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CComponentsItem: fix possible artefacts if fb box is smaller the radius

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If box height/2 is smaller than corner radius it is possible
we have artefacts after killed or hided fb box. This effect only I have seen
with full hd resolution, in hd ready mode it was ok.
Sideeffects with this changes I have not seen, but I can't exclude. Must be watched.
This commit is contained in:
Thilo Graf
2017-04-07 21:44:32 +02:00
parent c9152beada
commit bad5f02c06
1 changed files with 12 additions and 8 deletions
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20
src/gui/components/cc_item.cpp
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@@ -89,11 +89,16 @@ void CComponentsItem::paintInit(bool do_save_bg)
//set current needed corner main box radius
int box_rad = corner_type ? corner_rad : 0;
//and ensure max main box radius < dimensions
if (2*box_rad > dy)
box_rad -= max(0, 2*box_rad-dy);
if (2*box_rad > dx)
box_rad -= max(0, 2*box_rad-dy);
//and ensure max main box radius < dimensions, avoids possible fb artefacts on screen
int box_rad2 = box_rad/2;
if(box_rad2 > dy || box_rad2 > dx){
int tmp_rad = box_rad;
if (box_rad2 > dx)
tmp_rad = (box_rad2-dx)*2;
if (box_rad2 > dy)
tmp_rad = (box_rad2-dy)*2;
box_rad = tmp_rad;
}
//Workaround: ensure radius values >= 0, framebuffer methode paintBoxRel() gets confused
box_rad = max(box_rad, 0);
@@ -113,13 +118,12 @@ void CComponentsItem::paintInit(bool do_save_bg)
int sh_cdy = box_rad+sw+th; //height
//adapt shadow corner dimensions if body dimensions are too small, use an offset if required
int /*sh_cdx_size_offset,*/ sh_cdy_size_offset = 0;
int sh_cdx_size_offset, sh_cdy_size_offset = 0;
if (sh_cdy*2 > dy)
sh_cdy_size_offset = sh_cdy*2-dy;
#if 0
if (sh_cdx*2 > dx)
sh_cdx_size_offset = sh_cdx*2-dx;
#endif
//handle shadow positions
//...corner bottom right
int sh_cbr_x = ix+dx-sh_cdx+sw;