TDE base libraries and programs
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/* kasbar.cpp
**
** Copyright (C) 2001-2004 Richard Moore <rich@kde.org>
** Contributor: Mosfet
** All rights reserved.
**
** KasBar is dual-licensed: you can choose the GPL or the BSD license.
** Short forms of both licenses are included below.
*/
/*
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program in a file called COPYING; if not, write to
** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
** MA 02110-1301, USA.
*/
/*
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
** ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
** IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
** ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
** FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
** DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
** OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
** HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
** LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
** OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
** SUCH DAMAGE.
*/
/*
** Bug reports and questions can be sent to kde-devel@kde.org
*/
#include <math.h>
#include <tqbitmap.h>
#include <tqcursor.h>
#include <tqpainter.h>
#include <tqmemarray.h>
#include <tqtimer.h>
#include <tdeapplication.h>
#include <kdebug.h>
#include <krootpixmap.h>
#include <kpixmapio.h>
#include <kiconloader.h>
#include "kasitem.h"
#include "kasbar.h"
#include "kasbar.moc"
static const int SMALL_EXTENT = 36;
static const int MEDIUM_EXTENT = 52;
static const int LARGE_EXTENT = 68;
static const int HUGE_EXTENT = 84;
static const int ENORMOUS_EXTENT = 148;
KasBar::KasBar( Orientation o, TQWidget *parent, const char *name, WFlags f )
: TQWidget( parent, name, f ),
master_(0),
orient( o ),
direction_( o == Qt::Horizontal ? TQBoxLayout::LeftToRight : TQBoxLayout::TopToBottom ),
itemUnderMouse_( 0 ),
boxesPerLine_(10), // Temp value
inDrag( false ),
detached( false ),
maxBoxes_( 100 ), // Temp value
itemSize_( Medium ),
itemExtent_( MEDIUM_EXTENT ),
paintInactiveFrame_( true ),
transparent_( false ),
rootPix( 0 ),
enableTint_( false ),
tintAmount_( 0.1 ),
tintColour_( colorGroup().mid() ),
useMask_( true ),
res(0)
{
setBackgroundMode( NoBackground );
items.setAutoDelete( true );
setMouseTracking( true );
setMaxBoxes( 0 );
connect( this, TQT_SIGNAL( configChanged() ), TQT_SLOT( repaint() ) );
}
KasBar::KasBar( Orientation o, KasBar *master, TQWidget *parent, const char *name, WFlags f )
: TQWidget( parent, name, f ),
master_(master),
orient( o ),
direction_( o == Qt::Horizontal ? TQBoxLayout::LeftToRight : TQBoxLayout::TopToBottom ),
itemUnderMouse_( 0 ),
boxesPerLine_(10), // Temp value
inDrag( false ),
detached( false ),
maxBoxes_( 100 ), // Temp value
itemSize_( Medium ),
itemExtent_( MEDIUM_EXTENT ),
paintInactiveFrame_( true ),
transparent_( false ),
rootPix( 0 ),
enableTint_( false ),
tintAmount_( 0.1 ),
tintColour_( colorGroup().mid() ),
useMask_( true ),
res(0)
{
setBackgroundMode( NoBackground );
items.setAutoDelete( true );
setMouseTracking( true );
setMaxBoxes( 0 );
connect( master_, TQT_SIGNAL( configChanged() ), TQT_SLOT( repaint() ) );
}
KasBar::~KasBar()
{
delete res;
}
KasResources *KasBar::resources()
{
if ( res )
return res;
if ( isTopLevel() ) {
res = new KasResources( this );
connect( res, TQT_SIGNAL( changed() ), TQT_SIGNAL( configChanged() ) );
connect( this, TQT_SIGNAL( itemSizeChanged(int) ), res, TQT_SLOT( itemSizeChanged() ) );
