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gimp/app/tools/gimptransformtool.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995-2001 Spencer Kimball, Peter Mattis, and others
*
* 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 <gdk/gdkkeysyms.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.h"
#include "core/gimp.h"
#include "core/gimpboundary.h"
#include "core/gimpdrawable-transform.h"
#include "core/gimperror.h"
#include "core/gimpimage.h"
#include "core/gimpimage-undo.h"
#include "core/gimpimage-undo-push.h"
#include "core/gimpitem-linked.h"
#include "core/gimplayer.h"
#include "core/gimplayermask.h"
#include "core/gimpprogress.h"
#include "core/gimpprojection.h"
#include "core/gimptoolinfo.h"
#include "vectors/gimpvectors.h"
#include "vectors/gimpstroke.h"
#include "widgets/gimpwidgets-utils.h"
#include "display/gimpcanvasitem.h"
#include "display/gimpdisplay.h"
#include "display/gimptoolgui.h"
#include "display/gimptoolwidget.h"
#include "gimptoolcontrol.h"
#include "gimptransformoptions.h"
#include "gimptransformtool.h"
#include "gimptransformtoolundo.h"
#include "gimp-intl.h"
#define RESPONSE_RESET 1
static void gimp_transform_tool_finalize (GObject *object);
static gboolean gimp_transform_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error);
static void gimp_transform_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display);
static void gimp_transform_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display);
static void gimp_transform_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display);
static void gimp_transform_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display);
static gboolean gimp_transform_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *display);
static void gimp_transform_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display);
static void gimp_transform_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display);
static void gimp_transform_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
static const gchar * gimp_transform_tool_get_undo_desc (GimpTool *tool,
GimpDisplay *display);
static const gchar * gimp_transform_tool_get_redo_desc (GimpTool *tool,
GimpDisplay *display);
static gboolean gimp_transform_tool_undo (GimpTool *tool,
GimpDisplay *display);
static gboolean gimp_transform_tool_redo (GimpTool *tool,
GimpDisplay *display);
static void gimp_transform_tool_options_notify (GimpTool *tool,
GimpToolOptions *options,
const GParamSpec *pspec);
static void gimp_transform_tool_draw (GimpDrawTool *draw_tool);
static GeglBuffer *
gimp_transform_tool_real_transform (GimpTransformTool *tr_tool,
GimpItem *item,
GeglBuffer *orig_buffer,
gint orig_offset_x,
gint orig_offset_y,
GimpColorProfile **buffer_profile,
gint *new_offset_x,
gint *new_offset_y);
static void gimp_transform_tool_widget_changed (GimpToolWidget *widget,
GimpTransformTool *tr_tool);
static void gimp_transform_tool_widget_response (GimpToolWidget *widget,
gint response_id,
GimpTransformTool *tr_tool);
static void gimp_transform_tool_widget_snap_offsets (GimpToolWidget *widget,
gint offset_x,
gint offset_y,
gint width,
gint height,
GimpTransformTool *tr_tool);
static void gimp_transform_tool_widget_status (GimpToolWidget *widget,
const gchar *status,
GimpTransformTool *tr_tool);
static void gimp_transform_tool_halt (GimpTransformTool *tr_tool);
static gboolean gimp_transform_tool_bounds (GimpTransformTool *tr_tool,
GimpDisplay *display);
static void gimp_transform_tool_dialog (GimpTransformTool *tr_tool);
static void gimp_transform_tool_dialog_update (GimpTransformTool *tr_tool);
static void gimp_transform_tool_prepare (GimpTransformTool *tr_tool,
GimpDisplay *display);
static GimpToolWidget *
gimp_transform_tool_get_widget (GimpTransformTool *tr_tool);
static void gimp_transform_tool_transform (GimpTransformTool *tr_tool,
GimpDisplay *display);
static void gimp_transform_tool_response (GimpToolGui *gui,
gint response_id,
GimpTransformTool *tr_tool);
static void gimp_transform_tool_update_sensitivity (GimpTransformTool *tr_tool);
static GimpItem *gimp_transform_tool_get_active_item (GimpTransformTool *tr_tool,
GimpImage *image);
static GimpItem *gimp_transform_tool_check_active_item (GimpTransformTool *tr_tool,
GimpImage *display,
gboolean invisible_layer_ok,
GError **error);
static void gimp_transform_tool_hide_active_item (GimpTransformTool *tr_tool,
GimpItem *item);
static void gimp_transform_tool_show_active_item (GimpTransformTool *tr_tool);
static TransInfo * trans_info_new (void);
static void trans_info_free (TransInfo *info);
G_DEFINE_TYPE (GimpTransformTool, gimp_transform_tool, GIMP_TYPE_DRAW_TOOL)
#define parent_class gimp_transform_tool_parent_class
static void
gimp_transform_tool_class_init (GimpTransformToolClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpDrawToolClass *draw_class = GIMP_DRAW_TOOL_CLASS (klass);
