d275c7eb84
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@11749 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
821 lines
27 KiB
C++
821 lines
27 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: dc.h
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// Purpose: wxDC class
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 05/25/99
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// RCS-ID: $Id$
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// Copyright: (c) wxWindows team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_DC_H_BASE_
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#define _WX_DC_H_BASE_
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#ifdef __GNUG__
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#pragma interface "dcbase.h"
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#endif
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// ----------------------------------------------------------------------------
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// headers which we must include here
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// ----------------------------------------------------------------------------
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#include "wx/object.h" // the base class
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#include "wx/cursor.h" // we have member variables of these classes
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#include "wx/font.h" // so we can't do without them
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#include "wx/colour.h"
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#include "wx/brush.h"
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#include "wx/pen.h"
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#include "wx/palette.h"
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#include "wx/list.h" // we use wxList in inline functions
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class WXDLLEXPORT wxDCBase;
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class WXDLLEXPORT wxDrawObject
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{
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public:
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wxDrawObject()
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{
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ResetBoundingBox();
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}
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virtual ~wxDrawObject() { }
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virtual void Draw(wxDCBase&) const { }
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virtual void CalcBoundingBox(wxCoord x, wxCoord y)
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{
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if ( m_isBBoxValid )
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{
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if ( x < m_minX ) m_minX = x;
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if ( y < m_minY ) m_minY = y;
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if ( x > m_maxX ) m_maxX = x;
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if ( y > m_maxY ) m_maxY = y;
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}
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else
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{
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m_isBBoxValid = TRUE;
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m_minX = x;
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m_minY = y;
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m_maxX = x;
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m_maxY = y;
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}
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}
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void ResetBoundingBox()
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{
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m_isBBoxValid = FALSE;
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m_minX = m_maxX = m_minY = m_maxY = 0;
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}
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// Get the final bounding box of the PostScript or Metafile picture.
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wxCoord MinX() const { return m_minX; }
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wxCoord MaxX() const { return m_maxX; }
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wxCoord MinY() const { return m_minY; }
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wxCoord MaxY() const { return m_maxY; }
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//to define the type of object for derived objects
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virtual int GetType()=0;
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protected:
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//for boundingbox calculation
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bool m_isBBoxValid:1;
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//for boundingbox calculation
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wxCoord m_minX, m_minY, m_maxX, m_maxY;
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};
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// ---------------------------------------------------------------------------
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// global variables
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// ---------------------------------------------------------------------------
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WXDLLEXPORT_DATA(extern int) wxPageNumber;
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// ---------------------------------------------------------------------------
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// wxDC is the device context - object on which any drawing is done
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// ---------------------------------------------------------------------------
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class WXDLLEXPORT wxDCBase : public wxObject
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{
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public:
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wxDCBase()
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{
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m_clipping = FALSE;
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m_ok = TRUE;
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ResetBoundingBox();
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m_signX = m_signY = 1;
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m_logicalOriginX = m_logicalOriginY =
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m_deviceOriginX = m_deviceOriginY = 0;
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m_logicalScaleX = m_logicalScaleY =
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m_userScaleX = m_userScaleY =
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m_scaleX = m_scaleY = 1.0;
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m_logicalFunction = wxCOPY;
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m_backgroundMode = wxTRANSPARENT;
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m_mappingMode = wxMM_TEXT;
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m_backgroundBrush = *wxTRANSPARENT_BRUSH;
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m_textForegroundColour = *wxBLACK;
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m_textBackgroundColour = *wxWHITE;
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m_colour = wxColourDisplay();
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}
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~wxDCBase() { }
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virtual void BeginDrawing() { }
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virtual void EndDrawing() { }
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// graphic primitives
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// ------------------
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virtual void DrawObject(wxDrawObject* drawobject)
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{
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drawobject->Draw(*this);
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CalcBoundingBox(drawobject->MinX(),drawobject->MinY());
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CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY());
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}
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void FloodFill(wxCoord x, wxCoord y, const wxColour& col,
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int style = wxFLOOD_SURFACE)
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{ DoFloodFill(x, y, col, style); }
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void FloodFill(const wxPoint& pt, const wxColour& col,
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int style = wxFLOOD_SURFACE)
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{ DoFloodFill(pt.x, pt.y, col, style); }
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bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const
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{ return DoGetPixel(x, y, col); }
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bool GetPixel(const wxPoint& pt, wxColour *col) const
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{ return DoGetPixel(pt.x, pt.y, col); }
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void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
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{ DoDrawLine(x1, y1, x2, y2); }
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void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
