QtSlideWindow.cc 13.1 KB
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/*===========================================================================*\
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*                                                                            *
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 *                              OpenFlipper                                   *
 *      Copyright (C) 2001-2011 by Computer Graphics Group, RWTH Aachen       *
 *                           www.openflipper.org                              *
 *                                                                            *
 *--------------------------------------------------------------------------- *
 *  This file is part of OpenFlipper.                                         *
 *                                                                            *
 *  OpenFlipper is free software: you can redistribute it and/or modify       *
 *  it under the terms of the GNU Lesser General Public License as            *
 *  published by the Free Software Foundation, either version 3 of            *
 *  the License, or (at your option) any later version with the               *
 *  following exceptions:                                                     *
 *                                                                            *
 *  If other files instantiate templates or use macros                        *
 *  or inline functions from this file, or you compile this file and          *
 *  link it with other files to produce an executable, this file does         *
 *  not by itself cause the resulting executable to be covered by the         *
 *  GNU Lesser General Public License. This exception does not however        *
 *  invalidate any other reasons why the executable file might be             *
 *  covered by the GNU Lesser General Public License.                         *
 *                                                                            *
 *  OpenFlipper 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 Lesser General Public License for more details.                       *
 *                                                                            *
 *  You should have received a copy of the GNU LesserGeneral Public           *
 *  License along with OpenFlipper. If not,                                   *
 *  see <http://www.gnu.org/licenses/>.                                       *
 *                                                                            *
 \*===========================================================================*/
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/*===========================================================================*\
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*                                                                            *
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 *   $Revision$                                                       *
 *   $LastChangedBy$                                                *
 *   $Date$                     *
 *                                                                            *
 \*===========================================================================*/
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//=============================================================================
//
//  CLASS QtSlideWindow
//
//=============================================================================


//== GLOBAL DEFINITIONS=========================================================

#define BACKGROUND_RED   0xff
#define BACKGROUND_GREEN 0xff
#define BACKGROUND_BLUE  0xff
#define BACKGROUND_ALPHA 0xcf

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#define SLIDE_DURATION 400
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//== INCLUDES =================================================================


#include <OpenFlipper/common/GlobalOptions.hh>

#include <QPainter>
#include <QGraphicsSceneMouseEvent>
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QDialog>
#include <QVBoxLayout>

#include "QtSlideWindow.hh"
#include "QtGraphicsButton.hh"

//== IMPLEMENTATION ==========================================================

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QtSlideWindow::QtSlideWindow(QString _name, QGraphicsItem *_parent) :
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    QGraphicsProxyWidget(_parent),
    name_(_name),
    mainWidget_(0),
    autohideButton_(0),
    detachButton_(0),
    dialog_(0),
    down_(false),
    animating_(false) {

    setCacheMode(QGraphicsItem::DeviceCoordinateCache);
    setWindowFrameMargins(2, 15, 2, 2);
    setZValue(2.0);

    QImage autohide(OpenFlipper::Options::iconDirStr() + OpenFlipper::Options::dirSeparator() + "button-autohide.png");
    QImage detach(OpenFlipper::Options::iconDirStr() + OpenFlipper::Options::dirSeparator() + "button-detach.png");

    autohideButton_ = new QtGraphicsButton(autohide, this, 12, 12);
    detachButton_ = new QtGraphicsButton(detach, this, 12, 12);

    autohideButton_->setCheckable(true);
    autohideButton_->setChecked(true);
    autohideButton_->setPos(geometry().width() - 12, -13);
    detachButton_->setPos(geometry().width() - 25, -13);

    connect(detachButton_, SIGNAL(pressed()), this, SLOT(detachPressed()));
    connect(autohideButton_, SIGNAL(pressed()), this, SLOT(autohidePressed()));

    // Create animation object
    animation_ = new QPropertyAnimation(this, "pos");
    animation_->setDuration(300); // 300 ms animation
    connect(animation_, SIGNAL(finished()), this, SLOT(animationFinished()));

