X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c801d85f158c4cba50b588807daabdcbd0ed3853..5064e6eff3ca35cb20130dc9e5e53fb3ac02127e:/include/wx/dc.h diff --git a/include/wx/dc.h b/include/wx/dc.h index be0b417d98..a846442f68 100644 --- a/include/wx/dc.h +++ b/include/wx/dc.h @@ -1,13 +1,1019 @@ -#ifndef __DCH_BASE__ -#define __DCH_BASE__ +///////////////////////////////////////////////////////////////////////////// +// Name: wx/dc.h +// Purpose: wxDC class +// Author: Vadim Zeitlin +// Modified by: +// Created: 05/25/99 +// RCS-ID: $Id$ +// Copyright: (c) wxWidgets team +// Licence: wxWindows licence +///////////////////////////////////////////////////////////////////////////// -#if defined(__WINDOWS__) -#include "wx/msw/dc.h" -#elif defined(__MOTIF__) -#include "wx/xt/dc.h" -#elif defined(__GTK__) -#include "wx/gtk/dc.h" +#ifndef _WX_DC_H_BASE_ +#define _WX_DC_H_BASE_ + +// ---------------------------------------------------------------------------- +// headers which we must include here +// ---------------------------------------------------------------------------- + +#include "wx/object.h" // the base class + +#include "wx/intl.h" // for wxLayoutDirection +#include "wx/cursor.h" // we have member variables of these classes +#include "wx/font.h" // so we can't do without them +#include "wx/colour.h" +#include "wx/bitmap.h" // for wxNullBitmap +#include "wx/brush.h" +#include "wx/pen.h" +#include "wx/palette.h" +#include "wx/list.h" // we use wxList in inline functions +#include "wx/dynarray.h" +#include "wx/math.h" + +class WXDLLEXPORT wxDC; +class WXDLLEXPORT wxDCBase; + +class WXDLLEXPORT wxDrawObject +{ +public: + + wxDrawObject() + : m_isBBoxValid(false) + , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0) + { } + + virtual ~wxDrawObject() { } + + virtual void Draw(wxDCBase&) const { } + + virtual void CalcBoundingBox(wxCoord x, wxCoord y) + { + if ( m_isBBoxValid ) + { + if ( x < m_minX ) m_minX = x; + if ( y < m_minY ) m_minY = y; + if ( x > m_maxX ) m_maxX = x; + if ( y > m_maxY ) m_maxY = y; + } + else + { + m_isBBoxValid = true; + + m_minX = x; + m_minY = y; + m_maxX = x; + m_maxY = y; + } + } + + void ResetBoundingBox() + { + m_isBBoxValid = false; + + m_minX = m_maxX = m_minY = m_maxY = 0; + } + + // Get the final bounding box of the PostScript or Metafile picture. + + wxCoord MinX() const { return m_minX; } + wxCoord MaxX() const { return m_maxX; } + wxCoord MinY() const { return m_minY; } + wxCoord MaxY() const { return m_maxY; } + + //to define the type of object for derived objects + virtual int GetType()=0; + +protected: + //for boundingbox calculation + bool m_isBBoxValid:1; + //for boundingbox calculation + wxCoord m_minX, m_minY, m_maxX, m_maxY; +}; + +// --------------------------------------------------------------------------- +// global variables +// --------------------------------------------------------------------------- + +// --------------------------------------------------------------------------- +// wxDC is the device context - object on which any drawing is done +// --------------------------------------------------------------------------- + +class WXDLLEXPORT wxDCBase : public wxObject +{ +public: + wxDCBase() + : m_colour(wxColourDisplay()) + , m_ok(true) + , m_clipping(false) + , m_isInteractive(0) + , m_isBBoxValid(false) + , m_logicalOriginX(0), m_logicalOriginY(0) + , m_deviceOriginX(0), m_deviceOriginY(0) + , m_logicalScaleX(1.0), m_logicalScaleY(1.0) + , m_userScaleX(1.0), m_userScaleY(1.0) + , m_scaleX(1.0), m_scaleY(1.0) + , m_signX(1), m_signY(1) + , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0) + , m_clipX1(0), m_clipY1(0), m_clipX2(0), m_clipY2(0) + , m_logicalFunction(wxCOPY) + , m_backgroundMode(wxTRANSPARENT) + , m_mappingMode(wxMM_TEXT) + , m_pen() + , m_brush() + , m_backgroundBrush(*wxTRANSPARENT_BRUSH) + , m_textForegroundColour(*wxBLACK) + , m_textBackgroundColour(*wxWHITE) + , m_font() +#if