static void
gimp_image_map_tool_map (GimpImageMapTool *tool)
{
GimpDisplayShell *shell = GIMP_DISPLAY_SHELL (GIMP_TOOL (tool)->display->shell);
GimpItem *item = GIMP_ITEM (tool->drawable);
gint x, y;
gint w, h;
gint off_x, off_y;
GeglRectangle visible;
GIMP_IMAGE_MAP_TOOL_GET_CLASS (tool)->map (tool);
gimp_display_shell_untransform_viewport (shell, &x, &y, &w, &h);
gimp_item_offsets (item, &off_x, &off_y);
gimp_rectangle_intersect (x, y, w, h,
off_x,
off_y,
gimp_item_width (item),
gimp_item_height (item),
&visible.x,
&visible.y,
&visible.width,
&visible.height);
visible.x -= off_x;
visible.y -= off_y;
gimp_image_map_apply (tool->image_map, &visible);
}
static void
gimp_cage_tool_image_map_update (GimpCageTool *ct)
{
GimpTool *tool = GIMP_TOOL (ct);
GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
GimpItem *item = GIMP_ITEM (tool->drawable);
gint x, y;
gint w, h;
gint off_x, off_y;
GeglRectangle visible;
gimp_display_shell_untransform_viewport (shell, &x, &y, &w, &h);
gimp_item_get_offset (item, &off_x, &off_y);
gimp_rectangle_intersect (x, y, w, h,
off_x,
off_y,
gimp_item_get_width (item),
gimp_item_get_height (item),
&visible.x,
&visible.y,
&visible.width,
&visible.height);
visible.x -= off_x;
visible.y -= off_y;
gimp_image_map_apply (ct->image_map, &visible);
}
void
gimp_channel_combine_buffer (GimpChannel *mask,
GeglBuffer *add_on_buffer,
GimpChannelOps op,
gint off_x,
gint off_y)
{
GeglBuffer *buffer;
gint x, y, w, h;
g_return_if_fail (GIMP_IS_CHANNEL (mask));
g_return_if_fail (GEGL_IS_BUFFER (add_on_buffer));
buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
if (! gimp_gegl_mask_combine_buffer (buffer, add_on_buffer,
op, off_x, off_y))
return;
gimp_rectangle_intersect (off_x, off_y,
gegl_buffer_get_width (add_on_buffer),
gegl_buffer_get_height (add_on_buffer),
0, 0,
gimp_item_get_width (GIMP_ITEM (mask)),
gimp_item_get_height (GIMP_ITEM (mask)),
&x, &y, &w, &h);
mask->bounds_known = FALSE;
gimp_drawable_update (GIMP_DRAWABLE (mask), x, y, w, h);
}
void
gimp_channel_combine_mask (GimpChannel *mask,
GimpChannel *add_on,
GimpChannelOps op,
gint off_x,
gint off_y)
{
PixelRegion srcPR, destPR;
gint x, y, w, h;
g_return_if_fail (GIMP_IS_CHANNEL (mask));
g_return_if_fail (GIMP_IS_CHANNEL (add_on));
if (! gimp_rectangle_intersect (off_x, off_y,
gimp_item_get_width (GIMP_ITEM (add_on)),
gimp_item_get_height (GIMP_ITEM (add_on)),
0, 0,
gimp_item_get_width (GIMP_ITEM (mask)),
gimp_item_get_height (GIMP_ITEM (mask)),
&x, &y, &w, &h))
return;
pixel_region_init (&srcPR, gimp_drawable_get_tiles (GIMP_DRAWABLE (add_on)),
x - off_x, y - off_y, w, h, FALSE);
pixel_region_init (&destPR, gimp_drawable_get_tiles (GIMP_DRAWABLE (mask)),
x, y, w, h, TRUE);
switch (op)
{
case GIMP_CHANNEL_OP_ADD:
case GIMP_CHANNEL_OP_REPLACE:
pixel_regions_process_parallel ((PixelProcessorFunc)
gimp_channel_combine_sub_region_add,
NULL, 2, &srcPR, &destPR);
break;
case GIMP_CHANNEL_OP_SUBTRACT:
pixel_regions_process_parallel ((PixelProcessorFunc)
gimp_channel_combine_sub_region_sub,
NULL, 2, &srcPR, &destPR);
break;
case GIMP_CHANNEL_OP_INTERSECT:
pixel_regions_process_parallel ((PixelProcessorFunc)
gimp_channel_combine_sub_region_intersect,
NULL, 2, &srcPR, &destPR);
break;
default:
g_warning ("%s: unknown operation type", G_STRFUNC);
break;
}
mask->bounds_known = FALSE;
gimp_drawable_update (GIMP_DRAWABLE (mask), x, y, w, h);
}
void
floating_sel_anchor (GimpLayer *layer)
{
GimpImage *image;
GimpDrawable *drawable;
GimpFilter *filter = NULL;
gint off_x, off_y;
gint dr_off_x, dr_off_y;
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (gimp_layer_is_floating_sel (layer));
/* Don't let gimp_image_remove_layer free the layer while we still need it */
g_object_ref (layer);
image = gimp_item_get_image (GIMP_ITEM (layer));
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_FS_ANCHOR,
C_("undo-type", "Anchor Floating Selection"));
drawable = gimp_layer_get_floating_sel_drawable (layer);
gimp_item_get_offset (GIMP_ITEM (layer), &off_x, &off_y);
gimp_item_get_offset (GIMP_ITEM (drawable), &dr_off_x, &dr_off_y);
if (gimp_item_get_visible (GIMP_ITEM (layer)) &&
gimp_rectangle_intersect (off_x, off_y,
gimp_item_get_width (GIMP_ITEM (layer)),
gimp_item_get_height (GIMP_ITEM (layer)),
dr_off_x, dr_off_y,
gimp_item_get_width (GIMP_ITEM (drawable)),
gimp_item_get_height (GIMP_ITEM (drawable)),
NULL, NULL, NULL, NULL))
{
filter = gimp_drawable_get_floating_sel_filter (drawable);
g_object_ref (filter);
}
/* first remove the filter, then merge it, or we will get warnings
* about already connected nodes
*/
gimp_image_remove_layer (image, layer, TRUE, NULL);
if (filter)
{
gimp_drawable_merge_filter (drawable, filter, NULL, NULL);
g_object_unref (filter);
}
gimp_image_undo_group_end (image);
/* invalidate the boundaries */
gimp_drawable_invalidate_boundary (GIMP_DRAWABLE (gimp_image_get_mask (image)));
g_object_unref (layer);
}
/* --------------------------------------------
* gap_drawable_foreground_extract_matting_init
* --------------------------------------------
*
*/
static GappMattingState *
gap_drawable_foreground_extract_matting_init (GimpDrawable *drawable,
gint mask_x,
gint mask_y,
gint mask_width,
gint mask_height)
{
GappMattingState *state;
GappTileManager *tm;
const guchar *colormap = NULL;
gboolean intersect;
gint offset_x;
gint offset_y;
gint is_x, is_y, is_width, is_height;
if(gap_debug)
{
printf("init: START\n");
}
/* get offsets within the image */
gimp_drawable_offsets (drawable->drawable_id, &offset_x, &offset_y);
intersect = gimp_rectangle_intersect (offset_x, offset_y,
drawable->width,
drawable->height,
mask_x, mask_y, mask_width, mask_height,
&is_x, &is_y, &is_width, &is_height);
/* FIXME:
* Clear the mask outside the rectangle that we are working on?
*/
if (! intersect)
{
return NULL;
}
tm = gapp_tile_manager_new(drawable);
state = matting_init (tm, colormap,
offset_x, offset_y,
is_x, is_y, is_width, is_height);
if(gap_debug)
{
printf("init: END state:%d\n"
,(int) state
);
}
return (state);
} /* end gap_drawable_foreground_extract_matting_init */
void
gimp_channel_combine_rect (GimpChannel *mask,
GimpChannelOps op,
gint x,
gint y,
gint w,
gint h)
{
GeglBuffer *buffer;
g_return_if_fail (GIMP_IS_CHANNEL (mask));
buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
if (! gimp_gegl_mask_combine_rect (buffer, op, x, y, w, h))
return;
gimp_rectangle_intersect (x, y, w, h,
0, 0,
gimp_item_get_width (GIMP_ITEM (mask)),
gimp_item_get_height (GIMP_ITEM (mask)),
&x, &y, &w, &h);
/* Determine new boundary */
if (mask->bounds_known && (op == GIMP_CHANNEL_OP_ADD) && ! mask->empty)
{
if (x < mask->x1)
mask->x1 = x;
if (y < mask->y1)
mask->y1 = y;
if ((x + w) > mask->x2)
mask->x2 = (x + w);
if ((y + h) > mask->y2)
mask->y2 = (y + h);
}
else if (op == GIMP_CHANNEL_OP_REPLACE || mask->empty)
{
mask->empty = FALSE;
mask->x1 = x;
mask->y1 = y;
mask->x2 = x + w;
mask->y2 = y + h;
}
else
{
mask->bounds_known = FALSE;
}
mask->x1 = CLAMP (mask->x1, 0, gimp_item_get_width (GIMP_ITEM (mask)));
mask->y1 = CLAMP (mask->y1, 0, gimp_item_get_height (GIMP_ITEM (mask)));
mask->x2 = CLAMP (mask->x2, 0, gimp_item_get_width (GIMP_ITEM (mask)));
mask->y2 = CLAMP (mask->y2, 0, gimp_item_get_height (GIMP_ITEM (mask)));
gimp_drawable_update (GIMP_DRAWABLE (mask), x, y, w, h);
}
void
gimp_paint_core_cancel (GimpPaintCore *core,
GimpDrawable *drawable)
{
gint x, y;
gint width, height;
g_return_if_fail (GIMP_IS_PAINT_CORE (core));
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
/* Determine if any part of the image has been altered--
* if nothing has, then just return...
*/
if ((core->x2 == core->x1) || (core->y2 == core->y1))
return;
if (gimp_rectangle_intersect (core->x1, core->y1,
core->x2 - core->x1,
core->y2 - core->y1,
0, 0,
gimp_item_get_width (GIMP_ITEM (drawable)),
gimp_item_get_height (GIMP_ITEM (drawable)),
&x, &y, &width, &height))
{
gegl_buffer_copy (core->undo_buffer,
GEGL_RECTANGLE (x, y, width, height),
gimp_drawable_get_buffer (drawable),
GEGL_RECTANGLE (x, y, width, height));
}
g_object_unref (core->undo_buffer);
core->undo_buffer = NULL;
if (core->saved_proj_buffer)
{
g_object_unref (core->saved_proj_buffer);
core->saved_proj_buffer = NULL;
}
gimp_drawable_update (drawable, x, y, width, height);
gimp_viewable_preview_thaw (GIMP_VIEWABLE (drawable));
}
SioxState *
gimp_drawable_foreground_extract_siox_init (GimpDrawable *drawable,
gint x,
gint y,
gint width,
gint height)
{
GeglBuffer *buffer;
const guchar *colormap = NULL;
gboolean intersect;
gint offset_x;
gint offset_y;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
if (gimp_drawable_is_indexed (drawable))
colormap = gimp_drawable_get_colormap (drawable);
gimp_item_get_offset (GIMP_ITEM (drawable), &offset_x, &offset_y);
intersect = gimp_rectangle_intersect (offset_x, offset_y,
gimp_item_get_width (GIMP_ITEM (drawable)),
gimp_item_get_height (GIMP_ITEM (drawable)),
x, y, width, height,
&x, &y, &width, &height);
/* FIXME:
* Clear the mask outside the rectangle that we are working on?
*/
if (! intersect)
return NULL;
buffer = gimp_drawable_get_buffer (drawable);
return siox_init (gimp_gegl_buffer_get_tiles (buffer), colormap,
offset_x, offset_y,
x, y, width, height);
}
static void
gimp_seamless_clone_tool_filter_update (GimpSeamlessCloneTool *sc)
{
GimpTool *tool = GIMP_TOOL (sc);
GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
GimpItem *item = GIMP_ITEM (tool->drawable);
gint x, y;
gint w, h;
gint off_x, off_y;
GeglRectangle visible;
GeglOperation *op = NULL;
GimpProgress *progress;
GeglNode *output;
GeglProcessor *processor;
gdouble value;
progress = gimp_progress_start (GIMP_PROGRESS (sc), FALSE,
_("Cloning the foreground object"));
/* Find out at which x,y is the top left corner of the currently
* displayed part */
gimp_display_shell_untransform_viewport (shell, &x, &y, &w, &h);
/* Find out where is our drawable positioned */
gimp_item_get_offset (item, &off_x, &off_y);
/* Create a rectangle from the intersection of the currently displayed
* part with the drawable */
gimp_rectangle_intersect (x, y, w, h,
off_x,
off_y,
gimp_item_get_width (item),
gimp_item_get_height (item),
&visible.x,
&visible.y,
&visible.width,
&visible.height);
/* Since the filter_apply function receives a rectangle describing
* where it should update the preview, and since that rectangle should
* be relative to the drawable's location, we now offset back by the
* drawable's offsetts. */
visible.x -= off_x;
visible.y -= off_y;
g_object_get (sc->sc_node, "gegl-operation", &op, NULL);
/* If any cache of the visible area was present, clear it!
