X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c801d85f158c4cba50b588807daabdcbd0ed3853..f8c4475a3e579655f6a962822824596a7a9cfb66:/include/wx/dc.h?ds=sidebyside diff --git a/include/wx/dc.h b/include/wx/dc.h index be0b417d98..90fd7f6c94 100644 --- a/include/wx/dc.h +++ b/include/wx/dc.h @@ -1,13 +1,558 @@ -#ifndef __DCH_BASE__ -#define __DCH_BASE__ +///////////////////////////////////////////////////////////////////////////// +// Name: dc.h +// Purpose: wxDC class +// Author: Vadim Zeitlin +// Modified by: +// Created: 05/25/99 +// RCS-ID: $Id$ +// Copyright: (c) wxWindows 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_ + +#ifdef __GNUG__ + #pragma interface "dcbase.h" +#endif + +// ---------------------------------------------------------------------------- +// headers which we must include here +// ---------------------------------------------------------------------------- + +#include "wx/object.h" // the base class + +#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/brush.h" +#include "wx/pen.h" +#include "wx/palette.h" + +#include "wx/list.h" // we use wxList in inline functions + +// --------------------------------------------------------------------------- +// types +// --------------------------------------------------------------------------- + +// type which should be used (whenever possible, i.e. as long as it doesn't +// break compatibility) for screen coordinates +typedef int wxCoord; + +// --------------------------------------------------------------------------- +// global variables +// --------------------------------------------------------------------------- + +WXDLLEXPORT_DATA(extern int) wxPageNumber; + +// --------------------------------------------------------------------------- +// wxDC is the device context - object on which any drawing is done +// --------------------------------------------------------------------------- + +class WXDLLEXPORT wxDCBase : public wxObject +{ + DECLARE_ABSTRACT_CLASS(wxDCBase) + +public: + wxDCBase() + { + m_clipping = FALSE; + m_ok = TRUE; + + m_minX = m_minY = m_maxX = m_maxY = 0; + + m_signX = m_signY = 1; + + m_logicalOriginX = m_logicalOriginY = + m_deviceOriginX = m_deviceOriginY = 0; + + m_logicalScaleX = m_logicalScaleY = + m_userScaleX = m_userScaleY = + m_scaleX = m_scaleY = 1.0; + + m_logicalFunction = -1; + + m_backgroundMode = wxTRANSPARENT; + + m_mappingMode = wxMM_TEXT; + + m_backgroundBrush = *wxTRANSPARENT_BRUSH; + + m_textForegroundColour = *wxBLACK; + m_textBackgroundColour = *wxWHITE; + + m_colour = wxColourDisplay(); + } + + ~wxDCBase() { } + + virtual void BeginDrawing() { } + virtual void EndDrawing() { } + + // graphic primitives + // ------------------ + + void FloodFill(long x, long y, const wxColour& col, + int style = wxFLOOD_SURFACE) + { DoFloodFill(x, y, col, style); } + void FloodFill(const wxPoint& pt, const wxColour& col, + int style = wxFLOOD_SURFACE) + { DoFloodFill(pt.x, pt.y, col, style); } + + bool GetPixel(long x, long 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(long x1, long y1, long x2, long 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(long x, long y) + { DoCrossHair(x, y); } + void CrossHair(const wxPoint& pt) + { DoCrossHair(pt.x, pt.y); } + + void DrawArc(long x1, long y1, long x2, long y2, long xc, long 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 DrawEllipticArc(long x, long y, long w, long 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(long x, long y) + { DoDrawPoint(x, y); } + void DrawPoint(const wxPoint& pt) + { DoDrawPoint(pt.x, pt.y); } + + void DrawLines(int n, wxPoint points[], long xoffset = 0, long yoffset = 0) + { DoDrawLines(n, points, xoffset, yoffset); } + void DrawLines(const wxList *list, long xoffset = 0, long yoffset = 0); + + void DrawPolygon(int n, wxPoint points[], + long xoffset = 0, long yoffset = 0, + int fillStyle = wxODDEVEN_RULE) + { DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); } + + void DrawPolygon(const wxList *list, + long xoffset = 0, long yoffset = 0, + int fillStyle = wxODDEVEN_RULE); + + void DrawRectangle(long x, long y, long width, long 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(long x, long y, long width, long 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(long x, long y, long radius) + { DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); } + void DrawEllipse(long x, long y, long width, long 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, long