bovo/gui/hintitem.cc

   1 /*******************************************************************
   2 *
   3 * This file is part of the KDE project "Bovo"
   4 *
   5 * Bovo is free software; you can redistribute it and/or modify
   6 * it under the terms of the GNU General Public License as published by
   7 * the Free Software Foundation; either version 2, or (at your option)
   8 * any later version.
   9 *
  10 * Bovo is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 *
  15 * You should have received a copy of the GNU General Public License
  16 * along with Bovo; see the file COPYING.  If not, write to
  17 * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  18 * Boston, MA 02110-1301, USA.
  19 *
  20 ********************************************************************/
  21
  22 #include "hintitem.h"
  23
  24 #include <QtCore/QTimer>
  25 #include <QtGui/QColor>
  26 #include <QtGui/QPainter>
  27 #include <QtSvg/QSvgRenderer>
  28
  29 #include "common.h"
  30 #include "coord.h"
  31 #include "move.h"
  32 #include "scene.h"
  33
  34 using namespace bovo;
  35
  36 namespace gui {
  37
  38 HintItem::HintItem(Scene* scene, const Move& hint, bool animate, qreal fill)
  39   : QGraphicsSvgItem(), m_scene(scene), m_row(hint.y()),
  40   m_col(hint.x()), m_fill(fill) {
  41     m_sizeShrink = 1.0/(qrand()%5+7.0);
  42     setElementId(QString(hint.player() == X ? "x%1" : "o%1")
  43             .arg(QString::number(qrand() % 5 + 1)));
  44     m_tick = 16;
  45     m_tickUp = true;
  46     m_ticker = 0;
  47     if (animate) {
  48         m_ticker = new QTimer(this);
  49         m_opacity = 0.0;
  50         connect(m_ticker, SIGNAL(timeout()), this, SLOT(tick()));
  51         m_ticker->start(30);
  52     } else {
  53         m_opacity = 0.4;
  54     }
  55
  56     setPos(m_scene->cellCenter(m_col, m_row));
  57 }
  58
  59 HintItem::~HintItem() {
  60     if (m_ticker) {
  61         disconnect(m_ticker, 0, this, 0);
  62         m_ticker->stop();
  63         m_ticker->deleteLater();
  64     }
  65 }
  66
  67 QRectF HintItem::boundingRect() const {
  68     qreal width = m_scene->squareSize();
  69     qreal height = width;
  70     qreal margin = (1.0-m_fill) * width / 2.0;
  71     return QRectF( -width / 2.0  + margin,
  72                 -height / 2.0 + margin,
  73                 width  - 2.0*margin,
  74                 height - 2.0*margin);
  75 }
  76
  77
  78 void HintItem::killAnimation() {
  79     if (m_ticker) {
  80         m_ticker->stop();
  81         disconnect(m_ticker, 0, this, 0);
  82         m_opacity = 0.4;
  83         update();
  84     }
  85 }
  86
  87 void HintItem::kill() {
  88     connect(m_ticker, SIGNAL(timeout()), this, SLOT(killTick()));
  89     m_ticker->start();
  90 }
  91
  92 void HintItem::killTick() {
  93     m_opacity -= 0.05;
  94     update();
  95     if (m_opacity <= 0.05) {
  96         m_ticker->stop();
  97         emit killed();
  98     }
  99 }
 100
 101 void HintItem::tick() {
 102     --m_tick;
 103     if (m_tick == 0) {
 104         killAnimation();
 105     } else {
 106         if (m_tickUp && m_tick > 5) {
 107             m_opacity += 0.1;
 108         } else if (m_tickUp) {
 109             m_opacity -= 0.1;
 110             m_tickUp = false;
 111         } else {
 112             m_opacity -= 0.1;
 113         }
 114         update();
 115     }
 116 }
 117
 118 // HintItem::setEnabled(enabled) {
 119 //     m_enabled = enabled;
 120 // }
 121
 122 void HintItem::paint(QPainter *p, const QStyleOptionGraphicsItem*, QWidget*) {
 123     p->setOpacity(m_opacity);
 124     renderer()->render(p, elementId(), boundingRect());
 125 }
 126
 127 void HintItem::setFill(qreal fill) {
 128     m_fill = fill;
 129 }
 130
 131 } /* namespace gui */
 132
 133 #include "hintitem.moc"