static void
gimp_layer_prop_undo_constructed (GObject *object)
{
GimpLayerPropUndo *layer_prop_undo = GIMP_LAYER_PROP_UNDO (object);
GimpLayer *layer;
G_OBJECT_CLASS (parent_class)->constructed (object);
g_assert (GIMP_IS_LAYER (GIMP_ITEM_UNDO (object)->item));
layer = GIMP_LAYER (GIMP_ITEM_UNDO (object)->item);
switch (GIMP_UNDO (object)->undo_type)
{
case GIMP_UNDO_LAYER_MODE:
layer_prop_undo->mode = gimp_layer_get_mode (layer);
break;
case GIMP_UNDO_LAYER_OPACITY:
layer_prop_undo->opacity = gimp_layer_get_opacity (layer);
break;
case GIMP_UNDO_LAYER_LOCK_ALPHA:
layer_prop_undo->lock_alpha = gimp_layer_get_lock_alpha (layer);
break;
default:
g_assert_not_reached ();
}
}
static void
gimp_layer_prop_undo_pop (GimpUndo *undo,
GimpUndoMode undo_mode,
GimpUndoAccumulator *accum)
{
GimpLayerPropUndo *layer_prop_undo = GIMP_LAYER_PROP_UNDO (undo);
GimpLayer *layer = GIMP_LAYER (GIMP_ITEM_UNDO (undo)->item);
GIMP_UNDO_CLASS (parent_class)->pop (undo, undo_mode, accum);
switch (undo->undo_type)
{
case GIMP_UNDO_LAYER_REPOSITION:
{
gint position;
position = gimp_image_get_layer_index (undo->image, layer);
gimp_image_position_layer (undo->image, layer,
layer_prop_undo->position,
FALSE, NULL);
layer_prop_undo->position = position;
}
break;
case GIMP_UNDO_LAYER_MODE:
{
GimpLayerModeEffects mode;
mode = gimp_layer_get_mode (layer);
gimp_layer_set_mode (layer, layer_prop_undo->mode, FALSE);
layer_prop_undo->mode = mode;
}
break;
case GIMP_UNDO_LAYER_OPACITY:
{
gdouble opacity;
opacity = gimp_layer_get_opacity (layer);
gimp_layer_set_opacity (layer, layer_prop_undo->opacity, FALSE);
layer_prop_undo->opacity = opacity;
}
break;
case GIMP_UNDO_LAYER_LOCK_ALPHA:
{
gboolean lock_alpha;
lock_alpha = gimp_layer_get_lock_alpha (layer);
gimp_layer_set_lock_alpha (layer, layer_prop_undo->lock_alpha, FALSE);
layer_prop_undo->lock_alpha = lock_alpha;
}
break;
default:
g_assert_not_reached ();
}
}
/**
* gimp_projection_initialize:
* @proj: A #GimpProjection.
* @x:
* @y:
* @w:
* @h:
*
* This function determines whether a visible layer with combine mode
* Normal provides complete coverage over the specified area. If not,
* the projection is initialized to transparent black.
*/
static void
gimp_projection_initialize (GimpProjection *proj,
gint x,
gint y,
gint w,
gint h)
{
GList *list;
gint proj_off_x;
gint proj_off_y;
gboolean coverage = FALSE;
gimp_projectable_get_offset (proj->projectable, &proj_off_x, &proj_off_y);
for (list = gimp_projectable_get_layers (proj->projectable);
list;
list = g_list_next (list))
{
GimpLayer *layer = list->data;
GimpDrawable *drawable = GIMP_DRAWABLE (layer);
GimpItem *item = GIMP_ITEM (layer);
gint off_x, off_y;
gimp_item_get_offset (item, &off_x, &off_y);
/* subtract the projectable's offsets because the list of
* update areas is in tile-pyramid coordinates, but our
* external API is always in terms of image coordinates.
*/
off_x -= proj_off_x;
off_y -= proj_off_y;
if (gimp_item_get_visible (item) &&
! gimp_drawable_has_alpha (drawable) &&
! gimp_layer_get_mask (layer) &&
gimp_layer_get_mode (layer) == GIMP_NORMAL_MODE &&
gimp_layer_get_opacity (layer) == GIMP_OPACITY_OPAQUE &&
off_x <= x &&
off_y <= y &&
(off_x + gimp_item_get_width (item)) >= (x + w) &&
(off_y + gimp_item_get_height (item)) >= (y + h))
{
coverage = TRUE;
break;
}
}
if (! coverage)
{
PixelRegion region;
pixel_region_init (®ion,
gimp_pickable_get_tiles (GIMP_PICKABLE (proj)),
x, y, w, h, TRUE);
clear_region (®ion);
}
}
static GObject *
gimp_layer_prop_undo_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpLayerPropUndo *layer_prop_undo;
GimpImage *image;
GimpLayer *layer;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
layer_prop_undo = GIMP_LAYER_PROP_UNDO (object);
g_assert (GIMP_IS_LAYER (GIMP_ITEM_UNDO (object)->item));
image = GIMP_UNDO (object)->image;
layer = GIMP_LAYER (GIMP_ITEM_UNDO (object)->item);
switch (GIMP_UNDO (object)->undo_type)
{
case GIMP_UNDO_LAYER_REPOSITION:
layer_prop_undo->position = gimp_image_get_layer_index (image, layer);
break;
case GIMP_UNDO_LAYER_MODE:
layer_prop_undo->mode = gimp_layer_get_mode (layer);
break;
case GIMP_UNDO_LAYER_OPACITY:
layer_prop_undo->opacity = gimp_layer_get_opacity (layer);
break;
case GIMP_UNDO_LAYER_LOCK_ALPHA:
layer_prop_undo->lock_alpha = gimp_layer_get_lock_alpha (layer);
break;
default:
g_assert_not_reached ();
}
return object;
}
/**
* gimp_text_layer_from_layer:
* @layer: a #GimpLayer object
* @text: a #GimpText object
*
* Converts a standard #GimpLayer and a #GimpText object into a
* #GimpTextLayer. The new text layer takes ownership of the @text and
* @layer objects. The @layer object is rendered unusable by this
* function. Don't even try to use if afterwards!