* We need to clear the cache in the sc_node, since that is
* where the previous paste was located
*/
gegl_operation_invalidate (op, &visible, TRUE);
g_object_unref (op);
/* Now update the image map and show this area */
gimp_drawable_filter_apply (sc->filter, NULL);
/* Show update progress. */
output = gegl_node_get_output_proxy (sc->render_node, "output");
processor = gegl_node_new_processor (output, NULL);
while (gegl_processor_work (processor, &value))
{
if (progress)
gimp_progress_set_value (progress, value);
}
if (progress)
gimp_progress_end (progress);
g_object_unref (processor);
}
GeglBuffer *
gimp_drawable_transform_buffer_flip (GimpDrawable *drawable,
GimpContext *context,
GeglBuffer *orig_buffer,
gint orig_offset_x,
gint orig_offset_y,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result,
gint *new_offset_x,
gint *new_offset_y)
{
GeglBuffer *new_buffer;
GeglRectangle src_rect;
GeglRectangle dest_rect;
gint orig_x, orig_y;
gint orig_width, orig_height;
gint new_x, new_y;
gint new_width, new_height;
gint i;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (GEGL_IS_BUFFER (orig_buffer), NULL);
orig_x = orig_offset_x;
orig_y = orig_offset_y;
orig_width = gegl_buffer_get_width (orig_buffer);
orig_height = gegl_buffer_get_height (orig_buffer);
new_x = orig_x;
new_y = orig_y;
new_width = orig_width;
new_height = orig_height;
switch (flip_type)
{
case GIMP_ORIENTATION_HORIZONTAL:
new_x = RINT (-((gdouble) orig_x +
(gdouble) orig_width - axis) + axis);
break;
case GIMP_ORIENTATION_VERTICAL:
new_y = RINT (-((gdouble) orig_y +
(gdouble) orig_height - axis) + axis);
break;
case GIMP_ORIENTATION_UNKNOWN:
g_return_val_if_reached (NULL);
break;
}
new_buffer = gimp_gegl_buffer_new (GEGL_RECTANGLE (0, 0,
new_width, new_height),
gegl_buffer_get_format (orig_buffer));
if (clip_result && (new_x != orig_x || new_y != orig_y))
{
GimpRGB bg;
GeglColor *color;
gint clip_x, clip_y;
gint clip_width, clip_height;
*new_offset_x = orig_x;
*new_offset_y = orig_y;
/* "Outside" a channel is transparency, not the bg color */
if (GIMP_IS_CHANNEL (drawable))
gimp_rgba_set (&bg, 0.0, 0.0, 0.0, 0.0);
else
gimp_context_get_background (context, &bg);
color = gimp_gegl_color_new (&bg);
gegl_buffer_set_color (new_buffer, NULL, color);
g_object_unref (color);
if (gimp_rectangle_intersect (orig_x, orig_y, orig_width, orig_height,
new_x, new_y, new_width, new_height,
&clip_x, &clip_y,
&clip_width, &clip_height))
{
orig_x = new_x = clip_x - orig_x;
orig_y = new_y = clip_y - orig_y;
}
orig_width = new_width = clip_width;
orig_height = new_height = clip_height;
}
else
{
*new_offset_x = new_x;
*new_offset_y = new_y;
orig_x = 0;
orig_y = 0;
new_x = 0;
new_y = 0;
}
if (new_width == 0 && new_height == 0)
return new_buffer;
switch (flip_type)
{
case GIMP_ORIENTATION_HORIZONTAL:
src_rect.x = orig_x;
src_rect.y = orig_y;
src_rect.width = 1;
src_rect.height = orig_height;
dest_rect.x = new_x + new_width - 1;
dest_rect.y = new_y;
dest_rect.width = 1;
dest_rect.height = new_height;
for (i = 0; i < orig_width; i++)
{
src_rect.x = i + orig_x;
dest_rect.x = new_x + new_width - i - 1;
gegl_buffer_copy (orig_buffer, &src_rect,
new_buffer, &dest_rect);
}
break;
case GIMP_ORIENTATION_VERTICAL:
src_rect.x = orig_x;
src_rect.y = orig_y;
src_rect.width = orig_width;
src_rect.height = 1;
dest_rect.x = new_x;
dest_rect.y = new_y + new_height - 1;
dest_rect.width = new_width;
dest_rect.height = 1;
for (i = 0; i < orig_height; i++)
{
src_rect.y = i + orig_y;
dest_rect.y = new_y + new_height - i - 1;
gegl_buffer_copy (orig_buffer, &src_rect,
new_buffer, &dest_rect);
}
break;
case GIMP_ORIENTATION_UNKNOWN:
break;
}
return new_buffer;
}
/**
* gimp_drawable_get_line_art_fill_buffer:
* @drawable: the #GimpDrawable to edit.
* @line_art: the #GimpLineArt computed as fill source.
* @options: the #GimpFillOptions.
* @sample_merged:
* @seed_x: X coordinate to start the fill.
* @seed_y: Y coordinate to start the fill.
* @mask_buffer: mask of the fill in-progress when in an interactive
* filling process. Set to NULL if you need a one-time
* fill.
* @mask_x: returned x bound of @mask_buffer.
* @mask_y: returned x bound of @mask_buffer.
* @mask_width: returned width bound of @mask_buffer.
* @mask_height: returned height bound of @mask_buffer.
*
* Creates the fill buffer for a bucket fill operation on @drawable
* based on @line_art and @options, without actually applying it.
* If @mask_buffer is not NULL, the intermediate fill mask will also be
* returned. This fill mask can later be reused in successive calls to
* gimp_drawable_get_bucket_fill_buffer() for interactive filling.
*
* Returns: a fill buffer which can be directly applied to @drawable, or
* used in a drawable filter as preview.
*/
GeglBuffer *
gimp_drawable_get_line_art_fill_buffer (GimpDrawable *drawable,
GimpLineArt *line_art,
GimpFillOptions *options,
gboolean sample_merged,
gdouble seed_x,
gdouble seed_y,
GeglBuffer **mask_buffer,
gdouble *mask_x,
gdouble *mask_y,
gint *mask_width,
gint *mask_height)
{
GimpImage *image;
GeglBuffer *buffer;
GeglBuffer *new_mask;
gint x, y, width, height;
gint mask_offset_x = 0;
gint mask_offset_y = 0;
gint sel_x, sel_y, sel_width, sel_height;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
g_return_val_if_fail (GIMP_IS_FILL_OPTIONS (options), NULL);
image = gimp_item_get_image (GIMP_ITEM (drawable));
if (! gimp_item_mask_intersect (GIMP_ITEM (drawable),
&sel_x, &sel_y, &sel_width, &sel_height))
return NULL;
if (mask_buffer && *mask_buffer)
{
gfloat pixel;
gegl_buffer_sample (*mask_buffer, seed_x, seed_y, NULL, &pixel,
babl_format ("Y float"),
GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
if (pixel != 0.0)
/* Already selected. This seed won't change the selection. */
return NULL;
}
gimp_set_busy (image->gimp);
/* Do a seed bucket fill...To do this, calculate a new
* contiguous region.
*/
new_mask = gimp_pickable_contiguous_region_by_line_art (NULL, line_art,
(gint) seed_x,
(gint) seed_y);
if (mask_buffer && *mask_buffer)
{
gimp_gegl_mask_combine_buffer (new_mask, *mask_buffer,
GIMP_CHANNEL_OP_ADD, 0, 0);
g_object_unref (*mask_buffer);
}
if (mask_buffer)
*mask_buffer = new_mask;
gimp_gegl_mask_bounds (new_mask, &x, &y, &width, &height);
width -= x;
height -= y;
/* If there is a selection, intersect the region bounds
* with the selection bounds, to avoid processing areas
* that are going to be masked out anyway. The actual
* intersection of the fill region with the mask data
* happens when combining the fill buffer, in
* gimp_drawable_apply_buffer().
*/
if (! gimp_channel_is_empty (gimp_image_get_mask (image)))
{
gint off_x = 0;
gint off_y = 0;
if (sample_merged)
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
if (! gimp_rectangle_intersect (x, y, width, height,
sel_x + off_x, sel_y + off_y,
sel_width, sel_height,
&x, &y, &width, &height))
{
if (! mask_buffer)
g_object_unref (new_mask);
/* The fill region and the selection are disjoint; bail. */
gimp_unset_busy (image->gimp);
return NULL;
}
}
/* make sure we handle the mask correctly if it was sample-merged */
if (sample_merged)
{
GimpItem *item = GIMP_ITEM (drawable);
gint off_x, off_y;
/* Limit the channel bounds to the drawable's extents */
gimp_item_get_offset (item, &off_x, &off_y);
gimp_rectangle_intersect (x, y, width, height,
off_x, off_y,
gimp_item_get_width (item),
gimp_item_get_height (item),
&x, &y, &width, &height);
mask_offset_x = x;
mask_offset_y = y;
/* translate mask bounds to drawable coords */
x -= off_x;
y -= off_y;
}
else
{
mask_offset_x = x;
mask_offset_y = y;
}
buffer = gimp_fill_options_create_buffer (options, drawable,
GEGL_RECTANGLE (0, 0,
width, height),
-x, -y);
gimp_gegl_apply_opacity (buffer, NULL, NULL, buffer, new_mask,
-mask_offset_x, -mask_offset_y, 1.0);
if (gimp_fill_options_get_antialias (options))
{
/* Antialias for the line art algorithm is not applied during mask
* creation because it is not based on individual pixel colors.
* Instead we just want to apply it on the borders of the mask at
* the end (since the mask can evolve, we don't want to actually
* touch it, but only the intermediate results).
*/
GeglNode *graph;
GeglNode *input;
GeglNode *op;
graph = gegl_node_new ();
input = gegl_node_new_child (graph,
"operation", "gegl:buffer-source",
"buffer", buffer,
NULL);
op = gegl_node_new_child (graph,
"operation", "gegl:gaussian-blur",
"std-dev-x", 0.5,
"std-dev-y", 0.5,
NULL);
gegl_node_connect_to (input, "output", op, "input");
gegl_node_blit_buffer (op, buffer, NULL, 0,
GEGL_ABYSS_NONE);
g_object_unref (graph);
}
if (mask_x)
*mask_x = x;
if (mask_y)
*mask_y = y;
if (mask_width)
*mask_width = width;
if (mask_height)
*mask_height = height;
if (! mask_buffer)
g_object_unref (new_mask);
gimp_unset_busy (image->gimp);
return buffer;
}
/**
* gimp_channel_combine_ellipse_rect:
* @mask: the channel with which to combine the elliptic rect
* @op: whether to replace, add to, or subtract from the current
* contents
* @x: x coordinate of upper left corner of bounding rect
* @y: y coordinate of upper left corner of bounding rect
* @w: width of bounding rect
* @h: height of bounding rect
* @a: elliptic a-constant applied to corners
* @b: elliptic b-constant applied to corners
* @antialias: if %TRUE, antialias the elliptic corners
*
* Used for rounded cornered rectangles and ellipses. If @op is
* %GIMP_CHANNEL_OP_REPLACE or %GIMP_CHANNEL_OP_ADD, sets pixels
* within the ellipse to 255. If @op is %GIMP_CHANNEL_OP_SUBTRACT,
* sets pixels within to zero. If @antialias is %TRUE, pixels that
* impinge on the edge of the ellipse are set to intermediate values,
* depending on how much they overlap.
