Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 390 insertions, 0 deletions

diff --git a/kmdi/kmditaskbar.cpp b/kmdi/kmditaskbar.cpp
new file mode 100644
index 000000000..2b86c0c85
--- /dev/null
+++ b/kmdi/kmditaskbar.cpp
@@ -0,0 +1,390 @@
+//----------------------------------------------------------------------------
+//    filename             : kmditaskbar.cpp
+//----------------------------------------------------------------------------
+//    Project              : KDE MDI extension
+//
+//    begin                : 07/1999       by Szymon Stefanek as part of kvirc
+//                                         (an IRC application)
+//    changes              : 09/1999       by Falk Brettschneider to create an
+//                           - 06/2000     stand-alone Qt extension set of
+//                                         classes and a Qt-based library
+//                           2000-2003     maintained by the KDevelop project
+//    patches              : 02/2000       by Massimo Morin (mmorin@schedsys.com)
+//
+//    copyright            : (C) 1999-2003 by Szymon Stefanek (stefanek@tin.it)
+//                                         and
+//                                         Falk Brettschneider
+//    email                :  falkbr@kdevelop.org (Falk Brettschneider)
+//----------------------------------------------------------------------------
+//
+//----------------------------------------------------------------------------
+//
+//    This program is free software; you can redistribute it and/or modify
+//    it under the terms of the GNU Library General Public License as
+//    published by the Free Software Foundation; either version 2 of the
+//    License, or (at your option) any later version.
+//
+//----------------------------------------------------------------------------
+
+#include "kmditaskbar.h"
+#include "kmditaskbar.moc"
+
+#include "kmdimainfrm.h"
+#include "kmdichildview.h"
+#include "kmdidefines.h"
+
+#include <qtooltip.h>
+#include <qlabel.h>
+#include <qwidget.h>
+#include <qstyle.h>
+
+#include <qnamespace.h>
+
+/*
+   @quickhelp: KMdiTaskBar
+   @widget: Taskbar
+      This window lists the currently open windows.<br>
+      Each button corresponds to a single MDI (child) window.<br>
+      The button is enabled (clickable) when the window is docked , and can be
+      pressed to bring it to the top of the other docked windows.<br>
+      The button text becomes red when new output is shown in the window and it is not the active one.<br>
+*/
+
+//####################################################################
+//
+// KMdiTaskBarButton
+//
+//####################################################################
+KMdiTaskBarButton::KMdiTaskBarButton( KMdiTaskBar *pTaskBar, KMdiChildView *win_ptr )
+		: QPushButton( pTaskBar ),
+		m_actualText( "" )
+{
+	setToggleButton( true );
+	m_pWindow = win_ptr;
+	QToolTip::add
+		( this, win_ptr->caption() );
+	setFocusPolicy( NoFocus );
+}
+
+KMdiTaskBarButton::~KMdiTaskBarButton()
+{}
+
+void KMdiTaskBarButton::mousePressEvent( QMouseEvent* e )
+{
+	switch ( e->button() )
+	{
+	case QMouseEvent::LeftButton:
+		emit leftMouseButtonClicked( m_pWindow );
+		break;
+	case QMouseEvent::RightButton:
+		emit rightMouseButtonClicked( m_pWindow );
+		break;
+	default:
+		break;
+	}
+	emit clicked( m_pWindow );
+}
+
+/** slot version of setText */
+void KMdiTaskBarButton::setNewText( const QString& s )
+{
+	setText( s );
+	emit buttonTextChanged( 0 );
+}
+
+void KMdiTaskBarButton::setText( const QString& s )
+{
+	m_actualText = s;
+	QButton::setText( s );
+}
+
+void KMdiTaskBarButton::fitText( const QString& origStr, int newWidth )
+{
+	QButton::setText( m_actualText );
+
+	int actualWidth = sizeHint().width();
+	int realLetterCount = origStr.length();
+	int newLetterCount = ( newWidth * realLetterCount ) / actualWidth;
+	int w = newWidth + 1;
+	QString s = origStr;
+	while ( ( w > newWidth ) && ( newLetterCount >= 1 ) )
+	{
+		if ( newLetterCount < realLetterCount )
+		{
+			if ( newLetterCount > 3 )
+				s = origStr.left( newLetterCount / 2 ) + "..." + origStr.right( newLetterCount / 2 );
+			else
+			{
+				if ( newLetterCount > 1 )
+					s = origStr.left( newLetterCount ) + "..";
+				else
+					s = origStr.left( 1 );
+			}
+		}
+		QFontMetrics fm = fontMetrics();
+		w = fm.width( s );
+		newLetterCount--;
+	}
+
+	QButton::setText( s );
+}
+
+QString KMdiTaskBarButton::actualText() const
+{
+	return m_actualText;
+}
+
+//####################################################################
+//
+// KMdiTaskBar
+//
+//####################################################################
+
+KMdiTaskBar::KMdiTaskBar( KMdiMainFrm *parent, QMainWindow::ToolBarDock dock )
+		: KToolBar( parent, "KMdiTaskBar",  /*honor_style*/ false,  /*readConfig*/ true )
+		, m_pCurrentFocusedWindow( 0 )
+		, m_pStretchSpace( 0 )
+		, m_layoutIsPending( false )
+		, m_bSwitchedOn( false )
+{
+	m_pFrm = parent;
+	m_pButtonList = new QPtrList<KMdiTaskBarButton>;
+	m_pButtonList->setAutoDelete( true );
+	//QT30   setFontPropagation(QWidget::SameFont);
+	setMinimumWidth( 1 );
+	setFocusPolicy( NoFocus );
+	parent->moveToolBar( this, dock ); //XXX obsolete!