object_class->finalize = gimp_transform_tool_finalize;
tool_class->initialize = gimp_transform_tool_initialize;
tool_class->control = gimp_transform_tool_control;
tool_class->button_press = gimp_transform_tool_button_press;
tool_class->button_release = gimp_transform_tool_button_release;
tool_class->motion = gimp_transform_tool_motion;
tool_class->key_press = gimp_transform_tool_key_press;
tool_class->modifier_key = gimp_transform_tool_modifier_key;
tool_class->active_modifier_key = gimp_transform_tool_modifier_key;
tool_class->oper_update = gimp_transform_tool_oper_update;
tool_class->cursor_update = gimp_transform_tool_cursor_update;
tool_class->get_undo_desc = gimp_transform_tool_get_undo_desc;
tool_class->get_redo_desc = gimp_transform_tool_get_redo_desc;
tool_class->undo = gimp_transform_tool_undo;
tool_class->redo = gimp_transform_tool_redo;
tool_class->options_notify = gimp_transform_tool_options_notify;
draw_class->draw = gimp_transform_tool_draw;
klass->dialog = NULL;
klass->dialog_update = NULL;
klass->prepare = NULL;
klass->recalc_matrix = NULL;
klass->get_undo_desc = NULL;
klass->transform = gimp_transform_tool_real_transform;
klass->ok_button_label = _("_Transform");
}
static void
gimp_transform_tool_init (GimpTransformTool *tr_tool)
{
GimpTool *tool = GIMP_TOOL (tr_tool);
gimp_tool_control_set_action_opacity (tool->control,
"tools/tools-transform-preview-opacity-set");
gimp_tool_control_set_scroll_lock (tool->control, TRUE);
gimp_tool_control_set_preserve (tool->control, FALSE);
gimp_tool_control_set_dirty_mask (tool->control,
GIMP_DIRTY_IMAGE_SIZE |
GIMP_DIRTY_DRAWABLE |
GIMP_DIRTY_SELECTION |
GIMP_DIRTY_ACTIVE_DRAWABLE);
gimp_tool_control_set_precision (tool->control,
GIMP_CURSOR_PRECISION_SUBPIXEL);
tr_tool->progress_text = _("Transforming");
gimp_matrix3_identity (&tr_tool->transform);
tr_tool->strokes = g_ptr_array_new ();
}
static void
gimp_transform_tool_finalize (GObject *object)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (object);
if (tr_tool->gui)
{
g_object_unref (tr_tool->gui);
tr_tool->gui = NULL;
}
if (tr_tool->strokes)
{
g_ptr_array_unref (tr_tool->strokes);
tr_tool->strokes = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gimp_transform_tool_initialize (GimpTool *tool,
GimpDisplay *display,
GError **error)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
GimpItem *item;
if (! GIMP_TOOL_CLASS (parent_class)->initialize (tool, display, error))
{
return FALSE;
}
item = gimp_transform_tool_check_active_item (tr_tool, image, FALSE, error);
if (! item)
return FALSE;
if (display != tool->display)
{
gimp_transform_tool_halt (tr_tool);
/* Find the transform bounds for some tools (like scale,
* perspective) that actually need the bounds for initializing
*/
if (! gimp_transform_tool_bounds (tr_tool, display))
{
g_set_error (error, GIMP_ERROR, GIMP_FAILED,
_("The selection does not intersect with the layer."));
return FALSE;
}
/* Set the pointer to the active display */
tool->display = display;
tool->drawable = drawable;
/* Initialize the transform tool dialog */
if (! tr_tool->gui)
gimp_transform_tool_dialog (tr_tool);
/* Inizialize the tool-specific trans_info, and adjust the
* tool dialog
*/
gimp_transform_tool_prepare (tr_tool, display);
/* Recalculate the transform tool */
gimp_transform_tool_recalc_matrix (tr_tool, NULL);
/* Get the on-canvas gui */
tr_tool->widget = gimp_transform_tool_get_widget (tr_tool);
gimp_transform_tool_hide_active_item (tr_tool, item);
/* start drawing the bounding box and handles... */
gimp_draw_tool_start (GIMP_DRAW_TOOL (tool), display);
/* Initialize undo and redo lists */
tr_tool->undo_list = g_list_prepend (NULL, trans_info_new ());
tr_tool->redo_list = NULL;
tr_tool->old_trans_info = g_list_last (tr_tool->undo_list)->data;
tr_tool->prev_trans_info = g_list_first (tr_tool->undo_list)->data;
gimp_transform_tool_update_sensitivity (tr_tool);
/* Save the current transformation info */
memcpy (tr_tool->prev_trans_info, tr_tool->trans_info,
sizeof (TransInfo));
}
return TRUE;
}
static void
gimp_transform_tool_control (GimpTool *tool,
GimpToolAction action,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
switch (action)
{
case GIMP_TOOL_ACTION_PAUSE:
break;
case GIMP_TOOL_ACTION_RESUME:
gimp_transform_tool_bounds (tr_tool, display);
gimp_transform_tool_recalc_matrix (tr_tool, tr_tool->widget);
break;
case GIMP_TOOL_ACTION_HALT:
gimp_transform_tool_halt (tr_tool);
break;
case GIMP_TOOL_ACTION_COMMIT:
gimp_transform_tool_transform (tr_tool, display);
break;
}
GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
}
static void
gimp_transform_tool_button_press (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonPressType press_type,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
