Mercurial > MadButterfly
diff src/redraw_man.c @ 270:cd6af7da32c9
Fix the problem that clean_canvas() can not clean canvas cleanly.
- For some unknown reasons, cairo_paint() can not clean painted
graphics cleanly.
- Use cairo_rectangle() and cairo_fill() to replace cairo_paint().
| author | Thinker K.F. Li <thinker@branda.to> |
|---|---|
| date | Sun, 25 Jan 2009 16:07:43 +0800 |
| parents | 29acbd8a0dd0 |
| children | 248a40d51473 |
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--- a/src/redraw_man.c Sun Jan 25 00:20:34 2009 +0800 +++ b/src/redraw_man.c Sun Jan 25 16:07:43 2009 +0800 @@ -1028,13 +1028,22 @@ } #ifndef UNITTEST -static void clean_canvas(cairo_t *cr) { +static void clean_canvas(cairo_t *cr, co_aix w, co_aix h) { /*! \todo clean to background color. */ cairo_set_source_rgb(cr, 1, 1, 1); +#if 1 + /* For some unknown reasons, cairo_paint() can not erease + * painted graphic cleanly. So, cairo_fill() are used to + * replace it. + */ + cairo_rectangle(cr, 0, 0, w, h); + cairo_fill(cr); +#else cairo_paint(cr); +#endif } -static void clean_canvas_black(cairo_t *cr) { +static void clean_canvas_black(cairo_t *cr, co_aix w, co_aix h) { /*! \todo clean to background color. */ cairo_set_source_rgba(cr, 0, 0, 0, 0); cairo_paint(cr); @@ -1064,10 +1073,10 @@ cairo_paint(rdman->backend); } #else /* UNITTEST */ -static void clean_canvas(cairo_t *cr) { +static void clean_canvas(cairo_t *cr, co_aix w, co_aix h) { } -static void clean_canvas_black(cairo_t *cr) { +static void clean_canvas_black(cairo_t *cr, co_aix w, co_aix h) { } static void reset_clip(redraw_man_t *rdman) { @@ -1142,7 +1151,7 @@ if(dirty && coord->flags & COF_OWN_CANVAS) { update_canvas_2_parent(rdman, coord); - clean_canvas_black(coord->canvas); + clean_canvas_black(coord->canvas, rdman->w, rdman->h); } return dirty; @@ -1204,7 +1213,7 @@ /*! \brief Draw shapes in preorder of coord tree and support opacity * rules. */ - clean_canvas(rdman->cr); + clean_canvas(rdman->cr, rdman->w, rdman->h); draw_shapes_in_areas(rdman, n_dirty_areas, dirty_areas); copy_cr_2_backend(rdman, rdman->dirty_areas.num, rdman->dirty_areas.ds);