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/**
* 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 * FreeRDPGetBytesPerPixel(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. msdn{dd183396}
*
* @param x dest x-coordinate
* @param y dest y-coordinate
* @return color pointer
*/
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 * FreeRDPGetBytesPerPixel(hBmpBrush->format));
return p;
}
break;
default:
break;
}
p = (BYTE*)&(hdcBrush->textColor);
return p;
}
#endif /* FREERDP_LIB_GDI_CORE_H */
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