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<h1>StatusEventItemDelegate.cpp</h1><a href="_status_event_item_delegate_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment">** This file is part of Vidalia, and is subject to the license terms in the</span>
<a name="l00003"></a>00003 <span class="comment">** LICENSE file, found in the top level directory of this distribution. If you</span>
<a name="l00004"></a>00004 <span class="comment">** did not receive the LICENSE file with this file, you may obtain it from the</span>
<a name="l00005"></a>00005 <span class="comment">** Vidalia source package distributed by the Vidalia Project at</span>
<a name="l00006"></a>00006 <span class="comment">** http://www.vidalia-project.net/. No part of Vidalia, including this file,</span>
<a name="l00007"></a>00007 <span class="comment">** may be copied, modified, propagated, or distributed except according to the</span>
<a name="l00008"></a>00008 <span class="comment">** terms described in the LICENSE file.</span>
<a name="l00009"></a>00009 <span class="comment">*/</span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="comment">/*</span>
<a name="l00012"></a>00012 <span class="comment">** \file StatusEventItemDelegate.cpp</span>
<a name="l00013"></a>00013 <span class="comment">** \version $Id: StatusEventItemDelegate.cpp 4080 2009-08-28 18:14:48Z edmanm $</span>
<a name="l00014"></a>00014 <span class="comment">** \brief Handles custom painting of items in a StatusEventWidget</span>
<a name="l00015"></a>00015 <span class="comment">*/</span>
<a name="l00016"></a>00016
<a name="l00017"></a>00017 <span class="preprocessor">#include "<a class="code" href="_status_event_item_delegate_8h.html">StatusEventItemDelegate.h</a>"</span>
<a name="l00018"></a>00018 <span class="preprocessor">#include "<a class="code" href="_status_event_item_8h.html">StatusEventItem.h</a>"</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="preprocessor">#include "<a class="code" href="_vidalia_8h.html">Vidalia.h</a>"</span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="preprocessor">#include <QPainter></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <QTextLine></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <QTextLayout></span>
<a name="l00025"></a>00025
<a name="l00026"></a><a class="code" href="class_status_event_item_delegate.html#ab67f11336528a0e2c62f80c1b6e0d4d6">00026</a> <a class="code" href="class_status_event_item_delegate.html#ab67f11336528a0e2c62f80c1b6e0d4d6">StatusEventItemDelegate::StatusEventItemDelegate</a>(QObject *parent)
<a name="l00027"></a>00027 : QItemDelegate(parent)
<a name="l00028"></a>00028 {
<a name="l00029"></a>00029 <a class="code" href="class_status_event_item_delegate.html#abd0807631bb84e8e087e884bf768fb29">_helpIcon</a> = QPixmap(<span class="stringliteral">":/images/16x16/system-help.png"</span>);
<a name="l00030"></a>00030 }
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="keywordtype">void</span>
<a name="l00033"></a><a class="code" href="class_status_event_item_delegate.html#ac42fa7c064f411bc234cbb9e8c10112e">00033</a> <a class="code" href="class_status_event_item_delegate.html#ac42fa7c064f411bc234cbb9e8c10112e">StatusEventItemDelegate::paint</a>(QPainter *painter,
<a name="l00034"></a>00034 <span class="keyword">const</span> QStyleOptionViewItem &option,
<a name="l00035"></a>00035 <span class="keyword">const</span> QModelIndex &index)<span class="keyword"> const</span>
<a name="l00036"></a>00036 <span class="keyword"></span>{
<a name="l00037"></a>00037 <a class="code" href="class_status_event_item_delegate.html#ac42fa7c064f411bc234cbb9e8c10112e">QItemDelegate::paint</a>(painter, option, index);
<a name="l00038"></a>00038
<a name="l00039"></a>00039 painter->save();
<a name="l00040"></a>00040 <span class="keywordflow">if</span> (option.state & QStyle::State_Selected)
