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authorGerd Hoffmann <kraxel@redhat.com>2013-03-07 15:23:48 +0100
committerGerd Hoffmann <kraxel@redhat.com>2013-04-16 09:03:47 +0200
commitb762795257353760e8c69e144188ef7ab2b84c37 (patch)
treeb8650dbe5a338dda14da88569aa0a428e4b2470a /ui
parent867c538f988d326f6b447acde867e5de5a5014a0 (diff)
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pixman: render vgafont glyphs into pixman images
Add helper functions to create pixman mask images for glyphs and to render these glyphs into a pixman image. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'ui')
-rw-r--r--ui/qemu-pixman.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/ui/qemu-pixman.c b/ui/qemu-pixman.c
index be551e0..254bd8c 100644
--- a/ui/qemu-pixman.c
+++ b/ui/qemu-pixman.c
@@ -90,3 +90,46 @@ pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color)
c.alpha = ((color & pf->amask) >> pf->ashift) << (16 - pf->abits);
return c;
}
+
+pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font,
+ unsigned int ch)
+{
+ pixman_image_t *glyph;
+ uint8_t *data;
+ bool bit;
+ int x, y;
+
+ glyph = pixman_image_create_bits(PIXMAN_a8, 8, height,
+ NULL, 0);
+ data = (uint8_t *)pixman_image_get_data(glyph);
+
+ font += height * ch;
+ for (y = 0; y < height; y++, font++) {
+ for (x = 0; x < 8; x++, data++) {
+ bit = (*font) & (1 << (7-x));
+ *data = bit ? 0xff : 0x00;
+ }
+ }
+ return glyph;
+}
+
+void qemu_pixman_glyph_render(pixman_image_t *glyph,
+ pixman_image_t *surface,
+ pixman_color_t *fgcol,
+ pixman_color_t *bgcol,
+ int x, int y, int cw, int ch)
+{
+ pixman_image_t *ifg = pixman_image_create_solid_fill(fgcol);
+ pixman_image_t *ibg = pixman_image_create_solid_fill(bgcol);
+
+ pixman_image_composite(PIXMAN_OP_SRC, ibg, NULL, surface,
+ 0, 0, 0, 0,
+ cw * x, ch * y,
+ cw, ch);
+ pixman_image_composite(PIXMAN_OP_OVER, ifg, glyph, surface,
+ 0, 0, 0, 0,
+ cw * x, ch * y,
+ cw, ch);
+ pixman_image_unref(ifg);
+ pixman_image_unref(ibg);
+}