static GValueArray *
channel_new_invoker (GimpProcedure *procedure,
Gimp *gimp,
GimpContext *context,
GimpProgress *progress,
const GValueArray *args,
GError **error)
{
gboolean success = TRUE;
GValueArray *return_vals;
GimpImage *image;
gint32 width;
gint32 height;
const gchar *name;
gdouble opacity;
GimpRGB color;
GimpChannel *channel = NULL;
image = gimp_value_get_image (&args->values[0], gimp);
width = g_value_get_int (&args->values[1]);
height = g_value_get_int (&args->values[2]);
name = g_value_get_string (&args->values[3]);
opacity = g_value_get_double (&args->values[4]);
gimp_value_get_rgb (&args->values[5], &color);
if (success)
{
GimpRGB rgb_color = color;
rgb_color.a = opacity / 100.0;
channel = gimp_channel_new (image, width, height, name, &rgb_color);
if (! channel)
success = FALSE;
}
return_vals = gimp_procedure_get_return_values (procedure, success,
error ? *error : NULL);
if (success)
gimp_value_set_channel (&return_vals->values[1], channel);
return return_vals;
}
void
gimp_image_set_quick_mask_state (GimpImage *image,
gboolean active)
{
GimpChannel *selection;
GimpChannel *mask;
gboolean channel_was_active;
g_return_if_fail (GIMP_IS_IMAGE (image));
if (active == gimp_image_get_quick_mask_state (image))
return;
/* Keep track of the state so that we can make the right drawable
* active again when deactiviting quick mask (see bug #134371).
*/
if (image->quick_mask_state)
channel_was_active = (image->quick_mask_state & CHANNEL_WAS_ACTIVE) != 0;
else
channel_was_active = gimp_image_get_active_channel (image) != NULL;
/* Set image->quick_mask_state early so we can return early when
* being called recursively.
*/
image->quick_mask_state = (active
? TRUE | (channel_was_active ?
CHANNEL_WAS_ACTIVE : 0)
: FALSE);
selection = gimp_image_get_mask (image);
mask = gimp_image_get_quick_mask (image);
if (active)
{
if (! mask)
{
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_IMAGE_QUICK_MASK,
_("Enable Quick Mask"));
if (gimp_channel_is_empty (selection))
{
/* if no selection */
GimpLayer *floating_sel = gimp_image_floating_sel (image);
if (floating_sel)
floating_sel_to_layer (floating_sel);
mask = gimp_channel_new (image,
image->width,
image->height,
GIMP_IMAGE_QUICK_MASK_NAME,
&image->quick_mask_color);
/* Clear the mask */
gimp_channel_clear (mask, NULL, FALSE);
}
else
{
/* if selection */
mask = GIMP_CHANNEL (gimp_item_duplicate (GIMP_ITEM (selection),
GIMP_TYPE_CHANNEL,
FALSE));
/* Clear the selection */
gimp_channel_clear (selection, NULL, TRUE);
gimp_channel_set_color (mask, &image->quick_mask_color, FALSE);
gimp_item_rename (GIMP_ITEM (mask), GIMP_IMAGE_QUICK_MASK_NAME);
}
if (image->quick_mask_inverted)
gimp_channel_invert (mask, FALSE);
gimp_image_add_channel (image, mask, 0);
gimp_image_undo_group_end (image);
}
}
else
{
if (mask)
{
GimpLayer *floating_sel = gimp_image_floating_sel (image);
gimp_image_undo_group_start (image, GIMP_UNDO_GROUP_IMAGE_QUICK_MASK,
_("Disable Quick Mask"));
if (image->quick_mask_inverted)
gimp_channel_invert (mask, TRUE);
if (floating_sel && floating_sel->fs.drawable == GIMP_DRAWABLE (mask))
floating_sel_anchor (floating_sel);
gimp_selection_load (gimp_image_get_mask (image), mask);
gimp_image_remove_channel (image, mask);
if (! channel_was_active)
gimp_image_unset_active_channel (image);
gimp_image_undo_group_end (image);
}
}
gimp_image_quick_mask_changed (image);
}
static void
gimp_foreground_select_tool_select (GimpFreeSelectTool *free_sel,