<a name="l00041"></a>00041 painter->setPen(option.palette.highlightedText().color());
<a name="l00042"></a>00042
<a name="l00043"></a>00043 QPixmap icon = index.data(<a class="code" href="class_status_event_item.html#a6ed2b03097a6b4bc1e56add5e7e04c26acde77cc12e5744c35a48b1ea93ce3c1d">StatusEventItem::IconRole</a>).value<QPixmap>();
<a name="l00044"></a>00044 QTime tstamp = index.data(<a class="code" href="class_status_event_item.html#a6ed2b03097a6b4bc1e56add5e7e04c26a7deeaa0a8e64df7a502dc5261232be5b">StatusEventItem::TimestampRole</a>).toTime();
<a name="l00045"></a>00045 QString title = index.data(<a class="code" href="class_status_event_item.html#a6ed2b03097a6b4bc1e56add5e7e04c26a47e45d12f9a667b16e478e448a51b790">StatusEventItem::TitleRole</a>).toString();
<a name="l00046"></a>00046 QString text = index.data(<a class="code" href="class_status_event_item.html#a6ed2b03097a6b4bc1e56add5e7e04c26ae110fce2d277b831bc13605644cf3d0c">StatusEventItem::DescriptionRole</a>).toString();
<a name="l00047"></a>00047 QFont font = option.font;
<a name="l00048"></a>00048 QFontMetrics fm = option.fontMetrics;
<a name="l00049"></a>00049
<a name="l00050"></a>00050 <span class="comment">/* XXX: Handle right-to-left layouts here. */</span>
<a name="l00051"></a>00051 QRect iconRect(option.rect.x(),
<a name="l00052"></a>00052 option.rect.y(),
<a name="l00053"></a>00053 qMax(fm.width(tstamp.toString()), icon.width()) + 16,
<a name="l00054"></a>00054 option.rect.height());
<a name="l00055"></a>00055 QRect textRect(iconRect.topRight(), option.rect.bottomRight());
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="comment">// Draw the status icon</span>
<a name="l00058"></a>00058 QPoint center = iconRect.center();
<a name="l00059"></a>00059 <span class="keywordtype">int</span> x = center.x() - qRound(icon.width() / 2.0);
<a name="l00060"></a>00060 <span class="keywordtype">int</span> y = center.y() - qRound((icon.height() + fm.lineSpacing()) / 2.0);
<a name="l00061"></a>00061 painter->drawPixmap(x, y, icon);
<a name="l00062"></a>00062
<a name="l00063"></a>00063 <span class="comment">// Draw the timestamp text underneath the status icon</span>
<a name="l00064"></a>00064 x = iconRect.x();
<a name="l00065"></a>00065 y = y + icon.height();
<a name="l00066"></a>00066 painter->drawText(x, y,
<a name="l00067"></a>00067 iconRect.width(),
<a name="l00068"></a>00068 fm.lineSpacing(),
<a name="l00069"></a>00069 Qt::AlignCenter,
<a name="l00070"></a>00070 tstamp.toString());
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="comment">// Draw the event's title in a bold font. If the current item has an</span>
<a name="l00073"></a>00073 <span class="comment">// associated help URL, draw the little "?" icon to the right of the</span>
<a name="l00074"></a>00074 <span class="comment">// title text</span>
<a name="l00075"></a>00075 font.setBold(<span class="keyword">true</span>);
<a name="l00076"></a>00076 painter->setFont(font);
<a name="l00077"></a>00077 <span class="keywordflow">if</span> (! index.data(<a class="code" href="class_status_event_item.html#a6ed2b03097a6b4bc1e56add5e7e04c26a88ced42352d45337ce4063479d3926cc">StatusEventItem::HelpUrlRole</a>).isNull()) {
<a name="l00078"></a>00078 <span class="comment">// Draw the little "?" icon in the corner of the list item and</span>
<a name="l00079"></a>00079 <span class="comment">// account for it when eliding the title</span>
<a name="l00080"></a>00080 title = fm.elidedText(title,
<a name="l00081"></a>00081 Qt::ElideRight,
<a name="l00082"></a>00082 textRect.width() - <a class="code" href="class_status_event_item_delegate.html#abd0807631bb84e8e087e884bf768fb29">_helpIcon</a>.width() - 24);
<a name="l00083"></a>00083
<a name="l00084"></a>00084 x = textRect.topRight().x() - <a class="code" href="class_status_event_item_delegate.html#abd0807631bb84e8e087e884bf768fb29">_helpIcon</a>.width() - 8;
