d3c7fc996a
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41020 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
162 lines
4.4 KiB
C++
162 lines
4.4 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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// 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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// 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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// coordinates transformations
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//-----------------------------------------------------------------------------
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inline wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const
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{
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return wxRound((x - m_deviceOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
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}
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inline wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const
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{
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return wxRound((y - m_deviceOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
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}
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inline wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const
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{
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return wxRound(x / m_scaleX);
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}
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inline wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const
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{
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return wxRound(y / m_scaleY);
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}
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inline wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const
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{
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return wxRound((x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX;
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}
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inline wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const
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{
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return wxRound((y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY;
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}
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inline wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const
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{
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return wxRound(x * m_scaleX);
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}
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inline wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const
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{
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return wxRound(y * m_scaleY);
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}
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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 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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virtual void ComputeScaleAndOrigin();
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protected:
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// implementation
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// --------------
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wxCoord XDEV2LOG(wxCoord x) const
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{
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return DeviceToLogicalX(x);
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}
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wxCoord XDEV2LOGREL(wxCoord x) const
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{
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return DeviceToLogicalXRel(x);
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}
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wxCoord YDEV2LOG(wxCoord y) const
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{
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return DeviceToLogicalY(y);
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}
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wxCoord YDEV2LOGREL(wxCoord y) const
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{
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return DeviceToLogicalYRel(y);
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}
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wxCoord XLOG2DEV(wxCoord x) const
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{
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return LogicalToDeviceX(x);
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}
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wxCoord XLOG2DEVREL(wxCoord x) const
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{
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return LogicalToDeviceXRel(x);
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}
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wxCoord YLOG2DEV(wxCoord y) const
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{
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return LogicalToDeviceY(y);
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}
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wxCoord YLOG2DEVREL(wxCoord y) const
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{
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return LogicalToDeviceYRel(y);
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}
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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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