*
* This is a gross hack that is needed in order to load text layers
* from XCF files in a backwards-compatible way. Please don't use it
* for anything else!
*
* Return value: a newly allocated #GimpTextLayer object
**/
static GimpLayer *
gimp_text_layer_from_layer (GimpLayer *layer,
GimpText *text)
{
GimpTextLayer *text_layer;
GimpDrawable *drawable;
g_return_val_if_fail (GIMP_IS_LAYER (layer), NULL);
g_return_val_if_fail (GIMP_IS_TEXT (text), NULL);
text_layer = g_object_new (GIMP_TYPE_TEXT_LAYER,
"image", gimp_item_get_image (GIMP_ITEM (layer)),
NULL);
gimp_item_replace_item (GIMP_ITEM (text_layer), GIMP_ITEM (layer));
drawable = GIMP_DRAWABLE (text_layer);
gimp_drawable_steal_buffer (drawable, GIMP_DRAWABLE (layer));
gimp_layer_set_opacity (GIMP_LAYER (text_layer),
gimp_layer_get_opacity (layer), FALSE);
gimp_layer_set_mode (GIMP_LAYER (text_layer),
gimp_layer_get_mode (layer), FALSE);
gimp_layer_set_blend_space (GIMP_LAYER (text_layer),
gimp_layer_get_blend_space (layer), FALSE);
gimp_layer_set_composite_space (GIMP_LAYER (text_layer),
gimp_layer_get_composite_space (layer), FALSE);
gimp_layer_set_composite_mode (GIMP_LAYER (text_layer),
gimp_layer_get_composite_mode (layer), FALSE);
gimp_layer_set_lock_alpha (GIMP_LAYER (text_layer),
gimp_layer_get_lock_alpha (layer), FALSE);
gimp_text_layer_set_text (text_layer, text);
g_object_unref (text);
g_object_unref (layer);
return GIMP_LAYER (text_layer);
}
static void
run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals)
{
static GimpParam values[1];
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
GimpRunMode run_mode;
/* Plug-in variables */
gboolean single_image;
gboolean defaults_proc;
/* Plug-In variables */
cairo_surface_t *pdf_file;
cairo_t *cr;
GimpExportCapabilities capabilities;
guint32 i = 0;
gint32 j = 0;
gdouble x_res, y_res;
gdouble x_scale, y_scale;
gint32 image_id;
gboolean exported;
GimpImageBaseType type;
gint32 temp;
gint *layers;
gint32 num_of_layers;
GimpDrawable *layer;
cairo_surface_t *layer_image;
gdouble opacity;
gint x, y;
GimpRGB layer_color;
gboolean single_color;
gint32 mask_id = -1;
GimpDrawable *mask = NULL;
cairo_surface_t *mask_image = NULL;
FILE *fp;
INIT_I18N ();
/* Setting mandatory output values */
*nreturn_vals = 1;
*return_vals = values;
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
/* Initializing all the settings */
multi_page.image_count = 0;
if (! init_vals (name, nparams, param, &single_image,
&defaults_proc, &run_mode))
{
values[0].data.d_status = GIMP_PDB_CALLING_ERROR;
return;
}
/* Starting the executions */
if (run_mode == GIMP_RUN_INTERACTIVE)
{
if (single_image)
{
if (! gui_single ())
{
values[0].data.d_status = GIMP_PDB_CANCEL;
return;
}
}
else if (! gui_multi ())
{
values[0].data.d_status = GIMP_PDB_CANCEL;
return;
}
if (file_name == NULL)
{
values[0].data.d_status = GIMP_PDB_CALLING_ERROR;
gimp_message (_("You must select a file to save!"));
return;
}
}
fp = g_fopen (file_name, "wb");
pdf_file = cairo_pdf_surface_create_for_stream (write_func, fp, 1, 1);
if (cairo_surface_status (pdf_file) != CAIRO_STATUS_SUCCESS)
{
char *str = g_strdup_printf
(_("An error occured while creating the PDF file:\n"
"%s\n"
"Make sure you entered a valid filename and that the selected location isn't read only!"),
cairo_status_to_string (cairo_surface_status (pdf_file)));
gimp_message (str);
g_free (str);
values[0].data.d_status = GIMP_PDB_EXECUTION_ERROR;
return;
}
cr = cairo_create (pdf_file);
capabilities = GIMP_EXPORT_CAN_HANDLE_RGB | GIMP_EXPORT_CAN_HANDLE_ALPHA |
GIMP_EXPORT_CAN_HANDLE_GRAY | GIMP_EXPORT_CAN_HANDLE_LAYERS |
GIMP_EXPORT_CAN_HANDLE_INDEXED;
if (optimize.apply_masks)
capabilities |= GIMP_EXPORT_CAN_HANDLE_LAYER_MASKS;
for (i = 0; i < multi_page.image_count; i++)
{
/* Save the state of the surface before any changes, so that settings
* from one page won't affect all the others */
cairo_save (cr);
image_id = multi_page.images[i];
/* We need the active layer in order to use gimp_image_export */
temp = gimp_image_get_active_drawable (image_id);
if (temp == -1)
exported = gimp_export_image (&image_id, &temp, NULL, capabilities) == GIMP_EXPORT_EXPORT;
else
exported = FALSE;
type = gimp_image_base_type (image_id);
gimp_image_get_resolution (image_id, &x_res, &y_res);
x_scale = 72.0 / x_res;
y_scale = 72.0 / y_res;
cairo_pdf_surface_set_size (pdf_file,
gimp_image_width (image_id) * x_scale,
gimp_image_height (image_id) * y_scale);
/* This way we set how many pixels are there in every inch.
