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    40 ****************************************************************************/

    41 

    42 #include "BrowserWindow.h"

    43 

    44 #include <QtCore>

    45 #include <QtGui>

    46 #include <QPropertyAnimation>

    47 #include <QResizeEvent>

    48 

    49 #include "BrowserView.h"

    50 #include "HomeView.h"

    51 

    52 BrowserWindow::BrowserWindow()

    53     : m_slidingSurface(new QWidget(this))

    54     , m_homeView(new HomeView(m_slidingSurface))

    55     , m_browserView(new BrowserView(m_slidingSurface))

    56     , m_animation(new QPropertyAnimation(this, "slideValue"))

    57 {

    58     m_slidingSurface->setAutoFillBackground(true);

    59 

    60     m_homeView->resize(size());

    61 

    62     m_browserView->resize(size());

    63 

    64     connect(m_homeView, SIGNAL(addressEntered(QString)), SLOT(gotoAddress(QString)));

    65     connect(m_homeView, SIGNAL(urlActivated(QUrl)), SLOT(navigate(QUrl)));

    66 

    67     connect(m_browserView, SIGNAL(menuButtonClicked()), SLOT(showHomeView()));

    68 

    69     m_animation->setDuration(200);

    70     connect(m_animation, SIGNAL(finished()), SLOT(animationFinished()));

    71 

    72     setSlideValue(0.0f);

    73 }

    74 

    75 void BrowserWindow::gotoAddress(const QString &address)

    76 {

    77     m_browserView->navigate(QUrl::fromUserInput(address));

    78     showBrowserView();

    79 }

    80 

    81 void BrowserWindow::animationFinished()

    82 {

    83     m_animation->setDirection(QAbstractAnimation::Forward);

    84 }

    85 

    86 void BrowserWindow::navigate(const QUrl &url)

    87 {

    88     m_browserView->navigate(url);

    89     showBrowserView();

    90 }

    91 

    92 void BrowserWindow::setSlideValue(qreal slideRatio)

    93 {

    94     // we use a ratio to handle resize corectly

    95     const int pos = -qRound(slideRatio * width());

    96     m_slidingSurface->scroll(pos - m_homeView->x(), 0);

    97 

    98     if (qFuzzyCompare(slideRatio, static_cast<qreal>(1.0f))) {

    99         m_browserView->show();

   100         m_homeView->hide();

   101     } else if (qFuzzyCompare(slideRatio, static_cast<qreal>(0.0f))) {

   102         m_homeView->show();

   103         m_browserView->hide();

   104     } else {

   105         m_browserView->show();

   106         m_homeView->show();

   107     }

   108 }

   109 

   110 qreal BrowserWindow::slideValue() const

   111 {

   112     Q_ASSERT(m_slidingSurface->x() < width());

   113     return static_cast<qreal>(qAbs(m_homeView->x())) / width();

   114 }

   115 

   116 void BrowserWindow::showHomeView()

   117 {

   118     m_animation->setStartValue(slideValue());

   119     m_animation->setEndValue(0.0f);

   120     m_animation->start();

   121     m_homeView->setFocus();

   122 }

   123 

   124 void BrowserWindow::showBrowserView()

   125 {

   126     m_animation->setStartValue(slideValue());

   127     m_animation->setEndValue(1.0f);

   128     m_animation->start();

   129 

   130     m_browserView->setFocus();

   131 }

   132 

   133 void BrowserWindow::keyReleaseEvent(QKeyEvent *event)

   134 {

   135     QWidget::keyReleaseEvent(event);

   136 

   137     if (event->key() == Qt::Key_F3) {

   138         if (m_animation->state() == QAbstractAnimation::Running) {

   139             const QAbstractAnimation::Direction direction =  m_animation->direction() == QAbstractAnimation::Forward

   140                                                              ? QAbstractAnimation::Forward

   141                                                                  : QAbstractAnimation::Backward;

   142             m_animation->setDirection(direction);

   143         } else if (qFuzzyCompare(slideValue(), static_cast<qreal>(1.0f)))

   144             showHomeView();

   145         else

   146             showBrowserView();

   147         event->accept();

   148     }

   149 }

   150 

   151 void BrowserWindow::resizeEvent(QResizeEvent *event)

   152 {

   153     const QSize oldSize = event->oldSize();

   154     const qreal oldSlidingRatio = static_cast<qreal>(qAbs(m_homeView->x())) / oldSize.width();

   155 

   156     const QSize newSize = event->size();

   157     m_slidingSurface->resize(newSize.width() * 2, newSize.height());

   158 

   159     m_homeView->resize(newSize);

   160     m_homeView->move(0, 0);

   161 

   162     m_browserView->resize(newSize);

   163     m_browserView->move(newSize.width(), 0);

   164 

   165     setSlideValue(oldSlidingRatio);

   166 }