return res;
}
return master_->resources();
}
KasBar *KasBar::createChildBar( Orientation o, TQWidget *parent, const char *name )
{
KasBar *child = new KasBar( o, this, parent, name );
child->rereadMaster();
return child;
}
void KasBar::setItemSize( int size )
{
switch( size ) {
case Small:
setItemExtent( SMALL_EXTENT );
break;
case Medium:
setItemExtent( MEDIUM_EXTENT );
break;
case Large:
setItemExtent( LARGE_EXTENT );
break;
case Huge:
setItemExtent( HUGE_EXTENT );
break;
case Enormous:
setItemExtent( ENORMOUS_EXTENT );
break;
default:
break;
}
}
void KasBar::setItemExtent( int size )
{
if ( size == itemExtent_ )
return;
itemExtent_ = size;
if ( size < MEDIUM_EXTENT )
itemSize_ = Small;
else if ( size < LARGE_EXTENT )
itemSize_ = Medium;
else if ( size < HUGE_EXTENT )
itemSize_ = Large;
else if ( size < ENORMOUS_EXTENT )
itemSize_ = Huge;
else
itemSize_ = Enormous;
emit itemSizeChanged( itemSize_ );
emit configChanged();
updateLayout();
}
void KasBar::setTransparent( bool enable )
{
if ( transparent_ == enable )
return;
transparent_ = enable;
if ( transparent_ ) {
kdDebug(1345) << "KasBar: Enabling transparency" << endl;
rootPix = new KRootPixmap( this );
connect( rootPix, TQT_SIGNAL( backgroundUpdated(const TQPixmap &) ),
this, TQT_SLOT( setBackground(const TQPixmap &) ) );
rootPix->setCustomPainting( true );
if ( enableTint_ )
rootPix->setFadeEffect( tintAmount_, tintColour_ );
rootPix->start();
}
else {
kdDebug(1345) << "KasBar: Disabling transparency" << endl;
rootPix->stop();
delete rootPix;
rootPix = 0;
}
emit configChanged();
}
void KasBar::setTint( bool enable )
{
if ( enableTint_ == enable )
return;
enableTint_ = enable;
if ( transparent_ && rootPix ) {
if ( enableTint_ ) {
rootPix->setFadeEffect( tintAmount_, tintColour_ );
}
else {
rootPix->setFadeEffect( 0.0, tintColour_ );
}
emit configChanged();
repaint( true );
}
}
void KasBar::setTint( double amount, TQColor color )
{
tintAmount_ = amount;
tintColour_ = color;
if ( transparent_ && enableTint_ ) {
rootPix->setFadeEffect( tintAmount_, tintColour_ );
emit configChanged();
if ( rootPix->isAvailable() )
rootPix->repaint( true );
}
}
void KasBar::setTintColor( const TQColor &c )
{
setTint( tintAmount_, c );
}
void KasBar::setTintAmount( int percent )
{
double amt = (double) percent / 100.0;
setTint( amt, tintColour_ );
}
void KasBar::setMaxBoxes( int count )
{
if ( count == maxBoxes_ )
return;
if ( count == 0 )
count = 15; // XXX Hacked
maxBoxes_ = count;
emit configChanged();
setBoxesPerLine( count );
}
void KasBar::setBoxesPerLine( int count )
{
boxesPerLine_ = TQMIN( count, maxBoxes_ );
updateLayout();
}
void KasBar::setDetachedPosition( const TQPoint &pos )
{
if ( detachedPos == pos )
return;
detachedPos = pos;
emit detachedPositionChanged( pos );
}
void KasBar::setDirection( Direction dir )
{
if ( direction_ == dir )
return;
if ( ( dir == TQBoxLayout::LeftToRight ) || ( dir == TQBoxLayout::RightToLeft ) )
orient = Qt::Horizontal;
else
orient = Qt::Vertical;
direction_ = dir;
emit directionChanged();
updateLayout();
}
void KasBar::setOrientation( Orientation o )
{
if ( orient == o )
return;
if ( o == Qt::Horizontal )
setDirection( TQBoxLayout::LeftToRight );
else
setDirection( TQBoxLayout::TopToBottom );
}
void KasBar::toggleOrientation()
{
switch( direction_ ) {
case TQBoxLayout::LeftToRight:
setDirection( TQBoxLayout::RightToLeft );
break;
case TQBoxLayout::RightToLeft:
setDirection( TQBoxLayout::TopToBottom );