if (tr_tool->widget)
{
gimp_tool_widget_hover (tr_tool->widget, coords, state, TRUE);
if (gimp_tool_widget_button_press (tr_tool->widget, coords, time, state,
press_type))
{
tr_tool->grab_widget = tr_tool->widget;
}
}
gimp_tool_control_activate (tool->control);
}
void
gimp_transform_tool_push_internal_undo (GimpTransformTool *tr_tool)
{
g_return_if_fail (GIMP_IS_TRANSFORM_TOOL (tr_tool));
g_return_if_fail (tr_tool->prev_trans_info != NULL);
/* push current state on the undo list and set this state as the
* current state, but avoid doing this if there were no changes
*/
if (memcmp (tr_tool->prev_trans_info, tr_tool->trans_info,
sizeof (TransInfo)) != 0)
{
tr_tool->prev_trans_info = trans_info_new ();
memcpy (tr_tool->prev_trans_info, tr_tool->trans_info,
sizeof (TransInfo));
tr_tool->undo_list = g_list_prepend (tr_tool->undo_list,
tr_tool->prev_trans_info);
/* If we undid anything and started interacting, we have to
* discard the redo history
*/
g_list_free_full (tr_tool->redo_list, (GDestroyNotify) trans_info_free);
tr_tool->redo_list = NULL;
gimp_transform_tool_update_sensitivity (tr_tool);
/* update the undo actions / menu items */
gimp_image_flush (gimp_display_get_image (GIMP_TOOL (tr_tool)->display));
}
}
static void
gimp_transform_tool_button_release (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpButtonReleaseType release_type,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
gimp_tool_control_halt (tool->control);
if (tr_tool->grab_widget)
{
gimp_tool_widget_button_release (tr_tool->grab_widget,
coords, time, state, release_type);
tr_tool->grab_widget = NULL;
}
if (release_type != GIMP_BUTTON_RELEASE_CANCEL)
{
/* This hack is to perform the flip immediately with the flip tool */
if (! tr_tool->widget)
{
gimp_transform_tool_response (NULL, GTK_RESPONSE_OK, tr_tool);
return;
}
/* We're done with an interaction, save it on the undo list */
gimp_transform_tool_push_internal_undo (tr_tool);
}
else
{
/* Restore the last saved state */
memcpy (tr_tool->trans_info, tr_tool->prev_trans_info,
sizeof (TransInfo));
/* reget the selection bounds */
gimp_transform_tool_bounds (tr_tool, display);
/* recalculate the tool's transformation matrix */
gimp_transform_tool_recalc_matrix (tr_tool, tr_tool->widget);
}
}
static void
gimp_transform_tool_motion (GimpTool *tool,
const GimpCoords *coords,
guint32 time,
GdkModifierType state,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
if (tr_tool->grab_widget)
{
gimp_tool_widget_motion (tr_tool->grab_widget, coords, time, state);
}
}
static gboolean
gimp_transform_tool_key_press (GimpTool *tool,
GdkEventKey *kevent,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
if (tr_tool->widget && display == tool->display)
{
return gimp_tool_widget_key_press (tr_tool->widget, kevent);
}
return FALSE;
}
static void
gimp_transform_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool);
if (key == gimp_get_constrain_behavior_mask ())
{
g_object_set (options,
"frompivot-scale", ! options->frompivot_scale,
NULL);
g_object_set (options,
"frompivot-shear", ! options->frompivot_shear,
NULL);
g_object_set (options,
"frompivot-perspective", ! options->frompivot_perspective,
NULL);
}
if (key == gimp_get_extend_selection_mask ())
{
g_object_set (options,
"cornersnap", ! options->cornersnap,
NULL);
g_object_set (options,
"constrain-move", ! options->constrain_move,
NULL);
g_object_set (options,
"constrain-scale", ! options->constrain_scale,
NULL);
g_object_set (options,
"constrain-rotate", ! options->constrain_rotate,
NULL);
g_object_set (options,
"constrain-shear", ! options->constrain_shear,
NULL);
g_object_set (options,
"constrain-perspective", ! options->constrain_perspective,
NULL);
}
}
static void
gimp_transform_tool_oper_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
gboolean proximity,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
if (tr_tool->widget)
{
if (display == tool->display)
{
gimp_tool_widget_hover (tr_tool->widget, coords, state, proximity);
}
}
}
static void
gimp_transform_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
GimpImage *image = gimp_display_get_image (display);
GimpCursorType cursor = GIMP_CURSOR_CROSSHAIR_SMALL;
GimpToolCursorType tool_cursor = GIMP_TOOL_CURSOR_NONE;
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
if (tr_tool->widget)
{
if (display == tool->display)
{
gimp_tool_widget_get_cursor (tr_tool->widget,
coords, state,
&cursor, &tool_cursor, &modifier);
}
}
if (! gimp_transform_tool_check_active_item (tr_tool, image, TRUE, NULL))
modifier = GIMP_CURSOR_MODIFIER_BAD;
gimp_tool_control_set_cursor (tool->control, cursor);
gimp_tool_control_set_tool_cursor (tool->control, tool_cursor);
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static const gchar *
