[cairo] [PATCH 2/3] image: Proper handling of clip in _composite_boxes()

[Taekyun Kim]

We cannot assume that given boxes are already clipped within clip
region even when clip_region contains single rectangle. So if we
have single rectangle clip_region, we have to manually clip boxes
within the clip rectangle so that we can make clip region to NULL.

And if clip_region is not NULL (means multiple clip rectangles),
we should handle this. But previous code did not handle this
correctly. This patch fixes this too.
---
 src/cairo-image-surface.c |   51 +++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 49 insertions(+), 2 deletions(-)

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