wxUSE_PALETTE + , m_palette() + , m_hasCustomPalette(false) +#endif // wxUSE_PALETTE + { + ResetBoundingBox(); + ResetClipping(); + } + + virtual ~wxDCBase() { } + + // graphic primitives + // ------------------ + + virtual void DrawObject(wxDrawObject* drawobject) + { + drawobject->Draw(*this); + CalcBoundingBox(drawobject->MinX(),drawobject->MinY()); + CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY()); + } + + bool FloodFill(wxCoord x, wxCoord y, const wxColour& col, + int style = wxFLOOD_SURFACE) + { return DoFloodFill(x, y, col, style); } + bool FloodFill(const wxPoint& pt, const wxColour& col, + int style = wxFLOOD_SURFACE) + { return DoFloodFill(pt.x, pt.y, col, style); } + + // fill the area specified by rect with a radial gradient, starting from + // initialColour in the centre of the cercle and fading to destColour. + void GradientFillConcentric(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour) + { GradientFillConcentric(rect, initialColour, destColour, + wxPoint(rect.GetWidth() / 2, + rect.GetHeight() / 2)); } + + void GradientFillConcentric(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + const wxPoint& circleCenter) + { DoGradientFillConcentric(rect, initialColour, destColour, circleCenter); } + + // fill the area specified by rect with a linear gradient + void GradientFillLinear(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + wxDirection nDirection = wxEAST) + { DoGradientFillLinear(rect, initialColour, destColour, nDirection); } + + bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const + { return DoGetPixel(x, y, col); } + bool GetPixel(const wxPoint& pt, wxColour *col) const + { return DoGetPixel(pt.x, pt.y, col); } + + void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) + { DoDrawLine(x1, y1, x2, y2); } + void DrawLine(const wxPoint& pt1, const wxPoint& pt2) + { DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); } + + void CrossHair(wxCoord x, wxCoord y) + { DoCrossHair(x, y); } + void CrossHair(const wxPoint& pt) + { DoCrossHair(pt.x, pt.y); } + + void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, + wxCoord xc, wxCoord yc) + { DoDrawArc(x1, y1, x2, y2, xc, yc); } + void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre) + { DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); } + + void DrawCheckMark(wxCoord x, wxCoord y, + wxCoord width, wxCoord height) + { DoDrawCheckMark(x, y, width, height); } + void DrawCheckMark(const wxRect& rect) + { DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); } + + void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, + double sa, double ea) + { DoDrawEllipticArc(x, y, w, h, sa, ea); } + void DrawEllipticArc(const wxPoint& pt, const wxSize& sz, + double sa, double ea) + { DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); } + + void DrawPoint(wxCoord x, wxCoord y) + { DoDrawPoint(x, y); } + void DrawPoint(const wxPoint& pt) + { DoDrawPoint(pt.x, pt.y); } + + void DrawLines(int n, wxPoint points[], + wxCoord xoffset = 0, wxCoord yoffset = 0) + { DoDrawLines(n, points, xoffset, yoffset); } + void DrawLines(const wxList *list, + wxCoord xoffset = 0, wxCoord yoffset = 0); + + void DrawPolygon(int n, wxPoint points[], + wxCoord xoffset = 0, wxCoord yoffset = 0, + int fillStyle = wxODDEVEN_RULE) + { DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); } + + void DrawPolygon(const wxList *list, + wxCoord xoffset = 0, wxCoord yoffset = 0, + int fillStyle = wxODDEVEN_RULE); + + void DrawPolyPolygon(int n, int count[], wxPoint points[], + wxCoord xoffset = 0, wxCoord yoffset = 0, + int fillStyle = wxODDEVEN_RULE) + { DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); } + + void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) + { DoDrawRectangle(x, y, width, height); } + void