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{ DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); }
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void CrossHair(wxCoord x, wxCoord y)
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{ DoCrossHair(x, y); }
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void CrossHair(const wxPoint& pt)
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{ DoCrossHair(pt.x, pt.y); }
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void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2,
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wxCoord xc, wxCoord yc)
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{ DoDrawArc(x1, y1, x2, y2, xc, yc); }
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void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
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{ DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); }
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void DrawCheckMark(wxCoord x, wxCoord y,
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wxCoord width, wxCoord height)
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{ DoDrawCheckMark(x, y, width, height); }
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void DrawCheckMark(const wxRect& rect)
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{ DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); }
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void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
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double sa, double ea)
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{ DoDrawEllipticArc(x, y, w, h, sa, ea); }
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void DrawEllipticArc(const wxPoint& pt, const wxSize& sz,
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double sa, double ea)
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{ DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); }
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void DrawPoint(wxCoord x, wxCoord y)
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{ DoDrawPoint(x, y); }
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void DrawPoint(const wxPoint& pt)
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{ DoDrawPoint(pt.x, pt.y); }
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void DrawLines(int n, wxPoint points[],
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wxCoord xoffset = 0, wxCoord yoffset = 0)
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{ DoDrawLines(n, points, xoffset, yoffset); }
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void DrawLines(const wxList *list,
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wxCoord xoffset = 0, wxCoord yoffset = 0);
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void DrawPolygon(int n, wxPoint points[],
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wxCoord xoffset = 0, wxCoord yoffset = 0,
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int fillStyle = wxODDEVEN_RULE)
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{ DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); }
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void DrawPolygon(const wxList *list,
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wxCoord xoffset = 0, wxCoord yoffset = 0,
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int fillStyle = wxODDEVEN_RULE);
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void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
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{ DoDrawRectangle(x, y, width, height); }
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void DrawRectangle(const wxPoint& pt, const wxSize& sz)
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{ DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); }
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void DrawRectangle(const wxRect& rect)
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{ DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); }
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void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height,
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double radius)
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{ DoDrawRoundedRectangle(x, y, width, height, radius); }
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void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz,
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double radius)
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{ DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); }
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void DrawRoundedRectangle(const wxRect& r, double radius)
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{ DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); }
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void DrawCircle(wxCoord x, wxCoord y, wxCoord radius)
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{ DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); }
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void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
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{ DoDrawEllipse(x, y, width, height); }
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void DrawEllipse(const wxPoint& pt, const wxSize& sz)
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{ DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); }
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void DrawEllipse(const wxRect& rect)
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{ DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); }
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void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
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{ DoDrawIcon(icon, x, y); }
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void DrawIcon(const wxIcon& icon, const wxPoint& pt)
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{ DoDrawIcon(icon, pt.x, pt.y); }
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void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
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bool useMask = FALSE)
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{ DoDrawBitmap(bmp, x, y, useMask); }
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void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt,
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bool useMask = FALSE)
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{ DoDrawBitmap(bmp, pt.x, pt.y, useMask); }
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void DrawText(const wxString& text, wxCoord x, wxCoord y)
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{ DoDrawText(text, x, y); }
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void DrawText(const wxString& text, const wxPoint& pt)
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{ DoDrawText(text, pt.x, pt.y); }
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void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle)
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{ DoDrawRotatedText(text, x, y, angle); }
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void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle)
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{ DoDrawRotatedText(text, pt.x, pt.y, angle); }
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// this version puts both optional bitmap and the text into the given
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// rectangle and aligns is as specified by alignment parameter; it also
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// will emphasize the character with the given index if it is != -1 and
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// return the bounding rectangle if required
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virtual void DrawLabel(const wxString& text,
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const wxBitmap& image,
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const wxRect& rect,
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int alignment = wxALIGN_LEFT | wxALIGN_TOP,
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int indexAccel = -1,
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wxRect *rectBounding = NULL);
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void DrawLabel(const wxString& text, const wxRect& rect,
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int alignment = wxALIGN_LEFT | wxALIGN_TOP,
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int indexAccel = -1)
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{ DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); }
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bool Blit(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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{
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return DoBlit(xdest, ydest, width, height,
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source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask);
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}
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bool Blit(const wxPoint& destPt, const wxSize& sz,
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wxDC *source, const wxPoint& srcPt,
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int rop = wxCOPY, bool useMask = FALSE, const wxPoint& srcPtMask = wxPoint(-1, -1))
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{
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return DoBlit(destPt.x, destPt.y, sz.x, sz.y,
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source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y);
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}
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#if wxUSE_SPLINES
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// TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?)