    // Hide widget
    hide();

    setAcceptsHoverEvents(true);

    updateParentGeometry();
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}

//-----------------------------------------------------------------------------

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void QtSlideWindow::attachWidget(QWidget *_m) {
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    if (!_m)
        return;
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    mainWidget_ = _m;
    mainWidget_->setParent(0);
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    if (autohideButton_->isChecked()) {
        setWidget(mainWidget_);
        setWindowFlags(Qt::Window | Qt::CustomizeWindowHint | Qt::WindowTitleHint);

        down_ = true;
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        show();
    }
    updateGeometry();
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}

//-----------------------------------------------------------------------------
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void QtSlideWindow::detachWidget() {

    setWidget(0);
    hide();

    if (mainWidget_) {
        mainWidget_->setParent(0);
        mainWidget_ = 0;
    }

    if (dialog_) {
        disconnect (dialog_, SIGNAL(finished (int)), this, SLOT(dialogClosed ()));
        dialog_->close();
        delete dialog_;
        dialog_ = 0;
    }
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}

//-----------------------------------------------------------------------------

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void QtSlideWindow::paintWindowFrame(QPainter *_painter, const QStyleOptionGraphicsItem* /*_option*/, QWidget* /*_widget*/) {
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    int w = geometry().width();
    int h = geometry().height();
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    _painter->setRenderHint(QPainter::Antialiasing, true);
    _painter->setBrush(QBrush(QColor(BACKGROUND_RED, BACKGROUND_GREEN, BACKGROUND_BLUE, BACKGROUND_ALPHA)));
    _painter->setPen(QColor(BACKGROUND_RED / 4, BACKGROUND_GREEN / 4, BACKGROUND_BLUE / 4, BACKGROUND_ALPHA));
    _painter->drawRoundedRect(-2, -15, w + 4, h + 40, 4, 4);
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    _painter->setPen(Qt::SolidLine);
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    _painter->drawText(2, -13, w - 4, 11, Qt::AlignCenter, name_);
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}

//-----------------------------------------------------------------------------

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bool QtSlideWindow::windowFrameEvent(QEvent *_e) {

    if(_e->type() == QEvent::GraphicsSceneMousePress || _e->type() == QEvent::GraphicsSceneMouseRelease) {
        QGraphicsSceneMouseEvent *ge = dynamic_cast<QGraphicsSceneMouseEvent*> (_e);
        if(windowFrameSectionAt(ge->pos()) != Qt::TopSection) {
            _e->accept();
            return false;
        }
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    }
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    return QGraphicsProxyWidget::windowFrameEvent(_e);
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}

//-----------------------------------------------------------------------------

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Qt::WindowFrameSection QtSlideWindow::windowFrameSectionAt(const QPointF &_pos) const {

    if (_pos.x() >= 2 && _pos.x() < geometry().width() - 2 - (13 * 2) && _pos.y() >= -15 && _pos.y() <= -10) {
        return Qt::TopSection;
    }

    return Qt::NoSection;
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}

//-----------------------------------------------------------------------------

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void QtSlideWindow::hoverEnterEvent(QGraphicsSceneHoverEvent *) {

    // Don't do anything if animation is currently in progress
    if(animating_) return;

    if (autohideButton_->isChecked() && down_) {
        slideUp();
    }
    if (!mainWidget_->isVisible()) {
        setWidget(mainWidget_);
        setWindowFlags(Qt::Window | Qt::CustomizeWindowHint | Qt::WindowTitleHint);
        show();
    }
}

//-----------------------------------------------------------------------------

void QtSlideWindow::hoverLeaveEvent(QGraphicsSceneHoverEvent *) {

    // Don't do anything if animation is currently in progress
    if(animating_) return;

    if (autohideButton_->isChecked() && !down_) {
        slideDown();
    }
}

//-----------------------------------------------------------------------------

void QtSlideWindow::resizeEvent(QGraphicsSceneResizeEvent *_event) {

    QGraphicsProxyWidget::resizeEvent(_event);
}

//-----------------------------------------------------------------------------

void QtSlideWindow::moveEvent(QGraphicsSceneMoveEvent *_event) {

    QGraphicsProxyWidget::moveEvent(_event);
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}

