Better compatibility with old files when creating an image cache

[wxWidgets.git] / src / html / winpars.cpp

diff --git a/src/html/winpars.cpp b/src/html/winpars.cpp
index 7f3fc64e50cba22ea69c2658441be164a85c459c..2043afea644d8fb37e15ed0e6799f9b41cc8844d 100644 (file)
--- a/src/html/winpars.cpp
+++ b/src/html/winpars.cpp
@@ -25,6 +25,7 @@
 #include "wx/html/htmldefs.h"
 #include "wx/html/winpars.h"
 #include "wx/html/htmlwin.h"
+#include "wx/html/styleparams.h"
 #include "wx/fontmap.h"
 #include "wx/uri.h"
 
@@ -214,6 +215,11 @@ void wxHtmlWinParser::InitParser(const wxString& source)
     m_Link = wxHtmlLinkInfo( wxEmptyString );
     m_LinkColor.Set(0, 0, 0xFF);
     m_ActualColor.Set(0, 0, 0);
+    const wxColour windowColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW) ;
+    m_ActualBackgroundColor = m_windowInterface
+                            ? m_windowInterface->GetHTMLBackgroundColour()
+                            : windowColour;
+    m_ActualBackgroundMode = wxTRANSPARENT;
     m_Align = wxHTML_ALIGN_LEFT;
     m_ScriptMode = wxHTML_SCRIPT_NORMAL;
     m_ScriptBaseline = 0;
@@ -238,16 +244,13 @@ void wxHtmlWinParser::InitParser(const wxString& source)
 #endif
 
     m_Container->InsertCell(new wxHtmlColourCell(m_ActualColor));
-    wxColour windowColour = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW) ;
 
     m_Container->InsertCell
                  (
                    new wxHtmlColourCell
                        (
-                         m_windowInterface
-                            ? m_windowInterface->GetHTMLBackgroundColour()
-                            : windowColour,
-                         wxHTML_CLR_BACKGROUND
+                         m_ActualBackgroundColor,
+                         m_ActualBackgroundMode == wxTRANSPARENT ? wxHTML_CLR_TRANSPARENT_BACKGROUND : wxHTML_CLR_BACKGROUND
                        )
                   );
 
@@ -559,6 +562,35 @@ void wxHtmlWinParser::SetDC(wxDC *dc, double pixel_scale, double font_scale)
     m_FontScale = font_scale;
 }
 
+void wxHtmlWinParser::SetFontPointSize(int pt)
+{
+    if (pt <= m_FontsSizes[0])
+        m_FontSize = 1;
+    else if (pt >= m_FontsSizes[6])
+        m_FontSize = 7;
+    else
+    {
+        // Find the font closest to the given value with a simple linear search
+        // (binary search is not worth it here for so small number of elements)
+        for ( int n = 0; n < 6; n++ )
+        {
+            if ( (pt > m_FontsSizes[n]) && (pt <= m_FontsSizes[n + 1]) )
+            {
+                if ( (pt - m_FontsSizes[n]) >= (m_FontsSizes[n + 1] - pt) )
+                {
+                    // The actual size is closer to the next entry than to this
+                    // one, so use it.
+                    n++;
+                }
+
+                // Notice that m_FontSize starts from 1, hence +1 here.
+                m_FontSize = n + 1;
+
+                break;
+            }
+        }
+    }
+}
 
 wxFont* wxHtmlWinParser::CreateCurrentFont()
 {
@@ -581,8 +613,7 @@ wxFont* wxHtmlWinParser::CreateCurrentFont()
 #endif
                             ))
     {
-        delete *fontptr;
-        *fontptr = NULL;
+        wxDELETE(*fontptr);
     }
 
     if (*fontptr == NULL)
@@ -644,11 +675,7 @@ void wxHtmlWinParser::SetInputEncoding(wxFontEncoding enc)
     m_nbsp = 0;
 
     m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT;
-    if (m_EncConv)
-    {
-        delete m_EncConv;
-        m_EncConv = NULL;
-    }
+    wxDELETE(m_EncConv);
 
     if (enc == wxFONTENCODING_DEFAULT)
         return;
@@ -713,8 +740,7 @@ void wxHtmlWinParser::SetInputEncoding(wxFontEncoding enc)
         wxLogError(_("Failed to display HTML document in %s encoding"),
                    wxFontMapper::GetEncodingName(enc).c_str());
         m_InputEnc = m_OutputEnc = wxFONTENCODING_DEFAULT;
-        delete m_EncConv;
-        m_EncConv = NULL;
+        wxDELETE(m_EncConv);
     }
 }
 #endif
@@ -728,6 +754,112 @@ void wxHtmlWinParser::SetInputEncoding(wxFontEncoding enc)
 
