// [SL] Stretches a patch to fill the full-screen while maintaining a 4:3
// aspect ratio. Pillarboxing is used in widescreen resolutions.
void DCanvas::DrawPatchFullScreen(const patch_t* patch) const
{
Clear(0, 0, width, height, 0);
if (isProtectedRes())
{
DrawPatch(patch, 0, 0);
}
else if (width * 3 > height * 4)
{
// widescreen resolution - draw pic in 4:3 ratio in center of screen
int picwidth = 4 * height / 3;
int picheight = height;
DrawPatchStretched(patch, (width - picwidth) / 2, 0, picwidth, picheight);
}
else
{
// 4:3 resolution - draw pic to the entire screen
DrawPatchStretched(patch, 0, 0, width, height);
}
}
// Draw a patch scaled to a specific width and height, preserving aspect ratio.
void DrawPatchScaled(const int x, const int y,
unsigned short w, unsigned short h,
const float scale,
const x_align_t x_align, const y_align_t y_align,
const x_align_t x_origin, const y_align_t y_origin,
const patch_t* patch, const bool force_opaque,
const bool use_patch_offsets) {
// Calculate aspect ratios of patch and destination.
float patch_aspect = patch->width() / (float)patch->height();
float dest_aspect = w / (float)h;
if (patch_aspect < dest_aspect) {
// Destination is wider than patch. Keep height, calculate width.
w = (patch->width() * h) / patch->height();
} else if (patch_aspect > dest_aspect) {
// Destination is taller than patch. Keep width, calculate height.
h = (patch->height() * w) / patch->width();
}
// Call the 'stretched' drawer with our new dest. width and height.
DrawPatchStretched(x, y, w, h, scale, x_align, y_align, x_origin, y_origin,
patch, force_opaque, use_patch_offsets);
}