<a name="l00085"></a>00085 y = textRect.y() + 8;
<a name="l00086"></a>00086 painter->drawPixmap(x, y, <a class="code" href="class_status_event_item_delegate.html#abd0807631bb84e8e087e884bf768fb29">_helpIcon</a>);
<a name="l00087"></a>00087 } <span class="keywordflow">else</span> {
<a name="l00088"></a>00088 title = fm.elidedText(title, Qt::ElideRight, textRect.width() - 16);
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090 painter->drawText(textRect.x(),
<a name="l00091"></a>00091 textRect.y() + 8,
<a name="l00092"></a>00092 textRect.width(),
<a name="l00093"></a>00093 fm.lineSpacing(),
<a name="l00094"></a>00094 Qt::AlignVCenter | Qt::AlignLeft, title);
<a name="l00095"></a>00095
<a name="l00096"></a>00096 <span class="comment">// Draw the rest of the event text, up to a maximum of 2 lines for</span>
<a name="l00097"></a>00097 <span class="comment">// unselected items or 5 lines for selected items. Any extra text will</span>
<a name="l00098"></a>00098 <span class="comment">// be elided.</span>
<a name="l00099"></a>00099 font.setBold(<span class="keyword">false</span>);
<a name="l00100"></a>00100 painter->setFont(font);
<a name="l00101"></a>00101 <span class="keywordflow">if</span> (option.state & QStyle::State_Selected)
<a name="l00102"></a>00102 text = <a class="code" href="class_status_event_item_delegate.html#a48a3940e194baaa9dbe9701db65fe085">layoutText</a>(text, font, textRect.width(), 6).join(<span class="stringliteral">"\n"</span>);
<a name="l00103"></a>00103 <span class="keywordflow">else</span>
<a name="l00104"></a>00104 text = <a class="code" href="class_status_event_item_delegate.html#a48a3940e194baaa9dbe9701db65fe085">layoutText</a>(text, font, textRect.width(), 3).join(<span class="stringliteral">"\n"</span>);
<a name="l00105"></a>00105
<a name="l00106"></a>00106 x = textRect.x();
<a name="l00107"></a>00107 y = textRect.y() + 8 + fm.leading() + fm.lineSpacing();
<a name="l00108"></a>00108 painter->drawText(x, y,
<a name="l00109"></a>00109 textRect.width(),
<a name="l00110"></a>00110 textRect.height() - (y - textRect.y()),
<a name="l00111"></a>00111 Qt::AlignTop | Qt::AlignLeft, text);
<a name="l00112"></a>00112
<a name="l00113"></a>00113 painter->restore();
<a name="l00114"></a>00114 }
<a name="l00115"></a>00115
<a name="l00116"></a>00116 QSize
<a name="l00117"></a><a class="code" href="class_status_event_item_delegate.html#a89527471b548bf7876f899de0772c890">00117</a> <a class="code" href="class_status_event_item_delegate.html#a89527471b548bf7876f899de0772c890">StatusEventItemDelegate::sizeHint</a>(<span class="keyword">const</span> QStyleOptionViewItem &option,
<a name="l00118"></a>00118 <span class="keyword">const</span> QModelIndex &index)<span class="keyword"> const</span>
<a name="l00119"></a>00119 <span class="keyword"></span>{
<a name="l00120"></a>00120 <span class="keywordtype">int</span> iconHeight, iconWidth;
<a name="l00121"></a>00121 <span class="keywordtype">int</span> textWidth, textHeight;
<a name="l00122"></a>00122 QFontMetrics fontMetrics = option.fontMetrics;
<a name="l00123"></a>00123
<a name="l00124"></a>00124 QPixmap icon = index.data(<a class="code" href="class_status_event_item.html#a6ed2b03097a6b4bc1e56add5e7e04c26acde77cc12e5744c35a48b1ea93ce3c1d">StatusEventItem::IconRole</a>).value<QPixmap>();
<a name="l00125"></a>00125 QString text = index.data(<a class="code" href="class_status_event_item.html#a6ed2b03097a6b4bc1e56add5e7e04c26ae110fce2d277b831bc13605644cf3d0c">StatusEventItem::DescriptionRole</a>).toString();
<a name="l00126"></a>00126 QTime tstamp = index.data(<a class="code" href="class_status_event_item.html#a6ed2b03097a6b4bc1e56add5e7e04c26a7deeaa0a8e64df7a502dc5261232be5b">StatusEventItem::TimestampRole</a>).toTime();
<a name="l00127"></a>00127
<a name="l00128"></a>00128 iconHeight = icon.height() + fontMetrics.lineSpacing() + 16;
