/////////////////////////////////////////////////////////////////////////////
// Name: dc.h
// Purpose: wxDC class
-// Author: AUTHOR
+// Author: David Webster
// Modified by:
-// Created: ??/??/98
+// Created: 08/26/99
// RCS-ID: $Id$
-// Copyright: (c) AUTHOR
-// Licence: wxWindows licence
+// Copyright: (c) David Webster
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_DC_H_
#define _WX_DC_H_
-#ifdef __GNUG__
-#pragma interface "dc.h"
-#endif
+#include "wx/defs.h"
+#include "wx/dc.h"
-#include "wx/pen.h"
-#include "wx/brush.h"
-#include "wx/icon.h"
-#include "wx/font.h"
-#include "wx/gdicmn.h"
-
-//-----------------------------------------------------------------------------
-// constants
-//-----------------------------------------------------------------------------
-
-#ifndef MM_TEXT
-#define MM_TEXT 0
-#define MM_ISOTROPIC 1
-#define MM_ANISOTROPIC 2
-#define MM_LOMETRIC 3
-#define MM_HIMETRIC 4
-#define MM_TWIPS 5
-#define MM_POINTS 6
-#define MM_METRIC 7
-#endif
+// ---------------------------------------------------------------------------
+// macros
+// ---------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-// global variables
-//-----------------------------------------------------------------------------
+// Logical to device
+// Absolute
+#define XLOG2DEV(x) (x)
+#define YLOG2DEV(y) (y)
-extern int wxPageNumber;
+// Relative
+#define XLOG2DEVREL(x) (x)
+#define YLOG2DEVREL(y) (y)
-//-----------------------------------------------------------------------------
-// wxDC
-//-----------------------------------------------------------------------------
+// Device to logical
+// Absolute
+#define XDEV2LOG(x) (x)
-class WXDLLEXPORT wxDC: public wxObject
-{
- DECLARE_ABSTRACT_CLASS(wxDC)
+#define YDEV2LOG(y) (y)
- public:
+// Relative
+#define XDEV2LOGREL(x) (x)
+#define YDEV2LOGREL(y) (y)
- wxDC(void);
- ~wxDC(void);
-
- void BeginDrawing(void) {};
- void EndDrawing(void) {};
-
- virtual bool Ok(void) const { return m_ok; };
+/*
+ * Have the same macros as for XView but not for every operation:
+ * just for calculating window/viewport extent (a better way of scaling).
+ */
- virtual void FloodFill( long x1, long y1, const wxColour& col, int style=wxFLOOD_SURFACE ) = 0;
- inline void FloodFill(const wxPoint& pt, const wxColour& col, int style=wxFLOOD_SURFACE)
- {
- FloodFill(pt.x, pt.y, col, style);
- }
+// Logical to device
+// Absolute
+#define MS_XLOG2DEV(x) LogicalToDevice(x)
- virtual bool GetPixel( long x1, long y1, wxColour *col ) const = 0;
- inline bool GetPixel(const wxPoint& pt, wxColour *col) const
- {
- return GetPixel(pt.x, pt.y, col);
- }
+#define MS_YLOG2DEV(y) LogicalToDevice(y)
- virtual void DrawLine( long x1, long y1, long x2, long y2 ) = 0;
- inline void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
- {
- DrawLine(pt1.x, pt1.y, pt2.x, pt2.y);
- }
+// Relative
+#define MS_XLOG2DEVREL(x) LogicalToDeviceXRel(x)
+#define MS_YLOG2DEVREL(y) LogicalToDeviceYRel(y)
- virtual void CrossHair( long x, long y ) = 0;
- inline void CrossHair(const wxPoint& pt)
- {
- CrossHair(pt.x, pt.y);
- }
+// Device to logical
+// Absolute
+#define MS_XDEV2LOG(x) DeviceToLogicalX(x)
- virtual void DrawArc( long x1, long y1, long x2, long y2, long xc, long yc ) = 0;
- inline void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
- {
- DrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y);
- }
+#define MS_YDEV2LOG(y) DeviceToLogicalY(y)
- virtual void DrawEllipticArc( long x, long y, long width, long height, double sa, double ea ) = 0;
- virtual void DrawEllipticArc (const wxPoint& pt, const wxSize& sz, double sa, double ea)
- {
- DrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea);
- }
+// Relative
+#define MS_XDEV2LOGREL(x) DeviceToLogicalXRel(x)
+#define MS_YDEV2LOGREL(y) DeviceToLogicalYRel(y)
- virtual void DrawPoint( long x, long y ) = 0;
- virtual void DrawPoint( wxPoint& point );
-
- virtual void DrawLines( int n, wxPoint points[], long xoffset = 0, long yoffset = 0 ) = 0;
