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Gimp/app/tools/gimpwarptool.c
Ell fd297f943b app: in the warp tool, blink behavior combo when the current behavior is invalid 
In the warp tool, when the warp is empty and the current behavior
has no effect as a result (i.e., when it's ERASE or SMOOTH), show
an error message in the status bar, and blink the behavior combo
widget in the tool options, to hint at the source of the error.

(cherry picked from commit 7958387d54)
2018-12-12 11:23:49 -05:00

1210 lines
38 KiB
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/* 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-utils.h"
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "libgimpmath/gimpmath.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "tools-types.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 "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_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 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 void gimp_warp_tool_update_stroke (GimpWarpTool *wt,
GeglNode *node);
static void gimp_warp_tool_stroke_changed (GeglPath *stroke,
const GeglRectangle *roi,
GimpWarpTool *wt);
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)
{
GimpToolClass *tool_class = GIMP_TOOL_CLASS (klass);
GimpDrawToolClass *draw_tool_class = GIMP_DRAW_TOOL_CLASS (klass);
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_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_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");
}
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 ();
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,
"spacing", options->stroke_spacing / 100.0,
"stroke", wt->current_stroke,
NULL);
gimp_warp_tool_add_op (wt, new_op);
g_object_unref (new_op);
g_signal_connect (wt->current_stroke, "changed",
G_CALLBACK (gimp_warp_tool_stroke_changed),
wt);
gimp_item_get_offset (GIMP_ITEM (tool->drawable), &off_x, &off_y);
gegl_path_append (wt->current_stroke,
'M', coords->x - off_x, coords->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);
g_signal_handlers_disconnect_by_func (wt->current_stroke,
gimp_warp_tool_stroke_changed,
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);
gimp_draw_tool_pause (GIMP_DRAW_TOOL (tool));
wt->cursor_x = coords->x;
wt->cursor_y = coords->y;
if (options->stroke_during_motion)
{
gint off_x, off_y;
gimp_item_get_offset (GIMP_ITEM (tool->drawable), &off_x, &off_y);
gegl_path_append (wt->current_stroke,
'L', wt->cursor_x - off_x, wt->cursor_y - off_y);
gimp_warp_tool_start_stroke_timer (wt);
}
gimp_draw_tool_resume (GIMP_DRAW_TOOL (tool));
}
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_x = coords->x;
wt->cursor_y = coords->y;
}
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
}
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_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_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"))
{
if (wt_options->high_quality_preview)
{
gimp_warp_tool_set_sampler (wt, /* commit = */ FALSE);
gimp_warp_tool_update_stroke (wt, NULL);
}
}
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);
gimp_warp_tool_update_stroke (wt, NULL);
}
}
static void
gimp_warp_tool_draw (GimpDrawTool *draw_tool)
{
GimpWarpTool *wt = GIMP_WARP_TOOL (draw_tool);
GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
gimp_draw_tool_add_arc (draw_tool,
FALSE,
wt->cursor_x - options->effect_size * 0.5,
wt->cursor_y - options->effect_size * 0.5,
options->effect_size,
options->effect_size,
0.0, 2.0 * G_PI);
}
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);
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)))
{
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);
gegl_path_append (wt->current_stroke,
'L', wt->cursor_x - off_x, wt->cursor_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);
}
}
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 void
gimp_warp_tool_update_stroke (GimpWarpTool *wt,
GeglNode *node)
{
GeglRectangle bbox = {0, 0, 0, 0};
if (! wt->filter)
return;
if (node)
{
/* update just this stroke */
bbox = gimp_warp_tool_get_stroke_bounds (node);
}
else if (wt->render_node)
{
/* update all strokes */
for (node = gegl_node_get_producer (wt->render_node, "aux", NULL);
! strcmp (gegl_node_get_operation (node), "gegl:warp");
node = gegl_node_get_producer (node, "input", NULL))
{
GeglRectangle node_bbox;
node_bbox = gimp_warp_tool_get_stroke_bounds (node);
gegl_rectangle_bounding_box (&bbox, &bbox, &node_bbox);
}
}
if (! gegl_rectangle_is_empty (&bbox))
{
#ifdef WARP_DEBUG
g_printerr ("update stroke: (%d,%d), %dx%d\n",
bbox.x, bbox.y,
bbox.width, bbox.height);
#endif
gimp_drawable_filter_apply (wt->filter, &bbox);
}
}
static void
gimp_warp_tool_stroke_changed (GeglPath *path,
const GeglRectangle *roi,
GimpWarpTool *wt)
{
GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
GeglRectangle update_region;
update_region.x = floor (roi->x - options->effect_size * 0.5);
update_region.y = floor (roi->y - options->effect_size * 0.5);
update_region.width = ceil (roi->x + roi->width +
options->effect_size * 0.5) - update_region.x;
update_region.height = ceil (roi->y + roi->height +
options->effect_size * 0.5) - update_region.y;
#ifdef WARP_DEBUG
g_printerr ("update rect: (%d,%d), %dx%d\n",
update_region.x, update_region.y,
update_region.width, update_region.height);
#endif
gimp_drawable_filter_apply (wt->filter, &update_region);
}
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);
}
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