bool wxQtDCImpl::DoBlit(wxCoord xdest, wxCoord ydest,
wxCoord width, wxCoord height,
wxDC *source,
wxCoord xsrc, wxCoord ysrc,
wxRasterOperationMode rop,
bool useMask,
wxCoord WXUNUSED(xsrcMask),
wxCoord WXUNUSED(ysrcMask) )
{
wxQtDCImpl *implSource = (wxQtDCImpl*)source->GetImpl();
QImage *qtSource = implSource->m_qtImage;
// Not a CHECK on purpose
if ( !qtSource )
return false;
QImage qtSourceConverted = *qtSource;
if ( !useMask )
qtSourceConverted = qtSourceConverted.convertToFormat( QImage::Format_RGB32 );
// Change logical function
wxRasterOperationMode savedMode = GetLogicalFunction();
SetLogicalFunction( rop );
m_qtPainter->drawImage( QRect( xdest, ydest, width, height ),
qtSourceConverted,
QRect( xsrc, ysrc, width, height ) );
SetLogicalFunction( savedMode );
return true;
}
bool wxGTKCairoDCImpl::DoStretchBlit(int xdest, int ydest, int dstWidth, int dstHeight, wxDC* source, int xsrc, int ysrc, int srcWidth, int srcHeight, wxRasterOperationMode rop, bool useMask, int xsrcMask, int ysrcMask)
{
wxCHECK_MSG(IsOk(), false, "invalid DC");
wxCHECK_MSG(source && source->IsOk(), false, "invalid source DC");
cairo_t* cr = NULL;
if (m_graphicContext)
cr = static_cast<cairo_t*>(m_graphicContext->GetNativeContext());
cairo_t* cr_src = NULL;
wxGraphicsContext* gc_src = source->GetGraphicsContext();
if (gc_src)
cr_src = static_cast<cairo_t*>(gc_src->GetNativeContext());
if (cr == NULL || cr_src == NULL)
return false;
const int xsrc_dev = source->LogicalToDeviceX(xsrc);
const int ysrc_dev = source->LogicalToDeviceY(ysrc);
cairo_surface_t* surfaceSrc = cairo_get_target(cr_src);
cairo_surface_flush(surfaceSrc);
cairo_surface_t* surfaceTmp = NULL;
// If destination (this) and source wxDC refer to the same Cairo context
// it means that we operate on one surface and results of drawing
// can be invalid if destination and source regions overlap.
// In such situation we have to copy source surface to the temporary
// surface and use this copy in the drawing operations.
if ( cr == cr_src )
{
// Check if destination and source regions overlap.
// If necessary, copy source surface to the temporary one.
if (wxRect(xdest, ydest, dstWidth, dstHeight)
.Intersects(wxRect(xsrc, ysrc, srcWidth, srcHeight)))
{
const int w = cairo_image_surface_get_width(surfaceSrc);
const int h = cairo_image_surface_get_height(surfaceSrc);
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0)
if ( cairo_version() >= CAIRO_VERSION_ENCODE(1, 12, 0) )
{
surfaceTmp = cairo_surface_create_similar_image(surfaceSrc,
cairo_image_surface_get_format(surfaceSrc),
w, h);
}
else
#endif // Cairo 1.12
{
surfaceTmp = cairo_surface_create_similar(surfaceSrc,
CAIRO_CONTENT_COLOR_ALPHA,
w, h);
}
cairo_t* crTmp = cairo_create(surfaceTmp);
cairo_set_source_surface(crTmp, surfaceSrc, 0, 0);
cairo_rectangle(crTmp, 0.0, 0.0, w, h);
cairo_set_operator(crTmp, CAIRO_OPERATOR_SOURCE);
cairo_fill(crTmp);
cairo_destroy(crTmp);
cairo_surface_flush(surfaceTmp);
