X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1d203ed837619b76fe3336a6080efbe6e6002152..d485bda109d5ef0fef36a3f737549e9b9f54baab:/src/html/winpars.cpp

diff --git a/src/html/winpars.cpp b/src/html/winpars.cpp
index cb4a11b7f1..2043afea64 100644
--- a/src/html/winpars.cpp
+++ b/src/html/winpars.cpp
@@ -15,7 +15,7 @@
 
 #if wxUSE_HTML && wxUSE_STREAMS
 
-#ifndef WXPRECOMP
+#ifndef WX_PRECOMP
     #include "wx/intl.h"
     #include "wx/dc.h"
     #include "wx/log.h"
@@ -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"
 
@@ -47,11 +48,14 @@ wxHtmlWinParser::wxHtmlWinParser(wxHtmlWindowInterface *wndIface)
     m_CharHeight = m_CharWidth = 0;
     m_UseLink = false;
 #if !wxUSE_UNICODE
+    m_nbsp = 0;
     m_EncConv = NULL;
     m_InputEnc = wxFONTENCODING_ISO8859_1;
     m_OutputEnc = wxFONTENCODING_DEFAULT;
 #endif
+    m_whitespaceMode = Whitespace_Normal;
     m_lastWordCell = NULL;
+    m_posColumn = 0;
 
     {
         int i, j, k, l, m;
@@ -199,15 +203,23 @@ void wxHtmlWinParser::InitParser(const wxString& source)
     m_FontBold = m_FontItalic = m_FontUnderlined = m_FontFixed = FALSE;
     m_FontSize = 3; //default one
     CreateCurrentFont();           // we're selecting default font into
-    m_DC->GetTextExtent( wxT("H"), &m_CharWidth, &m_CharHeight);
-                /* NOTE : we're not using GetCharWidth/Height() because
-                   of differences under X and win
-                 */
+
+    // we're not using GetCharWidth/Height() because of
+    // differences under X and win
+    wxCoord w,h;
+    m_DC->GetTextExtent( wxT("H"), &w, &h);
+    m_CharWidth = w;
+    m_CharHeight = h;
 
     m_UseLink = false;
     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;
@@ -232,16 +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
                        )
                   );
 
@@ -332,90 +341,187 @@ wxFSFile *wxHtmlWinParser::OpenURL(wxHtmlURLType type,
     if ( status == wxHTML_BLOCK )
         return NULL;
 
-    return GetFS()->OpenFile(myurl);
+    int flags = wxFS_READ;
+    if (type == wxHTML_URL_IMAGE)
+        flags |= wxFS_SEEKABLE;
+
+    return GetFS()->OpenFile(myurl, flags);
 }
 
-void wxHtmlWinParser::AddText(const wxChar* txt)
+#define NBSP_UNICODE_VALUE  (wxChar(160))
+#if !wxUSE_UNICODE
+    #define CUR_NBSP_VALUE m_nbsp
+#else
+    #define CUR_NBSP_VALUE NBSP_UNICODE_VALUE
+#endif
+
+void wxHtmlWinParser::AddText(const wxString& txt)
 {
-    size_t i = 0,
-           x,
-           lng = wxStrlen(txt);
-    register wxChar d;
-    int templen = 0;
-    wxChar nbsp = GetEntitiesParser()->GetCharForCode(160 /* nbsp */);
-
-    if (lng+1 > m_tmpStrBufSize)
-    {
-        delete[] m_tmpStrBuf;
-        m_tmpStrBuf = new wxChar[lng+1];
-        m_tmpStrBufSize = lng+1;
-    }
-    wxChar *temp = m_tmpStrBuf;
+#if !wxUSE_UNICODE
+    if ( m_nbsp == 0 )
+        m_nbsp = GetEntitiesParser()->GetCharForCode(NBSP_UNICODE_VALUE);
+#endif
 
-    if (m_tmpLastWasSpace)
+    if ( m_whitespaceMode == Whitespace_Normal )
     {
-        while ((i < lng) &&
-               ((txt[i] == wxT('\n')) || (txt[i] == wxT('\r')) || (txt[i] == wxT(' ')) ||
-                (txt[i] == wxT('\t')))) i++;
-    }
+        int templen = 0;
 
-    while (i < lng)
-    {
-        x = 0;
-        d = temp[templen++] = txt[i];
-        if ((d == wxT('\n')) || (d == wxT('\r')) || (d == wxT(' ')) || (d == wxT('\t')))
+        size_t lng = txt.length();
+        if (lng+1 > m_tmpStrBufSize)
         {
-            i++, x++;
-            while ((i < lng) && ((txt[i] == wxT('\n')) || (txt[i] == wxT('\r')) ||
-                                 (txt[i] == wxT(' ')) || (txt[i] == wxT('\t')))) i++, x++;
+            delete[] m_tmpStrBuf;
+            m_tmpStrBuf = new wxChar[lng+1];
+            m_tmpStrBufSize = lng+1;
         }
-        else i++;
+        wxChar *temp = m_tmpStrBuf;
+
+        wxString::const_iterator i = txt.begin();
+        const wxString::const_iterator end = txt.end();
 
