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#ifndef __bitmap_funcs_h__
#define __bitmap_funcs_h__
// This should make bitmap manipulations much easier...
class MyBitmap
{
public:
typedef unsigned long COLOR32;
static inline COLOR32 RGBA(unsigned char r, unsigned char g, unsigned char b, unsigned char a = 0xff)
{
return (a << 24) | (r << 16) | (g << 8) | b;
};
private:
HBITMAP hBmpSave, hBmp;
HDC dcBmp;
COLOR32 *bits;
COLOR32 *bitsSave;
int width, height;
void allocate(int w, int h);
void free();
void premultipleChannels();
public:
MyBitmap();
MyBitmap(int w, int h);
MyBitmap(wchar_t *fn);
~MyBitmap();
bool loadFromFile(wchar_t *fn);
int getWidth() { return width; }
int getHeight() { return height; }
HDC getDC() { return dcBmp; }
HBITMAP getBitmap() { return hBmp; }
void makeOpaque();
void saveAlpha(int x = 0, int y = 0, int w = 0, int h = 0);
void restoreAlpha(int x = 0, int y = 0, int w = 0, int h = 0);
void DrawText(wchar_t *str, int x, int y);
inline COLOR32 *getBits() { return bits; }
inline COLOR32 *getRow(int row) { return bits + row * width; }
inline COLOR32 *operator[] (int row) { return bits + row * width; }
COLOR32 rgba(COLOR32 r, COLOR32 g, COLOR32 b, COLOR32 a)
{
return ((a & 0xff) << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff);
}
COLOR32 getr(COLOR32 c)
{
return (c >> 16) & 0xff;
}
COLOR32 getg(COLOR32 c)
{
return (c >> 8) & 0xff;
}
COLOR32 getb(COLOR32 c)
{
return c & 0xff;
}
COLOR32 geta(COLOR32 c)
{
return (c >> 24) & 0xff;
}
};
#endif // __bitmap_funcs_h__
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