Amebis/wxWidgets
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Simplify overlapping regions check

Browse Source
This commit is contained in:
Paul Cornett
2017-06-18 22:47:15 -07:00
parent 59acf5ac27
commit a08812c499
1 changed files with 2 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
src/gtk/dc.cpp
View File

@@ -154,35 +154,9 @@ bool wxGTKCairoDCImpl::DoStretchBlit(int xdest, int ydest, int dstWidth, int dst
if ( cr == cr_src ) if ( cr == cr_src )
{ {
// Check if destination and source regions overlap. // Check if destination and source regions overlap.
bool regOverlap;
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 10, 0)
if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 10, 0) )
{
cairo_rectangle_int_t rdst;
rdst.x = xdest;
rdst.y = ydest;
rdst.width = dstWidth;
rdst.height = dstHeight;
cairo_region_t* regdst = cairo_region_create_rectangle(&rdst);
cairo_rectangle_int_t rsrc;
rsrc.x = xsrc;
rsrc.y = ysrc;
rsrc.width = srcWidth;
rsrc.height = srcHeight;
cairo_region_overlap_t ov = cairo_region_contains_rectangle(regdst, &rsrc);
cairo_region_destroy(regdst);
regOverlap = (ov != CAIRO_REGION_OVERLAP_OUT);
}
else
#endif // Cairo 1.10
{
wxRect rdst(xdest, ydest, dstWidth, dstHeight);
wxRect rsrc(xsrc, ysrc, srcWidth, srcHeight);
regOverlap = rdst.Intersects(rsrc);
}
// If necessary, copy source surface to the temporary one. // If necessary, copy source surface to the temporary one.
if ( regOverlap ) if (wxRect(xdest, ydest, dstWidth, dstHeight)
.Intersects(wxRect(xsrc, ysrc, srcWidth, srcHeight)))
{ {
const int w = cairo_image_surface_get_width(surfaceSrc); const int w = cairo_image_surface_get_width(surfaceSrc);
const int h = cairo_image_surface_get_height(surfaceSrc); const int h = cairo_image_surface_get_height(surfaceSrc);