**/
void
gimp_channel_combine_ellipse_rect (GimpChannel *mask,
GimpChannelOps op,
gint x,
gint y,
gint w,
gint h,
gdouble a,
gdouble b,
gboolean antialias)
{
PixelRegion maskPR;
gdouble a_sqr;
gdouble b_sqr;
gdouble ellipse_center_x;
gint x0, y0;
gint width, height;
gpointer pr;
g_return_if_fail (GIMP_IS_CHANNEL (mask));
g_return_if_fail (a >= 0.0 && b >= 0.0);
g_return_if_fail (op != GIMP_CHANNEL_OP_INTERSECT);
/* Make sure the elliptic corners fit into the rect */
a = MIN (a, w / 2.0);
b = MIN (b, h / 2.0);
a_sqr = SQR (a);
b_sqr = SQR (b);
if (! gimp_rectangle_intersect (x, y, w, h,
0, 0,
gimp_item_get_width (GIMP_ITEM (mask)),
gimp_item_get_height (GIMP_ITEM (mask)),
&x0, &y0, &width, &height))
return;
ellipse_center_x = x + a;
pixel_region_init (&maskPR, gimp_drawable_get_tiles (GIMP_DRAWABLE (mask)),
x0, y0, width, height, TRUE);
for (pr = pixel_regions_register (1, &maskPR);
pr != NULL;
pr = pixel_regions_process (pr))
{
guchar *data = maskPR.data;
gint py;
for (py = maskPR.y;
py < maskPR.y + maskPR.h;
py++, data += maskPR.rowstride)
{
const gint px = maskPR.x;
gdouble ellipse_center_y;
if (py >= y + b && py < y + h - b)
{
/* we are on a row without rounded corners */
gimp_channel_combine_span (data, op, 0, maskPR.w, 255);
continue;
}
/* Match the ellipse center y with our current y */
if (py < y + b)
{
ellipse_center_y = y + b;
}
else
{
ellipse_center_y = y + h - b;
}
/* For a non-antialiased ellipse, use the normal equation
* for an ellipse with an arbitrary center
* (ellipse_center_x, ellipse_center_y).
*/
if (! antialias)
{
gdouble half_ellipse_width_at_y;
gint x_start;
gint x_end;
half_ellipse_width_at_y =
sqrt (a_sqr -
a_sqr * SQR (py + 0.5f - ellipse_center_y) / b_sqr);
x_start = ROUND (ellipse_center_x - half_ellipse_width_at_y);
x_end = ROUND (ellipse_center_x + w - 2 * a +
half_ellipse_width_at_y);
gimp_channel_combine_span (data, op,
MAX (x_start - px, 0),
MIN (x_end - px, maskPR.w), 255);
}
else /* use antialiasing */
{
/* algorithm changed 7-18-04, because the previous one
* did not work well for eccentric ellipses. The new
* algorithm measures the distance to the ellipse in the
* X and Y directions, and uses trigonometry to
* approximate the distance to the ellipse as the
* distance to the hypotenuse of a right triangle whose
* legs are the X and Y distances. (WES)
*/
const gfloat yi = ABS (py + 0.5 - ellipse_center_y);
gint last_val = -1;
gint x_start = px;
gint cur_x;
for (cur_x = px; cur_x < (px + maskPR.w); cur_x++)
{
gfloat xj;
gfloat xdist;
gfloat ydist;
gfloat r;
gfloat dist;
gint val;
if (cur_x < x + w / 2)
{
ellipse_center_x = x + a;
}
else
{
ellipse_center_x = x + w - a;
}
xj = ABS (cur_x + 0.5 - ellipse_center_x);
if (yi < b)
xdist = xj - a * sqrt (1 - SQR (yi) / b_sqr);
else
xdist = 1000.0; /* anything large will work */
if (xj < a)
ydist = yi - b * sqrt (1 - SQR (xj) / a_sqr);
else
ydist = 1000.0; /* anything large will work */
r = hypot (xdist, ydist);
if (r < 0.001)
dist = 0.;
else
dist = xdist * ydist / r; /* trig formula for distance to
* hypotenuse
*/
if (xdist < 0.0)
dist *= -1;
if (dist < -0.5)
val = 255;
else if (dist < 0.5)
val = (gint) (255 * (1 - (dist + 0.5)));
else
val = 0;
if (last_val != val)
{
if (last_val != -1)
gimp_channel_combine_span (data, op,
MAX (x_start - px, 0),
MIN (cur_x - px, maskPR.w),
last_val);
x_start = cur_x;
last_val = val;
}
/* skip ahead if we are on the straight segment
* between rounded corners
*/
if (cur_x >= x + a && cur_x < x + w - a)
{
gimp_channel_combine_span (data, op,
MAX (x_start - px, 0),
MIN (cur_x - px, maskPR.w),
last_val);
x_start = cur_x;
cur_x = x + w - a;
last_val = val = 255;
}
/* Time to change center? */
if (cur_x >= x + w / 2)
{
ellipse_center_x = x + w - a;
}
}
gimp_channel_combine_span (data, op,
MAX (x_start - px, 0),
MIN (cur_x - px, maskPR.w),
last_val);
}
}
}
/* use the intersected values for the boundary calculation */
x = x0;
y = y0;
w = width;
h = height;
/* determine new boundary */
if (mask->bounds_known && (op == GIMP_CHANNEL_OP_ADD) && ! mask->empty)
{
if (x < mask->x1)
mask->x1 = x;
if (y < mask->y1)
mask->y1 = y;
if ((x + w) > mask->x2)
mask->x2 = (x + w);
if ((y + h) > mask->y2)
mask->y2 = (y + h);
}
else if (op == GIMP_CHANNEL_OP_REPLACE || mask->empty)
{
mask->empty = FALSE;
mask->x1 = x;
mask->y1 = y;
mask->x2 = x + w;
mask->y2 = y + h;
}
else
{
mask->bounds_known = FALSE;
}
gimp_drawable_update (GIMP_DRAWABLE (mask), x, y, w, h);
}
void
gimp_paint_core_finish (GimpPaintCore *core,
GimpDrawable *drawable,
gboolean push_undo)
{
GimpImage *image;
g_return_if_fail (GIMP_IS_PAINT_CORE (core));
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
if (core->applicator)
{
g_object_unref (core->applicator);
core->applicator = NULL;
}
if (core->stroke_buffer)
{
g_array_free (core->stroke_buffer, TRUE);
core->stroke_buffer = NULL;
}
if (core->mask_buffer)
{
g_object_unref (core->mask_buffer);
core->mask_buffer = NULL;
}
if (core->comp_buffer)
{
g_object_unref (core->comp_buffer);
core->comp_buffer = NULL;
}
image = gimp_item_get_image (GIMP_ITEM (drawable));
/* Determine if any part of the image has been altered--
* if nothing has, then just return...
*/
if ((core->x2 == core->x1) || (core->y2 == core->y1))
{
gimp_viewable_preview_thaw (GIMP_VIEWABLE (drawable));
return;
}
if (push_undo)
{
GeglBuffer *buffer;
gint x, y, width, height;
gimp_rectangle_intersect (core->x1, core->y1,
core->x2 - core->x1, core->y2 - core->y1,
0, 0,
gimp_item_get_width (GIMP_ITEM (drawable)),
gimp_item_get_height (GIMP_ITEM (drawable)),
&x, &y, &width, &height);
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_PAINT,
core->undo_desc);
GIMP_PAINT_CORE_GET_CLASS (core)->push_undo (core, image, NULL);
buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, width, height),
gimp_drawable_get_format (drawable));
gegl_buffer_copy (core->undo_buffer,
GEGL_RECTANGLE (x, y, width, height),
buffer,
GEGL_RECTANGLE (0, 0, 0, 0));
gimp_drawable_push_undo (drawable, NULL,
buffer, x, y, width, height);
g_object_unref (buffer);
gimp_image_undo_group_end (image);
}
g_object_unref (core->undo_buffer);
core->undo_buffer = NULL;
if (core->saved_proj_buffer)
{
g_object_unref (core->saved_proj_buffer);
core->saved_proj_buffer = NULL;
}
gimp_viewable_preview_thaw (GIMP_VIEWABLE (drawable));
}
void
gimp_channel_combine_rect (GimpChannel *mask,
GimpChannelOps op,
gint x,
gint y,
gint w,
gint h)
{
PixelRegion maskPR;
guchar color;
g_return_if_fail (GIMP_IS_CHANNEL (mask));
if (! gimp_rectangle_intersect (x, y, w, h,
0, 0,
gimp_item_get_width (GIMP_ITEM (mask)),
gimp_item_get_height (GIMP_ITEM (mask)),
&x, &y, &w, &h))
return;
pixel_region_init (&maskPR, gimp_drawable_get_tiles (GIMP_DRAWABLE (mask)),
x, y, w, h, TRUE);
if (op == GIMP_CHANNEL_OP_ADD || op == GIMP_CHANNEL_OP_REPLACE)
color = OPAQUE_OPACITY;
else
color = TRANSPARENT_OPACITY;
color_region (&maskPR, &color);
/* Determine new boundary */
if (mask->bounds_known && (op == GIMP_CHANNEL_OP_ADD) && ! mask->empty)
{
if (x < mask->x1)
mask->x1 = x;
if (y < mask->y1)
mask->y1 = y;
if ((x + w) > mask->x2)
mask->x2 = (x + w);
if ((y + h) > mask->y2)
mask->y2 = (y + h);
}
else if (op == GIMP_CHANNEL_OP_REPLACE || mask->empty)
{
mask->empty = FALSE;
mask->x1 = x;
mask->y1 = y;
mask->x2 = x + w;
mask->y2 = y + h;
}
else
{
mask->bounds_known = FALSE;
}
mask->x1 = CLAMP (mask->x1, 0, gimp_item_get_width (GIMP_ITEM (mask)));
mask->y1 = CLAMP (mask->y1, 0, gimp_item_get_height (GIMP_ITEM (mask)));
mask->x2 = CLAMP (mask->x2, 0, gimp_item_get_width (GIMP_ITEM (mask)));
mask->y2 = CLAMP (mask->y2, 0, gimp_item_get_height (GIMP_ITEM (mask)));
gimp_drawable_update (GIMP_DRAWABLE (mask), x, y, w, h);
}
GeglBuffer *
gimp_drawable_transform_buffer_rotate (GimpDrawable *drawable,
GimpContext *context,
GeglBuffer *orig_buffer,
gint orig_offset_x,
gint orig_offset_y,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result,
GimpColorProfile **buffer_profile,
gint *new_offset_x,
gint *new_offset_y)
{
const Babl *format;
GeglBuffer *new_buffer;
GeglRectangle src_rect;
GeglRectangle dest_rect;
gint orig_x, orig_y;
gint orig_width, orig_height;
gint orig_bpp;
gint new_x, new_y;
gint new_width, new_height;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (GEGL_IS_BUFFER (orig_buffer), NULL);
g_return_val_if_fail (buffer_profile != NULL, NULL);
g_return_val_if_fail (new_offset_x != NULL, NULL);
g_return_val_if_fail (new_offset_y != NULL, NULL);
*buffer_profile =
gimp_color_managed_get_color_profile (GIMP_COLOR_MANAGED (drawable));
orig_x = orig_offset_x;
orig_y = orig_offset_y;
orig_width = gegl_buffer_get_width (orig_buffer);
orig_height = gegl_buffer_get_height (orig_buffer);
orig_bpp = babl_format_get_bytes_per_pixel (gegl_buffer_get_format (orig_buffer));
switch (rotate_type)
{
case GIMP_ROTATE_90:
gimp_drawable_transform_rotate_point (orig_x,
orig_y + orig_height,
rotate_type, center_x, center_y,
&new_x, &new_y);
new_width = orig_height;
new_height = orig_width;
break;
case GIMP_ROTATE_180:
gimp_drawable_transform_rotate_point (orig_x + orig_width,
orig_y + orig_height,
rotate_type, center_x, center_y,
&new_x, &new_y);
new_width = orig_width;
new_height = orig_height;
break;
case GIMP_ROTATE_270:
gimp_drawable_transform_rotate_point (orig_x + orig_width,
orig_y,
rotate_type, center_x, center_y,
&new_x, &new_y);
new_width = orig_height;
new_height = orig_width;
break;
default:
g_return_val_if_reached (NULL);
break;
}
format = gegl_buffer_get_format (orig_buffer);
if (clip_result && (new_x != orig_x || new_y != orig_y ||
new_width != orig_width || new_height != orig_height))
{
GimpRGB bg;
GeglColor *color;
gint clip_x, clip_y;
gint clip_width, clip_height;
new_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
orig_width, orig_height),
format);
*new_offset_x = orig_x;
*new_offset_y = orig_y;
/* Use transparency, rather than the bg color, as the "outside" color of
* channels, and drawables with an alpha channel.
