From 4aed2c8219774f5d797760606b8489a92ddc5163 Mon Sep 17 00:00:00 2001 From: toma Date: Wed, 25 Nov 2009 17:56:58 +0000 Subject: 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 --- kicker/libkicker/panner.cpp | 396 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 396 insertions(+) create mode 100644 kicker/libkicker/panner.cpp (limited to 'kicker/libkicker/panner.cpp') 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 +#include +#include +#include +#include + +#include +#include +#include + +#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(); +} -- cgit v1.2.1