x, long y) + { DoDrawIcon(icon, x, y); } + void DrawIcon(const wxIcon& icon, const wxPoint& pt) + { DoDrawIcon(icon, pt.x, pt.y); } + + void DrawBitmap(const wxBitmap &bmp, long x, long 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, long x, long y) + { DoDrawText(text, x, y); } + void DrawText(const wxString& text, const wxPoint& pt) + { DoDrawText(text, pt.x, pt.y); } + + bool Blit(long xdest, long ydest, long width, long height, + wxDC *source, long xsrc, long ysrc, + int rop = wxCOPY, bool useMask = FALSE) + { + return DoBlit(xdest, ydest, width, height, + source, xsrc, ysrc, rop, useMask); + } + bool Blit(const wxPoint& destPt, const wxSize& sz, + wxDC *source, const wxPoint& srcPt, + int rop = wxCOPY, bool useMask = FALSE) + { + return DoBlit(destPt.x, destPt.y, sz.x, sz.y, + source, srcPt.x, srcPt.y, rop, useMask); + } + +#if wxUSE_SPLINES +// TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?) + void DrawSpline(long x1, long y1, long x2, long y2, long x3, long y3); + void DrawSpline(int n, wxPoint points[]); + + void DrawSpline(wxList *points) { DoDrawSpline(points); } +#endif // wxUSE_SPLINES + + // 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() { } + + // 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; + virtual void SetPalette(const wxPalette& palette) = 0; + + // clipping region + // --------------- + + void SetClippingRegion(long x, long y, long width, long 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() = 0; + + void GetClippingBox(long *x, long *y, long *w, long *h) const + { DoGetClippingBox(x, y, w, h); } + void GetClippingBox(wxRect& rect) const + { DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); } + + // text extent + // ----------- + + virtual long GetCharHeight() const = 0; + virtual long GetCharWidth() const = 0; + virtual void GetTextExtent(const wxString& string, + long *x, long *y, + long *descent = NULL, + long *externalLeading = NULL, + wxFont *theFont = NULL) const = 0; + + // 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. + long DeviceToLogicalX(long x) const; + long DeviceToLogicalY(long y) const; + long DeviceToLogicalXRel(long x) const; + long DeviceToLogicalYRel(long y) const; + long LogicalToDeviceX(long x) const; + long LogicalToDeviceY(long y) const; + long LogicalToDeviceXRel(long x) const; + long LogicalToDeviceYRel(long 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 m_ok; } + + // accessors + // --------- + + // const... + const wxBrush& GetBackground() const { return m_backgroundBrush; } + const wxBrush& GetBrush() const { return m_brush; } + const wxFont& GetFont() const { return m_font; } + const wxPen& GetPen() const { return m_pen; } + const wxColour& GetTextBackground() const { return m_textBackgroundColour; } + const wxColour& GetTextForeground() const { return m_textForegroundColour; } + + // ... and non const + wxBrush& GetBackground() { return m_backgroundBrush; } + wxBrush& GetBrush() { return m_brush; } + wxFont& GetFont() { return m_font; } + wxPen& GetPen() { return m_pen; } + wxColour& GetTextBackground() { return m_textBackgroundColour; } + wxColour& GetTextForeground() { return m_textForegroundColour; } + + virtual void SetTextForeground(const wxColour& colour) + { m_textForegroundColour = colour; } + virtual void SetTextBackground(const wxColour& colour) + { m_textBackgroundColour = colour; } + + 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(long *x, long *y) const + { DoGetLogicalOrigin(x, y); } + wxPoint GetLogicalOrigin() const + { long x, y; DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); } + virtual void SetLogicalOrigin(long x, long y) = 0; + + void GetDeviceOrigin(long *x, long *y) const + { DoGetDeviceOrigin(x, y); } + wxPoint GetDeviceOrigin() const + { long x, y; DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); } + virtual void SetDeviceOrigin(long x, long y) = 0; + + virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp) = 0; + + int GetLogicalFunction() const { return m_logicalFunction; } + virtual void SetLogicalFunction(int function) = 0; + + // Sometimes we need to override optimization, e.g. if other software is + // drawing onto our surface and we can't be sure of who's done what. + // + // FIXME: is this (still) used? + virtual void SetOptimization(bool WXUNUSED(opt)) { } + virtual bool GetOptimization() { return FALSE; } + + // bounding box + // ------------ + + virtual void