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/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
Copyright (C) 2009 Red Hat, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "common.h"
#include "red_pixmap_sw.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;
};
RedPixmapSw::RedPixmapSw(int width, int height, RedDrawable::Format format,
bool top_bottom, RedWindow *win)
: RedPixmap(width, height, format, top_bottom)
{
DWORD *pixel_format;
ASSERT(format == RedDrawable::ARGB32 || format == RedDrawable::RGB32
|| format == RedDrawable::RGB16_555 || format == RedDrawable::RGB16_565
|| format == RedDrawable::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_OPENGL
// -----------------------------------------------------------------------------
// 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 = RedDrawable::format_to_bpp(format);
if (format == RedDrawable::RGB16_565) {
bitmap_info.inf.bmiHeader.biCompression = BI_BITFIELDS;
} else {
bitmap_info.inf.bmiHeader.biCompression = BI_RGB;
}
switch (format) {
case RedDrawable::A1:
bitmap_info.inf.bmiColors[0].rgbRed = 0;
bitmap_info.inf.bmiColors[0].rgbGreen = 0;
bitmap_info.inf.bmiColors[0].rgbBlue = 0;
#ifndef __MINGW32__
// inf.bmiColors is [1] in mingw/include/wingdi.h
bitmap_info.inf.bmiColors[1].rgbRed = 0xff;
bitmap_info.inf.bmiColors[1].rgbGreen = 0xff;
bitmap_info.inf.bmiColors[1].rgbBlue = 0xff;
#endif
break;
case RedDrawable::RGB16_565:
pixel_format = (DWORD *)bitmap_info.inf.bmiColors;
pixel_format[0] = 0xf800;
pixel_format[1] = 0x07e0;
pixel_format[2] = 0x001f;
break;
case RedDrawable::ARGB32:
case RedDrawable::RGB32:
case RedDrawable::RGB16_555:
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_OPENGL
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();
}
RedPixmapSw::~RedPixmapSw()
{
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);
}
}
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