*/
if (GIMP_IS_CHANNEL (drawable) || babl_format_has_alpha (format))
{
gimp_rgba_set (&bg, 0.0, 0.0, 0.0, 0.0);
}
else
{
gimp_context_get_background (context, &bg);
gimp_pickable_srgb_to_image_color (GIMP_PICKABLE (drawable),
&bg, &bg);
}
color = gimp_gegl_color_new (&bg, gimp_drawable_get_space (drawable));
gegl_buffer_set_color (new_buffer, NULL, color);
g_object_unref (color);
if (gimp_rectangle_intersect (orig_x, orig_y, orig_width, orig_height,
new_x, new_y, new_width, new_height,
&clip_x, &clip_y,
&clip_width, &clip_height))
{
gint saved_orig_x = orig_x;
gint saved_orig_y = orig_y;
new_x = clip_x - orig_x;
new_y = clip_y - orig_y;
switch (rotate_type)
{
case GIMP_ROTATE_90:
gimp_drawable_transform_rotate_point (clip_x + clip_width,
clip_y,
GIMP_ROTATE_270,
center_x,
center_y,
&orig_x,
&orig_y);
orig_x -= saved_orig_x;
orig_y -= saved_orig_y;
orig_width = clip_height;
orig_height = clip_width;
break;
case GIMP_ROTATE_180:
orig_x = clip_x - orig_x;
orig_y = clip_y - orig_y;
orig_width = clip_width;
orig_height = clip_height;
break;
case GIMP_ROTATE_270:
gimp_drawable_transform_rotate_point (clip_x,
clip_y + clip_height,
GIMP_ROTATE_90,
center_x,
center_y,
&orig_x,
&orig_y);
orig_x -= saved_orig_x;
orig_y -= saved_orig_y;
orig_width = clip_height;
orig_height = clip_width;
break;
}
new_width = clip_width;
new_height = clip_height;
}
else
{
new_width = 0;
new_height = 0;
}
}
else
{
new_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
new_width, new_height),
format);
*new_offset_x = new_x;
*new_offset_y = new_y;
orig_x = 0;
orig_y = 0;
new_x = 0;
new_y = 0;
}
if (new_width < 1 || new_height < 1)
return new_buffer;
src_rect.x = orig_x;
src_rect.y = orig_y;
src_rect.width = orig_width;
src_rect.height = orig_height;
dest_rect.x = new_x;
dest_rect.y = new_y;
dest_rect.width = new_width;
dest_rect.height = new_height;
switch (rotate_type)
{
case GIMP_ROTATE_90:
{
guchar *buf = g_new (guchar, new_height * orig_bpp);
gint i;
/* Not cool, we leak memory if we return, but anyway that is
* never supposed to happen. If we see this warning, a bug has
* to be fixed!
*/
g_return_val_if_fail (new_height == orig_width, NULL);
src_rect.y = orig_y + orig_height - 1;
src_rect.height = 1;
dest_rect.x = new_x;
dest_rect.width = 1;
for (i = 0; i < orig_height; i++)
{
src_rect.y = orig_y + orig_height - 1 - i;
dest_rect.x = new_x + i;
gegl_buffer_get (orig_buffer, &src_rect, 1.0, NULL, buf,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
gegl_buffer_set (new_buffer, &dest_rect, 0, NULL, buf,
GEGL_AUTO_ROWSTRIDE);
}
g_free (buf);
}
break;
case GIMP_ROTATE_180:
{
guchar *buf = g_new (guchar, new_width * orig_bpp);
gint i, j, k;
/* Not cool, we leak memory if we return, but anyway that is
* never supposed to happen. If we see this warning, a bug has
* to be fixed!
*/
g_return_val_if_fail (new_width == orig_width, NULL);
src_rect.y = orig_y + orig_height - 1;
src_rect.height = 1;
dest_rect.y = new_y;
dest_rect.height = 1;
for (i = 0; i < orig_height; i++)
{
src_rect.y = orig_y + orig_height - 1 - i;
dest_rect.y = new_y + i;
gegl_buffer_get (orig_buffer, &src_rect, 1.0, NULL, buf,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
for (j = 0; j < orig_width / 2; j++)
{
guchar *left = buf + j * orig_bpp;
guchar *right = buf + (orig_width - 1 - j) * orig_bpp;
for (k = 0; k < orig_bpp; k++)
{
guchar tmp = left[k];
left[k] = right[k];
right[k] = tmp;
}
}
gegl_buffer_set (new_buffer, &dest_rect, 0, NULL, buf,
GEGL_AUTO_ROWSTRIDE);
}
g_free (buf);
}
break;
case GIMP_ROTATE_270:
{
guchar *buf = g_new (guchar, new_width * orig_bpp);
gint i;
/* Not cool, we leak memory if we return, but anyway that is
* never supposed to happen. If we see this warning, a bug has
* to be fixed!
*/
g_return_val_if_fail (new_width == orig_height, NULL);
src_rect.x = orig_x + orig_width - 1;
src_rect.width = 1;
dest_rect.y = new_y;
dest_rect.height = 1;
for (i = 0; i < orig_width; i++)
{
src_rect.x = orig_x + orig_width - 1 - i;
dest_rect.y = new_y + i;
gegl_buffer_get (orig_buffer, &src_rect, 1.0, NULL, buf,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
gegl_buffer_set (new_buffer, &dest_rect, 0, NULL, buf,
GEGL_AUTO_ROWSTRIDE);
}
g_free (buf);
}
break;
}
return new_buffer;
}
static void
gimp_image_map_tool_options_notify (GimpTool *tool,
GimpToolOptions *options,
const GParamSpec *pspec)
{
GimpImageMapTool *im_tool = GIMP_IMAGE_MAP_TOOL (tool);
GimpImageMapOptions *im_options = GIMP_IMAGE_MAP_OPTIONS (options);
if (! strcmp (pspec->name, "preview") &&
im_tool->image_map)
{
if (im_options->preview)
{
gimp_tool_control_push_preserve (tool->control, TRUE);
gimp_image_map_apply (im_tool->image_map, NULL);
gimp_tool_control_pop_preserve (tool->control);
if (im_options->preview_split)
gimp_image_map_tool_add_guide (im_tool);
}
else
{
gimp_tool_control_push_preserve (tool->control, TRUE);
gimp_image_map_abort (im_tool->image_map);
gimp_tool_control_pop_preserve (tool->control);
if (im_options->preview_split)
gimp_image_map_tool_remove_guide (im_tool);
}
}
else if (! strcmp (pspec->name, "preview-split") &&
im_tool->image_map)
{
if (im_options->preview_split)
{
GimpDisplayShell *shell = gimp_display_get_shell (tool->display);
GimpItem *item = GIMP_ITEM (im_tool->drawable);
gint x, y, width, height;
gimp_display_shell_untransform_viewport (shell,
&x, &y, &width, &height);
if (gimp_rectangle_intersect (gimp_item_get_offset_x (item),
gimp_item_get_offset_y (item),
gimp_item_get_width (item),
gimp_item_get_height (item),
x, y, width, height,
&x, &y, &width, &height))
{
gdouble position;
if (im_options->preview_alignment == GIMP_ALIGN_LEFT ||
im_options->preview_alignment == GIMP_ALIGN_RIGHT)
{
position = ((gdouble) ((x + width / 2) -
gimp_item_get_offset_x (item)) /
(gdouble) gimp_item_get_width (item));
}
else
{
position = ((gdouble) ((y + height / 2) -
gimp_item_get_offset_y (item)) /
(gdouble) gimp_item_get_height (item));
}
g_object_set (options,
"preview-position", CLAMP (position, 0.0, 1.0),
NULL);
}
}
gimp_image_map_set_preview (im_tool->image_map,
im_options->preview_split,
im_options->preview_alignment,
im_options->preview_position);
if (im_options->preview_split)
gimp_image_map_tool_add_guide (im_tool);
else
gimp_image_map_tool_remove_guide (im_tool);
}
else if (! strcmp (pspec->name, "preview-alignment") &&
im_tool->image_map)
{
gimp_image_map_set_preview (im_tool->image_map,
im_options->preview_split,
im_options->preview_alignment,
im_options->preview_position);
if (im_options->preview_split)
gimp_image_map_tool_move_guide (im_tool);
}
else if (! strcmp (pspec->name, "preview-position") &&
im_tool->image_map)
{
gimp_image_map_set_preview (im_tool->image_map,
im_options->preview_split,
im_options->preview_alignment,
im_options->preview_position);
if (im_options->preview_split)
gimp_image_map_tool_move_guide (im_tool);
}
else if (! strcmp (pspec->name, "region") &&
im_tool->image_map)
{
gimp_image_map_set_region (im_tool->image_map, im_options->region);
gimp_image_map_tool_preview (im_tool);
}
}
void
gimp_drawable_real_apply_buffer (GimpDrawable *drawable,
GeglBuffer *buffer,
const GeglRectangle *buffer_region,
gboolean push_undo,
const gchar *undo_desc,
gdouble opacity,
GimpLayerModeEffects mode,
GeglBuffer *base_buffer,
gint base_x,
gint base_y)
{
GimpItem *item = GIMP_ITEM (drawable);
GimpImage *image = gimp_item_get_image (item);
GimpChannel *mask = gimp_image_get_mask (image);
GeglBuffer *mask_buffer = NULL;
GeglNode *apply;
GimpComponentMask affect;
gint x, y, width, height;
gint offset_x, offset_y;
/* don't apply the mask to itself and don't apply an empty mask */
if (GIMP_DRAWABLE (mask) == drawable || gimp_channel_is_empty (mask))
mask = NULL;
if (! base_buffer)
base_buffer = gimp_drawable_get_buffer (drawable);
/* get the layer offsets */
gimp_item_get_offset (item, &offset_x, &offset_y);
/* make sure the image application coordinates are within drawable bounds */
gimp_rectangle_intersect (base_x, base_y,
buffer_region->width, buffer_region->height,
0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item),
&x, &y, &width, &height);
if (mask)
{
GimpItem *mask_item = GIMP_ITEM (mask);
/* make sure coordinates are in mask bounds ...
* we need to add the layer offset to transform coords
* into the mask coordinate system
*/
gimp_rectangle_intersect (x, y, width, height,
-offset_x, -offset_y,
gimp_item_get_width (mask_item),
gimp_item_get_height (mask_item),
&x, &y, &width, &height);
}
if (push_undo)
{
GimpDrawableUndo *undo;
gimp_drawable_push_undo (drawable, undo_desc,
NULL, x, y, width, height);
undo = GIMP_DRAWABLE_UNDO (gimp_image_undo_get_fadeable (image));
if (undo)
{
undo->paint_mode = mode;
undo->opacity = opacity;
undo->applied_buffer =
gegl_buffer_new (GEGL_RECTANGLE (0, 0, width, height),
gegl_buffer_get_format (buffer));
gegl_buffer_copy (buffer,
GEGL_RECTANGLE (buffer_region->x + (x - base_x),
buffer_region->y + (y - base_y),
width, height),
undo->applied_buffer,
GEGL_RECTANGLE (0, 0, width, height));
}
}
if (mask)
mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
affect = gimp_drawable_get_active_mask (drawable);
apply = gimp_gegl_create_apply_buffer_node (buffer,
base_x - buffer_region->x,
base_y - buffer_region->y,
0,
0,
0,
0,
mask_buffer,
-offset_x,
-offset_y,
opacity,
mode,
affect);
gimp_gegl_apply_operation (base_buffer, NULL, NULL,
apply,
gimp_drawable_get_buffer (drawable),
GEGL_RECTANGLE (x, y, width, height));
g_object_unref (apply);
}
void
gimp_paint_core_paste (GimpPaintCore *core,
PixelRegion *paint_maskPR,
GimpDrawable *drawable,
gdouble paint_opacity,
gdouble image_opacity,
GimpLayerModeEffects paint_mode,
GimpPaintApplicationMode mode)
{
TileManager *alt = NULL;
PixelRegion srcPR;
/* set undo blocks */
gimp_paint_core_validate_undo_tiles (core, drawable,
core->canvas_buf->x,
core->canvas_buf->y,
core->canvas_buf->width,
core->canvas_buf->height);
if (core->use_saved_proj)
{
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
GimpProjection *projection = gimp_image_get_projection (image);
gint off_x;
gint off_y;
gint x, y;
gint w, h;
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
if (gimp_rectangle_intersect (core->canvas_buf->x + off_x,
core->canvas_buf->y + off_y,
core->canvas_buf->width,
core->canvas_buf->height,
0, 0,
tile_manager_width (core->saved_proj_tiles),
tile_manager_height (core->saved_proj_tiles),
&x, &y, &w, &h))
{
gimp_paint_core_validate_saved_proj_tiles (core,
GIMP_PICKABLE (projection),
x, y, w, h);
}
}
/* If the mode is CONSTANT:
* combine the canvas buf, the paint mask to the canvas tiles
*/
if (mode == GIMP_PAINT_CONSTANT)
{
/* Some tools (ink) paint the mask to paint_core->canvas_tiles
* directly. Don't need to copy it in this case.
