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-rw-r--r--app/tools/gimpwarptool.c1484
1 files changed, 1484 insertions, 0 deletions
diff --git a/app/tools/gimpwarptool.c b/app/tools/gimpwarptool.c
new file mode 100644
index 0000000..c76f950
--- /dev/null
+++ b/app/tools/gimpwarptool.c
@@ -0,0 +1,1484 @@
+/* GIMP - The GNU Image Manipulation Program
+ *
+ * gimpwarptool.c
+ * Copyright (C) 2011 Michael Muré <batolettre@gmail.com>
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gegl-plugin.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+
+#include "libgimpmath/gimpmath.h"
+#include "libgimpwidgets/gimpwidgets.h"
+
+#include "tools-types.h"
+
+#include "config/gimpdisplayconfig.h"
+#include "config/gimpguiconfig.h"
+
+#include "gegl/gimp-gegl-apply-operation.h"
+
+#include "core/gimp.h"
+#include "core/gimpchannel.h"
+#include "core/gimpdrawablefilter.h"
+#include "core/gimpimage.h"
+#include "core/gimplayer.h"
+#include "core/gimpprogress.h"
+#include "core/gimpprojection.h"
+#include "core/gimpsubprogress.h"
+#include "core/gimptoolinfo.h"
+
+#include "widgets/gimphelp-ids.h"
+#include "widgets/gimpwidgets-utils.h"
+
+#include "display/gimpdisplay.h"
+
+#include "gimpwarptool.h"
+#include "gimpwarpoptions.h"
+#include "gimptoolcontrol.h"
+#include "gimptools-utils.h"
+
+#include "gimp-intl.h"
+
+
+#define STROKE_TIMER_MAX_FPS 20
+#define PREVIEW_SAMPLER GEGL_SAMPLER_NEAREST
+
+
+static void gimp_warp_tool_constructed (GObject *object);
+
+static void gimp_warp_tool_control (GimpTool *tool,
+ GimpToolAction action,
+ GimpDisplay *display);
+static void gimp_warp_tool_button_press (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonPressType press_type,
+ GimpDisplay *display);
+static void gimp_warp_tool_button_release (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonReleaseType release_type,
+ GimpDisplay *display);
+static void gimp_warp_tool_motion (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpDisplay *display);
+static gboolean gimp_warp_tool_key_press (GimpTool *tool,
+ GdkEventKey *kevent,
+ GimpDisplay *display);
+static void gimp_warp_tool_oper_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ gboolean proximity,
+ GimpDisplay *display);
+static void gimp_warp_tool_cursor_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ GimpDisplay *display);
+const gchar * gimp_warp_tool_can_undo (GimpTool *tool,
+ GimpDisplay *display);
+const gchar * gimp_warp_tool_can_redo (GimpTool *tool,
+ GimpDisplay *display);
+static gboolean gimp_warp_tool_undo (GimpTool *tool,
+ GimpDisplay *display);
+static gboolean gimp_warp_tool_redo (GimpTool *tool,
+ GimpDisplay *display);
+static void gimp_warp_tool_options_notify (GimpTool *tool,
+ GimpToolOptions *options,
+ const GParamSpec *pspec);
+
+static void gimp_warp_tool_draw (GimpDrawTool *draw_tool);
+
+static void gimp_warp_tool_cursor_notify (GimpDisplayConfig *config,
+ GParamSpec *pspec,
+ GimpWarpTool *wt);
+
+static gboolean gimp_warp_tool_can_stroke (GimpWarpTool *wt,
+ GimpDisplay *display,
+ gboolean show_message);
+
+static gboolean gimp_warp_tool_start (GimpWarpTool *wt,
+ GimpDisplay *display);
+static void gimp_warp_tool_halt (GimpWarpTool *wt);
+static void gimp_warp_tool_commit (GimpWarpTool *wt);
+
+static void gimp_warp_tool_start_stroke_timer (GimpWarpTool *wt);
+static void gimp_warp_tool_stop_stroke_timer (GimpWarpTool *wt);
+static gboolean gimp_warp_tool_stroke_timer (GimpWarpTool *wt);
+
+static void gimp_warp_tool_create_graph (GimpWarpTool *wt);
+static void gimp_warp_tool_create_filter (GimpWarpTool *wt,
+ GimpDrawable *drawable);
+static void gimp_warp_tool_set_sampler (GimpWarpTool *wt,
+ gboolean commit);
+static GeglRectangle
+ gimp_warp_tool_get_stroke_bounds (GeglNode *node);
+static GeglRectangle gimp_warp_tool_get_node_bounds (GeglNode *node);
+static void gimp_warp_tool_clear_node_bounds (GeglNode *node);
+static GeglRectangle gimp_warp_tool_get_invalidated_by_change (GimpWarpTool *wt,
+ const GeglRectangle *area);
+static void gimp_warp_tool_update_bounds (GimpWarpTool *wt);
+static void gimp_warp_tool_update_area (GimpWarpTool *wt,
+ const GeglRectangle *area,
+ gboolean synchronous);
+static void gimp_warp_tool_update_stroke (GimpWarpTool *wt,
+ GeglNode *node);
+static void gimp_warp_tool_stroke_append (GimpWarpTool *wt,
+ gchar type,
+ gdouble x,
+ gdouble y);
+static void gimp_warp_tool_filter_flush (GimpDrawableFilter *filter,
+ GimpTool *tool);
+static void gimp_warp_tool_add_op (GimpWarpTool *wt,
+ GeglNode *op);
+static void gimp_warp_tool_remove_op (GimpWarpTool *wt,
+ GeglNode *op);
+static void gimp_warp_tool_free_op (GeglNode *op);
+
+static void gimp_warp_tool_animate (GimpWarpTool *wt);
