68379eaf0a
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29077 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
287 lines
9.9 KiB
C++
287 lines
9.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/dcmirror.h
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// Purpose: wxMirrorDC class
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 21.07.2003
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// RCS-ID: $Id$
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// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_DCMIRROR_H_
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#define _WX_DCMIRROR_H_
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#include "wx/dc.h"
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// ----------------------------------------------------------------------------
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// wxMirrorDC allows to write the same code for horz/vertical layout
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxMirrorDC : public wxDC
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{
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public:
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// constructs a mirror DC associated with the given real DC
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//
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// if mirror parameter is true, all vertical and horizontal coordinates are
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// exchanged, otherwise this class behaves in exactly the same way as a
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// plain DC
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//
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// the cast to wxMirrorDC is a dirty hack done to allow us to call the
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// protected methods of wxDCBase directly in our code below, without it it
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// would be impossible (this is correct from C++ point of view but doesn't
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// make any sense in this particular situation)
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wxMirrorDC(wxDC& dc, bool mirror) : m_dc((wxMirrorDC&)dc)
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{ m_mirror = mirror; }
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// wxDCBase operations
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virtual void Clear() { m_dc.Clear(); }
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virtual void SetFont(const wxFont& font) { m_dc.SetFont(font); }
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virtual void SetPen(const wxPen& pen) { m_dc.SetPen(pen); }
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virtual void SetBrush(const wxBrush& brush) { m_dc.SetBrush(brush); }
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virtual void SetBackground(const wxBrush& brush)
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{ m_dc.SetBackground(brush); }
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virtual void SetBackgroundMode(int mode) { m_dc.SetBackgroundMode(mode); }
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#if wxUSE_PALETTE
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virtual void SetPalette(const wxPalette& palette)
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{ m_dc.SetPalette(palette); }
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#endif // wxUSE_PALETTE
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virtual void DestroyClippingRegion() { m_dc.DestroyClippingRegion(); }
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virtual wxCoord GetCharHeight() const { return m_dc.GetCharHeight(); }
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virtual wxCoord GetCharWidth() const { return m_dc.GetCharWidth(); }
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virtual bool CanDrawBitmap() const { return m_dc.CanDrawBitmap(); }
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virtual bool CanGetTextExtent() const { return m_dc.CanGetTextExtent(); }
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virtual int GetDepth() const { return m_dc.GetDepth(); }
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virtual wxSize GetPPI() const { return m_dc.GetPPI(); }
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virtual bool Ok() const { return m_dc.Ok(); }
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virtual void SetMapMode(int mode) { m_dc.SetMapMode(mode); }
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virtual void SetUserScale(double x, double y)
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{ m_dc.SetUserScale(GetX(x, y), GetY(x, y)); }
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virtual void SetLogicalOrigin(wxCoord x, wxCoord y)
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{ m_dc.SetLogicalOrigin(GetX(x, y), GetY(x, y)); }
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virtual void SetDeviceOrigin(wxCoord x, wxCoord y)
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{ m_dc.SetDeviceOrigin(GetX(x, y), GetY(x, y)); }
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virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
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{ m_dc.SetAxisOrientation(GetX(xLeftRight, yBottomUp),
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GetY(xLeftRight, yBottomUp)); }
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virtual void SetLogicalFunction(int function)
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{ m_dc.SetLogicalFunction(function); }
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// helper functions which may be useful for the users of this class
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wxSize Reflect(const wxSize& sizeOrig)
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{
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return m_mirror ? wxSize(sizeOrig.y, sizeOrig.x) : sizeOrig;
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}
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protected:
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// returns x and y if not mirroring or y and x if mirroring
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wxCoord GetX(wxCoord x, wxCoord y) const { return m_mirror ? y : x; }
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wxCoord GetY(wxCoord x, wxCoord y) const { return m_mirror ? x : y; }
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double GetX(double x, double y) const { return m_mirror ? y : x; }
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double GetY(double x, double y) const { return m_mirror ? x : y; }
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bool GetX(bool x, bool y) const { return m_mirror ? y : x; }
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bool GetY(bool x, bool y) const { return m_mirror ? x : y; }
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// same thing but for pointers
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wxCoord *GetX(wxCoord *x, wxCoord *y) const { return m_mirror ? y : x; }
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wxCoord *GetY(wxCoord *x, wxCoord *y) const { return m_mirror ? x : y; }
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// exchange x and y unconditionally
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static void Swap(wxCoord& x, wxCoord& y)
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{
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wxCoord t = x;
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x = y;
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y = t;
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}
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// exchange x and y components of all points in the array if necessary
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void Mirror(int n, wxPoint points[]) const
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{
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if ( m_mirror )
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{
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for ( int i = 0; i < n; i++ )
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{
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Swap(points[i].x, points[i].y);
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}
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}
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}
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// wxDCBase functions
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virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
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int style = wxFLOOD_SURFACE)
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{
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return m_dc.DoFloodFill(GetX(x, y), GetY(x, y), col, style);
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}
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virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
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{
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return m_dc.DoGetPixel(GetX(x, y), GetY(x, y), col);
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}
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virtual void DoDrawPoint(wxCoord x, wxCoord y)
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{
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m_dc.DoDrawPoint(GetX(x, y), GetY(x, y));
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}
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virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
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{
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m_dc.DoDrawLine(GetX(x1, y1), GetY(x1, y1), GetX(x2, y2), GetY(x2, y2));
