static void
gimp_warp_tool_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (tool);
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_PLUS;
if (tool->display)
{
/* FIXME have better cursors */
switch (options->behavior)
{
case GIMP_WARP_BEHAVIOR_MOVE:
case GEGL_WARP_BEHAVIOR_GROW:
case GEGL_WARP_BEHAVIOR_SHRINK:
case GEGL_WARP_BEHAVIOR_SWIRL_CW:
case GEGL_WARP_BEHAVIOR_SWIRL_CCW:
case GEGL_WARP_BEHAVIOR_ERASE:
case GEGL_WARP_BEHAVIOR_SMOOTH:
modifier = GIMP_CURSOR_MODIFIER_MOVE;
break;
}
}
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, 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_pop_status (tool, tool->display);
gimp_warp_tool_halt (wt);
}
if (! tool->display)
{
if (! gimp_warp_tool_start (wt, display))
return;
}
wt->current_stroke = gegl_path_new ();
new_op = gegl_node_new_child (NULL,
"operation", "gegl:warp",
"behavior", options->behavior,
"strength", options->effect_strength,
"size", options->effect_size,
"hardness", options->effect_hardness,
"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);
wt->stroke_timer = g_timeout_add (STROKE_PERIOD,
(GSourceFunc) gimp_warp_tool_stroke_timer,
wt);
gimp_tool_control_activate (tool->control);
}
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 void
gimp_warp_tool_halt (GimpWarpTool *wt)
{
GimpTool *tool = GIMP_TOOL (wt);
GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (wt);
if (wt->coords_buffer)
{
g_object_unref (wt->coords_buffer);
wt->coords_buffer = NULL;
}
if (wt->graph)
{
g_object_unref (wt->graph);
wt->graph = NULL;
wt->render_node = NULL;
}
if (wt->image_map)
{
gimp_image_map_abort (wt->image_map);
g_object_unref (wt->image_map);
wt->image_map = NULL;
gimp_image_flush (gimp_display_get_image (tool->display));
}
if (wt->redo_stack)
{
g_list_free_full (wt->redo_stack, (GDestroyNotify) g_object_unref);
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_cursor_update (GimpTool *tool,
const GimpCoords *coords,
GdkModifierType state,
GimpDisplay *display)
{
GimpWarpOptions *options = GIMP_WARP_TOOL_GET_OPTIONS (tool);
GimpCursorModifier modifier = GIMP_CURSOR_MODIFIER_PLUS;
if (display == tool->display)
{
/* FIXME have better cursors */
switch (options->behavior)
{
case GIMP_WARP_BEHAVIOR_MOVE:
case GEGL_WARP_BEHAVIOR_GROW:
case GEGL_WARP_BEHAVIOR_SHRINK:
case GEGL_WARP_BEHAVIOR_SWIRL_CW:
case GEGL_WARP_BEHAVIOR_SWIRL_CCW:
case GEGL_WARP_BEHAVIOR_ERASE:
case GEGL_WARP_BEHAVIOR_SMOOTH:
modifier = GIMP_CURSOR_MODIFIER_MOVE;
break;
}
}
else
{
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
if (gimp_viewable_get_children (GIMP_VIEWABLE (drawable)) ||
gimp_item_is_content_locked (GIMP_ITEM (drawable)) ||
! gimp_item_is_visible (GIMP_ITEM (drawable)))
{
modifier = GIMP_CURSOR_MODIFIER_BAD;
}
}
gimp_tool_control_set_cursor_modifier (tool->control, modifier);
GIMP_TOOL_CLASS (parent_class)->cursor_update (tool, coords, state, display);
}
static void
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;
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_image_map (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);
}
}
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 = *roi;
update_region.x -= options->effect_size * 0.5;
update_region.y -= options->effect_size * 0.5;
update_region.width += options->effect_size;
update_region.height += options->effect_size;
#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_image_map_apply (wt->image_map, &update_region);
}
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_get_undo_desc (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->image_map)
{
gimp_image_map_abort (wt->image_map);
g_object_unref (wt->image_map);
wt->image_map = NULL;
}
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_NORMAL_MODE, 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);
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_image_map (wt, tool->drawable);
gimp_image_map_apply (wt->image_map, 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);
}
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_viewable_get_children (GIMP_VIEWABLE (drawable)))
{
gimp_tool_message_literal (tool, display,
_("Cannot warp layer groups."));
return FALSE;
}
if (gimp_item_is_content_locked (GIMP_ITEM (drawable)))
{
gimp_tool_message_literal (tool, display,
_("The active layer's pixels are locked."));
return FALSE;
}
if (! gimp_item_is_visible (GIMP_ITEM (drawable)))
{
gimp_tool_message_literal (tool, display,
_("The active layer is not visible."));
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;
}