* It's very important for PangoCairo */
cairo_surface_set_fallback_resolution (pdf_file, x_res, y_res);
/* PDF is usually 72 points per inch. If we have a different resolution,
* we will need this to fit our drawings */
cairo_scale (cr, x_scale, y_scale);
/* Now, we should loop over the layers of each image */
layers = gimp_image_get_layers (image_id, &num_of_layers);
for (j = 0; j < num_of_layers; j++)
{
layer = gimp_drawable_get (layers [num_of_layers-j-1]);
opacity = gimp_layer_get_opacity (layer->drawable_id)/100.0;
/* Gimp doesn't display indexed layers with opacity below 50%
* And if it's above 50%, it will be rounded to 100% */
if (type == GIMP_INDEXED)
{
if (opacity <= 0.5)
opacity = 0.0;
else
opacity = 1.0;
}
if (gimp_item_get_visible (layer->drawable_id)
&& (! optimize.ignore_hidden || (optimize.ignore_hidden && opacity > 0.0)))
{
mask_id = gimp_layer_get_mask (layer->drawable_id);
if (mask_id != -1)
{
mask = gimp_drawable_get (mask_id);
mask_image = get_drawable_image (mask);
}
gimp_drawable_offsets (layer->drawable_id, &x, &y);
/* For raster layers */
if (!gimp_item_is_text_layer (layer->drawable_id))
{
layer_color = get_layer_color (layer, &single_color);
cairo_rectangle (cr, x, y, layer->width, layer->height);
if (optimize.vectorize && single_color)
{
cairo_set_source_rgba (cr, layer_color.r, layer_color.g, layer_color.b, layer_color.a * opacity);
if (mask_id != -1)
cairo_mask_surface (cr, mask_image, x, y);
else
cairo_fill (cr);
}
else
{
cairo_clip (cr);
layer_image = get_drawable_image (layer);
cairo_set_source_surface (cr, layer_image, x, y);
cairo_push_group (cr);
cairo_paint_with_alpha (cr, opacity);
cairo_pop_group_to_source (cr);
if (mask_id != -1)
cairo_mask_surface (cr, mask_image, x, y);
else
cairo_paint (cr);
cairo_reset_clip (cr);
cairo_surface_destroy (layer_image);
}
}
/* For text layers */
else
{
drawText (layer, opacity, cr, x_res, y_res);
}
}
/* We are done with the layer - time to free some resources */
gimp_drawable_detach (layer);
if (mask_id != -1)
{
gimp_drawable_detach (mask);
cairo_surface_destroy (mask_image);
}
}
/* We are done with this image - Show it! */
cairo_show_page (cr);
cairo_restore (cr);
if (exported)
gimp_image_delete (image_id);
}
/* We are done with all the images - time to free the resources */
cairo_surface_destroy (pdf_file);
cairo_destroy (cr);
fclose (fp);
/* Finally done, let's save the parameters */
gimp_set_data (DATA_OPTIMIZE, &optimize, sizeof (optimize));
if (!single_image)
{
g_strlcpy (multi_page.file_name, file_name, MAX_FILE_NAME_LENGTH);
gimp_set_data (DATA_IMAGE_LIST, &multi_page, sizeof (multi_page));
}
}
static GimpLayer *
gimp_image_merge_layers (GimpImage *image,
GSList *merge_list,
GimpContext *context,
GimpMergeType merge_type,
const gchar *undo_desc)
{
GList *list;
GSList *reverse_list = NULL;
PixelRegion src1PR, src2PR, maskPR;
PixelRegion *mask;
GimpLayer *merge_layer;
GimpLayer *layer;
GimpLayer *bottom_layer;
GimpImageType type;
gint count;
gint x1, y1, x2, y2;
gint x3, y3, x4, y4;
CombinationMode operation;
gint position;
gboolean active[MAX_CHANNELS] = { TRUE, TRUE, TRUE, TRUE };
gint off_x, off_y;
gchar *name;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
layer = NULL;
type = GIMP_RGBA_IMAGE;
x1 = y1 = 0;
x2 = y2 = 0;
bottom_layer = NULL;
/* Get the layer extents */
count = 0;
while (merge_list)
{
layer = merge_list->data;
gimp_item_offsets (GIMP_ITEM (layer), &off_x, &off_y);
switch (merge_type)
{
case GIMP_EXPAND_AS_NECESSARY:
case GIMP_CLIP_TO_IMAGE:
if (! count)
{
x1 = off_x;
y1 = off_y;
x2 = off_x + gimp_item_width (GIMP_ITEM (layer));
y2 = off_y + gimp_item_height (GIMP_ITEM (layer));
}
else
{
if (off_x < x1)
x1 = off_x;
if (off_y < y1)
y1 = off_y;
if ((off_x + gimp_item_width (GIMP_ITEM (layer))) > x2)
x2 = (off_x + gimp_item_width (GIMP_ITEM (layer)));
if ((off_y + gimp_item_height (GIMP_ITEM (layer))) > y2)
y2 = (off_y + gimp_item_height (GIMP_ITEM (layer)));
}
if (merge_type == GIMP_CLIP_TO_IMAGE)
{
x1 = CLAMP (x1, 0, gimp_image_get_width (image));
y1 = CLAMP (y1, 0, gimp_image_get_height (image));
x2 = CLAMP (x2, 0, gimp_image_get_width (image));
y2 = CLAMP (y2, 0, gimp_image_get_height (image));
}
break;
case GIMP_CLIP_TO_BOTTOM_LAYER:
if (merge_list->next == NULL)
{
x1 = off_x;
y1 = off_y;
x2 = off_x + gimp_item_width (GIMP_ITEM (layer));
y2 = off_y + gimp_item_height (GIMP_ITEM (layer));
}
break;
case GIMP_FLATTEN_IMAGE:
if (merge_list->next == NULL)
{
x1 = 0;
y1 = 0;
x2 = gimp_image_get_width (image);
y2 = gimp_image_get_height (image);
}
break;
}
count ++;
reverse_list = g_slist_prepend (reverse_list, layer);
merge_list = g_slist_next (merge_list);
}
if ((x2 - x1) == 0 || (y2 - y1) == 0)
return NULL;
/* Start a merge undo group. */
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_IMAGE_LAYERS_MERGE,
undo_desc);
name = g_strdup (gimp_object_get_name (GIMP_OBJECT (layer)));
if (merge_type == GIMP_FLATTEN_IMAGE ||
gimp_drawable_type (GIMP_DRAWABLE (layer)) == GIMP_INDEXED_IMAGE)
{
guchar bg[4] = { 0, 0, 0, 0 };
type = GIMP_IMAGE_TYPE_FROM_BASE_TYPE (gimp_image_base_type (image));
merge_layer = gimp_layer_new (image, (x2 - x1), (y2 - y1),
type,
gimp_object_get_name (GIMP_OBJECT (layer)),
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (! merge_layer)
{
g_warning ("%s: could not allocate merge layer.", G_STRFUNC);
return NULL;
}
GIMP_ITEM (merge_layer)->offset_x = x1;
GIMP_ITEM (merge_layer)->offset_y = y1;
/* get the background for compositing */
gimp_image_get_background (image, context,
gimp_drawable_type (GIMP_DRAWABLE (merge_layer)),
bg);
/* init the pixel region */
pixel_region_init (&src1PR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (merge_layer)),
0, 0, (x2 - x1), (y2 - y1),
TRUE);
/* set the region to the background color */
color_region (&src1PR, bg);
position = 0;
}
else
{
/* The final merged layer inherits the name of the bottom most layer
* and the resulting layer has an alpha channel whether or not the
* original did. Opacity is set to 100% and the MODE is set to normal.
