diff options
Diffstat (limited to 'graphics')
-rw-r--r-- | graphics/surface-keycolored.cpp | 67 | ||||
-rw-r--r-- | graphics/surface-keycolored.h | 40 |
2 files changed, 107 insertions, 0 deletions
diff --git a/graphics/surface-keycolored.cpp b/graphics/surface-keycolored.cpp new file mode 100644 index 0000000000..64ddf63395 --- /dev/null +++ b/graphics/surface-keycolored.cpp @@ -0,0 +1,67 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + */ +#include "graphics/surface-keycolored.h" + +namespace Graphics { + +void SurfaceKeyColored::blit(Surface *surf_src, int16 x, int16 y, OverlayColor transparent) { + + if (bytesPerPixel != sizeof(OverlayColor) || surf_src->bytesPerPixel != sizeof(OverlayColor)) return ; + + const OverlayColor *src = (const OverlayColor*)surf_src->pixels; + int blitW = surf_src->w; + int blitH = surf_src->h; + + // clip co-ordinates + if (x < 0) { + blitW += x; + src -= x; + x = 0; + } + if (y < 0) { + blitH += y; + src -= y * surf_src->w; + y = 0; + } + if (blitW > w - x) blitW = w - x; + if (blitH > h - y) blitH = h - y; + if (blitW <= 0 || blitH <= 0) + return; + + OverlayColor *dst = (OverlayColor*) getBasePtr(x, y); + int dstAdd = w - blitW; + int srcAdd = surf_src->w - blitW; + + for (int i = 0; i < blitH; ++i) { + for (int j = 0; j < blitW; ++j, ++dst, ++src) { + OverlayColor col = *src; + if (col != transparent) + *dst = col; + } + dst += dstAdd; + src += srcAdd; + } +} + +} // end of namespace Graphics diff --git a/graphics/surface-keycolored.h b/graphics/surface-keycolored.h new file mode 100644 index 0000000000..8877852328 --- /dev/null +++ b/graphics/surface-keycolored.h @@ -0,0 +1,40 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + */ + +#ifndef GRAPHICS_SURFACE_KEYCOLORED_H +#define GRAPHICS_SURFACE_KEYCOLORED_H + +#include "graphics/surface.h" + +namespace Graphics { + +struct SurfaceKeyColored : Surface { + + void blit(Surface *surf_src, int16 x, int16 y, OverlayColor transparent); +}; + + +} // end of namespace Graphics + +#endif |