- virtual void DrawLines( wxList *points, long xoffset = 0, long yoffset = 0 );
- virtual void DrawPolygon( int n, wxPoint points[], long xoffset = 0, long yoffset = 0,
- int fillStyle=wxODDEVEN_RULE ) = 0;
- virtual void DrawPolygon( wxList *lines, long xoffset = 0, long yoffset = 0,
- int fillStyle=wxODDEVEN_RULE );
-
- virtual void DrawRectangle( long x, long y, long width, long height ) = 0;
- inline void DrawRectangle(const wxPoint& pt, const wxSize& sz)
- {
- DrawRectangle(pt.x, pt.y, sz.x, sz.y);
- }
- inline void DrawRectangle(const wxRect& rect)
- {
- DrawRectangle(rect.x, rect.y, rect.width, rect.height);
- }
- virtual void DrawRoundedRectangle( long x, long y, long width, long height, double radius = 20.0 ) = 0;
- inline void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz, double radius = 20.0)
- {
- DrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius);
- }
- inline void DrawRoundedRectangle(const wxRect& rect, double radius = 20.0)
- {
- DrawRoundedRectangle(rect.x, rect.y, rect.width, rect.height, radius);
- }
+#define YSCALE(y) (yorigin - (y))
- virtual void DrawEllipse( long x, long y, long width, long height ) = 0;
- inline void DrawEllipse(const wxPoint& pt, const wxSize& sz)
- {
- DrawEllipse(pt.x, pt.y, sz.x, sz.y);
- }
- inline void DrawEllipse(const wxRect& rect)
+#define wx_round(a) (int)((a)+.5)
+
+class WXDLLEXPORT wxDC : public wxDCBase
+{
+ DECLARE_DYNAMIC_CLASS(wxDC)
+
+public:
+ wxDC();
+ ~wxDC();
+
+ // implement base class pure virtuals
+ // ----------------------------------
+
+ virtual void Clear();
+
+ virtual bool StartDoc(const wxString& message);
+ virtual void EndDoc();
+
+ virtual void StartPage();
+ virtual void EndPage();
+
+ virtual void SetFont(const wxFont& font);
+ virtual void SetPen(const wxPen& pen);
+ virtual void SetBrush(const wxBrush& brush);
+ virtual void SetBackground(const wxBrush& brush);
+ virtual void SetBackgroundMode(int mode);
+ virtual void SetPalette(const wxPalette& palette);
+
+ virtual void DestroyClippingRegion();
+
+ virtual long GetCharHeight() const;
+ virtual long GetCharWidth() const;
+ virtual void GetTextExtent(const wxString& string,
+ long *x, long *y,
+ long *descent = NULL,
+ long *externalLeading = NULL,
+ wxFont *theFont = NULL) const;
+
+ virtual bool CanDrawBitmap() const;
+ virtual bool CanGetTextExtent() const;
+ virtual int GetDepth() const;
+ virtual wxSize GetPPI() const;
+
+ virtual void SetMapMode(int mode);
+ virtual void SetUserScale(double x, double y);
+ virtual void SetSystemScale(double x, double y);
+ virtual void SetLogicalScale(double x, double y);
+ virtual void SetLogicalOrigin(long x, long y);
+ virtual void SetDeviceOrigin(long x, long y);
+ virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
+ virtual void SetLogicalFunction(int function);
+
+ // implementation from now on
+ // --------------------------
+
+ virtual void SetRop(WXHDC cdc);
+ virtual void DoClipping(WXHDC cdc);
+ virtual void SelectOldObjects(WXHDC dc);
+
+ wxWindow *GetWindow() const { return m_canvas; }
+ void SetWindow(wxWindow *win) { m_canvas = win; }
+
+ WXHDC GetHDC() const { return m_hDC; }
+ void SetHDC(WXHDC dc, bool bOwnsDC = FALSE)
{
- DrawEllipse(rect.x, rect.y, rect.width, rect.height);
+ m_hDC = dc;
+ m_bOwnsDC = bOwnsDC;
}
- virtual void DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 );
- virtual void DrawSpline( wxList *points ) = 0;
- virtual void DrawSpline( int n, wxPoint points[] );
-
- virtual bool CanDrawBitmap(void) const = 0;
+protected:
+ virtual void DoFloodFill(long x, long y, const wxColour& col,
+ int style = wxFLOOD_SURFACE);
- virtual void DrawIcon( const wxIcon &icon, long x, long y, bool useMask=FALSE );
- inline void DrawIcon(const wxIcon& icon, const wxPoint& pt)
- {
- DrawIcon(icon, pt.x, pt.y);
- }
+ virtual bool DoGetPixel(long x, long y, wxColour *col) const;
- // TODO DrawBitmap is not always the same as DrawIcon, especially if bitmaps and
- // icons are implemented differently.