DrawRectangle(const wxPoint& pt, const wxSize& sz) + { DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); } + void DrawRectangle(const wxRect& rect) + { DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); } + + void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, + double radius) + { DoDrawRoundedRectangle(x, y, width, height, radius); } + void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz, + double radius) + { DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); } + void DrawRoundedRectangle(const wxRect& r, double radius) + { DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); } + + void DrawCircle(wxCoord x, wxCoord y, wxCoord radius) + { DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); } + void DrawCircle(const wxPoint& pt, wxCoord radius) + { DrawCircle(pt.x, pt.y, radius); } + + void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) + { DoDrawEllipse(x, y, width, height); } + void DrawEllipse(const wxPoint& pt, const wxSize& sz) + { DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); } + void DrawEllipse(const wxRect& rect) + { DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); } + + void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) + { DoDrawIcon(icon, x, y); } + void DrawIcon(const wxIcon& icon, const wxPoint& pt) + { DoDrawIcon(icon, pt.x, pt.y); } + + void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, + bool useMask = false) + { DoDrawBitmap(bmp, x, y, useMask); } + void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt, + bool useMask = false) + { DoDrawBitmap(bmp, pt.x, pt.y, useMask); } + + void DrawText(const wxString& text, wxCoord x, wxCoord y) + { DoDrawText(text, x, y); } + void DrawText(const wxString& text, const wxPoint& pt) + { DoDrawText(text, pt.x, pt.y); } + + void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle) + { DoDrawRotatedText(text, x, y, angle); } + void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle) + { DoDrawRotatedText(text, pt.x, pt.y, angle); } + + // this version puts both optional bitmap and the text into the given + // rectangle and aligns is as specified by alignment parameter; it also + // will emphasize the character with the given index if it is != -1 and + // return the bounding rectangle if required + virtual void DrawLabel(const wxString& text, + const wxBitmap& image, + const wxRect& rect, + int alignment = wxALIGN_LEFT | wxALIGN_TOP, + int indexAccel = -1, + wxRect *rectBounding = NULL); + + void DrawLabel(const wxString& text, const wxRect& rect, + int alignment = wxALIGN_LEFT | wxALIGN_TOP, + int indexAccel = -1) + { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); } + + bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, + wxDC *source, wxCoord xsrc, wxCoord ysrc, + int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord) + { + return DoBlit(xdest, ydest, width, height, + source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask); + } + bool Blit(const wxPoint& destPt, const wxSize& sz, + wxDC *source, const wxPoint& srcPt, + int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition) + { + return DoBlit(destPt.x, destPt.y, sz.x, sz.y, + source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y); + } + + bool StretchBlit(wxCoord dstX, wxCoord dstY, + wxCoord dstWidth, wxCoord dstHeight, + wxDC *source, + wxCoord srcX, wxCoord srcY, + wxCoord srcWidth, wxCoord srcHeight, + int rop = wxCOPY, bool useMask = false, + wxCoord srcMaskX = wxDefaultCoord, wxCoord srcMaskY = wxDefaultCoord) + { + return DoStretchBlit(dstX, dstY, dstWidth, dstHeight, + source, srcX, srcY, srcWidth, srcHeight, rop, useMask, srcMaskX, srcMaskY); + } + bool StretchBlit(const wxPoint& dstPt, const wxSize& dstSize, + wxDC *source, const wxPoint& srcPt, const wxSize& srcSize, + int rop = wxCOPY, bool useMask = false, const wxPoint& srcMaskPt = wxDefaultPosition) + { + return