a2a846e473
Provide a built-in alternative for using external files for the bitmaps in SVG: allow embedding them inside the SVG itself using "data:" URI. And also allow to define custom handlers to make the behaviour even more flexible. Closes #15968. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75981 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
818 lines
24 KiB
C++
818 lines
24 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/common/svg.cpp
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// Purpose: SVG sample
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// Author: Chris Elliott
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// Modified by:
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// For compilers that support precompilation, includes "wx/wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if wxUSE_SVG
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#ifndef WX_PRECOMP
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#include "wx/dcmemory.h"
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#include "wx/dcscreen.h"
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#include "wx/icon.h"
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#include "wx/image.h"
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#endif
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#include "wx/base64.h"
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#include "wx/dcsvg.h"
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#include "wx/wfstream.h"
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#include "wx/filename.h"
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#include "wx/mstream.h"
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#include "wx/private/markupparser.h"
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// ----------------------------------------------------------
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// Global utilities
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// ----------------------------------------------------------
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namespace
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{
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inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; }
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// This function returns a string representation of a floating point number in
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// C locale (i.e. always using "." for the decimal separator) and with the
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// fixed precision (which is 2 for some unknown reason but this is what it was
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// in this code originally).
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inline wxString NumStr(double f)
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{
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return wxString::FromCDouble(f, 2);
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}
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// Return the colour representation as HTML-like "#rrggbb" string and also
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// returns its alpha as opacity number in 0..1 range.
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wxString Col2SVG(wxColour c, float *opacity)
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{
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if ( c.Alpha() != wxALPHA_OPAQUE )
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{
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*opacity = c.Alpha()/255.;
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// Remove the alpha before using GetAsString(wxC2S_HTML_SYNTAX) as it
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// doesn't support colours with alpha channel.
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c = wxColour(c.GetRGB());
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}
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else // No alpha.
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{
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*opacity = 1.;
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}
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return c.GetAsString(wxC2S_HTML_SYNTAX);
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}
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wxString wxPenString(wxColour c, int style = wxPENSTYLE_SOLID)
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{
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float opacity;
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wxString s = wxT("stroke:") + Col2SVG(c, &opacity) + wxT("; ");
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switch ( style )
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{
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case wxPENSTYLE_SOLID:
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s += wxString::Format(wxT("stroke-opacity:%s; "), NumStr(opacity));
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break;
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case wxPENSTYLE_TRANSPARENT:
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s += wxT("stroke-opacity:0.0; ");
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break;
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default :
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wxASSERT_MSG(false, wxT("wxSVGFileDC::Requested Pen Style not available"));
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}
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return s;
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}
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wxString wxBrushString(wxColour c, int style = wxBRUSHSTYLE_SOLID)
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{
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float opacity;
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wxString s = wxT("fill:") + Col2SVG(c, &opacity) + wxT("; ");
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switch ( style )
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{
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case wxBRUSHSTYLE_SOLID:
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s += wxString::Format(wxT("fill-opacity:%s; "), NumStr(opacity));
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break;
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case wxBRUSHSTYLE_TRANSPARENT:
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s += wxT("fill-opacity:0.0; ");
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break;
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default :
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wxASSERT_MSG(false, wxT("wxSVGFileDC::Requested Brush Style not available"));
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}
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return s;
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}
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} // anonymous namespace
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// ----------------------------------------------------------------------------
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// wxSVGBitmapEmbedHandler
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// ----------------------------------------------------------------------------
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bool
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wxSVGBitmapEmbedHandler::ProcessBitmap(const wxBitmap& bmp,
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wxCoord x, wxCoord y,
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wxOutputStream& stream) const
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{
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static int sub_images = 0;
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if ( wxImage::FindHandler(wxBITMAP_TYPE_PNG) == NULL )
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wxImage::AddHandler(new wxPNGHandler);
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// write the bitmap as a PNG to a memory stream and Base64 encode
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wxMemoryOutputStream mem;
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bmp.ConvertToImage().SaveFile(mem, wxBITMAP_TYPE_PNG);
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wxString data = wxBase64Encode(mem.GetOutputStreamBuffer()->GetBufferStart(),
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mem.GetSize());
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// write image meta information
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wxString s;
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s += wxString::Format(" <image x=\"%d\" y=\"%d\" "
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"width=\"%dpx\" height=\"%dpx\" "
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"title=\"Image from wxSVG\"\n",
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x, y, bmp.GetWidth(), bmp.GetHeight());
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s += wxString::Format(" id=\"image%d\" "
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"xlink:href=\"data:image/png;base64,\n",
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sub_images++);
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// Wrap Base64 encoded data on 76 columns boundary (same as Inkscape).
