[cairo] strange bug(?) in cairo2 1.12.16-0ubuntu2
nipatriknilsson at gmail.com
Sun Feb 16 15:19:56 CET 2014
I'm rendering to an A1 surface. First I fill the surface (with
cairo_fill_preserv) and then make a frame (cairo_stroke). It is later
going to be used as a mask.
The stroke is always drawn regardless of the shape, but cairo_fill (or
cairo_fill_preserv) only fills the surface if it is non-rectangular.
This doesn't work in package "cairo2 1.12.16-0ubuntu2", but it worked in
previous versions of cairo. The package in Debian 7 works cairo_fill.
Is there a bug introduced?
//Points to be drawn is in a list called areascreen.
//These lines are just for a workaround if the shape is rectangular
GdkPoint *first = areascreen.GetHead ();
if ( first != NULL )
memcpy ( &point, first, sizeof ( GdkPoint ) );
point.x ++; //some strange bug in cairo
point.y ++; //some strange bug in cairo
areascreen.AddTail ( &point );
cairo_set_operator ( cr, op );
cairo_new_path ( cr );
GdkPoint *p = areascreen.GetHead ();
while ( p != 0 )
if ( p == areascreen.GetHead () )
cairo_move_to ( cr, p->x, p->y );
cairo_line_to ( cr, p->x, p->y );
p = areascreen.GetNext ( p );
cairo_close_path ( cr );
cairo_set_source_rgba ( cr, rfill, gfill, bfill, afill );
cairo_fill_preserve ( cr );
cairo_set_line_width ( cr, 1 );
cairo_set_source_rgba ( cr, rframe, gframe, bframe, aframe );
cairo_stroke ( cr );
Any help is welcome!
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