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void DrawSpline(wxCoord x1, wxCoord y1,
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wxCoord x2, wxCoord y2,
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wxCoord x3, wxCoord y3);
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void DrawSpline(int n, wxPoint points[]);
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void DrawSpline(wxList *points) { DoDrawSpline(points); }
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#endif // wxUSE_SPLINES
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// global DC operations
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// --------------------
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virtual void Clear() = 0;
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virtual bool StartDoc(const wxString& WXUNUSED(message)) { return TRUE; }
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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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// set objects to use for drawing
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// ------------------------------
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virtual void SetFont(const wxFont& font) = 0;
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virtual void SetPen(const wxPen& pen) = 0;
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virtual void SetBrush(const wxBrush& brush) = 0;
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virtual void SetBackground(const wxBrush& brush) = 0;
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virtual void SetBackgroundMode(int mode) = 0;
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#if wxUSE_PALETTE
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virtual void SetPalette(const wxPalette& palette) = 0;
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#endif // wxUSE_PALETTE
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// clipping region
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// ---------------
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void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
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{ DoSetClippingRegion(x, y, width, height); }
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void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
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{ DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); }
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void SetClippingRegion(const wxRect& rect)
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{ DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); }
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void SetClippingRegion(const wxRegion& region)
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{ DoSetClippingRegionAsRegion(region); }
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virtual void DestroyClippingRegion() = 0;
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void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const
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{ DoGetClippingBox(x, y, w, h); }
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void GetClippingBox(wxRect& rect) const
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{
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// Necessary to use intermediate variables for 16-bit compilation
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wxCoord x, y, w, h;
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DoGetClippingBox(&x, &y, &w, &h);
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rect.x = x; rect.y = y; rect.width = w; rect.height = h;
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}
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// text extent
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// -----------
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virtual wxCoord GetCharHeight() const = 0;
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virtual wxCoord GetCharWidth() const = 0;
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// only works for single line strings
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void GetTextExtent(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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{ DoGetTextExtent(string, x, y, descent, externalLeading, theFont); }
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// works for single as well as multi-line strings
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virtual void GetMultiLineTextExtent(const wxString& text,
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wxCoord *width,
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wxCoord *height,
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wxCoord *heightLine = NULL,
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wxFont *font = NULL);
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// size and resolution
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// -------------------
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// in device units
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void GetSize(int *width, int *height) const
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{ DoGetSize(width, height); }
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wxSize GetSize() const
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{
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int w, h;
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DoGetSize(&w, &h);
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return wxSize(w, h);
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}
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// in mm
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void GetSizeMM(int* width, int* height) const
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{ DoGetSizeMM(width, height); }
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wxSize GetSizeMM() const
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{
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int w, h;
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DoGetSizeMM(&w, &h);
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return wxSize(w, h);
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}
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// coordinates conversions
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// -----------------------
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// This group of functions does actual conversion of the input, as you'd
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// expect.
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wxCoord DeviceToLogicalX(wxCoord x) const;
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wxCoord DeviceToLogicalY(wxCoord y) const;
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wxCoord DeviceToLogicalXRel(wxCoord x) const;
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wxCoord DeviceToLogicalYRel(wxCoord y) const;
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wxCoord LogicalToDeviceX(wxCoord x) const;
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wxCoord LogicalToDeviceY(wxCoord y) const;
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wxCoord LogicalToDeviceXRel(wxCoord x) const;
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wxCoord LogicalToDeviceYRel(wxCoord y) const;
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// query DC capabilities
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// ---------------------
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virtual bool CanDrawBitmap() const = 0;
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virtual bool CanGetTextExtent() const = 0;
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// colour depth
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virtual int GetDepth() const = 0;
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// Resolution in Pixels per inch
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virtual wxSize GetPPI() const = 0;
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virtual bool Ok() const { return m_ok; }
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// accessors
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// ---------
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// const...