+
+
+G_DEFINE_TYPE (GimpWarpTool, gimp_warp_tool, GIMP_TYPE_DRAW_TOOL)
+
+#define parent_class gimp_warp_tool_parent_class
+
+
+void
+gimp_warp_tool_register (GimpToolRegisterCallback callback,
+ gpointer data)
+{
+ (* callback) (GIMP_TYPE_WARP_TOOL,
+ GIMP_TYPE_WARP_OPTIONS,
+ gimp_warp_options_gui,
+ 0,
+ "gimp-warp-tool",
+ _("Warp Transform"),
+ _("Warp Transform: Deform with different tools"),
+ N_("_Warp Transform"), "W",
+ NULL, GIMP_HELP_TOOL_WARP,
+ GIMP_ICON_TOOL_WARP,
+ data);
+}
+
+static void
+gimp_warp_tool_class_init (GimpWarpToolClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
+ GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
+
+ object_class->constructed = gimp_warp_tool_constructed;
+
+ tool_class->control = gimp_warp_tool_control;
+ tool_class->button_press = gimp_warp_tool_button_press;
+ tool_class->button_release = gimp_warp_tool_button_release;
+ tool_class->motion = gimp_warp_tool_motion;
+ tool_class->key_press = gimp_warp_tool_key_press;
+ tool_class->oper_update = gimp_warp_tool_oper_update;
+ tool_class->cursor_update = gimp_warp_tool_cursor_update;
+ tool_class->can_undo = gimp_warp_tool_can_undo;
+ tool_class->can_redo = gimp_warp_tool_can_redo;
+ tool_class->undo = gimp_warp_tool_undo;
+ tool_class->redo = gimp_warp_tool_redo;
+ tool_class->options_notify = gimp_warp_tool_options_notify;
+
+ draw_tool_class->draw = gimp_warp_tool_draw;
+}
+
+static void
+gimp_warp_tool_init (GimpWarpTool *self)
+{
+ GimpTool *tool = GIMP_TOOL (self);
+
+ gimp_tool_control_set_motion_mode (tool->control, GIMP_MOTION_MODE_EXACT);
+ 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 |
+ GIMP_DIRTY_DRAWABLE |
+ GIMP_DIRTY_SELECTION |
+ GIMP_DIRTY_ACTIVE_DRAWABLE);
+ gimp_tool_control_set_dirty_action (tool->control,
+ GIMP_TOOL_ACTION_COMMIT);
+ gimp_tool_control_set_wants_click (tool->control, TRUE);
+ gimp_tool_control_set_precision (tool->control,
+ GIMP_CURSOR_PRECISION_SUBPIXEL);
+ gimp_tool_control_set_tool_cursor (tool->control,
+ GIMP_TOOL_CURSOR_WARP);
+ gimp_tool_control_set_action_size (tool->control,
+ "tools/tools-warp-effect-size-set");
+ gimp_tool_control_set_action_hardness (tool->control,
+ "tools/tools-warp-effect-hardness-set");
+
+ self->show_cursor = TRUE;
+ self->draw_brush = TRUE;
+ self->snap_brush = FALSE;
+}
+
+static void
+gimp_warp_tool_constructed (GObject *object)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (object);
+ GimpTool *tool = GIMP_TOOL (object);
+ GimpDisplayConfig *display_config;
+
+ G_OBJECT_CLASS (parent_class)->constructed (object);
+
+ display_config = GIMP_DISPLAY_CONFIG (tool->tool_info->gimp->config);
+
+ wt->show_cursor = display_config->show_paint_tool_cursor;
+ wt->draw_brush = display_config->show_brush_outline;
+ wt->snap_brush = display_config->snap_brush_outline;
+
+ g_signal_connect_object (display_config, "notify::show-paint-tool-cursor",
+ G_CALLBACK (gimp_warp_tool_cursor_notify),
+ wt, 0);
+ g_signal_connect_object (display_config, "notify::show-brush-outline",
+ G_CALLBACK (gimp_warp_tool_cursor_notify),
+ wt, 0);
+ g_signal_connect_object (display_config, "notify::snap-brush-outline",
+ G_CALLBACK (gimp_warp_tool_cursor_notify),
+ wt, 0);
+}
+
+static void
+gimp_warp_tool_control (GimpTool *tool,
+ GimpToolAction action,
+ GimpDisplay *display)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (tool);
+
+ switch (action)
+ {
+ case GIMP_TOOL_ACTION_PAUSE:
+ case GIMP_TOOL_ACTION_RESUME:
+ break;
+
+ case GIMP_TOOL_ACTION_HALT:
+ gimp_warp_tool_halt (wt);
+ break;
+
+ case GIMP_TOOL_ACTION_COMMIT:
+ gimp_warp_tool_commit (wt);
+ break;
+ }
+
+ GIMP_TOOL_CLASS (parent_class)->control (tool, action, display);
+}
+
+static void
+gimp_warp_tool_button_press (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonPressType press_type,
+ GimpDisplay *display)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (tool);
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
+ GeglNode *new_op;
+ gint off_x, off_y;
+
+ if (tool->display && display != tool->display)
+ gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, tool->display);
+
+ if (! tool->display)
+ {
+ if (! gimp_warp_tool_start (wt, display))
+ return;
+ }
+
+ if (! gimp_warp_tool_can_stroke (wt, display, TRUE))
+ return;
+
+ wt->current_stroke = gegl_path_new ();
+
+ wt->last_pos.x = coords->x;
+ wt->last_pos.y = coords->y;
+
+ wt->total_dist = 0.0;
+
+ new_op = gegl_node_new_child (NULL,
+ "operation", "gegl:warp",
+ "behavior", options->behavior,
+ "size", options->effect_size,
+ "hardness", options->effect_hardness / 100.0,
+ "strength", options->effect_strength,
+ /* we implement spacing manually.
+ * anything > 1 will do.
