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Diffstat (limited to 'client/windows/red_pixmap_cairo.cpp')
-rw-r--r-- | client/windows/red_pixmap_cairo.cpp | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/client/windows/red_pixmap_cairo.cpp b/client/windows/red_pixmap_cairo.cpp new file mode 100644 index 00000000..0b3073c4 --- /dev/null +++ b/client/windows/red_pixmap_cairo.cpp @@ -0,0 +1,101 @@ +/* + Copyright (C) 2009 Red Hat, Inc. + + 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, see <http://www.gnu.org/licenses/>. +*/ + +#include "common.h" +#include "red_pixmap_cairo.h" +#include "red_pixmap.h" +#include "debug.h" +#include "utils.h" +#include "pixels_source_p.h" +#include "platform_utils.h" + +struct RedPixmap_p { + PixelsSource_p pixels_source_p; + HBITMAP prev_bitmap; +}; + +static inline int format_to_bpp(RedPixmap::Format format) +{ + return ((format == RedPixmap::A1) ? 1 : 32); +} + +RedPixmapCairo::RedPixmapCairo(int width, int height, RedPixmap::Format format, bool top_bottom, + rgb32_t* pallet, RedWindow *win) + : RedPixmap(width, height, format, top_bottom, pallet) +{ + ASSERT(format == RedPixmap::ARGB32 || format == RedPixmap::RGB32 || format == RedPixmap::A1); + ASSERT(sizeof(RedPixmap_p) <= PIXELES_SOURCE_OPAQUE_SIZE); + + struct { + BITMAPINFO inf; + RGBQUAD palette[255]; + } bitmap_info; + + memset(&bitmap_info, 0, sizeof(bitmap_info)); + bitmap_info.inf.bmiHeader.biSize = sizeof(bitmap_info.inf.bmiHeader); + bitmap_info.inf.bmiHeader.biWidth = _width; + bitmap_info.inf.bmiHeader.biHeight = top_bottom ? -_height : _height; + +/*#ifdef USE_OGL + // ----------------------------------------------------------------------------- + // ensure valid access to additional stride. + // apparently glReadPixels validate ((ptr of last line) + GL_PACK_ROW_LENGTH + 1). + // seen on "ATI Radeon HD 2400 PRO" "2.0.6479 Release" + if (top_bottom) { + bitmap_info.inf.bmiHeader.biHeight--; + } else { + bitmap_info.inf.bmiHeader.biHeight++; + } + //------------------------------------------------------------------------------ +#endif*/ + + bitmap_info.inf.bmiHeader.biPlanes = 1; + bitmap_info.inf.bmiHeader.biBitCount = format_to_bpp(format); + bitmap_info.inf.bmiHeader.biCompression = BI_RGB; + switch (format) { + case RedPixmap::A1: + for (int i = 0; i < (1 << format_to_bpp(format)); i++) { + bitmap_info.inf.bmiColors[i].rgbRed = rgb32_get_red(pallet[i]); + bitmap_info.inf.bmiColors[i].rgbGreen = rgb32_get_green(pallet[i]); + bitmap_info.inf.bmiColors[i].rgbBlue = rgb32_get_blue(pallet[i]); + } + break; + } + AutoDC dc(create_compatible_dc()); + AutoGDIObject bitmap(CreateDIBSection(dc.get(), &bitmap_info.inf, 0, + (VOID **)&_data, NULL, 0)); + if (!bitmap.valid()) { + THROW("create compatible bitmap failed"); + } +/*#ifdef USE_OGL + SetWindowOrgEx(dc.get(), 0, -1, NULL); // compensate for one pad line +#endif*/ + ((RedPixmap_p*)get_opaque())->prev_bitmap = (HBITMAP)SelectObject(dc.get(), bitmap.release()); + ((RedPixmap_p*)get_opaque())->pixels_source_p.dc = dc.release(); +} + +RedPixmapCairo::~RedPixmapCairo() +{ + HDC dc = ((RedPixmap_p*)get_opaque())->pixels_source_p.dc; + if (dc) { + HBITMAP prev_bitmap = ((RedPixmap_p*)get_opaque())->prev_bitmap; + HBITMAP bitmap = (HBITMAP)SelectObject(dc, prev_bitmap); + DeleteObject(bitmap); + DeleteDC(dc); + } +} + |