-        if (x)
+        if (m_tmpLastWasSpace)
         {
-            temp[templen-1] = wxT(' ');
-            DoAddText(temp, templen, nbsp);
-            m_tmpLastWasSpace = true;
+            while ( (i < end) &&
+                    (*i == wxT('\n') || *i == wxT('\r') || *i == wxT(' ') ||
+                     *i == wxT('\t')) )
+            {
+                ++i;
+            }
         }
-    }
 
-    if (templen && (templen > 1 || temp[0] != wxT(' ')))
+        while (i < end)
+        {
+            size_t x = 0;
+            const wxChar d = temp[templen++] = *i;
+            if ((d == wxT('\n')) || (d == wxT('\r')) || (d == wxT(' ')) || (d == wxT('\t')))
+            {
+                ++i, ++x;
+                while ( (i < end) &&
+                        (*i == wxT('\n') || *i == wxT('\r') ||
+                         *i == wxT(' ') || *i == wxT('\t')) )
+                {
+                    ++i;
+                    ++x;
+                }
+            }
+            else
+            {
+                ++i;
+            }
+
+            if (x)
+            {
+                temp[templen-1] = wxT(' ');
+                FlushWordBuf(temp, templen);
+                m_tmpLastWasSpace = true;
+            }
+        }
+
+        if (templen && (templen > 1 || temp[0] != wxT(' ')))
+        {
+            FlushWordBuf(temp, templen);
+            m_tmpLastWasSpace = false;
+        }
+    }
+    else // m_whitespaceMode == Whitespace_Pre
     {
-        DoAddText(temp, templen, nbsp);
+        if ( txt.find(CUR_NBSP_VALUE) != wxString::npos )
+        {
+            // we need to substitute spaces for &nbsp; here just like we
+            // did in the Whitespace_Normal branch above
+            wxString txt2(txt);
+            txt2.Replace(CUR_NBSP_VALUE, ' ');
+            AddPreBlock(txt2);
+        }
+        else
+        {
+            AddPreBlock(txt);
+        }
+
+        // don't eat any whitespace in <pre> block
         m_tmpLastWasSpace = false;
     }
 }
 
-void wxHtmlWinParser::DoAddText(wxChar *temp, int& templen, wxChar nbsp)
+void wxHtmlWinParser::FlushWordBuf(wxChar *buf, int& len)
 {
-    temp[templen] = 0;
-    templen = 0;
+    buf[len] = 0;
+
+    for ( int i = 0; i < len; i++ )
+    {
+        if ( buf[i] == CUR_NBSP_VALUE )
+            buf[i] = ' ';
+    }
+
 #if !wxUSE_UNICODE
     if (m_EncConv)
-        m_EncConv->Convert(temp);
+        m_EncConv->Convert(buf);
 #endif
-    size_t len = wxStrlen(temp);
-    for (size_t j = 0; j < len; j++)
-    {
-        if (temp[j] == nbsp)
-            temp[j] = wxT(' ');
-    }
 
-    wxHtmlCell *c = new wxHtmlWordCell(temp, *(GetDC()));
+    AddWord(wxString(buf, len));
+
+    len = 0;
+}
 
-    ApplyStateToCell(c);
+void wxHtmlWinParser::AddWord(wxHtmlWordCell *word)
+{
+    ApplyStateToCell(word);
 
-    m_Container->InsertCell(c);
-    ((wxHtmlWordCell*)c)->SetPreviousWord(m_lastWordCell);
-    m_lastWordCell = (wxHtmlWordCell*)c;
+    m_Container->InsertCell(word);
+    word->SetPreviousWord(m_lastWordCell);
+    m_lastWordCell = word;
 }
 
+void wxHtmlWinParser::AddPreBlock(const wxString& text)
+{
+    if ( text.find('\t') != wxString::npos )
+    {
+        wxString text2;
+        text2.reserve(text.length());
+
+        const wxString::const_iterator end = text.end();
+        wxString::const_iterator copyFrom = text.begin();
+        size_t pos = 0;
+        int posColumn = m_posColumn;
+        for ( wxString::const_iterator i = copyFrom; i != end; ++i, ++pos )
+        {
+            if ( *i == '\t' )
+            {
+                if ( copyFrom != i )
+                    text2.append(copyFrom, i);
+
+                const unsigned SPACES_PER_TAB = 8;
+                const size_t expandTo = SPACES_PER_TAB - posColumn % SPACES_PER_TAB;
+                text2.append(expandTo, ' ');
+
+                posColumn += expandTo;
+                copyFrom = i + 1;
+            }
+            else
+            {
+                ++posColumn;
+            }
+        }
+        if ( copyFrom != text.end() )
+            text2.append(copyFrom, text.end());
+
+        AddWord(new wxHtmlWordWithTabsCell(text2, text, m_posColumn, *(GetDC())));
+
+        m_posColumn = posColumn;
+    }
+    else
+    {
+        // no special formatting needed
+        AddWord(text);
+        m_posColumn += text.length();
+    }
+}
 
