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app: port gimp_image_crop_auto_shrink() to GEGL

This commit is contained in:
Michael Natterer 2012-03-20 23:52:06 +01:00
parent f67bcfa82b
commit 5e176d3cd7
1 changed files with 38 additions and 16 deletions
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54
app/core/gimpimage-crop.c
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@ -23,8 +23,6 @@
#include "core-types.h"
#include "base/pixel-region.h"
#include "gimp.h"
#include "gimpcontext.h"
#include "gimpguide.h"
@ -308,11 +306,12 @@ gimp_image_crop_auto_shrink (GimpImage *image,
{
GimpDrawable *active_drawable = NULL;
GimpPickable *pickable;
GeglBuffer *buffer;
GeglRectangle rect;
ColorsEqualFunc colors_equal_func;
guchar bgcolor[MAX_CHANNELS] = { 0, 0, 0, 0 };
gboolean has_alpha;
PixelRegion PR;
guchar *buffer = NULL;
guchar *buf = NULL;
gint width, height;
GimpImageType type;
gint bytes;
@ -372,34 +371,45 @@ gimp_image_crop_auto_shrink (GimpImage *image,
width = x2 - x1;
height = y2 - y1;
pixel_region_init (&PR, gimp_pickable_get_tiles (pickable),
x1, y1, width, height, FALSE);
buffer = gimp_pickable_get_buffer (pickable);
/* The following could be optimized further by processing
* the smaller side first instead of defaulting to width --Sven
*/
buffer = g_malloc ((width > height ? width : height) * bytes);
buf = g_malloc (MAX (width, height) * bytes);
/* Check how many of the top lines are uniform/transparent. */
rect.x = x1;
rect.y = 0;
rect.width = width;
rect.height = 1;
abort = FALSE;
for (y = y1; y < y2 && !abort; y++)
{
pixel_region_get_row (&PR, x1, y, width, buffer, 1);
rect.y = y;
gegl_buffer_get (buffer, 1.0, &rect, NULL, buf, GEGL_AUTO_ROWSTRIDE);
for (x = 0; x < width && !abort; x++)
abort = !(colors_equal_func) (bgcolor, buffer + x * bytes, bytes);
abort = !(colors_equal_func) (bgcolor, buf + x * bytes, bytes);
}
if (y == y2 && !abort)
goto FINISH;
y1 = y - 1;
/* Check how many of the bottom lines are uniform/transparent. */
rect.x = x1;
rect.y = 0;
rect.width = width;
rect.height = 1;
abort = FALSE;
for (y = y2; y > y1 && !abort; y--)
{
pixel_region_get_row (&PR, x1, y-1 , width, buffer, 1);
rect.y = y - 1;
gegl_buffer_get (buffer, 1.0, &rect, NULL, buf, GEGL_AUTO_ROWSTRIDE);
for (x = 0; x < width && !abort; x++)
abort = !(colors_equal_func) (bgcolor, buffer + x * bytes, bytes);
abort = !(colors_equal_func) (bgcolor, buf + x * bytes, bytes);
}
y2 = y + 1;
@ -407,22 +417,34 @@ gimp_image_crop_auto_shrink (GimpImage *image,
height = y2 - y1;
/* Check how many of the left lines are uniform/transparent. */
rect.x = 0;
rect.y = y1;
rect.width = 1;
rect.height = height;
abort = FALSE;
for (x = x1; x < x2 && !abort; x++)
{
pixel_region_get_col (&PR, x, y1, height, buffer, 1);
rect.x = x;
gegl_buffer_get (buffer, 1.0, &rect, NULL, buf, GEGL_AUTO_ROWSTRIDE);
for (y = 0; y < height && !abort; y++)
abort = !(colors_equal_func) (bgcolor, buffer + y * bytes, bytes);
abort = !(colors_equal_func) (bgcolor, buf + y * bytes, bytes);
}
x1 = x - 1;
/* Check how many of the right lines are uniform/transparent. */
rect.x = 0;
rect.y = y1;
rect.width = 1;
rect.height = height;
abort = FALSE;
for (x = x2; x > x1 && !abort; x--)
{
pixel_region_get_col (&PR, x-1, y1, height, buffer, 1);
rect.x = x - 1;
gegl_buffer_get (buffer, 1.0, &rect, NULL, buf, GEGL_AUTO_ROWSTRIDE);
for (y = 0; y < height && !abort; y++)
abort = !(colors_equal_func) (bgcolor, buffer + y * bytes, bytes);
abort = !(colors_equal_func) (bgcolor, buf + y * bytes, bytes);
}
x2 = x + 1;
@ -434,7 +456,7 @@ gimp_image_crop_auto_shrink (GimpImage *image,
retval = TRUE;
FINISH:
g_free (buffer);
g_free (buf);
gimp_unset_busy (image->gimp);
return retval;