*/
merge_layer =
gimp_layer_new (image, (x2 - x1), (y2 - y1),
gimp_drawable_type_with_alpha (GIMP_DRAWABLE (layer)),
"merged layer",
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (!merge_layer)
{
g_warning ("%s: could not allocate merge layer", G_STRFUNC);
return NULL;
}
GIMP_ITEM (merge_layer)->offset_x = x1;
GIMP_ITEM (merge_layer)->offset_y = y1;
/* clear the layer */
pixel_region_init (&src1PR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (merge_layer)),
0, 0,
(x2 - x1), (y2 - y1),
TRUE);
clear_region (&src1PR);
/* Find the index in the layer list of the bottom layer--we need this
* in order to add the final, merged layer to the layer list correctly
*/
layer = reverse_list->data;
position =
gimp_container_num_children (image->layers) -
gimp_container_get_child_index (image->layers, GIMP_OBJECT (layer));
}
bottom_layer = layer;
/* Copy the tattoo and parasites of the bottom layer to the new layer */
gimp_item_set_tattoo (GIMP_ITEM (merge_layer),
gimp_item_get_tattoo (GIMP_ITEM (bottom_layer)));
g_object_unref (GIMP_ITEM (merge_layer)->parasites);
GIMP_ITEM (merge_layer)->parasites =
gimp_parasite_list_copy (GIMP_ITEM (bottom_layer)->parasites);
while (reverse_list)
{
GimpLayerModeEffects mode;
layer = reverse_list->data;
/* determine what sort of operation is being attempted and
* if it's actually legal...
*/
operation = gimp_image_merge_layers_get_operation (merge_layer, layer);
if (operation == -1)
{
gimp_layer_add_alpha (layer);
/* try again ... */
operation = gimp_image_merge_layers_get_operation (merge_layer,
layer);
}
if (operation == -1)
{
g_warning ("%s: attempting to merge incompatible layers.", G_STRFUNC);
return NULL;
}
gimp_item_offsets (GIMP_ITEM (layer), &off_x, &off_y);
x3 = CLAMP (off_x, x1, x2);
y3 = CLAMP (off_y, y1, y2);
x4 = CLAMP (off_x + gimp_item_width (GIMP_ITEM (layer)), x1, x2);
y4 = CLAMP (off_y + gimp_item_height (GIMP_ITEM (layer)), y1, y2);
/* configure the pixel regions */
pixel_region_init (&src1PR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (merge_layer)),
(x3 - x1), (y3 - y1), (x4 - x3), (y4 - y3),
TRUE);
pixel_region_init (&src2PR,
gimp_drawable_get_tiles (GIMP_DRAWABLE (layer)),
(x3 - off_x), (y3 - off_y),
(x4 - x3), (y4 - y3),
FALSE);
if (gimp_layer_get_mask (layer) &&
gimp_layer_mask_get_apply (layer->mask))
{
TileManager *tiles;
tiles = gimp_drawable_get_tiles (GIMP_DRAWABLE (layer->mask));
pixel_region_init (&maskPR, tiles,
(x3 - off_x), (y3 - off_y), (x4 - x3), (y4 - y3),
FALSE);
mask = &maskPR;
}
else
{
mask = NULL;
}
/* DISSOLVE_MODE is special since it is the only mode that does not
* work on the projection with the lower layer, but only locally on
* the layers alpha channel.