break;
case TQBoxLayout::TopToBottom:
setDirection( TQBoxLayout::BottomToTop );
break;
case TQBoxLayout::BottomToTop:
setDirection( TQBoxLayout::LeftToRight );
break;
default:
kdWarning() << "toggleOrientation got an odd direction: " << (uint) direction_ << endl;
setDirection( TQBoxLayout::LeftToRight );
break;
}
}
void KasBar::toggleDetached()
{
setDetached( !detached );
}
void KasBar::setDetached( bool detach )
{
if ( detached == detach )
return;
detached = detach;
updateLayout();
emit detachedChanged( detached );
}
TQSize KasBar::sizeHint( Orientation o, TQSize sz )
{
if ( o == Qt::Horizontal )
setBoxesPerLine( sz.width() / itemExtent() );
else
setBoxesPerLine( sz.height() / itemExtent() );
unsigned int r=0, c=0;
if( items.count() > (unsigned int) boxesPerLine_ ) {
r = items.count()/boxesPerLine_;
c = boxesPerLine_;
}
else {
r = 1;
c = items.count();
}
if( r*c < items.count() ) // remainders
++r;
TQSize s;
if( o == Qt::Horizontal ) {
s.setWidth( c*itemExtent() );
s.setHeight( r*itemExtent() );
}
else {
s.setWidth( r*itemExtent() );
s.setHeight( c*itemExtent() );
}
return s;
}
void KasBar::updateLayout()
{
// kdDebug(1345) << "KasBar: updateLayout(), count is " << items.count() << endl;
if ( !isUpdatesEnabled() )
return;
bool updates = isUpdatesEnabled();
setUpdatesEnabled( false );
// This is for testing a rectangular layout
// boxesPerLine_ = (uint) ceil(sqrt( items.count() ));
// Work out the number of rows and columns
unsigned int r=0, c=0;
if( items.count() > (unsigned int) boxesPerLine_ ) {
r = items.count()/boxesPerLine_;
c = boxesPerLine_;
}
else{
r = 1;
c = items.count();
}
if( r*c < items.count() ) // remainders
++r;
TQSize sz;
if ( orient == Qt::Horizontal )
sz = TQSize( c * itemExtent(), r * itemExtent() );
else
sz = TQSize( r * itemExtent(), c * itemExtent() );
if ( sz != size() ) {
resize( sz );
}
setUpdatesEnabled( updates );
TQWidget *top = topLevelWidget();
TQRegion mask;
KasItem *i;
if ( orient == Qt::Horizontal ) {
for ( i = items.first(); i; i = items.next() ) {
int x = (items.at() % c) * itemExtent();
if ( direction_ == TQBoxLayout::RightToLeft )
x = width() - x - itemExtent();
i->setPos( x, (items.at() / c) * itemExtent() );
i->update();
mask = mask.unite( TQRegion( TQRect( i->pos(), TQSize(itemExtent(),itemExtent()) ) ) );
}
}
else {
for ( i = items.first(); i; i = items.next() ) {
int y = (items.at() / r) * itemExtent();
if ( direction_ == TQBoxLayout::BottomToTop )
y = height() - y - itemExtent();
i->setPos( (items.at() % r) * itemExtent(), y );
i->update();
mask = mask.unite( TQRegion( TQRect( i->pos(), TQSize(itemExtent(),itemExtent()) ) ) );
}
}
if ( useMask_ )
top->setMask( mask );
else
top->clearMask();
update();
}
void KasBar::rereadMaster()
{
if ( !master_ )
return;
setItemSize( master_->itemSize() );
setTint( master_->hasTint() );
setTintColor( master_->tintColor() );
setTintAmount( master_->tintAmount() );
}
void KasBar::append( KasItem *i )
{
if ( !i )
return;
items.append( i );
updateLayout();
}
void KasBar::insert( int index, KasItem *i )
{
if ( (!i) || (index < 0) )
return;
items.insert( index, i );
updateLayout();
}
void KasBar::remove( KasItem *i )
{
items.remove( i );
if ( i == itemUnderMouse_ )
itemUnderMouse_ = 0;
updateLayout();
}
void KasBar::clear()
{
items.clear();
itemUnderMouse_ = 0;
updateLayout();
}
void KasBar::mousePressEvent(TQMouseEvent *ev)
{
KasItem *i = itemAt( ev->pos() );
if ( i )
i->mousePressEvent( ev );
pressPos = ev->globalPos();
}