GimpDisplay *display)
{
GimpForegroundSelectTool *fg_select;
GimpForegroundSelectOptions *options;
GimpImage *image = gimp_display_get_image (display);
GimpDrawable *drawable;
GimpScanConvert *scan_convert;
GimpChannel *mask;
const GimpVector2 *points;
gint n_points;
drawable = gimp_image_get_active_drawable (image);
fg_select = GIMP_FOREGROUND_SELECT_TOOL (free_sel);
options = GIMP_FOREGROUND_SELECT_TOOL_GET_OPTIONS (free_sel);
if (fg_select->idle_id)
{
g_source_remove (fg_select->idle_id);
fg_select->idle_id = 0;
}
if (! drawable)
return;
scan_convert = gimp_scan_convert_new ();
gimp_free_select_tool_get_points (free_sel,
&points,
&n_points);
gimp_scan_convert_add_polyline (scan_convert,
n_points,
points,
TRUE);
mask = gimp_channel_new (image,
gimp_image_get_width (image),
gimp_image_get_height (image),
"foreground-extraction", NULL);
gimp_scan_convert_render_value (scan_convert,
gimp_drawable_get_tiles (GIMP_DRAWABLE (mask)),
0, 0, 128);
gimp_scan_convert_free (scan_convert);
if (fg_select->strokes)
{
GList *list;
gimp_set_busy (image->gimp);
/* apply foreground and background markers */
for (list = fg_select->strokes; list; list = list->next)
gimp_foreground_select_tool_stroke (mask, list->data);
if (fg_select->state)
gimp_drawable_foreground_extract_siox (GIMP_DRAWABLE (mask),
fg_select->state,
fg_select->refinement,
options->smoothness,
options->sensitivity,
! options->contiguous,
GIMP_PROGRESS (fg_select));
fg_select->refinement = SIOX_REFINEMENT_NO_CHANGE;
gimp_unset_busy (image->gimp);
}
else
{
gint x1, y1;
gint x2, y2;
g_object_set (options, "background", FALSE, NULL);
gimp_foreground_select_tool_get_area (mask, &x1, &y1, &x2, &y2);
if (fg_select->state)
g_warning ("state should be NULL here");
fg_select->state =
gimp_drawable_foreground_extract_siox_init (drawable,
x1, y1, x2 - x1, y2 - y1);
}
gimp_foreground_select_tool_set_mask (fg_select, display, mask);
g_object_unref (mask);
}
gint32
xjpg_load_channel (const char *filename,
gint32 image_id,
gint32 drawable_id,
char *channel_name,
gdouble channel_opacity,
guchar red, guchar green, guchar blue)
{
GimpPixelRgn l_pixel_rgn;
GimpDrawable *l_drawable;
gint32 l_drawable_id;
struct jpeg_decompress_struct cinfo;
struct my_error_mgr jerr;
FILE *infile;
guchar *l_buf;
guchar **l_rowbuf;
int l_tile_height;
int l_scanlines;
int l_idx, l_start, l_end;
GimpRGB l_color;
gimp_rgba_set_uchar (&l_color, red, green, blue, 255);
/* We set up the normal JPEG error routines. */
cinfo.err = jpeg_std_error (&jerr.pub);
jerr.pub.error_exit = my_error_exit;
if ((infile = g_fopen (filename, "rb")) == NULL)
{
g_warning ("can't open \"%s\"\n", filename);
return -1;
}
/* Establish the setjmp return context for my_error_exit to use. */
if (setjmp (jerr.setjmp_buffer))
{
/* If we get here, the JPEG code has signaled an error.
* We need to clean up the JPEG object, close the input file, and return.
*/
jpeg_destroy_decompress (&cinfo);
if (infile)
fclose (infile);
g_printerr ("XJT: JPEG load error\n");
return -1;
}
/* Now we can initialize the JPEG decompression object. */
jpeg_create_decompress (&cinfo);
/* Step 2: specify data source (eg, a file) */
jpeg_stdio_src (&cinfo, infile);
/* Step 3: read file parameters with jpeg_read_header() */
(void) jpeg_read_header (&cinfo, TRUE);
/* We can ignore the return value from jpeg_read_header since
* (a) suspension is not possible with the stdio data source, and
* (b) we passed TRUE to reject a tables-only JPEG file as an error.
