gint
gimp_buffer_get_bytes (const GimpBuffer *buffer)
{
g_return_val_if_fail (GIMP_IS_BUFFER (buffer), 0);
return tile_manager_bpp (buffer->tiles);
}
static TempBuf *
tile_manager_create_preview (TileManager *tiles,
gint src_x,
gint src_y,
gint src_width,
gint src_height,
gint dest_width,
gint dest_height)
{
TempBuf *preview;
PixelRegion srcPR;
PixelRegion destPR;
gint subsample = 1;
preview = temp_buf_new (dest_width, dest_height,
tile_manager_bpp (tiles), 0, 0, NULL);
pixel_region_init (&srcPR, tiles, src_x, src_y, src_width, src_height, FALSE);
pixel_region_init_temp_buf (&destPR, preview, 0, 0, dest_width, dest_height);
/* calculate 'acceptable' subsample */
while ((dest_width * (subsample + 1) * 2 < src_width) &&
(dest_height * (subsample + 1) * 2 < src_height))
subsample += 1;
subsample_region (&srcPR, &destPR, subsample);
return preview;
}
GimpTempBuf *
tile_manager_get_sub_preview (TileManager *tiles,
const Babl *format,
gint src_x,
gint src_y,
gint src_width,
gint src_height,
gint dest_width,
gint dest_height)
{
g_return_val_if_fail (tiles != NULL, NULL);
g_return_val_if_fail (format != NULL, NULL);
g_return_val_if_fail (babl_format_get_bytes_per_pixel (format) ==
tile_manager_bpp (tiles), NULL);
g_return_val_if_fail (src_x >= 0 &&
src_x < tile_manager_width (tiles), NULL);
g_return_val_if_fail (src_y >= 0 &&
src_y < tile_manager_height (tiles), NULL);
g_return_val_if_fail (src_width > 0 &&
src_x + src_width <= tile_manager_width (tiles), NULL);
g_return_val_if_fail (src_height > 0 &&
src_y + src_height <= tile_manager_height (tiles),
NULL);
g_return_val_if_fail (dest_width > 0 && dest_height > 0, NULL);
return tile_manager_create_preview (tiles, format,
src_x, src_y, src_width, src_height,
dest_width, dest_height);
}
static gboolean
gimp_operation_tile_source_process (GeglOperation *operation,
GeglBuffer *output,
const GeglRectangle *result)
{
GimpOperationTileSource *self = GIMP_OPERATION_TILE_SOURCE (operation);
const Babl *format;
PixelRegion srcPR;
gpointer pr;
if (! self->tile_manager)
return FALSE;
format = gimp_bpp_to_babl_format (tile_manager_bpp (self->tile_manager),
self->linear);
pixel_region_init (&srcPR, self->tile_manager,
result->x, result->y,
result->width, result->height,
FALSE);
for (pr = pixel_regions_register (1, &srcPR);
pr;
pr = pixel_regions_process (pr))
{
GeglRectangle rect = { srcPR.x, srcPR.y, srcPR.w, srcPR.h };
gegl_buffer_set (output, &rect, format, srcPR.data, srcPR.rowstride);
}
return TRUE;
}
GimpImageType
gimp_buffer_get_image_type (const GimpBuffer *buffer)
{
g_return_val_if_fail (GIMP_IS_BUFFER (buffer), 0);
switch (tile_manager_bpp (buffer->tiles))
{
case 1: return GIMP_GRAY_IMAGE;
case 2: return GIMP_GRAYA_IMAGE;
case 3: return GIMP_RGB_IMAGE;
case 4: return GIMP_RGBA_IMAGE;
}
return 0;
}
static void
gimp_operation_tile_source_prepare (GeglOperation *operation)
{
GimpOperationTileSource *self = GIMP_OPERATION_TILE_SOURCE (operation);
if (self->tile_manager)
{
const Babl *format;
guint bpp = tile_manager_bpp (self->tile_manager);
if (self->linear)
format = gimp_bpp_to_babl_format_linear (bpp);
else
format = gimp_bpp_to_babl_format (bpp);
gegl_operation_set_format (operation, "output", format);
}
}
GimpTempBuf *
tile_manager_get_preview (TileManager *tiles,
const Babl *format,
gint width,
gint height)
{
g_return_val_if_fail (tiles != NULL, NULL);
g_return_val_if_fail (format != NULL, NULL);
g_return_val_if_fail (babl_format_get_bytes_per_pixel (format) ==
tile_manager_bpp (tiles), NULL);
g_return_val_if_fail (width > 0 && height > 0, NULL);
return tile_manager_create_preview (tiles, format,
0, 0,
tile_manager_width (tiles),
tile_manager_height (tiles),
width, height);
}
GimpBuffer *
gimp_buffer_new (TileManager *tiles,
const gchar *name,
gboolean copy_pixels)
{
GimpBuffer *buffer;
gint width, height;
g_return_val_if_fail (tiles != NULL, NULL);