- void DrawBitmap( const wxBitmap &bmp, long x, long y, bool useMask=FALSE )
- { DrawIcon( *((wxIcon*)(&bmp)), x, y, useMask ); }
+ virtual void DoDrawPoint(long x, long y);
+ virtual void DoDrawLine(long x1, long y1, long x2, long y2);
- virtual bool Blit( long xdest, long ydest, long width, long height,
- wxDC *source, long xsrc, long ysrc, int logical_func = wxCOPY, bool useMask=FALSE ) = 0;
- inline bool Blit(const wxPoint& destPt, const wxSize& sz,
- wxDC *source, const wxPoint& srcPt, int rop = wxCOPY, bool useMask = FALSE)
- {
- return Blit(destPt.x, destPt.y, sz.x, sz.y, source, srcPt.x, srcPt.y, rop, useMask);
- }
+ virtual void DoDrawArc(long x1, long y1,
+ long x2, long y2,
+ long xc, long yc);
+ virtual void DoDrawEllipticArc(long x, long y, long w, long h,
+ double sa, double ea);
+
+ virtual void DoDrawRectangle(long x, long y, long width, long height);
+ virtual void DoDrawRoundedRectangle(long x, long y,
+ long width, long height,
+ double radius);
+ virtual void DoDrawEllipse(long x, long y, long width, long height);
+
+ virtual void DoCrossHair(long x, long y);
+
+ virtual void DoDrawIcon(const wxIcon& icon, long x, long y);
+ virtual void DoDrawBitmap(const wxBitmap &bmp, long x, long y,
+ bool useMask = FALSE);
- virtual void DrawText( const wxString &text, long x, long y, bool use16 = FALSE ) = 0;
- inline void DrawText(const wxString& text, const wxPoint& pt, bool use16bit = FALSE)
+ virtual void DoDrawText(const wxString& text, long x, long y);
+
+ virtual bool DoBlit(long xdest, long ydest, long width, long height,
+ wxDC *source, long xsrc, long ysrc,
+ int rop = wxCOPY, bool useMask = FALSE);
+
+ // this is gnarly - we can't even call this function DoSetClippingRegion()
+ // because of virtual function hiding
+ virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
+ virtual void DoSetClippingRegion(long x, long y,
+ long width, long height);
+ virtual void DoGetClippingRegion(long *x, long *y,
+ long *width, long *height)
{
- DrawText(text, pt.x, pt.y, use16bit);
+ GetClippingBox(x, y, width, height);
}
- virtual bool CanGetTextExtent(void) const = 0;
- virtual void GetTextExtent( const wxString &string, long *width, long *height,
- long *descent = NULL, long *externalLeading = NULL,
- wxFont *theFont = NULL, bool use16 = FALSE ) = 0;
- virtual long GetCharWidth(void) = 0;
- virtual long GetCharHeight(void) = 0;
-
- virtual void Clear(void) = 0;
-
- virtual void SetFont( const wxFont &font ) = 0;
- virtual wxFont& GetFont(void) const { return (wxFont&) m_font; };
-
- virtual void SetPen( const wxPen &pen ) = 0;
- virtual wxPen& GetPen(void) const { return (wxPen&) m_pen; };
-
- virtual void SetBrush( const wxBrush &brush ) = 0;
- virtual wxBrush& GetBrush(void) const { return (wxBrush&) m_brush; };
-
- virtual void SetBackground( const wxBrush &brush ) = 0;
- virtual wxBrush& GetBackground(void) const { return (wxBrush&) m_backgroundBrush; };
-
- virtual void SetLogicalFunction( int function ) = 0;
- virtual int GetLogicalFunction(void) const { return m_logicalFunction; };
-
- virtual void SetTextForeground( const wxColour &col );
- virtual void SetTextBackground( const wxColour &col );
- virtual wxColour& GetTextBackground(void) const { return (wxColour&)m_textBackgroundColour; };
- virtual wxColour& GetTextForeground(void) const { return (wxColour&)m_textForegroundColour; };
-
- virtual void SetBackgroundMode( int mode ) = 0;
- virtual int GetBackgroundMode(void) const { return m_backgroundMode; };
-
- virtual void SetPalette( const wxPalette& palette ) = 0;
- void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
-
- // the first two must be overridden and called
- virtual void SetClippingRegion( long x, long y, long width, long height );
