv->widget)
{
gdouble x1, y1, x2, y2;
gint w, h;
gimp_tool_rectangle_get_public_rect (GIMP_TOOL_RECTANGLE (priv->widget),
&x1, &y1, &x2, &y2);
w = x2 - x1;
h = y2 - y1;
if (w == 0 && h == 0)
{
GimpImage *image = gimp_display_get_image (tool->display);
GimpChannel *selection = gimp_image_get_mask (image);
gint press_x;
gint press_y;
if (gimp_image_get_floating_selection (image))
{
floating_sel_anchor (gimp_image_get_floating_selection (image));
gimp_image_flush (image);
return;
}
press_x = ROUND (priv->press_x);
press_y = ROUND (priv->press_y);
/* if the click was inside the marching ants */
if (gimp_pickable_get_opacity_at (GIMP_PICKABLE (selection),
press_x, press_y) > 0.5)
{
gint x, y, w, h;
if (gimp_item_bounds (GIMP_ITEM (selection), &x, &y, &w, &h))
{
g_object_set (priv->widget,
"x1", (gdouble) x,
"y1", (gdouble) y,
"x2", (gdouble) (x + w),
"y2", (gdouble) (y + h),
NULL);
}
gimp_rectangle_select_tool_update_option_defaults (rect_tool,
FALSE);
return;
}
else
{
GimpChannelOps operation;
/* prevent this change from halting the tool */
gimp_tool_control_push_preserve (tool->control, TRUE);
/* We can conceptually think of a click outside of the
* selection as adding a 0px selection. Behave intuitively
* for the current selection mode
*/
operation = gimp_rectangle_select_tool_get_operation (rect_tool);
switch (operation)
{
case GIMP_CHANNEL_OP_REPLACE:
case GIMP_CHANNEL_OP_INTERSECT:
gimp_channel_clear (selection, NULL, TRUE);
gimp_image_flush (image);
break;
case GIMP_CHANNEL_OP_ADD:
case GIMP_CHANNEL_OP_SUBTRACT:
default:
/* Do nothing */
break;
}
gimp_tool_control_pop_preserve (tool->control);
}
}
gimp_rectangle_select_tool_update_option_defaults (rect_tool, FALSE);
}
/* Reset the automatic undo/redo mechanism */
priv->undo = NULL;
priv->redo = NULL;
}
static void
gimp_rectangle_select_tool_halt (GimpRectangleSelectTool *rect_tool)
{
GimpTool *tool = GIMP_TOOL (rect_tool);
GimpRectangleSelectToolPrivate *priv = rect_tool->private;
GimpRectangleSelectOptions *options;
options = GIMP_RECTANGLE_SELECT_TOOL_GET_OPTIONS (rect_tool);
if (tool->display)
{
GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
gimp_display_shell_set_highlight (shell, NULL, 0.0);
gimp_rectangle_options_disconnect (GIMP_RECTANGLE_OPTIONS (options),
G_CALLBACK (gimp_rectangle_select_tool_auto_shrink),
rect_tool);
}
priv->undo = NULL;
priv->redo = NULL;
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tool)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tool));
/* disconnect bindings manually so they are really gone *now*, we
* might be in the middle of a signal emission that keeps the
* widget and its bindings alive.
*/
g_list_free_full (priv->bindings, (GDestroyNotify) g_object_unref);
priv->bindings = NULL;
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tool), NULL);
g_clear_object (&priv->widget);
tool->display = NULL;
gimp_rectangle_select_tool_update_option_defaults (rect_tool, TRUE);
}
static GimpChannelOps
gimp_rectangle_select_tool_get_operation (GimpRectangleSelectTool *rect_tool)
{
GimpRectangleSelectToolPrivate *priv = rect_tool->private;
GimpSelectionOptions *options;
options = GIMP_SELECTION_TOOL_GET_OPTIONS (rect_tool);
if (priv->use_saved_op)
return priv->operation;
else
return options->operation;
}
/**
* gimp_rectangle_select_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_rectangle_select_tool_update_option_defaults (GimpRectangleSelectTool *rect_tool,
gboolean ignore_pending)
{
GimpRectangleSelectToolPrivate *priv = rect_tool->private;
GimpTool *tool = GIMP_TOOL (rect_tool);
GimpRectangleOptions *rect_options;
rect_options = GIMP_RECTANGLE_OPTIONS (gimp_tool_get_options (tool));
if (priv->widget && ! ignore_pending)
{
/* There is a pending rectangle and we should not ignore it, so
* set default Fixed: Size to the same as the current pending
* rectangle width/height.
*/
gimp_tool_rectangle_pending_size_set (GIMP_TOOL_RECTANGLE (priv->widget),
G_OBJECT (rect_options),
"default-aspect-numerator",
"default-aspect-denominator");
g_object_set (G_OBJECT (rect_options),
"use-string-current", TRUE,
NULL);
}
else
{
g_object_set (G_OBJECT (rect_options),
"default-aspect-numerator", 1.0,
"default-aspect-denominator", 1.0,
NULL);
g_object_set (G_OBJECT (rect_options),
"use-string-current", FALSE,
NULL);
}
}
static void
gimp_rectangle_select_tool_auto_shrink (GimpRectangleSelectTool *rect_tool)
{
GimpRectangleSelectToolPrivate *private = rect_tool->private;
gboolean shrink_merged;
g_object_get (gimp_tool_get_options (GIMP_TOOL (rect_tool)),
"shrink-merged", &shrink_merged,
NULL);
gimp_tool_rectangle_auto_shrink (GIMP_TOOL_RECTANGLE (private->widget),
shrink_merged);
}
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