* See libjpeg.doc for more info.
*/
/* Step 4: set parameters for decompression */
/* In this example, we don't need to change any of the defaults set by
* jpeg_read_header(), so we do nothing here.
*/
/* Step 5: Start decompressor */
jpeg_start_decompress (&cinfo);
/* We may need to do some setup of our own at this point before reading
* the data. After jpeg_start_decompress() we have the correct scaled
* output image dimensions available, as well as the output colormap
* if we asked for color quantization.
* In this example, we need to make an output work buffer of the right size.
*/
/* temporary buffer */
l_tile_height = gimp_tile_height ();
l_buf = g_new (guchar, l_tile_height * cinfo.output_width * cinfo.output_components);
l_rowbuf = g_new (guchar*, l_tile_height);
for (l_idx = 0; l_idx < l_tile_height; l_idx++)
{
l_rowbuf[l_idx] = l_buf + cinfo.output_width * cinfo.output_components * l_idx;
}
/* Check if jpeg file has one component (a channel cant have more than one)
*/
if(cinfo.output_components != 1)
{
g_printerr ("XJT: cant load RGB layer %s into GRAY Image\n", filename);
fclose (infile);
return -1;
}
if(drawable_id < 0)
{
l_drawable_id = gimp_channel_new (image_id,
channel_name,
cinfo.output_width,
cinfo.output_height,
channel_opacity,
&l_color);
if(l_drawable_id < 0)
{
g_printerr ("XJT: cant create new channel\n");
fclose (infile);
return -1;
}
}
else
{
l_drawable_id = drawable_id; /* overwrite the given drawable */
}
l_drawable = gimp_drawable_get (l_drawable_id);
if((l_drawable->width != cinfo.output_width)
|| (l_drawable->height != cinfo.output_height)
|| (l_drawable->bpp != cinfo.output_components) )
{
g_printerr ("XJT: cant load-overwrite drawable (size missmatch)\n");
fclose (infile);
return -1;
}
gimp_pixel_rgn_init (&l_pixel_rgn, l_drawable, 0, 0, l_drawable->width, l_drawable->height, TRUE, FALSE);
/* Step 6: while (scan lines remain to be read) */
/* jpeg_read_scanlines(...); */
/* Here we use the library's state variable cinfo.output_scanline as the
* loop counter, so that we don't have to keep track ourselves.
*/
while (cinfo.output_scanline < cinfo.output_height)
{
l_start = cinfo.output_scanline;
l_end = cinfo.output_scanline + l_tile_height;
l_end = MIN (l_end, cinfo.output_height);
l_scanlines = l_end - l_start;
for (l_idx = 0; l_idx < l_scanlines; l_idx++)
{
jpeg_read_scanlines (&cinfo, (JSAMPARRAY) &l_rowbuf[l_idx], 1);
}
gimp_pixel_rgn_set_rect (&l_pixel_rgn, l_buf, 0, l_start, l_drawable->width, l_scanlines);
gimp_progress_update ((double) cinfo.output_scanline / (double) cinfo.output_height);
}
gimp_progress_update (1.0);
/* Step 7: Finish decompression */
jpeg_finish_decompress (&cinfo);
/* We can ignore the return value since suspension is not possible
* with the stdio data source.
*/
/* Step 8: Release JPEG decompression object */
/* This is an important step since it will release a good deal of memory. */
jpeg_destroy_decompress (&cinfo);
/* free up the temporary buffers */
g_free (l_rowbuf);
g_free (l_buf);
/* After finish_decompress, we can close the input file.
* Here we postpone it until after no more JPEG errors are possible,
* so as to simplify the setjmp error logic above. (Actually, I don't
* think that jpeg_destroy can do an error exit, but why assume anything...)
*/
fclose (infile);
/* At this point you may want to check to see whether any corrupt-data
* warnings occurred (test whether jerr.num_warnings is nonzero).
*/
/* Tell GIMP to display the image.
*/
/* gimp_drawable_flush (l_drawable); */
return (l_drawable_id);
} /* end xjpg_load_channel */