 
 wxHtmlContainerCell* wxHtmlWinParser::OpenContainer()
 {
     m_Container = new wxHtmlContainerCell(m_Container);
     m_Container->SetAlignHor(m_Align);
+    m_posColumn = 0;
     m_tmpLastWasSpace = true;
         /* to avoid space being first character in paragraph */
     return m_Container;
@@ -441,12 +547,50 @@ wxHtmlContainerCell* wxHtmlWinParser::CloseContainer()
 
 void wxHtmlWinParser::SetFontSize(int s)
 {
-    if (s < 1) s = 1;
-    else if (s > 7) s = 7;
+    if (s < 1)
+        s = 1;
+    else if (s > 7)
+        s = 7;
     m_FontSize = s;
 }
 
 
+void wxHtmlWinParser::SetDC(wxDC *dc, double pixel_scale, double font_scale)
+{
+    m_DC = dc;
+    m_PixelScale = pixel_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()
 {
@@ -469,15 +613,14 @@ wxFont* wxHtmlWinParser::CreateCurrentFont()
 #endif
                             ))
     {
-        delete *fontptr;
-        *fontptr = NULL;
+        wxDELETE(*fontptr);
     }
 
     if (*fontptr == NULL)
     {
         *faceptr = face;
         *fontptr = new wxFont(
-                       (int) (m_FontsSizes[fs] * m_PixelScale),
+                       (int) (m_FontsSizes[fs] * m_FontScale),
                        ff ? wxMODERN : wxSWISS,
                        fi ? wxITALIC : wxNORMAL,
                        fb ? wxBOLD : wxNORMAL,
@@ -503,8 +646,10 @@ void wxHtmlWinParser::SetLink(const wxHtmlLinkInfo& link)
 
 void wxHtmlWinParser::SetFontFace(const wxString& face)
 {
-    if (GetFontFixed()) m_FontFaceFixed = face;
-    else m_FontFaceNormal = face;
+    if (GetFontFixed())
+        m_FontFaceFixed = face;
+    else
+        m_FontFaceNormal = face;
 
 #if !wxUSE_UNICODE
     if (m_InputEnc != wxFONTENCODING_DEFAULT)
@@ -526,36 +671,43 @@ void wxHtmlWinParser::ApplyStateToCell(wxHtmlCell *cell)
 #if !wxUSE_UNICODE
 void wxHtmlWinParser::SetInputEncoding(wxFontEncoding enc)
 {
+    // the character used for non-breakable space may change:
+    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;
+    if (enc == wxFONTENCODING_DEFAULT)
+        return;
 
     wxFontEncoding altfix, altnorm;
     bool availfix, availnorm;
 
-    // exact match?
     availnorm = wxFontMapper::Get()->IsEncodingAvailable(enc, m_FontFaceNormal);
     availfix = wxFontMapper::Get()->IsEncodingAvailable(enc, m_FontFaceFixed);
+
     if (availnorm && availfix)
+    {
+        // exact match?
         m_OutputEnc = enc;
+    }
 
-    // alternatives?
     else if (wxFontMapper::Get()->GetAltForEncoding(enc, &altnorm, m_FontFaceNormal, false) &&
              wxFontMapper::Get()->GetAltForEncoding(enc, &altfix, m_FontFaceFixed, false) &&
              altnorm == altfix)
+    {
+        // alternatives?
         m_OutputEnc = altnorm;
-
-    // at least normal face?
+    }
     else if (availnorm)
+    {
+        // at least normal face?
         m_OutputEnc = enc;
+    }
     else if (wxFontMapper::Get()->GetAltForEncoding(enc, &altnorm, m_FontFaceNormal, false))
+    {
         m_OutputEnc = altnorm;
-
+    }
     else
     {
 #ifndef __WXMAC__
@@ -568,11 +720,16 @@ void wxHtmlWinParser::SetInputEncoding(wxFontEncoding enc)
 
     m_InputEnc = enc;
     if (m_OutputEnc == wxFONTENCODING_DEFAULT)
+    {
         GetEntitiesParser()->SetEncoding(wxFONTENCODING_SYSTEM);
+    }
     else
+    {
         GetEntitiesParser()->SetEncoding(m_OutputEnc);
+    }
 
-    if (m_InputEnc == m_OutputEnc) return;
+    if (m_InputEnc == m_OutputEnc)
+        return;
 
     m_EncConv = new wxEncodingConverter();
     if (!m_EncConv->Init(m_InputEnc,
@@ -583,8 +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
@@ -598,6 +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
 //-----------------------------------------------------------------------------