*/
if (paint_maskPR->tiles != core->canvas_tiles)
{
/* initialize any invalid canvas tiles */
gimp_paint_core_validate_canvas_tiles (core,
core->canvas_buf->x,
core->canvas_buf->y,
core->canvas_buf->width,
core->canvas_buf->height);
paint_mask_to_canvas_tiles (core, paint_maskPR, paint_opacity);
}
canvas_tiles_to_canvas_buf (core);
alt = core->undo_tiles;
}
/* Otherwise:
* combine the canvas buf and the paint mask to the canvas buf
*/
else
{
paint_mask_to_canvas_buf (core, paint_maskPR, paint_opacity);
}
/* intialize canvas buf source pixel regions */
pixel_region_init_temp_buf (&srcPR, core->canvas_buf,
0, 0,
core->canvas_buf->width,
core->canvas_buf->height);
/* apply the paint area to the image */
gimp_drawable_apply_region (drawable, &srcPR,
FALSE, NULL,
image_opacity, paint_mode,
alt, /* specify an alternative src1 */
NULL,
core->canvas_buf->x,
core->canvas_buf->y);
/* Update the undo extents */
core->x1 = MIN (core->x1, core->canvas_buf->x);
core->y1 = MIN (core->y1, core->canvas_buf->y);
core->x2 = MAX (core->x2, core->canvas_buf->x + core->canvas_buf->width);
core->y2 = MAX (core->y2, core->canvas_buf->y + core->canvas_buf->height);
/* Update the drawable */
gimp_drawable_update (drawable,
core->canvas_buf->x,
core->canvas_buf->y,
core->canvas_buf->width,
core->canvas_buf->height);
}
/* Similar to gimp_drawable_apply_region but works in "replace" mode (i.e.
* transparent pixels in src2 make the result transparent rather than
* opaque.
*
* Takes an additional mask pixel region as well.
*/
void
gimp_drawable_real_replace_buffer (GimpDrawable *drawable,
GeglBuffer *buffer,
const GeglRectangle *buffer_region,
gboolean push_undo,
const gchar *undo_desc,
gdouble opacity,
GeglBuffer *mask_buffer,
const GeglRectangle *mask_buffer_region,
gint dest_x,
gint dest_y)
{
GimpItem *item = GIMP_ITEM (drawable);
GimpImage *image = gimp_item_get_image (item);
GimpChannel *mask = gimp_image_get_mask (image);
GeglBuffer *drawable_buffer;
gint x, y, width, height;
gint offset_x, offset_y;
gboolean active_components[MAX_CHANNELS];
/* don't apply the mask to itself and don't apply an empty mask */
if (GIMP_DRAWABLE (mask) == drawable || gimp_channel_is_empty (mask))
mask = NULL;
/* configure the active channel array */
gimp_drawable_get_active_components (drawable, active_components);
/* get the layer offsets */
gimp_item_get_offset (item, &offset_x, &offset_y);
/* make sure the image application coordinates are within drawable bounds */
gimp_rectangle_intersect (dest_x, dest_y,
buffer_region->width, buffer_region->height,
0, 0,
gimp_item_get_width (item),
gimp_item_get_height (item),
&x, &y, &width, &height);
if (mask)
{
GimpItem *mask_item = GIMP_ITEM (mask);
/* make sure coordinates are in mask bounds ...
* we need to add the layer offset to transform coords
* into the mask coordinate system
*/
gimp_rectangle_intersect (x, y, width, height,
-offset_x, -offset_y,
gimp_item_get_width (mask_item),
gimp_item_get_height (mask_item),
&x, &y, &width, &height);
}
/* If the calling procedure specified an undo step... */
if (push_undo)
gimp_drawable_push_undo (drawable, undo_desc,
NULL, x, y, width, height);
drawable_buffer = gimp_drawable_get_buffer (drawable);
if (mask)
{
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
src_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
dest_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, width, height),
gegl_buffer_get_format (src_buffer));
gegl_buffer_copy (src_buffer,
GEGL_RECTANGLE (x + offset_x, y + offset_y,
width, height),
dest_buffer,
GEGL_RECTANGLE (0, 0, 0, 0));
gimp_gegl_combine_mask (mask_buffer, mask_buffer_region,
dest_buffer, GEGL_RECTANGLE (0, 0, width, height),
1.0);
gimp_gegl_replace (buffer, buffer_region,
drawable_buffer, GEGL_RECTANGLE (x, y, width, height),
dest_buffer, GEGL_RECTANGLE (0, 0, width, height),
drawable_buffer, GEGL_RECTANGLE (x, y, width, height),
opacity,
active_components);
g_object_unref (dest_buffer);
}
else
{
gimp_gegl_replace (buffer, buffer_region,
drawable_buffer, GEGL_RECTANGLE (x, y, width, height),
mask_buffer, mask_buffer_region,
drawable_buffer, GEGL_RECTANGLE (x, y, width, height),
opacity,
active_components);
}
}
void
gimp_drawable_bucket_fill (GimpDrawable *drawable,
GimpFillOptions *options,
gboolean fill_transparent,
GimpSelectCriterion fill_criterion,
gdouble threshold,
gboolean sample_merged,
gboolean diagonal_neighbors,
gdouble seed_x,
gdouble seed_y)
{
GimpImage *image;
GimpPickable *pickable;
GeglBuffer *buffer;
GeglBuffer *mask_buffer;
gboolean antialias;
gint x, y, width, height;
gint mask_offset_x = 0;
gint mask_offset_y = 0;
gint sel_x, sel_y, sel_width, sel_height;
g_return_if_fail (GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)));
g_return_if_fail (GIMP_IS_FILL_OPTIONS (options));
image = gimp_item_get_image (GIMP_ITEM (drawable));
if (! gimp_item_mask_intersect (GIMP_ITEM (drawable),
&sel_x, &sel_y, &sel_width, &sel_height))
return;
gimp_set_busy (image->gimp);
if (sample_merged)
pickable = GIMP_PICKABLE (image);
else
pickable = GIMP_PICKABLE (drawable);
antialias = gimp_fill_options_get_antialias (options);
/* Do a seed bucket fill...To do this, calculate a new
* contiguous region.
*/
mask_buffer = gimp_pickable_contiguous_region_by_seed (pickable,
antialias,
threshold,
fill_transparent,
fill_criterion,
diagonal_neighbors,
(gint) seed_x,
(gint) seed_y);
gimp_gegl_mask_bounds (mask_buffer, &x, &y, &width, &height);
width -= x;
height -= y;
/* If there is a selection, inersect the region bounds
* with the selection bounds, to avoid processing areas
* that are going to be masked out anyway. The actual
* intersection of the fill region with the mask data
* happens when combining the fill buffer, in
* gimp_drawable_apply_buffer().
*/
if (! gimp_channel_is_empty (gimp_image_get_mask (image)))
{
gint off_x = 0;
gint off_y = 0;
if (sample_merged)
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
if (! gimp_rectangle_intersect (x, y, width, height,
sel_x + off_x, sel_y + off_y,
sel_width, sel_height,
&x, &y, &width, &height))
{
/* The fill region and the selection are disjoint; bail. */
g_object_unref (mask_buffer);
gimp_unset_busy (image->gimp);
return;
}
}
/* make sure we handle the mask correctly if it was sample-merged */
if (sample_merged)
{
GimpItem *item = GIMP_ITEM (drawable);
gint off_x, off_y;
/* Limit the channel bounds to the drawable's extents */
gimp_item_get_offset (item, &off_x, &off_y);
gimp_rectangle_intersect (x, y, width, height,
off_x, off_y,
gimp_item_get_width (item),
gimp_item_get_height (item),
&x, &y, &width, &height);
mask_offset_x = x;
mask_offset_y = y;
/* translate mask bounds to drawable coords */
x -= off_x;
y -= off_y;
}
else
{
mask_offset_x = x;
mask_offset_y = y;
}
buffer = gimp_fill_options_create_buffer (options, drawable,
GEGL_RECTANGLE (0, 0,
width, height));
gimp_gegl_apply_opacity (buffer, NULL, NULL, buffer,
mask_buffer,
-mask_offset_x,
-mask_offset_y,
1.0);
g_object_unref (mask_buffer);
/* Apply it to the image */
gimp_drawable_apply_buffer (drawable, buffer,
GEGL_RECTANGLE (0, 0, width, height),
TRUE, C_("undo-type", "Bucket Fill"),
gimp_context_get_opacity (GIMP_CONTEXT (options)),
gimp_context_get_paint_mode (GIMP_CONTEXT (options)),
NULL, x, y);
g_object_unref (buffer);
gimp_drawable_update (drawable, x, y, width, height);
gimp_unset_busy (image->gimp);
}
void
gimp_edit_get_paste_offset (GimpImage *image,
GimpDrawable *drawable,
GimpObject *paste,
gint viewport_x,
gint viewport_y,
gint viewport_width,
gint viewport_height,
gint *offset_x,
gint *offset_y)
{
gint image_width;
gint image_height;
gint width;
gint height;
gboolean clamp_to_image = TRUE;
g_return_if_fail (GIMP_IS_IMAGE (image));
g_return_if_fail (drawable == NULL || GIMP_IS_DRAWABLE (drawable));
g_return_if_fail (drawable == NULL ||
gimp_item_is_attached (GIMP_ITEM (drawable)));
g_return_if_fail (GIMP_IS_VIEWABLE (paste));
g_return_if_fail (offset_x != NULL);
g_return_if_fail (offset_y != NULL);
image_width = gimp_image_get_width (image);
image_height = gimp_image_get_height (image);
gimp_viewable_get_size (GIMP_VIEWABLE (paste), &width, &height);
if (viewport_width == image_width &&
viewport_height == image_height)
{
/* if the whole image is visible, act as if there was no viewport */
viewport_x = 0;
viewport_y = 0;
viewport_width = 0;
viewport_height = 0;
}
if (drawable)
{
/* if pasting to a drawable */
GimpContainer *children;
gint off_x, off_y;
gint target_x, target_y;
gint target_width, target_height;
gint paste_x, paste_y;
gint paste_width, paste_height;
gboolean have_mask;
have_mask = ! gimp_channel_is_empty (gimp_image_get_mask (image));
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
children = gimp_viewable_get_children (GIMP_VIEWABLE (drawable));
if (children && gimp_container_get_n_children (children) == 0)
{
/* treat empty layer groups as image-sized, use the selection
* as target
*/
gimp_item_bounds (GIMP_ITEM (gimp_image_get_mask (image)),
&target_x, &target_y,
&target_width, &target_height);
}
else
{
gimp_item_mask_intersect (GIMP_ITEM (drawable),
&target_x, &target_y,
&target_width, &target_height);
}
if (! have_mask && /* if we have no mask */
viewport_width > 0 && /* and we have a viewport */
viewport_height > 0 &&
(width < target_width || /* and the paste is smaller than the target */
height < target_height) &&
/* and the viewport intersects with the target */
gimp_rectangle_intersect (viewport_x, viewport_y,
viewport_width, viewport_height,
off_x, off_y, /* target_x,y are 0 */
target_width, target_height,
&paste_x, &paste_y,
&paste_width, &paste_height))
{
/* center on the viewport */
*offset_x = paste_x + (paste_width - width) / 2;
*offset_y = paste_y + (paste_height- height) / 2;
}
else
{
/* otherwise center on the target */
*offset_x = off_x + target_x + (target_width - width) / 2;
*offset_y = off_y + target_y + (target_height - height) / 2;
/* and keep it that way */
clamp_to_image = FALSE;
}
}
else if (viewport_width > 0 && /* if we have a viewport */
viewport_height > 0 &&
(width < image_width || /* and the paste is */
height < image_height)) /* smaller than the image */
{
/* center on the viewport */
*offset_x = viewport_x + (viewport_width - width) / 2;
*offset_y = viewport_y + (viewport_height - height) / 2;
}
else
{
/* otherwise center on the image */
*offset_x = (image_width - width) / 2;
*offset_y = (image_height - height) / 2;
/* and keep it that way */
clamp_to_image = FALSE;
}
if (clamp_to_image)
{
/* Ensure that the pasted layer is always within the image, if it
* fits and aligned at top left if it doesn't. (See bug #142944).
