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Bug 754221 - Possible preview widget bug 

gimp_drawable_get_sub_preview(): both the preview buffer's scale
factor and the src coordinates in the drawable were calculated
wrongly. Found by Massimo.
This commit is contained in:
Michael Natterer 2015-09-06 17:22:16 +02:00
parent 5a2757c6ec
commit e491bf8e09
1 changed files with 8 additions and 3 deletions
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11
app/core/gimpdrawable-preview.c
View File

@ -97,6 +97,8 @@ gimp_drawable_get_sub_preview (GimpDrawable *drawable,
GeglBuffer *buffer;
GimpTempBuf *preview;
gdouble scale;
gint scaled_x;
gint scaled_y;
g_return_val_if_fail (GIMP_IS_DRAWABLE (drawable), NULL);
g_return_val_if_fail (src_x >= 0, NULL);
@ -121,11 +123,14 @@ gimp_drawable_get_sub_preview (GimpDrawable *drawable,
preview = gimp_temp_buf_new (dest_width, dest_height,
gimp_drawable_get_preview_format (drawable));
scale = MIN ((gdouble) dest_width / (gdouble) gegl_buffer_get_width (buffer),
(gdouble) dest_height / (gdouble) gegl_buffer_get_height (buffer));
scale = MIN ((gdouble) dest_width / (gdouble) src_width,
(gdouble) dest_height / (gdouble) src_height);
scaled_x = RINT ((gdouble) src_x * scale);
scaled_y = RINT ((gdouble) src_y * scale);
gegl_buffer_get (buffer,
GEGL_RECTANGLE (src_x, src_y, dest_width, dest_height),
GEGL_RECTANGLE (scaled_x, scaled_y, dest_width, dest_height),
scale,
gimp_temp_buf_get_format (preview),
gimp_temp_buf_get_data (preview),