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lxqt-panel-packaging/plugin-taskbar/lxqttaskbutton.cpp

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/* BEGIN_COMMON_COPYRIGHT_HEADER
* (c)LGPL2+
*
* LXDE-Qt - a lightweight, Qt based, desktop toolset
* http://razor-qt.org
* http://lxqt.org
*
* Copyright: 2011 Razor team
* 2014 LXQt team
* Authors:
* Alexander Sokoloff <sokoloff.a@gmail.com>
* Kuzma Shapran <kuzma.shapran@gmail.com>
*
* This program or library is free software; you can redistribute it
* and/or modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* END_COMMON_COPYRIGHT_HEADER */
#include "lxqttaskbutton.h"
#include "lxqttaskgroup.h"
#include "lxqttaskbar.h"
#include <LXQt/Settings>
#include <QDebug>
#include <XdgIcon>
#include <QTimer>
#include <QMenu>
#include <QAction>
#include <QContextMenuEvent>
#include <QPainter>
#include <QDrag>
#include <QMouseEvent>
#include <QMimeData>
#include <QApplication>
#include <QDragEnterEvent>
#include <QStylePainter>
#include <QStyleOptionToolButton>
#include <QDesktopWidget>
#include "lxqttaskbutton.h"
#include "lxqttaskgroup.h"
#include "lxqttaskbar.h"
#include <KWindowSystem/KWindowSystem>
// Necessary for closeApplication()
#include <KWindowSystem/NETWM>
#include <QX11Info>
bool LXQtTaskButton::sDraggging = false;
/************************************************
************************************************/
void LeftAlignedTextStyle::drawItemText(QPainter * painter, const QRect & rect, int flags
, const QPalette & pal, bool enabled, const QString & text
, QPalette::ColorRole textRole) const
{
QString txt = QFontMetrics(painter->font()).elidedText(text, Qt::ElideRight, rect.width());
return QProxyStyle::drawItemText(painter, rect, (flags & ~Qt::AlignHCenter) | Qt::AlignLeft, pal, enabled, txt, textRole);
}
/************************************************
************************************************/
LXQtTaskButton::LXQtTaskButton(const WId window, LXQtTaskBar * taskbar, QWidget *parent) :
QToolButton(parent),
mWindow(window),
mUrgencyHint(false),
mOrigin(Qt::TopLeftCorner),
mDrawPixmap(false),
mParentTaskBar(taskbar),
mPlugin(mParentTaskBar->plugin()),
mDNDTimer(new QTimer(this))
{
Q_ASSERT(taskbar);
setCheckable(true);
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
setMinimumWidth(1);
setMinimumHeight(1);
setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
setAcceptDrops(true);
updateText();
updateIcon();
mDNDTimer->setSingleShot(true);
mDNDTimer->setInterval(700);
connect(mDNDTimer, SIGNAL(timeout()), this, SLOT(activateWithDraggable()));
connect(LXQt::Settings::globalSettings(), SIGNAL(iconThemeChanged()), this, SLOT(updateIcon()));
connect(mParentTaskBar, &LXQtTaskBar::iconByClassChanged, this, &LXQtTaskButton::updateIcon);
}
/************************************************
************************************************/
LXQtTaskButton::~LXQtTaskButton()
{
}
/************************************************
************************************************/
void LXQtTaskButton::updateText()
{
KWindowInfo info(mWindow, NET::WMVisibleName | NET::WMName);
QString title = info.visibleName().isEmpty() ? info.name() : info.visibleName();
setText(title.replace("&", "&&"));
setToolTip(title);
}
/************************************************
************************************************/
void LXQtTaskButton::updateIcon()
{
QIcon ico;
if (mParentTaskBar->isIconByClass())
{
ico = XdgIcon::fromTheme(QString::fromUtf8(KWindowInfo{mWindow, 0, NET::WM2WindowClass}.windowClassClass()).toLower());
}
if (ico.isNull())
{
ico = KWindowSystem::icon(mWindow);
}
setIcon(ico.isNull() ? XdgIcon::defaultApplicationIcon() : ico);
}
/************************************************