DoStretchBlit(dstPt.x, dstPt.y, dstSize.x, dstSize.y, + source, srcPt.x, srcPt.y, srcSize.x, srcSize.y, rop, useMask, srcMaskPt.x, srcMaskPt.y); + } + + wxBitmap GetAsBitmap(const wxRect *subrect = (const wxRect *) NULL) const + { + return DoGetAsBitmap(subrect); + } + +#if wxUSE_SPLINES + // TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?) + void DrawSpline(wxCoord x1, wxCoord y1, + wxCoord x2, wxCoord y2, + wxCoord x3, wxCoord y3); + void DrawSpline(int n, wxPoint points[]); + + void DrawSpline(wxList *points) { DoDrawSpline(points); } +#endif // wxUSE_SPLINES + + // Eventually we will have wxUSE_GENERIC_DRAWELLIPSE +#ifdef __WXWINCE__ + //! Generic method to draw ellipses, circles and arcs with current pen and brush. + /*! \param x Upper left corner of bounding box. + * \param y Upper left corner of bounding box. + * \param w Width of bounding box. + * \param h Height of bounding box. + * \param sa Starting angle of arc + * (counterclockwise, start at 3 o'clock, 360 is full circle). + * \param ea Ending angle of arc. + * \param angle Rotation angle, the Arc will be rotated after + * calculating begin and end. + */ + void DrawEllipticArcRot( wxCoord x, wxCoord y, + wxCoord width, wxCoord height, + double sa = 0, double ea = 0, double angle = 0 ) + { DoDrawEllipticArcRot( x, y, width, height, sa, ea, angle ); } + + void DrawEllipticArcRot( const wxPoint& pt, + const wxSize& sz, + double sa = 0, double ea = 0, double angle = 0 ) + { DoDrawEllipticArcRot( pt.x, pt.y, sz.x, sz.y, sa, ea, angle ); } + + void DrawEllipticArcRot( const wxRect& rect, + double sa = 0, double ea = 0, double angle = 0 ) + { DoDrawEllipticArcRot( rect.x, rect.y, rect.width, rect.height, sa, ea, angle ); } + + virtual void DoDrawEllipticArcRot( wxCoord x, wxCoord y, + wxCoord w, wxCoord h, + double sa = 0, double ea = 0, double angle = 0 ); + + //! Rotates points around center. + /*! This is a quite straight method, it calculates in pixels + * and so it produces rounding errors. + * \param points The points inside will be rotated. + * \param angle Rotating angle (counterclockwise, start at 3 o'clock, 360 is full circle). + * \param center Center of rotation. + */ + void Rotate( wxList* points, double angle, wxPoint center = wxPoint(0,0) ); + + // used by DrawEllipticArcRot + // Careful: wxList gets filled with points you have to delete later. + void CalculateEllipticPoints( wxList* points, + wxCoord xStart, wxCoord yStart, + wxCoord w, wxCoord h, + double sa, double ea ); +#endif + + // global DC operations + // -------------------- + + virtual void Clear() = 0; + + virtual bool StartDoc(const wxString& WXUNUSED(message)) { return true; } + virtual void EndDoc() { } + + virtual void StartPage() { } + virtual void EndPage() { } + +#if WXWIN_COMPATIBILITY_2_6 + wxDEPRECATED( void BeginDrawing() ); + wxDEPRECATED( void EndDrawing() ); +#endif // WXWIN_COMPATIBILITY_2_6 + + + // set objects to use for drawing + // ------------------------------ + + virtual void SetFont(const wxFont& font) = 0; + virtual void SetPen(const wxPen& pen) = 0; + virtual void SetBrush(const wxBrush& brush) = 0; + virtual void SetBackground(const wxBrush& brush) = 0; + virtual void SetBackgroundMode(int mode) = 0; +#if wxUSE_PALETTE + virtual void SetPalette(const wxPalette& palette) = 0; +#endif // wxUSE_PALETTE + + // clipping region + // --------------- + + void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height) + { DoSetClippingRegion(x, y, width, height); } + void SetClippingRegion(const wxPoint& pt, const wxSize& sz) + { DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); } + void SetClippingRegion(const wxRect& rect) + { DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); } + void SetClippingRegion(const wxRegion& region) + { DoSetClippingRegionAsRegion(region); } + + virtual void