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/*
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_gdi.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);
}
RedPixmapGdi::RedPixmapGdi(int width, int height, RedPixmap::Format format, bool top_bottom,
rgb32_t* pallet)
: 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;
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");
}
memset(_data, 1, 1);
((RedPixmap_p*)get_opaque())->prev_bitmap = (HBITMAP)SelectObject(dc.get(), bitmap.release());
((RedPixmap_p*)get_opaque())->pixels_source_p.dc = dc.release();
}
HDC RedPixmapGdi::get_dc()
{
return ((RedPixmap_p*)get_opaque())->pixels_source_p.dc;
}
void *RedPixmapGdi::get_memptr()
{
return _data;
}
RedPixmapGdi::~RedPixmapGdi()
{
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);
}
}
Mutex& RedPixmapGdi::get_mutex()
{
RedPixmap_p* p_data = (RedPixmap_p*)get_opaque();
return *p_data->pixels_source_p._mutex;
}
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