diff options
author | Daniel Friesel <derf@finalrewind.org> | 2021-11-02 22:01:42 +0100 |
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committer | Daniel Friesel <derf@finalrewind.org> | 2021-11-02 22:01:42 +0100 |
commit | cb2e1564ec96ecea4ec08f332542415ca5a47a31 (patch) | |
tree | 2e3c2736c6652c8c11016ea0580f1866a0dc2e25 /src/os | |
parent | df860f2b0899779d3ca3b25d6da0e1dd06188818 (diff) |
framebuffer: add OutputStream support with pixelfont
Diffstat (limited to 'src/os')
-rw-r--r-- | src/os/object/framebuffer.cc | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/os/object/framebuffer.cc b/src/os/object/framebuffer.cc index ad128dc..7b3fe0d 100644 --- a/src/os/object/framebuffer.cc +++ b/src/os/object/framebuffer.cc @@ -67,4 +67,33 @@ void Framebuffer::drawAt(unsigned int x, unsigned int y, unsigned int w, unsigne } } +void Framebuffer::put(char c) +{ + if (font == 0) { + return; + } + if (c == '\n') { + fontX = 0; + fontY += 8; + return; + } + if ((c < 32) || (c > 126)) { + c = '?'; + } + glyph_t glyph = font[c - 32]; + const unsigned char glyph_w = glyph[0]; + + if (fontX + glyph_w + 1 >= width) { + put('\n'); + } + if (fontY >= height) { + return; + } + for (unsigned char i = 0; i < glyph_w; i++) { + data[(height/8) * (fontX + i) + fontY/8] = glyph[i+1]; + } + data[(height/8) * (fontX + glyph_w + 1) + fontY/8] = 0; + fontX += glyph_w + 2; +} + Framebuffer fb(framebuffer); |