/*
   FreeRDP: A Remote Desktop Protocol client.
   32bpp Internal Buffer Routines

   Copyright 2010 Marc-Andre Moreau <marcandre.moreau@gmail.com>

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <freerdp/freerdp.h>

#include "gdi.h"
#include "color.h"
#include "gdi_pen.h"
#include "gdi_bitmap.h"
#include "gdi_region.h"
#include "gdi_clipping.h"
#include "gdi_drawing.h"

#include "gdi_32bpp.h"

uint32 gdi_get_color_32bpp(HGDI_DC hdc, GDI_COLOR color)
{
	uint32 color32;
	uint8 a, r, g, b;

	a = 0xFF;
	GetRGB32(r, g, b, color);

	if (hdc->invert)
	{
		color32 = ABGR32(a, r, g, b);
	}
	else
	{
		color32 = ARGB32(a, r, g, b);
	}

	return color32;
}

int FillRect_32bpp(HGDI_DC hdc, HGDI_RECT rect, HGDI_BRUSH hbr)
{
	int x, y;
	uint32 *dstp;
	uint32 color32;
	int nXDest, nYDest;
	int nWidth, nHeight;

	gdi_RectToCRgn(rect, &nXDest, &nYDest, &nWidth, &nHeight);
	
	if (gdi_ClipCoords(hdc, &nXDest, &nYDest, &nWidth, &nHeight, NULL, NULL) == 0)
		return 0;

	color32 = gdi_get_color_32bpp(hdc, hbr->color);

	for (y = 0; y < nHeight; y++)
	{
		dstp = (uint32*) gdi_get_bitmap_pointer(hdc, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				*dstp = color32;
				dstp++;
			}
		}
	}

	gdi_InvalidateRegion(hdc, nXDest, nYDest, nWidth, nHeight);
	return 0;
}

static int BitBlt_BLACKNESS_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight)
{
	if (hdcDest->alpha)
	{
		int x, y;
		uint8 *dstp;

		for (y = 0; y < nHeight; y++)
		{
			dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

			if (dstp != 0)
			{
				for (x = 0; x < nWidth; x++)
				{
					*dstp = 0;
					dstp++;

					*dstp = 0;
					dstp++;

					*dstp = 0;
					dstp++;

					*dstp = 0xFF;
					dstp++;
				}
			}
		}
	}
	else
	{
		int y;
		uint8 *dstp;

		for (y = 0; y < nHeight; y++)
		{
			dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

			if (dstp != 0)
				memset(dstp, 0, nWidth * hdcDest->bytesPerPixel);
		}
	}

	return 0;
}

static int BitBlt_WHITENESS_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight)
{
	int y;
	uint8 *dstp;
	
	for (y = 0; y < nHeight; y++)
	{
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
			memset(dstp, 0xFF, nWidth * hdcDest->bytesPerPixel);
	}

	return 0;
}

static int BitBlt_SRCCOPY_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int y;
	uint8 *srcp;
	uint8 *dstp;

	if ((hdcDest->selectedObject != hdcSrc->selectedObject) ||
	    gdi_CopyOverlap(nXDest, nYDest, nWidth, nHeight, nXSrc, nYSrc) == 0)
	{
		for (y = 0; y < nHeight; y++)
		{
			srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
			dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

			if (srcp != 0 && dstp != 0)
			{
				gdi_copy_mem(dstp, srcp, nWidth * hdcDest->bytesPerPixel);
			}
		}

		return 0;
	}
	
	if (nYSrc < nYDest)
	{
		/* copy down (bottom to top) */
		for (y = nHeight - 1; y >= 0; y--)
		{
			srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
			dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

			if (srcp != 0 && dstp != 0)
			{
				gdi_copy_mem(dstp, srcp, nWidth * hdcDest->bytesPerPixel);
			}
		}
	}
	else if (nYSrc > nYDest || nXSrc > nXDest)
	{
		/* copy up or left (top top bottom) */
		for (y = 0; y < nHeight; y++)
		{
			srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
			dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

			if (srcp != 0 && dstp != 0)
			{
				gdi_copy_mem(dstp, srcp, nWidth * hdcDest->bytesPerPixel);
			}
		}
	}
	else
	{
		/* copy straight right */
		for (y = 0; y < nHeight; y++)
		{
			srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
			dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

			if (srcp != 0 && dstp != 0)
			{
				gdi_copy_memb(dstp, srcp, nWidth * hdcDest->bytesPerPixel);
			}
		}
	}
	
	return 0;
}

static int BitBlt_NOTSRCCOPY_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int x, y;
	uint8 *srcp;
	uint8 *dstp;
	