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const unsigned WRAP = 76;
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for ( size_t i = 0; i < data.size(); i += WRAP )
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{
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if (i < data.size() - WRAP)
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s += data.Mid(i, WRAP) + "\n";
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else
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s += data.Mid(i, s.size() - i) + "\"\n/>"; // last line
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}
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// write to the SVG file
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const wxCharBuffer buf = s.utf8_str();
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stream.Write(buf, strlen((const char *)buf));
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return stream.IsOk();
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}
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// ----------------------------------------------------------
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// wxSVGBitmapFileHandler
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// ----------------------------------------------------------
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bool
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wxSVGBitmapFileHandler::ProcessBitmap(const wxBitmap& bmp,
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wxCoord x, wxCoord y,
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wxOutputStream& stream) const
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{
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static int sub_images = 0;
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if ( wxImage::FindHandler(wxBITMAP_TYPE_PNG) == NULL )
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wxImage::AddHandler(new wxPNGHandler);
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// find a suitable file name
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wxString sPNG;
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do
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{
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sPNG = wxString::Format("image%d.png", sub_images++);
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}
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while (wxFile::Exists(sPNG));
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if ( !bmp.SaveFile(sPNG, wxBITMAP_TYPE_PNG) )
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return false;
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// reference the bitmap from the SVG doc using only filename & ext
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sPNG = sPNG.AfterLast(wxFileName::GetPathSeparator());
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// reference the bitmap from the SVG doc
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wxString s;
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s += wxString::Format(" <image x=\"%d\" y=\"%d\" "
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"width=\"%dpx\" height=\"%dpx\" "
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"title=\"Image from wxSVG\"\n",
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x, y, bmp.GetWidth(), bmp.GetHeight());
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s += wxString::Format(" xlink:href=\"%s\">\n</image>\n", sPNG);
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// write to the SVG file
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const wxCharBuffer buf = s.utf8_str();
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stream.Write(buf, strlen((const char *)buf));
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return stream.IsOk();
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}
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// ----------------------------------------------------------
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// wxSVGFileDC (specialisations)
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// ----------------------------------------------------------
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void wxSVGFileDC::SetBitmapHandler(wxSVGBitmapHandler* handler)
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{
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((wxSVGFileDCImpl*)GetImpl())->SetBitmapHandler(handler);
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}
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// ----------------------------------------------------------
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// wxSVGFileDCImpl
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// ----------------------------------------------------------
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IMPLEMENT_ABSTRACT_CLASS(wxSVGFileDCImpl, wxDC)
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wxSVGFileDCImpl::wxSVGFileDCImpl( wxSVGFileDC *owner, const wxString &filename,
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int width, int height, double dpi ) :
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wxDCImpl( owner )
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{
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Init( filename, width, height, dpi );
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}
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void wxSVGFileDCImpl::Init (const wxString &filename, int Width, int Height, double dpi)
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{
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m_width = Width;
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m_height = Height;
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m_dpi = dpi;
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m_OK = true;
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m_clipUniqueId = 0;
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m_clipNestingLevel = 0;
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m_mm_to_pix_x = dpi/25.4;
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m_mm_to_pix_y = dpi/25.4;