+ */
+ "spacing", 10.0,
+ "stroke", wt->current_stroke,
+ NULL);
+
+ gimp_warp_tool_add_op (wt, new_op);
+ g_object_unref (new_op);
+
+ gimp_item_get_offset (GIMP_ITEM (tool->drawable), &off_x, &off_y);
+
+ gimp_warp_tool_stroke_append (wt,
+ 'M', wt->last_pos.x - off_x,
+ wt->last_pos.y - off_y);
+
+ gimp_warp_tool_start_stroke_timer (wt);
+
+ gimp_tool_control_activate (tool->control);
+}
+
+void
+gimp_warp_tool_button_release (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpButtonReleaseType release_type,
+ GimpDisplay *display)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (tool);
+
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (wt));
+
+ gimp_tool_control_halt (tool->control);
+
+ gimp_warp_tool_stop_stroke_timer (wt);
+
+#ifdef WARP_DEBUG
+ g_printerr ("%s\n", gegl_path_to_string (wt->current_stroke));
+#endif
+
+ g_clear_object (&wt->current_stroke);
+
+ if (release_type == GIMP_BUTTON_RELEASE_CANCEL)
+ {
+ gimp_warp_tool_undo (tool, display);
+
+ /* the just undone stroke has no business on the redo stack */
+ gimp_warp_tool_free_op (wt->redo_stack->data);
+ wt->redo_stack = g_list_remove_link (wt->redo_stack, wt->redo_stack);
+ }
+ else
+ {
+ if (wt->redo_stack)
+ {
+ /* the redo stack becomes invalid by actually doing a stroke */
+ g_list_free_full (wt->redo_stack,
+ (GDestroyNotify) gimp_warp_tool_free_op);
+ wt->redo_stack = NULL;
+ }
+
+ gimp_tool_push_status (tool, tool->display,
+ _("Press ENTER to commit the transform"));
+ }
+
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
+
+ /* update the undo actions / menu items */
+ gimp_image_flush (gimp_display_get_image (GIMP_TOOL (wt)->display));
+}
+
+static void
+gimp_warp_tool_motion (GimpTool *tool,
+ const GimpCoords *coords,
+ guint32 time,
+ GdkModifierType state,
+ GimpDisplay *display)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (tool);
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
+ GimpVector2 old_cursor_pos;
+ GimpVector2 delta;
+ gdouble dist;
+ gdouble step;
+ gboolean stroke_changed = FALSE;
+
+ if (! wt->snap_brush)
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (wt));
+
+ old_cursor_pos = wt->cursor_pos;
+
+ wt->cursor_pos.x = coords->x;
+ wt->cursor_pos.y = coords->y;
+
+ gimp_vector2_sub (&delta, &wt->cursor_pos, &old_cursor_pos);
+ dist = gimp_vector2_length (&delta);
+
+ step = options->effect_size * options->stroke_spacing / 100.0;
+
+ while (wt->total_dist + dist >= step)
+ {
+ gdouble diff = step - wt->total_dist;
+
+ gimp_vector2_mul (&delta, diff / dist);
+ gimp_vector2_add (&old_cursor_pos, &old_cursor_pos, &delta);
+
+ gimp_vector2_sub (&delta, &wt->cursor_pos, &old_cursor_pos);
+ dist -= diff;
+
+ wt->last_pos = old_cursor_pos;
+ wt->total_dist = 0.0;
+
+ if (options->stroke_during_motion)
+ {
+ gint off_x, off_y;
+
+ if (! stroke_changed)
+ {
+ stroke_changed = TRUE;
+
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
+ }
+
+ gimp_item_get_offset (GIMP_ITEM (tool->drawable), &off_x, &off_y);
+
+ gimp_warp_tool_stroke_append (wt,
+ 'L', wt->last_pos.x - off_x,
+ wt->last_pos.y - off_y);
+ }
+ }
+
+ wt->total_dist += dist;
+
+ if (stroke_changed)
+ {
+ gimp_warp_tool_start_stroke_timer (wt);
+
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
+ }
+
+ if (! wt->snap_brush)
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (wt));
+}
+
+static gboolean
+gimp_warp_tool_key_press (GimpTool *tool,
+ GdkEventKey *kevent,
+ GimpDisplay *display)
+{
+ switch (kevent->keyval)
+ {
+ case GDK_KEY_BackSpace:
+ return TRUE;
+
+ case GDK_KEY_Return:
+ case GDK_KEY_KP_Enter:
+ case GDK_KEY_ISO_Enter:
+ gimp_tool_control (tool, GIMP_TOOL_ACTION_COMMIT, display);
+ return TRUE;
+
+ case GDK_KEY_Escape:
+ gimp_tool_control (tool, GIMP_TOOL_ACTION_HALT, display);
+ return TRUE;
+
+ default:
+ break;
+ }
+
+ return FALSE;
+}
+
+static void
+gimp_warp_tool_oper_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ gboolean proximity,
+ GimpDisplay *display)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (tool);
+ GimpDrawTool *draw_tool = GIMP_DRAW_TOOL (tool);
+
+ if (proximity)
+ {
+ gimp_draw_tool_pause (draw_tool);
+
+ if (! tool->display || display == tool->display)
+ {
+ wt->cursor_pos.x = coords->x;
+ wt->cursor_pos.y = coords->y;
+
+ wt->last_pos = wt->cursor_pos;
+ }
+
+ if (! gimp_draw_tool_is_active (draw_tool))
+ gimp_draw_tool_start (draw_tool, display);
+
+ gimp_draw_tool_resume (draw_tool);
+ }
+ else if (gimp_draw_tool_is_active (draw_tool))
+ {