gimp_transform_tool_get_undo_desc (GimpTool *tool,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
if (display != draw_tool->display || ! tr_tool->undo_list ||
! tr_tool->undo_list->next)
return NULL;
return _("Transform Step");
}
static const gchar *
gimp_transform_tool_get_redo_desc (GimpTool *tool,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
if (display != draw_tool->display || ! tr_tool->redo_list)
return NULL;
return _("Transform Step");
}
static gboolean
gimp_transform_tool_undo (GimpTool *tool,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
GList *item;
if (! gimp_transform_tool_get_undo_desc (tool, display))
return FALSE;
item = g_list_next (tr_tool->undo_list);
/* Move prev_trans_info from undo_list to redo_list */
tr_tool->redo_list = g_list_prepend (tr_tool->redo_list,
tr_tool->prev_trans_info);
tr_tool->undo_list = g_list_remove (tr_tool->undo_list,
tr_tool->prev_trans_info);
tr_tool->prev_trans_info = item->data;
/* Restore the previous transformation info */
memcpy (tr_tool->trans_info, tr_tool->prev_trans_info,
sizeof (TransInfo));
/* reget the selection bounds */
gimp_transform_tool_bounds (tr_tool, tool->display);
/* recalculate the tool's transformation matrix */
gimp_transform_tool_recalc_matrix (tr_tool, tr_tool->widget);
return TRUE;
}
static gboolean
gimp_transform_tool_redo (GimpTool *tool,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
GList *item;
if (! gimp_transform_tool_get_redo_desc (tool, display))
return FALSE;
item = tr_tool->redo_list;
/* Move prev_trans_info from redo_list to undo_list */
tr_tool->prev_trans_info = item->data;
tr_tool->undo_list = g_list_prepend (tr_tool->undo_list,
tr_tool->prev_trans_info);
tr_tool->redo_list = g_list_remove (tr_tool->redo_list,
tr_tool->prev_trans_info);
/* Restore the previous transformation info */
memcpy (tr_tool->trans_info, tr_tool->prev_trans_info,
sizeof (TransInfo));
/* reget the selection bounds */
gimp_transform_tool_bounds (tr_tool, tool->display);
/* recalculate the tool's transformation matrix */
gimp_transform_tool_recalc_matrix (tr_tool, tr_tool->widget);
return TRUE;
}
static void
gimp_transform_tool_options_notify (GimpTool *tool,
GimpToolOptions *options,
const GParamSpec *pspec)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
GimpTransformOptions *tr_options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool);
GIMP_TOOL_CLASS (parent_class)->options_notify (tool, options, pspec);
if (! strcmp (pspec->name, "type"))
{
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display);
return;
}
if (! tr_tool->widget)
return;
if (! strcmp (pspec->name, "direction"))
{
/* reget the selection bounds */
gimp_transform_tool_bounds (tr_tool, tool->display);
/* recalculate the tool's transformation matrix */
gimp_transform_tool_recalc_matrix (tr_tool, tr_tool->widget);
}
else if (! strcmp (pspec->name, "show-preview"))
{
if (tr_tool->preview)
{
gboolean show_preview;
show_preview = gimp_transform_options_show_preview (tr_options);
gimp_canvas_item_set_visible (tr_tool->preview, show_preview);
}
}
else if (g_str_has_prefix (pspec->name, "constrain-") ||
g_str_has_prefix (pspec->name, "frompivot-") ||
! strcmp (pspec->name, "fixedpivot") ||
! strcmp (pspec->name, "cornersnap"))
{
gimp_transform_tool_dialog_update (tr_tool);
}
}
static void
gimp_transform_tool_draw (GimpDrawTool *draw_tool)
{
GimpTool *tool = GIMP_TOOL (draw_tool);
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (draw_tool);
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool);
GimpImage *image = gimp_display_get_image (tool->display);
GimpMatrix3 matrix = tr_tool->transform;
GimpCanvasItem *item;
if (options->direction == GIMP_TRANSFORM_BACKWARD)
gimp_matrix3_invert (&matrix);
if (tr_tool->widget)
{
gboolean show_preview = gimp_transform_options_show_preview (options);
tr_tool->preview =
gimp_draw_tool_add_transform_preview (draw_tool,
tool->drawable,
&matrix,
tr_tool->x1,
tr_tool->y1,
tr_tool->x2,
tr_tool->y2,
tr_tool->does_perspective);
g_object_add_weak_pointer (G_OBJECT (tr_tool->preview),
(gpointer) &tr_tool->preview);
gimp_canvas_item_set_visible (tr_tool->preview, show_preview);
g_object_bind_property (G_OBJECT (options), "preview-opacity",
G_OBJECT (tr_tool->preview), "opacity",
G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
GIMP_DRAW_TOOL_CLASS (parent_class)->draw (draw_tool);
}
if (options->type == GIMP_TRANSFORM_TYPE_SELECTION)
{
const GimpBoundSeg *segs_in;
const GimpBoundSeg *segs_out;
gint n_segs_in;
gint n_segs_out;
gimp_channel_boundary (gimp_image_get_mask (image),
&segs_in, &segs_out,
&n_segs_in, &n_segs_out,
0, 0, 0, 0);
if (segs_in)
{
tr_tool->boundary_in =
gimp_draw_tool_add_boundary (draw_tool,
segs_in, n_segs_in,
&matrix,
0, 0);
g_object_add_weak_pointer (G_OBJECT (tr_tool->boundary_in),
(gpointer) &tr_tool->boundary_in);
}
if (segs_out)