*/
*offset_x = MIN (*offset_x, image_width - width);
*offset_y = MIN (*offset_y, image_height - height);
*offset_x = MAX (*offset_x, 0);
*offset_y = MAX (*offset_y, 0);
}
}
GeglBuffer *
gimp_drawable_transform_buffer_rotate (GimpDrawable *drawable,
GimpContext *context,
GeglBuffer *orig_buffer,
gint orig_offset_x,
gint orig_offset_y,
GimpRotationType rotate_type,
gdouble center_x,
gdouble center_y,
gboolean clip_result,
gint *new_offset_x,
gint *new_offset_y)
{
GeglBuffer *new_buffer;
GeglRectangle src_rect;
GeglRectangle dest_rect;
gint orig_x, orig_y;
gint orig_width, orig_height;
gint orig_bpp;
gint new_x, new_y;
gint new_width, new_height;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (GEGL_IS_BUFFER (orig_buffer), NULL);
orig_x = orig_offset_x;
orig_y = orig_offset_y;
orig_width = gegl_buffer_get_width (orig_buffer);
orig_height = gegl_buffer_get_height (orig_buffer);
orig_bpp = babl_format_get_bytes_per_pixel (gegl_buffer_get_format (orig_buffer));
switch (rotate_type)
{
case GIMP_ROTATE_90:
gimp_drawable_transform_rotate_point (orig_x,
orig_y + orig_height,
rotate_type, center_x, center_y,
&new_x, &new_y);
new_width = orig_height;
new_height = orig_width;
break;
case GIMP_ROTATE_180:
gimp_drawable_transform_rotate_point (orig_x + orig_width,
orig_y + orig_height,
rotate_type, center_x, center_y,
&new_x, &new_y);
new_width = orig_width;
new_height = orig_height;
break;
case GIMP_ROTATE_270:
gimp_drawable_transform_rotate_point (orig_x + orig_width,
orig_y,
rotate_type, center_x, center_y,
&new_x, &new_y);
new_width = orig_height;
new_height = orig_width;
break;
default:
g_return_val_if_reached (NULL);
break;
}
if (clip_result && (new_x != orig_x || new_y != orig_y ||
new_width != orig_width || new_height != orig_height))
{
GimpRGB bg;
GeglColor *color;
gint clip_x, clip_y;
gint clip_width, clip_height;
new_buffer = gimp_gegl_buffer_new (GEGL_RECTANGLE (0, 0,
orig_width, orig_height),
gegl_buffer_get_format (orig_buffer));
*new_offset_x = orig_x;
*new_offset_y = orig_y;
/* "Outside" a channel is transparency, not the bg color */
if (GIMP_IS_CHANNEL (drawable))
gimp_rgba_set (&bg, 0.0, 0.0, 0.0, 0.0);
else
gimp_context_get_background (context, &bg);
color = gimp_gegl_color_new (&bg);
gegl_buffer_set_color (new_buffer, NULL, color);
g_object_unref (color);
if (gimp_rectangle_intersect (orig_x, orig_y, orig_width, orig_height,
new_x, new_y, new_width, new_height,
&clip_x, &clip_y,
&clip_width, &clip_height))
{
gint saved_orig_x = orig_x;
gint saved_orig_y = orig_y;
new_x = clip_x - orig_x;
new_y = clip_y - orig_y;
switch (rotate_type)
{
case GIMP_ROTATE_90:
gimp_drawable_transform_rotate_point (clip_x + clip_width,
clip_y,
GIMP_ROTATE_270,
center_x,
center_y,
&orig_x,
&orig_y);
orig_x -= saved_orig_x;
orig_y -= saved_orig_y;
orig_width = clip_height;
orig_height = clip_width;
break;
case GIMP_ROTATE_180:
orig_x = clip_x - orig_x;
orig_y = clip_y - orig_y;
orig_width = clip_width;
orig_height = clip_height;
break;
case GIMP_ROTATE_270:
gimp_drawable_transform_rotate_point (clip_x,
clip_y + clip_height,
GIMP_ROTATE_90,
center_x,
center_y,
&orig_x,
&orig_y);
orig_x -= saved_orig_x;
orig_y -= saved_orig_y;
orig_width = clip_height;
orig_height = clip_width;
break;
}
new_width = clip_width;
new_height = clip_height;
}
else
{
new_width = 0;
new_height = 0;
}
}
else
{
new_buffer = gimp_gegl_buffer_new (GEGL_RECTANGLE (0, 0,
new_width, new_height),
gegl_buffer_get_format (orig_buffer));
*new_offset_x = new_x;
*new_offset_y = new_y;
orig_x = 0;
orig_y = 0;
new_x = 0;
new_y = 0;
}
if (new_width < 1 || new_height < 1)
return new_buffer;
src_rect.x = orig_x;
src_rect.y = orig_y;
src_rect.width = orig_width;
src_rect.height = orig_height;
dest_rect.x = new_x;
dest_rect.y = new_y;
dest_rect.width = new_width;
dest_rect.height = new_height;
switch (rotate_type)
{
case GIMP_ROTATE_90:
{
guchar *buf = g_new (guchar, new_height * orig_bpp);
gint i;
g_assert (new_height == orig_width);
src_rect.y = orig_y + orig_height - 1;
src_rect.height = 1;
dest_rect.x = new_x;
dest_rect.width = 1;
for (i = 0; i < orig_height; i++)
{
src_rect.y = orig_y + orig_height - 1 - i;
dest_rect.x = new_x + i;
gegl_buffer_get (orig_buffer, &src_rect, 1.0, NULL, buf,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
gegl_buffer_set (new_buffer, &dest_rect, 0, NULL, buf,
GEGL_AUTO_ROWSTRIDE);
}
g_free (buf);
}
break;
case GIMP_ROTATE_180:
{
guchar *buf = g_new (guchar, new_width * orig_bpp);
gint i, j, k;
g_assert (new_width == orig_width);
src_rect.y = orig_y + orig_height - 1;
src_rect.height = 1;
dest_rect.y = new_y;
dest_rect.height = 1;
for (i = 0; i < orig_height; i++)
{
src_rect.y = orig_y + orig_height - 1 - i;
dest_rect.y = new_y + i;
gegl_buffer_get (orig_buffer, &src_rect, 1.0, NULL, buf,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
for (j = 0; j < orig_width / 2; j++)
{
guchar *left = buf + j * orig_bpp;
guchar *right = buf + (orig_width - 1 - j) * orig_bpp;
for (k = 0; k < orig_bpp; k++)
{
guchar tmp = left[k];
left[k] = right[k];
right[k] = tmp;
}
}
gegl_buffer_set (new_buffer, &dest_rect, 0, NULL, buf,
GEGL_AUTO_ROWSTRIDE);
}
g_free (buf);
}
break;
case GIMP_ROTATE_270:
{
guchar *buf = g_new (guchar, new_width * orig_bpp);
gint i;
g_assert (new_width == orig_height);
src_rect.x = orig_x + orig_width - 1;
src_rect.width = 1;
dest_rect.y = new_y;
dest_rect.height = 1;
for (i = 0; i < orig_width; i++)
{
src_rect.x = orig_x + orig_width - 1 - i;
dest_rect.y = new_y + i;
gegl_buffer_get (orig_buffer, &src_rect, 1.0, NULL, buf,
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_NONE);
gegl_buffer_set (new_buffer, &dest_rect, 0, NULL, buf,
GEGL_AUTO_ROWSTRIDE);
}
g_free (buf);
}
break;
}
return new_buffer;
}
GimpLayer *
gimp_edit_paste (GimpImage *image,
GimpDrawable *drawable,
GimpBuffer *paste,
gboolean paste_into,
gint viewport_x,
gint viewport_y,
gint viewport_width,
gint viewport_height)
{
GimpLayer *layer;
const Babl *format;
gint image_width;
gint image_height;
gint width;
gint height;
gint offset_x;
gint offset_y;
gboolean clamp_to_image = TRUE;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (drawable == NULL || GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (drawable == NULL ||
gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
g_return_val_if_fail (GIMP_IS_BUFFER (paste), NULL);
/* Make a new layer: if drawable == NULL,
* user is pasting into an empty image.
*/
if (drawable)
format = gimp_drawable_get_format_with_alpha (drawable);
else
format = gimp_image_get_layer_format (image, TRUE);
layer = gimp_layer_new_from_buffer (paste, image,
format,
_("Pasted Layer"),
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (! layer)
return NULL;
image_width = gimp_image_get_width (image);
image_height = gimp_image_get_height (image);
width = gimp_item_get_width (GIMP_ITEM (layer));
height = gimp_item_get_height (GIMP_ITEM (layer));
if (viewport_width == image_width &&
viewport_height == image_height)
{
/* if the whole image is visible, act as if there was no viewport */
viewport_x = 0;
viewport_y = 0;
viewport_width = 0;
viewport_height = 0;
}
if (drawable)
{
/* if pasting to a drawable */
gint off_x, off_y;
gint x1, y1, x2, y2;
gint paste_x, paste_y;
gint paste_width, paste_height;
gboolean have_mask;
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
have_mask = gimp_item_mask_bounds (GIMP_ITEM (drawable),
&x1, &y1, &x2, &y2);
if (! have_mask && /* if we have no mask */
viewport_width > 0 && /* and we have a viewport */
viewport_height > 0 &&
(width < (x2 - x1) || /* and the paste is smaller than the target */
height < (y2 - y1)) &&
/* and the viewport intersects with the target */
gimp_rectangle_intersect (viewport_x, viewport_y,
viewport_width, viewport_height,
off_x, off_y,
x2 - x1, y2 - y1,
&paste_x, &paste_y,
&paste_width, &paste_height))
{
/* center on the viewport */
offset_x = paste_x + (paste_width - width) / 2;
offset_y = paste_y + (paste_height- height) / 2;
}
else
{
/* otherwise center on the target */
offset_x = off_x + ((x1 + x2) - width) / 2;
offset_y = off_y + ((y1 + y2) - height) / 2;
/* and keep it that way */
clamp_to_image = FALSE;
}
}
else if (viewport_width > 0 && /* if we have a viewport */
viewport_height > 0 &&
(width < image_width || /* and the paste is */
height < image_height)) /* smaller than the image */
{
/* center on the viewport */
offset_x = viewport_x + (viewport_width - width) / 2;
offset_y = viewport_y + (viewport_height - height) / 2;
}
else
{
/* otherwise center on the image */
offset_x = (image_width - width) / 2;
offset_y = (image_height - height) / 2;
/* and keep it that way */
clamp_to_image = FALSE;
}
if (clamp_to_image)
{
/* Ensure that the pasted layer is always within the image, if it
* fits and aligned at top left if it doesn't. (See bug #142944).
*/
offset_x = MIN (offset_x, image_width - width);
offset_y = MIN (offset_y, image_height - height);
offset_x = MAX (offset_x, 0);
offset_y = MAX (offset_y, 0);
}
gimp_item_set_offset (GIMP_ITEM (layer), offset_x, offset_y);
/* Start a group undo */
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_EDIT_PASTE,
C_("undo-type", "Paste"));
/* If there is a selection mask clear it--
* this might not always be desired, but in general,
* it seems like the correct behavior.
*/
if (! gimp_channel_is_empty (gimp_image_get_mask (image)) && ! paste_into)
gimp_channel_clear (gimp_image_get_mask (image), NULL, TRUE);
/* if there's a drawable, add a new floating selection */
if (drawable)
floating_sel_attach (layer, drawable);
else
gimp_image_add_layer (image, layer, NULL, 0, TRUE);
/* end the group undo */
gimp_image_undo_group_end (image);
return layer;
}
/* --------------------------------------------
* p_attempt_locate_at_current_offset
* --------------------------------------------
*/
static void
p_attempt_locate_at_current_offset(Context *context, gint32 px, gint32 py)
{
GimpPixelRgn refPR;
GimpPixelRgn targetPR;
gpointer pr;
gint rx1, ry1, rWidth, rHeight;
gint tx1, ty1, tWidth, tHeight;
gint commonAreaWidth, commonAreaHeight;
gint fullShapeWidth, fullShapeHeight;
gint rWidthRequired, rHeightRequired;
gboolean isIntersect;
gint leftShapeRadius;
gint upperShapeRadius;
if (context->isFinishedFlag)
{
return;
}
fullShapeWidth = (2 * context->refShapeRadius);
fullShapeHeight = (2 * context->refShapeRadius);
/* calculate processing relevant intersecting reference / target rectangles */
isIntersect =
gimp_rectangle_intersect((context->refX - context->refShapeRadius) /* origin1 */
, (context->refY - context->refShapeRadius)
, fullShapeWidth /* width1 */
, fullShapeHeight /* height1 */
,0
,0
,context->refDrawable->width
,context->refDrawable->height
,&rx1
,&ry1
,&rWidth
,&rHeight
);
if (!isIntersect)
{
return;
}
leftShapeRadius = context->refX - rx1;
upperShapeRadius = context->refY - ry1;
isIntersect =
gimp_rectangle_intersect((px - leftShapeRadius) /* origin1 */
, (py - upperShapeRadius)
, rWidth /* width1 */
, rHeight /* height1 */
,0
,0
,context->targetDrawable->width
,context->targetDrawable->height
,&tx1
,&ty1
,&tWidth
,&tHeight
);
if (!isIntersect)
{
return;
}
commonAreaWidth = tWidth;
commonAreaHeight = tHeight;
// TODO test if 2/3 of the fullShapeWidth and fullShapeHeight is sufficient for usable results.
