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Use cairo_scale() for scaling to full printing resolution, correct transformation in Cairo graphics context for GTK+ printing

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@53420 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2008-04-30 09:17:04 +00:00
parent 87fe0f7505
commit eaeb99858d
2 changed files with 29 additions and 17 deletions
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31
src/gtk/print.cpp
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@@ -1099,11 +1099,23 @@ bool wxGtkPrinter::Setup( wxWindow * WXUNUSED(parent) )
// wxGtkPrinterDC
//-----------------------------------------------------------------------------
#define wxCAIRO_SCALE 1
#if wxCAIRO_SCALE
#define XLOG2DEV(x) LogicalToDeviceX(x)
#define XLOG2DEVREL(x) LogicalToDeviceXRel(x)
#define YLOG2DEV(x) LogicalToDeviceY(x)
#define YLOG2DEVREL(x) LogicalToDeviceYRel(x)
#else
#define XLOG2DEV(x) ((double)(LogicalToDeviceX(x)) * m_DEV2PS)
#define XLOG2DEVREL(x) ((double)(LogicalToDeviceXRel(x)) * m_DEV2PS)
#define YLOG2DEV(x) ((double)(LogicalToDeviceY(x)) * m_DEV2PS)
#define YLOG2DEVREL(x) ((double)(LogicalToDeviceYRel(x)) * m_DEV2PS)
#endif
IMPLEMENT_ABSTRACT_CLASS(wxGtkPrinterDCImpl, wxDCImpl)
@@ -1122,15 +1134,22 @@ wxGtkPrinterDCImpl::wxGtkPrinterDCImpl(wxPrinterDC *owner, const wxPrintData& da
if (m_resolution < 0)
m_resolution = (1 << (m_resolution+4)) *150;
m_PS2DEV = (double)m_resolution / 72.0;
m_DEV2PS = 72.0 / (double)m_resolution;
m_context = gtk_print_context_create_pango_context( m_gpc );
m_layout = gtk_print_context_create_pango_layout ( m_gpc );
m_fontdesc = pango_font_description_from_string( "Sans 12" );
m_cairo = gtk_print_context_get_cairo_context ( m_gpc );
#if wxCAIRO_SCALE
m_PS2DEV = 1.0;
m_DEV2PS = 1.0;
gs_cairo->cairo_scale( m_cairo, 72.0 / (double)m_resolution, 72.0 / (double)m_resolution );
#else
m_PS2DEV = (double)m_resolution / 72.0;
m_DEV2PS = 72.0 / (double)m_resolution;
#endif
m_currentRed = 0;
m_currentBlue = 0;
m_currentGreen = 0;
@@ -2227,9 +2246,9 @@ void wxGtkPrinterDCImpl::DoGetSize(int* width, int* height) const
GtkPageSetup *setup = gtk_print_context_get_page_setup( m_gpc );
if (width)
*width = wxRound( gtk_page_setup_get_paper_width( setup, GTK_UNIT_POINTS ) * m_PS2DEV );
*width = wxRound( (double)gtk_page_setup_get_paper_width( setup, GTK_UNIT_POINTS ) * (double)m_resolution / 72.0 );
if (height)
*height = wxRound( gtk_page_setup_get_paper_height( setup, GTK_UNIT_POINTS ) * m_PS2DEV );
*height = wxRound( (double)gtk_page_setup_get_paper_height( setup, GTK_UNIT_POINTS ) * (double)m_resolution / 72.0 );
}
void wxGtkPrinterDCImpl::DoGetSizeMM(int *width, int *height) const
@@ -2363,9 +2382,9 @@ void wxGtkPrintPreview::DetermineScaling()
// Get width and height in points (1/72th of an inch)
wxSize sizeDevUnits(paper->GetSizeDeviceUnits());
sizeDevUnits.x = wxRound((double)sizeDevUnits.x * (double)m_resolution / 72.0);
sizeDevUnits.y = wxRound((double)sizeDevUnits.y * (double)m_resolution / 72.0);
wxSize sizeTenthsMM(paper->GetSize());
wxSize sizeMM(sizeTenthsMM.x / 10, sizeTenthsMM.y / 10);