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332 lines
11 KiB
C++
332 lines
11 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/dcsvg.h
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// Purpose: wxSVGFileDC
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// Author: Chris Elliott
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// Modified by:
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// Created:
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// Copyright: (c) Chris Elliott
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_DCSVG_H_
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#define _WX_DCSVG_H_
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#if wxUSE_SVG
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#include "wx/string.h"
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#include "wx/filename.h"
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#include "wx/dc.h"
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#include "wx/scopedptr.h"
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#define wxSVGVersion wxT("v0101")
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enum wxSVGShapeRenderingMode
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{
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wxSVG_SHAPE_RENDERING_AUTO = 0,
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wxSVG_SHAPE_RENDERING_OPTIMIZE_SPEED,
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wxSVG_SHAPE_RENDERING_CRISP_EDGES,
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wxSVG_SHAPE_RENDERING_GEOMETRIC_PRECISION,
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wxSVG_SHAPE_RENDERING_OPTIMISE_SPEED = wxSVG_SHAPE_RENDERING_OPTIMIZE_SPEED
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};
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class WXDLLIMPEXP_FWD_BASE wxFileOutputStream;
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class WXDLLIMPEXP_FWD_CORE wxSVGFileDC;
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// Base class for bitmap handlers used by wxSVGFileDC, used by the standard
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// "embed" and "link" handlers below but can also be used to create a custom
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// handler.
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class WXDLLIMPEXP_CORE wxSVGBitmapHandler
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{
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public:
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// Write the representation of the given bitmap, appearing at the specified
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// position, to the provided stream.
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virtual bool ProcessBitmap(const wxBitmap& bitmap,
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wxCoord x, wxCoord y,
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wxOutputStream& stream) const = 0;
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virtual ~wxSVGBitmapHandler() {}
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};
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// Predefined standard bitmap handler: creates a file, stores the bitmap in
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// this file and uses the file name in the generated SVG.
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class WXDLLIMPEXP_CORE wxSVGBitmapFileHandler : public wxSVGBitmapHandler
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{
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public:
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wxSVGBitmapFileHandler()
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: m_path()
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{
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}
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explicit wxSVGBitmapFileHandler(const wxFileName& path)
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: m_path(path)
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{
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}
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virtual bool ProcessBitmap(const wxBitmap& bitmap,
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wxCoord x, wxCoord y,
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wxOutputStream& stream) const wxOVERRIDE;
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private:
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wxFileName m_path; // When set, name will be appended with _image#.png
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};
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// Predefined handler which embeds the bitmap (base64-encoding it) inside the
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// generated SVG file.
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class WXDLLIMPEXP_CORE wxSVGBitmapEmbedHandler : public wxSVGBitmapHandler
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{
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public:
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virtual bool ProcessBitmap(const wxBitmap& bitmap,
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wxCoord x, wxCoord y,
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wxOutputStream& stream) const wxOVERRIDE;
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};
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class WXDLLIMPEXP_CORE wxSVGFileDCImpl : public wxDCImpl
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{
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public:
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wxSVGFileDCImpl(wxSVGFileDC* owner, const wxString& filename,
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int width = 320, int height = 240, double dpi = 72.0,
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const wxString& title = wxString());
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virtual ~wxSVGFileDCImpl();
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bool IsOk() const wxOVERRIDE { return m_OK; }
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virtual bool CanDrawBitmap() const wxOVERRIDE { return true; }
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virtual bool CanGetTextExtent() const wxOVERRIDE { return true; }
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virtual int GetDepth() const wxOVERRIDE
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{
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wxFAIL_MSG(wxT("wxSVGFILEDC::GetDepth Call not implemented"));
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return -1;
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}
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virtual void Clear() wxOVERRIDE;
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virtual void DestroyClippingRegion() wxOVERRIDE;
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virtual wxCoord GetCharHeight() const wxOVERRIDE;
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virtual wxCoord GetCharWidth() const wxOVERRIDE;
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#if wxUSE_PALETTE
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virtual void SetPalette(const wxPalette& WXUNUSED(palette)) wxOVERRIDE
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{