g_return_val_if_fail (name != NULL, NULL);
width = tile_manager_width (tiles);
height = tile_manager_height (tiles);
buffer = g_object_new (GIMP_TYPE_BUFFER,
"name", name,
NULL);
if (copy_pixels)
{
PixelRegion srcPR, destPR;
buffer->tiles = tile_manager_new (width, height,
tile_manager_bpp (tiles));
pixel_region_init (&srcPR, tiles, 0, 0, width, height, FALSE);
pixel_region_init (&destPR, buffer->tiles, 0, 0, width, height, TRUE);
copy_region (&srcPR, &destPR);
}
else
{
buffer->tiles = tiles;
}
return buffer;
}
gboolean
gimp_paint_core_start (GimpPaintCore *core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
const GimpCoords *coords,
GError **error)
{
GimpItem *item;
g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), FALSE);
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), FALSE);
g_return_val_if_fail (gimp_item_is_attached (GIMP_ITEM (drawable)), FALSE);
g_return_val_if_fail (GIMP_IS_PAINT_OPTIONS (paint_options), FALSE);
g_return_val_if_fail (coords != NULL, FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
item = GIMP_ITEM (drawable);
if (core->stroke_buffer)
{
g_array_free (core->stroke_buffer, TRUE);
core->stroke_buffer = NULL;
}
core->stroke_buffer = g_array_sized_new (TRUE, TRUE,
sizeof (GimpCoords),
STROKE_BUFFER_INIT_SIZE);
core->cur_coords = *coords;
if (! GIMP_PAINT_CORE_GET_CLASS (core)->start (core, drawable,
paint_options,
coords, error))
{
return FALSE;
}
/* Allocate the undo structure */
if (core->undo_tiles)
tile_manager_unref (core->undo_tiles);
core->undo_tiles = tile_manager_new (gimp_item_get_width (item),
gimp_item_get_height (item),
gimp_drawable_bytes (drawable));
/* Allocate the saved proj structure */
if (core->saved_proj_tiles)
tile_manager_unref (core->saved_proj_tiles);
core->saved_proj_tiles = NULL;
if (core->use_saved_proj)
{
GimpImage *image = gimp_item_get_image (item);
GimpPickable *pickable = GIMP_PICKABLE (gimp_image_get_projection (image));
TileManager *tiles = gimp_pickable_get_tiles (pickable);
core->saved_proj_tiles = tile_manager_new (tile_manager_width (tiles),
tile_manager_height (tiles),
tile_manager_bpp (tiles));
}
/* Allocate the canvas blocks structure */
if (core->canvas_tiles)
tile_manager_unref (core->canvas_tiles);
core->canvas_tiles = tile_manager_new (gimp_item_get_width (item),
gimp_item_get_height (item),
1);
/* Get the initial undo extents */
core->x1 = core->x2 = core->cur_coords.x;
core->y1 = core->y2 = core->cur_coords.y;
core->last_paint.x = -1e6;
core->last_paint.y = -1e6;
/* Freeze the drawable preview so that it isn't constantly updated. */
gimp_viewable_preview_freeze (GIMP_VIEWABLE (drawable));
return TRUE;
}
void
floating_sel_store (GimpLayer *layer,
gint x,
gint y,
gint w,
gint h)
{
PixelRegion srcPR, destPR;
gint offx, offy;
gint x1, y1, x2, y2;
g_return_if_fail (GIMP_IS_LAYER (layer));
g_return_if_fail (gimp_layer_is_floating_sel (layer));
/* Check the backing store & make sure it has the correct dimensions */
if ((tile_manager_width (layer->fs.backing_store) !=
gimp_item_width (GIMP_ITEM(layer))) ||
(tile_manager_height (layer->fs.backing_store) !=
gimp_item_height (GIMP_ITEM(layer))) ||
(tile_manager_bpp (layer->fs.backing_store) !=
gimp_drawable_bytes (layer->fs.drawable)))
{
/* free the backing store and allocate anew */
tile_manager_unref (layer->fs.backing_store);
layer->fs.backing_store =
tile_manager_new (GIMP_ITEM (layer)->width,
GIMP_ITEM (layer)->height,
gimp_drawable_bytes (layer->fs.drawable));
}
/* What this function does is save the specified area of the
* drawable that this floating selection obscures. We do this so
* that it will be possible to subsequently restore the drawable's area
*/
gimp_item_offsets (GIMP_ITEM (layer->fs.drawable), &offx, &offy);
/* Find the minimum area we need to uncover -- in image space */
x1 = MAX (GIMP_ITEM (layer)->offset_x, offx);
y1 = MAX (GIMP_ITEM (layer)->offset_y, offy);