{
tr_tool->boundary_out =
gimp_draw_tool_add_boundary (draw_tool,
segs_out, n_segs_out,
&matrix,
0, 0);
g_object_add_weak_pointer (G_OBJECT (tr_tool->boundary_in),
(gpointer) &tr_tool->boundary_out);
}
}
else if (options->type == GIMP_TRANSFORM_TYPE_PATH)
{
GimpVectors *vectors = gimp_image_get_active_vectors (image);
if (vectors)
{
GimpStroke *stroke = NULL;
while ((stroke = gimp_vectors_stroke_get_next (vectors, stroke)))
{
GArray *coords;
gboolean closed;
coords = gimp_stroke_interpolate (stroke, 1.0, &closed);
if (coords && coords->len)
{
item =
gimp_draw_tool_add_strokes (draw_tool,
&g_array_index (coords,
GimpCoords, 0),
coords->len, &matrix, FALSE);
g_ptr_array_add (tr_tool->strokes, item);
g_object_weak_ref (G_OBJECT (item),
(GWeakNotify) g_ptr_array_remove,
tr_tool->strokes);
}
if (coords)
g_array_free (coords, TRUE);
}
}
}
}
static GeglBuffer *
gimp_transform_tool_real_transform (GimpTransformTool *tr_tool,
GimpItem *active_item,
GeglBuffer *orig_buffer,
gint orig_offset_x,
gint orig_offset_y,
GimpColorProfile **buffer_profile,
gint *new_offset_x,
gint *new_offset_y)
{
GimpTool *tool = GIMP_TOOL (tr_tool);
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool);
GimpContext *context = GIMP_CONTEXT (options);
GeglBuffer *ret = NULL;
GimpTransformResize clip = options->clip;
GimpProgress *progress;
progress = gimp_progress_start (GIMP_PROGRESS (tool), FALSE,
"%s", tr_tool->progress_text);
if (orig_buffer)
{
/* this happens when transforming a selection cut out of a
* normal drawable, or the selection
*/
/* always clip the selction and unfloated channels
* so they keep their size
*/
if (GIMP_IS_CHANNEL (active_item) &&
! babl_format_has_alpha (gegl_buffer_get_format (orig_buffer)))
clip = GIMP_TRANSFORM_RESIZE_CLIP;
ret = gimp_drawable_transform_buffer_affine (GIMP_DRAWABLE (active_item),
context,
orig_buffer,
orig_offset_x,
orig_offset_y,
&tr_tool->transform,
options->direction,
options->interpolation,
clip,
buffer_profile,
new_offset_x,
new_offset_y,
progress);
}
else
{
/* this happens for entire drawables, paths and layer groups */
if (gimp_item_get_linked (active_item))
{
gimp_item_linked_transform (active_item, context,
&tr_tool->transform,
options->direction,
options->interpolation,
clip,
progress);
}
else
{
/* always clip layer masks so they keep their size
*/
if (GIMP_IS_CHANNEL (active_item))
clip = GIMP_TRANSFORM_RESIZE_CLIP;
gimp_item_transform (active_item, context,
&tr_tool->transform,
options->direction,
options->interpolation,
clip,
progress);
}
}
if (progress)
gimp_progress_end (progress);
return ret;
}
static void
gimp_transform_tool_transform (GimpTransformTool *tr_tool,
GimpDisplay *display)
{
GimpTool *tool = GIMP_TOOL (tr_tool);
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool);
GimpContext *context = GIMP_CONTEXT (options);
GimpImage *image = gimp_display_get_image (display);
GimpItem *active_item;
GeglBuffer *orig_buffer = NULL;
gint orig_offset_x = 0;
gint orig_offset_y = 0;
GeglBuffer *new_buffer;
gint new_offset_x;
gint new_offset_y;
GimpColorProfile *buffer_profile;
gchar *undo_desc = NULL;
gboolean new_layer = FALSE;
GError *error = NULL;
active_item = gimp_transform_tool_check_active_item (tr_tool, image,
TRUE, &error);
if (! active_item)
{
gimp_tool_message_literal (tool, display, error->message);
g_clear_error (&error);
return;
}
if (tr_tool->gui)
gimp_tool_gui_hide (tr_tool->gui);
gimp_set_busy (display->gimp);
/* undraw the tool before we muck around with the transform matrix */
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tr_tool));
/* We're going to dirty this image, but we want to keep the tool around */
gimp_tool_control_push_preserve (tool->control, TRUE);
undo_desc = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->get_undo_desc (tr_tool);
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_TRANSFORM, undo_desc);
g_free (undo_desc);
switch (options->type)
{
case GIMP_TRANSFORM_TYPE_LAYER:
if (! gimp_viewable_get_children (GIMP_VIEWABLE (tool->drawable)) &&
! gimp_channel_is_empty (gimp_image_get_mask (image)))
{
orig_buffer = gimp_drawable_transform_cut (tool->drawable,
context,
&orig_offset_x,
&orig_offset_y,
&new_layer);
}
break;
case GIMP_TRANSFORM_TYPE_SELECTION:
orig_buffer = g_object_ref (gimp_drawable_get_buffer (GIMP_DRAWABLE (active_item)));
break;
case GIMP_TRANSFORM_TYPE_PATH:
break;
}
/* Send the request for the transformation to the tool...
*/
new_buffer = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->transform (tr_tool,
active_item,
orig_buffer,
orig_offset_x,
orig_offset_y,
&buffer_profile,
&new_offset_x,
&new_offset_y);
if (orig_buffer)
g_object_unref (orig_buffer);
switch (options->type)
{
case GIMP_TRANSFORM_TYPE_LAYER:
if (new_buffer)
{
/* paste the new transformed image to the image...also implement
* undo...