// alternative1: maybe require rWidth and rHeight
// alternative2: maybe require fullShapeWidth and fullShapeHeight
rWidthRequired = (fullShapeWidth * 2) / 3;
rHeightRequired = (fullShapeHeight * 2) / 3;
if ((commonAreaWidth < rWidthRequired)
|| (commonAreaHeight < rHeightRequired))
{
/* the common area is significant smaller than the reference shape
* skip the compare attempt in this case to avoid unpredictable results (near borders)
*/
return;
}
// if(gap_debug)
// {
// printf("p_attempt_locate_at: px: %04d py:%04d\n"
// " rx1:%04d ry1:%04d rWidth:%d rHeight:%d\n"
// " tx1:%04d ty1:%04d tWidth:%d tHeight:%d\n"
// " commonAreaWidth:%d commonAreaHeight:%d\n"
// ,(int)px
// ,(int)py
// ,(int)rx1
// ,(int)ry1
// ,(int)rWidth
// ,(int)rHeight
// ,(int)tx1
// ,(int)ty1
// ,(int)tWidth
// ,(int)tHeight
// ,(int)commonAreaWidth
// ,(int)commonAreaHeight
// );
// }
/* rest 'per offset' values in the context */
context->cancelAttemptFlag = FALSE;
context->sumDiffValue = 0;
context->involvedPixelCount = 0;
context->currentDistance = p_calculate_distance_to_ref_coord(context, px, py);
context->px = px;
context->py = py;
gimp_pixel_rgn_init (&refPR, context->refDrawable, rx1, ry1
, commonAreaWidth, commonAreaHeight
, FALSE /* dirty */
, FALSE /* shadow */
);
gimp_pixel_rgn_init (&targetPR, context->targetDrawable, tx1, ty1
, commonAreaWidth, commonAreaHeight
, FALSE /* dirty */
, FALSE /* shadow */
);
/* compare pixel areas in tiled portions via pixel region processing loops.
*/
for (pr = gimp_pixel_rgns_register (2, &refPR, &targetPR);
pr != NULL;
pr = gimp_pixel_rgns_process (pr))
{
if (context->cancelAttemptFlag)
{
break;
}
else
{
p_compare_regions(&refPR, &targetPR, context);
}
}
if (pr != NULL)
{
/* NOTE:
* early escaping from the loop with pr != NULL
* leads to memory leaks due to unbalanced tile ref/unref calls.
* the call to gap_gimp_pixel_rgns_unref cals unref on the current tile
* (in the same way as gimp_pixel_rgns_process does)
* but does not ref another available tile.
*/
gap_gimp_pixel_rgns_unref (pr);
}
if ((context->involvedPixelCount >= context->requiredPixelCount)
&& (context->sumDiffValue <= context->bestMatchingSumDiffValue))
{
if((context->sumDiffValue < context->bestMatchingSumDiffValue)
|| ( context->currentDistance < context->bestMatchingDistance))
{
context->bestMatchingSumDiffValue = context->sumDiffValue;
context->bestMatchingDistance = context->currentDistance;
context->bestMatchingPixelCount = context->involvedPixelCount;
context->bestX = px;
context->bestY = py;
if(gap_debug)
{
gdouble bestMatchingAvgColordiff;
bestMatchingAvgColordiff = p_calculate_average_colordiff(context->bestMatchingSumDiffValue
, context->bestMatchingPixelCount
);
printf("FOUND: bestX:%d bestY:%d squareDist:%d\n"
" sumDiffValues:%d pixelCount:%d bestMatchingAvgColordiff:%.5f\n"
, (int)context->bestX
, (int)context->bestY
, (int)context->bestMatchingDistance
, (int)context->bestMatchingSumDiffValue
, (int)context->bestMatchingPixelCount
, (float)bestMatchingAvgColordiff
);
}
if ((context->currentDistance <= context->veryNearDistance)
&& (context->sumDiffValue == 0))
{
/* stop all further attempts on exact matching area when near reference origin */
context->isFinishedFlag = TRUE;
}
}
}
} /* end p_attempt_locate_at_current_offset */
static GeglBuffer *
gimp_perspective_clone_get_source (GimpSourceCore *source_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpPickable *src_pickable,
gint src_offset_x,
gint src_offset_y,
GeglBuffer *paint_buffer,
gint paint_buffer_x,
gint paint_buffer_y,
gint *paint_area_offset_x,
gint *paint_area_offset_y,
gint *paint_area_width,
gint *paint_area_height,
GeglRectangle *src_rect)
{
GimpPerspectiveClone *clone = GIMP_PERSPECTIVE_CLONE (source_core);
GimpCloneOptions *clone_options = GIMP_CLONE_OPTIONS (paint_options);
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
const Babl *src_format_alpha;
gint x1d, y1d, x2d, y2d;
gdouble x1s, y1s, x2s, y2s, x3s, y3s, x4s, y4s;
gint xmin, ymin, xmax, ymax;
GimpMatrix3 matrix;
GimpMatrix3 gegl_matrix;
src_buffer = gimp_pickable_get_buffer (src_pickable);
src_format_alpha = gimp_pickable_get_format_with_alpha (src_pickable);
/* Destination coordinates that will be painted */
x1d = paint_buffer_x;
y1d = paint_buffer_y;
x2d = paint_buffer_x + gegl_buffer_get_width (paint_buffer);
y2d = paint_buffer_y + gegl_buffer_get_height (paint_buffer);
/* Boundary box for source pixels to copy: Convert all the vertex of
* the box to paint in destination area to its correspondent in
* source area bearing in mind perspective
*/
gimp_perspective_clone_get_source_point (clone, x1d, y1d, &x1s, &y1s);
gimp_perspective_clone_get_source_point (clone, x1d, y2d, &x2s, &y2s);
gimp_perspective_clone_get_source_point (clone, x2d, y1d, &x3s, &y3s);
gimp_perspective_clone_get_source_point (clone, x2d, y2d, &x4s, &y4s);
xmin = floor (MIN4 (x1s, x2s, x3s, x4s));
ymin = floor (MIN4 (y1s, y2s, y3s, y4s));
xmax = ceil (MAX4 (x1s, x2s, x3s, x4s));
ymax = ceil (MAX4 (y1s, y2s, y3s, y4s));
switch (clone_options->clone_type)
{
case GIMP_IMAGE_CLONE:
if (! gimp_rectangle_intersect (xmin, ymin,
xmax - xmin, ymax - ymin,
0, 0,
gegl_buffer_get_width (src_buffer),
gegl_buffer_get_height (src_buffer),
NULL, NULL, NULL, NULL))
{
/* if the source area is completely out of the image */
return NULL;
}
break;
case GIMP_PATTERN_CLONE:
gegl_node_set (clone->crop,
"x", (gdouble) xmin,
"y", (gdouble) ymin,
"width", (gdouble) xmax - xmin,
"height", (gdouble) ymax - ymin,
NULL);
break;
}
dest_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0, x2d - x1d, y2d - y1d),
src_format_alpha);
gimp_perspective_clone_get_matrix (clone, &matrix);
gimp_matrix3_identity (&gegl_matrix);
gimp_matrix3_mult (&matrix, &gegl_matrix);
gimp_matrix3_translate (&gegl_matrix, -x1d, -y1d);
gimp_gegl_node_set_matrix (clone->transform_node, &gegl_matrix);
gegl_node_set (clone->dest_node,
"buffer", dest_buffer,
NULL);
gegl_node_blit (clone->dest_node, 1.0,
GEGL_RECTANGLE (0, 0, x2d - x1d, y2d - y1d),
NULL, NULL, 0, GEGL_BLIT_DEFAULT);
*src_rect = *GEGL_RECTANGLE (0, 0, x2d - x1d, y2d - y1d);
return dest_buffer;
}
static GeglBuffer *
gimp_source_core_real_get_source (GimpSourceCore *source_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpPickable *src_pickable,
gint src_offset_x,
gint src_offset_y,
GeglBuffer *paint_buffer,
gint paint_buffer_x,
gint paint_buffer_y,
gint *paint_area_offset_x,
gint *paint_area_offset_y,
gint *paint_area_width,
gint *paint_area_height,
GeglRectangle *src_rect)
{
GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
GimpImage *image = gimp_item_get_image (GIMP_ITEM (drawable));
GimpImage *src_image = gimp_pickable_get_image (src_pickable);
GeglBuffer *src_buffer = gimp_pickable_get_buffer (src_pickable);
GeglBuffer *dest_buffer;
gint x, y;
gint width, height;
if (! gimp_rectangle_intersect (paint_buffer_x + src_offset_x,
paint_buffer_y + src_offset_y,
gegl_buffer_get_width (paint_buffer),
gegl_buffer_get_height (paint_buffer),
0, 0,
gegl_buffer_get_width (src_buffer),
gegl_buffer_get_height (src_buffer),
&x, &y,
&width, &height))
{
return FALSE;
}
/* If the source image is different from the destination,
* then we should copy straight from the source image
* to the canvas.
* Otherwise, we need a call to get_orig_image to make sure
* we get a copy of the unblemished (offset) image
*/
if (( options->sample_merged && (src_image != image)) ||
(! options->sample_merged && (source_core->src_drawable != drawable)))
{
dest_buffer = src_buffer;
}
else
{
/* get the original image */
if (options->sample_merged)
dest_buffer = gimp_paint_core_get_orig_proj (GIMP_PAINT_CORE (source_core));
else
dest_buffer = gimp_paint_core_get_orig_image (GIMP_PAINT_CORE (source_core));
}
*paint_area_offset_x = x - (paint_buffer_x + src_offset_x);
*paint_area_offset_y = y - (paint_buffer_y + src_offset_y);
*paint_area_width = width;
*paint_area_height = height;
*src_rect = *GEGL_RECTANGLE (x, y, width, height);
return g_object_ref (dest_buffer);
}
/**
* gimp_drawable_get_bucket_fill_buffer:
* @drawable: the #GimpDrawable to edit.
* @options:
* @fill_transparent:
* @fill_criterion:
* @threshold:
* @sample_merged:
* @diagonal_neighbors:
* @seed_x: X coordinate to start the fill.
* @seed_y: Y coordinate to start the fill.
* @mask_buffer: mask of the fill in-progress when in an interactive
* filling process. Set to NULL if you need a one-time
* fill.
* @mask_x: returned x bound of @mask_buffer.
* @mask_y: returned x bound of @mask_buffer.
* @mask_width: returned width bound of @mask_buffer.
* @mask_height: returned height bound of @mask_buffer.
*
* Creates the fill buffer for a bucket fill operation on @drawable,
* without actually applying it (if you want to apply it directly as a
* one-time operation, use gimp_drawable_bucket_fill() instead). If
* @mask_buffer is not NULL, the intermediate fill mask will also be
* returned. This fill mask can later be reused in successive calls to
* gimp_drawable_get_bucket_fill_buffer() for interactive filling.
*
* Returns: a fill buffer which can be directly applied to @drawable, or
* used in a drawable filter as preview.
*/
GeglBuffer *
gimp_drawable_get_bucket_fill_buffer (GimpDrawable *drawable,
GimpFillOptions *options,
gboolean fill_transparent,
GimpSelectCriterion fill_criterion,
gdouble threshold,
gboolean sample_merged,
gboolean diagonal_neighbors,
gdouble seed_x,
gdouble seed_y,
GeglBuffer **mask_buffer,
gdouble *mask_x,
gdouble *mask_y,
gint *mask_width,
gint *mask_height)
{
GimpImage *image;
GimpPickable *pickable;
GeglBuffer *buffer;
GeglBuffer *new_mask;
gboolean antialias;
gint x, y, width, height;
gint mask_offset_x = 0;
gint mask_offset_y = 0;
gint sel_x, sel_y, sel_width, sel_height;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
g_return_val_if_fail (GIMP_IS_FILL_OPTIONS (options), NULL);
image = gimp_item_get_image (GIMP_ITEM (drawable));
if (! gimp_item_mask_intersect (GIMP_ITEM (drawable),
&sel_x, &sel_y, &sel_width, &sel_height))
return NULL;
if (mask_buffer && *mask_buffer && threshold == 0.0)
{
gfloat pixel;
gegl_buffer_sample (*mask_buffer, seed_x, seed_y, NULL, &pixel,
babl_format ("Y float"),
GEGL_SAMPLER_NEAREST, GEGL_ABYSS_NONE);
if (pixel != 0.0)
/* Already selected. This seed won't change the selection. */
return NULL;
}
gimp_set_busy (image->gimp);
if (sample_merged)
pickable = GIMP_PICKABLE (image);
else
pickable = GIMP_PICKABLE (drawable);
antialias = gimp_fill_options_get_antialias (options);
/* Do a seed bucket fill...To do this, calculate a new
* contiguous region.
*/
new_mask = gimp_pickable_contiguous_region_by_seed (pickable,
antialias,
threshold,
fill_transparent,
fill_criterion,
diagonal_neighbors,
(gint) seed_x,
(gint) seed_y);
if (mask_buffer && *mask_buffer)
{
gimp_gegl_mask_combine_buffer (new_mask, *mask_buffer,
GIMP_CHANNEL_OP_ADD, 0, 0);
g_object_unref (*mask_buffer);
}
if (mask_buffer)
*mask_buffer = new_mask;
gimp_gegl_mask_bounds (new_mask, &x, &y, &width, &height);
width -= x;
height -= y;
/* If there is a selection, intersect the region bounds
* with the selection bounds, to avoid processing areas
* that are going to be masked out anyway. The actual
* intersection of the fill region with the mask data
* happens when combining the fill buffer, in
* gimp_drawable_apply_buffer().
