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libframe: auto scale tick for retina

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R=rsc
http://codereview.appspot.com/6850102
This commit is contained in:
Russ Cox 2012-11-25 23:48:19 -05:00
parent ffaaaf9dae
commit cc9547960e
3 changed files with 24 additions and 10 deletions
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11
src/libframe/frinit.c
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@ -31,11 +31,14 @@ frinittick(Frame *f)
Image *b;
Font *ft;
if(f->cols[BACK] == nil || f->display == nil)
return;
f->tickscale = scalesize(f->display, 1);
b = f->display->screenimage;
ft = f->font;
if(f->tick)
freeimage(f->tick);
f->tick = allocimage(f->display, Rect(0, 0, FRTICKW, ft->height), b->chan, 0, DWhite);
f->tick = allocimage(f->display, Rect(0, 0, f->tickscale*FRTICKW, ft->height), b->chan, 0, DWhite);
if(f->tick == nil)
return;
if(f->tickback)
@ -49,10 +52,10 @@ frinittick(Frame *f)
/* background color */
draw(f->tick, f->tick->r, f->cols[BACK], nil, ZP);
/* vertical line */
draw(f->tick, Rect(FRTICKW/2, 0, FRTICKW/2+1, ft->height), f->display->black, nil, ZP);
draw(f->tick, Rect(f->tickscale*(FRTICKW/2), 0, f->tickscale*(FRTICKW/2+1), ft->height), f->display->black, nil, ZP);
/* box on each end */
draw(f->tick, Rect(0, 0, FRTICKW, FRTICKW), f->cols[TEXT], nil, ZP);
draw(f->tick, Rect(0, ft->height-FRTICKW, FRTICKW, ft->height), f->cols[TEXT], nil, ZP);
draw(f->tick, Rect(0, 0, f->tickscale*FRTICKW, f->tickscale*FRTICKW), f->cols[TEXT], nil, ZP);
draw(f->tick, Rect(0, ft->height-f->tickscale*FRTICKW, f->tickscale*FRTICKW, ft->height), f->cols[TEXT], nil, ZP);
}
void