surfaceSrc = surfaceTmp;
}
}
cairo_save(cr);
cairo_translate(cr, xdest, ydest);
cairo_rectangle(cr, 0, 0, dstWidth, dstHeight);
double sx, sy;
source->GetUserScale(&sx, &sy);
cairo_scale(cr, dstWidth / (sx * srcWidth), dstHeight / (sy * srcHeight));
cairo_set_source_surface(cr, surfaceSrc, -xsrc_dev, -ysrc_dev);
const wxRasterOperationMode rop_save = m_logicalFunction;
SetLogicalFunction(rop);
cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
cairo_surface_t* maskSurf = NULL;
if (useMask)
{
const wxBitmap& bitmap = source->GetImpl()->GetSelectedBitmap();
if (bitmap.IsOk())
{
wxMask* mask = bitmap.GetMask();
if (mask)
maskSurf = *mask;
}
}
if (maskSurf)
{
int xsrcMask_dev = xsrc_dev;
int ysrcMask_dev = ysrc_dev;
if (xsrcMask != -1)
xsrcMask_dev = source->LogicalToDeviceX(xsrcMask);
if (ysrcMask != -1)
ysrcMask_dev = source->LogicalToDeviceY(ysrcMask);
cairo_clip(cr);
cairo_mask_surface(cr, maskSurf, -xsrcMask_dev, -ysrcMask_dev);
}
else
{
cairo_fill(cr);
}
cairo_restore(cr);
if ( surfaceTmp )
{
cairo_surface_destroy(surfaceTmp);
}
m_logicalFunction = rop_save;
return true;
}
bool wxGTKCairoDCImpl::DoStretchBlit(int xdest, int ydest, int dstWidth, int dstHeight, wxDC* source, int xsrc, int ysrc, int srcWidth, int srcHeight, wxRasterOperationMode rop, bool useMask, int xsrcMask, int ysrcMask)
{
wxCHECK_MSG(IsOk(), false, "invalid DC");
wxCHECK_MSG(source && source->IsOk(), false, "invalid source DC");
cairo_t* cr = NULL;
if (m_graphicContext)
cr = static_cast<cairo_t*>(m_graphicContext->GetNativeContext());
cairo_t* cr_src = NULL;
wxGraphicsContext* gc_src = source->GetGraphicsContext();
if (gc_src)
cr_src = static_cast<cairo_t*>(gc_src->GetNativeContext());
if (cr == NULL || cr_src == NULL)
return false;
const int xsrc_dev = source->LogicalToDeviceX(xsrc);
const int ysrc_dev = source->LogicalToDeviceY(ysrc);
cairo_surface_t* surface = cairo_get_target(cr_src);
cairo_surface_flush(surface);
cairo_save(cr);
cairo_translate(cr, xdest, ydest);
cairo_rectangle(cr, 0, 0, dstWidth, dstHeight);
double sx, sy;
source->GetUserScale(&sx, &sy);
cairo_scale(cr, dstWidth / (sx * srcWidth), dstHeight / (sy * srcHeight));
cairo_set_source_surface(cr, surface, -xsrc_dev, -ysrc_dev);
const wxRasterOperationMode rop_save = m_logicalFunction;
SetLogicalFunction(rop);
cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
cairo_surface_t* maskSurf = NULL;
if (useMask)
{
const wxBitmap& bitmap = source->GetImpl()->GetSelectedBitmap();
if (bitmap.IsOk())
{
wxMask* mask = bitmap.GetMask();
if (mask)
maskSurf = *mask;
}
}
if (maskSurf)
{
int xsrcMask_dev = xsrc_dev;
int ysrcMask_dev = ysrc_dev;
if (xsrcMask != -1)
xsrcMask_dev = source->LogicalToDeviceX(xsrcMask);
if (ysrcMask != -1)
ysrcMask_dev = source->LogicalToDeviceY(ysrcMask);
cairo_clip(cr);
cairo_mask_surface(cr, maskSurf, -xsrcMask_dev, -ysrcMask_dev);
}
else
{
cairo_fill(cr);
}
cairo_restore(cr);
m_logicalFunction = rop_save;
return true;
}
