621b83d9b3
virtual and implement them like any other method
in the wxDC classes, not only in the their files
but somehow belonging to the wxDCBase class.
This is required for plugging in differnt DC backends
with different conversions.
Ideally (and absolutely possible ) all these methods
should be removed and just the one in wxDCBase
should stay using values set in the various
derived classes.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45741 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
142 lines
4.3 KiB
C++
142 lines
4.3 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/gtk1/dc.h
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// Purpose:
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// Author: Robert Roebling
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// Id: $Id$
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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 __GTKDCH__
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#define __GTKDCH__
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//-----------------------------------------------------------------------------
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// classes
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//-----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxDC;
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//-----------------------------------------------------------------------------
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// constants
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//-----------------------------------------------------------------------------
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#ifndef MM_TEXT
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#define MM_TEXT 0
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#define MM_ISOTROPIC 1
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#define MM_ANISOTROPIC 2
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#define MM_LOMETRIC 3
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#define MM_HIMETRIC 4
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#define MM_TWIPS 5
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#define MM_POINTS 6
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#define MM_METRIC 7
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#endif
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//-----------------------------------------------------------------------------
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// wxDC
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//-----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxDC : public wxDCBase
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{
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public:
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wxDC();
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virtual ~wxDC() { }
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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;
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virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
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virtual void EndDoc() { }
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virtual void StartPage() { }
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virtual void EndPage() { }
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virtual wxCoord DeviceToLogicalX(wxCoord x) const;
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virtual wxCoord DeviceToLogicalY(wxCoord y) const;
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virtual wxCoord DeviceToLogicalXRel(wxCoord x) const;
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virtual wxCoord DeviceToLogicalYRel(wxCoord y) const;
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virtual wxCoord LogicalToDeviceX(wxCoord x) const;
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virtual wxCoord LogicalToDeviceY(wxCoord y) const;
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virtual wxCoord LogicalToDeviceXRel(wxCoord x) const;
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virtual wxCoord LogicalToDeviceYRel(wxCoord y) const ;
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virtual void SetMapMode( int mode );
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virtual void SetUserScale( double x, double y );
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virtual void SetLogicalScale( double x, double y );
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virtual void SetLogicalOrigin( wxCoord x, wxCoord y );
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virtual void SetDeviceOrigin( wxCoord x, wxCoord y );
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virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
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// implementation
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// --------------
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virtual void ComputeScaleAndOrigin();
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virtual GdkWindow* GetGDKWindow() const { return NULL; }
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wxCoord XDEV2LOG(wxCoord x) const
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{
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return wxRound((double)(x - m_deviceOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
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}
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wxCoord XDEV2LOGREL(wxCoord x) const
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{
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return wxRound((double)(x) / m_scaleX);
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}
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wxCoord YDEV2LOG(wxCoord y) const
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{
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return wxRound((double)(y - m_deviceOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
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}
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wxCoord YDEV2LOGREL(wxCoord y) const
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{
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return wxRound((double)(y) / m_scaleY);
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}
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wxCoord XLOG2DEV(wxCoord x) const
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{
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return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX;
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}
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wxCoord XLOG2DEVREL(wxCoord x) const
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{
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return wxRound((double)(x) * m_scaleX);
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}
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wxCoord YLOG2DEV(wxCoord y) const
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{
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return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY;
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}
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wxCoord YLOG2DEVREL(wxCoord y) const
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{
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return wxRound((double)(y) * m_scaleY);
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}
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protected:
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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);
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virtual void DoGetSizeMM(int* width, int* height) const;
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public:
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// GTK-specific member variables
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// not sure what for, but what is a mm on a screen you don't know the size
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// of?
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double m_mm_to_pix_x,
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m_mm_to_pix_y;
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bool m_needComputeScaleX,
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m_needComputeScaleY; // not yet used
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private:
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DECLARE_ABSTRACT_CLASS(wxDC)
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};
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// this must be defined when wxDC::Blit() honours the DC origian 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 // __GTKDCH__
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