+}
+
+KMdiTaskBar::~KMdiTaskBar()
+{
+	delete m_pButtonList;
+}
+
+KMdiTaskBarButton * KMdiTaskBar::addWinButton( KMdiChildView *win_ptr )
+{
+	if ( m_pStretchSpace )
+	{
+		delete m_pStretchSpace;
+		m_pStretchSpace = 0L;
+		setStretchableWidget( 0L );
+	}
+
+	KMdiTaskBarButton *b = new KMdiTaskBarButton( this, win_ptr );
+	QObject::connect( b, SIGNAL( clicked() ), win_ptr, SLOT( setFocus() ) );
+	QObject::connect( b, SIGNAL( clicked( KMdiChildView* ) ), this, SLOT( setActiveButton( KMdiChildView* ) ) );
+	QObject::connect( b, SIGNAL( leftMouseButtonClicked( KMdiChildView* ) ), m_pFrm, SLOT( activateView( KMdiChildView* ) ) );
+	QObject::connect( b, SIGNAL( rightMouseButtonClicked( KMdiChildView* ) ), m_pFrm, SLOT( taskbarButtonRightClicked( KMdiChildView* ) ) );
+	QObject::connect( b, SIGNAL( buttonTextChanged( int ) ), this, SLOT( layoutTaskBar( int ) ) );
+	m_pButtonList->append( b );
+	b->setToggleButton( true );
+	b->setText( win_ptr->tabCaption() );
+
+	layoutTaskBar();
+
+	m_pStretchSpace = new QLabel( this, "empty" );
+	m_pStretchSpace->setText( "" );
+	setStretchableWidget( m_pStretchSpace );
+	m_pStretchSpace->show();
+
+	if ( m_bSwitchedOn )
+	{
+		b->show();
+		show();
+	}
+	return b;
+}
+
+void KMdiTaskBar::removeWinButton( KMdiChildView *win_ptr, bool haveToLayoutTaskBar )
+{
+	KMdiTaskBarButton * b = getButton( win_ptr );
+	if ( b )
+	{
+		m_pButtonList->removeRef( b );
+		if ( haveToLayoutTaskBar )
+			layoutTaskBar();
+	}
+	if ( m_pButtonList->count() == 0 )
+	{
+		if ( m_pStretchSpace != 0L )
+		{
+			delete m_pStretchSpace;
+			m_pStretchSpace = 0L;
+			hide();
+		}
+	}
+}
+
+void KMdiTaskBar::switchOn( bool bOn )
+{
+	m_bSwitchedOn = bOn;
+	if ( !bOn )
+	{
+		hide();
+	}
+	else
+	{
+		if ( m_pButtonList->count() > 0 )
+		{
+			show();
+		}
+		else
+		{
+			hide();
+		}
+	}
+}
+
+KMdiTaskBarButton * KMdiTaskBar::getButton( KMdiChildView *win_ptr )
+{
+	for ( KMdiTaskBarButton * b = m_pButtonList->first();b;b = m_pButtonList->next() )
+	{
+		if ( b->m_pWindow == win_ptr )
+			return b;
+	}
+	return 0;
+}
+
+KMdiTaskBarButton * KMdiTaskBar::getNextWindowButton( bool bRight, KMdiChildView *win_ptr )
+{
+	if ( bRight )
+	{
+		for ( KMdiTaskBarButton * b = m_pButtonList->first();b;b = m_pButtonList->next() )
+		{
+			if ( b->m_pWindow == win_ptr )
+			{
+				b = m_pButtonList->next();
+				if ( !b )
+					b = m_pButtonList->first();
+				if ( win_ptr != b->m_pWindow )
+					return b;
+				else
+					return 0;
+			}
+		}
+	}
+	else
+	{
+		for ( KMdiTaskBarButton * b = m_pButtonList->first();b;b = m_pButtonList->next() )
+		{
+			if ( b->m_pWindow == win_ptr )
+			{
+				b = m_pButtonList->prev();
+				if ( !b )
+					b = m_pButtonList->last();
+				if ( win_ptr != b->m_pWindow )
+					return b;
+				else
+					return 0;
+			}
+		}
+	}
+	return 0;
+}
+
+void KMdiTaskBar::setActiveButton( KMdiChildView *win_ptr )
