void X11Graphics::drawRect( int left, int top, int width, int height,
uint32_t color )
{
// Update the mask with the rectangle
addHSegmentInRegion( m_mask, left, left + width, top );
addHSegmentInRegion( m_mask, left, left + width, top + height );
addVSegmentInRegion( m_mask, top, top + height, left );
addVSegmentInRegion( m_mask, top, top + height, left + width );
// Draw the rectangle
XGCValues gcVal;
gcVal.foreground = m_rDisplay.getPixelValue( color >> 16, color >> 8, color );
XChangeGC( XDISPLAY, m_gc, GCForeground, &gcVal );
XSetRegion( XDISPLAY, m_gc, m_mask );
XDrawRectangle( XDISPLAY, m_pixmap, m_gc, left, top, width - 1, height - 1 );
}
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 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 );
}