- virtual void DestroyClippingRegion(void);
- virtual void GetClippingBox( long *x, long *y, long *width, long *height ) const;
-
- virtual inline long MinX(void) const { return m_minX; }
- virtual inline long MaxX(void) const { return m_maxX; }
- virtual inline long MinY(void) const { return m_minY; }
- virtual inline long MaxY(void) const { return m_maxY; }
-
- virtual void GetSize( int* width, int* height ) const;
- inline wxSize GetSize(void) const { int w, h; GetSize(&w, &h); return wxSize(w, h); }
- virtual void GetSizeMM( long* width, long* height ) const;
-
- virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return TRUE; };
- virtual void EndDoc(void) {};
- virtual void StartPage(void) {};
- virtual void EndPage(void) {};
-
- virtual void SetMapMode( int mode );
- virtual int GetMapMode(void) const { return m_mappingMode; };
-
- virtual void SetUserScale( double x, double y );
- virtual void GetUserScale( double *x, double *y );
- virtual void SetLogicalScale( double x, double y );
- virtual void GetLogicalScale( double *x, double *y );
-
- virtual void SetLogicalOrigin( long x, long y );
- virtual void GetLogicalOrigin( long *x, long *y );
- virtual void SetDeviceOrigin( long x, long y );
- virtual void GetDeviceOrigin( long *x, long *y );
- virtual void SetInternalDeviceOrigin( long x, long y );
- virtual void GetInternalDeviceOrigin( long *x, long *y );
-
- virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
-
- virtual void SetOptimization( bool WXUNUSED(optimize) ) {};
- virtual bool GetOptimization(void) { return m_optimize; };
-
- virtual long DeviceToLogicalX(long x) const;
- virtual long DeviceToLogicalY(long y) const;
- virtual long DeviceToLogicalXRel(long x) const;
- virtual long DeviceToLogicalYRel(long y) const;
- virtual long LogicalToDeviceX(long x) const;
- virtual long LogicalToDeviceY(long y) const;
- virtual long LogicalToDeviceXRel(long x) const;
- virtual long LogicalToDeviceYRel(long y) const;
-
- public:
-
- void CalcBoundingBox( long x, long y );
- void ComputeScaleAndOrigin(void);
-
- long XDEV2LOG(long x) const
- {
- long new_x = x - m_deviceOriginX;
- if (new_x > 0)
- return (long)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
- else
- return (long)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
- }
- long XDEV2LOGREL(long x) const
- {
- if (x > 0)
- return (long)((double)(x) / m_scaleX + 0.5);
- else
- return (long)((double)(x) / m_scaleX - 0.5);
- }
- long YDEV2LOG(long y) const
- {
- long new_y = y - m_deviceOriginY;
- if (new_y > 0)
- return (long)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
- else
- return (long)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
- }
- long YDEV2LOGREL(long y) const
- {
- if (y > 0)
- return (long)((double)(y) / m_scaleY + 0.5);
- else
- return (long)((double)(y) / m_scaleY - 0.5);
- }
- long XLOG2DEV(long x) const
- {
- long new_x = x - m_logicalOriginX;
- if (new_x > 0)
- return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
- else
- return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
- }
- long XLOG2DEVREL(long x) const
- {
- if (x > 0)
- return (long)((double)(x) * m_scaleX + 0.5);
- else
- return (long)((double)(x) * m_scaleX - 0.5);
- }
- long YLOG2DEV(long y) const
- {
- long new_y = y - m_logicalOriginY;
- if (new_y > 0)
- return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
- else
- return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
- }
- long YLOG2DEVREL(long y) const
- {
- if (y > 0)
- return (long)((double)(y) * m_scaleY + 0.5);
- else
- return (long)((double)(y) * m_scaleY - 0.5);
- }
-
- public:
-
- bool m_ok;
- bool m_colour;
-
- // not sure, what these mean
- bool m_clipping; // Is clipping on right now ?
