Separated XML and HTML rich text I/O handlers

Cleaned up XML I/O Added HTML handler to build system Added encoding member for saving files output git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@36427 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2005-12-18 12:31:07 +00:00
parent 63886f6d98
commit b71e9aa4e2
13 changed files with 452 additions and 245 deletions
--- a/src/richtext/richtexthtml.cpp
+++ b/src/richtext/richtexthtml.cpp
@@ -0,0 +1,176 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        richtext/richtexthtml.cpp
+// Purpose:     HTML I/O for wxRichTextCtrl
+// Author:      Julian Smart
+// Modified by:
+// Created:     2005-09-30
+// RCS-ID:      $Id$
+// Copyright:   (c) Julian Smart
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+  #pragma hdrstop
+#endif
+
+#if wxUSE_RICHTEXT
+
+#include "wx/richtext/richtexthtml.h"
+
+#ifndef WX_PRECOMP
+  #include "wx/wx.h"
+#endif
+
+#include "wx/filename.h"
+#include "wx/wfstream.h"
+#include "wx/txtstrm.h"
+
+IMPLEMENT_DYNAMIC_CLASS(wxRichTextHTMLHandler, wxRichTextFileHandler)
+
+/// Can we handle this filename (if using files)? By default, checks the extension.
+bool wxRichTextHTMLHandler::CanHandle(const wxString& filename) const
+{
+    wxString path, file, ext;
+    wxSplitPath(filename, & path, & file, & ext);
+
+    return (ext.Lower() == wxT("html") || ext.Lower() == wxT("htm"));
+}
+
+
+#if wxUSE_STREAMS
+bool wxRichTextHTMLHandler::DoLoadFile(wxRichTextBuffer *WXUNUSED(buffer), wxInputStream& WXUNUSED(stream))
+{
+    return false;
+}
+
+/*
+ * We need to output only _changes_ in character formatting.
+ */
+
+bool wxRichTextHTMLHandler::DoSaveFile(wxRichTextBuffer *buffer, wxOutputStream& stream)
+{
+    buffer->Defragment();
+
+    wxTextOutputStream str(stream);
+
+    wxTextAttrEx currentParaStyle = buffer->GetAttributes();
+    wxTextAttrEx currentCharStyle = buffer->GetAttributes();
+
+    str << wxT("<html><head></head><body>\n");
+
+    wxRichTextObjectList::compatibility_iterator node = buffer->GetChildren().GetFirst();
+    while (node)
+    {
+        wxRichTextParagraph* para = wxDynamicCast(node->GetData(), wxRichTextParagraph);
+        wxASSERT (para != NULL);
+
+        if (para)
+        {
+            OutputParagraphFormatting(currentParaStyle, para->GetAttributes(), stream, true);
+
+            wxRichTextObjectList::compatibility_iterator node2 = para->GetChildren().GetFirst();
+            while (node2)
+            {
+                wxRichTextObject* obj = node2->GetData();
+                wxRichTextPlainText* textObj = wxDynamicCast(obj, wxRichTextPlainText);
+                if (textObj && !textObj->IsEmpty())
+                {
+                    OutputCharacterFormatting(currentCharStyle, obj->GetAttributes(), stream, true);
+
+                    str << textObj->GetText();
+
+                    OutputCharacterFormatting(currentCharStyle, obj->GetAttributes(), stream, false);
+                }
+
+                node2 = node2->GetNext();
+            }
+
+            OutputParagraphFormatting(currentParaStyle, para->GetAttributes(), stream, false);
+
+            str << wxT("<P>\n");
+        }
+
+        node = node->GetNext();
+    }
+
+    str << wxT("</body></html>\n");
+
+    return true;
+}
+
+/// Output character formatting
+void wxRichTextHTMLHandler::OutputCharacterFormatting(const wxTextAttrEx& WXUNUSED(currentStyle), const wxTextAttrEx& thisStyle, wxOutputStream& stream, bool start)
+{
+    wxTextOutputStream str(stream);
+
+    bool isBold = false;
+    bool isItalic = false;
+    bool isUnderline = false;
+    wxString faceName;
+
+    if (thisStyle.GetFont().Ok())
+    {
+        if (thisStyle.GetFont().GetWeight() == wxBOLD)
+            isBold = true;
+        if (thisStyle.GetFont().GetStyle() == wxITALIC)
+            isItalic = true;
+        if (thisStyle.GetFont().GetUnderlined())
+            isUnderline = true;
+
+        faceName = thisStyle.GetFont().GetFaceName();
+    }
+
+    if (start)
+    {
+        if (isBold)
+            str << wxT("<b>");
+        if (isItalic)
+            str << wxT("<i>");
+        if (isUnderline)
+            str << wxT("<u>");
+    }
+    else
+    {
+        if (isUnderline)
+            str << wxT("</u>");
+        if (isItalic)
+            str << wxT("</i>");
+        if (isBold)
+            str << wxT("</b>");
+    }
+}
+
+/// Output paragraph formatting
+void wxRichTextHTMLHandler::OutputParagraphFormatting(const wxTextAttrEx& WXUNUSED(currentStyle), const wxTextAttrEx& thisStyle, wxOutputStream& stream, bool start)
+{
+    // TODO: lists, indentation (using tables), fonts, right-align, ...
+
+    wxTextOutputStream str(stream);
+    bool isCentered = false;
+
+    if (thisStyle.GetAlignment() == wxTEXT_ALIGNMENT_CENTRE)
+    {
+        isCentered = true;
+    }
+
+    if (start)
+    {
+        if (isCentered)
+            str << wxT("<center>");
+    }
+    else
+    {
+        if (isCentered)
+            str << wxT("</center>");
+    }
+}
+
+#endif
+    // wxUSE_STREAMS
+
+#endif
+    // wxUSE_RICHTEXT
+