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-rw-r--r--kalzium/src/kalziumtip.cpp306
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diff --git a/kalzium/src/kalziumtip.cpp b/kalzium/src/kalziumtip.cpp
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+/***************************************************************************
+ * Copyright (C) 2005 by Zack Rusin <zrusin@kde.org> *
+ * Sami Kyostil <skyostil@kempele.fi> *
+ * Aaron J. Seigo <aseigo@kde.org> *
+ * Martin Pfeiffer <hubipete@gmx.net> *
+ * *
+ * 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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