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/***************************************************************************
* Copyright (C) 2005 by Zack Rusin <[email protected]> *
* Sami Kyostil <[email protected]> *
* Aaron J. Seigo <[email protected]> *
* Martin Pfeiffer <[email protected]> *
* *
* 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; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#include "kalziumtip.h"
#include "kalziumutils.h"
#include "element.h"
#include <qapplication.h>
#include <qpixmap.h>
#include <qimage.h>
#include <qsimplerichtext.h>
#include <qpainter.h>
#include <qdesktopwidget.h>
#include <kdialog.h>
#include <kdebug.h>
#include <kglobal.h>
#include <kiconloader.h>
#include <klocale.h>
#include <kstandarddirs.h>
KalziumTip::KalziumTip( QWidget * parent, const char * name, WFlags f ) : QWidget( parent, name, f )
{
setFocusPolicy(NoFocus); //the widget don't get the keyboard focus
setBackgroundMode(NoBackground); // widget has no background
resize(0,0);
hide(); //initailly hide it
m_richText = 0;
m_noElemIcon = KGlobal::iconLoader()->loadIcon( "orbits", KIcon::NoGroup, 64 );
setMouseTracking(true); // receice mouse move events
connect(&m_frameTimer, SIGNAL(timeout()), SLOT(internalUpdate()));
}
void KalziumTip::showTip( QPoint mouse, Element* element, int visibleWidth, int visibleHeight )
{
QWidget *p = 0;
if ( dynamic_cast<QWidget*>( parent() ) )
p = static_cast<QWidget*>( parent() );
if ( p )
{
if ( mouse.y() + size().height() > visibleHeight )
mouse.setY( mouse.y() - size().height() );
if ( mouse.x() + size().width() > visibleWidth )
mouse.setX( mouse.x() - size().width() );
if ( p->width() < visibleWidth )
{
if ( mouse.x() + size().width() > p->width() )
mouse.setX( mouse.x() - size().width() );
}
if ( p->height() < visibleHeight )
{
if ( mouse.y() + size().height() > p->height() )
mouse.setY( mouse.y() - size().height() );
}
}
m_mousePointer = mouse;
if( element == m_tippedElement )
{
// Avoid moving out of the current screen
if (m_mousePointer.x()+width() > qApp->desktop()->width())
m_mousePointer.setX(qApp->desktop()->width() - width());
move(m_mousePointer); //do not paint again if already painted
}
else
{
if ( element == 0)
return;
m_tippedElement = element;
loadIcon(); //load icon
display();
}
}
void KalziumTip::paintEvent(QPaintEvent* e)
{
if (m_dirty)
{
displayInternal();
m_dirty = false;
}
QPainter p(this);
p.drawPixmap(e->rect().topLeft(), m_pixmap, e->rect());
}
void KalziumTip::mouseMoveEvent(QMouseEvent * e)
{
// delegate the mouse move event to the parent (actually the elements table)
// so that this tooltip doesn't stop to be updated
e->ignore();
}
void KalziumTip::display()
{
if( !m_tippedElement )
return;
delete m_richText;
QString elementname = m_tippedElement->elname();
QString number = i18n( "Number: %1" )
.arg( QString::number(m_tippedElement->number()) );
QString mass = i18n( "Mass: %1" )
.arg( KalziumUtils::localizedValue(m_tippedElement->mass(), 6) );
m_richText = new QSimpleRichText("<qt><h1>" + elementname + "</h1><p>"
+ number + "</p><p>"
+ mass +"</p></qt>", font());
m_richText->setWidth(400);
m_maskEffect = isVisible() ? Plain : Dissolve;
m_dissolveSize = 24;
m_dissolveDelta = -1;
displayInternal();
m_frameTimer.start(500/30);
move(m_mousePointer);
show();
}
void KalziumTip::displayInternal()
{
if (!m_richText)
return;
// determine text rectangel sizes
QRect textRect(0,0,0,0);
textRect.setWidth(m_richText->widthUsed());
textRect.setHeight(m_richText->height());
//moves the rect
textRect.moveBy(-textRect.left(), -textRect.top());
// add the new coordinates
textRect.addCoords(0,0,2,2);
int margin = KDialog::marginHint();
int height = QMAX(m_icon.height(), textRect.height()) + 2 * margin;
int textX = 2 + m_icon.width() + 2 * margin;
int width = textX + textRect.width() + margin;
int textY = (height - textRect.height()) / 2;
//resize pixmap, mask and widget
m_mask.resize(width, height);
m_pixmap.resize(width, height);
resize(width, height);
// create and set transparency mask
switch(m_maskEffect)
{
case Plain:
plainMask();
break;
case Dissolve:
dissolveMask();
break;
}
// draw background
QPainter bufferPainter(&m_pixmap);
bufferPainter.setPen(Qt::black);
bufferPainter.setBrush(backgroundColor());
bufferPainter.drawRoundRect(0, 0, width, height,
1600 / width, 1600 / height);
// draw icon if present
if (!m_icon.isNull())
{
bufferPainter.drawPixmap(margin,
margin,
m_icon, 0, 0,
m_icon.width(), m_icon.height());
}
// draw text shadow
QColorGroup cg = colorGroup();
cg.setColor(QColorGroup::Text, cg.background().dark(115));
int shadowOffset = QApplication::reverseLayout() ? -1 : 1;
m_richText->draw(&bufferPainter, 5 + textX + shadowOffset, textY + 1, QRect(), cg);
// draw text
cg = colorGroup();
m_richText->draw(&bufferPainter, 5 + textX, textY, rect(), cg);
}
void KalziumTip::dissolveMask()
{
QPainter maskPainter(&m_mask);
m_mask.fill(Qt::black);
maskPainter.setBrush(Qt::white);
maskPainter.setPen(Qt::white);
maskPainter.drawRoundRect(m_mask.rect(), 1600 / m_mask.rect().width(),
1600 / m_mask.rect().height());
m_dissolveSize += m_dissolveDelta;
if (m_dissolveSize > 0)
{
maskPainter.setRasterOp(Qt::EraseROP);
int x, y, s;
const int size = 16;
const int heightsize = size + height();
for (y = 0; y < heightsize; y += size)
{
x = width();
s = m_dissolveSize * x / 128;
for (; x > -size; x -= size, s -= 2)
{
if (s < 0)
{
s = 0;
}
maskPainter.drawEllipse(x - s / 2, y - s / 2, s, s);
}
}
}
else if (m_dissolveSize < 0)
{
m_frameTimer.stop();
m_dissolveDelta = 1;
}
setMask(m_mask);
}
void KalziumTip::hide()
{
m_frameTimer.stop();
m_tippedElement = 0;
QWidget::hide();
}
void KalziumTip::plainMask()
{
QPainter maskPainter(&m_mask);
m_mask.fill(Qt::black);
maskPainter.setBrush(Qt::white);
maskPainter.setPen(Qt::white);
maskPainter.drawRoundRect(m_mask.rect(), 1600 / m_mask.rect().width(),
1600 / m_mask.rect().height());
setMask(m_mask);
m_frameTimer.stop();
}
void KalziumTip::internalUpdate()
{
m_dirty = true;
update();
}
void KalziumTip::loadIcon()
{
QString iconpath = locate( "data" , "kalzium/elempics/" + m_tippedElement->symbol() + ".jpg" );
if ( !iconpath.isEmpty() )
{
QImage img ( iconpath, "JPEG" );
img = img.smoothScale ( 128, 128, QImage::ScaleMin );
m_icon.convertFromImage( img );
}
else
{
m_icon = m_noElemIcon;
}
}
#include "kalziumtip.moc"
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