	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				*dstp = ~(*srcp);
				srcp++;
				dstp++;
					
				*dstp = ~(*srcp);
				srcp++;
				dstp++;

				*dstp = ~(*srcp);
				srcp += 2;
				dstp += 2;
			}
		}
	}

	return 0;
}

static int BitBlt_DSTINVERT_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight)
{
	int x, y;
	uint8 *dstp;
		
	for (y = 0; y < nHeight; y++)
	{
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				*dstp = ~(*dstp);
				dstp++;
					
				*dstp = ~(*dstp);
				dstp++;

				*dstp = ~(*dstp);
				dstp += 2;
			}
		}
	}

	return 0;
}

static int BitBlt_SRCERASE_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int x, y;
	uint8 *srcp;
	uint8 *dstp;
		
	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				*dstp = *srcp & ~(*dstp);
				srcp++;
				dstp++;
					
				*dstp = *srcp & ~(*dstp);
				srcp++;
				dstp++;

				*dstp = *srcp & ~(*dstp);
				srcp += 2;
				dstp += 2;
			}
		}
	}

	return 0;
}

static int BitBlt_NOTSRCERASE_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int x, y;
	uint8 *srcp;
	uint8 *dstp;
		
	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				*dstp = ~(*srcp) & ~(*dstp);
				srcp++;
				dstp++;
					
				*dstp = ~(*srcp) & ~(*dstp);
				srcp++;
				dstp++;

				*dstp = ~(*srcp) & ~(*dstp);
				srcp += 2;
				dstp += 2;
			}
		}
	}

	return 0;
}

static int BitBlt_SRCINVERT_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int x, y;
	uint8 *srcp;
	uint8 *dstp;
		
	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				*dstp ^= *srcp;
				srcp++;
				dstp++;
					
				*dstp ^= *srcp;
				srcp++;
				dstp++;

				*dstp ^= *srcp;
				srcp += 2;
				dstp += 2;
			}
		}
	}

	return 0;
}

static int BitBlt_SRCAND_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int x, y;
	uint8 *srcp;
	uint8 *dstp;
		
	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				*dstp &= *srcp;
				srcp++;
				dstp++;
					
				*dstp &= *srcp;
				srcp++;
				dstp++;

				*dstp &= *srcp;
				srcp += 2;
				dstp += 2;
			}
		}
	}

	return 0;
}

static int BitBlt_SRCPAINT_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int x, y;
	uint8 *srcp;
	uint8 *dstp;
		
	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				*dstp |= *srcp;
				srcp++;
				dstp++;
					
				*dstp |= *srcp;
				srcp++;
				dstp++;

				*dstp |= *srcp;
				srcp += 2;
				dstp += 2;
			}
		}
	}

	return 0;
}

static int BitBlt_DSPDxax_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{	
	int x, y;
	uint8 *srcp;
	uint8 *dstp;
	uint8 *patp;
	uint32 color32;
	HGDI_BITMAP hSrcBmp;

	/* D = (S & P) | (~S & D) */
	/* DSPDxax, used to draw glyphs */

	color32 = gdi_get_color_32bpp(hdcDest, hdcDest->textColor);

	hSrcBmp = (HGDI_BITMAP) hdcSrc->selectedObject;
	srcp = hSrcBmp->data;

	if (hdcSrc->bytesPerPixel != 1)
	{
		printf("BitBlt_DSPDxax expects 1 bpp, unimplemented for %d\n", hdcSrc->bytesPerPixel);
		return 0;
	}
	
	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				patp = (uint8*) &color32;

				*dstp = (*srcp & *patp) | (~(*srcp) & *dstp);
				dstp++;
				patp++;

				*dstp = (*srcp & *patp) | (~(*srcp) & *dstp);
				dstp++;
				patp++;

				*dstp = (*srcp & *patp) | (~(*srcp) & *dstp);
				dstp += 2;
				srcp++;
			}
		}
	}

	return 0;
}

static int BitBlt_SPna_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int x, y;
	uint8 *srcp;
	uint8 *dstp;
	uint8 *patp;
	
	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);		

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				patp = gdi_get_brush_pointer(hdcDest, x, y);
				
				*dstp = *srcp & ~(*patp);
				patp++;
				srcp++;
				dstp++;
					
