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nautilus-file.c: Add transparent padding to thumbnails

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Pad thumbnails with transparency such that the resulting image is
square. This ensures that the pixmap has room for emblems even when the
image has an extreme aspect ratio.

Closes #912
This commit is contained in:
Chris Billington 2019-08-03 20:56:21 +00:00 committed by António Fernandes
parent 8a51db7953
commit 26d33d74f4
1 changed files with 23 additions and 1 deletions
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24
src/nautilus-file.c
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@ -5173,6 +5173,9 @@ nautilus_file_get_thumbnail_icon (NautilusFile *file,
}
else
{
GdkPixbuf *bg_pixbuf;
int bg_size;
pixbuf = gdk_pixbuf_scale_simple (file->details->thumbnail,
MAX (w * thumb_scale, 1),
MAX (h * thumb_scale, 1),
@ -5198,13 +5201,32 @@ nautilus_file_get_thumbnail_icon (NautilusFile *file,
}
}
/* Copy to a transparent square pixbuf, aligned to the bottom edge */
bg_size = MAX (gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf));
bg_pixbuf = gdk_pixbuf_new (gdk_pixbuf_get_colorspace (pixbuf),
TRUE,
gdk_pixbuf_get_bits_per_sample (pixbuf),
bg_size,
bg_size);
gdk_pixbuf_fill (bg_pixbuf, 0);
gdk_pixbuf_copy_area (pixbuf,
0,
0,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
bg_pixbuf,
(bg_size - gdk_pixbuf_get_width (pixbuf)) / 2,
(bg_size - gdk_pixbuf_get_height (pixbuf)));
g_clear_object (&pixbuf);
pixbuf = bg_pixbuf;
g_clear_object (&file->details->scaled_thumbnail);
file->details->scaled_thumbnail = pixbuf;
file->details->thumbnail_scale = thumb_scale;
}
DEBUG ("Returning thumbnailed image, at size %d %d",
(int) (w * thumb_scale), (int) (h * thumb_scale));
gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf));
}
else if (file->details->thumbnail_path == NULL &&
file->details->can_read &&