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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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m_pen = *wxBLACK_PEN;
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m_font = *wxNORMAL_FONT;
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m_brush = *wxWHITE_BRUSH;
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m_graphics_changed = true;
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////////////////////code here
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m_bmp_handler = NULL;
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m_outfile = new wxFileOutputStream(filename);
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m_OK = m_outfile->IsOk();
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if (m_OK)
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{
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m_filename = filename;
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m_sub_images = 0;
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wxString s;
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s = wxT("<?xml version=\"1.0\" standalone=\"no\"?>\n");
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write(s);
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s = wxT("<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 20010904//EN\"\n");
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write(s);
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s = wxT("\"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd\">\n");
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write(s);
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s = wxT("<svg xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"\n");
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write(s);
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s.Printf( wxT(" width=\"%scm\" height=\"%scm\" viewBox=\"0 0 %d %d \">\n"), NumStr(float(Width)/dpi*2.54), NumStr(float(Height)/dpi*2.54), Width, Height );
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write(s);
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s = wxT("<title>SVG Picture created as ") + wxFileName(filename).GetFullName() + wxT(" </title>\n");
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write(s);
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s = wxString (wxT("<desc>Picture generated by wxSVG ")) + wxSVGVersion + wxT(" </desc>\n");
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write(s);
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s = wxT("<g style=\"fill:black; stroke:black; stroke-width:1\">\n");
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write(s);
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}
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}
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wxSVGFileDCImpl::~wxSVGFileDCImpl()
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{
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wxString s = wxT("</g> \n</svg> \n");
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write(s);
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delete m_outfile;
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}
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void wxSVGFileDCImpl::DoGetSizeMM( int *width, int *height ) const
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{
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if (width)
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*width = wxRound( (double)m_width / m_mm_to_pix_x );
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if (height)
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*height = wxRound( (double)m_height / m_mm_to_pix_y );
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}
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wxSize wxSVGFileDCImpl::GetPPI() const
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{
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return wxSize( wxRound(m_dpi), wxRound(m_dpi) );
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}
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void wxSVGFileDCImpl::DoDrawLine (wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
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{
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NewGraphicsIfNeeded();
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wxString s;
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s.Printf ( wxT("<path d=\"M%d %d L%d %d\" /> \n"), x1,y1,x2,y2 );
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if (m_OK)
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{
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write(s);
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}
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CalcBoundingBox(x1, y1);
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CalcBoundingBox(x2, y2);
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}
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void wxSVGFileDCImpl::DoDrawLines(int n, const wxPoint points[], wxCoord xoffset , wxCoord yoffset )
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{
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for ( int i = 1; i < n; i++ )
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{
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DoDrawLine ( points [i-1].x + xoffset, points [i-1].y + yoffset,
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points [ i ].x + xoffset, points [ i ].y + yoffset );
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}
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}
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void wxSVGFileDCImpl::DoDrawPoint (wxCoord x1, wxCoord y1)
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{
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wxString s;
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NewGraphicsIfNeeded();
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s = wxT("<g style = \"stroke-linecap:round;\" > \n");
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write(s);
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DoDrawLine ( x1,y1,x1,y1 );
