4f4c5fcfdf
This is a combination of running clang-tidy with modernize-use-nullptr check for some ports (GTK, X11, OSX) and manual changes to the ports for which it couldn't be used easily (MSW, DFB) and also manually updating the docs. Also replace NULL with null or nullptr in the comments as this is more consistent with the use of nullptr in the code and makes it simpler to grep for the remaining occurrences of NULL itself. And also use null in the assert messages. Only a few occurrences of "NULL" are still left in non-C files, mostly corresponding to unclear comments or string output which it might not be safe to change.
297 lines
11 KiB
C++
297 lines
11 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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// 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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#include "wx/scopedarray.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 WXDLLIMPEXP_CORE wxMirrorDCImpl : public wxDCImpl
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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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wxMirrorDCImpl(wxDC *owner, wxDCImpl& dc, bool mirror)
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: wxDCImpl(owner),
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m_dc(dc)
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{
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m_mirror = mirror;
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}
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// wxDCBase operations
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virtual void Clear() override { m_dc.Clear(); }
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virtual void SetFont(const wxFont& font) override { m_dc.SetFont(font); }
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virtual void SetPen(const wxPen& pen) override { m_dc.SetPen(pen); }
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virtual void SetBrush(const wxBrush& brush) override { m_dc.SetBrush(brush); }
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virtual void SetBackground(const wxBrush& brush) override
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{ m_dc.SetBackground(brush); }
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virtual void SetBackgroundMode(int mode) override { m_dc.SetBackgroundMode(mode); }
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#if wxUSE_PALETTE
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virtual void SetPalette(const wxPalette& palette) override
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{ m_dc.SetPalette(palette); }
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#endif // wxUSE_PALETTE
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virtual void DestroyClippingRegion() override { m_dc.DestroyClippingRegion(); }
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virtual wxCoord GetCharHeight() const override { return m_dc.GetCharHeight(); }
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virtual wxCoord GetCharWidth() const override { return m_dc.GetCharWidth(); }
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virtual bool CanDrawBitmap() const override { return m_dc.CanDrawBitmap(); }
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virtual bool CanGetTextExtent() const override { return m_dc.CanGetTextExtent(); }
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virtual int GetDepth() const override { return m_dc.GetDepth(); }
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virtual wxSize GetPPI() const override { return m_dc.GetPPI(); }
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virtual bool IsOk() const override { return m_dc.IsOk(); }
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virtual void SetMapMode(wxMappingMode mode) override { m_dc.SetMapMode(mode); }
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virtual void SetUserScale(double x, double y) override
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{ m_dc.SetUserScale(GetX(x, y), GetY(x, y)); }
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virtual void SetLogicalOrigin(wxCoord x, wxCoord y) override
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{ m_dc.SetLogicalOrigin(GetX(x, y), GetY(x, y)); }
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virtual void SetDeviceOrigin(wxCoord x, wxCoord y) override
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{ m_dc.SetDeviceOrigin(GetX(x, y), GetY(x, y)); }
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virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp) override
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{ m_dc.SetAxisOrientation(GetX(xLeftRight, yBottomUp),
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GetY(xLeftRight, yBottomUp)); }
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virtual void SetLogicalFunction(wxRasterOperationMode function) override
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{ m_dc.SetLogicalFunction(function); }
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virtual void* GetHandle() const override
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{ return m_dc.GetHandle(); }
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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 components of all points in the array if necessary
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wxPoint* Mirror(int n, const wxPoint*& points) const
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{
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wxPoint* points_alloc = nullptr;
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if ( m_mirror )
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{
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points_alloc = new wxPoint[n];
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for ( int i = 0; i < n; i++ )
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{
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points_alloc[i].x = points[i].y;
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points_alloc[i].y = points[i].x;
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}
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points = points_alloc;
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}
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return points_alloc;
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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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wxFloodFillStyle style = wxFLOOD_SURFACE) override
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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 override
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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) override
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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) override
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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) override
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{
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wxFAIL_MSG( wxT("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) override
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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) override
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{
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wxFAIL_MSG( wxT("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) override
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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) override
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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) override
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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) override
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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) override
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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) override
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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) override
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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) override
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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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wxRasterOperationMode rop = wxCOPY,
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bool useMask = false,
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wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord) override
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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 override
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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 override
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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, const wxPoint points[],
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wxCoord xoffset, wxCoord yoffset) override
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{
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wxScopedArray<wxPoint> points_alloc(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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}
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virtual void DoDrawPolygon(int n, const wxPoint points[],
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wxCoord xoffset, wxCoord yoffset,
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wxPolygonFillMode fillStyle = wxODDEVEN_RULE) override
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{
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wxScopedArray<wxPoint> points_alloc(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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}
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virtual void DoSetDeviceClippingRegion(const wxRegion& WXUNUSED(region)) override
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{
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wxFAIL_MSG( wxT("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) override
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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 = nullptr,
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wxCoord *externalLeading = nullptr,
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const wxFont *theFont = nullptr) const override
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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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wxDCImpl& m_dc;
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bool m_mirror;
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wxDECLARE_NO_COPY_CLASS(wxMirrorDCImpl);
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};
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class WXDLLIMPEXP_CORE wxMirrorDC : public wxDC
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{
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public:
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wxMirrorDC(wxDC& dc, bool mirror)
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: wxDC(new wxMirrorDCImpl(this, *dc.GetImpl(), mirror))
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{
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m_mirror = mirror;
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}
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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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private:
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bool m_mirror;
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wxDECLARE_NO_COPY_CLASS(wxMirrorDC);
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};
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#endif // _WX_DCMIRROR_H_
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