+ gimp_draw_tool_stop (draw_tool);
+ }
+}
+
+static void
+gimp_warp_tool_cursor_update (GimpTool *tool,
+ const GimpCoords *coords,
+ GdkModifierType state,
+ GimpDisplay *display)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (tool);
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (tool);
+ GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_NONE;
+
+ if (! gimp_warp_tool_can_stroke (wt, display, FALSE))
+ {
+ modifier = GIMP_CURSOR_MODIFIER_BAD;
+ }
+ else if (display == tool->display)
+ {
+#if 0
+ /* FIXME have better cursors */
+
+ switch (options->behavior)
+ {
+ case GIMP_WARP_BEHAVIOR_MOVE:
+ case GIMP_WARP_BEHAVIOR_GROW:
+ case GIMP_WARP_BEHAVIOR_SHRINK:
+ case GIMP_WARP_BEHAVIOR_SWIRL_CW:
+ case GIMP_WARP_BEHAVIOR_SWIRL_CCW:
+ case GIMP_WARP_BEHAVIOR_ERASE:
+ case GIMP_WARP_BEHAVIOR_SMOOTH:
+ modifier = GIMP_CURSOR_MODIFIER_MOVE;
+ break;
+ }
+#else
+ (void) options;
+#endif
+ }
+
+ if (! wt->show_cursor && modifier != GIMP_CURSOR_MODIFIER_BAD)
+ {
+ gimp_tool_set_cursor (tool, display,
+ GIMP_CURSOR_NONE,
+ GIMP_TOOL_CURSOR_NONE,
+ GIMP_CURSOR_MODIFIER_NONE);
+ return;
+ }
+
+ gimp_tool_control_set_cursor_modifier (tool->control, modifier);
+
+ GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
+}
+
+const gchar *
+gimp_warp_tool_can_undo (GimpTool *tool,
+ GimpDisplay *display)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (tool);
+ GeglNode *to_delete;
+ const gchar *type;
+
+ if (! wt->render_node)
+ return NULL;
+
+ to_delete = gegl_node_get_producer (wt->render_node, "aux", NULL);
+ type = gegl_node_get_operation (to_delete);
+
+ if (strcmp (type, "gegl:warp"))
+ return NULL;
+
+ return _("Warp Tool Stroke");
+}
+
+const gchar *
+gimp_warp_tool_can_redo (GimpTool *tool,
+ GimpDisplay *display)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (tool);
+
+ if (! wt->render_node || ! wt->redo_stack)
+ return NULL;
+
+ return _("Warp Tool Stroke");
+}
+
+static gboolean
+gimp_warp_tool_undo (GimpTool *tool,
+ GimpDisplay *display)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (tool);
+ GeglNode *to_delete;
+ GeglNode *prev_node;
+
+ to_delete = gegl_node_get_producer (wt->render_node, "aux", NULL);
+
+ wt->redo_stack = g_list_prepend (wt->redo_stack, to_delete);
+
+ /* we connect render_node to the previous node, but keep the current node
+ * in the graph, connected to the previous node as well, so that it doesn't
+ * get invalidated and maintains its cache. this way, redoing it doesn't
+ * require reprocessing.
+ */
+ prev_node = gegl_node_get_producer (to_delete, "input", NULL);
+
+ gegl_node_connect_to (prev_node, "output",
+ wt->render_node, "aux");
+
+ gimp_warp_tool_update_bounds (wt);
+ gimp_warp_tool_update_stroke (wt, to_delete);
+
+ return TRUE;
+}
+
+static gboolean
+gimp_warp_tool_redo (GimpTool *tool,
+ GimpDisplay *display)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (tool);
+ GeglNode *to_add;
+
+ to_add = wt->redo_stack->data;
+
+ gegl_node_connect_to (to_add, "output",
+ wt->render_node, "aux");
+
+ wt->redo_stack = g_list_remove_link (wt->redo_stack, wt->redo_stack);
+
+ gimp_warp_tool_update_bounds (wt);
+ gimp_warp_tool_update_stroke (wt, to_add);
+
+ return TRUE;
+}
+
+static void
+gimp_warp_tool_options_notify (GimpTool *tool,
+ GimpToolOptions *options,
+ const GParamSpec *pspec)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (tool);
+ GimpWarpOptions *wt_options = GIMP_WARP_OPTIONS (options);
+
+ GIMP_TOOL_CLASS (parent_class)->options_notify (tool, options, pspec);
+
+ if (! strcmp (pspec->name, "effect-size"))
+ {
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
+ }
+ else if (! strcmp (pspec->name, "interpolation"))
+ {
+ gimp_warp_tool_set_sampler (wt, /* commit = */ FALSE);
+ }
+ else if (! strcmp (pspec->name, "abyss-policy"))
+ {
+ if (wt->render_node)
+ {
+ gegl_node_set (wt->render_node,
+ "abyss-policy", wt_options->abyss_policy,
+ NULL);
+
+ gimp_warp_tool_update_stroke (wt, NULL);
+ }
+ }
+ else if (! strcmp (pspec->name, "high-quality-preview"))
+ {
+ gimp_warp_tool_set_sampler (wt, /* commit = */ FALSE);
+ }
+}
+
+static void
+gimp_warp_tool_draw (GimpDrawTool *draw_tool)
+{
+ GimpWarpTool *wt = GIMP_WARP_TOOL (draw_tool);
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
+ gdouble x, y;
+
+ if (wt->snap_brush)
+ {
+ x = wt->last_pos.x;
+ y = wt->last_pos.y;
+ }
+ else
+ {
+ x = wt->cursor_pos.x;
+ y = wt->cursor_pos.y;
+ }
+
+ if (wt->draw_brush)
+ {
+ gimp_draw_tool_add_arc (draw_tool,
+ FALSE,
+ x - options->effect_size * 0.5,