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s = wxT("</g>");
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write(s);
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}
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void wxSVGFileDCImpl::DoDrawCheckMark(wxCoord x1, wxCoord y1, wxCoord width, wxCoord height)
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{
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wxDCImpl::DoDrawCheckMark (x1,y1,width,height);
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}
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void wxSVGFileDCImpl::DoDrawText(const wxString& text, wxCoord x1, wxCoord y1)
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{
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DoDrawRotatedText(text, x1,y1,0.0);
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}
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void wxSVGFileDCImpl::DoDrawRotatedText(const wxString& sText, wxCoord x, wxCoord y, double angle)
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{
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//known bug; if the font is drawn in a scaled DC, it will not behave exactly as wxMSW
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NewGraphicsIfNeeded();
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wxString s, sTmp;
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// calculate bounding box
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wxCoord w, h, desc;
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DoGetTextExtent(sText, &w, &h, &desc);
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double rad = DegToRad(angle);
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// wxT("upper left") and wxT("upper right")
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CalcBoundingBox(x, y);
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CalcBoundingBox((wxCoord)(x + w*cos(rad)), (wxCoord)(y - h*sin(rad)));
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// wxT("bottom left") and wxT("bottom right")
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CalcBoundingBox((wxCoord)(x + h*sin(rad)), (wxCoord)(y + h*cos(rad)));
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CalcBoundingBox((wxCoord)(x + h*sin(rad) + w*cos(rad)), (wxCoord)(y + h*cos(rad) - w*sin(rad)));
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if (m_backgroundMode == wxBRUSHSTYLE_SOLID)
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{
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// draw background first
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// just like DoDrawRectangle except we pass the text color to it and set the border to a 1 pixel wide text background
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sTmp.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" "), x, y, w, h );
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s = sTmp + wxT("style=\"") + wxBrushString(m_textBackgroundColour);
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s += wxT("stroke-width:1; ") + wxPenString(m_textBackgroundColour);
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sTmp.Printf ( wxT("\" transform=\"rotate( %s %d %d ) \" />"), NumStr(-angle), x,y );
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s += sTmp + wxT("\n");
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write(s);
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}
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// convert x,y to SVG text x,y (the coordinates of the text baseline)
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x = (wxCoord)(x + (h-desc)*sin(rad));
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y = (wxCoord)(y + (h-desc)*cos(rad));
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//now do the text itself
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s.Printf (wxT(" <text x=\"%d\" y=\"%d\" "),x,y );
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sTmp = m_font.GetFaceName();
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if (sTmp.Len() > 0) s += wxT("style=\"font-family:") + sTmp + wxT("; ");
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else s += wxT("style=\" ");
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wxString fontweights [3] = { wxT("normal"), wxT("lighter"), wxT("bold") };
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s += wxT("font-weight:") + fontweights[m_font.GetWeight() - wxNORMAL] + wxT("; ");
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wxString fontstyles [5] = { wxT("normal"), wxT("style error"), wxT("style error"), wxT("italic"), wxT("oblique") };
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s += wxT("font-style:") + fontstyles[m_font.GetStyle() - wxNORMAL] + wxT("; ");
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sTmp.Printf (wxT("font-size:%dpt; "), m_font.GetPointSize() );
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s += sTmp;
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//text will be solid, unless alpha value isn't opaque in the foreground colour
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s += wxBrushString(m_textForegroundColour) + wxPenString(m_textForegroundColour);
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sTmp.Printf ( wxT("stroke-width:0;\" transform=\"rotate( %s %d %d ) \" >"), NumStr(-angle), x,y );
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s += sTmp + wxMarkupParser::Quote(sText) + wxT("</text> ") + wxT("\n");
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if (m_OK)
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{
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write(s);
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}
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}
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void wxSVGFileDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height)
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{
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DoDrawRoundedRectangle(x, y, width, height, 0);
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}
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void wxSVGFileDCImpl::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius )
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{
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NewGraphicsIfNeeded();
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wxString s;
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s.Printf ( wxT(" <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" rx=\"%s\" "),
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x, y, width, height, NumStr(radius) );
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s += wxT(" /> \n");
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write(s);
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CalcBoundingBox(x, y);
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CalcBoundingBox(x + width, y + height);
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}
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void wxSVGFileDCImpl::DoDrawPolygon(int n, const wxPoint points[],
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wxCoord xoffset, wxCoord yoffset,
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wxPolygonFillMode fillStyle)
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{
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NewGraphicsIfNeeded();
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wxString s, sTmp;
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s = wxT("<polygon style=\"");
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if ( fillStyle == wxODDEVEN_RULE )
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s += wxT("fill-rule:evenodd; ");
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else
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s += wxT("fill-rule:nonzero; ");
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s += wxT("\" \npoints=\"");
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for (int i = 0; i < n; i++)
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{
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sTmp.Printf ( wxT("%d,%d"), points [i].x+xoffset, points[i].y+yoffset );
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s += sTmp + wxT("\n");
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CalcBoundingBox ( points [i].x+xoffset, points[i].y+yoffset);
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}
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s += wxT("\" /> \n");
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write(s);
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}
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void wxSVGFileDCImpl::DoDrawEllipse (wxCoord x, wxCoord y, wxCoord width, wxCoord height)
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{
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NewGraphicsIfNeeded();
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int rh = height /2;
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int rw = width /2;
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wxString s;
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s.Printf ( wxT("<ellipse cx=\"%d\" cy=\"%d\" rx=\"%d\" ry=\"%d\" "), x+rw,y+rh, rw, rh );
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s += wxT(" /> \n");
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write(s);
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CalcBoundingBox(x, y);
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CalcBoundingBox(x + width, y + height);
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}
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void wxSVGFileDCImpl::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord xc, wxCoord yc)
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{
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/* Draws an arc of a circle, centred on (xc, yc), with starting point
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(x1, y1) and ending at (x2, y2). The current pen is used for the outline
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and the current brush for filling the shape.
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The arc is drawn in an anticlockwise direction from the start point to
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the end point.
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Might be better described as Pie drawing */
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NewGraphicsIfNeeded();
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wxString s;
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// we need the radius of the circle which has two estimates
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double r1 = sqrt ( double( (x1-xc)*(x1-xc) ) + double( (y1-yc)*(y1-yc) ) );
|
|
double r2 = sqrt ( double( (x2-xc)*(x2-xc) ) + double( (y2-yc)*(y2-yc) ) );
|
|
|
|
wxASSERT_MSG( (fabs ( r2-r1 ) <= 3), wxT("wxSVGFileDC::DoDrawArc Error in getting radii of circle"));
|
|
if ( fabs ( r2-r1 ) > 3 ) //pixels
|
|
{
|
|
s = wxT("<!--- wxSVGFileDC::DoDrawArc Error in getting radii of circle --> \n");
|
|
write(s);
|
|
}
|
|
|
|
double theta1 = atan2((double)(yc-y1),(double)(x1-xc));
|
|
if ( theta1 < 0 ) theta1 = theta1 + M_PI * 2;
|
|
double theta2 = atan2((double)(yc-y2), (double)(x2-xc));
|
|
if ( theta2 < 0 ) theta2 = theta2 + M_PI * 2;
|
|
if ( theta2 < theta1 ) theta2 = theta2 + M_PI *2;
|
|
|
|
int fArc; // flag for large or small arc 0 means less than 180 degrees
|
|
if ( fabs(theta2 - theta1) > M_PI ) fArc = 1; else fArc = 0;
|
|
|
|
int fSweep = 0; // flag for sweep always 0
|
|
|
|
s.Printf ( wxT("<path d=\"M%d %d A%s %s 0.0 %d %d %d %d L%d %d z "),
|
|
x1,y1, NumStr(r1), NumStr(r2), fArc, fSweep, x2, y2, xc, yc );
|
|
|
|
// the z means close the path and fill
|
|
s += wxT(" \" /> \n");
|
|
|
|
|
|
if (m_OK)
|
|
{
|
|
write(s);
|
|
}
|
|
}
|
|
|
|
void wxSVGFileDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea)
|
|
{
|
|
/*
|
|
Draws an arc of an ellipse. The current pen is used for drawing the arc
|
|
and the current brush is used for drawing the pie. This function is
|
|
currently only available for X window and PostScript device contexts.
|
|
|
|
x and y specify the x and y coordinates of the upper-left corner of the
|
|
rectangle that contains the ellipse.
|
|
|
|
width and height specify the width and height of the rectangle that
|
|
contains the ellipse.