************************************************/
void LXQtTaskButton::refreshIconGeometry(QRect const & geom)
{
NETWinInfo info(QX11Info::connection(),
windowId(),
(WId) QX11Info::appRootWindow(),
NET::WMIconGeometry,
0);
NETRect const curr = info.iconGeometry();
if (curr.pos.x != geom.x() || curr.pos.y != geom.y()
|| curr.size.width != geom.width() || curr.size.height != geom.height())
{
NETRect nrect;
nrect.pos.x = geom.x();
nrect.pos.y = geom.y();
nrect.size.height = geom.height();
nrect.size.width = geom.width();
info.setIconGeometry(nrect);
}
}
/************************************************
************************************************/
void LXQtTaskButton::dragEnterEvent(QDragEnterEvent *event)
{
// It must be here otherwise dragLeaveEvent and dragMoveEvent won't be called
// on the other hand drop and dragmove events of parent widget won't be called
event->acceptProposedAction();
if (event->mimeData()->hasFormat(mimeDataFormat()))
{
emit dragging(event->source(), event->pos());
setAttribute(Qt::WA_UnderMouse, false);
} else
{
mDNDTimer->start();
}
QToolButton::dragEnterEvent(event);
}
void LXQtTaskButton::dragMoveEvent(QDragMoveEvent * event)
{
if (event->mimeData()->hasFormat(mimeDataFormat()))
{
emit dragging(event->source(), event->pos());
setAttribute(Qt::WA_UnderMouse, false);
}
}
void LXQtTaskButton::dragLeaveEvent(QDragLeaveEvent *event)
{
mDNDTimer->stop();
QToolButton::dragLeaveEvent(event);
}
void LXQtTaskButton::dropEvent(QDropEvent *event)
{
mDNDTimer->stop();
if (event->mimeData()->hasFormat(mimeDataFormat()))
{
emit dropped(event->source(), event->pos());
setAttribute(Qt::WA_UnderMouse, false);
}
QToolButton::dropEvent(event);
}
/************************************************
************************************************/
void LXQtTaskButton::mousePressEvent(QMouseEvent* event)
{
const Qt::MouseButton b = event->button();
if (Qt::LeftButton == b)
mDragStartPosition = event->pos();
else if (Qt::MidButton == b && parentTaskBar()->closeOnMiddleClick())
closeApplication();
QToolButton::mousePressEvent(event);
}
/************************************************
************************************************/
void LXQtTaskButton::mouseReleaseEvent(QMouseEvent* event)
{
if (event->button() == Qt::LeftButton)
{
if (isChecked())
minimizeApplication();
else
raiseApplication();
}
QToolButton::mouseReleaseEvent(event);
}
/************************************************
************************************************/
QMimeData * LXQtTaskButton::mimeData()
{
QMimeData *mimedata = new QMimeData;
QByteArray ba;
QDataStream stream(&ba,QIODevice::WriteOnly);
stream << (qlonglong)(mWindow);
mimedata->setData(mimeDataFormat(), ba);
return mimedata;
}
/************************************************
************************************************/
void LXQtTaskButton::mouseMoveEvent(QMouseEvent* event)
{
if (!(event->buttons() & Qt::LeftButton))
return;
if ((event->pos() - mDragStartPosition).manhattanLength() < QApplication::startDragDistance())
return;
QDrag *drag = new QDrag(this);
drag->setMimeData(mimeData());
QIcon ico = icon();
QPixmap img = ico.pixmap(ico.actualSize({32, 32}));
drag->setPixmap(img);
switch (parentTaskBar()->panel()->position())
{
case ILXQtPanel::PositionLeft:
case ILXQtPanel::PositionTop:
drag->setHotSpot({0, 0});
break;
case ILXQtPanel::PositionRight:
case ILXQtPanel::PositionBottom:
drag->setHotSpot(img.rect().bottomRight());
break;
}
sDraggging = true;
drag->exec();
// if button is dropped out of panel (e.g. on desktop)
// it is not deleted automatically by Qt
drag->deleteLater();
sDraggging = false;
QAbstractButton::mouseMoveEvent(event);
}
/************************************************
************************************************/
bool LXQtTaskButton::isApplicationHidden() const
{