+ y - options->effect_size * 0.5,
+ options->effect_size,
+ options->effect_size,
+ 0.0, 2.0 * G_PI);
+ }
+ else if (! wt->show_cursor)
+ {
+ /* don't leave the user without any indication and draw
+ * a fallback crosshair
+ */
+ gimp_draw_tool_add_handle (draw_tool,
+ GIMP_HANDLE_CROSSHAIR,
+ x, y,
+ GIMP_TOOL_HANDLE_SIZE_CROSSHAIR,
+ GIMP_TOOL_HANDLE_SIZE_CROSSHAIR,
+ GIMP_HANDLE_ANCHOR_CENTER);
+ }
+}
+
+static void
+gimp_warp_tool_cursor_notify (GimpDisplayConfig *config,
+ GParamSpec *pspec,
+ GimpWarpTool *wt)
+{
+ gimp_draw_tool_pause (GIMP_DRAW_TOOL (wt));
+
+ wt->show_cursor = config->show_paint_tool_cursor;
+ wt->draw_brush = config->show_brush_outline;
+ wt->snap_brush = config->snap_brush_outline;
+
+ gimp_draw_tool_resume (GIMP_DRAW_TOOL (wt));
+}
+
+static gboolean
+gimp_warp_tool_can_stroke (GimpWarpTool *wt,
+ GimpDisplay *display,
+ gboolean show_message)
+{
+ GimpTool *tool = GIMP_TOOL (wt);
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
+ GimpGuiConfig *config = GIMP_GUI_CONFIG (display->gimp->config);
+ GimpImage *image = gimp_display_get_image (display);
+ GimpDrawable *drawable = gimp_image_get_active_drawable (image);
+
+ if (gimp_viewable_get_children (GIMP_VIEWABLE (drawable)))
+ {
+ if (show_message)
+ {
+ gimp_tool_message_literal (tool, display,
+ _("Cannot warp layer groups."));
+ }
+
+ return FALSE;
+ }
+
+ if (gimp_item_is_content_locked (GIMP_ITEM (drawable)))
+ {
+ if (show_message)
+ {
+ gimp_tool_message_literal (tool, display,
+ _("The active layer's pixels are locked."));
+
+ gimp_tools_blink_lock_box (display->gimp, GIMP_ITEM (drawable));
+ }
+
+ return FALSE;
+ }
+
+ if (! gimp_item_is_visible (GIMP_ITEM (drawable)) &&
+ ! config->edit_non_visible)
+ {
+ if (show_message)
+ {
+ gimp_tool_message_literal (tool, display,
+ _("The active layer is not visible."));
+ }
+
+ return FALSE;
+ }
+
+ if (! options->stroke_during_motion &&
+ ! options->stroke_periodically)
+ {
+ if (show_message)
+ {
+ gimp_tool_message_literal (tool, display,
+ _("No stroke events selected."));
+
+ gimp_widget_blink (options->stroke_frame);
+ }
+
+ return FALSE;
+ }
+
+ if (! wt->filter || ! gimp_tool_can_undo (tool, display))
+ {
+ const gchar *message = NULL;
+
+ switch (options->behavior)
+ {
+ case GIMP_WARP_BEHAVIOR_MOVE:
+ case GIMP_WARP_BEHAVIOR_GROW:
+ case GIMP_WARP_BEHAVIOR_SHRINK:
+ case GIMP_WARP_BEHAVIOR_SWIRL_CW:
+ case GIMP_WARP_BEHAVIOR_SWIRL_CCW:
+ break;
+
+ case GIMP_WARP_BEHAVIOR_ERASE:
+ message = _("No warp to erase.");
+ break;
+
+ case GIMP_WARP_BEHAVIOR_SMOOTH:
+ message = _("No warp to smooth.");
+ break;
+ }
+
+ if (message)
+ {
+ if (show_message)
+ {
+ gimp_tool_message_literal (tool, display, message);
+
+ gimp_widget_blink (options->behavior_combo);
+ }
+
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+static gboolean
+gimp_warp_tool_start (GimpWarpTool *wt,
+ GimpDisplay *display)
+{
+ GimpTool *tool = GIMP_TOOL (wt);
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
+ GimpImage *image = gimp_display_get_image (display);
+ GimpDrawable *drawable = gimp_image_get_active_drawable (image);
+ const Babl *format;
+ GeglRectangle bbox;
+
+ if (! gimp_warp_tool_can_stroke (wt, display, TRUE))
+ return FALSE;
+
+ tool->display = display;
+ tool->drawable = drawable;
+
+ /* Create the coords buffer, with the size of the selection */
+ format = babl_format_n (babl_type ("float"), 2);
+
+ gimp_item_mask_intersect (GIMP_ITEM (drawable), &bbox.x, &bbox.y,
+ &bbox.width, &bbox.height);
+
+#ifdef WARP_DEBUG
+ g_printerr ("Initialize coordinate buffer (%d,%d) at %d,%d\n",
+ bbox.width, bbox.height, bbox.x, bbox.y);
+#endif
+
+ wt->coords_buffer = gegl_buffer_new (&bbox, format);
+
+ gimp_warp_tool_create_filter (wt, drawable);
+
+ if (! gimp_draw_tool_is_active (GIMP_DRAW_TOOL (wt)))
+ gimp_draw_tool_start (GIMP_DRAW_TOOL (wt), display);
+
+ if (options->animate_button)
+ {
+ g_signal_connect_swapped (options->animate_button, "clicked",
+ G_CALLBACK (gimp_warp_tool_animate),
+ wt);
+
+ gtk_widget_set_sensitive (options->animate_button, TRUE);
+ }
+
+ return TRUE;
+}
+
+static void
+gimp_warp_tool_halt (GimpWarpTool *wt)
+{
+ GimpTool *tool = GIMP_TOOL (wt);
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
+
+ g_clear_object (&wt->coords_buffer);
+
+ g_clear_object (&wt->graph);
+ wt->render_node = NULL;
+
+ if (wt->filter)
+ {
+ gimp_drawable_filter_abort (wt->filter);
+ g_clear_object (&wt->filter);
+
+ gimp_image_flush (gimp_display_get_image (tool->display));
