X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/526954c5968baa29218c994ec48e476ae2bd4b9f..64ea838d8f4d1853b7d850db93ee565e901d099a:/src/common/dcsvg.cpp diff --git a/src/common/dcsvg.cpp b/src/common/dcsvg.cpp index 3abd5a6389..85105f91f2 100644 --- a/src/common/dcsvg.cpp +++ b/src/common/dcsvg.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: svg.cpp +// Name: src/common/svg.cpp // Purpose: SVG sample // Author: Chris Elliott // Modified by: @@ -28,54 +28,86 @@ #include "wx/wfstream.h" #include "wx/filename.h" -#define wxSVG_DEBUG false -// or true to see the calls being executed - -#define newline wxString(wxT("\n")) -#define space wxString(wxT(" ")) -#define semicolon wxString(wxT(";")) -#define wx_round(a) (int)((a)+.5) - - // ---------------------------------------------------------- // Global utilities // ---------------------------------------------------------- -static inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; } +namespace +{ + +inline double DegToRad(double deg) { return (deg * M_PI) / 180.0; } -wxString wxColStr ( wxColour c ) +// This function returns a string representation of a floating point number in +// C locale (i.e. always using "." for the decimal separator) and with the +// fixed precision (which is 2 for some unknown reason but this is what it was +// in this code originally). +inline wxString NumStr(double f) { - unsigned char r, g, b; - r = c.Red (); - g = c.Green (); - b = c. Blue (); + return wxString::FromCDouble(f, 2); +} - // possible Unicode bug here - wxString s = wxDecToHex(r) + wxDecToHex(g) + wxDecToHex(b); - return s; +// Return the colour representation as HTML-like "#rrggbb" string and also +// returns its alpha as opacity number in 0..1 range. +wxString Col2SVG(wxColour c, float *opacity) +{ + if ( c.Alpha() != wxALPHA_OPAQUE ) + { + *opacity = c.Alpha()/255.; + + // Remove the alpha before using GetAsString(wxC2S_HTML_SYNTAX) as it + // doesn't support colours with alpha channel. + c = wxColour(c.GetRGB()); + } + else // No alpha. + { + *opacity = 1.; + } + + return c.GetAsString(wxC2S_HTML_SYNTAX); } +wxString wxPenString(wxColour c, int style = wxPENSTYLE_SOLID) +{ + float opacity; + wxString s = wxT("stroke:") + Col2SVG(c, &opacity) + wxT("; "); -wxString wxBrushString ( wxColour c, int style ) + switch ( style ) + { + case wxPENSTYLE_SOLID: + s += wxString::Format(wxT("stroke-opacity:%s; "), NumStr(opacity)); + break; + case wxPENSTYLE_TRANSPARENT: + s += wxT("stroke-opacity:0.0; "); + break; + default : + wxASSERT_MSG(false, wxT("wxSVGFileDC::Requested Pen Style not available")); + } + + return s; +} + +wxString wxBrushString(wxColour c, int style = wxBRUSHSTYLE_SOLID) { - wxString s = wxT("fill:#") + wxColStr (c) + semicolon + space; + float opacity; + wxString s = wxT("fill:") + Col2SVG(c, &opacity) + wxT("; "); + switch ( style ) { - case wxBRUSHSTYLE_SOLID : - s = s + wxT("fill-opacity:1.0; "); + case wxBRUSHSTYLE_SOLID: + s += wxString::Format(wxT("fill-opacity:%s; "), NumStr(opacity)); break; case wxBRUSHSTYLE_TRANSPARENT: - s = s + wxT("fill-opacity:0.0; "); + s += wxT("fill-opacity:0.0; "); break; - default : wxASSERT_MSG(false, wxT("wxSVGFileDC::Requested Brush Style not available")); - } - s = s + newline; + return s; } +} // anonymous namespace + // ---------------------------------------------------------- // wxSVGFileDCImpl // ---------------------------------------------------------- @@ -98,6 +130,9 @@ void wxSVGFileDCImpl::Init (const wxString &filename, int Width, int Height, dou m_OK = true; + m_clipUniqueId = 0; + m_clipNestingLevel = 0; + m_mm_to_pix_x = dpi/25.4; m_mm_to_pix_y = dpi/25.4; @@ -115,27 +150,27 @@ void wxSVGFileDCImpl::Init (const wxString &filename, int Width, int Height, dou ////////////////////code here m_outfile = new wxFileOutputStream(filename); - m_OK = m_outfile->Ok (); + m_OK = m_outfile->IsOk(); if (m_OK) { m_filename = filename; m_sub_images = 0; wxString s; - s = wxT(""); s = s + newline; + s = wxT("\n"); write(s); - s = wxT(" ") + newline; + s = wxT("\"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd\">\n"); write(s); - s = wxT(" \n"), float(Width)/dpi*2.54, float(Height)/dpi*2.54, Width, Height ); + 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 ); write(s); - s = wxT("SVG Picture created as ") + wxFileName(filename).GetFullName() + wxT(" ") + newline; + s = wxT("SVG Picture created as ") + wxFileName(filename).GetFullName() + wxT(" \n"); write(s); - s = wxString (wxT("Picture generated by wxSVG ")) + wxSVGVersion + wxT(" ")+ newline; + s = wxString (wxT("Picture generated by wxSVG ")) + wxSVGVersion + wxT(" \n"); write(s); - s = wxT("") + newline; + s = wxT("\n"); write(s); } } @@ -163,17 +198,15 @@ wxSize wxSVGFileDCImpl::GetPPI() const void wxSVGFileDCImpl::DoDrawLine (wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) { - if (m_graphics_changed) NewGraphics (); + NewGraphicsIfNeeded(); wxString s; s.Printf ( wxT(" \n"), x1,y1,x2,y2 ); if (m_OK) { write(s); } - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawLine Call executed")); CalcBoundingBox(x1, y1); CalcBoundingBox(x2, y2); - return; } void wxSVGFileDCImpl::DoDrawLines(int n, wxPoint points[], wxCoord xoffset , wxCoord yoffset ) @@ -188,8 +221,8 @@ void wxSVGFileDCImpl::DoDrawLines(int n, wxPoint points[], wxCoord xoffset , wxC void wxSVGFileDCImpl::DoDrawPoint (wxCoord x1, wxCoord y1) { wxString s; - if (m_graphics_changed) NewGraphics (); - s = wxT(" ") + newline; + NewGraphicsIfNeeded(); + s = wxT(" \n"); write(s); DoDrawLine ( x1,y1,x1,y1 ); s = wxT(""); @@ -204,13 +237,12 @@ void wxSVGFileDCImpl::DoDrawCheckMark(wxCoord x1, wxCoord y1, wxCoord width, wxC void wxSVGFileDCImpl::DoDrawText(const wxString& text, wxCoord x1, wxCoord y1) { DoDrawRotatedText(text, x1,y1,0.0); - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawText Call executed")); } void wxSVGFileDCImpl::DoDrawRotatedText(const wxString& sText, wxCoord x, wxCoord y, double angle) { //known bug; if the font is drawn in a scaled DC, it will not behave exactly as wxMSW - if (m_graphics_changed) NewGraphics (); + NewGraphicsIfNeeded(); wxString s, sTmp; // calculate bounding box @@ -224,47 +256,49 @@ void wxSVGFileDCImpl::DoDrawRotatedText(const wxString& sText, wxCoord x, wxCoor CalcBoundingBox((wxCoord)(x + w*cos(rad)), (wxCoord)(y - h*sin(rad))); // wxT("bottom left") and wxT("bottom right") - x += (wxCoord)(h*sin(rad)); - y += (wxCoord)(h*cos(rad)); - CalcBoundingBox(x, y); CalcBoundingBox((wxCoord)(x + h*sin(rad)), (wxCoord)(y + h*cos(rad))); + CalcBoundingBox((wxCoord)(x + h*sin(rad) + w*cos(rad)), (wxCoord)(y + h*cos(rad) - w*sin(rad))); if (m_backgroundMode == wxBRUSHSTYLE_SOLID) { // draw background first // just like DoDrawRectangle except we pass the text color to it and set the border to a 1 pixel wide text background - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::Draw Rotated Text Call plotting text background")); - sTmp.Printf ( wxT(" "), -angle, x,y ); - s = s + sTmp + newline; + sTmp.Printf ( wxT(" "), NumStr(-angle), x,y ); + s += sTmp + wxT("\n"); write(s); } + + // convert x,y to SVG text x,y (the coordinates of the text baseline) + x = (wxCoord)(x + (h-desc)*sin(rad)); + y = (wxCoord)(y + (h-desc)*cos(rad)); + //now do the text itself s.Printf (wxT(" 0) s = s + wxT("style=\"font-family:") + sTmp + wxT("; "); - else s = s + wxT("style=\" "); + sTmp = m_font.GetFaceName(); + if (sTmp.Len() > 0) s += wxT("style=\"font-family:") + sTmp + wxT("; "); + else s += wxT("style=\" "); wxString fontweights [3] = { wxT("normal"), wxT("lighter"), wxT("bold") }; - s = s + wxT("font-weight:") + fontweights[m_font.GetWeight() - wxNORMAL] + semicolon + space; + s += wxT("font-weight:") + fontweights[m_font.GetWeight() - wxNORMAL] + wxT("; "); wxString fontstyles [5] = { wxT("normal"), wxT("style error"), wxT("style error"), wxT("italic"), wxT("oblique") }; - s = s + wxT("font-style:") + fontstyles[m_font.GetStyle() - wxNORMAL] + semicolon + space; - - sTmp.Printf (wxT("font-size:%dpt; fill:#"), m_font.GetPointSize () ); - s = s + sTmp; - s = s + wxColStr (m_textForegroundColour) + wxT("; stroke:#") + wxColStr (m_textForegroundColour) + wxT("; "); - sTmp.Printf ( wxT("stroke-width:0;\" transform=\"rotate( %.2g %d %d ) \" >"), -angle, x,y ); - s = s + sTmp + sText + wxT(" ") + newline; + s += wxT("font-style:") + fontstyles[m_font.GetStyle() - wxNORMAL] + wxT("; "); + + sTmp.Printf (wxT("font-size:%dpt; "), m_font.GetPointSize() ); + s += sTmp; + //text will be solid, unless alpha value isn't opaque in the foreground colour + s += wxBrushString(m_textForegroundColour) + wxPenString(m_textForegroundColour); + sTmp.Printf ( wxT("stroke-width:0;\" transform=\"rotate( %s %d %d ) \" >"), NumStr(-angle), x,y ); + s += sTmp + sText + wxT(" ") + wxT("\n"); if (m_OK) { write(s); } - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DrawRotatedText Call executed")); } void wxSVGFileDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) @@ -275,16 +309,15 @@ void wxSVGFileDCImpl::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoo void wxSVGFileDCImpl::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius ) { - if (m_graphics_changed) NewGraphics (); + NewGraphicsIfNeeded(); wxString s; - s.Printf ( wxT(" ") + newline; + s += wxT(" /> \n"); write(s); - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawRoundedRectangle Call executed")); CalcBoundingBox(x, y); CalcBoundingBox(x + width, y + height); } @@ -293,44 +326,40 @@ void wxSVGFileDCImpl::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, wxPolygonFillMode fillStyle) { - if (m_graphics_changed) NewGraphics (); + NewGraphicsIfNeeded(); wxString s, sTmp; s = wxT(" "); - s = s + newline; + s += wxT("\" /> \n"); write(s); - - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawPolygon Call executed")); } void wxSVGFileDCImpl::DoDrawEllipse (wxCoord x, wxCoord y, wxCoord width, wxCoord height) { - if (m_graphics_changed) NewGraphics (); + NewGraphicsIfNeeded(); int rh = height /2; int rw = width /2; wxString s; s.Printf ( wxT(" ") + newline; + s += wxT(" /> \n"); write(s); - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawEllipse Call executed")); CalcBoundingBox(x, y); CalcBoundingBox(x + width, y + height); } @@ -346,7 +375,7 @@ void wxSVGFileDCImpl::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, Might be better described as Pie drawing */ - if (m_graphics_changed) NewGraphics (); + NewGraphicsIfNeeded(); wxString s; // we need the radius of the circle which has two estimates @@ -371,19 +400,17 @@ void wxSVGFileDCImpl::DoDrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, int fSweep = 0; // flag for sweep always 0 - s.Printf ( wxT(" ") + newline; + s += wxT(" \" /> \n"); if (m_OK) { write(s); } - - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawArc Call executed")); } void wxSVGFileDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea) @@ -407,7 +434,7 @@ void wxSVGFileDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h, //known bug: SVG draws with the current pen along the radii, but this does not happen in wxMSW - if (m_graphics_changed) NewGraphics (); + NewGraphicsIfNeeded(); wxString s; //radius @@ -438,15 +465,65 @@ void wxSVGFileDCImpl::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h, int(xs), int(ys), int(rx), int(ry), fArc, fSweep, int(xe), int(ye), int(xc), int(yc) ); - - s = s + wxT(" \" /> ") + newline; + s += wxT(" \" /> \n"); if (m_OK) { write(s); } +} - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawEllipticArc Call executed")); +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 << "\n" + "\n" + "\n" + "\n" + "\n" + "\n" + "\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 << "\n"; + + // Close clipping group elements + for ( size_t i = 0; i < m_clipUniqueId; i++ ) + { + svg << ""; + } + 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 @@ -457,17 +534,14 @@ void wxSVGFileDCImpl::DoGetTextExtent(const