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transmission/qt/PathButton.cc
Mike Gelfand d7930984ef Adjust uncrustify config, reformat all but Mac client
There're places where manual intervention is still required as uncrustify
is not ideal (unfortunately), but at least one may rely on it to do the
right thing most of the time (e.g. when sending in a patch).

The style itself is quite different from what we had before but making it
uniform across all the codebase is the key. I also hope that it'll make the
code more readable (YMMV) and less sensitive to further changes.
2017-04-20 10:01:22 +03:00

190 lines
4.3 KiB
C++

/*
* This file Copyright (C) 2014-2015 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
*/
#include <QApplication>
#include <QDir>
#include <QFileDialog>
#include <QFileIconProvider>
#include <QFileInfo>
#include <QStyle>
#include <QStyleOptionToolButton>
#include <QStylePainter>
#include "PathButton.h"
#include "Utils.h"
PathButton::PathButton(QWidget* parent) :
QToolButton(parent),
myMode(DirectoryMode),
myTitle(),
myNameFilter(),
myPath()
{
setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed));
setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
setText(tr("(None)")); // for minimum width
updateAppearance();
connect(this, SIGNAL(clicked()), this, SLOT(onClicked()));
}
void PathButton::setMode(Mode mode)
{
if (myMode == mode)
{
return;
}
myMode = mode;
updateAppearance();
}
void PathButton::setTitle(const QString& title)
{
myTitle = title;
}
void PathButton::setNameFilter(const QString& nameFilter)
{
myNameFilter = nameFilter;
}
void PathButton::setPath(const QString& path)
{
if (myPath == path)
{
return;
}
myPath = QDir::toNativeSeparators(Utils::removeTrailingDirSeparator(path));
updateAppearance();
emit pathChanged(myPath);
}
const QString& PathButton::path() const
{
return myPath;
}
QSize PathButton::sizeHint() const
{
const QSize sh(QToolButton::sizeHint());
return QSize(qMin(sh.width(), 150), sh.height());
}
void PathButton::paintEvent(QPaintEvent* /*event*/)
{
QStylePainter painter(this);
QStyleOptionToolButton option;
initStyleOption(&option);
const QSize fakeContentSize(qMax(100, qApp->globalStrut().width()), qMax(100, qApp->globalStrut().height()));
const QSize fakeSizeHint = style()->sizeFromContents(QStyle::CT_ToolButton, &option, fakeContentSize, this);
int textWidth = width() - (fakeSizeHint.width() - fakeContentSize.width()) - iconSize().width() - 6;
if (popupMode() == MenuButtonPopup)
{
textWidth -= style()->pixelMetric(QStyle::PM_MenuButtonIndicator, &option, this);
}
const QFileInfo pathInfo(myPath);
option.text = myPath.isEmpty() ? tr("(None)") : (pathInfo.fileName().isEmpty() ? myPath : pathInfo.fileName());
option.text = fontMetrics().elidedText(option.text, Qt::ElideMiddle, textWidth);
painter.drawComplexControl(QStyle::CC_ToolButton, option);
}
void PathButton::onClicked()
{
QFileDialog* dialog = new QFileDialog(window(), effectiveTitle());
dialog->setFileMode(isDirMode() ? QFileDialog::Directory : QFileDialog::ExistingFile);
if (isDirMode())
{
dialog->setOption(QFileDialog::ShowDirsOnly);
}
if (!myNameFilter.isEmpty())
{
dialog->setNameFilter(myNameFilter);
}
const QFileInfo pathInfo(myPath);
if (!myPath.isEmpty() && pathInfo.exists())
{
if (pathInfo.isDir())
{
dialog->setDirectory(pathInfo.absoluteFilePath());
}
else
{
dialog->setDirectory(pathInfo.absolutePath());
dialog->selectFile(pathInfo.fileName());
}
}
connect(dialog, SIGNAL(fileSelected(QString)), this, SLOT(onFileSelected(QString)));
dialog->setAttribute(Qt::WA_DeleteOnClose);
dialog->open();
}
void PathButton::onFileSelected(const QString& path)
{
if (!path.isEmpty())
{
setPath(path);
}
}
void PathButton::updateAppearance()
{
const QFileInfo pathInfo(myPath);
const int iconSize(style()->pixelMetric(QStyle::PM_SmallIconSize));
const QFileIconProvider iconProvider;
QIcon icon;
if (!myPath.isEmpty() && pathInfo.exists())
{
icon = iconProvider.icon(myPath);
}
if (icon.isNull())
{
icon = iconProvider.icon(isDirMode() ? QFileIconProvider::Folder : QFileIconProvider::File);
}
setIconSize(QSize(iconSize, iconSize));
setIcon(icon);
setToolTip(myPath == text() ? QString() : myPath);
update();
}
bool PathButton::isDirMode() const
{
return myMode == DirectoryMode;
}
QString PathButton::effectiveTitle() const
{
if (!myTitle.isEmpty())
{
return myTitle;
}
return isDirMode() ? tr("Select Folder") : tr("Select File");
}