*/
gimp_drawable_transform_paste (tool->drawable,
new_buffer, buffer_profile,
new_offset_x, new_offset_y,
new_layer);
g_object_unref (new_buffer);
}
break;
case GIMP_TRANSFORM_TYPE_SELECTION:
if (new_buffer)
{
gimp_channel_push_undo (GIMP_CHANNEL (active_item), NULL);
gimp_drawable_set_buffer (GIMP_DRAWABLE (active_item),
FALSE, NULL, new_buffer);
g_object_unref (new_buffer);
}
break;
case GIMP_TRANSFORM_TYPE_PATH:
/* Nothing to be done */
break;
}
gimp_image_undo_push (image, GIMP_TYPE_TRANSFORM_TOOL_UNDO,
GIMP_UNDO_TRANSFORM, NULL,
0,
"transform-tool", tr_tool,
NULL);
gimp_image_undo_group_end (image);
/* We're done dirtying the image, and would like to be restarted if
* the image gets dirty while the tool exists
*/
gimp_tool_control_pop_preserve (tool->control);
gimp_unset_busy (display->gimp);
gimp_image_flush (image);
}
static void
gimp_transform_tool_widget_changed (GimpToolWidget *widget,
GimpTransformTool *tr_tool)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
GimpMatrix3 matrix = tr_tool->transform;
gint i;
if (options->direction == GIMP_TRANSFORM_BACKWARD)
gimp_matrix3_invert (&matrix);
if (tr_tool->preview)
{
gimp_canvas_item_begin_change (tr_tool->preview);
g_object_set (tr_tool->preview,
"transform", &matrix,
NULL);
gimp_canvas_item_end_change (tr_tool->preview);
}
if (tr_tool->boundary_in)
{
gimp_canvas_item_begin_change (tr_tool->boundary_in);
g_object_set (tr_tool->boundary_in,
"transform", &matrix,
NULL);
gimp_canvas_item_end_change (tr_tool->boundary_in);
}
if (tr_tool->boundary_out)
{
gimp_canvas_item_begin_change (tr_tool->boundary_out);
g_object_set (tr_tool->boundary_out,
"transform", &matrix,
NULL);
gimp_canvas_item_end_change (tr_tool->boundary_out);
}
for (i = 0; i < tr_tool->strokes->len; i++)
{
GimpCanvasItem *item = g_ptr_array_index (tr_tool->strokes, i);
gimp_canvas_item_begin_change (item);
g_object_set (item,
"transform", &matrix,
NULL);
gimp_canvas_item_end_change (item);
}
}
static void
gimp_transform_tool_widget_response (GimpToolWidget *widget,
gint response_id,
GimpTransformTool *tr_tool)
{
switch (response_id)
{
case GIMP_TOOL_WIDGET_RESPONSE_CONFIRM:
gimp_transform_tool_response (NULL, GTK_RESPONSE_OK, tr_tool);
break;
case GIMP_TOOL_WIDGET_RESPONSE_CANCEL:
gimp_transform_tool_response (NULL, GTK_RESPONSE_CANCEL, tr_tool);
break;
case GIMP_TOOL_WIDGET_RESPONSE_RESET:
gimp_transform_tool_response (NULL, RESPONSE_RESET, tr_tool);
break;
}
}
static void
gimp_transform_tool_widget_snap_offsets (GimpToolWidget *widget,
gint offset_x,
gint offset_y,
gint width,
gint height,
GimpTransformTool *tr_tool)
{
GimpTool *tool = GIMP_TOOL (tr_tool);
gimp_tool_control_set_snap_offsets (tool->control,
offset_x, offset_y,
width, height);
}
static void
gimp_transform_tool_widget_status (GimpToolWidget *widget,
const gchar *status,
GimpTransformTool *tr_tool)
{
GimpTool *tool = GIMP_TOOL (tr_tool);
if (status)
{
gimp_tool_replace_status (tool, tool->display, "%s", status);
}
else
{
gimp_tool_pop_status (tool, tool->display);
}
}
static void
gimp_transform_tool_halt (GimpTransformTool *tr_tool)
{
GimpTool *tool = GIMP_TOOL (tr_tool);
if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (tr_tool)))
gimp_draw_tool_stop (GIMP_DRAW_TOOL (tr_tool));
g_clear_object (&tr_tool->widget);
if (tr_tool->gui)
gimp_tool_gui_hide (tr_tool->gui);
if (tr_tool->redo_list)
{
g_list_free_full (tr_tool->redo_list, (GDestroyNotify) trans_info_free);
tr_tool->redo_list = NULL;
}
if (tr_tool->undo_list)
{
g_list_free_full (tr_tool->undo_list, (GDestroyNotify) trans_info_free);
tr_tool->undo_list = NULL;
tr_tool->prev_trans_info = NULL;
}
gimp_transform_tool_show_active_item (tr_tool);
tool->display = NULL;
tool->drawable = NULL;
}
static gboolean
gimp_transform_tool_bounds (GimpTransformTool *tr_tool,
GimpDisplay *display)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
GimpImage *image = gimp_display_get_image (display);
gboolean non_empty = TRUE;
switch (options->type)
{
case GIMP_TRANSFORM_TYPE_LAYER:
{
GimpDrawable *drawable;
gint offset_x;
gint offset_y;
gint x, y;
gint width, height;
drawable = gimp_image_get_active_drawable (image);
gimp_item_get_offset (GIMP_ITEM (drawable), &offset_x, &offset_y);
non_empty = gimp_item_mask_intersect (GIMP_ITEM (drawable),
&x, &y, &width, &height);
tr_tool->x1 = x + offset_x;
tr_tool->y1 = y + offset_y;
tr_tool->x2 = x + width + offset_x;
tr_tool->y2 = y + height + offset_y;
}
break;
case GIMP_TRANSFORM_TYPE_SELECTION:
{
gimp_item_bounds (GIMP_ITEM (gimp_image_get_mask (image)),
&tr_tool->x1, &tr_tool->y1,
&tr_tool->x2, &tr_tool->y2);
tr_tool->x2 += tr_tool->x1;
tr_tool->y2 += tr_tool->y1;
}
break;
case GIMP_TRANSFORM_TYPE_PATH:
{
GimpChannel *selection = gimp_image_get_mask (image);
/* if selection is not empty, use its bounds to perform the
* transformation of the path
*/
if (! gimp_channel_is_empty (selection))
{
gimp_item_bounds (GIMP_ITEM (selection),
&tr_tool->x1, &tr_tool->y1,
&tr_tool->x2, &tr_tool->y2);
