init
[qstardict] / qstardict / dictbrowser.cpp
diff --git a/qstardict/dictbrowser.cpp b/qstardict/dictbrowser.cpp
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+/*****************************************************************************
+ * dictbrowser.cpp - QStarDict, a StarDict clone written using Qt            *
+ * Copyright (C) 2007 Alexander Rodin                                        *
+ *                                                                           *
+ * This program is free software; you can redistribute it and/or modify      *
+ * it under the terms of the GNU General Public License as published by      *
+ * the Free Software Foundation; either version 2 of the License, or         *
+ * (at your option) any later version.                                       *
+ *                                                                           *
+ * This program is distributed in the hope that it will be useful,           *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of            *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             *
+ * GNU General Public License for more details.                              *
+ *                                                                           *
+ * You should have received a copy of the GNU General Public License along   *
+ * with this program; if not, write to the Free Software Foundation, Inc.,   *
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.               *
+ *****************************************************************************/
+
+#include "dictbrowser.h"
+
+#include <QDesktopServices>
+#include <QMouseEvent>
+#include <QTextBlock>
+#include <QTextCharFormat>
+#include <QTextDocument>
+#include <QTextDocumentFragment>
+#include "../plugins/dictplugin.h"
+
+namespace
+{
+const QString translationCSS = 
+    "body {\n"
+        "font-size: 10pt; }\n"
+    "font.dict_name {\n"
+        "color: blue;\n"
+        "font-style: italic; }\n"
+    "font.title {\n"
+        "font-size: 16pt;\n"
+        "font-weight: bold; }\n"
+    "font.explanation {\n"
+        "color: #7f7f7f;\n"
+        "font-style: italic; }\n"
+    "font.abbreviature {\n"
+        "font-style: italic; }\n"
+    "font.example {\n"
+        "font-style: italic; }\n"
+    "font.transcription {\n"
+        "font-weight: bold; }\n";
+}
+
+namespace QStarDict
+{
+
+DictBrowser::DictBrowser(QWidget *parent)
+    : QTextBrowser(parent),
+      m_dict(0),
+      m_highlighted(false)
+{
+    document()->setDefaultStyleSheet(translationCSS);
+    setOpenLinks(false);
+    setOpenExternalLinks(false);
+    connect(this, SIGNAL(anchorClicked(const QUrl &)), SLOT(on_anchorClicked(const QUrl &)));
+}
+
+QVariant DictBrowser::loadResource(int type, const QUrl &name)
+{
+    if (type == QTextDocument::HtmlResource && name.scheme() == "qstardict")
+    {
+        QString str = name.toString(QUrl::RemoveScheme);
+        QString result = m_dict->translate(str);
+        if (result.isEmpty())
+            result = "<table><tr><td><img src=\":/icons/dialog-warning.png\" width=64 height=64/></td><td valign=middle>" +
+                tr("The word <b>%1</b> is not found.").arg(str) +
+                "</td></tr></table>";
+        return "<title>Translation for \"" + str + "\"</title>\n"
+            + "<body>" + result + "</body>";
+    }
+    else if (name.scheme() == "plugin")
+    {
+        DictPlugin *plugin = m_dict->plugin(name.host());
+        if (! plugin)
+            return QVariant();
+        return plugin->resource(type, name);
+    }
+    return QTextBrowser::loadResource(type, name);
+}
+
+void DictBrowser::mouseMoveEvent(QMouseEvent *event)
+{
+    if (m_highlighted)
+    {
+        m_oldCursor.setCharFormat(m_oldFormat);
+        m_highlighted = false;
+    }
+    if (event->modifiers().testFlag(Qt::ControlModifier))
+    {
+        QTextCursor cursor = cursorForPosition(event->pos());
+        cursor.select(QTextCursor::WordUnderCursor);
+        QString selection = cursor.selection().toPlainText().simplified();
+        if (m_dict->isTranslatable(selection))
+        {
+            m_oldCursor = cursor;
+            m_oldFormat = cursor.charFormat();
+
+            QTextCharFormat format = m_oldFormat;
+            format.setForeground(Qt::blue);
+            format.setFontUnderline(true);
+            cursor.setCharFormat(format);
+
+            m_highlighted = true;
+        }
+    }
+
+    QTextBrowser::mouseMoveEvent(event);
+}
+
+void DictBrowser::mousePressEvent(QMouseEvent *event)
+{
+    if (event->modifiers().testFlag(Qt::ControlModifier))
+    {
+        QTextCursor cursor = cursorForPosition(event->pos());
+        cursor.select(QTextCursor::WordUnderCursor);
+        QString selection = cursor.selection().toPlainText().simplified();
+        if (m_dict->isTranslatable(selection))
+        {
+            setSource(selection);
+            if (m_highlighted)
+                m_highlighted = false;
+        }
+    }
+    QTextBrowser::mousePressEvent(event);
+}
+
+void DictBrowser::on_anchorClicked(const QUrl &link)
+{
+    QString scheme = link.scheme();
+    if (scheme == "plugin" || scheme == "qrc")
+        setSource(link);
+    else
+        QDesktopServices::openUrl(link);
+}
+
+}
+
+// vim: tabstop=4 softtabstop=4 shiftwidth=4 expandtab cindent textwidth=120 formatoptions=tc
+