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}
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virtual void DoDrawArc(wxCoord x1, wxCoord y1,
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wxCoord x2, wxCoord y2,
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wxCoord xc, wxCoord yc)
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{
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wxFAIL_MSG( _T("this is probably wrong") );
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m_dc.DoDrawArc(GetX(x1, y1), GetY(x1, y1),
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GetX(x2, y2), GetY(x2, y2),
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xc, yc);
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}
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virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
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wxCoord w, wxCoord h)
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{
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m_dc.DoDrawCheckMark(GetX(x, y), GetY(x, y),
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GetX(w, h), GetY(w, h));
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}
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virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
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double sa, double ea)
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{
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wxFAIL_MSG( _T("this is probably wrong") );
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m_dc.DoDrawEllipticArc(GetX(x, y), GetY(x, y),
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GetX(w, h), GetY(w, h),
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sa, ea);
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}
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virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
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{
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m_dc.DoDrawRectangle(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
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}
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virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
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wxCoord w, wxCoord h,
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double radius)
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{
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m_dc.DoDrawRoundedRectangle(GetX(x, y), GetY(x, y),
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GetX(w, h), GetY(w, h),
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radius);
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}
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virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
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{
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m_dc.DoDrawEllipse(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
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}
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virtual void DoCrossHair(wxCoord x, wxCoord y)
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{
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m_dc.DoCrossHair(GetX(x, y), GetY(x, y));
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}
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virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
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{
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m_dc.DoDrawIcon(icon, GetX(x, y), GetY(x, y));
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}
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virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
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bool useMask = false)
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{
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m_dc.DoDrawBitmap(bmp, GetX(x, y), GetY(x, y), useMask);
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}
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virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y)
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{
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// this is never mirrored
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m_dc.DoDrawText(text, x, y);
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}
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virtual void DoDrawRotatedText(const wxString& text,
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wxCoord x, wxCoord y, double angle)
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{
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// this is never mirrored
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m_dc.DoDrawRotatedText(text, x, y, angle);
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}
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virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
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wxCoord w, wxCoord h,
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wxDC *source, wxCoord xsrc, wxCoord ysrc,
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int rop = wxCOPY, bool useMask = false,
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wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
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{
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return m_dc.DoBlit(GetX(xdest, ydest), GetY(xdest, ydest),
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GetX(w, h), GetY(w, h),
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source, GetX(xsrc, ysrc), GetY(xsrc, ysrc),
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rop, useMask,
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GetX(xsrcMask, ysrcMask), GetX(xsrcMask, ysrcMask));
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}
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virtual void DoGetSize(int *w, int *h) const
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{
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m_dc.DoGetSize(GetX(w, h), GetY(w, h));
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}
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virtual void DoGetSizeMM(int *w, int *h) const
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{
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m_dc.DoGetSizeMM(GetX(w, h), GetY(w, h));
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}
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virtual void DoDrawLines(int n, wxPoint points[],
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wxCoord xoffset, wxCoord yoffset)
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{
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Mirror(n, points);
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m_dc.DoDrawLines(n, points,
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GetX(xoffset, yoffset), GetY(xoffset, yoffset));
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Mirror(n, points);
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}
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virtual void DoDrawPolygon(int n, wxPoint points[],
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wxCoord xoffset, wxCoord yoffset,
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int fillStyle = wxODDEVEN_RULE)
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{
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Mirror(n, points);
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m_dc.DoDrawPolygon(n, points,
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GetX(xoffset, yoffset), GetY(xoffset, yoffset),
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fillStyle);
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Mirror(n, points);
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}
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virtual void DoSetClippingRegionAsRegion(const wxRegion& WXUNUSED(region))
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{
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wxFAIL_MSG( _T("not implemented") );
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}
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virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
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wxCoord w, wxCoord h)
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{
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m_dc.DoSetClippingRegion(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
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}
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virtual void DoGetTextExtent(const wxString& string,
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wxCoord *x, wxCoord *y,
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wxCoord *descent = NULL,
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wxCoord *externalLeading = NULL,
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wxFont *theFont = NULL) const
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{
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// never mirrored
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m_dc.DoGetTextExtent(string, x, y, descent, externalLeading, theFont);
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}
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private:
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wxMirrorDC& m_dc;
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bool m_mirror;
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DECLARE_NO_COPY_CLASS(wxMirrorDC)
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};
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#endif // _WX_DCMIRROR_H_
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