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fixed scaling of print preview if there's not enough RAM for the full page

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@55134 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Václav Slavík
2008-08-20 21:58:31 +00:00
parent fda71b397a
commit 373c713ad4
1 changed files with 19 additions and 11 deletions
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30
src/msw/printwin.cpp
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@@ -465,42 +465,48 @@ namespace
class PageFragmentDCImpl : public wxMemoryDCImpl
{
public:
PageFragmentDCImpl(wxMemoryDC *owner, wxDC *printer, const wxRect& rect)
PageFragmentDCImpl(wxMemoryDC *owner, wxDC *printer,
const wxPoint& offset,
const wxSize& fullSize)
: wxMemoryDCImpl(owner, printer),
m_rect(rect)
m_offset(offset),
m_fullSize(fullSize)
{
SetDeviceOrigin(0, 0);
}
virtual void SetDeviceOrigin(wxCoord x, wxCoord y)
{
wxMemoryDCImpl::SetDeviceOrigin(x - m_rect.x, y - m_rect.y);
wxMemoryDCImpl::SetDeviceOrigin(x - m_offset.x, y - m_offset.y);
}
virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const
{
wxMemoryDCImpl::DoGetDeviceOrigin(x, y);
if ( x ) *x += m_rect.x;
if ( x ) *y += m_rect.y;
if ( x ) *x += m_offset.x;
if ( x ) *y += m_offset.y;
}
virtual void DoGetSize(int *width, int *height) const
{
if ( width )
*width = m_rect.width;
*width = m_fullSize.x;
if ( height )
*height = m_rect.height;
*height = m_fullSize.y;
}
private:
wxRect m_rect;
wxPoint m_offset;
wxSize m_fullSize;
};
class PageFragmentDC : public wxDC
{
public:
PageFragmentDC(wxDC* printer, wxBitmap& bmp, const wxRect& rect)
: wxDC(new PageFragmentDCImpl((wxMemoryDC*)this, printer, rect))
PageFragmentDC(wxDC* printer, wxBitmap& bmp,
const wxPoint& offset,
const wxSize& fullSize)
: wxDC(new PageFragmentDCImpl((wxMemoryDC*)this, printer, offset, fullSize))
{
wx_static_cast(PageFragmentDCImpl*, m_pimpl)->DoSelect(bmp);
}
@@ -583,7 +589,9 @@ bool wxWindowsPrintPreview::RenderPageFragment(float scaleX, float scaleY,
// render part of the page into it:
{
PageFragmentDC memoryDC(&printer, large, rect);
PageFragmentDC memoryDC(&printer, large,
rect.GetPosition(),
wxSize(m_pageWidth, m_pageHeight));
if ( !memoryDC.IsOk() )
return false;