				*dstp = *srcp & ~(*patp);
				patp++;
				srcp++;
				dstp++;

				*dstp = *srcp & ~(*patp);
				srcp += 2;
				dstp += 2;
			}
		}
	}
	
	return 0;
}

static int BitBlt_DSna_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int x, y;
	uint8 *srcp;
	uint8 *dstp;

	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				*dstp = ~(*srcp) & (*dstp);
				srcp++;
				dstp++;

				*dstp = ~(*srcp) & (*dstp);
				srcp++;
				dstp++;

				*dstp = ~(*srcp) & (*dstp);
				srcp += 2;
				dstp += 2;
			}
		}
	}

	return 0;
}


static int BitBlt_MERGECOPY_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int x, y;
	uint8 *srcp;
	uint8 *dstp;
	uint8 *patp;
	
	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				patp = gdi_get_brush_pointer(hdcDest, x, y);
				
				*dstp = *srcp & *patp;
				patp++;
				srcp++;
				dstp++;
					
				*dstp = *srcp & *patp;
				patp++;
				srcp++;
				dstp++;

				*dstp = *srcp & *patp;
				dstp += 2;
				srcp += 2;
			}
		}
	}
	
	return 0;
}

static int BitBlt_MERGEPAINT_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int x, y;
	uint8 *srcp;
	uint8 *dstp;
	
	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{				
				*dstp = ~(*srcp) | *dstp;
				srcp++;
				dstp++;
					
				*dstp = ~(*srcp) | *dstp;
				srcp++;
				dstp++;

				*dstp = ~(*srcp) | *dstp;
				dstp += 2;
				srcp += 2;
			}
		}
	}
	
	return 0;
}

static int BitBlt_PATCOPY_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight)
{
	int x, y;
	uint8 *dstp;
	uint8 *patp;
	uint32 color32;
	uint32 *dstp32;

	if(hdcDest->brush->style == GDI_BS_SOLID)
	{
		color32 = gdi_get_color_32bpp(hdcDest, hdcDest->brush->color);

		for (y = 0; y < nHeight; y++)
		{
			dstp32 = (uint32*) gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

			if (dstp32 != 0)
			{
				for (x = 0; x < nWidth; x++)
				{
					*dstp32 = color32;
					dstp32++;
				}
			}
		}
	}
	else
	{
		for (y = 0; y < nHeight; y++)
		{
			dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

			if (dstp != 0)
			{
				for (x = 0; x < nWidth; x++)
				{
					patp = gdi_get_brush_pointer(hdcDest, x, y);
				
					*dstp = *patp;
					patp++;
					dstp++;
					
					*dstp = *patp;
					patp++;
					dstp++;

					*dstp = *patp;
					dstp += 2;
				}
			}
		}
	}
	
	return 0;
}

static int BitBlt_PATINVERT_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight)
{
	int x, y;
	uint8 *dstp;
	uint8 *patp;
	uint32 color32;
	uint32 *dstp32;
		
	if(hdcDest->brush->style == GDI_BS_SOLID)
	{
		color32 = gdi_get_color_32bpp(hdcDest, hdcDest->brush->color);

		for (y = 0; y < nHeight; y++)
		{
			dstp32 = (uint32*) gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

			if (dstp32 != 0)
			{
				for (x = 0; x < nWidth; x++)
				{
					*dstp32 ^= color32;
					dstp32++;
				}
			}
		}
	}
	else
	{
		for (y = 0; y < nHeight; y++)
		{
			dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

			if (dstp != 0)
			{
				for (x = 0; x < nWidth; x++)
				{
					patp = gdi_get_brush_pointer(hdcDest, x, y);
					
					*dstp = *patp ^ *dstp;
					patp++;
					dstp++;

					*dstp = *patp ^ *dstp;
					patp++;
					dstp++;

					*dstp = *patp ^ *dstp;
					dstp += 2;
				}
			}
		}
	}
	
	return 0;
}

static int BitBlt_PATPAINT_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc)
{
	int x, y;
	uint8 *srcp;
	uint8 *dstp;
	uint8 *patp;
	
	for (y = 0; y < nHeight; y++)
	{
		srcp = gdi_get_bitmap_pointer(hdcSrc, nXSrc, nYSrc + y);
		dstp = gdi_get_bitmap_pointer(hdcDest, nXDest, nYDest + y);

		if (dstp != 0)
		{
			for (x = 0; x < nWidth; x++)
			{
				patp = gdi_get_brush_pointer(hdcDest, x, y);
				