+ }
+
+ if (wt->redo_stack)
+ {
+ g_list_free (wt->redo_stack);
+ wt->redo_stack = NULL;
+ }
+
+ tool->display = NULL;
+ tool->drawable = NULL;
+
+ if (gimp_draw_tool_is_active (GIMP_DRAW_TOOL (wt)))
+ gimp_draw_tool_stop (GIMP_DRAW_TOOL (wt));
+
+ if (options->animate_button)
+ {
+ gtk_widget_set_sensitive (options->animate_button, FALSE);
+
+ g_signal_handlers_disconnect_by_func (options->animate_button,
+ gimp_warp_tool_animate,
+ wt);
+ }
+}
+
+static void
+gimp_warp_tool_commit (GimpWarpTool *wt)
+{
+ GimpTool *tool = GIMP_TOOL (wt);
+
+ /* don't commit a nop */
+ if (tool->display && gimp_tool_can_undo (tool, tool->display))
+ {
+ gimp_tool_control_push_preserve (tool->control, TRUE);
+
+ gimp_warp_tool_set_sampler (wt, /* commit = */ TRUE);
+
+ gimp_drawable_filter_commit (wt->filter, GIMP_PROGRESS (tool), FALSE);
+ g_clear_object (&wt->filter);
+
+ gimp_tool_control_pop_preserve (tool->control);
+
+ gimp_image_flush (gimp_display_get_image (tool->display));
+ }
+}
+
+static void
+gimp_warp_tool_start_stroke_timer (GimpWarpTool *wt)
+{
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
+
+ gimp_warp_tool_stop_stroke_timer (wt);
+
+ if (options->stroke_periodically &&
+ options->stroke_periodically_rate > 0.0 &&
+ ! (options->behavior == GIMP_WARP_BEHAVIOR_MOVE &&
+ options->stroke_during_motion))
+ {
+ gdouble fps;
+
+ fps = STROKE_TIMER_MAX_FPS * options->stroke_periodically_rate / 100.0;
+
+ wt->stroke_timer = g_timeout_add (1000.0 / fps,
+ (GSourceFunc) gimp_warp_tool_stroke_timer,
+ wt);
+ }
+}
+
+static void
+gimp_warp_tool_stop_stroke_timer (GimpWarpTool *wt)
+{
+ if (wt->stroke_timer)
+ g_source_remove (wt->stroke_timer);
+
+ wt->stroke_timer = 0;
+}
+
+static gboolean
+gimp_warp_tool_stroke_timer (GimpWarpTool *wt)
+{
+ GimpTool *tool = GIMP_TOOL (wt);
+ gint off_x, off_y;
+
+ gimp_item_get_offset (GIMP_ITEM (tool->drawable), &off_x, &off_y);
+
+ gimp_warp_tool_stroke_append (wt,
+ 'L', wt->last_pos.x - off_x,
+ wt->last_pos.y - off_y);
+
+ return TRUE;
+}
+
+static void
+gimp_warp_tool_create_graph (GimpWarpTool *wt)
+{
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
+ GeglNode *graph; /* Wrapper to be returned */
+ GeglNode *input, *output; /* Proxy nodes */
+ GeglNode *coords, *render; /* Render nodes */
+
+ /* render_node is not supposed to be recreated */
+ g_return_if_fail (wt->graph == NULL);
+
+ graph = gegl_node_new ();
+
+ input = gegl_node_get_input_proxy (graph, "input");
+ output = gegl_node_get_output_proxy (graph, "output");
+
+ coords = gegl_node_new_child (graph,
+ "operation", "gegl:buffer-source",
+ "buffer", wt->coords_buffer,
+ NULL);
+
+ render = gegl_node_new_child (graph,
+ "operation", "gegl:map-relative",
+ "abyss-policy", options->abyss_policy,
+ NULL);
+
+ gegl_node_connect_to (input, "output",
+ render, "input");
+
+ gegl_node_connect_to (coords, "output",
+ render, "aux");
+
+ gegl_node_connect_to (render, "output",
+ output, "input");
+
+ wt->graph = graph;
+ wt->render_node = render;
+}
+
+static void
+gimp_warp_tool_create_filter (GimpWarpTool *wt,
+ GimpDrawable *drawable)
+{
+ if (! wt->graph)
+ gimp_warp_tool_create_graph (wt);
+
+ gimp_warp_tool_set_sampler (wt, /* commit = */ FALSE);
+
+ wt->filter = gimp_drawable_filter_new (drawable,
+ _("Warp transform"),
+ wt->graph,
+ GIMP_ICON_TOOL_WARP);
+
+ gimp_drawable_filter_set_region (wt->filter, GIMP_FILTER_REGION_DRAWABLE);
+
+#if 0
+ g_object_set (wt->filter, "gegl-caching", TRUE, NULL);
+#endif
+
+ g_signal_connect (wt->filter, "flush",
+ G_CALLBACK (gimp_warp_tool_filter_flush),
+ wt);
+}
+
+static void
+gimp_warp_tool_set_sampler (GimpWarpTool *wt,
+ gboolean commit)
+{
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
+ GeglSamplerType sampler;
+ GeglSamplerType old_sampler;
+
+ if (! wt->render_node)
+ return;
+
+ if (commit || options->high_quality_preview)
+ sampler = (GeglSamplerType) options->interpolation;
+ else
+ sampler = PREVIEW_SAMPLER;
+
+ gegl_node_get (wt->render_node,
+ "sampler-type", &old_sampler,
+ NULL);
+
+ if (sampler != old_sampler)
+ {
+ gegl_node_set (wt->render_node,
+ "sampler-type", sampler,
+ NULL);
+
+ gimp_warp_tool_update_bounds (wt);
+ gimp_warp_tool_update_stroke (wt, NULL);
+ }
+}
+
+static GeglRectangle
+gimp_warp_tool_get_stroke_bounds (GeglNode *node)
+{
+ GeglRectangle bbox = {0, 0, 0, 0};
+ GeglPath *stroke;
+ gdouble size;
+
+ gegl_node_get (node,
+ "stroke", &stroke,
+ "size", &size,
+ NULL);
+
+ if (stroke)
+ {
+ gdouble min_x;