KWindowInfo info(mWindow, NET::WMState);
return (info.state() & NET::Hidden);
}
/************************************************
************************************************/
bool LXQtTaskButton::isApplicationActive() const
{
return KWindowSystem::activeWindow() == mWindow;
}
/************************************************
************************************************/
void LXQtTaskButton::activateWithDraggable()
{
// raise app in any time when there is a drag
// in progress to allow drop it into an app
raiseApplication();
KWindowSystem::forceActiveWindow(mWindow);
}
/************************************************
************************************************/
void LXQtTaskButton::raiseApplication()
{
KWindowInfo info(mWindow, NET::WMDesktop | NET::WMState | NET::XAWMState);
if (parentTaskBar()->raiseOnCurrentDesktop() && info.isMinimized())
{
KWindowSystem::setOnDesktop(mWindow, KWindowSystem::currentDesktop());
}
else
{
int winDesktop = info.desktop();
if (KWindowSystem::currentDesktop() != winDesktop)
KWindowSystem::setCurrentDesktop(winDesktop);
}
KWindowSystem::activateWindow(mWindow);
setUrgencyHint(false);
}
/************************************************
************************************************/
void LXQtTaskButton::minimizeApplication()
{
KWindowSystem::minimizeWindow(mWindow);
}
/************************************************
************************************************/
void LXQtTaskButton::maximizeApplication()
{
QAction* act = qobject_cast<QAction*>(sender());
if (!act)
return;
int state = act->data().toInt();
switch (state)
{
case NET::MaxHoriz:
KWindowSystem::setState(mWindow, NET::MaxHoriz);
break;
case NET::MaxVert:
KWindowSystem::setState(mWindow, NET::MaxVert);
break;
default:
KWindowSystem::setState(mWindow, NET::Max);
break;
}
if (!isApplicationActive())
raiseApplication();
}
/************************************************
************************************************/
void LXQtTaskButton::deMaximizeApplication()
{
KWindowSystem::clearState(mWindow, NET::Max);
if (!isApplicationActive())
raiseApplication();
}
/************************************************
************************************************/
void LXQtTaskButton::shadeApplication()
{
KWindowSystem::setState(mWindow, NET::Shaded);
}
/************************************************
************************************************/
void LXQtTaskButton::unShadeApplication()
{
KWindowSystem::clearState(mWindow, NET::Shaded);
}
/************************************************
************************************************/
void LXQtTaskButton::closeApplication()
{
// FIXME: Why there is no such thing in KWindowSystem??
NETRootInfo(QX11Info::connection(), NET::CloseWindow).closeWindowRequest(mWindow);
}
/************************************************
************************************************/
void LXQtTaskButton::setApplicationLayer()
{
QAction* act = qobject_cast<QAction*>(sender());
if (!act)
return;
int layer = act->data().toInt();
switch(layer)
{
case NET::KeepAbove:
KWindowSystem::clearState(mWindow, NET::KeepBelow);
KWindowSystem::setState(mWindow, NET::KeepAbove);
break;
case NET::KeepBelow:
KWindowSystem::clearState(mWindow, NET::KeepAbove);
KWindowSystem::setState(mWindow, NET::KeepBelow);
break;
default:
KWindowSystem::clearState(mWindow, NET::KeepBelow);
KWindowSystem::clearState(mWindow, NET::KeepAbove);
break;
}
}
/************************************************
************************************************/
void LXQtTaskButton::moveApplicationToDesktop()
{
QAction* act = qobject_cast<QAction*>(sender());
if (!act)
return;
bool ok;
int desk = act->data().toInt(&ok);
if (!ok)
return;
KWindowSystem::setOnDesktop(mWindow, desk);
}
/************************************************