|
|
|
|
start and end specify the start and end of the arc relative to the
|
|
three-o'clock position from the center of the rectangle. Angles are
|
|
specified in degrees (360 is a complete circle). Positive values mean
|
|
counter-clockwise motion. If start is equal to end, a complete ellipse
|
|
will be drawn. */
|
|
|
|
//known bug: SVG draws with the current pen along the radii, but this does not happen in wxMSW
|
|
|
|
NewGraphicsIfNeeded();
|
|
|
|
wxString s;
|
|
//radius
|
|
double rx = w / 2;
|
|
double ry = h / 2;
|
|
// center
|
|
double xc = x + rx;
|
|
double yc = y + ry;
|
|
|
|
double xs, ys, xe, ye;
|
|
xs = xc + rx * cos (DegToRad(sa));
|
|
xe = xc + rx * cos (DegToRad(ea));
|
|
ys = yc - ry * sin (DegToRad(sa));
|
|
ye = yc - ry * sin (DegToRad(ea));
|
|
|
|
///now same as circle arc...
|
|
|
|
double theta1 = atan2(ys-yc, xs-xc);
|
|
double theta2 = atan2(ye-yc, xe-xc);
|
|
|
|
int fArc; // flag for large or small arc 0 means less than 180 degrees
|
|
if ( (theta2 - theta1) > 0 ) fArc = 1; else fArc = 0;
|
|
|
|
int fSweep;
|
|
if ( fabs(theta2 - theta1) > M_PI) fSweep = 1; else fSweep = 0;
|
|
|
|
s.Printf ( wxT("<path d=\"M%d %d A%d %d 0.0 %d %d %d %d L %d %d z "),
|
|
int(xs), int(ys), int(rx), int(ry),
|
|
fArc, fSweep, int(xe), int(ye), int(xc), int(yc) );
|
|
|
|
s += wxT(" \" /> \n");
|
|
|
|
if (m_OK)
|
|
{
|
|
write(s);
|
|
}
|
|
}
|
|
|
|
void wxSVGFileDCImpl::DoSetClippingRegion( int x, int y, int width, int height )
|
|
{
|
|
wxString svg;
|
|
|
|
// End current graphics group to ensure proper xml nesting (e.g. so that
|
|
// graphics can be subsequently changed inside the clipping region)
|
|
svg << "</g>\n"
|
|
"<defs>\n"
|
|
"<clipPath id=\"clip" << m_clipNestingLevel << "\">\n"
|
|
"<rect id=\"cliprect" << m_clipNestingLevel << "\" "
|
|
"x=\"" << x << "\" "
|
|
"y=\"" << y << "\" "
|
|
"width=\"" << width << "\" "
|
|
"height=\"" << height << "\" "
|
|
"style=\"stroke: gray; fill: none;\"/>\n"
|
|
"</clipPath>\n"
|
|
"</defs>\n"
|
|
"<g style=\"clip-path: url(#clip" << m_clipNestingLevel << ");\">\n";
|
|
|
|
write(svg);
|
|
|
|
// Re-apply current graphics to ensure proper xml nesting
|
|
DoStartNewGraphics();
|
|
|
|
m_clipUniqueId++;
|
|
m_clipNestingLevel++;
|
|
}
|
|
|
|
void wxSVGFileDCImpl::DestroyClippingRegion()
|
|
{
|
|
wxString svg;
|
|
|
|
// End current graphics element to ensure proper xml nesting (e.g. graphics
|
|
// might have been changed inside the clipping region)
|
|
svg << "</g>\n";
|
|
|
|
// Close clipping group elements
|
|
for ( size_t i = 0; i < m_clipUniqueId; i++ )
|
|
{
|
|
svg << "</g>";
|
|
}
|
|
svg << "\n";
|
|
|
|
write(svg);
|
|
|
|
// Re-apply current graphics (e.g. brush may have been changed inside one
|
|
// of the clipped regions - that change will have been lost after xml
|
|
// elements for the clipped region have been closed).