*/
mode = gimp_layer_get_mode (layer);
if (layer == bottom_layer && mode != GIMP_DISSOLVE_MODE)
mode = GIMP_NORMAL_MODE;
combine_regions (&src1PR, &src2PR, &src1PR, mask, NULL,
gimp_layer_get_opacity (layer) * 255.999,
mode,
active,
operation);
gimp_image_remove_layer (image, layer);
reverse_list = g_slist_next (reverse_list);
}
g_slist_free (reverse_list);
/* if the type is flatten, remove all the remaining layers */
if (merge_type == GIMP_FLATTEN_IMAGE)
{
list = GIMP_LIST (image->layers)->list;
while (list)
{
layer = list->data;
list = g_list_next (list);
gimp_image_remove_layer (image, layer);
}
gimp_image_add_layer (image, merge_layer, position);
}
else
{
/* Add the layer to the image */
gimp_image_add_layer (image, merge_layer,
gimp_container_num_children (image->layers) - position + 1);
}
/* set the name after the original layers have been removed so we
* don't end up with #2 appended to the name
*/
gimp_object_take_name (GIMP_OBJECT (merge_layer), name);
gimp_item_set_visible (GIMP_ITEM (merge_layer), TRUE, TRUE);
/* End the merge undo group */
gimp_image_undo_group_end (image);
gimp_drawable_update (GIMP_DRAWABLE (merge_layer),
0, 0,
gimp_item_width (GIMP_ITEM (merge_layer)),
gimp_item_height (GIMP_ITEM (merge_layer)));
return merge_layer;
}
static GimpLayer *
gimp_image_merge_layers (GimpImage *image,
GimpContainer *container,
GSList *merge_list,
GimpContext *context,
GimpMergeType merge_type)
{
GList *list;
GSList *reverse_list = NULL;
GSList *layers;
GimpLayer *merge_layer;
GimpLayer *layer;
GimpLayer *bottom_layer;
GimpParasiteList *parasites;
gint count;
gint x1, y1, x2, y2;
gint off_x, off_y;
gint position;
gchar *name;
GimpLayer *parent;
g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
g_return_val_if_fail (GIMP_IS_CONTEXT (context), NULL);
layer = NULL;
x1 = y1 = 0;
x2 = y2 = 0;
bottom_layer = NULL;
parent = gimp_layer_get_parent (merge_list->data);
/* Get the layer extents */
count = 0;
while (merge_list)
{
layer = merge_list->data;
gimp_item_get_offset (GIMP_ITEM (layer), &off_x, &off_y);
switch (merge_type)
{
case GIMP_EXPAND_AS_NECESSARY:
case GIMP_CLIP_TO_IMAGE:
if (! count)
{
x1 = off_x;
y1 = off_y;
x2 = off_x + gimp_item_get_width (GIMP_ITEM (layer));
y2 = off_y + gimp_item_get_height (GIMP_ITEM (layer));
}
else
{
if (off_x < x1)
x1 = off_x;
if (off_y < y1)
y1 = off_y;
if ((off_x + gimp_item_get_width (GIMP_ITEM (layer))) > x2)
x2 = (off_x + gimp_item_get_width (GIMP_ITEM (layer)));
if ((off_y + gimp_item_get_height (GIMP_ITEM (layer))) > y2)
y2 = (off_y + gimp_item_get_height (GIMP_ITEM (layer)));
}
if (merge_type == GIMP_CLIP_TO_IMAGE)
{
x1 = CLAMP (x1, 0, gimp_image_get_width (image));
y1 = CLAMP (y1, 0, gimp_image_get_height (image));
x2 = CLAMP (x2, 0, gimp_image_get_width (image));
y2 = CLAMP (y2, 0, gimp_image_get_height (image));
}
break;
case GIMP_CLIP_TO_BOTTOM_LAYER:
if (merge_list->next == NULL)
{
x1 = off_x;
y1 = off_y;
x2 = off_x + gimp_item_get_width (GIMP_ITEM (layer));
y2 = off_y + gimp_item_get_height (GIMP_ITEM (layer));
}
break;
case GIMP_FLATTEN_IMAGE:
if (merge_list->next == NULL)
{
x1 = 0;
y1 = 0;
x2 = gimp_image_get_width (image);
y2 = gimp_image_get_height (image);
}
break;
}
count ++;
reverse_list = g_slist_prepend (reverse_list, layer);
merge_list = g_slist_next (merge_list);
}
if ((x2 - x1) == 0 || (y2 - y1) == 0)
return NULL;
/* Start a merge undo group. */
name = g_strdup (gimp_object_get_name (layer));
if (merge_type == GIMP_FLATTEN_IMAGE ||
(gimp_drawable_is_indexed (GIMP_DRAWABLE (layer)) &&
! gimp_drawable_has_alpha (GIMP_DRAWABLE (layer))))
{
GeglColor *color;
GimpRGB bg;
merge_layer = gimp_layer_new (image, (x2 - x1), (y2 - y1),
gimp_image_get_layer_format (image, FALSE),
gimp_object_get_name (layer),
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (! merge_layer)
{
g_warning ("%s: could not allocate merge layer.", G_STRFUNC);
return NULL;
}
gimp_item_set_offset (GIMP_ITEM (merge_layer), x1, y1);
/* get the background for compositing */
gimp_context_get_background (context, &bg);
color = gimp_gegl_color_new (&bg);
gegl_buffer_set_color (gimp_drawable_get_buffer (GIMP_DRAWABLE (merge_layer)),
GEGL_RECTANGLE(0,0,x2-x1,y2-y1), color);
g_object_unref (color);
position = 0;
}
else
{
/* The final merged layer inherits the name of the bottom most layer
* and the resulting layer has an alpha channel whether or not the
* original did. Opacity is set to 100% and the MODE is set to normal.
*/
merge_layer =
gimp_layer_new (image, (x2 - x1), (y2 - y1),
gimp_drawable_get_format_with_alpha (GIMP_DRAWABLE (layer)),
"merged layer",
GIMP_OPACITY_OPAQUE, GIMP_NORMAL_MODE);
if (!merge_layer)
{
g_warning ("%s: could not allocate merge layer", G_STRFUNC);
return NULL;
}
gimp_item_set_offset (GIMP_ITEM (merge_layer), x1, y1);
/* clear the layer */
gegl_buffer_clear (gimp_drawable_get_buffer (GIMP_DRAWABLE (merge_layer)),
NULL);
/* Find the index in the layer list of the bottom layer--we need this
* in order to add the final, merged layer to the layer list correctly
*/
layer = reverse_list->data;
position =
gimp_container_get_n_children (container) -
gimp_container_get_child_index (container, GIMP_OBJECT (layer));
}
bottom_layer = layer;
/* Copy the tattoo and parasites of the bottom layer to the new layer */
gimp_item_set_tattoo (GIMP_ITEM (merge_layer),
gimp_item_get_tattoo (GIMP_ITEM (bottom_layer)));
parasites = gimp_item_get_parasites (GIMP_ITEM (bottom_layer));
parasites = gimp_parasite_list_copy (parasites);
gimp_item_set_parasites (GIMP_ITEM (merge_layer), parasites);
g_object_unref (parasites);
for (layers = reverse_list; layers; layers = g_slist_next (layers))
{
GeglBuffer *merge_buffer;
GeglBuffer *layer_buffer;
GimpApplicator *applicator;
GimpLayerModeEffects mode;
layer = layers->data;
gimp_item_get_offset (GIMP_ITEM (layer), &off_x, &off_y);
/* DISSOLVE_MODE is special since it is the only mode that does not
* work on the projection with the lower layer, but only locally on
* the layers alpha channel.