DestroyClippingRegion() { ResetClipping(); } + + void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const + { DoGetClippingBox(x, y, w, h); } + void GetClippingBox(wxRect& rect) const + { + DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); + } + + // text extent + // ----------- + + virtual wxCoord GetCharHeight() const = 0; + virtual wxCoord GetCharWidth() const = 0; + + // only works for single line strings + void GetTextExtent(const wxString& string, + wxCoord *x, wxCoord *y, + wxCoord *descent = NULL, + wxCoord *externalLeading = NULL, + wxFont *theFont = NULL) const + { DoGetTextExtent(string, x, y, descent, externalLeading, theFont); } + + wxSize GetTextExtent(const wxString& string) const + { + wxCoord w, h; + DoGetTextExtent(string, &w, &h); + return wxSize(w, h); + } + + // works for single as well as multi-line strings + virtual void GetMultiLineTextExtent(const wxString& string, + wxCoord *width, + wxCoord *height, + wxCoord *heightLine = NULL, + wxFont *font = NULL) const; + + wxSize GetMultiLineTextExtent(const wxString& string) const + { + wxCoord w, h; + GetMultiLineTextExtent(string, &w, &h); + return wxSize(w, h); + } + + // Measure cumulative width of text after each character + bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const + { return DoGetPartialTextExtents(text, widths); } + + + // size and resolution + // ------------------- + + // in device units + void GetSize(int *width, int *height) const + { DoGetSize(width, height); } + wxSize GetSize() const + { + int w, h; + DoGetSize(&w, &h); + + return wxSize(w, h); + } + + // in mm + void GetSizeMM(int* width, int* height) const + { DoGetSizeMM(width, height); } + wxSize GetSizeMM() const + { + int w, h; + DoGetSizeMM(&w, &h); + + return wxSize(w, h); + } + + // coordinates conversions + // ----------------------- + + // This group of functions does actual conversion of the input, as you'd + // expect. + wxCoord DeviceToLogicalX(wxCoord x) const; + wxCoord DeviceToLogicalY(wxCoord y) const; + wxCoord DeviceToLogicalXRel(wxCoord x) const; + wxCoord DeviceToLogicalYRel(wxCoord y) const; + wxCoord LogicalToDeviceX(wxCoord x) const; + wxCoord LogicalToDeviceY(wxCoord y) const; + wxCoord LogicalToDeviceXRel(wxCoord x) const; + wxCoord LogicalToDeviceYRel(wxCoord y) const; + + // query DC capabilities + // --------------------- + + virtual bool CanDrawBitmap() const = 0; + virtual bool CanGetTextExtent() const = 0; + + // colour depth + virtual int GetDepth() const = 0; + + // Resolution in Pixels per inch + virtual wxSize GetPPI() const = 0; + + virtual bool Ok() const { return IsOk(); } + virtual bool IsOk() const { return m_ok; } + + // accessors and setters + // --------------------- + + virtual int GetBackgroundMode() const { return m_backgroundMode; } + virtual const wxBrush& GetBackground() const { return m_backgroundBrush; } + virtual const wxBrush& GetBrush() const { return m_brush; } + virtual const wxFont& GetFont() const { return m_font; } + virtual const wxPen& GetPen() const { return m_pen; } + + virtual const wxColour& GetTextForeground() const { return m_textForegroundColour; } + virtual const wxColour& GetTextBackground() const { return m_textBackgroundColour; } + virtual void SetTextForeground(const wxColour& colour) + { m_textForegroundColour = colour; } + virtual void SetTextBackground(const wxColour& colour) + { m_textBackgroundColour = colour; } + + virtual int GetMapMode() const { return m_mappingMode; } + virtual void SetMapMode(int mode) = 0; + + virtual void GetUserScale(double *x, double *y) const + { + if ( x ) *x = m_userScaleX; + if ( y ) *y = m_userScaleY; + } + virtual void SetUserScale(double x, double y) = 0; + + virtual void GetLogicalScale(double *x, double *y) + { + if ( x ) *x = m_logicalScaleX; + if ( y ) *y = m_logicalScaleY; + } + virtual void SetLogicalScale(double x, double y) + { + m_logicalScaleX = x; + m_logicalScaleY = y; + } + + void GetLogicalOrigin(wxCoord *x, wxCoord *y) const + { DoGetLogicalOrigin(x, y); } + wxPoint GetLogicalOrigin() const + { wxCoord x, y; DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); } + virtual void SetLogicalOrigin(wxCoord x, wxCoord y) = 0; + + void GetDeviceOrigin(wxCoord *x, wxCoord *y) const + { DoGetDeviceOrigin(x, y); } + wxPoint GetDeviceOrigin() const + { wxCoord x, y; DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); } + virtual void SetDeviceOrigin(wxCoord x, wxCoord y) = 0; + + virtual void ComputeScaleAndOrigin() {} + + virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp) = 0; + + virtual int GetLogicalFunction() const { return m_logicalFunction; } + virtual void SetLogicalFunction(int function) = 0; + + // bounding box + // ------------ + + virtual void CalcBoundingBox(wxCoord x, wxCoord y) + { + if ( m_isBBoxValid ) + { + if ( x < m_minX ) m_minX = x; + if ( y < m_minY ) m_minY = y; + if ( x > m_maxX ) m_maxX = x; + if ( y > m_maxY ) m_maxY = y; + } + else + { + m_isBBoxValid = true; + + m_minX = x; + m_minY = y; + m_maxX = x; + m_maxY = y; + } + } + + void ResetBoundingBox() + { + m_isBBoxValid = false; + + m_minX = m_maxX = m_minY = m_maxY = 0; + } + + // Get the final bounding box of the PostScript or Metafile picture. + wxCoord MinX() const { return m_minX; } + wxCoord MaxX() const { return m_maxX; } + wxCoord MinY() const { return m_minY; } + wxCoord MaxY() const { return m_maxY; } + + // misc old functions + // ------------------ + + // for compatibility with the old code when wxCoord was long everywhere + void GetTextExtent(const wxString& string, + long *x, long *y, + long *descent = NULL, + long *externalLeading = NULL, + wxFont *theFont = NULL) const + { + wxCoord x2, y2, descent2, externalLeading2; + DoGetTextExtent(string, &x2, &y2, + &descent2, &externalLeading2, + theFont); + if ( x ) + *x = x2; + if ( y ) + *y = y2; + if ( descent ) + *descent = descent2; + if ( externalLeading ) + *externalLeading = externalLeading2; + } + + void GetLogicalOrigin(long *x, long *y) const + { + wxCoord x2, y2; + DoGetLogicalOrigin(&x2, &y2); + if ( x ) + *x = x2; + if ( y ) + *y = y2; + } + + void GetDeviceOrigin(long *x, long *y) const + { + wxCoord x2, y2; + DoGetDeviceOrigin(&x2, &y2); + if ( x ) + *x = x2; + if ( y ) + *y = y2; + } + void GetClippingBox(long *x, long *y, long *w, long *h) const + { + wxCoord xx,yy,ww,hh; + DoGetClippingBox(&xx, &yy, &ww, &hh); + if (x) *x = xx; + if (y) *y = yy; + if (w) *w = ww; + if (h) *h = hh; + } + + // RTL related functions + // --------------------- + + // get or change the layout direction (LTR or RTL) for this dc, + // wxLayout_Default is returned if layout direction is not supported + virtual wxLayoutDirection GetLayoutDirection() const + { return wxLayout_Default; } + virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir)) + { } + +protected: + // the pure virtual functions which should be implemented by wxDC + virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, + int style = wxFLOOD_SURFACE) = 0; + + virtual void DoGradientFillLinear(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + wxDirection nDirection = wxEAST); + + virtual void DoGradientFillConcentric(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + const wxPoint& circleCenter); + + virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const = 0; + + virtual void DoDrawPoint(wxCoord x, wxCoord y) = 0; + virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) = 0; + + virtual void DoDrawArc(wxCoord x1, wxCoord y1, + wxCoord x2, wxCoord y2, + wxCoord xc, wxCoord yc) = 0; + virtual void DoDrawCheckMark(wxCoord x, wxCoord y, + wxCoord width, wxCoord height); + virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, + double sa, double ea) = 0; + + virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) = 0; + virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y, + wxCoord width, wxCoord height, + double radius) = 0; + virtual void DoDrawEllipse(wxCoord x, wxCoord y, + wxCoord width, wxCoord height) = 0; + + virtual void DoCrossHair(wxCoord x, wxCoord y) = 0; + + virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) = 0; + virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, + bool useMask = false) = 0; + + virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) = 0; + virtual void DoDrawRotatedText(const wxString& text, + wxCoord x, wxCoord y, double angle) = 0; + + virtual bool DoBlit(wxCoord xdest, wxCoord ydest, + wxCoord width, wxCoord height, + wxDC *source, + wxCoord xsrc, wxCoord ysrc, + int rop = wxCOPY, + bool useMask = false, + wxCoord xsrcMask = wxDefaultCoord, + wxCoord ysrcMask = wxDefaultCoord) = 0; + + virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest, + wxCoord dstWidth, wxCoord dstHeight, + wxDC *source, + wxCoord xsrc, wxCoord ysrc, + wxCoord srcWidth, wxCoord srcHeight, + int rop = wxCOPY, + bool useMask = false, + wxCoord xsrcMask = wxDefaultCoord, + wxCoord ysrcMask = wxDefaultCoord); + + virtual wxBitmap DoGetAsBitmap(const wxRect *WXUNUSED(subrect)) const + { return wxNullBitmap; } + + virtual void DoGetSize(int *width, int *height) const = 0; + virtual void DoGetSizeMM(int* width, int* height) const = 0; + + virtual void DoDrawLines(int n, wxPoint points[], + wxCoord xoffset, wxCoord yoffset) = 0; + virtual void DoDrawPolygon(int n, wxPoint points[], + wxCoord xoffset, wxCoord yoffset, + int fillStyle = wxODDEVEN_RULE) = 0; + virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[], + wxCoord xoffset, wxCoord yoffset, + int fillStyle); + + virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0; + virtual void DoSetClippingRegion(wxCoord x, wxCoord y, + wxCoord width, wxCoord height) = 0; + + virtual void DoGetClippingBox(wxCoord *x, wxCoord *y, + wxCoord *w, wxCoord *h) const + { + if ( x ) + *x = m_clipX1; + if ( y ) + *y = m_clipY1; + if ( w ) + *w = m_clipX2 - m_clipX1; + if ( h ) + *h = m_clipY2 - m_clipY1; + } + + virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const + { + if ( x ) *x = m_logicalOriginX; + if ( y ) *y = m_logicalOriginY; + } + + virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const + { + if ( x ) *x = m_deviceOriginX; + if ( y ) *y = m_deviceOriginY; + } + + virtual void DoGetTextExtent(const wxString& string, + wxCoord *x, wxCoord *y, + wxCoord *descent = NULL, + wxCoord *externalLeading = NULL, + wxFont *theFont = NULL) const = 0; + + virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const; + +#if wxUSE_SPLINES + virtual void DoDrawSpline(wxList *points); +#endif + +protected: + // unset clipping variables (after clipping region was destroyed) + void ResetClipping() + { + m_clipping = false; + + m_clipX1 = m_clipX2 = m_clipY1 = m_clipY2 = 0; + } + + // flags + bool m_colour:1; + bool m_ok:1; + bool m_clipping:1; + bool m_isInteractive:1; + bool m_isBBoxValid:1; + + // coordinate system variables + + // TODO short descriptions of what exactly they are would be nice... + + wxCoord m_logicalOriginX, m_logicalOriginY; + wxCoord m_deviceOriginX, m_deviceOriginY; + + double m_logicalScaleX, m_logicalScaleY; + double m_userScaleX, m_userScaleY; + double m_scaleX, m_scaleY; + + // Used by SetAxisOrientation() to invert the axes + int m_signX, m_signY; + + // bounding and clipping boxes + wxCoord m_minX, m_minY, m_maxX, m_maxY; + wxCoord m_clipX1, m_clipY1, m_clipX2, m_clipY2; + + int m_logicalFunction; + int m_backgroundMode; + int m_mappingMode; + + // GDI objects + wxPen m_pen; + wxBrush m_brush; + wxBrush m_backgroundBrush; + wxColour m_textForegroundColour; + wxColour m_textBackgroundColour; + wxFont m_font; + +#if wxUSE_PALETTE + wxPalette m_palette; + bool m_hasCustomPalette; +#endif // wxUSE_PALETTE + +private: + DECLARE_NO_COPY_CLASS(wxDCBase) + DECLARE_ABSTRACT_CLASS(wxDCBase) +}; + +// ---------------------------------------------------------------------------- +// now include the declaration of wxDC class +// ---------------------------------------------------------------------------- + +#if defined(__WXPALMOS__) + #include "wx/palmos/dc.h" +#elif defined(__WXMSW__) + #include "wx/msw/dc.h" +#elif defined(__WXMOTIF__) + #include "wx/motif/dc.h" +#elif defined(__WXGTK20__) + #include "wx/gtk/dc.h" +#elif defined(__WXGTK__) + #include "wx/gtk1/dc.h" +#elif defined(__WXX11__) + #include "wx/x11/dc.h" +#elif defined(__WXMGL__) + #include "wx/mgl/dc.h" +#elif defined(__WXDFB__) + #include "wx/dfb/dc.h" +#elif defined(__WXMAC__) + #include "wx/mac/dc.h" +#elif defined(__WXCOCOA__) + #include "wx/cocoa/dc.h" +#elif defined(__WXPM__) + #include "wx/os2/dc.h" #endif +#if wxUSE_GRAPHICS_CONTEXT + #include "wx/dcgraph.h" #endif - // __DCH_BASE__ + +// ---------------------------------------------------------------------------- +// helper class: you can use it to temporarily change the DC text colour and +// restore it automatically when the object goes out of scope +// ---------------------------------------------------------------------------- + +class WXDLLEXPORT wxDCTextColourChanger +{ +public: + wxDCTextColourChanger(wxDC& dc) : m_dc(dc), m_colFgOld() { } + + wxDCTextColourChanger(wxDC& dc, const wxColour& col) : m_dc(dc) + { + Set(col); + } + + ~wxDCTextColourChanger() + { + if ( m_colFgOld.Ok() ) + m_dc.SetTextForeground(m_colFgOld); + } + + void Set(const wxColour& col) + { + if ( !m_colFgOld.Ok() ) + m_colFgOld = m_dc.GetTextForeground(); + m_dc.SetTextForeground(col); + } + +private: + wxDC& m_dc; + + wxColour m_colFgOld; + + DECLARE_NO_COPY_CLASS(wxDCTextColourChanger) +}; + +// ---------------------------------------------------------------------------- +// helper class: you can use it to temporarily change the DC pen and +// restore it automatically when the object goes out of scope +// ---------------------------------------------------------------------------- + +class WXDLLEXPORT wxDCPenChanger +{ +public: + wxDCPenChanger(wxDC& dc, const wxPen& pen) : m_dc(dc), m_penOld(dc.GetPen()) + { + m_dc.SetPen(pen); + } + + ~wxDCPenChanger() + { + if ( m_penOld.Ok() ) + m_dc.SetPen(m_penOld); + } + +private: + wxDC& m_dc; + + wxPen m_penOld; + + DECLARE_NO_COPY_CLASS(wxDCPenChanger) +}; + +// ---------------------------------------------------------------------------- +// helper class: you can use it to temporarily change the DC brush and +// restore it automatically when the object goes out of scope +// ---------------------------------------------------------------------------- + +class WXDLLEXPORT wxDCBrushChanger +{ +public: + wxDCBrushChanger(wxDC& dc, const wxBrush& brush) : m_dc(dc), m_brushOld(dc.GetBrush()) + { + m_dc.SetBrush(brush); + } + + ~wxDCBrushChanger() + { + if ( m_brushOld.Ok() ) + m_dc.SetBrush(m_brushOld); + } + +private: + wxDC& m_dc; + + wxBrush m_brushOld; + + DECLARE_NO_COPY_CLASS(wxDCBrushChanger) +}; + +// ---------------------------------------------------------------------------- +// another small helper class: sets the clipping region in its ctor and +// destroys it in the dtor +// ---------------------------------------------------------------------------- + +class WXDLLEXPORT wxDCClipper +{ +public: + wxDCClipper(wxDC& dc, const wxRegion& r) : m_dc(dc) + { dc.SetClippingRegion(r); } + wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc) + { dc.SetClippingRegion(r.x, r.y, r.width, r.height); } + wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc) + { dc.SetClippingRegion(x, y, w, h); } + + ~wxDCClipper() { m_dc.DestroyClippingRegion(); } + +private: + wxDC& m_dc; + + DECLARE_NO_COPY_CLASS(wxDCClipper) +}; + +#endif // _WX_DC_H_BASE_