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wxFAIL_MSG(wxT("wxSVGFILEDC::SetPalette not implemented"));
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}
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#endif
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virtual void SetLogicalFunction(wxRasterOperationMode WXUNUSED(function)) wxOVERRIDE
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{
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wxFAIL_MSG(wxT("wxSVGFILEDC::SetLogicalFunction Call not implemented"));
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}
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virtual wxRasterOperationMode GetLogicalFunction() const wxOVERRIDE
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{
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wxFAIL_MSG(wxT("wxSVGFILEDC::GetLogicalFunction() not implemented"));
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return wxCOPY;
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}
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virtual void SetLogicalOrigin(wxCoord x, wxCoord y) wxOVERRIDE
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{
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wxDCImpl::SetLogicalOrigin(x, y);
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m_graphics_changed = true;
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}
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virtual void SetDeviceOrigin(wxCoord x, wxCoord y) wxOVERRIDE
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{
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wxDCImpl::SetDeviceOrigin(x, y);
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m_graphics_changed = true;
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}
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virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp) wxOVERRIDE
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{
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wxDCImpl::SetAxisOrientation(xLeftRight, yBottomUp);
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m_graphics_changed = true;
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}
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virtual void SetBackground(const wxBrush& brush) wxOVERRIDE;
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virtual void SetBackgroundMode(int mode) wxOVERRIDE;
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virtual void SetBrush(const wxBrush& brush) wxOVERRIDE;
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virtual void SetFont(const wxFont& font) wxOVERRIDE;
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virtual void SetPen(const wxPen& pen) wxOVERRIDE;
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virtual void* GetHandle() const wxOVERRIDE { return NULL; }
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void SetBitmapHandler(wxSVGBitmapHandler* handler);
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void SetShapeRenderingMode(wxSVGShapeRenderingMode renderingMode);
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private:
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virtual bool DoGetPixel(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
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wxColour* WXUNUSED(col)) const wxOVERRIDE
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{
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wxFAIL_MSG(wxT("wxSVGFILEDC::DoGetPixel Call not implemented"));
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return true;
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}
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virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
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wxCoord width, wxCoord height,
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wxDC* source,
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wxCoord xsrc, wxCoord ysrc,
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wxRasterOperationMode rop,
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bool useMask = false,
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wxCoord xsrcMask = wxDefaultCoord,
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wxCoord ysrcMask = wxDefaultCoord) wxOVERRIDE;
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virtual void DoCrossHair(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y)) wxOVERRIDE
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{
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wxFAIL_MSG(wxT("wxSVGFILEDC::CrossHair Call not implemented"));
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}
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virtual void DoDrawArc(wxCoord x1, wxCoord y1,
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wxCoord x2, wxCoord y2,
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wxCoord xc, wxCoord yc) wxOVERRIDE;
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virtual void DoDrawBitmap(const wxBitmap& bmp, wxCoord x, wxCoord y,
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bool useMask = false) wxOVERRIDE;
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virtual void DoDrawEllipse(wxCoord x, wxCoord y,
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wxCoord width, wxCoord height) wxOVERRIDE;
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virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
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double sa, double ea) wxOVERRIDE;
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virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) wxOVERRIDE;
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virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) wxOVERRIDE;
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virtual void DoDrawLines(int n, const wxPoint points[],
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wxCoord xoffset, wxCoord yoffset) wxOVERRIDE;
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virtual void DoDrawPoint(wxCoord x, wxCoord y) wxOVERRIDE;
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virtual void DoDrawPolygon(int n, const wxPoint points[],
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wxCoord xoffset, wxCoord yoffset,
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wxPolygonFillMode fillStyle = wxODDEVEN_RULE) wxOVERRIDE;
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virtual void DoDrawPolyPolygon(int n, const int count[], const wxPoint points[],
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wxCoord xoffset, wxCoord yoffset,
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wxPolygonFillMode fillStyle) wxOVERRIDE;
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virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) wxOVERRIDE;
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virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
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double angle) wxOVERRIDE;
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virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
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wxCoord width, wxCoord height,
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double radius) wxOVERRIDE;
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virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) wxOVERRIDE;