|
|
DoStartNewGraphics();
|
|
|
|
m_clipUniqueId = 0;
|
|
}
|
|
|
|
void wxSVGFileDCImpl::DoGetTextExtent(const wxString& string, wxCoord *w, wxCoord *h, wxCoord *descent , wxCoord *externalLeading , const wxFont *font) const
|
|
|
|
{
|
|
wxScreenDC sDC;
|
|
|
|
sDC.SetFont (m_font);
|
|
if ( font != NULL ) sDC.SetFont ( *font );
|
|
sDC.GetTextExtent(string, w, h, descent, externalLeading );
|
|
}
|
|
|
|
wxCoord wxSVGFileDCImpl::GetCharHeight() const
|
|
{
|
|
wxScreenDC sDC;
|
|
sDC.SetFont (m_font);
|
|
|
|
return sDC.GetCharHeight();
|
|
|
|
}
|
|
|
|
wxCoord wxSVGFileDCImpl::GetCharWidth() const
|
|
{
|
|
wxScreenDC sDC;
|
|
sDC.SetFont (m_font);
|
|
|
|
return sDC.GetCharWidth();
|
|
}
|
|
|
|
|
|
// ----------------------------------------------------------
|
|
// wxSVGFileDCImpl - set functions
|
|
// ----------------------------------------------------------
|
|
|
|
void wxSVGFileDCImpl::SetBackground( const wxBrush &brush )
|
|
{
|
|
m_backgroundBrush = brush;
|
|
}
|
|
|
|
|
|
void wxSVGFileDCImpl::SetBackgroundMode( int mode )
|
|
{
|
|
m_backgroundMode = mode;
|
|
}
|
|
|
|
void wxSVGFileDCImpl::SetBitmapHandler(wxSVGBitmapHandler* handler)
|
|
{
|
|
delete m_bmp_handler;
|
|
m_bmp_handler = handler;
|
|
}
|
|
|
|
void wxSVGFileDCImpl::SetBrush(const wxBrush& brush)
|
|
{
|
|
m_brush = brush;
|
|
|
|
m_graphics_changed = true;
|
|
}
|
|
|
|
|
|
void wxSVGFileDCImpl::SetPen(const wxPen& pen)
|
|
{
|
|
// width, color, ends, joins : currently implemented
|
|
// dashes, stipple : not implemented
|
|
m_pen = pen;
|
|
|
|
m_graphics_changed = true;
|
|
}
|
|
|
|
void wxSVGFileDCImpl::NewGraphicsIfNeeded()
|
|
{
|
|
if ( !m_graphics_changed )
|
|
return;
|
|
|
|
m_graphics_changed = false;
|
|
|
|
write(wxS("</g>\n"));
|
|
|
|
DoStartNewGraphics();
|
|
}
|
|
|
|
void wxSVGFileDCImpl::DoStartNewGraphics()
|
|
{
|
|
wxString s, sBrush, sPenCap, sPenJoin, sPenStyle, sLast;
|
|
|
|
sBrush = wxS("<g style=\"") + wxBrushString ( m_brush.GetColour(), m_brush.GetStyle() )
|
|
+ wxPenString(m_pen.GetColour(), m_pen.GetStyle());
|
|
|
|
switch ( m_pen.GetCap() )
|
|
{
|
|
case wxCAP_PROJECTING :
|
|
sPenCap = wxT("stroke-linecap:square; ");
|
|
break;
|
|
case wxCAP_BUTT :
|
|
sPenCap = wxT("stroke-linecap:butt; ");
|
|
break;
|
|
case wxCAP_ROUND :
|
|
default :
|
|
sPenCap = wxT("stroke-linecap:round; ");
|
|
}
|
|
|
|
switch ( m_pen.GetJoin() )
|
|
{
|
|
case wxJOIN_BEVEL :
|
|
sPenJoin = wxT("stroke-linejoin:bevel; ");
|
|
break;
|
|
