bool BitmapImpl::drawBitmap( const GenericBitmap &rSource, int xSrc, int ySrc,
int xDest, int yDest, int width, int height )
{
int srcWidth = rSource.getWidth();
uint32_t *pSrc = (uint32_t*)rSource.getData() + ySrc * srcWidth + xSrc;
if( !pSrc )
{
return false;
}
if( xSrc < 0 || xSrc + width > srcWidth ||
ySrc < 0 || ySrc + height > rSource.getHeight() )
{
msg_Warn( getIntf(), "drawBitmap: source rect too small, ignoring" );
return false;
}
if( xDest < 0 || xDest + width > m_width ||
yDest < 0 || yDest + height > m_height )
{
msg_Warn( getIntf(), "drawBitmap: dest rect too small, ignoring" );
return false;
}
uint32_t *pDest = (uint32_t*)m_pData + yDest * m_width + xDest ;
for( int y = 0; y < height; y++ )
{
memcpy( pDest, pSrc, 4 * width );
pSrc += srcWidth;
pDest += m_width;
}
return true;
}
void BitmapImpl::drawBitmap( const GenericBitmap &rSource, int xSrc, int ySrc,
int xDest, int yDest, int width, int height )
{
int srcWidth = rSource.getWidth();
uint32_t *pSrc = (uint32_t*)rSource.getData() + ySrc * srcWidth + xSrc;
uint32_t *pDest = (uint32_t*)m_pData + yDest * m_width + xDest ;
for( int y = 0; y < height; y++ )
{
memcpy( pDest, pSrc, 4 * width );
pSrc += srcWidth;
pDest += m_width;
}
}
void X11Graphics::drawBitmap( const GenericBitmap &rBitmap, int xSrc,
int ySrc, int xDest, int yDest, int width,
int height, bool blend )
{
// Get the bitmap size if necessary
if( width == -1 )
{
width = rBitmap.getWidth();
}
else if( width > rBitmap.getWidth() )
{
msg_Dbg( getIntf(), "bitmap width too small (%i)", rBitmap.getWidth() );
width = rBitmap.getWidth();
}
if( height == -1 )
{
height = rBitmap.getHeight();
}
else if( height > rBitmap.getHeight() )
{
msg_Dbg( getIntf(), "bitmap height too small (%i)", rBitmap.getHeight()
);
height = rBitmap.getHeight();
}
// Nothing to draw if width or height is null
if( width == 0 || height == 0 )
{
return;
}
// Safety check for debugging purpose
if( xDest + width > m_width || yDest + height > m_height )
{
msg_Dbg( getIntf(), "bitmap too large" );
return;
}
// Get a buffer on the image data
uint8_t *pBmpData = rBitmap.getData();
if( pBmpData == NULL )
{
// Nothing to draw
return;
}
// Get the image from the pixmap
XImage *pImage = XGetImage( XDISPLAY, m_pixmap, xDest, yDest, width,
height, AllPlanes, ZPixmap );
if( pImage == NULL )
{
msg_Dbg( getIntf(), "XGetImage returned NULL" );
return;
}
char *pData = pImage->data;
// Get the padding of this image
int pad = pImage->bitmap_pad >> 3;
int shift = ( pad - ( (width * XPIXELSIZE) % pad ) ) % pad;
// Mask for transparency
Region mask = XCreateRegion();
// Get a pointer on the right X11Display::makePixel method
X11Display::MakePixelFunc_t makePixelFunc = ( blend ?
