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/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 396 insertions, 0 deletions

diff --git a/kicker/libkicker/panner.cpp b/kicker/libkicker/panner.cpp
new file mode 100644
index 000000000..43dd67a41
--- /dev/null
+++ b/kicker/libkicker/panner.cpp
@@ -0,0 +1,396 @@
+/*****************************************************************
+
+Copyright (c) 1996-2000 the kicker authors. See file AUTHORS.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+******************************************************************/
+
+#include <qlayout.h>
+#include <qtooltip.h>
+#include <qtimer.h>
+#include <qpainter.h>
+#include <qstyle.h>
+
+#include <kglobal.h>
+#include <klocale.h>
+#include <kdebug.h>
+
+#include "simplebutton.h"
+#include "panner.h"
+#include "panner.moc"
+
+Panner::Panner( QWidget* parent, const char* name )
+    : QWidget( parent, name ),
+      _luSB(0),
+      _rdSB(0),
+      _cwidth(0), _cheight(0),
+      _cx(0), _cy(0)
+{
+    KGlobal::locale()->insertCatalogue("libkicker");
+    setBackgroundOrigin( AncestorOrigin );
+
+    _updateScrollButtonsTimer = new QTimer(this);
+    connect(_updateScrollButtonsTimer, SIGNAL(timeout()), this, SLOT(reallyUpdateScrollButtons()));
+
+    _clipper = new QWidget(this);
+    _clipper->setBackgroundOrigin(AncestorOrigin);
+    _clipper->installEventFilter( this );
+    _viewport = new QWidget(_clipper);
+    _viewport->setBackgroundOrigin(AncestorOrigin);
+    
+    // layout
+    _layout = new QBoxLayout(this, QBoxLayout::LeftToRight);
+    _layout->addWidget(_clipper, 1);
+    setOrientation(Horizontal);
+}
+
+Panner::~Panner() 
+{
+}
+
+void Panner::createScrollButtons()
+{
+    if (_luSB)
+    {
+        return;
+    }
+
+    // left/up scroll button
+    _luSB = new SimpleArrowButton(this);
+    _luSB->installEventFilter(this);
+    //_luSB->setAutoRepeat(true);
+    _luSB->setMinimumSize(12, 12);
+    _luSB->hide();
+    _layout->addWidget(_luSB);
+    connect(_luSB, SIGNAL(pressed()), SLOT(startScrollLeftUp()));
+    connect(_luSB, SIGNAL(released()), SLOT(stopScroll()));
+
+    // right/down scroll button
+    _rdSB = new SimpleArrowButton(this);
+    _rdSB->installEventFilter(this);
+    //_rdSB->setAutoRepeat(true);
+    _rdSB->setMinimumSize(12, 12);
+    _rdSB->hide();
+    _layout->addWidget(_rdSB);
+    connect(_rdSB, SIGNAL(pressed()), SLOT(startScrollRightDown()));
+    connect(_rdSB, SIGNAL(released()), SLOT(stopScroll()));
+
+    // set up the buttons
+    setupButtons();
+}
+
+void Panner::setupButtons()
+{
+    if (orientation() == Horizontal)
+    {
+        if (_luSB)
+        {
+            _luSB->setArrowType(Qt::LeftArrow);
+            _rdSB->setArrowType(Qt::RightArrow);
+            _luSB->setSizePolicy(QSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding));
+            _rdSB->setSizePolicy(QSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding));
+            QToolTip::add(_luSB, i18n("Scroll left"));
+            QToolTip::add(_rdSB, i18n("Scroll right"));
+            setMinimumSize(24, 0);
+        }
+        _layout->setDirection(QBoxLayout::LeftToRight);
+    }
+    else
+    {
+        if (_luSB)
+        {
+            _luSB->setArrowType(Qt::UpArrow);
+            _rdSB->setArrowType(Qt::DownArrow);