				*dstp = *dstp | (*patp | ~(*srcp));
				patp++;
				srcp++;
				dstp++;
					
				*dstp = *dstp | (*patp | ~(*srcp));
				patp++;
				srcp++;
				dstp++;

				*dstp = *dstp | (*patp | ~(*srcp));
				dstp += 2;
				srcp += 2;
			}
		}
	}
	
	return 0;
}

int BitBlt_32bpp(HGDI_DC hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, HGDI_DC hdcSrc, int nXSrc, int nYSrc, int rop)
{
	if (hdcSrc != NULL)
	{
		if (gdi_ClipCoords(hdcDest, &nXDest, &nYDest, &nWidth, &nHeight, &nXSrc, &nYSrc) == 0)
			return 0;
	}
	else
	{
		if (gdi_ClipCoords(hdcDest, &nXDest, &nYDest, &nWidth, &nHeight, NULL, NULL) == 0)
			return 0;
	}
	
	gdi_InvalidateRegion(hdcDest, nXDest, nYDest, nWidth, nHeight);
	
	switch (rop)
	{
		case GDI_BLACKNESS:
			return BitBlt_BLACKNESS_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight);
			break;

		case GDI_WHITENESS:
			return BitBlt_WHITENESS_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight);
			break;

		case GDI_SRCCOPY:
			return BitBlt_SRCCOPY_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;

		case GDI_SPna:
			return BitBlt_SPna_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;

		case GDI_DSna:
			return BitBlt_DSna_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;

		case GDI_DSPDxax:
			return BitBlt_DSPDxax_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;
			
		case GDI_NOTSRCCOPY:
			return BitBlt_NOTSRCCOPY_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;

		case GDI_DSTINVERT:
			return BitBlt_DSTINVERT_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight);
			break;

		case GDI_SRCERASE:
			return BitBlt_SRCERASE_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;

		case GDI_NOTSRCERASE:
			return BitBlt_NOTSRCERASE_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;

		case GDI_SRCINVERT:
			return BitBlt_SRCINVERT_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;

		case GDI_SRCAND:
			return BitBlt_SRCAND_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;

		case GDI_SRCPAINT:
			return BitBlt_SRCPAINT_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;

		case GDI_MERGECOPY:
			return BitBlt_MERGECOPY_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;

		case GDI_MERGEPAINT:
			return BitBlt_MERGEPAINT_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;

		case GDI_PATCOPY:
			return BitBlt_PATCOPY_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight);
			break;

		case GDI_PATINVERT:
			return BitBlt_PATINVERT_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight);
			break;

		case GDI_PATPAINT:
			return BitBlt_PATPAINT_32bpp(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc);
			break;
	}
	
	printf("BitBlt: unknown rop: 0x%08X\n", rop);
	return 1;
}

int PatBlt_32bpp(HGDI_DC hdc, int nXLeft, int nYLeft, int nWidth, int nHeight, int rop)
{
	if (gdi_ClipCoords(hdc, &nXLeft, &nYLeft, &nWidth, &nHeight, NULL, NULL) == 0)
		return 0;
	
	gdi_InvalidateRegion(hdc, nXLeft, nYLeft, nWidth, nHeight);

	switch (rop)
	{
		case GDI_PATCOPY:
			return BitBlt_PATCOPY_32bpp(hdc, nXLeft, nYLeft, nWidth, nHeight);
			break;

		case GDI_PATINVERT:
			return BitBlt_PATINVERT_32bpp(hdc, nXLeft, nYLeft, nWidth, nHeight);
			break;
			
		case GDI_DSTINVERT:
			return BitBlt_DSTINVERT_32bpp(hdc, nXLeft, nYLeft, nWidth, nHeight);
			break;

		case GDI_BLACKNESS:
			return BitBlt_BLACKNESS_32bpp(hdc, nXLeft, nYLeft, nWidth, nHeight);
			break;

		case GDI_WHITENESS:
			return BitBlt_WHITENESS_32bpp(hdc, nXLeft, nYLeft, nWidth, nHeight);
			break;
	}
	
	printf("PatBlt: unknown rop: 0x%08X", rop);
	return 1;
}

void SetPixel_BLACK_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = 0 */
	*pixel = 0;
}

void SetPixel_NOTMERGEPEN_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = ~(D | P) */
	*pixel = ~(*pixel | *pen);
}

void SetPixel_MASKNOTPEN_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = D & ~P */
	*pixel &= ~(*pen);
}