m_rDisplay.getBlendPixel() : m_rDisplay.getPutPixel() );
// Skip the first lines of the image
pBmpData += 4 * ySrc * rBitmap.getWidth();
// Copy the bitmap on the image and compute the mask
for( int y = 0; y < height; y++ )
{
// Skip uninteresting bytes at the beginning of the line
pBmpData += 4 * xSrc;
// Flag to say whether the previous pixel on the line was visible
bool wasVisible = false;
// Beginning of the current visible segment on the line
int visibleSegmentStart = 0;
for( int x = 0; x < width; x++ )
{
uint8_t b = *(pBmpData++);
uint8_t g = *(pBmpData++);
uint8_t r = *(pBmpData++);
uint8_t a = *(pBmpData++);
// Draw the pixel
(m_rDisplay.*makePixelFunc)( (uint8_t*)pData, r, g, b, a );
pData += XPIXELSIZE;
if( a > 0 )
{
// Pixel is visible
if( ! wasVisible )
{
// Beginning of a visible segment
visibleSegmentStart = x;
}
wasVisible = true;
}
else
{
// Pixel is transparent
if( wasVisible )
{
// End of a visible segment: add it to the mask
addHSegmentInRegion( mask, visibleSegmentStart, x, y );
}
wasVisible = false;
}
}
if( wasVisible )
{
// End of a visible segment: add it to the mask
addHSegmentInRegion( mask, visibleSegmentStart, width, y );
}
pData += shift;
// Skip uninteresting bytes at the end of the line
pBmpData += 4 * (rBitmap.getWidth() - width - xSrc);
}
// Apply the mask to the graphics context
XOffsetRegion( mask, xDest, yDest );
XSetRegion( XDISPLAY, m_gc, mask );
// Copy the image on the pixmap
XPutImage( XDISPLAY, m_pixmap, m_gc, pImage, 0, 0, xDest, yDest, width,
height);
XDestroyImage( pImage );
// Add the bitmap mask to the global graphics mask
Region newMask = XCreateRegion();
XUnionRegion( mask, m_mask, newMask );
XDestroyRegion( m_mask );
m_mask = newMask;
XDestroyRegion( mask );
}
void Win32Graphics::drawBitmap( const GenericBitmap &rBitmap,
int xSrc, int ySrc, int xDest, int yDest,
int width, int height, bool blend )
{
(void)blend;
// check and adapt to source if needed
if( !checkBoundaries( 0, 0, rBitmap.getWidth(), rBitmap.getHeight(),
xSrc, ySrc, width, height ) )
{
msg_Err( getIntf(), "empty source! pls, debug your skin" );
return;
}
// check destination
if( !checkBoundaries( 0, 0, m_width, m_height,
xDest, yDest, width, height ) )
{
msg_Err( getIntf(), "out of reach destination! pls, debug your skin" );
return;
}
// Get a buffer on the image data
uint8_t *pBmpData = rBitmap.getData();
if( pBmpData == NULL )
{
// Nothing to draw
return;
}
void *pBits; // pointer to DIB section
// Fill a BITMAPINFO structure
BITMAPINFO bmpInfo;
memset( &bmpInfo, 0, sizeof( bmpInfo ) );
bmpInfo.bmiHeader.biSize = sizeof( BITMAPINFOHEADER );
bmpInfo.bmiHeader.biWidth = width;
bmpInfo.bmiHeader.biHeight = -height;
bmpInfo.bmiHeader.biPlanes = 1;
bmpInfo.bmiHeader.biBitCount = 32;
bmpInfo.bmiHeader.biCompression = BI_RGB;
bmpInfo.bmiHeader.biSizeImage = width * height * 4;
// Create a DIB (Device Independent Bitmap) and associate it with
// a temporary DC
HDC hDC = CreateCompatibleDC( m_hDC );
HBITMAP hBmp = CreateDIBSection( hDC, &bmpInfo, DIB_RGB_COLORS,
&pBits, NULL, 0 );
SelectObject( hDC, hBmp );
// Mask for transparency
HRGN mask = CreateRectRgn( 0, 0, 0, 0 );
// Skip the first lines of the image
pBmpData += 4 * ySrc * rBitmap.getWidth();
// Copy the bitmap on the image and compute the mask
for( int y = 0; y < height; y++ )
{
// Skip uninteresting bytes at the beginning of the line
pBmpData += 4 * xSrc;
// Flag to say whether the previous pixel on the line was visible
bool wasVisible = false;
// Beginning of the current visible segment on the line
int visibleSegmentStart = 0;
for( int x = 0; x < width; x++ )
{
uint8_t b = *(pBmpData++);
uint8_t g = *(pBmpData++);
uint8_t r = *(pBmpData++);
uint8_t a = *(pBmpData++);
// Draw the pixel
((UINT32 *)pBits)[x + y * width] =
(a << 24) | (r << 16) | (g << 8) | b;
if( a > 0 )
{
// Pixel is visible
if( ! wasVisible )
{
// Beginning of a visible segment
visibleSegmentStart = x;
}
wasVisible = true;
}
else
{
// Pixel is transparent
if( wasVisible )
{
// End of a visible segment: add it to the mask