<a name="l00129"></a>00129 iconWidth = qMax(fontMetrics.width(tstamp.toString()), icon.width()) + 16;
<a name="l00130"></a>00130 textWidth = option.rect.width() - iconWidth;
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keywordflow">if</span> (option.state & QStyle::State_Selected)
<a name="l00133"></a>00133 <a class="code" href="class_status_event_item_delegate.html#a48a3940e194baaa9dbe9701db65fe085">layoutText</a>(text, option.font, textWidth, 6, &textHeight);
<a name="l00134"></a>00134 <span class="keywordflow">else</span>
<a name="l00135"></a>00135 <a class="code" href="class_status_event_item_delegate.html#a48a3940e194baaa9dbe9701db65fe085">layoutText</a>(text, option.font, textWidth, 3, &textHeight);
<a name="l00136"></a>00136 textHeight += 8 + fontMetrics.leading() + fontMetrics.lineSpacing();
<a name="l00137"></a>00137
<a name="l00138"></a>00138 <span class="keywordflow">return</span> QSize(option.rect.width(), qMax(iconHeight, textHeight));
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140
<a name="l00141"></a>00141 QStringList
<a name="l00142"></a><a class="code" href="class_status_event_item_delegate.html#a48a3940e194baaa9dbe9701db65fe085">00142</a> <a class="code" href="class_status_event_item_delegate.html#a48a3940e194baaa9dbe9701db65fe085">StatusEventItemDelegate::layoutText</a>(<span class="keyword">const</span> QString &text,
<a name="l00143"></a>00143 <span class="keyword">const</span> QFont &font,
<a name="l00144"></a>00144 <span class="keywordtype">int</span> maxLineWidth,
<a name="l00145"></a>00145 <span class="keywordtype">int</span> maxLines,
<a name="l00146"></a>00146 <span class="keywordtype">int</span> *textHeight)
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 QTextLayout textLayout(text, font);
<a name="l00149"></a>00149 QFontMetrics fontMetrics(font);
<a name="l00150"></a>00150 QStringList lines;
<a name="l00151"></a>00151 qreal height = 0.0;
<a name="l00152"></a>00152
<a name="l00153"></a>00153 textLayout.beginLayout();
<a name="l00154"></a>00154 <span class="keywordflow">while</span> (lines.size() < maxLines) {
<a name="l00155"></a>00155 QTextLine line = textLayout.createLine();
<a name="l00156"></a>00156 <span class="keywordflow">if</span> (! line.isValid())
<a name="l00157"></a>00157 <span class="keywordflow">break</span>;
<a name="l00158"></a>00158 <span class="keywordflow">if</span> (maxLines <= 0 || lines.size() < maxLines-1) {
<a name="l00159"></a>00159 <span class="comment">// Wrap the current line at or below the maximum line width</span>
<a name="l00160"></a>00160 line.setLineWidth(maxLineWidth);
<a name="l00161"></a>00161 lines.append(text.mid(line.textStart(), line.textLength()));
<a name="l00162"></a>00162 } <span class="keywordflow">else</span> {
<a name="l00163"></a>00163 <span class="comment">// Set the line width beyond the max line width, and then elide it</span>
<a name="l00164"></a>00164 <span class="comment">// so the user has a visible indication that the full message is</span>
<a name="l00165"></a>00165 <span class="comment">// longer than what is visible.</span>
<a name="l00166"></a>00166 line.setLineWidth(2 * maxLineWidth);
<a name="l00167"></a>00167 lines.append(fontMetrics.elidedText(text.mid(line.textStart()),
<a name="l00168"></a>00168 Qt::ElideRight,
<a name="l00169"></a>00169 maxLineWidth));
<a name="l00170"></a>00170 }
<a name="l00171"></a>00171 height += fontMetrics.leading() + line.height();
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173 textLayout.endLayout();
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="keywordflow">if</span> (textHeight)
<a name="l00176"></a>00176 *textHeight = qRound(height);
<a name="l00177"></a>00177
<a name="l00178"></a>00178 <span class="keywordflow">return</span> lines;
<a name="l00179"></a>00179 }
<a name="l00180"></a>00180
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