+ gdouble max_x;
+ gdouble min_y;
+ gdouble max_y;
+
+ gegl_path_get_bounds (stroke, &min_x, &max_x, &min_y, &max_y);
+ g_object_unref (stroke);
+
+ bbox.x = floor (min_x - size * 0.5);
+ bbox.y = floor (min_y - size * 0.5);
+ bbox.width = ceil (max_x + size * 0.5) - bbox.x;
+ bbox.height = ceil (max_y + size * 0.5) - bbox.y;
+ }
+
+ return bbox;
+}
+
+static GeglRectangle
+gimp_warp_tool_get_node_bounds (GeglNode *node)
+{
+ GeglRectangle *bounds;
+
+ if (! node || strcmp (gegl_node_get_operation (node), "gegl:warp"))
+ return *GEGL_RECTANGLE (0, 0, 0, 0);
+
+ bounds = g_object_get_data (G_OBJECT (node), "gimp-warp-tool-bounds");
+
+ if (! bounds)
+ {
+ GeglNode *input_node;
+ GeglRectangle input_bounds;
+ GeglRectangle stroke_bounds;
+
+ input_node = gegl_node_get_producer (node, "input", NULL);
+ input_bounds = gimp_warp_tool_get_node_bounds (input_node);
+
+ stroke_bounds = gimp_warp_tool_get_stroke_bounds (node);
+
+ gegl_rectangle_bounding_box (&input_bounds,
+ &input_bounds, &stroke_bounds);
+
+ bounds = gegl_rectangle_dup (&input_bounds);
+
+ g_object_set_data_full (G_OBJECT (node), "gimp-warp-tool-bounds",
+ bounds, g_free);
+ }
+
+ return *bounds;
+}
+
+static void
+gimp_warp_tool_clear_node_bounds (GeglNode *node)
+{
+ if (node && ! strcmp (gegl_node_get_operation (node), "gegl:warp"))
+ g_object_set_data (G_OBJECT (node), "gimp-warp-tool-bounds", NULL);
+}
+
+static GeglRectangle
+gimp_warp_tool_get_invalidated_by_change (GimpWarpTool *wt,
+ const GeglRectangle *area)
+{
+ GeglRectangle result = *area;
+
+ if (! wt->filter)
+ return result;
+
+ if (wt->render_node)
+ {
+ GeglOperation *operation = gegl_node_get_gegl_operation (wt->render_node);
+
+ result = gegl_operation_get_invalidated_by_change (operation,
+ "aux", area);
+ }
+
+ return result;
+}
+
+static void
+gimp_warp_tool_update_bounds (GimpWarpTool *wt)
+{
+ GeglRectangle bounds = {0, 0, 0, 0};
+
+ if (! wt->filter)
+ return;
+
+ if (wt->render_node)
+ {
+ GeglNode *node = gegl_node_get_producer (wt->render_node, "aux", NULL);
+
+ bounds = gimp_warp_tool_get_node_bounds (node);
+
+ bounds = gimp_warp_tool_get_invalidated_by_change (wt, &bounds);
+ }
+
+ gimp_drawable_filter_set_crop (wt->filter, &bounds, FALSE);
+}
+
+static void
+gimp_warp_tool_update_area (GimpWarpTool *wt,
+ const GeglRectangle *area,
+ gboolean synchronous)
+{
+ GeglRectangle rect;
+
+ if (! wt->filter)
+ return;
+
+ rect = gimp_warp_tool_get_invalidated_by_change (wt, area);
+
+ if (synchronous)
+ {
+ GimpTool *tool = GIMP_TOOL (wt);
+ GimpImage *image = gimp_display_get_image (tool->display);
+
+ g_signal_handlers_block_by_func (wt->filter,
+ gimp_warp_tool_filter_flush,
+ wt);
+
+ gimp_drawable_filter_apply (wt->filter, &rect);
+
+ gimp_projection_flush_now (gimp_image_get_projection (image), TRUE);
+ gimp_display_flush_now (tool->display);
+
+ g_signal_handlers_unblock_by_func (wt->filter,
+ gimp_warp_tool_filter_flush,
+ wt);
+ }
+ else
+ {
+ gimp_drawable_filter_apply (wt->filter, &rect);
+ }
+}
+
+static void
+gimp_warp_tool_update_stroke (GimpWarpTool *wt,
+ GeglNode *node)
+{
+ GeglRectangle bounds = {0, 0, 0, 0};
+
+ if (! wt->filter)
+ return;
+
+ if (node)
+ {
+ /* update just this stroke */
+ bounds = gimp_warp_tool_get_stroke_bounds (node);
+ }
+ else if (wt->render_node)
+ {
+ node = gegl_node_get_producer (wt->render_node, "aux", NULL);
+
+ bounds = gimp_warp_tool_get_node_bounds (node);
+ }
+
+ if (! gegl_rectangle_is_empty (&bounds))
+ {
+#ifdef WARP_DEBUG
+ g_printerr ("update stroke: (%d,%d), %dx%d\n",
+ bounds.x, bounds.y,
+ bounds.width, bounds.height);
+#endif
+
+ gimp_warp_tool_update_area (wt, &bounds, FALSE);
+ }
+}
+
+static void
+gimp_warp_tool_stroke_append (GimpWarpTool *wt,
+ gchar type,
+ gdouble x,
+ gdouble y)
+{
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
+ GeglRectangle area;
+
+ if (! wt->filter)
+ return;
+
+ gegl_path_append (wt->current_stroke, type, x, y);
+
+ area.x = floor (x - options->effect_size * 0.5);
+ area.y = floor (y - options->effect_size * 0.5);
+ area.width = ceil (x + options->effect_size * 0.5) - area.x;
+ area.height = ceil (y + options->effect_size * 0.5) - area.y;
+
+#ifdef WARP_DEBUG
+ g_printerr ("update rect: (%d,%d), %dx%d\n",
+ area.x, area.y,
+ area.width, area.height);
+#endif
+
+ if (wt->render_node)
+ {
+ GeglNode *node = gegl_node_get_producer (wt->render_node, "aux", NULL);
+
+ gimp_warp_tool_clear_node_bounds (node);
+
+ gimp_warp_tool_update_bounds (wt);
+ }
+