*/
if (! gimp_channel_is_empty (gimp_image_get_mask (image)))
{
gint off_x = 0;
gint off_y = 0;
if (sample_merged)
gimp_item_get_offset (GIMP_ITEM (drawable), &off_x, &off_y);
if (! gimp_rectangle_intersect (x, y, width, height,
sel_x + off_x, sel_y + off_y,
sel_width, sel_height,
&x, &y, &width, &height))
{
if (! mask_buffer)
g_object_unref (new_mask);
/* The fill region and the selection are disjoint; bail. */
gimp_unset_busy (image->gimp);
return NULL;
}
}
/* make sure we handle the mask correctly if it was sample-merged */
if (sample_merged)
{
GimpItem *item = GIMP_ITEM (drawable);
gint off_x, off_y;
/* Limit the channel bounds to the drawable's extents */
gimp_item_get_offset (item, &off_x, &off_y);
gimp_rectangle_intersect (x, y, width, height,
off_x, off_y,
gimp_item_get_width (item),
gimp_item_get_height (item),
&x, &y, &width, &height);
mask_offset_x = x;
mask_offset_y = y;
/* translate mask bounds to drawable coords */
x -= off_x;
y -= off_y;
}
else
{
mask_offset_x = x;
mask_offset_y = y;
}
buffer = gimp_fill_options_create_buffer (options, drawable,
GEGL_RECTANGLE (0, 0,
width, height),
-x, -y);
gimp_gegl_apply_opacity (buffer, NULL, NULL, buffer, new_mask,
-mask_offset_x, -mask_offset_y, 1.0);
if (mask_x)
*mask_x = x;
if (mask_y)
*mask_y = y;
if (mask_width)
*mask_width = width;
if (mask_height)
*mask_height = height;
if (! mask_buffer)
g_object_unref (new_mask);
gimp_unset_busy (image->gimp);
return buffer;
}
GeglBuffer *
gimp_drawable_transform_buffer_flip (GimpDrawable *drawable,
GimpContext *context,
GeglBuffer *orig_buffer,
gint orig_offset_x,
gint orig_offset_y,
GimpOrientationType flip_type,
gdouble axis,
gboolean clip_result,
GimpColorProfile **buffer_profile,
gint *new_offset_x,
gint *new_offset_y)
{
const Babl *format;
GeglBuffer *new_buffer;
GeglBufferIterator *iter;
GeglRectangle src_rect;
GeglRectangle dest_rect;
gint bpp;
gint orig_x, orig_y;
gint orig_width, orig_height;
gint new_x, new_y;
gint new_width, new_height;
gint x, y;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
g_return_val_if_fail (GEGL_IS_BUFFER (orig_buffer), NULL);
g_return_val_if_fail (buffer_profile != NULL, NULL);
g_return_val_if_fail (new_offset_x != NULL, NULL);
g_return_val_if_fail (new_offset_y != NULL, NULL);
*buffer_profile =
gimp_color_managed_get_color_profile (GIMP_COLOR_MANAGED (drawable));
orig_x = orig_offset_x;
orig_y = orig_offset_y;
orig_width = gegl_buffer_get_width (orig_buffer);
orig_height = gegl_buffer_get_height (orig_buffer);
new_x = orig_x;
new_y = orig_y;
new_width = orig_width;
new_height = orig_height;
switch (flip_type)
{
case GIMP_ORIENTATION_HORIZONTAL:
new_x = RINT (-((gdouble) orig_x +
(gdouble) orig_width - axis) + axis);
break;
case GIMP_ORIENTATION_VERTICAL:
new_y = RINT (-((gdouble) orig_y +
(gdouble) orig_height - axis) + axis);
break;
case GIMP_ORIENTATION_UNKNOWN:
g_return_val_if_reached (NULL);
break;
}
format = gegl_buffer_get_format (orig_buffer);
bpp = babl_format_get_bytes_per_pixel (format);
new_buffer = gegl_buffer_new (GEGL_RECTANGLE (0, 0,
new_width, new_height),
format);
if (clip_result && (new_x != orig_x || new_y != orig_y))
{
GimpRGB bg;
GeglColor *color;
gint clip_x, clip_y;
gint clip_width, clip_height;
*new_offset_x = orig_x;
*new_offset_y = orig_y;
/* Use transparency, rather than the bg color, as the "outside" color of
* channels, and drawables with an alpha channel.
*/
if (GIMP_IS_CHANNEL (drawable) || babl_format_has_alpha (format))
{
gimp_rgba_set (&bg, 0.0, 0.0, 0.0, 0.0);
}
else
{
gimp_context_get_background (context, &bg);
gimp_pickable_srgb_to_image_color (GIMP_PICKABLE (drawable),
&bg, &bg);
}
color = gimp_gegl_color_new (&bg, gimp_drawable_get_space (drawable));
gegl_buffer_set_color (new_buffer, NULL, color);
g_object_unref (color);
if (gimp_rectangle_intersect (orig_x, orig_y, orig_width, orig_height,
new_x, new_y, new_width, new_height,
&clip_x, &clip_y,
&clip_width, &clip_height))
{
orig_x = new_x = clip_x - orig_x;
orig_y = new_y = clip_y - orig_y;
}
orig_width = new_width = clip_width;
orig_height = new_height = clip_height;
}
else
{
*new_offset_x = new_x;
*new_offset_y = new_y;
orig_x = 0;
orig_y = 0;
new_x = 0;
new_y = 0;
}
if (new_width == 0 && new_height == 0)
return new_buffer;
dest_rect.x = new_x;
dest_rect.y = new_y;
dest_rect.width = new_width;
dest_rect.height = new_height;
iter = gegl_buffer_iterator_new (new_buffer, &dest_rect, 0, NULL,
GEGL_BUFFER_WRITE, GEGL_ABYSS_NONE, 1);
switch (flip_type)
{
case GIMP_ORIENTATION_HORIZONTAL:
while (gegl_buffer_iterator_next (iter))
{
gint stride = iter->items[0].roi.width * bpp;
src_rect = iter->items[0].roi;
src_rect.x = (orig_x + orig_width) -
(iter->items[0].roi.x - dest_rect.x) -
iter->items[0].roi.width;
gegl_buffer_get (orig_buffer, &src_rect, 1.0, NULL, iter->items[0].data,
stride, GEGL_ABYSS_NONE);
for (y = 0; y < iter->items[0].roi.height; y++)
{
guint8 *left = iter->items[0].data;
guint8 *right = iter->items[0].data;
left += y * stride;
right += y * stride + (iter->items[0].roi.width - 1) * bpp;
for (x = 0; x < iter->items[0].roi.width / 2; x++)
{
guint8 temp[bpp];
memcpy (temp, left, bpp);
memcpy (left, right, bpp);
memcpy (right, temp, bpp);
left += bpp;
right -= bpp;
}
}
}
break;
case GIMP_ORIENTATION_VERTICAL:
while (gegl_buffer_iterator_next (iter))
{
gint stride = iter->items[0].roi.width * bpp;
src_rect = iter->items[0].roi;
src_rect.y = (orig_y + orig_height) -
(iter->items[0].roi.y - dest_rect.y) -
iter->items[0].roi.height;
gegl_buffer_get (orig_buffer, &src_rect, 1.0, NULL, iter->items[0].data,
stride, GEGL_ABYSS_NONE);
for (x = 0; x < iter->items[0].roi.width; x++)
{
guint8 *top = iter->items[0].data;
guint8 *bottom = iter->items[0].data;
top += x * bpp;
bottom += x * bpp + (iter->items[0].roi.height - 1) * stride;
for (y = 0; y < iter->items[0].roi.height / 2; y++)
{
guint8 temp[bpp];
memcpy (temp, top, bpp);
memcpy (top, bottom, bpp);
memcpy (bottom, temp, bpp);
top += stride;
bottom -= stride;
}
}
}
break;
case GIMP_ORIENTATION_UNKNOWN:
gegl_buffer_iterator_stop (iter);
break;
}
return new_buffer;
}
/**
* gimp_scan_convert_render_full:
* @sc: a #GimpScanConvert context
* @buffer: the #GeglBuffer to render to
* @off_x: horizontal offset into the @buffer
* @off_y: vertical offset into the @buffer
* @replace: if true the original content of the @buffer gets estroyed
* @antialias: if true the rendering happens antialiased
* @value: value to use for covered pixels
*
* This function renders the area described by the path to the
* @buffer, taking the offset @off_x and @off_y in the buffer into
* account. The rendering can happen antialiased and be rendered on
* top of existing content or replacing it completely. The @value
* specifies the opacity value to be used for the objects in the @sc.
*
* You cannot add additional polygons after this command.
*/
void
gimp_scan_convert_render_full (GimpScanConvert *sc,
GeglBuffer *buffer,
gint off_x,
gint off_y,
gboolean replace,
gboolean antialias,
gdouble value)
{
const Babl *format;
GeglBufferIterator *iter;
GeglRectangle *roi;
cairo_t *cr;
cairo_surface_t *surface;
cairo_path_t path;
gint bpp;
gint x, y;
gint width, height;
g_return_if_fail (sc != NULL);
g_return_if_fail (GEGL_IS_BUFFER (buffer));
x = 0;
y = 0;
width = gegl_buffer_get_width (buffer);
height = gegl_buffer_get_height (buffer);
if (sc->clip && ! gimp_rectangle_intersect (x, y, width, height,
sc->clip_x, sc->clip_y,
sc->clip_w, sc->clip_h,
&x, &y, &width, &height))
return;
path.status = CAIRO_STATUS_SUCCESS;
path.data = (cairo_path_data_t *) sc->path_data->data;
path.num_data = sc->path_data->len;
format = babl_format ("Y u8");
bpp = babl_format_get_bytes_per_pixel (format);
iter = gegl_buffer_iterator_new (buffer, NULL, 0, format,
GEGL_BUFFER_READWRITE, GEGL_ABYSS_NONE);
roi = &iter->roi[0];
while (gegl_buffer_iterator_next (iter))
{
guchar *data = iter->data[0];
guchar *tmp_buf = NULL;
const gint stride = cairo_format_stride_for_width (CAIRO_FORMAT_A8,
roi->width);
/* cairo rowstrides are always multiples of 4, whereas
* maskPR.rowstride can be anything, so to be able to create an
* image surface, we maybe have to create our own temporary
* buffer
*/
if (roi->width * bpp != stride)
{
tmp_buf = g_alloca (stride * roi->height);
if (! replace)
{
const guchar *src = data;
guchar *dest = tmp_buf;
gint i;
for (i = 0; i < roi->height; i++)
{
memcpy (dest, src, roi->width * bpp);
src += roi->width * bpp;
dest += stride;
}
}
}
surface = cairo_image_surface_create_for_data (tmp_buf ?
tmp_buf : data,
CAIRO_FORMAT_A8,
roi->width, roi->height,
stride);
cairo_surface_set_device_offset (surface,
-off_x - roi->x,
-off_y - roi->y);
cr = cairo_create (surface);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
if (replace)
{
cairo_set_source_rgba (cr, 0, 0, 0, 0);
cairo_paint (cr);
}
cairo_set_source_rgba (cr, 0, 0, 0, value);
cairo_append_path (cr, &path);
cairo_set_antialias (cr, antialias ?
CAIRO_ANTIALIAS_GRAY : CAIRO_ANTIALIAS_NONE);
cairo_set_miter_limit (cr, sc->miter);
if (sc->do_stroke)
{
cairo_set_line_cap (cr,
sc->cap == GIMP_CAP_BUTT ? CAIRO_LINE_CAP_BUTT :
sc->cap == GIMP_CAP_ROUND ? CAIRO_LINE_CAP_ROUND :
CAIRO_LINE_CAP_SQUARE);
cairo_set_line_join (cr,
sc->join == GIMP_JOIN_MITER ? CAIRO_LINE_JOIN_MITER :
sc->join == GIMP_JOIN_ROUND ? CAIRO_LINE_JOIN_ROUND :
CAIRO_LINE_JOIN_BEVEL);
cairo_set_line_width (cr, sc->width);
if (sc->dash_info)
cairo_set_dash (cr,
(double *) sc->dash_info->data,
sc->dash_info->len,
sc->dash_offset);
cairo_scale (cr, 1.0, sc->ratio_xy);
cairo_stroke (cr);
}
else
{
cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
cairo_fill (cr);
}
cairo_destroy (cr);
cairo_surface_destroy (surface);
if (tmp_buf)
{
const guchar *src = tmp_buf;
guchar *dest = data;
gint i;
for (i = 0; i < roi->height; i++)
{
memcpy (dest, src, roi->width * bpp);
src += stride;
dest += roi->width * bpp;
}
}
}
}