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List:       kde-devel
Subject:    Kicker/Taskbar: Mouseover effect
From:       Stefan Nikolaus <stefan.nikolaus () kdemail ! net>
Date:       2005-04-16 16:14:46
Message-ID: 200504161814.46904.stefan.nikolaus () kdemail ! net
[Download RAW message or body]

Hi,

if we already have that nifty mouse over effect, why not use them for the task 
buttons? Attached a patch which displays the effect. It shows the (full) 
title, the app's icon and the desktop the task is on.

Comments?

Bye,
Stefan

["taskbar-mouseover-1.patch" (text/x-diff)]

Index: taskcontainer.cpp
===================================================================
RCS file: /home/kde/kdebase/kicker/taskbar/taskcontainer.cpp,v
retrieving revision 1.116
diff -u -p -b -r1.116 taskcontainer.cpp
--- taskcontainer.cpp	15 Apr 2005 23:38:01 -0000	1.116
+++ taskcontainer.cpp	16 Apr 2005 16:11:24 -0000
@@ -26,6 +26,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE 
 
 #include <qbitmap.h>
 #include <qcolor.h>
+#include <qcursor.h>
 #include <qimage.h>
 #include <qpainter.h>
 #include <qpixmap.h>
@@ -41,6 +42,9 @@ CONNECTION WITH THE SOFTWARE OR THE USE 
 #include <kiconloader.h>
 #include <kimageeffect.h>
 
+#include "global.h"
+#include "kickerSettings.h"
+#include "kickertip.h"
 #include "taskmanager.h"
 #include "taskbarsettings.h"
 #include "tasklmbmenu.h"
@@ -162,18 +166,6 @@ void TaskContainer::iconChanged()
     QToolButton::update();
 }
 
-void TaskContainer::update()
-{
-    QString tooltip = "<qt>" + QStyleSheet::escape(name()) + "</qt>";
-    if (QToolTip::textFor(this) != tooltip)
-    {
-        QToolTip::remove(this);
-        QToolTip::add(this, tooltip);
-    }
-
-    QToolButton::update();
-}
-
 void TaskContainer::setLastActivated()
 {
     for ( Task* t = m_filteredTasks.first(); t ; t = m_filteredTasks.next() )
@@ -738,6 +730,8 @@ void TaskContainer::mousePressEvent( QMo
         return;
     }
 
+    KickerTip::the()->untipFor(this);
+
     if (e->button() == LeftButton)
     {
         m_dragStartPos = e->pos();
@@ -1118,6 +1112,60 @@ void TaskContainer::dragLeaveEvent( QDra
     QToolButton::dragLeaveEvent( e );
 }
 
+void TaskContainer::enterEvent(QEvent* e)
+{
+    QToolTip::remove(this);
+
+    if (!KickerSettings::showMouseOverEffects())
+    {
+        QString tooltip = "<qt>" + QStyleSheet::escape(name()) + "</qt>";
+        QToolTip::add(this, tooltip);
+        QToolButton::enterEvent(e);
+        return;
+    }
+
+    if (!KickerTip::tippingEnabled())
+    {
+        QToolButton::enterEvent(e);
+        return;
+    }
+
+    if (!mouseGrabber() &&
+         !QApplication::activePopupWidget() &&
+         !KickerTip::the()->isTippingFor(this))
+    {
+        KickerTip::the()->tipFor(this);
+
+        if (KickerTip::the()->isVisible())
+        {
+            showMouseOver();
+        }
+        else
+        {
+            // delay if it isn't shown to avoid false starts
+            // e.g. when the user quickly zooms their mouse over
+            // a button then out of kicker
+            QTimer::singleShot(250, this, SLOT(showMouseOver()));
+        }
+
+        return;
+    }
+
+    QToolButton::enterEvent(e);
+}
+
+void TaskContainer::leaveEvent(QEvent* e)
+{
+    if (KickerTip::tippingEnabled() &&
+        KickerTip::the()->isTippingFor(this) &&
+        KickerTip::the()->isVisible())
+    {
+        QTimer::singleShot(200, this, SLOT(hideMouseOver()));
+    }
+
+    QToolButton::leaveEvent(e);
+}
+
 void TaskContainer::dragSwitch()
 {
     if ( m_filteredTasks.count() < 1 )
@@ -1274,3 +1322,55 @@ void TaskContainer::settingsChanged()
     updateFilteredTaskList();
     update();
 }
+
+void TaskContainer::showMouseOver()
+{
+    if (!KickerTip::the()->isTippingFor(this))
+    {
+        return;
+    }
+
+    if (!rect().contains(mapFromGlobal(QCursor::pos())))
+    {
+        KickerTip::the()->untipFor(this);
+        return;
+    }
+
+    //try to guess the icon from the classhint
+    QPixmap pixmap = KGlobal::iconLoader()->loadIcon(sid.lower(),
+                                                     KIcon::Panel,
+                                                     KIcon::SizeHuge,
+                                                     KIcon::DefaultState,
+                                                     0, true);
+
+    // try to load icon via net_wm
+    if (pixmap.isNull())
+    {
+        pixmap = KWin::icon(tasks.first()->window(),
+                            KIcon::SizeHuge,
+                            KIcon::SizeHuge,
+                            true);
+    }
+
+    // Collect all desktops the tasks are on. Sort naturally.
+    QMap<int, QString> desktopMap;
+    for (Task *t = m_filteredTasks.first(); t; t = m_filteredTasks.next())
+    {
+        desktopMap.insert(t->desktop(),
+                          TaskManager::the()->desktopName(t->desktop()));
+    }
+    QStringList desktopNames = desktopMap.values();
+
+    KickerTip::the()->display(this->name(), desktopNames.join( ", " ), pixmap);
+
+    QPoint p = KickerLib::popupPosition(KPanelApplet::Up,
+                                        KickerTip::the(),
+                                        this);
+    KickerTip::the()->move(p);
+    KickerTip::the()->show();
+}
+
+void TaskContainer::hideMouseOver()
+{
+    KickerTip::the()->untipFor(this);
+}
Index: taskcontainer.h
===================================================================
RCS file: /home/kde/kdebase/kicker/taskbar/taskcontainer.h,v
retrieving revision 1.42
diff -u -p -b -r1.42 taskcontainer.h
--- taskcontainer.h	15 Apr 2005 23:38:01 -0000	1.42
+++ taskcontainer.h	16 Apr 2005 16:11:24 -0000
@@ -86,6 +86,8 @@ protected:
     void mouseMoveEvent(QMouseEvent*);
     void dragEnterEvent(QDragEnterEvent*);
     void dragLeaveEvent(QDragLeaveEvent*);
+    void enterEvent(QEvent*);
+    void leaveEvent(QEvent*);
     bool startDrag(const QPoint& pos);
     void stopTimers();
 
@@ -100,11 +102,12 @@ protected slots:
     void attentionTimerFired();
     void slotClicked();
     void dragSwitch();
-    void update();
     void iconChanged();
     void setLastActivated();
     void taskChanged();
     void showMe();
+    void showMouseOver();
+    void hideMouseOver();
 
 private:
     void checkAttention( const Task* changed_task = NULL );


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