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int GetBackgroundMode() const { return m_backgroundMode; }
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const wxBrush& GetBackground() const { return m_backgroundBrush; }
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const wxBrush& GetBrush() const { return m_brush; }
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const wxFont& GetFont() const { return m_font; }
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const wxPen& GetPen() const { return m_pen; }
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const wxColour& GetTextBackground() const { return m_textBackgroundColour; }
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const wxColour& GetTextForeground() const { return m_textForegroundColour; }
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// ... and non const
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wxBrush& GetBackground() { return m_backgroundBrush; }
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wxBrush& GetBrush() { return m_brush; }
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wxFont& GetFont() { return m_font; }
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wxPen& GetPen() { return m_pen; }
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wxColour& GetTextBackground() { return m_textBackgroundColour; }
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wxColour& GetTextForeground() { return m_textForegroundColour; }
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virtual void SetTextForeground(const wxColour& colour)
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{ m_textForegroundColour = colour; }
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virtual void SetTextBackground(const wxColour& colour)
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{ m_textBackgroundColour = colour; }
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int GetMapMode() const { return m_mappingMode; }
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virtual void SetMapMode(int mode) = 0;
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virtual void GetUserScale(double *x, double *y) const
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{
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if ( x ) *x = m_userScaleX;
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if ( y ) *y = m_userScaleY;
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}
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virtual void SetUserScale(double x, double y) = 0;
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virtual void GetLogicalScale(double *x, double *y)
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{
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if ( x ) *x = m_logicalScaleX;
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if ( y ) *y = m_logicalScaleY;
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}
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virtual void SetLogicalScale(double x, double y)
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{
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m_logicalScaleX = x;
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m_logicalScaleY = y;
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}
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void GetLogicalOrigin(wxCoord *x, wxCoord *y) const
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{ DoGetLogicalOrigin(x, y); }
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wxPoint GetLogicalOrigin() const
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{ wxCoord x, y; DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); }
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virtual void SetLogicalOrigin(wxCoord x, wxCoord y) = 0;
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void GetDeviceOrigin(wxCoord *x, wxCoord *y) const
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{ DoGetDeviceOrigin(x, y); }
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wxPoint GetDeviceOrigin() const
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{ wxCoord x, y; DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); }
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virtual void SetDeviceOrigin(wxCoord x, wxCoord y) = 0;
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virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp) = 0;
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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; }
|
|
|
|
// Some platforms have a DC cache, which should be cleared
|
|
// at appropriate points such as after a series of DC operations.
|
|
// Put ClearCache in the wxDC implementation class, since it has to be
|
|
// static.
|
|
// static void ClearCache() ;
|
|
#if 0 // wxUSE_DC_CACHEING
|
|
static void EnableCache(bool cacheing) { sm_cacheing = cacheing; }
|
|
static bool CacheEnabled() { return sm_cacheing ; }
|
|
#endif
|
|
|
|
// 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
|
|
#ifndef __WIN16__
|
|
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;
|
|
}
|
|
#endif // !Win16
|
|
|
|
#if WXWIN_COMPATIBILITY
|
|
|
|
#if wxUSE_PALETTE
|
|
virtual void SetColourMap(const wxPalette& palette) { SetPalette(palette); }
|
|
#endif // wxUSE_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(wxCoord x, wxCoord y, const wxColour& col,
|
|
int style = wxFLOOD_SURFACE) = 0;
|
|
|
|
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 = -1, wxCoord ysrcMask = -1) = 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[],
|
|
wxCoord xoffset, wxCoord yoffset) = 0;
|
|
virtual void DoDrawPolygon(int n, wxPoint points[],
|
|
wxCoord xoffset, wxCoord yoffset,
|
|
int fillStyle = wxODDEVEN_RULE) = 0;
|
|
|
|
virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0;
|
|
virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
|
|
wxCoord width, wxCoord height) = 0;
|
|
|
|
// FIXME are these functions really different?
|
|
virtual void DoGetClippingRegion(wxCoord *x, wxCoord *y,
|
|
wxCoord *w, wxCoord *h)
|
|
{ DoGetClippingBox(x, y, w, h); }
|
|
virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
|
|
wxCoord *w, wxCoord *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(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;
|
|
|
|
#if wxUSE_SPLINES
|
|
virtual void DoDrawSpline(wxList *points);
|
|
#endif
|
|
|
|
protected:
|
|
// flags
|
|
bool m_colour:1;
|
|
bool m_ok:1;
|
|
bool m_clipping:1;
|
|
bool m_isInteractive:1;
|
|
bool m_isBBoxValid:1;
|
|
#if wxUSE_DC_CACHEING
|
|
// static bool sm_cacheing;
|
|
#endif
|
|
|
|
// 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;
|
|
#endif // wxUSE_PALETTE
|
|
|
|
private:
|
|
DECLARE_NO_COPY_CLASS(wxDCBase)
|
|
DECLARE_ABSTRACT_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(__WXMGL__)
|
|
#include "wx/mgl/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
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// 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) { }
|
|
|
|
~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;
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// 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 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;
|
|
};
|
|
|
|
#endif
|
|
// _WX_DC_H_BASE_
|