 IMPLEMENT_ABSTRACT_CLASS(wxHtmlWinTagHandler, wxHtmlTagHandler)
 
+void wxHtmlWinTagHandler::ApplyStyle(const wxHtmlStyleParams &styleParams)
+{
+    wxString str;
+
+    str = styleParams.GetParam(wxS("color"));
+    if ( !str.empty() )
+    {
+        wxColour clr;
+        if ( wxHtmlTag::ParseAsColour(str, &clr) )
+        {
+            m_WParser->SetActualColor(clr);
+            m_WParser->GetContainer()->InsertCell(new wxHtmlColourCell(clr));
+        }
+    }
+
+    str = styleParams.GetParam(wxS("background-color"));
+    if ( !str.empty() )
+    {
+        wxColour clr;
+        if ( wxHtmlTag::ParseAsColour(str, &clr) )
+        {
+            m_WParser->SetActualBackgroundColor(clr);
+            m_WParser->SetActualBackgroundMode(wxSOLID);
+            m_WParser->GetContainer()->InsertCell(new wxHtmlColourCell(clr, wxHTML_CLR_BACKGROUND));
+        }
+    }
+
+    str = styleParams.GetParam(wxS("font-size"));
+    if ( !str.empty() )
+    {
+        // Point size
+        int foundIndex = str.Find(wxS("pt"));
+        if (foundIndex != wxNOT_FOUND)
+        {
+            str.Truncate(foundIndex);
+
+            long sizeValue;
+            if (str.ToLong(&sizeValue) == true)
+            {
+                // Set point size
+                m_WParser->SetFontPointSize(sizeValue);
+                m_WParser->GetContainer()->InsertCell(
+                    new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
+            }
+        }
+        // else: check for other ways of specifying size (TODO)
+    }
+
+    str = styleParams.GetParam(wxS("font-weight"));
+    if ( !str.empty() )
+    {
+        // Only bold and normal supported just now
+        if ( str == wxS("bold") )
+        {
+            m_WParser->SetFontBold(true);
+            m_WParser->GetContainer()->InsertCell(
+                new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
+        }
+        else if ( str == wxS("normal") )
+        {
+            m_WParser->SetFontBold(false);
+            m_WParser->GetContainer()->InsertCell(
+                new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
+        }
+    }
+
+    str = styleParams.GetParam(wxS("font-style"));
+    if ( !str.empty() )
+    {
+        // "oblique" and "italic" are more or less the same.
+        // "inherit" (using the parent font) is not supported.
+        if ( str == wxS("oblique") || str == wxS("italic") )
+        {
+            m_WParser->SetFontItalic(true);
+            m_WParser->GetContainer()->InsertCell(
+                new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
+        }
+        else if ( str == wxS("normal") )
+        {
+            m_WParser->SetFontItalic(false);
+            m_WParser->GetContainer()->InsertCell(
+                new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
+        }
+    }
+
+    str = styleParams.GetParam(wxS("text-decoration"));
+    if ( !str.empty() )
+    {
+        // Only underline is supported.
+        if ( str == wxS("underline") )
+        {
+            m_WParser->SetFontUnderlined(true);
+            m_WParser->GetContainer()->InsertCell(
+                new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
+        }
+    }
+
+    str = styleParams.GetParam(wxS("font-family"));
+    if ( !str.empty() )
+    {
+        m_WParser->SetFontFace(str);
+        m_WParser->GetContainer()->InsertCell(
+            new wxHtmlFontCell(m_WParser->CreateCurrentFont()));
+    }
+}
+
 //-----------------------------------------------------------------------------
 // wxHtmlTagsModule
 //-----------------------------------------------------------------------------