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virtual bool DoFloodFill(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
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const wxColour& WXUNUSED(col),
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wxFloodFillStyle WXUNUSED(style)) wxOVERRIDE
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{
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wxFAIL_MSG(wxT("wxSVGFILEDC::DoFloodFill Call not implemented"));
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return false;
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}
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virtual void DoGradientFillLinear(const wxRect& rect,
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const wxColour& initialColour,
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const wxColour& destColour,
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wxDirection nDirection) wxOVERRIDE;
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virtual void DoGradientFillConcentric(const wxRect& rect,
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const wxColour& initialColour,
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const wxColour& destColour,
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const wxPoint& circleCenter) wxOVERRIDE;
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virtual void DoGetSize(int* width, int* height) const wxOVERRIDE
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{
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if ( width )
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*width = m_width;
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if ( height )
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*height = m_height;
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}
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virtual void DoGetTextExtent(const wxString& string,
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wxCoord* x, wxCoord* y,
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wxCoord* descent = NULL,
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wxCoord* externalLeading = NULL,
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const wxFont* theFont = NULL) const wxOVERRIDE;
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virtual void DoSetDeviceClippingRegion(const wxRegion& region) wxOVERRIDE
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{
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DoSetClippingRegion(region.GetBox().x, region.GetBox().y,
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region.GetBox().width, region.GetBox().height);
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}
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virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
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wxCoord w, wxCoord h) wxOVERRIDE;
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virtual void DoGetSizeMM(int* width, int* height) const wxOVERRIDE;
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virtual wxSize GetPPI() const wxOVERRIDE;
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void Init(const wxString& filename, int width, int height,
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double dpi, const wxString& title);
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void write(const wxString& s);
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private:
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// If m_graphics_changed is true, close the current <g> element and start a
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// new one for the last pen/brush change.
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void NewGraphicsIfNeeded();
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// Open a new graphics group setting up all the attributes according to
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// their current values in wxDC.
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void DoStartNewGraphics();
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wxString m_filename;
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bool m_OK;
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bool m_graphics_changed; // set by Set{Brush,Pen}()
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int m_width, m_height;
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double m_dpi;
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wxScopedPtr<wxFileOutputStream> m_outfile;
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wxScopedPtr<wxSVGBitmapHandler> m_bmp_handler; // class to handle bitmaps
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wxSVGShapeRenderingMode m_renderingMode;
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// The clipping nesting level is incremented by every call to
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// SetClippingRegion() and reset when DestroyClippingRegion() is called.
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size_t m_clipNestingLevel;
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// Unique ID for every clipping graphics group: this is simply always
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// incremented in each SetClippingRegion() call.
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size_t m_clipUniqueId;
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// Unique ID for every gradient.
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size_t m_gradientUniqueId;
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wxDECLARE_ABSTRACT_CLASS(wxSVGFileDCImpl);
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wxDECLARE_NO_COPY_CLASS(wxSVGFileDCImpl);
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};
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class WXDLLIMPEXP_CORE wxSVGFileDC : public wxDC
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{
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public:
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wxSVGFileDC(const wxString& filename,
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int width = 320,
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int height = 240,
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double dpi = 72.0,
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const wxString& title = wxString())
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: wxDC(new wxSVGFileDCImpl(this, filename, width, height, dpi, title))
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{
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}
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// wxSVGFileDC-specific methods:
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// Use a custom bitmap handler: takes ownership of the handler.
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void SetBitmapHandler(wxSVGBitmapHandler* handler);
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void SetShapeRenderingMode(wxSVGShapeRenderingMode renderingMode);
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private:
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wxDECLARE_ABSTRACT_CLASS(wxSVGFileDC);
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};
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#endif // wxUSE_SVG
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#endif // _WX_DCSVG_H_
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