/*****
OVERRIDE
Called by the framework to configure the printout. Paginates the set of diagrams
by setting (in RFCanvas::mBlockPages) the number indicating the page that each
block of diagrams gets printed on. Since pagination has to work for both preview
and printed image, compute pagination normalized to the page width -- which
means that we're using the vertical aspect ratio of the page margins rect and of
the blocks of diagram. We only break pages between complete blocks of diagrams.
*****/
void RFPrintout::OnPreparePrinting()
{
// We do all our drawing in device coordinates so that drawing is done at
// maximum device resolution on the printed page.
MapScreenSizeToDevice();
wxRect pmRect = GetLogicalPageMarginsRect(*gApp->GetPageSetupDialogData());
double pageAR = double(pmRect.height) / pmRect.width;
// Paginate the blocks of diagrams
gCanvas->mBlockPages.clear();
double curAR = 0.0;
int curPage = 1;
for (size_t i = 0; i < gCanvas->mImageBlocks.size(); ++i) {
double blockAR = double(gCanvas->mImageBlocks[i]) / gCanvas->mImageWidth;
if (curAR + blockAR <= pageAR) {
curAR += blockAR;
}
else {
curPage++;
curAR = blockAR;
}
gCanvas->mBlockPages.push_back(curPage);
}
}
bool wxSFPrintout::OnPrintPage(int page)
{
wxUnusedVar( page );
wxASSERT_MSG(m_pCanvas, wxT("Shape canvas must be set in the wxSFPrintout class instance."));
wxDC *dc = GetDC();
if (dc && m_pCanvas)
{
// get grawing size
wxRect fitRect, totalBB = m_pCanvas->GetTotalBoundingBox();
wxCoord maxX = totalBB.GetRight();
wxCoord maxY = totalBB.GetBottom();
// set printing mode
switch( m_pCanvas->GetPrintMode() )
{
case wxSFShapeCanvas::prnFIT_TO_PAGE:
FitThisSizeToPage(wxSize(maxX, maxY));
fitRect = GetLogicalPageRect();
break;
case wxSFShapeCanvas::prnFIT_TO_PAPER:
FitThisSizeToPaper(wxSize(maxX, maxY));
fitRect = GetLogicalPaperRect();
break;
case wxSFShapeCanvas::prnFIT_TO_MARGINS:
FitThisSizeToPageMargins(wxSize(maxX, maxY), *g_pageSetupData);
fitRect = GetLogicalPageMarginsRect(*g_pageSetupData);
break;
case wxSFShapeCanvas::prnMAP_TO_PAGE:
MapScreenSizeToPage();
fitRect = GetLogicalPageRect();
break;
case wxSFShapeCanvas::prnMAP_TO_PAPER:
MapScreenSizeToPaper();
fitRect = GetLogicalPaperRect();
break;
case wxSFShapeCanvas::prnMAP_TO_MARGINS:
MapScreenSizeToPage();
fitRect = GetLogicalPageMarginsRect(*g_pageSetupData);
break;
case wxSFShapeCanvas::prnMAP_TO_DEVICE:
MapScreenSizeToDevice();
fitRect = GetLogicalPageRect();
break;
}
// This offsets the image so that it is centered within the reference
// rectangle defined above.
wxCoord xoff = ((fitRect.width - maxX - totalBB.GetLeft()) / 2) - fitRect.x;
wxCoord yoff = ((fitRect.height - maxY - totalBB.GetTop()) / 2) - fitRect.y;
switch( m_pCanvas->GetPrintHAlign() )
{
case wxSFShapeCanvas::halignLEFT:
xoff = 0;
break;
case wxSFShapeCanvas::halignRIGHT:
xoff = fitRect.width - totalBB.GetWidth();
break;
default:
break;
}
switch( m_pCanvas->GetPrintVAlign() )
{
case wxSFShapeCanvas::valignTOP:
yoff = 0;
break;
case wxSFShapeCanvas::valignBOTTOM:
yoff = fitRect.height - totalBB.GetHeight();
break;
default:
break;
}
OffsetLogicalOrigin(xoff, yoff);
// store current canvas properties
double prevScale = m_pCanvas->GetScale();
long prevStyle = m_pCanvas->GetStyle();
wxColour prevColour = m_pCanvas->GetCanvasColour();
// disable canvas background drawing if required
if( !m_pCanvas->ContainsStyle( wxSFShapeCanvas::sfsPRINT_BACKGROUND ) )
{
m_pCanvas->RemoveStyle( wxSFShapeCanvas::sfsGRADIENT_BACKGROUND );
m_pCanvas->RemoveStyle( wxSFShapeCanvas::sfsGRID_SHOW );
m_pCanvas->SetCanvasColour( *wxWHITE);
}
// draw the canvas content without any scale (dc is scaled by the printing framework)
#if wxVERSION_NUMBER < 2900
double nScale = 1;
if( wxSFShapeCanvas::IsGCEnabled() ) dc->GetUserScale( &nScale, &nScale );
m_pCanvas->SetScale(1);
#ifdef __WXMSW__
wxSFScaledDC sdc( (wxWindowDC*)dc, nScale );
sdc.PrepareGC();
m_pCanvas->DrawContent(sdc, sfNOT_FROM_PAINT);
#else
m_pCanvas->DrawContent(*dc, sfNOT_FROM_PAINT);
#endif
m_pCanvas->SetScale(prevScale);
#else
m_pCanvas->SetScale(1);
m_pCanvas->DrawContent(*dc, sfNOT_FROM_PAINT);
m_pCanvas->SetScale(prevScale);
#endif
// restore previous canvas properties if needed
if( !m_pCanvas->ContainsStyle( wxSFShapeCanvas::sfsPRINT_BACKGROUND ) )
{
m_pCanvas->SetStyle( prevStyle );
m_pCanvas->SetCanvasColour( prevColour );
}
return true;
}
else
return false;
}