************************************************/
void LXQtTaskButton::contextMenuEvent(QContextMenuEvent* event)
{
if (event->modifiers().testFlag(Qt::ControlModifier))
{
event->ignore();
return;
}
KWindowInfo info(mWindow, 0, NET::WM2AllowedActions);
unsigned long state = KWindowInfo(mWindow, NET::WMState).state();
QMenu * menu = new QMenu(tr("Application"));
menu->setAttribute(Qt::WA_DeleteOnClose);
QAction* a;
/* KDE menu *******
+ To &Desktop >
+ &All Desktops
+ ---
+ &1 Desktop 1
+ &2 Desktop 2
+ &To Current Desktop
&Move
Re&size
+ Mi&nimize
+ Ma&ximize
+ &Shade
Ad&vanced >
Keep &Above Others
Keep &Below Others
Fill screen
&Layer >
Always on &top
&Normal
Always on &bottom
---
+ &Close
*/
/********** Desktop menu **********/
int deskNum = KWindowSystem::numberOfDesktops();
if (deskNum > 1)
{
int winDesk = KWindowInfo(mWindow, NET::WMDesktop).desktop();
QMenu* deskMenu = menu->addMenu(tr("To &Desktop"));
a = deskMenu->addAction(tr("&All Desktops"));
a->setData(NET::OnAllDesktops);
a->setEnabled(winDesk != NET::OnAllDesktops);
connect(a, SIGNAL(triggered(bool)), this, SLOT(moveApplicationToDesktop()));
deskMenu->addSeparator();
for (int i = 0; i < deskNum; ++i)
{
a = deskMenu->addAction(tr("Desktop &%1").arg(i + 1));
a->setData(i + 1);
a->setEnabled(i + 1 != winDesk);
connect(a, SIGNAL(triggered(bool)), this, SLOT(moveApplicationToDesktop()));
}
int curDesk = KWindowSystem::currentDesktop();
a = menu->addAction(tr("&To Current Desktop"));
a->setData(curDesk);
a->setEnabled(curDesk != winDesk);
connect(a, SIGNAL(triggered(bool)), this, SLOT(moveApplicationToDesktop()));
}
/********** State menu **********/
menu->addSeparator();
a = menu->addAction(tr("Ma&ximize"));
a->setEnabled(info.actionSupported(NET::ActionMax) && (!(state & NET::Max) || (state & NET::Hidden)));
a->setData(NET::Max);
connect(a, SIGNAL(triggered(bool)), this, SLOT(maximizeApplication()));
if (event->modifiers() & Qt::ShiftModifier)
{
a = menu->addAction(tr("Maximize vertically"));
a->setEnabled(info.actionSupported(NET::ActionMaxVert) && !((state & NET::MaxVert) || (state & NET::Hidden)));
a->setData(NET::MaxVert);
connect(a, SIGNAL(triggered(bool)), this, SLOT(maximizeApplication()));
a = menu->addAction(tr("Maximize horizontally"));
a->setEnabled(info.actionSupported(NET::ActionMaxHoriz) && !((state & NET::MaxHoriz) || (state & NET::Hidden)));
a->setData(NET::MaxHoriz);
connect(a, SIGNAL(triggered(bool)), this, SLOT(maximizeApplication()));
}
a = menu->addAction(tr("&Restore"));
a->setEnabled((state & NET::Hidden) || (state & NET::Max) || (state & NET::MaxHoriz) || (state & NET::MaxVert));
connect(a, SIGNAL(triggered(bool)), this, SLOT(deMaximizeApplication()));
a = menu->addAction(tr("Mi&nimize"));
a->setEnabled(info.actionSupported(NET::ActionMinimize) && !(state & NET::Hidden));
connect(a, SIGNAL(triggered(bool)), this, SLOT(minimizeApplication()));
if (state & NET::Shaded)
{
a = menu->addAction(tr("Roll down"));
a->setEnabled(info.actionSupported(NET::ActionShade) && !(state & NET::Hidden));
connect(a, SIGNAL(triggered(bool)), this, SLOT(unShadeApplication()));
}
else
{
a = menu->addAction(tr("Roll up"));
a->setEnabled(info.actionSupported(NET::ActionShade) && !(state & NET::Hidden));
connect(a, SIGNAL(triggered(bool)), this, SLOT(shadeApplication()));
}
/********** Layer menu **********/
menu->addSeparator();
QMenu* layerMenu = menu->addMenu(tr("&Layer"));
a = layerMenu->addAction(tr("Always on &top"));
// FIXME: There is no info.actionSupported(NET::ActionKeepAbove)
a->setEnabled(!(state & NET::KeepAbove));
a->setData(NET::KeepAbove);
connect(a, SIGNAL(triggered(bool)), this, SLOT(setApplicationLayer()));
a = layerMenu->addAction(tr("&Normal"));
a->setEnabled((state & NET::KeepAbove) || (state & NET::KeepBelow));