case wxJOIN_MITER :
|
|
sPenJoin = wxT("stroke-linejoin:miter; ");
|
|
break;
|
|
case wxJOIN_ROUND :
|
|
default :
|
|
sPenJoin = wxT("stroke-linejoin:round; ");
|
|
}
|
|
|
|
sLast.Printf( wxT("stroke-width:%d\" \n transform=\"translate(%s %s) scale(%s %s)\">"),
|
|
m_pen.GetWidth(), NumStr(m_logicalOriginX), NumStr(m_logicalOriginY), NumStr(m_scaleX), NumStr(m_scaleY) );
|
|
|
|
s = sBrush + sPenCap + sPenJoin + sPenStyle + sLast + wxT("\n");
|
|
write(s);
|
|
}
|
|
|
|
|
|
void wxSVGFileDCImpl::SetFont(const wxFont& font)
|
|
|
|
{
|
|
m_font = font;
|
|
}
|
|
|
|
// export a bitmap as a raster image in png
|
|
bool wxSVGFileDCImpl::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
|
|
wxDC* source, wxCoord xsrc, wxCoord ysrc,
|
|
wxRasterOperationMode logicalFunc /*= wxCOPY*/, bool useMask /*= false*/,
|
|
wxCoord /*xsrcMask = -1*/, wxCoord /*ysrcMask = -1*/)
|
|
{
|
|
if (logicalFunc != wxCOPY)
|
|
{
|
|
wxASSERT_MSG(false, wxT("wxSVGFileDC::DoBlit Call requested nonCopy mode; this is not possible"));
|
|
return false;
|
|
}
|
|
if (useMask != false)
|
|
{
|
|
wxASSERT_MSG(false, wxT("wxSVGFileDC::DoBlit Call requested false mask; this is not possible"));
|
|
return false;
|
|
}
|
|
wxBitmap myBitmap (width, height);
|
|
wxMemoryDC memDC;
|
|
memDC.SelectObject( myBitmap );
|
|
memDC.Blit(0, 0, width, height, source, xsrc, ysrc);
|
|
memDC.SelectObject( wxNullBitmap );
|
|
DoDrawBitmap(myBitmap, xdest, ydest);
|
|
return false;
|
|
}
|
|
|
|
void wxSVGFileDCImpl::DoDrawIcon(const class wxIcon & myIcon, wxCoord x, wxCoord y)
|
|
{
|
|
wxBitmap myBitmap (myIcon.GetWidth(), myIcon.GetHeight() );
|
|
wxMemoryDC memDC;
|
|
memDC.SelectObject( myBitmap );
|
|
memDC.DrawIcon(myIcon,0,0);
|
|
memDC.SelectObject( wxNullBitmap );
|
|
DoDrawBitmap(myBitmap, x, y);
|
|
}
|
|
|
|
void wxSVGFileDCImpl::DoDrawBitmap(const class wxBitmap & bmp, wxCoord x, wxCoord y , bool WXUNUSED(bTransparent) /*=0*/ )
|
|
{
|
|
NewGraphicsIfNeeded();
|
|
|
|
// If we don't have any bitmap handler yet, use the default one.
|
|
if ( !m_bmp_handler )
|
|
m_bmp_handler = new wxSVGBitmapFileHandler();
|
|
|
|
m_bmp_handler->ProcessBitmap(bmp, x, y, *m_outfile);
|
|
}
|
|
|
|
void wxSVGFileDCImpl::write(const wxString &s)
|
|
{
|
|
const wxCharBuffer buf = s.utf8_str();
|
|
m_outfile->Write(buf, strlen((const char *)buf));
|
|
m_OK = m_outfile->IsOk();
|
|
}
|
|
|
|
|
|
#ifdef __BORLANDC__
|
|
#pragma warn .rch
|
|
#pragma warn .ccc
|
|
#endif
|
|
|
|
#endif // wxUSE_SVG
|
|
|