addSegmentInRegion( mask, visibleSegmentStart, x, y );
}
wasVisible = false;
}
}
if( wasVisible )
{
// End of a visible segment: add it to the mask
addSegmentInRegion( mask, visibleSegmentStart, width, y );
}
// Skip uninteresting bytes at the end of the line
pBmpData += 4 * (rBitmap.getWidth() - width - xSrc);
}
// Apply the mask to the internal DC
OffsetRgn( mask, xDest, yDest );
SelectClipRgn( m_hDC, mask );
BLENDFUNCTION bf; // structure for alpha blending
bf.BlendOp = AC_SRC_OVER;
bf.BlendFlags = 0;
bf.SourceConstantAlpha = 0xff; // don't use constant alpha
bf.AlphaFormat = AC_SRC_ALPHA;
// Blend the image onto the internal DC
if( !AlphaBlend( m_hDC, xDest, yDest, width, height, hDC, 0, 0,
width, height, bf ) )
{
msg_Err( getIntf(), "AlphaBlend() failed" );
}
// Add the bitmap mask to the global graphics mask
CombineRgn( m_mask, m_mask, mask, RGN_OR );
// Do cleanup
DeleteObject( hBmp );
DeleteObject( mask );
DeleteDC( hDC );
}
void X11Graphics::drawBitmap( const GenericBitmap &rBitmap, int xSrc,
int ySrc, int xDest, int yDest, int width,
int height, bool blend )
{
// check and adapt to source if needed
if( !checkBoundaries( 0, 0, rBitmap.getWidth(), rBitmap.getHeight(),
xSrc, ySrc, width, height ) )
{
msg_Err( getIntf(), "empty source! pls, debug your skin" );
return;
}
// check destination
if( !checkBoundaries( 0, 0, m_width, m_height,
xDest, yDest, width, height ) )
{
msg_Err( getIntf(), "out of reach destination! pls, debug your skin" );
return;
}
// Get a buffer on the image data
uint8_t *pBmpData = rBitmap.getData();
if( pBmpData == NULL )
{
// Nothing to draw
return;
}
// Force pending XCopyArea to be sent to the X Server
// before issuing an XGetImage.
XSync( XDISPLAY, False );
// Get the image from the pixmap
XImage *pImage = XGetImage( XDISPLAY, m_pixmap, xDest, yDest, width,
height, AllPlanes, ZPixmap );
if( pImage == NULL )
{
msg_Dbg( getIntf(), "XGetImage returned NULL" );
return;
}
char *pData = pImage->data;
// Get the padding of this image
int pad = pImage->bitmap_pad >> 3;
int shift = ( pad - ( (width * XPIXELSIZE) % pad ) ) % pad;
// Mask for transparency
Region mask = XCreateRegion();
// Get a pointer on the right X11Display::makePixel method
X11Display::MakePixelFunc_t makePixelFunc = ( blend ?
m_rDisplay.getBlendPixel() : m_rDisplay.getPutPixel() );
// Skip the first lines of the image
pBmpData += 4 * ySrc * rBitmap.getWidth();
// Copy the bitmap on the image and compute the mask
for( int y = 0; y < height; y++ )
{
// Skip uninteresting bytes at the beginning of the line
pBmpData += 4 * xSrc;
// Flag to say whether the previous pixel on the line was visible
bool wasVisible = false;
// Beginning of the current visible segment on the line
int visibleSegmentStart = 0;
for( int x = 0; x < width; x++ )
{
uint8_t b = *(pBmpData++);
uint8_t g = *(pBmpData++);
uint8_t r = *(pBmpData++);
uint8_t a = *(pBmpData++);
// Draw the pixel
(m_rDisplay.*makePixelFunc)( (uint8_t*)pData, r, g, b, a );
pData += XPIXELSIZE;
if( a > 0 )
{
// Pixel is visible
if( ! wasVisible )
{
// Beginning of a visible segment
visibleSegmentStart = x;
}
wasVisible = true;
}
else
{
// Pixel is transparent
if( wasVisible )
{
// End of a visible segment: add it to the mask
addHSegmentInRegion( mask, visibleSegmentStart, x, y );
}
wasVisible = false;
}
}
if( wasVisible )
{
// End of a visible segment: add it to the mask
addHSegmentInRegion( mask, visibleSegmentStart, width, y );
}
pData += shift;
// Skip uninteresting bytes at the end of the line
pBmpData += 4 * (rBitmap.getWidth() - width - xSrc);
}
// Apply the mask to the graphics context
XOffsetRegion( mask, xDest, yDest );
XSetRegion( XDISPLAY, m_gc, mask );
// Copy the image on the pixmap
XPutImage( XDISPLAY, m_pixmap, m_gc, pImage, 0, 0, xDest, yDest, width,
height);
XDestroyImage( pImage );
// Add the bitmap mask to the global graphics mask
Region newMask = XCreateRegion();
XUnionRegion( mask, m_mask, newMask );
XDestroyRegion( m_mask );
m_mask = newMask;
XDestroyRegion( mask );
}
