diff options
| -rw-r--r-- | draw/draw_device.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/draw/draw_device.c b/draw/draw_device.c index 3c705369..c6f55224 100644 --- a/draw/draw_device.c +++ b/draw/draw_device.c @@ -1866,8 +1866,13 @@ fz_draw_end_tile(fz_device *devp) fz_intersect_irect(&area, fz_irect_from_rect(&scissor, &scissor_tmp)); /* FIXME: area is a bbox, so FP not appropriate here */ - x0 = floorf(area.x0 / xstep); - y0 = floorf(area.y0 / ystep); + /* In PDF files xstep/ystep can be smaller than view (the area of a + * single tile) (see fts_15_1506.pdf for an example). This means that + * we have to bias the left hand/bottom edge calculations by the + * difference between the step and the width/height of the tile. */ + /* state[0].scissor = view, transformed by ctm */ + x0 = floorf((area.x0 + xstep - state[0].scissor.x1 + state[0].scissor.x0) / xstep); + y0 = floorf((area.y0 + ystep - state[0].scissor.y1 + state[0].scissor.y0) / ystep); x1 = ceilf(area.x1 / xstep); y1 = ceilf(area.y1 / ystep); |