04ab8b6ddf
and thus removed all the duplicated code in all wxDC classes. Problematic is that wxSVGFileDC and wxPostscriptDC inherit from wxDC and therefore include platform specific code (also before this change) so I chose to override all SetLogicalOrigin() etc. methods in these classes and call their wxDCBase methods thereby circumventing the platform dependent code. I'm afraid the Mac code will require updating, too. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45752 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
216 lines
7.6 KiB
C++
216 lines
7.6 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: dc.h
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// Purpose: wxDC class
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// Author: Vaclav Slavik
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// Created: 2001/03/09
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// RCS-ID: $Id$
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// Copyright: (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
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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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#include "wx/defs.h"
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#include "wx/region.h"
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//-----------------------------------------------------------------------------
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// classes
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//-----------------------------------------------------------------------------
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class WXDLLEXPORT 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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// MGL fwd declarations:
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class MGLDevCtx;
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class MGLRegion;
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struct font_t;
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class WXDLLEXPORT wxDC : public wxDCBase
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{
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DECLARE_DYNAMIC_CLASS(wxDC)
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public:
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wxDC();
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virtual ~wxDC();
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// implement base class pure virtuals
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// ----------------------------------
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virtual void Clear();
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virtual bool StartDoc(const wxString& message);
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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 SetFont(const wxFont& font);
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virtual void SetPen(const wxPen& pen);
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virtual void SetBrush(const wxBrush& brush);
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virtual void SetBackground(const wxBrush& brush);
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virtual void SetBackgroundMode(int mode);
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virtual void SetPalette(const wxPalette& palette);
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virtual void DestroyClippingRegion();
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virtual wxCoord GetCharHeight() const;
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virtual wxCoord GetCharWidth() const;
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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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const wxFont *theFont = NULL) const;
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virtual bool CanDrawBitmap() const;
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virtual bool CanGetTextExtent() const;
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virtual int GetDepth() const;
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virtual wxSize GetPPI() const;
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virtual void SetLogicalFunction(int function);
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// implementation from now on
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// --------------------------
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virtual void ComputeScaleAndOrigin();
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wxCoord XDEV2LOG(wxCoord x) const { return DeviceToLogicalX(x); }
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wxCoord XDEV2LOGREL(wxCoord x) const { return DeviceToLogicalXRel(x); }
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wxCoord YDEV2LOG(wxCoord y) const { return DeviceToLogicalY(y); }
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wxCoord YDEV2LOGREL(wxCoord y) const { return DeviceToLogicalYRel(y); }
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wxCoord XLOG2DEV(wxCoord x) const { return LogicalToDeviceX(x); }
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wxCoord XLOG2DEVREL(wxCoord x) const { return LogicalToDeviceXRel(x); }
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wxCoord YLOG2DEV(wxCoord y) const { return LogicalToDeviceY(y); }
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wxCoord YLOG2DEVREL(wxCoord y) const { return LogicalToDeviceYRel(y); }
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MGLDevCtx *GetMGLDC() const { return m_MGLDC; }
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void SetMGLDC(MGLDevCtx *mgldc, bool OwnsMGLDC = false);
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protected:
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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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virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
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virtual void DoDrawPoint(wxCoord x, wxCoord y);
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virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
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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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virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
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double sa, double ea);
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virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
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virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
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wxCoord width, wxCoord height,
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double radius);
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virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
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virtual void DoCrossHair(wxCoord x, wxCoord y);
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virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
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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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virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
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virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
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double angle);
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virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
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wxDC *source, wxCoord xsrc, wxCoord ysrc,
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int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
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// this is gnarly - we can't even call this function DoSetClippingRegion()
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// because of virtual function hiding
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virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
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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 DoGetSize(int *width, int *height) const;
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virtual void DoGetSizeMM(int* width, int* height) const;
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virtual void DoDrawLines(int n, wxPoint points[],
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wxCoord xoffset, wxCoord yoffset);
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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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// implementation from now on:
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protected:
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// setup newly attached MGLDevCtx for wxDC's use
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// (does things like setting RGB blending mode for antialiased texts):
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void InitializeMGLDC();
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// common part of DoDrawText() and DoDrawRotatedText()
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void DrawAnyText(const wxString& text, wxCoord x, wxCoord y);
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// MGL uses pens as both wxPens and wxBrushes, so we have to
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// switch them as needed:
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void SelectPen();
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void SelectBrush();
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void SelectMGLStipplePen(int style);
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void SelectMGLFatPen(int style, int flag);
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// Select m_font into m_MGLDC:
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bool SelectMGLFont();
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// Convert wxWin logical function to MGL rop:
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int LogicalFunctionToMGLRop(int logFunc) const;
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// Unified implementation of DrawIcon, DrawBitmap and Blit:
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void DoDrawSubBitmap(const wxBitmap &bmp,
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wxCoord x, wxCoord y, wxCoord w, wxCoord h,
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wxCoord destx, wxCoord desty, int rop, bool useMask);
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// MGL DC class we use:
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MGLDevCtx *m_MGLDC;
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bool m_OwnsMGLDC:1;
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// helper variables for SelectXXXX():
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bool m_penSelected;
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bool m_brushSelected;
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bool m_downloadedPatterns[2];
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// MGL does not render lines with width>1 with endings centered
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// at given coords but with top left corner of the pen at them,
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// these offsets are used to correct it. They are computed by
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// SelectPen.
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int m_penOfsX, m_penOfsY;
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double m_mm_to_pix_x, m_mm_to_pix_y;
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wxPalette m_oldPalette;
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wxRegion m_currentClippingRegion;
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wxRegion m_globalClippingRegion;
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// wxDC::Blit handles memoryDCs as special cases :(
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bool m_isMemDC;
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font_t *m_mglFont;
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};
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#endif
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// _WX_DC_H_
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