// FIXME: There is no NET::KeepNormal, so passing 0
a->setData(0);
connect(a, SIGNAL(triggered(bool)), this, SLOT(setApplicationLayer()));
a = layerMenu->addAction(tr("Always on &bottom"));
// FIXME: There is no info.actionSupported(NET::ActionKeepBelow)
a->setEnabled(!(state & NET::KeepBelow));
a->setData(NET::KeepBelow);
connect(a, SIGNAL(triggered(bool)), this, SLOT(setApplicationLayer()));
/********** Kill menu **********/
menu->addSeparator();
a = menu->addAction(XdgIcon::fromTheme("process-stop"), tr("&Close"));
connect(a, SIGNAL(triggered(bool)), this, SLOT(closeApplication()));
menu->setGeometry(mParentTaskBar->panel()->calculatePopupWindowPos(mapToGlobal(event->pos()), menu->sizeHint()));
mPlugin->willShowWindow(menu);
menu->show();
}
/************************************************
************************************************/
void LXQtTaskButton::setUrgencyHint(bool set)
{
if (mUrgencyHint == set)
return;
if (!set)
KWindowSystem::demandAttention(mWindow, false);
mUrgencyHint = set;
setProperty("urgent", set);
style()->unpolish(this);
style()->polish(this);
update();
}
/************************************************
************************************************/
bool LXQtTaskButton::isOnDesktop(int desktop) const
{
return KWindowInfo(mWindow, NET::WMDesktop).isOnDesktop(desktop);
}
bool LXQtTaskButton::isOnCurrentScreen() const
{
return QApplication::desktop()->screenGeometry(parentTaskBar()).intersects(KWindowInfo(mWindow, NET::WMFrameExtents).frameGeometry());
}
bool LXQtTaskButton::isMinimized() const
{
return KWindowInfo(mWindow,NET::WMState | NET::XAWMState).isMinimized();
}
Qt::Corner LXQtTaskButton::origin() const
{
return mOrigin;
}
void LXQtTaskButton::setOrigin(Qt::Corner newOrigin)
{
if (mOrigin != newOrigin)
{
mOrigin = newOrigin;
update();
}
}
void LXQtTaskButton::setAutoRotation(bool value, ILXQtPanel::Position position)
{
if (value)
{
switch (position)
{
case ILXQtPanel::PositionTop:
case ILXQtPanel::PositionBottom:
setOrigin(Qt::TopLeftCorner);
break;
case ILXQtPanel::PositionLeft:
setOrigin(Qt::BottomLeftCorner);
break;
case ILXQtPanel::PositionRight:
setOrigin(Qt::TopRightCorner);
break;
}
}
else
setOrigin(Qt::TopLeftCorner);
}
void LXQtTaskButton::paintEvent(QPaintEvent *event)
{
if (mOrigin == Qt::TopLeftCorner)
{
QToolButton::paintEvent(event);
return;
}
QSize sz = size();
QSize adjSz = sz;
QTransform transform;
QPoint originPoint;
switch (mOrigin)
{
case Qt::TopLeftCorner:
transform.rotate(0.0);
originPoint = QPoint(0.0, 0.0);
break;
case Qt::TopRightCorner:
transform.rotate(90.0);
originPoint = QPoint(0.0, -sz.width());
adjSz.transpose();
break;
case Qt::BottomRightCorner:
transform.rotate(180.0);
originPoint = QPoint(-sz.width(), -sz.height());
break;
case Qt::BottomLeftCorner:
transform.rotate(270.0);
originPoint = QPoint(-sz.height(), 0.0);
adjSz.transpose();
break;
}
bool drawPixmapNextTime = false;
if (!mDrawPixmap)
{
mPixmap = QPixmap(adjSz);
mPixmap.fill(QColor(0, 0, 0, 0));
if (adjSz != sz)
resize(adjSz); // this causes paint event to be repeated - next time we'll paint the pixmap to the widget surface.
// copied from QToolButton::paintEvent {
QStylePainter painter(&mPixmap, this);
QStyleOptionToolButton opt;
initStyleOption(&opt);
painter.drawComplexControl(QStyle::CC_ToolButton, opt);
// }
if (adjSz != sz)
{
resize(sz);
drawPixmapNextTime = true;
}
else
mDrawPixmap = true; // transfer the pixmap to the widget now!
}
if (mDrawPixmap)
{
QPainter painter(this);
painter.setTransform(transform);
painter.drawPixmap(originPoint, mPixmap);
drawPixmapNextTime = false;
}
mDrawPixmap = drawPixmapNextTime;
}
bool LXQtTaskButton::hasDragAndDropHover() const
{
return mDNDTimer->isActive();
}
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