diff options
Diffstat (limited to 'viewport.c')
| -rw-r--r-- | viewport.c | 29 |
1 files changed, 21 insertions, 8 deletions
@@ -13,11 +13,9 @@ viewport_draw(Viewport *v, Image *dst) { Point scale; - scale.x = Dx(dst->r)/Dx(v->r); - scale.y = Dy(dst->r)/Dy(v->r); - /* no downsampling support yet */ - assert(scale.x > 0 && scale.y > 0); + scale.x = max(min(v->bx.x, Dx(dst->r)/Dx(v->r)), 1); + scale.y = max(min(v->by.y, Dy(dst->r)/Dy(v->r)), 1); if(scale.x > 1 || scale.y > 1) v->fbctl->upscaledraw(v->fbctl, dst, scale); @@ -30,11 +28,9 @@ viewport_memdraw(Viewport *v, Memimage *dst) { Point scale; - scale.x = Dx(dst->r)/Dx(v->r); - scale.y = Dy(dst->r)/Dy(v->r); - /* no downsampling support yet */ - assert(scale.x > 0 && scale.y > 0); + scale.x = max(min(v->bx.x, Dx(dst->r)/Dx(v->r)), 1); + scale.y = max(min(v->by.y, Dy(dst->r)/Dy(v->r)), 1); if(scale.x > 1 || scale.y > 1) v->fbctl->upscalememdraw(v->fbctl, dst, scale); @@ -42,6 +38,21 @@ viewport_memdraw(Viewport *v, Memimage *dst) v->fbctl->memdraw(v->fbctl, dst); } +static void +viewport_setscale(Viewport *v, double sx, double sy) +{ + assert(sx > 0 && sy > 0); + + v->bx.x = sx; + v->by.y = sy; +} + +static void +viewport_setscalefilter(Viewport *v, int f) +{ + v->fbctl->upfilter = f; +} + static Framebuf * viewport_getfb(Viewport *v) { @@ -61,6 +72,8 @@ mkviewport(Rectangle r) v->r = r; v->draw = viewport_draw; v->memdraw = viewport_memdraw; + v->setscale = viewport_setscale; + v->setscalefilter = viewport_setscalefilter; v->getfb = viewport_getfb; return v; } |