+            _luSB->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum));
+            _rdSB->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum));
+            QToolTip::add(_luSB, i18n("Scroll up"));
+            QToolTip::add(_rdSB, i18n("Scroll down"));
+            setMinimumSize(0, 24);
+        }
+        _layout->setDirection(QBoxLayout::TopToBottom);
+    }
+
+    if (isVisible())
+    {
+        // we need to manually redo the layout if we are visible
+        // otherwise let the toolkit decide when to do this
+        _layout->activate();
+    }
+}
+
+void Panner::setOrientation(Orientation o)
+{
+    _orient = o;
+    setupButtons();
+    reallyUpdateScrollButtons();
+}
+
+void Panner::resizeEvent( QResizeEvent* )
+{
+    //QScrollView::resizeEvent( e );
+    //updateScrollButtons();
+}
+
+void Panner::scrollRightDown()
+{
+    if(orientation() == Horizontal) // scroll right
+        scrollBy( _step, 0 );
+    else // scroll down
+        scrollBy( 0, _step );
+    if (_step < 64)
+    _step++;
+}
+
+void Panner::scrollLeftUp()
+{
+    if(orientation() == Horizontal) // scroll left
+        scrollBy( -_step, 0 );
+    else // scroll up
+        scrollBy( 0, -_step );
+    if (_step < 64)
+        _step++;
+}
+
+void Panner::startScrollRightDown()
+{
+    _scrollTimer = new QTimer(this);
+    connect(_scrollTimer, SIGNAL(timeout()), SLOT(scrollRightDown()));
+    _scrollTimer->start(50);
+    _step = 8;
+    scrollRightDown();
+}
+
+void Panner::startScrollLeftUp()
+{
+    _scrollTimer = new QTimer(this);
+    connect(_scrollTimer, SIGNAL(timeout()), SLOT(scrollLeftUp()));
+    _scrollTimer->start(50);
+    _step = 8;
+    scrollLeftUp();
+}
+
+void Panner::stopScroll()
+{
+    delete _scrollTimer;
+    _scrollTimer = 0;
+}
+
+void Panner::reallyUpdateScrollButtons()
+{
+    int delta = 0;
+    
+    _updateScrollButtonsTimer->stop();
+
+    if (orientation() == Horizontal)
+    {
+        delta = contentsWidth() - width();
+    }
+    else
+    {
+        delta = contentsHeight() - height();
+    }
+
+    if (delta >= 1)
+    {
+        createScrollButtons();
+
+        // since the buttons may be visible but of the wrong size
+        // we need to do this every single time
+        _luSB->show();
+        _rdSB->show();
+    }
+    else if (_luSB && _luSB->isVisibleTo(this))
+    {
+        _luSB->hide();
+        _rdSB->hide();
+    }
+}
+
+void Panner::updateScrollButtons()
+{
+    _updateScrollButtonsTimer->start(200, true);
+}
+
+void Panner::setContentsPos(int x, int y)
+{
+    if (x < 0)
+        x = 0;
+    else if (x > (contentsWidth() - visibleWidth()))
+        x = contentsWidth() - visibleWidth();
+    
+    if (y < 0)
+        y = 0;
+    else if (y > (contentsHeight() - visibleHeight()))
+        y = contentsHeight() - visibleHeight();
+        
+    if (x == contentsX() && y == contentsY())
+        return;
+        
+    _viewport->move(-x, -y);
+    emit contentsMoving(x, y);
+}
+
+void Panner::scrollBy(int dx, int dy)
+{
+    setContentsPos(contentsX() + dx, contentsY() + dy);
+}
+
+void Panner::resizeContents( int w, int h )
+{
+    _viewport->resize(w, h);
+    setContentsPos(contentsX(), contentsY());
+    updateScrollButtons();
+}
+
+QPoint Panner::contentsToViewport( const QPoint& p ) const
+{
