mirror of https://github.com/GNOME/gimp.git
app: port gimp_image_contiguous_region_by_color() to GEGL
This commit is contained in:
Michael Natterer
parent
5713e6ecfb
commit
932b80f612
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@ -37,26 +37,8 @@
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#include "gimppickable.h"
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typedef struct
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{
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GimpImage *image;
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GimpImageType type;
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gboolean sample_merged;
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gboolean antialias;
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gint threshold;
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gboolean select_transparent;
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GimpSelectCriterion select_criterion;
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gboolean has_alpha;
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guchar color[MAX_CHANNELS];
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} ContinuousRegionData;
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/* local function prototypes */
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static void contiguous_region_by_color (ContinuousRegionData *cont,
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PixelRegion *imagePR,
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PixelRegion *maskPR);
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static gint pixel_difference (const guchar *col1,
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const guchar *col2,
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gboolean antialias,
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@ -216,23 +198,20 @@ gimp_image_contiguous_region_by_color (GimpImage *image,
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* fuzzy_select. Modify the image's mask to reflect the
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* additional selection
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*/
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GimpPickable *pickable;
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TileManager *tiles;
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GimpChannel *mask;
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PixelRegion imagePR, maskPR;
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gint width, height;
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ContinuousRegionData cont;
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GeglBufferIterator *iter;
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GimpPickable *pickable;
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GimpChannel *mask;
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GeglBuffer *src_buffer;
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GeglBuffer *mask_buffer;
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gint width, height;
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gboolean has_alpha;
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guchar col[MAX_CHANNELS];
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g_return_val_if_fail (GIMP_IS_IMAGE (image), NULL);
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g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
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g_return_val_if_fail (color != NULL, NULL);
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gimp_rgba_get_uchar (color,
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cont.color + 0,
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cont.color + 1,
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cont.color + 2,
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cont.color + 3);
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gimp_rgba_get_uchar (color, &col[0], &col[1], &col[2], &col[3]);
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if (sample_merged)
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pickable = GIMP_PICKABLE (gimp_image_get_projection (image));
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@ -241,22 +220,23 @@ gimp_image_contiguous_region_by_color (GimpImage *image,
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gimp_pickable_flush (pickable);
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cont.type = gimp_pickable_get_image_type (pickable);
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cont.has_alpha = GIMP_IMAGE_TYPE_HAS_ALPHA (cont.type);
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has_alpha = babl_format_has_alpha (gimp_pickable_get_format (pickable));
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tiles = gimp_pickable_get_tiles (pickable);
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width = tile_manager_width (tiles);
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height = tile_manager_height (tiles);
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src_buffer = gimp_pickable_get_buffer (pickable);
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width = gegl_buffer_get_width (src_buffer);
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height = gegl_buffer_get_height (src_buffer);
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pixel_region_init (&imagePR, tiles, 0, 0, width, height, FALSE);
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iter = gegl_buffer_iterator_new (src_buffer,
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NULL, 0, babl_format ("R'G'B'A u8"),
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GEGL_BUFFER_READ, GEGL_ABYSS_NONE);
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if (cont.has_alpha)
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if (has_alpha)
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{
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if (select_transparent)
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{
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/* don't select transparancy if "color" isn't fully transparent
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*/
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if (cont.color[3] > 0)
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if (col[3] > 0)
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select_transparent = FALSE;
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}
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}
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@ -265,21 +245,34 @@ gimp_image_contiguous_region_by_color (GimpImage *image,
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select_transparent = FALSE;
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}
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cont.image = image;
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cont.antialias = antialias;
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cont.threshold = threshold;
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cont.select_transparent = select_transparent;
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cont.select_criterion = select_criterion;
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mask = gimp_channel_new_mask (image, width, height);
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pixel_region_init (&maskPR, gimp_drawable_get_tiles (GIMP_DRAWABLE (mask)),
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0, 0, width, height,
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TRUE);
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mask_buffer = gimp_drawable_get_buffer (GIMP_DRAWABLE (mask));
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pixel_regions_process_parallel ((PixelProcessorFunc)
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contiguous_region_by_color, &cont,
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2, &imagePR, &maskPR);
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gegl_buffer_iterator_add (iter, mask_buffer,
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NULL, 0, babl_format ("Y' u8"),
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GEGL_BUFFER_WRITE, GEGL_ABYSS_NONE);
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while (gegl_buffer_iterator_next (iter))
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{
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const guchar *src = iter->data[0];
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guchar *dest = iter->data[1];
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while (iter->length--)
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{
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/* Find how closely the colors match */
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*dest = pixel_difference (col, src,
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antialias,
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threshold,
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has_alpha ? 4 : 3,
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has_alpha,
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select_transparent,
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select_criterion);
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src += 4;
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dest += 1;
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}
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}
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return mask;
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}
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@ -287,44 +280,6 @@ gimp_image_contiguous_region_by_color (GimpImage *image,
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/* private functions */
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static void
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contiguous_region_by_color (ContinuousRegionData *cont,
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PixelRegion *imagePR,
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PixelRegion *maskPR)
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{
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const guchar *image = imagePR->data;
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guchar *mask = maskPR->data;
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gint x, y;
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for (y = 0; y < imagePR->h; y++)
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{
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const guchar *i = image;
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guchar *m = mask;
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for (x = 0; x < imagePR->w; x++)
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{
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guchar rgb[MAX_CHANNELS];
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/* Get the rgb values for the color */
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gimp_image_get_color (cont->image, cont->type, i, rgb);
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/* Find how closely the colors match */
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*m++ = pixel_difference (cont->color, rgb,
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cont->antialias,
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cont->threshold,
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cont->has_alpha ? 4 : 3,
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cont->has_alpha,
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cont->select_transparent,
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cont->select_criterion);
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i += imagePR->bytes;
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}
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image += imagePR->rowstride;
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mask += maskPR->rowstride;
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}
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}
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static gint
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pixel_difference (const guchar *col1,
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const guchar *col2,
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