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3841d3d5378173aabdd0d79a25b8cb08ca3591fb
gimp/app/tools/gimptransformtool.c
Jehan 3841d3d537 Bug 795185 - "Show image preview" works differently if checked before... 
... or during rotation.
If checked before rotation, it works as expected, i.e. one sees only the
original or the rotated image.
While rotation is in progress: if unchecked, one sees neither the
original nor the image preview; if checked, one sees both original and
rotated preview.
Let's make the behavior consistent and only show exactly one version at
all time.
2018-04-12 10:03:13 +02:00

1556 lines
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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 void gimp_transform_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display);
static void gimp_transform_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display);
static const gchar * gimp_transform_tool_can_undo (GimpTool *tool,
GimpDisplay *display);
static const gchar * gimp_transform_tool_can_redo (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_halt (GimpTransformTool *tr_tool);
static void gimp_transform_tool_commit (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_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->modifier_key = gimp_transform_tool_modifier_key;
tool_class->cursor_update = gimp_transform_tool_cursor_update;
tool_class->can_undo = gimp_transform_tool_can_undo;
tool_class->can_redo = gimp_transform_tool_can_redo;
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_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_active_modifiers (tool->control,
GIMP_TOOL_ACTIVE_MODIFIERS_SAME);
gimp_tool_control_set_precision (tool->control,
GIMP_CURSOR_PRECISION_SUBPIXEL);
gimp_tool_control_set_cursor (tool->control,
GIMP_CURSOR_CROSSHAIR_SMALL);
gimp_tool_control_set_action_opacity (tool->control,
"tools/tools-transform-preview-opacity-set");
tr_tool->progress_text = _("Transforming");
gimp_matrix3_identity (&tr_tool->transform);
tr_tool->transform_valid = TRUE;
tr_tool->strokes = g_ptr_array_new ();
}
static void
gimp_transform_tool_finalize (GObject *object)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (object);
g_clear_object (&tr_tool->gui);
g_clear_pointer (&tr_tool->strokes, g_ptr_array_unref);
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;
item = gimp_transform_tool_check_active_item (tr_tool, image, FALSE, error);
if (! item)
return FALSE;
/* 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;
}
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:
if (tool->display)
gimp_transform_tool_commit (tr_tool);
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 void
gimp_transform_tool_modifier_key (GimpTool *tool,
GdkModifierType key,
gboolean press,
GdkModifierType state,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
if (tr_tool->widget)
{
GIMP_TOOL_CLASS (parent_class)->modifier_key (tool, key, press,
state, display);
}
else
{
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool);
if (key == gimp_get_constrain_behavior_mask ())
{
g_object_set (options,
"frompivot-scale", ! options->frompivot_scale,
"frompivot-shear", ! options->frompivot_shear,
"frompivot-perspective", ! options->frompivot_perspective,
NULL);
}
else if (key == gimp_get_extend_selection_mask ())
{
g_object_set (options,
"cornersnap", ! options->cornersnap,
"constrain-move", ! options->constrain_move,
"constrain-scale", ! options->constrain_scale,
"constrain-rotate", ! options->constrain_rotate,
"constrain-shear", ! options->constrain_shear,
"constrain-perspective", ! options->constrain_perspective,
NULL);
}
}
}
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);
if (! gimp_transform_tool_check_active_item (tr_tool, image, TRUE, NULL))
{
gimp_tool_set_cursor (tool, display,
gimp_tool_control_get_cursor (tool->control),
gimp_tool_control_get_tool_cursor (tool->control),
GIMP_CURSOR_MODIFIER_BAD);
return;
}
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static const gchar *
gimp_transform_tool_can_undo (GimpTool *tool,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
if (! tr_tool->undo_list || ! tr_tool->undo_list->next)
return NULL;
return _("Transform Step");
}
static const gchar *
gimp_transform_tool_can_redo (GimpTool *tool,
GimpDisplay *display)
{
GimpTransformTool *tr_tool = GIMP_TRANSFORM_TOOL (tool);
if (! 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;
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;
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)
{
GimpDisplay *display;
GimpImage *image;
GimpItem *item;
gboolean show_preview;
show_preview = gimp_transform_options_show_preview (tr_options) &&
tr_tool->transform_valid;
gimp_canvas_item_set_visible (tr_tool->preview, show_preview);
display = tool->display;
image = gimp_display_get_image (display);
item = gimp_transform_tool_check_active_item (tr_tool, image, TRUE, NULL);
if (item)
{
if (show_preview)
gimp_transform_tool_hide_active_item (tr_tool, item);
else
gimp_transform_tool_show_active_item (tr_tool);
}
}
}
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->transform_valid;
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);
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);
gimp_canvas_item_set_visible (tr_tool->boundary_in,
tr_tool->transform_valid);
}
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);
gimp_canvas_item_set_visible (tr_tool->boundary_out,
tr_tool->transform_valid);
}
}
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);
gimp_canvas_item_set_visible (item, tr_tool->transform_valid);
}
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 selection 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_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)
{
gboolean show_preview = gimp_transform_options_show_preview (options) &&
tr_tool->transform_valid;
gimp_canvas_item_begin_change (tr_tool->preview);
gimp_canvas_item_set_visible (tr_tool->preview, show_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);
gimp_canvas_item_set_visible (tr_tool->boundary_in,
tr_tool->transform_valid);
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);
gimp_canvas_item_set_visible (tr_tool->boundary_out,
tr_tool->transform_valid);
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);
gimp_canvas_item_set_visible (item, tr_tool->transform_valid);
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_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));
gimp_draw_tool_set_widget (GIMP_DRAW_TOOL (tr_tool), NULL);
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 void
gimp_transform_tool_commit (GimpTransformTool *tr_tool)
{
GimpTool *tool = GIMP_TOOL (tr_tool);
GimpTransformOptions *options = GIMP_TRANSFORM_TOOL_GET_OPTIONS (tool);
GimpContext *context = GIMP_CONTEXT (options);
GimpDisplay *display = tool->display;
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->transform_valid)
{
gimp_tool_message_literal (tool, display,
_("The current transform is invalid"));
return;
}
if (tr_tool->gui)
gimp_tool_gui_hide (tr_tool->gui);
if (GIMP_TRANSFORM_TOOL_GET_CLASS (tr_tool)->recalc_matrix &&
gimp_matrix3_is_identity (&tr_tool->transform))
{
/* No need to commit an identity transformation! */
return;
}
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 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);
}
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);
gimp_transform_tool_update_sensitivity (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);
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, GTK_RESPONSE_OK,
tr_tool->transform_valid);
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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