*/
mode = gimp_layer_get_mode (layer);
if (layer == bottom_layer && mode != GIMP_DISSOLVE_MODE)
mode = GIMP_NORMAL_MODE;
merge_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (merge_layer));
layer_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer));
applicator =
gimp_applicator_new (NULL,
gimp_drawable_get_linear (GIMP_DRAWABLE (layer)),
FALSE, FALSE);
if (gimp_layer_get_mask (layer) &&
gimp_layer_get_apply_mask (layer))
{
GeglBuffer *mask_buffer;
mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (layer->mask));
gimp_applicator_set_mask_buffer (applicator, mask_buffer);
gimp_applicator_set_mask_offset (applicator,
- (x1 - off_x),
- (y1 - off_y));
}
gimp_applicator_set_src_buffer (applicator, merge_buffer);
gimp_applicator_set_dest_buffer (applicator, merge_buffer);
gimp_applicator_set_apply_buffer (applicator, layer_buffer);
gimp_applicator_set_apply_offset (applicator,
- (x1 - off_x),
- (y1 - off_y));
gimp_applicator_set_mode (applicator,
gimp_layer_get_opacity (layer),
mode);
gimp_applicator_blit (applicator,
GEGL_RECTANGLE (0, 0,
gegl_buffer_get_width (merge_buffer),
gegl_buffer_get_height (merge_buffer)));
g_object_unref (applicator);
gimp_image_remove_layer (image, layer, TRUE, NULL);
}
g_slist_free (reverse_list);
gimp_object_take_name (GIMP_OBJECT (merge_layer), name);
gimp_item_set_visible (GIMP_ITEM (merge_layer), TRUE, FALSE);
/* if the type is flatten, remove all the remaining layers */
if (merge_type == GIMP_FLATTEN_IMAGE)
{
list = gimp_image_get_layer_iter (image);
while (list)
{
layer = list->data;
list = g_list_next (list);
gimp_image_remove_layer (image, layer, TRUE, NULL);
}
gimp_image_add_layer (image, merge_layer, parent,
position, TRUE);
}
else
{
/* Add the layer to the image */
gimp_image_add_layer (image, merge_layer, parent,
gimp_container_get_n_children (container) -
position + 1,
TRUE);
}
gimp_drawable_update (GIMP_DRAWABLE (merge_layer),
0, 0,
gimp_item_get_width (GIMP_ITEM (merge_layer)),
gimp_item_get_height (GIMP_ITEM (merge_layer)));
return merge_layer;
}
void
gimp_projection_construct (GimpProjection *proj,
gint x,
gint y,
gint w,
gint h)
{
g_return_if_fail (GIMP_IS_PROJECTION (proj));
#if 0
GList *layers = gimp_projectable_get_layers (proj->projectable);
if (layers && ! layers->next) /* a single layer */
{
GimpLayer *layer = layers->data;
GimpDrawable *drawable = GIMP_DRAWABLE (layer);
GimpItem *item = GIMP_ITEM (layer);
gint width, height;
gint off_x, off_y;
gimp_projectable_get_offset (proj->projectable, &proj_off_x, &proj_off_y);
gimp_projectable_get_size (proj->projectable, &width, &height);
gimp_item_get_offset (item, &off_x, &off_y);
if (gimp_drawable_has_alpha (drawable) &&
gimp_item_get_visible (item) &&
gimp_item_get_width (item) == width &&
gimp_item_get_height (item) == height &&
! gimp_drawable_is_indexed (layer) &&
gimp_layer_get_opacity (layer) == GIMP_OPACITY_OPAQUE &&
off_x == 0 &&
off_y == 0 &&
proj_offset_x == 0 &&
proj_offset_y == 0)
{
PixelRegion srcPR, destPR;
g_printerr ("cow-projection!");
pixel_region_init (&srcPR,
gimp_drawable_get_tiles (layer),
x, y, w,h, FALSE);
pixel_region_init (&destPR,
gimp_pickable_get_tiles (GIMP_PICKABLE (proj)),
x, y, w,h, TRUE);
copy_region (&srcPR, &destPR);
proj->construct_flag = TRUE;
gimp_projection_construct_legacy (proj, FALSE, x, y, w, h);
return;
}
}
#endif
/* First, determine if the projection image needs to be
* initialized--this is the case when there are no visible
* layers that cover the entire canvas--either because layers
* are offset or only a floating selection is visible
*/
gimp_projection_initialize (proj, x, y, w, h);
/* call functions which process the list of layers and
* the list of channels
*/
if (proj->use_gegl)
{
gimp_projection_construct_gegl (proj, x, y, w, h);
}
else
{
proj->construct_flag = FALSE;
gimp_projection_construct_legacy (proj, TRUE, x, y, w, h);
}
}
/**
* gimp_export_image:
* @image_ID: Pointer to the image_ID.
* @drawable_ID: Pointer to the drawable_ID.
* @format_name: The (short) name of the image_format (e.g. JPEG or GIF).
* @capabilities: What can the image_format do?
*
* Takes an image and a drawable to be saved together with a
* description of the capabilities of the image_format. If the
* type of image doesn't match the capabilities of the format
* a dialog is opened that informs the user that the image has
* to be exported and offers to do the necessary conversions.
*
* If the user chooses to export the image, a copy is created.
* This copy is then converted, the image_ID and drawable_ID
* are changed to point to the new image and the procedure returns
* GIMP_EXPORT_EXPORT. The save_plugin has to take care of deleting the
* created image using gimp_image_delete() when it has saved it.
*
* If the user chooses to Ignore the export problem, the image_ID
* and drawable_ID is not altered, GIMP_EXPORT_IGNORE is returned and
* the save_plugin should try to save the original image. If the
* user chooses Cancel, GIMP_EXPORT_CANCEL is returned and the
* save_plugin should quit itself with status %GIMP_PDB_CANCEL.
*
* If @format_name is NULL, no dialogs will be shown and this function
* will behave as if the user clicked on the 'Export' button, if a
* dialog would have been shown.
*
* Returns: An enum of #GimpExportReturn describing the user_action.