}
else
{
/* without selection, test the emptiness of the path bounds :
* if empty, use the canvas bounds
* else use the path bounds
*/
if (! gimp_item_bounds (GIMP_ITEM (gimp_image_get_active_vectors (image)),
&tr_tool->x1, &tr_tool->y1,
&tr_tool->x2, &tr_tool->y2))
{
tr_tool->x1 = 0;
tr_tool->y1 = 0;
tr_tool->x2 = gimp_image_get_width (image);
tr_tool->y2 = gimp_image_get_height (image);
}
}
tr_tool->x2 += tr_tool->x1;
tr_tool->y2 += tr_tool->y1;
}
break;
}
return non_empty;
}
static void
gimp_transform_tool_dialog (GimpTransformTool *tr_tool)
{
GimpTool *tool = GIMP_TOOL (tr_tool);
GimpToolInfo *tool_info = tool->tool_info;
GimpDisplayShell *shell;
const gchar *ok_button_label;
if (! GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->dialog)
return;
g_return_if_fail (tool->display != NULL);
shell = gimp_display_get_shell (tool->display);
ok_button_label = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->ok_button_label;
tr_tool->gui = gimp_tool_gui_new (tool_info,
NULL, NULL, NULL, NULL,
gtk_widget_get_screen (GTK_WIDGET (shell)),
gimp_widget_get_monitor (GTK_WIDGET (shell)),
TRUE,
_("_Reset"), RESPONSE_RESET,
_("_Cancel"), GTK_RESPONSE_CANCEL,
ok_button_label, GTK_RESPONSE_OK,
NULL);
gimp_tool_gui_set_auto_overlay (tr_tool->gui, TRUE);
gimp_tool_gui_set_default_response (tr_tool->gui, GTK_RESPONSE_OK);
gimp_tool_gui_set_alternative_button_order (tr_tool->gui,
RESPONSE_RESET,
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
g_signal_connect (tr_tool->gui, "response",
G_CALLBACK (gimp_transform_tool_response),
tr_tool);
GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->dialog (tr_tool);
}
static void
gimp_transform_tool_dialog_update (GimpTransformTool *tr_tool)
{
if (tr_tool->gui &&
GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->dialog_update)
{
GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->dialog_update (tr_tool);
}
}
static void
gimp_transform_tool_prepare (GimpTransformTool *tr_tool,
GimpDisplay *display)
{
if (tr_tool->gui)
{
GimpImage *image = gimp_display_get_image (display);
GimpItem *item = gimp_transform_tool_get_active_item (tr_tool, image);
gimp_tool_gui_set_shell (tr_tool->gui, gimp_display_get_shell (display));
gimp_tool_gui_set_viewable (tr_tool->gui, GIMP_VIEWABLE (item));
}
if (GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->prepare)
GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->prepare (tr_tool);
}
static GimpToolWidget *
gimp_transform_tool_get_widget (GimpTransformTool *tr_tool)
{
static const gchar *properties[] =
{
"constrain-move",
"constrain-scale",
"constrain-rotate",
"constrain-shear",
"constrain-perspective",
"frompivot-scale",
"frompivot-shear",
"frompivot-perspective",
"cornersnap",
"fixedpivot"
};
GimpToolWidget *widget = NULL;
if (GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->get_widget)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
gint i;
widget = GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->get_widget (tr_tool);
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tr_tool), widget);
g_object_bind_property (G_OBJECT (options), "grid-type",
G_OBJECT (widget), "guide-type",
G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
g_object_bind_property (G_OBJECT (options), "grid-size",
G_OBJECT (widget), "n-guides",
G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
for (i = 0; i < G_N_ELEMENTS (properties); i++)
g_object_bind_property (G_OBJECT (options), properties[i],
G_OBJECT (widget), properties[i],
G_BINDING_SYNC_CREATE |
G_BINDING_BIDIRECTIONAL);
g_signal_connect (widget, "changed",
G_CALLBACK (gimp_transform_tool_widget_changed),
tr_tool);
g_signal_connect (widget, "response",
G_CALLBACK (gimp_transform_tool_widget_response),
tr_tool);
g_signal_connect (widget, "snap-offsets",
G_CALLBACK (gimp_transform_tool_widget_snap_offsets),
tr_tool);
g_signal_connect (widget, "status",
G_CALLBACK (gimp_transform_tool_widget_status),
tr_tool);
}
return widget;
}
void
gimp_transform_tool_recalc_matrix (GimpTransformTool *tr_tool,
GimpToolWidget *widget)
{
g_return_if_fail (GIMP_IS_TRANSFORM_TOOL (tr_tool));
g_return_if_fail (widget == NULL || GIMP_IS_TOOL_WIDGET (widget));
if (GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->recalc_matrix)
GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->recalc_matrix (tr_tool, widget);
gimp_transform_tool_dialog_update (tr_tool);
if (tr_tool->gui)
gimp_tool_gui_show (tr_tool->gui);
}
static void
gimp_transform_tool_response (GimpToolGui *gui,
gint response_id,
GimpTransformTool *tr_tool)
{
GimpTool *tool = GIMP_TOOL (tr_tool);
GimpDisplay *display = tool->display;
switch (response_id)
{
case RESPONSE_RESET:
/* Move all undo events to redo, and pop off the first
* one as that's the current one, which always sits on
* the undo_list
*/
tr_tool->redo_list =
g_list_remove (g_list_concat (g_list_reverse (tr_tool->undo_list),
tr_tool->redo_list),
tr_tool->old_trans_info);
