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| author | Gerd Hoffmann <kraxel@redhat.com> | 2013-03-07 15:23:48 +0100 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2013-04-16 09:03:47 +0200 |
| commit | b762795257353760e8c69e144188ef7ab2b84c37 (patch) | |
| tree | b8650dbe5a338dda14da88569aa0a428e4b2470a | |
| parent | 867c538f988d326f6b447acde867e5de5a5014a0 (diff) | |
| download | qemu-b762795257353760e8c69e144188ef7ab2b84c37.zip qemu-b762795257353760e8c69e144188ef7ab2b84c37.tar.gz qemu-b762795257353760e8c69e144188ef7ab2b84c37.tar.bz2 | |
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>
| -rw-r--r-- | include/ui/qemu-pixman.h | 7 | ||||
| -rw-r--r-- | ui/qemu-pixman.c | 43 |
2 files changed, 50 insertions, 0 deletions
diff --git a/include/ui/qemu-pixman.h b/include/ui/qemu-pixman.h index b0f09b5..f012ec5 100644 --- a/include/ui/qemu-pixman.h +++ b/include/ui/qemu-pixman.h @@ -44,5 +44,12 @@ pixman_image_t *qemu_pixman_mirror_create(pixman_format_code_t format, void qemu_pixman_image_unref(pixman_image_t *image); pixman_color_t qemu_pixman_color(PixelFormat *pf, uint32_t color); +pixman_image_t *qemu_pixman_glyph_from_vgafont(int height, const uint8_t *font, + unsigned int ch); +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); #endif /* QEMU_PIXMAN_H */ 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); +} |