**/
GimpExportReturn
gimp_export_image (gint32 *image_ID,
gint32 *drawable_ID,
const gchar *format_name,
GimpExportCapabilities capabilities)
{
GSList *actions = NULL;
GimpImageBaseType type;
gint32 i;
gint32 n_layers;
gint32 *layers;
gboolean interactive = FALSE;
gboolean added_flatten = FALSE;
gboolean has_layer_masks = FALSE;
gboolean background_has_alpha = TRUE;
GimpExportReturn retval = GIMP_EXPORT_CANCEL;
g_return_val_if_fail (*image_ID > -1 && *drawable_ID > -1, FALSE);
/* do some sanity checks */
if (capabilities & GIMP_EXPORT_NEEDS_ALPHA)
capabilities |= GIMP_EXPORT_CAN_HANDLE_ALPHA;
if (capabilities & GIMP_EXPORT_CAN_HANDLE_LAYERS_AS_ANIMATION)
capabilities |= GIMP_EXPORT_CAN_HANDLE_LAYERS;
if (capabilities & GIMP_EXPORT_CAN_HANDLE_LAYER_MASKS)
capabilities |= GIMP_EXPORT_CAN_HANDLE_LAYERS;
if (capabilities & GIMP_EXPORT_CAN_HANDLE_LAYERS)
capabilities |= GIMP_EXPORT_CAN_HANDLE_ALPHA;
if (format_name && g_getenv ("GIMP_INTERACTIVE_EXPORT"))
interactive = TRUE;
/* ask for confirmation if the user is not saving a layer (see bug #51114) */
if (interactive &&
! gimp_item_is_layer (*drawable_ID) &&
! (capabilities & GIMP_EXPORT_CAN_HANDLE_LAYERS))
{
if (gimp_item_is_layer_mask (*drawable_ID))
{
retval = confirm_save_dialog
(_("You are about to save a layer mask as %s.\n"
"This will not save the visible layers."), format_name);
}
else if (gimp_item_is_channel (*drawable_ID))
{
retval = confirm_save_dialog
(_("You are about to save a channel (saved selection) as %s.\n"
"This will not save the visible layers."), format_name);
}
else
{
/* this should not happen */
g_warning ("%s: unknown drawable type!", G_STRFUNC);
}
/* cancel - the user can then select an appropriate layer to save */
if (retval == GIMP_EXPORT_CANCEL)
return GIMP_EXPORT_CANCEL;
}
/* check alpha and layer masks */
layers = gimp_image_get_layers (*image_ID, &n_layers);
for (i = 0; i < n_layers; i++)
{
if (gimp_drawable_has_alpha (layers[i]))
{
if (! (capabilities & GIMP_EXPORT_CAN_HANDLE_ALPHA))
{
actions = g_slist_prepend (actions, &export_action_flatten);
added_flatten = TRUE;
break;
}
}
else
{
/* If this is the last layer, it's visible and has no alpha
* channel, then the image has a "flat" background
*/
if (i == n_layers - 1 && gimp_item_get_visible (layers[i]))
background_has_alpha = FALSE;
if (capabilities & GIMP_EXPORT_NEEDS_ALPHA)
{
actions = g_slist_prepend (actions, &export_action_add_alpha);
break;
}
}
}
if (! added_flatten)
{
for (i = 0; i < n_layers; i++)
{
if (gimp_layer_get_mask (layers[i]) != -1)
has_layer_masks = TRUE;
}
}
if (! added_flatten)
{
gint32 n_children;
gint32 *children;
children = gimp_item_get_children (layers[0], &n_children);
/* check if layer size != canvas size, opacity != 100%, or offsets != 0 */
if (n_layers == 1 &&
! children &&
gimp_item_is_layer (*drawable_ID) &&
! (capabilities & GIMP_EXPORT_CAN_HANDLE_LAYERS))
{
gint offset_x;
gint offset_y;
gimp_drawable_offsets (*drawable_ID, &offset_x, &offset_y);
if ((gimp_layer_get_opacity (*drawable_ID) < 100.0) ||
(gimp_image_width (*image_ID) !=
gimp_drawable_width (*drawable_ID)) ||
(gimp_image_height (*image_ID) !=
gimp_drawable_height (*drawable_ID)) ||
offset_x || offset_y)
{
if (capabilities & GIMP_EXPORT_CAN_HANDLE_ALPHA)
{
actions = g_slist_prepend (actions,
&export_action_merge_single);
}
else
{
actions = g_slist_prepend (actions,
&export_action_flatten);
}
}
}
/* check multiple layers */
else if (n_layers > 1)
{
if (capabilities & GIMP_EXPORT_CAN_HANDLE_LAYERS_AS_ANIMATION)
{
if (background_has_alpha ||
capabilities & GIMP_EXPORT_NEEDS_ALPHA)
actions = g_slist_prepend (actions,
&export_action_animate_or_merge);
else
actions = g_slist_prepend (actions,
&export_action_animate_or_flatten);
}
else if (! (capabilities & GIMP_EXPORT_CAN_HANDLE_LAYERS))
{
if (capabilities & GIMP_EXPORT_NEEDS_ALPHA)
actions = g_slist_prepend (actions,
&export_action_merge);
else
actions = g_slist_prepend (actions,
&export_action_merge_or_flatten);
}
}
/* check for a single toplevel layer group */
else if (children)
{
if (! (capabilities & GIMP_EXPORT_CAN_HANDLE_LAYERS))
{
if (capabilities & GIMP_EXPORT_NEEDS_ALPHA)
actions = g_slist_prepend (actions,
&export_action_merge);
else
actions = g_slist_prepend (actions,
&export_action_merge_or_flatten);
}
}
g_free (children);
/* check layer masks */
if (has_layer_masks &&
! (capabilities & GIMP_EXPORT_CAN_HANDLE_LAYER_MASKS))
actions = g_slist_prepend (actions, &export_action_apply_masks);
}
g_free (layers);
/* check the image type */
type = gimp_image_base_type (*image_ID);
switch (type)
{
case GIMP_RGB:
if (! (capabilities & GIMP_EXPORT_CAN_HANDLE_RGB))
{
if ((capabilities & GIMP_EXPORT_CAN_HANDLE_INDEXED) &&
(capabilities & GIMP_EXPORT_CAN_HANDLE_GRAY))
actions = g_slist_prepend (actions,
&export_action_convert_indexed_or_grayscale);
else if (capabilities & GIMP_EXPORT_CAN_HANDLE_INDEXED)
actions = g_slist_prepend (actions,
&export_action_convert_indexed);