//-----------------------------------------------------------------------------

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void QtSlideWindow::detachPressed() {

    setWidget(0);

    dialog_ = new QDialog(0, Qt::Window);
    dialog_->setWindowTitle(name_);
    dialog_->setLayout(new QVBoxLayout);
    dialog_->resize(mainWidget_->size());
    dialog_->layout()->addWidget(mainWidget_);

    if (scene() && scene()->views()[0] && scene()->views()[0]->window()) {
        QWidget *w = scene()->views()[0]->window();
        int x = (w->width() - mainWidget_->width()) / 2;
        x += w->x();
        x = qMax(0, x);
        int y = (w->height() - mainWidget_->height()) / 2;
        y += w->y();
        y = qMax(0, y);
        dialog_->move(x, y);
    }

    hide();

    dialog_->show();
    connect (dialog_, SIGNAL(finished (int)), this, SLOT(dialogClosed ()));
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}

//-----------------------------------------------------------------------------

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void QtSlideWindow::dialogClosed() {

    dialog_ = 0;
    mainWidget_->setParent(0);

    setWidget(mainWidget_);
    setWindowFlags(Qt::Window | Qt::CustomizeWindowHint | Qt::WindowTitleHint);

    show();

    updateGeometry();
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}

//-----------------------------------------------------------------------------

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void QtSlideWindow::autohidePressed() {

    if(!autohideButton_->isChecked() && down_) {
        slideUp();
    }
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}

//-----------------------------------------------------------------------------

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void QtSlideWindow::updateParentGeometry() {

    startP_.setX(10);
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    startP_.setY(parentWidget()->geometry().height() - geometry().height());
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    endP_.setX(10);
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    endP_.setY(parentWidget()->geometry().height() - (size().height() - geometry().height()));
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}

//-----------------------------------------------------------------------------

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void QtSlideWindow::animationFinished() {

    animating_ = false;
}

void QtSlideWindow::slideUp() {
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    if(!widget()) return;

    updateParentGeometry();

    down_ = false;
    animating_ = true;

    animation_->setStartValue(endP_);
    animation_->setEndValue(startP_);

    animation_->start();
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}

//-----------------------------------------------------------------------------

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void QtSlideWindow::slideDown() {

    if(!widget()) return;

    updateParentGeometry();

    down_ = true;
    animating_ = true;

    animation_->setStartValue(startP_);
    animation_->setEndValue(endP_);

    animation_->start();
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}

//-----------------------------------------------------------------------------

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void QtSlideWindow::updateGeometry() {

    if (parentWidget() && widget()) {

        updateParentGeometry();

        resize(parentWidget()->geometry().width() - 20, widget()->size().height());

        if(down_) {
            setPos(endP_);
        } else {
            setPos(startP_);
        }

        if (autohideButton_) {
            autohideButton_->setPos(geometry().width() - 12, -13);
        }
        if (detachButton_) {
            detachButton_->setPos(geometry().width() - 25, -13);
        }
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    }
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}

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//-----------------------------------------------------------------------------

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void QtSlideWindow::saveState(QSettings &_settings) {

    _settings.setValue("AutoHide", autohideButton_->isChecked());
    _settings.setValue("Detached", (dialog_ != 0));
    _settings.setValue("WidgedGeometry", (mainWidget_) ? mainWidget_->saveGeometry() : QByteArray());
    _settings.setValue("DialogGeometry", (dialog_) ? dialog_->saveGeometry() : QByteArray());
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}

//-----------------------------------------------------------------------------

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void QtSlideWindow::restoreState(QSettings &_settings) {

    autohideButton_->setChecked(_settings.value("AutoHide", autohideButton_->isChecked()).toBool());

    if (_settings.value("Detached", false).toBool() && !dialog_ && mainWidget_) {
        detachPressed();
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    }
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    if (mainWidget_) {
        mainWidget_->restoreGeometry(_settings.value("WidgedGeometry").toByteArray());
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    }
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    if (autohideButton_->isChecked()) {
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    } else {
        if (!mainWidget_->isVisible()) {
            setWidget(mainWidget_);
            setWindowFlags(Qt::Window | Qt::CustomizeWindowHint | Qt::WindowTitleHint);
            show();
        }
    }
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    if (dialog_)
        dialog_->restoreGeometry(_settings.value("DialogGeometry").toByteArray());
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}

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//=============================================================================
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