b1263dcfa3
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@31034 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
145 lines
4.2 KiB
C++
145 lines
4.2 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: dc.h
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// Purpose: wxDC class
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// Author: Julian Smart
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// Modified by:
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// Created: 17/09/98
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// RCS-ID: $Id$
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_DC_H_
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#define _WX_DC_H_
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#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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#pragma interface "dc.h"
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#endif
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#include "wx/pen.h"
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#include "wx/brush.h"
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#include "wx/icon.h"
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#include "wx/font.h"
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#include "wx/gdicmn.h"
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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 WXDLLEXPORT wxDC : public wxDCBase
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{
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public:
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wxDC();
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~wxDC() { }
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// implement base class pure virtuals
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// ----------------------------------
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virtual wxSize GetPPI() 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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protected:
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virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
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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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virtual void ComputeScaleAndOrigin();
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wxCoord XDEV2LOG(wxCoord x) const
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{
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wxCoord new_x = x - m_deviceOriginX;
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if (new_x > 0)
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return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
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else
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return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * 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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if (x > 0)
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return (wxCoord)((double)(x) / m_scaleX + 0.5);
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else
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return (wxCoord)((double)(x) / m_scaleX - 0.5);
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}
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wxCoord YDEV2LOG(wxCoord y) const
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{
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wxCoord new_y = y - m_deviceOriginY;
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if (new_y > 0)
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return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
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else
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return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * 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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if (y > 0)
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return (wxCoord)((double)(y) / m_scaleY + 0.5);
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else
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return (wxCoord)((double)(y) / m_scaleY - 0.5);
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}
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wxCoord XLOG2DEV(wxCoord x) const
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{
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wxCoord new_x = x - m_logicalOriginX;
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if (new_x > 0)
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return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
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else
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return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * 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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if (x > 0)
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return (wxCoord)((double)(x) * m_scaleX + 0.5);
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else
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return (wxCoord)((double)(x) * m_scaleX - 0.5);
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}
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wxCoord YLOG2DEV(wxCoord y) const
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{
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wxCoord new_y = y - m_logicalOriginY;
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if (new_y > 0)
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return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
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else
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return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * 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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if (y > 0)
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return (wxCoord)((double)(y) * m_scaleY + 0.5);
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else
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return (wxCoord)((double)(y) * m_scaleY - 0.5);
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}
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public:
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// not sure what for, but what is a mm on a screen you don't know the size of?
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double m_mm_to_pix_x,m_mm_to_pix_y;
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// recompute scale?
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bool m_needComputeScaleX, m_needComputeScaleY;
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private:
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DECLARE_ABSTRACT_CLASS(wxDC)
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};
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#endif
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// _WX_DC_H_
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