else if (capabilities & GIMP_EXPORT_CAN_HANDLE_GRAY)
actions = g_slist_prepend (actions,
&export_action_convert_grayscale);
else if (capabilities & GIMP_EXPORT_CAN_HANDLE_BITMAP)
actions = g_slist_prepend (actions,
&export_action_convert_bitmap);
}
break;
case GIMP_GRAY:
if (! (capabilities & GIMP_EXPORT_CAN_HANDLE_GRAY))
{
if ((capabilities & GIMP_EXPORT_CAN_HANDLE_RGB) &&
(capabilities & GIMP_EXPORT_CAN_HANDLE_INDEXED))
actions = g_slist_prepend (actions,
&export_action_convert_rgb_or_indexed);
else if (capabilities & GIMP_EXPORT_CAN_HANDLE_RGB)
actions = g_slist_prepend (actions,
&export_action_convert_rgb);
else if (capabilities & GIMP_EXPORT_CAN_HANDLE_INDEXED)
actions = g_slist_prepend (actions,
&export_action_convert_indexed);
else if (capabilities & GIMP_EXPORT_CAN_HANDLE_BITMAP)
actions = g_slist_prepend (actions,
&export_action_convert_bitmap);
}
break;
case GIMP_INDEXED:
if (! (capabilities & GIMP_EXPORT_CAN_HANDLE_INDEXED))
{
if ((capabilities & GIMP_EXPORT_CAN_HANDLE_RGB) &&
(capabilities & GIMP_EXPORT_CAN_HANDLE_GRAY))
actions = g_slist_prepend (actions,
&export_action_convert_rgb_or_grayscale);
else if (capabilities & GIMP_EXPORT_CAN_HANDLE_RGB)
actions = g_slist_prepend (actions,
&export_action_convert_rgb);
else if (capabilities & GIMP_EXPORT_CAN_HANDLE_GRAY)
actions = g_slist_prepend (actions,
&export_action_convert_grayscale);
else if (capabilities & GIMP_EXPORT_CAN_HANDLE_BITMAP)
{
gint n_colors;
g_free (gimp_image_get_colormap (*image_ID, &n_colors));
if (n_colors > 2)
actions = g_slist_prepend (actions,
&export_action_convert_bitmap);
}
}
break;
}
if (actions)
{
actions = g_slist_reverse (actions);
if (interactive)
retval = export_dialog (actions, format_name);
else
retval = GIMP_EXPORT_EXPORT;
}
else
{
retval = GIMP_EXPORT_IGNORE;
}
if (retval == GIMP_EXPORT_EXPORT)
{
GSList *list;
*image_ID = gimp_image_duplicate (*image_ID);
*drawable_ID = gimp_image_get_active_layer (*image_ID);
gimp_image_undo_disable (*image_ID);
for (list = actions; list; list = list->next)
{
export_action_perform (list->data, *image_ID, drawable_ID);
}
}
g_slist_free (actions);
return retval;
}
/* ------------------------------------
* gap_image_merge_group_layer
* ------------------------------------
* merge the specified group layer and return the id of the resulting layer.
*
* The merge strategy
* o) create a temporary image of same size/type (l_tmp_img_id)
* o) copy the specified grouplayer to the temporary image (l_tmp_img_id)
* o) call gimp_image_merge_visible_layers on the temporary image (l_tmp_img_id, mode)
* o) copy the merged layer back to the original image
* to the same group at the position of the original layergroup
* o) remove the temporary image
* o) remove original layergroup
* o) rename the resuling merged layer.
*
* returns 0 if all done OK
* (or -1 on error)
*/
gint32
gap_image_merge_group_layer(gint32 image_id,
gint32 group_layer_id,
gint merge_mode)
{
gint32 l_tmp_img_id;
gint32 l_new_layer_id;
gint32 l_merged_layer_id;
gint32 l_parent_id;
gint32 l_position;
gint l_src_offset_x;
gint l_src_offset_y;
gboolean l_visible;
char *l_name;
if (!gimp_item_is_group(group_layer_id))
{
/* the specified group_layer_id is not a group
* -- no merge is done, return its id as result --
*/
return(group_layer_id);
}
l_visible = gimp_item_get_visible(group_layer_id);
l_name = gimp_item_get_name(group_layer_id);
/* create a temporary image */
l_tmp_img_id = gap_image_new_of_samesize(image_id);
/* copy the grouplayer to the temporary image */
l_new_layer_id = gap_layer_copy_to_dest_image(l_tmp_img_id,
group_layer_id,
100.0, /* full opacity */
0, /* NORMAL paintmode */
&l_src_offset_x,
&l_src_offset_y
);
gimp_image_insert_layer (l_tmp_img_id, l_new_layer_id, 0, 0);
gimp_layer_set_offsets(l_new_layer_id, l_src_offset_x, l_src_offset_y);
gimp_item_set_visible(l_new_layer_id, TRUE);
/* merge visible layers in the temporary image */
l_merged_layer_id = gimp_image_merge_visible_layers (l_tmp_img_id, merge_mode);
l_new_layer_id = gap_layer_copy_to_dest_image(image_id,
l_merged_layer_id,
gimp_layer_get_opacity(group_layer_id),
gimp_layer_get_mode(group_layer_id),
&l_src_offset_x,
&l_src_offset_y
);
l_position = gimp_image_get_item_position (image_id, group_layer_id);
l_parent_id = gimp_item_get_parent(group_layer_id);
if (l_parent_id < 0)
{
l_parent_id = 0;
}
gimp_image_insert_layer (image_id, l_new_layer_id, l_parent_id, l_position);
gimp_layer_set_offsets(l_new_layer_id, l_src_offset_x, l_src_offset_y);
/* remove the original group layer from the original image */
gimp_image_remove_layer(image_id, group_layer_id);
/* restore the original layer name */
if (l_name != NULL)
{
gimp_item_set_name(l_new_layer_id, l_name);
g_free(l_name);
}
gimp_item_set_visible(l_new_layer_id, l_visible);
/* remove the temporary image */
gap_image_delete_immediate(l_tmp_img_id);
return(l_new_layer_id);
} /* end gap_image_merge_group_layer */