- bool m_isInteractive; // Is GetPixel possible ?
- bool m_autoSetting; // wxMSW only ?
- bool m_dontDelete; // wxMSW only ?
- bool m_optimize; // wxMSW only ?
- wxString m_filename; // Not sure where this belongs.
-
- wxPen m_pen;
- wxBrush m_brush;
- wxBrush m_backgroundBrush;
- wxColour m_textForegroundColour;
- wxColour m_textBackgroundColour;
- wxFont m_font;
-
- int m_logicalFunction;
- int m_backgroundMode;
- int m_textAlignment; // gone in wxWin 2.0 ?
-
- int m_mappingMode;
-
- // not sure what for, but what is a mm on a screen you don't know the size of?
- double m_mm_to_pix_x,m_mm_to_pix_y;
-
- long m_internalDeviceOriginX,m_internalDeviceOriginY; // If un-scrolled is non-zero or
- // d.o. changes with scrolling.
- // Set using SetInternalDeviceOrigin().
-
- long m_externalDeviceOriginX,m_externalDeviceOriginY; // To be set by external classes
- // such as wxScrolledWindow
- // using SetDeviceOrigin()
-
- long m_deviceOriginX,m_deviceOriginY; // Sum of the two above.
-
- long m_logicalOriginX,m_logicalOriginY; // User defined.
-
- double m_scaleX,m_scaleY;
- double m_logicalScaleX,m_logicalScaleY;
- double m_userScaleX,m_userScaleY;
- long m_signX,m_signY;
-
- bool m_needComputeScaleX,m_needComputeScaleY; // not yet used
-
- float m_scaleFactor; // wxPSDC wants to have this. Will disappear.
-
- long m_clipX1,m_clipY1,m_clipX2,m_clipY2;
- long m_minX,m_maxX,m_minY,m_maxY;
-};
+ virtual void DoGetSize(int *width, int *height) const;
+ virtual void DoGetSizeMM(int* width, int* height) const;
+
+ virtual void DoDrawLines(int n, wxPoint points[],
+ long xoffset, long yoffset);
+ virtual void DoDrawPolygon(int n, wxPoint points[],
+ long xoffset, long yoffset,
+ int fillStyle = wxODDEVEN_RULE);
+
+#if wxUSE_SPLINES
+ virtual void DoDrawSpline(wxList *points);
+#endif // wxUSE_SPLINES
+
+ // OS2-specific member variables
+ int m_windowExtX;
+ int m_windowExtY;
+ // the window associated with this DC (may be NULL)
+ wxWindow *m_canvas;
+
+ wxBitmap m_selectedBitmap;
+
+ // TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
+ bool m_bOwnsDC:1;
+
+ // our HDC and its usage count: we only free it when the usage count drops
+ // to 0
+ WXHDC m_hDC;
+ int m_hDCCount;
+
+ // Store all old GDI objects when do a SelectObject, so we can select them
+ // back in (this unselecting user's objects) so we can safely delete the
+ // DC.
+ WXHBITMAP m_oldBitmap;
+ WXHPEN m_oldPen;
+ WXHBRUSH m_oldBrush;
+ WXHFONT m_oldFont;
+ WXHPALETTE m_oldPalette;
+};
#endif
// _WX_DC_H_
projects / wxWidgets.git / blobdiff