+ gimp_warp_tool_update_area (wt, &area, options->real_time_preview);
+}
+
+static void
+gimp_warp_tool_filter_flush (GimpDrawableFilter *filter,
+ GimpTool *tool)
+{
+ GimpImage *image = gimp_display_get_image (tool->display);
+
+ gimp_projection_flush (gimp_image_get_projection (image));
+}
+
+static void
+gimp_warp_tool_add_op (GimpWarpTool *wt,
+ GeglNode *op)
+{
+ GeglNode *last_op;
+
+ g_return_if_fail (GEGL_IS_NODE (wt->render_node));
+
+ gegl_node_add_child (wt->graph, op);
+
+ last_op = gegl_node_get_producer (wt->render_node, "aux", NULL);
+
+ gegl_node_disconnect (wt->render_node, "aux");
+ gegl_node_connect_to (last_op, "output",
+ op , "input");
+ gegl_node_connect_to (op, "output",
+ wt->render_node, "aux");
+}
+
+static void
+gimp_warp_tool_remove_op (GimpWarpTool *wt,
+ GeglNode *op)
+{
+ GeglNode *previous;
+
+ g_return_if_fail (GEGL_IS_NODE (wt->render_node));
+
+ previous = gegl_node_get_producer (op, "input", NULL);
+
+ gegl_node_disconnect (op, "input");
+ gegl_node_connect_to (previous, "output",
+ wt->render_node, "aux");
+
+ gegl_node_remove_child (wt->graph, op);
+}
+
+static void
+gimp_warp_tool_free_op (GeglNode *op)
+{
+ GeglNode *parent;
+
+ parent = gegl_node_get_parent (op);
+
+ gimp_assert (parent != NULL);
+
+ gegl_node_remove_child (parent, op);
+}
+
+static void
+gimp_warp_tool_animate (GimpWarpTool *wt)
+{
+ GimpTool *tool = GIMP_TOOL (wt);
+ GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
+ GimpImage *orig_image;
+ GimpImage *image;
+ GimpLayer *layer;
+ GimpLayer *first_layer;
+ GeglNode *scale_node;
+ GimpProgress *progress;
+ GtkWidget *widget;
+ gint i;
+
+ if (! gimp_warp_tool_can_undo (tool, tool->display))
+ {
+ gimp_tool_message_literal (tool, tool->display,
+ _("Please add some warp strokes first."));
+ return;
+ }
+
+ /* get rid of the image map so we can use wt->graph */
+ if (wt->filter)
+ {
+ gimp_drawable_filter_abort (wt->filter);
+ g_clear_object (&wt->filter);
+ }
+
+ gimp_warp_tool_set_sampler (wt, /* commit = */ TRUE);
+
+ gimp_progress_start (GIMP_PROGRESS (tool), FALSE,
+ _("Rendering Frame %d"), 1);
+
+ orig_image = gimp_item_get_image (GIMP_ITEM (tool->drawable));
+
+ image = gimp_create_image (orig_image->gimp,
+ gimp_item_get_width (GIMP_ITEM (tool->drawable)),
+ gimp_item_get_height (GIMP_ITEM (tool->drawable)),
+ gimp_drawable_get_base_type (tool->drawable),
+ gimp_drawable_get_precision (tool->drawable),
+ TRUE);
+
+ /* the first frame is always the unwarped image */
+ layer = GIMP_LAYER (gimp_item_convert (GIMP_ITEM (tool->drawable), image,
+ GIMP_TYPE_LAYER));
+ gimp_object_take_name (GIMP_OBJECT (layer),
+ g_strdup_printf (_("Frame %d"), 1));
+
+ gimp_item_set_offset (GIMP_ITEM (layer), 0, 0);
+ gimp_item_set_visible (GIMP_ITEM (layer), TRUE, FALSE);
+ gimp_layer_set_mode (layer, gimp_image_get_default_new_layer_mode (image),
+ FALSE);
+ gimp_layer_set_opacity (layer, GIMP_OPACITY_OPAQUE, FALSE);
+ gimp_image_add_layer (image, layer, NULL, 0, FALSE);
+
+ first_layer = layer;
+
+ scale_node = gegl_node_new_child (NULL,
+ "operation", "gimp:scalar-multiply",
+ "n-components", 2,
+ NULL);
+ gimp_warp_tool_add_op (wt, scale_node);
+
+ progress = gimp_sub_progress_new (GIMP_PROGRESS (tool));
+
+ for (i = 1; i < options->n_animation_frames; i++)
+ {
+ gimp_progress_set_text (GIMP_PROGRESS (tool),
+ _("Rendering Frame %d"), i + 1);
+
+ gimp_sub_progress_set_step (GIMP_SUB_PROGRESS (progress),
+ i, options->n_animation_frames);
+
+ layer = GIMP_LAYER (gimp_item_duplicate (GIMP_ITEM (first_layer),
+ GIMP_TYPE_LAYER));
+ gimp_object_take_name (GIMP_OBJECT (layer),
+ g_strdup_printf (_("Frame %d"), i + 1));
+
+ gegl_node_set (scale_node,
+ "factor", (gdouble) i /
+ (gdouble) (options->n_animation_frames - 1),
+ NULL);
+
+ gimp_gegl_apply_operation (gimp_drawable_get_buffer (GIMP_DRAWABLE (first_layer)),
+ progress,
+ _("Frame"),
+ wt->graph,
+ gimp_drawable_get_buffer (GIMP_DRAWABLE (layer)),
+ NULL, FALSE);
+
+ gimp_image_add_layer (image, layer, NULL, 0, FALSE);
+ }
+
+ g_object_unref (progress);
+
+ gimp_warp_tool_remove_op (wt, scale_node);
+
+ gimp_progress_end (GIMP_PROGRESS (tool));
+
+ /* recreate the image map */
+ gimp_warp_tool_create_filter (wt, tool->drawable);
+ gimp_warp_tool_update_stroke (wt, NULL);
+
+ widget = GTK_WIDGET (gimp_display_get_shell (tool->display));
+ gimp_create_display (orig_image->gimp, image, GIMP_UNIT_PIXEL, 1.0,
+ G_OBJECT (gtk_widget_get_screen (widget)),
+ gimp_widget_get_monitor (widget));
+ g_object_unref (image);
+}