77ffb5937e
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27404 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
282 lines
9.6 KiB
C++
282 lines
9.6 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: wxWidgets 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/defs.h"
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#include "wx/dc.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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#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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//-----------------------------------------------------------------------------
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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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~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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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 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 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
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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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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 DoGetClippingRegion(wxCoord *x, wxCoord *y,
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wxCoord *width, wxCoord *height)
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{
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GetClippingBox(x, y, width, height);
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}
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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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