CalcBoundingBox(long x, long y) + { + 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; + } + + // Get the final bounding box of the PostScript or Metafile picture. + long MinX() const { return m_minX; } + long MaxX() const { return m_maxX; } + long MinY() const { return m_minY; } + long MaxY() const { return m_maxY; } + + // misc old functions + // ------------------ + +#if WXWIN_COMPATIBILITY + virtual void SetColourMap(const wxPalette& palette) { SetPalette(palette); } + void GetTextExtent(const wxString& string, float *x, float *y, + float *descent = NULL, float *externalLeading = NULL, + wxFont *theFont = NULL, bool use16bit = FALSE) const ; + void GetSize(float* width, float* height) const { int w, h; GetSize(& w, & h); *width = w; *height = h; } + void GetSizeMM(float *width, float *height) const { long w, h; GetSizeMM(& w, & h); *width = (float) w; *height = (float) h; } +#endif // WXWIN_COMPATIBILITY + +protected: + // the pure virtual functions which should be implemented by wxDC + virtual void DoFloodFill(long x, long y, const wxColour& col, + int style = wxFLOOD_SURFACE) = 0; + + virtual bool DoGetPixel(long x, long y, wxColour *col) const = 0; + + virtual void DoDrawPoint(long x, long y) = 0; + virtual void DoDrawLine(long x1, long y1, long x2, long y2) = 0; + + virtual void DoDrawArc(long x1, long y1, + long x2, long y2, + long xc, long yc) = 0; + virtual void DoDrawEllipticArc(long x, long y, long w, long h, + double sa, double ea) = 0; + + virtual void DoDrawRectangle(long x, long y, long width, long height) = 0; + virtual void DoDrawRoundedRectangle(long x, long y, + long width, long height, + double radius) = 0; + virtual void DoDrawEllipse(long x, long y, long width, long height) = 0; + + virtual void DoCrossHair(long x, long y) = 0; + + virtual void DoDrawIcon(const wxIcon& icon, long x, long y) = 0; + virtual void DoDrawBitmap(const wxBitmap &bmp, long x, long y, + bool useMask = FALSE) = 0; + + virtual void DoDrawText(const wxString& text, long x, long y) = 0; + + virtual bool DoBlit(long xdest, long ydest, long width, long height, + wxDC *source, long xsrc, long ysrc, + int rop = wxCOPY, bool useMask = FALSE) = 0; + + 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[], + long xoffset, long yoffset) = 0; + virtual void DoDrawPolygon(int n, wxPoint points[], + long xoffset, long yoffset, + int fillStyle = wxODDEVEN_RULE) = 0; + + virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0; + virtual void DoSetClippingRegion(long x, long y, + long width, long height) = 0; + + // FIXME are these functions really different? + virtual void DoGetClippingRegion(long *x, long *y, + long *w, long *h) + { DoGetClippingBox(x, y, w, h); } + virtual void DoGetClippingBox(long *x, long *y, + long *w, long *h) const + { + if ( m_clipping ) + { + if ( x ) *x = m_clipX1; + if ( y ) *y = m_clipY1; + if ( w ) *w = m_clipX2 - m_clipX1; + if ( h ) *h = m_clipY2 - m_clipY1; + } + else + { + *x = *y = *w = *h = 0; + } + } + + virtual void DoGetLogicalOrigin(long *x, long *y) const + { + if ( x ) *x = m_logicalOriginX; + if ( y ) *y = m_logicalOriginY; + } + + virtual void DoGetDeviceOrigin(long *x, long *y) const + { + if ( x ) *x = m_deviceOriginX; + if ( y ) *y = m_deviceOriginY; + } + +#if wxUSE_SPLINES + virtual void DoDrawSpline(wxList *points) = 0; +#endif + +protected: + // flags + bool m_colour:1; + bool m_ok:1; + bool m_clipping:1; + bool m_isInteractive:1; + + // coordinate system variables + + // TODO short descriptions of what exactly they are would be nice... + + long m_logicalOriginX, m_logicalOriginY; + long 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 + long m_minX, m_minY, m_maxX, m_maxY; + long 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; + wxPalette m_palette; + +private: + DECLARE_NO_COPY_CLASS(wxDCBase); +}; + +// ---------------------------------------------------------------------------- +// now include the declaration of wxDC class +// ---------------------------------------------------------------------------- + +#if defined(__WXMSW__) + #include "wx/msw/dc.h" +#elif defined(__WXMOTIF__) + #include "wx/motif/dc.h" +#elif defined(__WXGTK__) + #include "wx/gtk/dc.h" +#elif defined(__WXQT__) + #include "wx/qt/dc.h" +#elif defined(__WXMAC__) + #include "wx/mac/dc.h" +#elif defined(__WXPM__) + #include "wx/os2/dc.h" +#elif defined(__WXSTUBS__) + #include "wx/stubs/dc.h" #endif #endif - // __DCH_BASE__ + // _WX_DC_H_BASE_