void SetPixel_NOTCOPYPEN_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = ~P */
	*pixel = ~(*pen);
}

void SetPixel_MASKPENNOT_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = P & ~D */
	*pixel = *pen & ~*pixel;
}

void SetPixel_NOT_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = ~D */
	*pixel = ~(*pixel);
}

void SetPixel_XORPEN_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = D ^ P */
	*pixel = *pixel ^ *pen;
}

void SetPixel_NOTMASKPEN_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = ~(D & P) */
	*pixel = ~(*pixel & *pen);
}

void SetPixel_MASKPEN_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = D & P */
	*pixel &= *pen;
}

void SetPixel_NOTXORPEN_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = ~(D ^ P) */
	*pixel = ~(*pixel ^ *pen);
}

void SetPixel_NOP_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = D */
}

void SetPixel_MERGENOTPEN_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = D | ~P */
	*pixel |= ~(*pen);
}

void SetPixel_COPYPEN_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = P */
	*pixel = *pen;
}

void SetPixel_MERGEPENNOT_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = P | ~D */
	*pixel = *pen | ~(*pixel);
}

void SetPixel_MERGEPEN_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = P | D */
	*pixel |= *pen;
}

void SetPixel_WHITE_32bpp(uint32 *pixel, uint32 *pen)
{
	/* D = 1 */
	*pixel = 0xFFFFFF;
}

pSetPixel32_ROP2 SetPixel32_ROP2_[32] =
{
	SetPixel_BLACK_32bpp,
	SetPixel_NOTMERGEPEN_32bpp,
	SetPixel_MASKNOTPEN_32bpp,
	SetPixel_NOTCOPYPEN_32bpp,
	SetPixel_MASKPENNOT_32bpp,
	SetPixel_NOT_32bpp,
	SetPixel_XORPEN_32bpp,
	SetPixel_NOTMASKPEN_32bpp,
	SetPixel_MASKPEN_32bpp,
	SetPixel_NOTXORPEN_32bpp,
	SetPixel_NOP_32bpp,
	SetPixel_MERGENOTPEN_32bpp,
	SetPixel_COPYPEN_32bpp,
	SetPixel_MERGEPENNOT_32bpp,
	SetPixel_MERGEPEN_32bpp,
	SetPixel_WHITE_32bpp
};

int LineTo_32bpp(HGDI_DC hdc, int nXEnd, int nYEnd)
{
	int x, y;
	int x1, y1;
	int x2, y2;
	int e, e2;
	int dx, dy;
	int sx, sy;
	HGDI_BITMAP bmp;
	int bx1, by1;
	int bx2, by2;

	int irop2;
	uint32 pen;
	uint32 *pixel;

	x1 = hdc->pen->posX;
	y1 = hdc->pen->posY;
	x2 = nXEnd;
	y2 = nYEnd;

	dx = (x1 > x2) ? x1 - x2 : x2 - x1;
	dy = (y1 > y2) ? y1 - y2 : y2 - y1;

	sx = (x1 < x2) ? 1 : -1;
	sy = (y1 < y2) ? 1 : -1;

	e = dx - dy;

	x = x1;
	y = y1;

	irop2 = gdi_GetROP2(hdc) - 1;
	bmp = (HGDI_BITMAP) hdc->selectedObject;

	if (hdc->clip->null)
	{
		bx1 = (x1 < x2) ? x1 : x2;
		by1 = (y1 < y2) ? y1 : y2;
		bx2 = (x1 > x2) ? x1 : x2;
		by2 = (y1 > y2) ? y1 : y2;
	}
	else
	{
		bx1 = hdc->clip->x;
		by1 = hdc->clip->y;
		bx2 = bx1 + hdc->clip->w - 1;
		by2 = by1 + hdc->clip->h - 1;
	}

	pen = gdi_GetPenColor_32bpp(hdc->pen);

	while (1)
	{
		if (!(x == x2 && y == y2))
		{
			if ((x >= bx1 && x <= bx2) && (y >= by1 && y <= by2))
			{
				pixel = gdi_GetPointer_32bpp(bmp, x, y);
				SetPixel32_ROP2_[irop2](pixel, &pen);
			}
		}
		else
		{
			break;
		}

		e2 = 2 * e;

		if (e2 > -dy)
		{
			e -= dy;
			x += sx;
		}

		if (e2 < dx)
		{
			e += dx;
			y += sy;
		}
	}

	return 1;
}