tr_tool->prev_trans_info = tr_tool->old_trans_info;
tr_tool->undo_list = g_list_prepend (NULL,
tr_tool->prev_trans_info);
gimp_transform_tool_update_sensitivity (tr_tool);
/* Restore the previous transformation info */
memcpy (tr_tool->trans_info, tr_tool->prev_trans_info,
sizeof (TransInfo));
/* reget the selection bounds */
gimp_transform_tool_bounds (tr_tool, display);
/* recalculate the tool's transformation matrix */
gimp_transform_tool_recalc_matrix (tr_tool, tr_tool->widget);
/* update the undo actions / menu items */
gimp_image_flush (gimp_display_get_image (display));
break;
case GTK_RESPONSE_OK:
g_return_if_fail (display != NULL);
gimp_tool_control (tool, GIMP_TOOL_ACTION_COMMIT, display);
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, display);
break;
default:
gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, display);
/* update the undo actions / menu items */
if (display)
gimp_image_flush (gimp_display_get_image (display));
break;
}
}
static void
gimp_transform_tool_update_sensitivity (GimpTransformTool *tr_tool)
{
if (! tr_tool->gui)
return;
gimp_tool_gui_set_response_sensitive (tr_tool->gui, RESPONSE_RESET,
g_list_next (tr_tool->undo_list) != NULL);
}
static GimpItem *
gimp_transform_tool_get_active_item (GimpTransformTool *tr_tool,
GimpImage *image)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
switch (options->type)
{
case GIMP_TRANSFORM_TYPE_LAYER:
return GIMP_ITEM (gimp_image_get_active_drawable (image));
case GIMP_TRANSFORM_TYPE_SELECTION:
{
GimpChannel *selection = gimp_image_get_mask (image);
if (gimp_channel_is_empty (selection))
return NULL;
else
return GIMP_ITEM (selection);
}
case GIMP_TRANSFORM_TYPE_PATH:
return GIMP_ITEM (gimp_image_get_active_vectors (image));
}
return NULL;
}
static GimpItem *
gimp_transform_tool_check_active_item (GimpTransformTool *tr_tool,
GimpImage *image,
gboolean invisible_layer_ok,
GError **error)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
GimpItem *item;
const gchar *null_message = NULL;
const gchar *locked_message = NULL;
item = gimp_transform_tool_get_active_item (tr_tool, image);
switch (options->type)
{
case GIMP_TRANSFORM_TYPE_LAYER:
null_message = _("There is no layer to transform.");
if (item)
{
if (gimp_item_is_content_locked (item))
locked_message = _("The active layer's pixels are locked.");
else if (gimp_item_is_position_locked (item))
locked_message = _("The active layer's position and size are locked.");
/* invisible_layer_ok is such a hack, see bug #759194 */
if (! invisible_layer_ok && ! gimp_item_is_visible (item))
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED,
_("The active layer is not visible."));
return NULL;
}
}
break;
case GIMP_TRANSFORM_TYPE_SELECTION:
null_message = _("There is no selection to transform.");
if (item)
{
/* cannot happen, so don't translate these messages */
if (gimp_item_is_content_locked (item))
locked_message = "The selection's pixels are locked.";
else if (gimp_item_is_position_locked (item))
locked_message = "The selection's position and size are locked.";
}
break;
case GIMP_TRANSFORM_TYPE_PATH:
null_message = _("There is no path to transform.");
if (item)
{
if (gimp_item_is_content_locked (item))
locked_message = _("The active path's strokes are locked.");
else if (gimp_item_is_position_locked (item))
locked_message = _("The active path's position is locked.");
else if (! gimp_vectors_get_n_strokes (GIMP_VECTORS (item)))
locked_message = _("The active path has no strokes.");
}
break;
}
if (! item)
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED, null_message);
return NULL;
}
if (locked_message)
{
g_set_error_literal (error, GIMP_ERROR, GIMP_FAILED, locked_message);
return NULL;
}
return item;
}
static void
gimp_transform_tool_hide_active_item (GimpTransformTool *tr_tool,
GimpItem *item)
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tr_tool);
GimpDisplay *display = GIMP_TOOL (tr_tool)->display;
GimpImage *image = gimp_display_get_image (display);
/* hide only complete layers and channels, not layer masks */
if (options->type == GIMP_TRANSFORM_TYPE_LAYER &&
options->show_preview &&
tr_tool->widget /* not for flip */ &&
GIMP_IS_DRAWABLE (item) &&
! GIMP_IS_LAYER_MASK (item) &&
gimp_item_get_visible (item) &&
gimp_channel_is_empty (gimp_image_get_mask (image)))
{
tr_tool->hidden_item = item;
gimp_item_set_visible (item, FALSE, FALSE);
gimp_projection_flush (gimp_image_get_projection (image));
}
}
static void
gimp_transform_tool_show_active_item (GimpTransformTool *tr_tool)
{
if (tr_tool->hidden_item)
{
GimpDisplay *display = GIMP_TOOL (tr_tool)->display;
GimpImage *image = gimp_display_get_image (display);
gimp_item_set_visible (tr_tool->hidden_item, TRUE, FALSE);
tr_tool->hidden_item = NULL;
gimp_image_flush (image);
}
}
static TransInfo *
trans_info_new (void)
{
return g_slice_new0 (TransInfo);
}
static void
trans_info_free (TransInfo *info)
{
g_slice_free (TransInfo, info);
}
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