x2 = MIN (GIMP_ITEM (layer)->offset_x + GIMP_ITEM (layer)->width,
offx + gimp_item_width (GIMP_ITEM (layer->fs.drawable)));
y2 = MIN (GIMP_ITEM (layer)->offset_y + GIMP_ITEM (layer)->height,
offy + gimp_item_height (GIMP_ITEM (layer->fs.drawable)));
x1 = CLAMP (x, x1, x2);
y1 = CLAMP (y, y1, y2);
x2 = CLAMP (x + w, x1, x2);
y2 = CLAMP (y + h, y1, y2);
if ((x2 - x1) > 0 && (y2 - y1) > 0)
{
/* Copy the area from the drawable to the backing store */
pixel_region_init (&srcPR, gimp_drawable_get_tiles (layer->fs.drawable),
(x1 - offx), (y1 - offy), (x2 - x1), (y2 - y1), FALSE);
pixel_region_init (&destPR, layer->fs.backing_store,
(x1 - GIMP_ITEM (layer)->offset_x),
(y1 - GIMP_ITEM (layer)->offset_y),
(x2 - x1), (y2 - y1), TRUE);
copy_region (&srcPR, &destPR);
}
}
static gboolean
gimp_perspective_clone_get_source (GimpSourceCore *source_core,
GimpDrawable *drawable,
GimpPaintOptions *paint_options,
GimpPickable *src_pickable,
gint src_offset_x,
gint src_offset_y,
TempBuf *paint_area,
gint *paint_area_offset_x,
gint *paint_area_offset_y,
gint *paint_area_width,
gint *paint_area_height,
PixelRegion *srcPR)
{
GimpPerspectiveClone *clone = GIMP_PERSPECTIVE_CLONE (source_core);
GimpPaintCore *paint_core = GIMP_PAINT_CORE (source_core);
GimpSourceOptions *options = GIMP_SOURCE_OPTIONS (paint_options);
GimpImage *src_image;
GimpImage *image;
GimpImageType src_type;
gint x1d, y1d, x2d, y2d;
gdouble x1s, y1s, x2s, y2s, x3s, y3s, x4s, y4s;
gint xmin, ymin, xmax, ymax;
TileManager *src_tiles;
TileManager *orig_tiles;
PixelRegion origPR;
PixelRegion destPR;
GimpMatrix3 matrix;
gint bytes;
src_image = gimp_pickable_get_image (src_pickable);
image = gimp_item_get_image (GIMP_ITEM (drawable));
src_type = gimp_pickable_get_image_type (src_pickable);
src_tiles = gimp_pickable_get_tiles (src_pickable);
/* Destination coordinates that will be painted */
x1d = paint_area->x;
y1d = paint_area->y;
x2d = paint_area->x + paint_area->width;
y2d = paint_area->y + paint_area->height;
/* 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));
xmin = CLAMP (xmin - 1, 0, tile_manager_width (src_tiles));
ymin = CLAMP (ymin - 1, 0, tile_manager_height (src_tiles));
xmax = CLAMP (xmax + 1, 0, tile_manager_width (src_tiles));
ymax = CLAMP (ymax + 1, 0, tile_manager_height (src_tiles));
/* if the source area is completely out of the image */
if (!(xmax - xmin) || !(ymax - ymin))
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)))
{
pixel_region_init (&origPR, src_tiles,
xmin, ymin, xmax - xmin, ymax - ymin, FALSE);
}
else
{
TempBuf *orig;
/* get the original image */
if (options->sample_merged)
orig = gimp_paint_core_get_orig_proj (paint_core,
src_pickable,
xmin, ymin, xmax, ymax);
else
orig = gimp_paint_core_get_orig_image (paint_core,
GIMP_DRAWABLE (src_pickable),
xmin, ymin, xmax, ymax);
pixel_region_init_temp_buf (&origPR, orig,
0, 0, xmax - xmin, ymax - ymin);
}
/* copy the original image to a tile manager, adding alpha if needed */
bytes = GIMP_IMAGE_TYPE_BYTES (GIMP_IMAGE_TYPE_WITH_ALPHA (src_type));
orig_tiles = tile_manager_new (xmax - xmin, ymax - ymin, bytes);
tile_manager_set_offsets (orig_tiles, xmin, ymin);
pixel_region_init (&destPR, orig_tiles,
0, 0, xmax - xmin, ymax - ymin,
TRUE);
if (bytes > origPR.bytes)
add_alpha_region (&origPR, &destPR);
else
copy_region (&origPR, &destPR);
clone->src_area = temp_buf_resize (clone->src_area,
tile_manager_bpp (orig_tiles),
0, 0,
x2d - x1d, y2d - y1d);
pixel_region_init_temp_buf (&destPR, clone->src_area,
0, 0,
x2d - x1d, y2d - y1d);
gimp_perspective_clone_get_matrix (clone, &matrix);
gimp_transform_region (src_pickable,
GIMP_CONTEXT (paint_options),
orig_tiles,
&destPR,
x1d, y1d, x2d, y2d,
&matrix,
GIMP_INTERPOLATION_LINEAR, 0, NULL);
tile_manager_unref (orig_tiles);
pixel_region_init_temp_buf (srcPR, clone->src_area,
0, 0, x2d - x1d, y2d - y1d);
return TRUE;
}