/**

 * FreeRDP: A Remote Desktop Protocol Implementation

 * GDI Library

 *

 * Copyright 2010-2011 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.

 */

#ifndef FREERDP_LIB_GDI_CORE_H

#define FREERDP_LIB_GDI_CORE_H

#include "graphics.h"

#include "brush.h"

#include <freerdp/api.h>

FREERDP_LOCAL BOOL gdi_bitmap_update(rdpContext* context, const BITMAP_UPDATE* bitmapUpdate);

FREERDP_LOCAL gdiBitmap* gdi_bitmap_new_ex(rdpGdi* gdi, int width, int height, int bpp, BYTE* data);

FREERDP_LOCAL void gdi_bitmap_free_ex(gdiBitmap* gdi_bmp);

static INLINE BYTE* gdi_get_bitmap_pointer(HGDI_DC hdcBmp, INT32 x, INT32 y)

{

	BYTE* p;

	HGDI_BITMAP hBmp = (HGDI_BITMAP)hdcBmp->selectedObject;

	if ((x >= 0) && (y >= 0) && (x < hBmp->width) && (y < hBmp->height))

	{

		p = hBmp->data + (y * hBmp->scanline) + (x * GetBytesPerPixel(hdcBmp->format));

		return p;

	}

	else

	{

		WLog_ERR(FREERDP_TAG("gdi"),

		         "gdi_get_bitmap_pointer: requesting invalid pointer: (%" PRIu32 ",%" PRIu32

		         ") in %" PRIu32 "x%" PRIu32 "",

		         x, y, hBmp->width, hBmp->height);

		return 0;

	}

}

/**

 * Get current color in brush bitmap according to dest coordinates.\n

 * @msdn{dd183396}

 * @param x dest x-coordinate

 * @param y dest y-coordinate

 * @return color

 */

static INLINE BYTE* gdi_get_brush_pointer(HGDI_DC hdcBrush, UINT32 x, UINT32 y)

{

	BYTE* p;

	UINT32 brushStyle = gdi_GetBrushStyle(hdcBrush);

	switch (brushStyle)

	{

		case GDI_BS_PATTERN:

		case GDI_BS_HATCHED:

		{

			HGDI_BITMAP hBmpBrush = hdcBrush->brush->pattern;

			/* According to @msdn{dd183396}, the system always positions a brush bitmap

			 * at the brush origin and copy across the client area.

			 * Calculate the offset of the mapped pixel in the brush bitmap according to

			 * brush origin and dest coordinates */

			x = (x + hBmpBrush->width - (hdcBrush->brush->nXOrg % hBmpBrush->width)) %

			    hBmpBrush->width;

			y = (y + hBmpBrush->height - (hdcBrush->brush->nYOrg % hBmpBrush->height)) %

			    hBmpBrush->height;

			p = hBmpBrush->data + (y * hBmpBrush->scanline) +

			    (x * GetBytesPerPixel(hBmpBrush->format));

			return p;

		}

		break;

		default:

			break;

	}

	p = (BYTE*)&(hdcBrush->textColor);

	return p;

}

#endif /* FREERDP_LIB_GDI_CORE_H */