+    return QPoint(p.x() - contentsX() - _clipper->x(), p.y() - contentsY() - _clipper->y());
+}
+
+QPoint Panner::viewportToContents( const QPoint& vp ) const
+{
+    return QPoint(vp.x() + contentsX() + _clipper->x(), vp.y() + contentsY() + _clipper->y());
+}
+
+void Panner::contentsToViewport( int x, int y, int& vx, int& vy ) const
+{
+    const QPoint v = contentsToViewport(QPoint(x,y));
+    vx = v.x();
+    vy = v.y();
+}
+
+void Panner::viewportToContents( int vx, int vy, int& x, int& y ) const
+{
+    const QPoint c = viewportToContents(QPoint(vx,vy));
+    x = c.x();
+    y = c.y();
+}
+
+void Panner::ensureVisible( int x, int y )
+{
+    ensureVisible(x, y, 50, 50);
+}
+
+void Panner::ensureVisible( int x, int y, int xmargin, int ymargin )
+{
+    int pw=visibleWidth();
+    int ph=visibleHeight();
+
+    int cx=-contentsX();
+    int cy=-contentsY();
+    int cw=contentsWidth();
+    int ch=contentsHeight();
+
+    if ( pw < xmargin*2 )
+        xmargin=pw/2;
+    if ( ph < ymargin*2 )
+        ymargin=ph/2;
+
+    if ( cw <= pw ) {
+        xmargin=0;
+        cx=0;
+    }
+    if ( ch <= ph ) {
+        ymargin=0;
+        cy=0;
+    }
+
+    if ( x < -cx+xmargin )
+        cx = -x+xmargin;
+    else if ( x >= -cx+pw-xmargin )
+        cx = -x+pw-xmargin;
+
+    if ( y < -cy+ymargin )
+        cy = -y+ymargin;
+    else if ( y >= -cy+ph-ymargin )
+        cy = -y+ph-ymargin;
+
+    if ( cx > 0 )
+        cx=0;
+    else if ( cx < pw-cw && cw>pw )
+        cx=pw-cw;
+
+    if ( cy > 0 )
+        cy=0;
+    else if ( cy < ph-ch && ch>ph )
+        cy=ph-ch;
+
+    setContentsPos( -cx, -cy );
+}
+
+bool Panner::eventFilter( QObject *obj, QEvent *e )
+{
+    if ( obj == _viewport || obj == _clipper ) 
+    {
+        switch ( e->type() ) 
+        {
+            case QEvent::Resize:
+                viewportResizeEvent((QResizeEvent *)e);
+                break;
+            case QEvent::MouseButtonPress:
+                viewportMousePressEvent( (QMouseEvent*)e );
+                if ( ((QMouseEvent*)e)->isAccepted() )
+                    return true;
+                break;
+            case QEvent::MouseButtonRelease:
+                viewportMouseReleaseEvent( (QMouseEvent*)e );
+                if ( ((QMouseEvent*)e)->isAccepted() )
+                    return true;
+                break;
+            case QEvent::MouseButtonDblClick:
+                viewportMouseDoubleClickEvent( (QMouseEvent*)e );
+                if ( ((QMouseEvent*)e)->isAccepted() )
+                    return true;
+                break;
+            case QEvent::MouseMove:
+                viewportMouseMoveEvent( (QMouseEvent*)e );
+                if ( ((QMouseEvent*)e)->isAccepted() )
+                    return true;
+                break;
+            default:
+                break;
+        }
+    }
+    
+    return QWidget::eventFilter( obj, e );  // always continue with standard event processing
+}
+
+void Panner::viewportResizeEvent( QResizeEvent* )
+{
+}
+
+void Panner::viewportMousePressEvent( QMouseEvent* e)
+{
+    e->ignore();
+}
+
+void Panner::viewportMouseReleaseEvent( QMouseEvent* e )
+{
+    e->ignore();
+}
+
+void Panner::viewportMouseDoubleClickEvent( QMouseEvent* e )
+{
+    e->ignore();
+}
+
+void Panner::viewportMouseMoveEvent( QMouseEvent* e )
+{
+    e->ignore();
+}