diff options
Diffstat (limited to 'src/Fl_Bitmap.cxx')
| -rw-r--r-- | src/Fl_Bitmap.cxx | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/Fl_Bitmap.cxx b/src/Fl_Bitmap.cxx index 6915377e3..27526a04a 100644 --- a/src/Fl_Bitmap.cxx +++ b/src/Fl_Bitmap.cxx @@ -117,6 +117,37 @@ void Fl_Bitmap::draw(int XP, int YP, int WP, int HP, int cx, int cy) { fl_graphics_driver->draw(this, XP, YP, WP, HP, cx, cy); } +#if defined(WIN32) +// TODO: move this code into the GDI driver in a sensible way +// 'fl_create_bitmap()' - Create a 1-bit bitmap for drawing... +static Fl_Bitmask fl_create_bitmap(int w, int h, const uchar *data) { + // we need to pad the lines out to words & swap the bits + // in each byte. + int w1 = (w + 7) / 8; + int w2 = ((w + 15) / 16) * 2; + uchar* newarray = new uchar[w2*h]; + const uchar* src = data; + uchar* dest = newarray; + Fl_Bitmask bm; + static uchar reverse[16] = /* Bit reversal lookup table */ + { 0x00, 0x88, 0x44, 0xcc, 0x22, 0xaa, 0x66, 0xee, + 0x11, 0x99, 0x55, 0xdd, 0x33, 0xbb, 0x77, 0xff }; + + for (int y = 0; y < h; y++) { + for (int n = 0; n < w1; n++, src++) + *dest++ = (uchar)((reverse[*src & 0x0f] & 0xf0) | + (reverse[(*src >> 4) & 0x0f] & 0x0f)); + dest += w2 - w1; + } + + bm = CreateBitmap(w, h, 1, 1, newarray); + + delete[] newarray; + + return bm; +} +#endif + int Fl_Bitmap::start(int XP, int YP, int WP, int HP, int &cx, int &cy, int &X, int &Y, int &W, int &H) { |