wxString& string, wxCoord *w, wxCoor sDC.SetFont (m_font); if ( font != NULL ) sDC.SetFont ( *font ); sDC.GetTextExtent(string, w, h, descent, externalLeading ); - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetTextExtent Call executed")); } wxCoord wxSVGFileDCImpl::GetCharHeight() const - { wxScreenDC sDC; sDC.SetFont (m_font); - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetCharHeight Call executing")); - return ( sDC.GetCharHeight() ); + return sDC.GetCharHeight(); } @@ -476,9 +550,7 @@ wxCoord wxSVGFileDCImpl::GetCharWidth() const wxScreenDC sDC; sDC.SetFont (m_font); - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::GetCharWidth Call executing")); - return ( sDC.GetCharWidth() ); - + return sDC.GetCharWidth(); } @@ -488,26 +560,21 @@ wxCoord wxSVGFileDCImpl::GetCharWidth() const void wxSVGFileDCImpl::SetBackground( const wxBrush &brush ) { - m_backgroundBrush = brush; - return; } void wxSVGFileDCImpl::SetBackgroundMode( int mode ) { m_backgroundMode = mode; - return; } void wxSVGFileDCImpl::SetBrush(const wxBrush& brush) - { m_brush = brush; m_graphics_changed = true; - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetBrush Call executed")); } @@ -518,21 +585,28 @@ void wxSVGFileDCImpl::SetPen(const wxPen& pen) m_pen = pen; m_graphics_changed = true; - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetPen Call executed")); } -void wxSVGFileDCImpl::NewGraphics () +void wxSVGFileDCImpl::NewGraphicsIfNeeded() { + if ( !m_graphics_changed ) + return; - int w = m_pen.GetWidth (); - wxColour c = m_pen.GetColour (); + m_graphics_changed = false; - wxString s, sBrush, sPenCap, sPenJoin, sPenStyle, sLast, sWarn; + write(wxS("\n")); - sBrush = wxT("\n \n"); } - sLast.Printf( wxT("stroke-width:%d\" \n transform=\"translate(%.2g %.2g) scale(%.2g %.2g)\">"), - w, double(m_logicalOriginX), double(m_logicalOriginY), m_scaleX, m_scaleY ); + 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 + newline + sWarn; + s = sBrush + sPenCap + sPenJoin + sPenStyle + sLast + wxT("\n"); write(s); - m_graphics_changed = false; - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::NewGraphics Call executed")); } @@ -584,8 +644,6 @@ void wxSVGFileDCImpl::SetFont(const wxFont& font) { m_font = font; - - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::SetFont Call executed")); } // export a bitmap as a raster image in png @@ -610,7 +668,6 @@ bool wxSVGFileDCImpl::DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoor memDC.Blit(0, 0, width, height, source, xsrc, ysrc); memDC.SelectObject( wxNullBitmap ); DoDrawBitmap(myBitmap, xdest, ydest); - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoBlit Call executed")); return false; } @@ -622,13 +679,11 @@ void wxSVGFileDCImpl::DoDrawIcon(const class wxIcon & myIcon, wxCoord x, wxCoord memDC.DrawIcon(myIcon,0,0); memDC.SelectObject( wxNullBitmap ); DoDrawBitmap(myBitmap, x, y); - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawIcon Call executed")); - return; } void wxSVGFileDCImpl::DoDrawBitmap(const class wxBitmap & bmp, wxCoord x, wxCoord y , bool WXUNUSED(bTransparent) /*=0*/ ) { - if (m_graphics_changed) NewGraphics (); + NewGraphicsIfNeeded(); wxString sTmp, s, sPNG; if ( wxImage::FindHandler(wxBITMAP_TYPE_PNG) == NULL ) @@ -657,25 +712,22 @@ void wxSVGFileDCImpl::DoDrawBitmap(const class wxBitmap & bmp, wxCoord x, wxCoor int w = myBitmap.GetWidth(); int h = myBitmap.GetHeight(); sTmp.Printf ( wxT(" \n"), sPNG.c_str() ); - s = s + sTmp + wxT("Image from wxSVG ") + newline; + s += sTmp + wxT("Image from wxSVG ") + wxT("\n"); if (m_OK && bPNG_OK) { write(s); } - m_OK = m_outfile->Ok () && bPNG_OK; - wxASSERT_MSG(!wxSVG_DEBUG, wxT("wxSVGFileDC::DoDrawBitmap Call executed")); - - return; + m_OK = m_outfile->IsOk() && bPNG_OK; } void wxSVGFileDCImpl::write(const wxString &s) { const wxCharBuffer buf = s.utf8_str(); m_outfile->Write(buf, strlen((const char *)buf)); - m_OK = m_outfile->Ok(); + m_OK = m_outfile->IsOk(); }