void KasBar::mouseReleaseEvent(TQMouseEvent *ev)
{
if ( !inDrag ) {
KasItem *i = itemAt( ev->pos() );
if ( i )
i->mouseReleaseEvent( ev );
}
else if ( detached ) {
setDetachedPosition( pos() );
emit configChanged();
}
pressPos = TQPoint();
inDrag = false;
}
void KasBar::updateMouseOver()
{
updateMouseOver( mapFromGlobal( TQCursor::pos() ) );
}
void KasBar::updateMouseOver( TQPoint pos )
{
KasItem *i = itemAt(pos);
if ( i == itemUnderMouse_ )
return;
if ( itemUnderMouse_ )
itemUnderMouse_->mouseLeave();
if ( i )
i->mouseEnter();
if ( i && itemUnderMouse_ )
itemUnderMouse_->hidePopup();
itemUnderMouse_ = i;
}
void KasBar::mouseMoveEvent(TQMouseEvent *ev)
{
if ( detached && (!pressPos.isNull()) ) {
TQPoint moved = ev->globalPos() - pressPos;
if ( !inDrag ) {
if ( moved.manhattanLength() > 6 ) {
inDrag = true;
emit dragStarted();
}
}
if ( inDrag ) {
if ( itemUnderMouse_ )
itemUnderMouse_->hidePopup();
move( pos() + moved );
pressPos = ev->globalPos();
}
}
else {
updateMouseOver( ev->pos() );
}
}
void KasBar::dragMoveEvent ( TQDragMoveEvent *ev )
{
KasItem *i = itemAt( ev->pos() );
if ( itemUnderMouse_ != i ) {
if ( itemUnderMouse_ )
itemUnderMouse_->dragLeave();
if ( i )
i->dragEnter();
itemUnderMouse_ = i;
}
}
void KasBar::paintEvent(TQPaintEvent *ev)
{
TQPainter q( this );
q.drawPixmap( ev->rect().topLeft(), offscreen, ev->rect() );
}
void KasBar::resizeEvent(TQResizeEvent *ev)
{
offscreen.resize( ev->size() );
TQPainter p( &offscreen );
paintBackground( &p, TQRect(TQPoint(0,0),size()) );
TQWidget::resizeEvent(ev);
emit layoutChanged();
}
TQPoint KasBar::itemPos( KasItem *i )
{
return i->pos();
}
void KasBar::updateItem( KasItem *i )
{
if ( !i )
return;
if ( !isShown() )
return;
TQPainter p( &offscreen );
TQPoint pos = i->pos();
paintBackground( &p, TQRect( pos, TQSize( itemExtent(), itemExtent() ) ) );
i->paint( &p, pos.x(), pos.y() );
update( TQRect( pos, TQSize( itemExtent(), itemExtent() ) ) );
}
void KasBar::repaintItem(KasItem *i, bool erase )
{
if ( !i )
return;
if ( !isShown() )
return;
TQPainter p( &offscreen );
TQPoint pos = i->pos();
paintBackground( &p, TQRect( pos, TQSize( itemExtent(), itemExtent() ) ) );
i->paint( &p, pos.x(), pos.y() );
repaint( TQRect( pos, TQSize( itemExtent(), itemExtent() ) ), transparent_ || erase );
}
KasItem* KasBar::itemAt(const TQPoint &p)
{
KasItem *i;
TQRect cr;
for (i = items.first(); i; i = items.next()) {
cr.setTopLeft( i->pos() );
cr.setSize( TQSize( itemExtent(), itemExtent() ) );
if(cr.contains(p))
return i;
}
return 0;
}
void KasBar::setBackground( const TQPixmap &newBg )
{
bg = newBg;
TQPainter p( &offscreen );
paintBackground( &p, TQRect(TQPoint(0,0),size()) );
updateLayout();
}
void KasBar::setMasked( bool mask )
{
if ( useMask_ == mask )
return;
useMask_ = mask;
}
void KasBar::setPaintInactiveFrames( bool enable )
{
paintInactiveFrame_ = enable;
update();
}
void KasBar::paintBackground( TQPainter *p, const TQRect &r )
{
// If we're transparent
if ( transparent_ ) {
if ( !bg.isNull() ) {
p->drawPixmap( r.topLeft(), bg, r );
return;
}
}
}
void KasBar::addTestItems()
{
KasItem *i = new KasItem( this );
insert( 0, i );
i->setText( "Animated" );
i->setIcon( TDEGlobal::iconLoader()->loadIcon( "icons", TDEIcon::NoGroup, TDEIcon::SizeMedium ) );
i->setAnimation( resources()->startupAnimation() );
TQTimer *aniTimer = new TQTimer( i, "aniTimer" );
connect( aniTimer, TQT_SIGNAL( timeout() ), i, TQT_SLOT( advanceAnimation() ) );
aniTimer->start( 100 );
i->setShowAnimation( true );
updateLayout();
}