/**

 * 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 */