4ad1a3d969
For wxDC associated with a window, such as wx{Window,Client,Paint}DC,
this method should return the window PPI, not the hard coded 72 DPI of
Cairo graphics context.
This still doesn't work correctly when using multiple monitors with
different DPI settings, but is still a (modest) improvement.
155 lines
4.8 KiB
C++
155 lines
4.8 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/gtk/dc.h
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// Purpose:
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// Author: Robert Roebling
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// Copyright: (c) 1998 Robert Roebling
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_GTKDC_H_
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#define _WX_GTKDC_H_
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#ifdef __WXGTK3__
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#include "wx/dcgraph.h"
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class wxGTKCairoDCImpl: public wxGCDCImpl
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{
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public:
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wxGTKCairoDCImpl(wxDC* owner);
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wxGTKCairoDCImpl(wxDC* owner, int);
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wxGTKCairoDCImpl(wxDC* owner, double scaleFactor);
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wxGTKCairoDCImpl(wxDC* owner, wxWindow* window);
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virtual void DoDrawBitmap(const wxBitmap& bitmap, int x, int y, bool useMask) wxOVERRIDE;
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virtual void DoDrawIcon(const wxIcon& icon, int x, int y) wxOVERRIDE;
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#if wxUSE_IMAGE
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virtual bool DoFloodFill(int x, int y, const wxColour& col, wxFloodFillStyle style) wxOVERRIDE;
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#endif
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virtual wxBitmap DoGetAsBitmap(const wxRect* subrect) const wxOVERRIDE;
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virtual bool DoGetPixel(int x, int y, wxColour* col) const wxOVERRIDE;
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virtual void DoGetSize(int* width, int* height) const wxOVERRIDE;
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virtual bool 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) wxOVERRIDE;
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virtual void* GetCairoContext() const wxOVERRIDE;
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virtual wxSize GetPPI() const wxOVERRIDE;
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protected:
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int m_width, m_height;
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private:
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bool TryGetWindowSize(wxSize& size, wxSize& sizeMM) const;
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wxDECLARE_NO_COPY_CLASS(wxGTKCairoDCImpl);
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};
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//-----------------------------------------------------------------------------
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class wxWindowDCImpl: public wxGTKCairoDCImpl
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{
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public:
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wxWindowDCImpl(wxWindowDC* owner, wxWindow* window);
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wxDECLARE_NO_COPY_CLASS(wxWindowDCImpl);
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};
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//-----------------------------------------------------------------------------
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class wxClientDCImpl: public wxGTKCairoDCImpl
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{
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public:
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wxClientDCImpl(wxClientDC* owner, wxWindow* window);
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wxDECLARE_NO_COPY_CLASS(wxClientDCImpl);
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};
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//-----------------------------------------------------------------------------
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class wxPaintDCImpl: public wxGTKCairoDCImpl
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{
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public:
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wxPaintDCImpl(wxPaintDC* owner, wxWindow* window);
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wxDECLARE_NO_COPY_CLASS(wxPaintDCImpl);
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};
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//-----------------------------------------------------------------------------
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class wxScreenDCImpl: public wxGTKCairoDCImpl
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{
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public:
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wxScreenDCImpl(wxScreenDC* owner);
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wxDECLARE_NO_COPY_CLASS(wxScreenDCImpl);
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};
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//-----------------------------------------------------------------------------
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class wxMemoryDCImpl: public wxGTKCairoDCImpl
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{
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public:
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wxMemoryDCImpl(wxMemoryDC* owner);
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wxMemoryDCImpl(wxMemoryDC* owner, wxBitmap& bitmap);
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wxMemoryDCImpl(wxMemoryDC* owner, wxDC* dc);
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virtual wxBitmap DoGetAsBitmap(const wxRect* subrect) const wxOVERRIDE;
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virtual void DoSelect(const wxBitmap& bitmap) wxOVERRIDE;
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virtual const wxBitmap& GetSelectedBitmap() const wxOVERRIDE;
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virtual wxBitmap& GetSelectedBitmap() wxOVERRIDE;
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private:
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void Setup();
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wxBitmap m_bitmap;
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wxDECLARE_NO_COPY_CLASS(wxMemoryDCImpl);
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};
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//-----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxGTKCairoDC: public wxDC
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{
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public:
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wxGTKCairoDC(cairo_t* cr, wxWindow* window);
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wxDECLARE_NO_COPY_CLASS(wxGTKCairoDC);
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};
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#else
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#include "wx/dc.h"
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//-----------------------------------------------------------------------------
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// wxDC
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//-----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxGTKDCImpl : public wxDCImpl
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{
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public:
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wxGTKDCImpl( wxDC *owner );
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virtual ~wxGTKDCImpl();
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#if wxUSE_PALETTE
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void SetColourMap( const wxPalette& palette ) { SetPalette(palette); }
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#endif // wxUSE_PALETTE
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// Resolution in pixels per logical inch
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virtual wxSize GetPPI() const wxOVERRIDE;
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virtual bool StartDoc( const wxString& WXUNUSED(message) ) wxOVERRIDE { return true; }
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virtual void EndDoc() wxOVERRIDE { }
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virtual void StartPage() wxOVERRIDE { }
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virtual void EndPage() wxOVERRIDE { }
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virtual GdkWindow* GetGDKWindow() const { return NULL; }
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virtual void* GetHandle() const wxOVERRIDE { return GetGDKWindow(); }
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// base class pure virtuals implemented here
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virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height) wxOVERRIDE;
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virtual void DoGetSizeMM(int* width, int* height) const wxOVERRIDE;
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wxDECLARE_ABSTRACT_CLASS(wxGTKDCImpl);
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};
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// this must be defined when wxDC::Blit() honours the DC origin and needed to
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// allow wxUniv code in univ/winuniv.cpp to work with versions of wxGTK
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// 2.3.[23]
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#ifndef wxHAS_WORKING_GTK_DC_BLIT
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#define wxHAS_WORKING_GTK_DC_BLIT
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#endif
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#endif
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#endif // _WX_GTKDC_H_
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