+{
+	KMdiTaskBarButton * newPressedButton = 0L;
+	KMdiTaskBarButton* oldPressedButton = 0L;
+	for ( KMdiTaskBarButton * b = m_pButtonList->first();b;b = m_pButtonList->next() )
+	{
+		if ( b->m_pWindow == win_ptr )
+			newPressedButton = b;
+		if ( b->m_pWindow == m_pCurrentFocusedWindow )
+			oldPressedButton = b;
+	}
+
+	if ( newPressedButton != 0L && newPressedButton != oldPressedButton )
+	{
+		if ( oldPressedButton != 0L )
+			oldPressedButton->toggle(); // switch off
+		newPressedButton->toggle();   // switch on
+		m_pCurrentFocusedWindow = win_ptr;
+	}
+}
+
+void KMdiTaskBar::layoutTaskBar( int taskBarWidth )
+{
+	if ( m_layoutIsPending )
+		return ;
+	m_layoutIsPending = true;
+
+	if ( !taskBarWidth )
+		// no width is given
+		taskBarWidth = width();
+
+	// calculate current width of all taskbar buttons
+	int allButtonsWidth = 0;
+	KMdiTaskBarButton *b = 0;
+	for ( b = m_pButtonList->first();b;b = m_pButtonList->next() )
+	{
+		allButtonsWidth += b->width();
+	}
+
+	// calculate actual width of all taskbar buttons
+	int allButtonsWidthHint = 0;
+	for ( b = m_pButtonList->first();b;b = m_pButtonList->next() )
+	{
+		QFontMetrics fm = b->fontMetrics();
+		QString s = b->actualText();
+		QSize sz = fm.size( ShowPrefix, s );
+		int w = sz.width() + 6;
+		int h = sz.height() + sz.height() / 8 + 10;
+		w += h;
+		allButtonsWidthHint += w;
+	}
+
+	// if there's enough space, use actual width
+	int buttonCount = m_pButtonList->count();
+	int tbHandlePixel;
+	tbHandlePixel = style().pixelMetric( QStyle::PM_DockWindowHandleExtent, this );
+	int buttonAreaWidth = taskBarWidth - tbHandlePixel - style().pixelMetric( QStyle::PM_DefaultFrameWidth, this ) - 5;
+	if ( ( ( allButtonsWidthHint ) <= buttonAreaWidth ) || ( width() < parentWidget() ->width() ) )
+	{
+		for ( b = m_pButtonList->first();b;b = m_pButtonList->next() )
+		{
+			b->setText( b->actualText() );
+			if ( b->width() != b->sizeHint().width() )
+			{
+				b->setFixedWidth( b->sizeHint().width() );
+				b->show();
+			}
+		}
+	}
+	else
+	{
+		// too many buttons for actual width
+		int newButtonWidth;
+		if ( buttonCount != 0 )
+			newButtonWidth = buttonAreaWidth / buttonCount;
+		else
+			newButtonWidth = 0;
+		if ( orientation() == Qt::Vertical )
+			newButtonWidth = 80;
+		if ( newButtonWidth > 0 )
+			for ( b = m_pButtonList->first();b;b = m_pButtonList->next() )
+			{
+				b->fitText( b->actualText(), newButtonWidth );
+				if ( b->width() != newButtonWidth )
+				{
+					b->setFixedWidth( newButtonWidth );
+					b->show();
+				}
+			}
+	}
+	m_layoutIsPending = false;
+}
+
+void KMdiTaskBar::resizeEvent( QResizeEvent* rse )
+{
+	if ( !m_layoutIsPending )
+	{
+		if ( m_pButtonList->count() != 0 )
+		{
+			layoutTaskBar( rse->size().width() );
+		}
+	}
+	KToolBar::resizeEvent( rse );
+}
+
+// kate: space-indent off; tab-width 4; replace-tabs off; indent-mode csands;