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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the QML Presentation System.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Digia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.0
import QtQuick.Window 2.0
Item {
id: root
property variant slides: []
property int currentSlide;
property bool showNotes: false;
property color titleColor: textColor;
property color textColor: "black"
property string fontFamily: "Helvetica"
property string codeFontFamily: "Courier New"
property real masterVolume: 0.5
// Private API
property bool _faded: false
property int _userNum;
Component.onCompleted: {
var slideCount = 0;
var slides = [];
for (var i=0; i<root.children.length; ++i) {
var r = root.children[i];
if (r.isSlide) {
slides.push(r);
}
}
root.slides = slides;
root._userNum = 0;
// Make first slide visible...
if (root.slides.length > 0) {
root.currentSlide = 0;
root.slides[root.currentSlide].visible = true;
}
}
function switchSlides(from, to, forward) {
from.visible = false
to.visible = true
return true
}
function goToNextSlide() {
root._userNum = 0
if (_faded)
return
if (root.currentSlide + 1 < root.slides.length) {
var from = slides[currentSlide]
var to = slides[currentSlide + 1]
to.textAnimating = true
if (switchSlides(from, to, true)) {
currentSlide = currentSlide + 1;
root.focus = true;
}
}
timer.stop()
if (slides[currentSlide].shouldTimeout)
timer.start()
}
function goToPreviousSlide() {
root._userNum = 0
if (root._faded)
return
if (root.currentSlide - 1 >= 0) {
var from = slides[currentSlide]
var to = slides[currentSlide - 1]
to.textAnimating = false
if (switchSlides(from, to, false)) {
currentSlide = currentSlide - 1;
root.focus = true;
}
}
timer.stop()
}
function goToUserSlide() {
--_userNum;
if (root._faded || _userNum >= root.slides.length)
return
if (_userNum < 0)
goToNextSlide()
else if (root.currentSlide != _userNum) {
var from = slides[currentSlide]
var to = slides[_userNum]
if (switchSlides(from, to, _userNum > currentSlide)) {
currentSlide = _userNum;
root.focus = true;
}
}
timer.stop()
}
Timer {
id: timer
interval: slides[currentSlide].timeout > 0 ? slides[currentSlide].timeout : 7000
running: false
onTriggered: goToNextSlide()
}
focus: true
Keys.onSpacePressed: goToNextSlide()
Keys.onRightPressed: goToNextSlide()
Keys.onDownPressed: goToNextSlide()
Keys.onLeftPressed: goToPreviousSlide()
Keys.onUpPressed: goToPreviousSlide()
Keys.onEscapePressed: Qt.quit()
Keys.onPressed: {
if (event.key >= Qt.Key_0 && event.key <= Qt.Key_9)
_userNum = 10 * _userNum + (event.key - Qt.Key_0)
else {
if (event.key === Qt.Key_Return || event.key === Qt.Key_Enter)
goToUserSlide();
else if (event.key === Qt.Key_VolumeUp)
root.masterVolume = Math.min(1.0, root.masterVolume + 0.1)
else if (event.key === Qt.Key_VolumeDown)
root.masterVolume = Math.max(0.0, root.masterVolume - 0.1)
else if (event.key === Qt.Key_VolumeMute)
root.masterVolume = 0.0
else if (event.key === Qt.Key_Backspace)
goToPreviousSlide();
else if (event.key === Qt.Key_C)
root._faded = !root._faded;
_userNum = 0;
}
}
Keys.onReleased: {
if (event.key === Qt.Key_Back) {
if (root.currentSlide > 0) {
goToPreviousSlide()
event.accepted = true
}
}
}
Rectangle {
z: 1000
color: "black"
anchors.fill: parent
opacity: root._faded ? 1 : 0
Behavior on opacity { NumberAnimation { duration: 250 } }
}
MouseArea {
id: mouseArea
anchors.fill: parent
acceptedButtons: Qt.LeftButton | Qt.RightButton
onClicked: {
if (mouse.button == Qt.RightButton)
goToPreviousSlide()
else
goToNextSlide()
}
onPressAndHold: goToPreviousSlide(); //A back mechanism for touch only devices
}
Window {
id: notesWindow;
width: 400
height: 300
title: "QML Presentation: Notes"
visible: root.showNotes
Text {
anchors.fill: parent
anchors.margins: parent.height * 0.1;
font.pixelSize: 16
wrapMode: Text.WordWrap
property string notes: root.slides[root.currentSlide].notes;
text: notes == "" ? "Slide has no notes..." : notes;
font.italic: notes == "";
}
}
Text {
id: tapToAdvance
color: textColor
anchors.bottom: parent.bottom
anchors.bottomMargin: parent.height * 0.01
anchors.horizontalCenter: parent.horizontalCenter
text: "[ Tap to advance ]"
font.family: fontFamily
font.pixelSize: slides[currentSlide].baseFontSize
opacity: slides[currentSlide].showTapToAdvance ? 1.0 : 0.0
visible: opacity > 0.0
Behavior on opacity {
NumberAnimation { duration: 400 }
}
}
}
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