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Fix Bug 287983 - Dolphin truncates tooltip information for long file names

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Use KStringHandler and QTextLayout to wrap the text (file name)
into the maximum width of the label "name".

Make use of QFontMetrics to calculate a font size aware tooltip size.

BUG: 287983
FIXED-IN: 4.11.3
REVIEW: 113101
This commit is contained in:
Emmanuel Pescosta 2013-11-02 00:12:33 +01:00
parent f55119945f
commit c2bf208fe6
1 changed files with 36 additions and 1 deletions
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37
src/views/tooltips/filemetadatatooltip.cpp
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@ -24,11 +24,15 @@
#include <KColorScheme>
#include <KSeparator>
#include <KWindowSystem>
#include <KStringHandler>
#include <QLabel>
#include <QStyleOptionFrame>
#include <QStylePainter>
#include <QVBoxLayout>
#include <QTextDocument>
#include <QTextLayout>
#include <QTextLine>
#ifndef HAVE_NEPOMUK
#include <KFileMetaDataWidget>
@ -56,10 +60,15 @@ FileMetaDataToolTip::FileMetaDataToolTip(QWidget* parent) :
m_name = new QLabel(this);
m_name->setForegroundRole(QPalette::ToolTipText);
m_name->setTextFormat(Qt::PlainText);
m_name->setAlignment(Qt::AlignHCenter);
QFont font = m_name->font();
font.setBold(true);
m_name->setFont(font);
QFontMetrics fontMetrics(font);
m_name->setMaximumWidth(fontMetrics.averageCharWidth() * 40);
// Create widget for the meta data
#ifndef HAVE_NEPOMUK
m_fileMetaDataWidget = new KFileMetaDataWidget(this);
@ -108,7 +117,33 @@ QPixmap FileMetaDataToolTip::preview() const
void FileMetaDataToolTip::setName(const QString& name)
{
m_name->setText(name);
QTextOption textOption;
textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
const QString processedName = Qt::mightBeRichText(name) ? name : KStringHandler::preProcessWrap(name);
QTextLayout textLayout(processedName);
textLayout.setFont(m_name->font());
textLayout.setTextOption(textOption);
QString wrappedText;
wrappedText.reserve(processedName.length());
// wrap the text to fit into the maximum width of m_name
textLayout.beginLayout();
QTextLine line = textLayout.createLine();
while (line.isValid()) {
line.setLineWidth(m_name->maximumWidth());
wrappedText += processedName.mid(line.textStart(), line.textLength());
line = textLayout.createLine();
if (line.isValid()) {
wrappedText += QChar::LineSeparator;
}
}
textLayout.endLayout();
m_name->setText(wrappedText);
}
QString FileMetaDataToolTip::name() const