diff options
Diffstat (limited to 'src/sp-pattern.cpp')
| -rw-r--r-- | src/sp-pattern.cpp | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/sp-pattern.cpp b/src/sp-pattern.cpp index 77fa9034d..9d6296a0d 100644 --- a/src/sp-pattern.cpp +++ b/src/sp-pattern.cpp @@ -670,10 +670,20 @@ cairo_pattern_t *SPPattern::pattern_new(cairo_t *base_ct, Geom::OptRect const &b dc.paint(opacity); // apply opacity } - cairo_pattern_t *cp = cairo_pattern_create_for_surface(pattern_surface.raw()); // Apply transformation to user space. Also compensate for oversampling. - ink_cairo_pattern_set_matrix(cp, ps2user.inverse() * pattern_surface.drawingTransform()); + Geom::Affine raw_transform = ps2user.inverse() * pattern_surface.drawingTransform(); + + // Cairo doesn't like large values of x0 and y0. We can replace x0 and y0 by equivalent + // values close to zero (since one tile on a grid is the same as another it doesn't + // matter which tile is used as the base tile). + int w = one_tile[Geom::X].extent(); + int h = one_tile[Geom::Y].extent(); + int m = raw_transform[4] / w; + int n = raw_transform[5] / h; + raw_transform *= Geom::Translate( -m*w, -n*h ); + cairo_pattern_t *cp = cairo_pattern_create_for_surface(pattern_surface.raw()); + ink_cairo_pattern_set_matrix(cp, raw_transform); cairo_pattern_set_extend(cp, CAIRO_EXTEND_REPEAT); return cp; |