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app: Scale pattern preview to show full image

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Currently, patterns are loaded as-is - if the full pattern is larger
than the preview, its cut off and you only see the left corner.
In those cases, the pattern is scaled using gegl_buffer_get ()'s scale
parameter.
This commit is contained in:
Alx Sa
2023-05-17 03:38:29 +00:00
parent a8d30578cd
commit e1e30c6f72
1 changed files with 44 additions and 12 deletions
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56
app/core/gimppattern.c
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@@ -146,26 +146,58 @@ gimp_pattern_get_new_preview (GimpViewable *viewable,
GimpPattern *pattern = GIMP_PATTERN (viewable);
GimpTempBuf *temp_buf;
GeglBuffer *src_buffer;
GeglBuffer *dest_buffer;
gint true_width;
gint true_height;
gint copy_width;
gint copy_height;
copy_width = MIN (width, gimp_temp_buf_get_width (pattern->mask));
copy_height = MIN (height, gimp_temp_buf_get_height (pattern->mask));
true_width = gimp_temp_buf_get_width (pattern->mask);
true_height = gimp_temp_buf_get_height (pattern->mask);
copy_width = MIN (width, true_width);
copy_height = MIN (height, true_height);
temp_buf = gimp_temp_buf_new (copy_width, copy_height,
gimp_temp_buf_get_format (pattern->mask));
src_buffer = gimp_temp_buf_create_buffer (pattern->mask);
src_buffer = gimp_temp_buf_create_buffer (pattern->mask);
dest_buffer = gimp_temp_buf_create_buffer (temp_buf);
if (true_width > width || true_height > height)
{
gdouble ratio_x = (gdouble) width / (gdouble) true_width;
gdouble ratio_y = (gdouble) height / (gdouble) true_height;
gdouble scale = MIN (ratio_x, ratio_y);
gdouble aspect = (gdouble) true_width / (gdouble) true_height;
gimp_gegl_buffer_copy (src_buffer,
GEGL_RECTANGLE (0, 0, copy_width, copy_height),
GEGL_ABYSS_NONE,
dest_buffer, GEGL_RECTANGLE (0, 0, 0, 0));
/* Adjusting dimensions for non-square patterns */
if (true_width > true_height)
copy_height = copy_width / aspect;
else if (true_width < true_height)
copy_width = copy_height * aspect;
temp_buf = gimp_temp_buf_new (copy_width, copy_height,
gimp_temp_buf_get_format (pattern->mask));
gegl_buffer_get (src_buffer,
GEGL_RECTANGLE (0, 0, copy_width, copy_height),
scale, gimp_temp_buf_get_format (temp_buf),
gimp_temp_buf_get_data (temp_buf),
GEGL_AUTO_ROWSTRIDE, GEGL_ABYSS_CLAMP);
}
else
{
GeglBuffer *dest_buffer;
temp_buf = gimp_temp_buf_new (copy_width, copy_height,
gimp_temp_buf_get_format (pattern->mask));
dest_buffer = gimp_temp_buf_create_buffer (temp_buf);
gimp_gegl_buffer_copy (src_buffer,
GEGL_RECTANGLE (0, 0, copy_width, copy_height),
GEGL_ABYSS_NONE, dest_buffer,
GEGL_RECTANGLE (0, 0, 0, 0));
g_object_unref (dest_buffer);
}
g_object_unref (src_buffer);
g_object_unref (dest_buffer);
return temp_buf;
}