aboutsummaryrefslogtreecommitdiffstats
path: root/examples/quick/demos/photosurface/photosurface.qml
blob: 80957180d0c379549f697f8babdb8f9db2b1c46b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.0
import QtQuick.Dialogs 1.0
import Qt.labs.folderlistmodel 1.0

Rectangle {
    id: root
    width: 1024; height: 600
    color: "black"
    visible: true
    property int highestZ: 0
    property real defaultSize: 200

    FileDialog {
        id: fileDialog
        title: "Choose a folder with some images"
        selectFolder: true
        onAccepted: { folderModel.folder = filePaths[0] + "/" }
    }

    Repeater {
        model: FolderListModel {
            id: folderModel
            objectName: "folderModel"
            showDirs: false
            nameFilters: ["*.png", "*.jpg", "*.gif"]
        }
        Rectangle {
            id: photoFrame
            width: image.width * image.scale + 20
            height: image.height * image.scale + 20
            border.color: "black"
            border.width: 2
            smooth: true
            antialiasing: true
            x: Math.random() * root.width - defaultSize
            y: Math.random() * root.height - defaultSize
            rotation: Math.random() * 13 - 6
            Image {
                id: image
                anchors.centerIn: parent
                fillMode: Image.PreserveAspectFit
                source: folderModel.folder + fileName
                scale: defaultSize / Math.max(sourceSize.width, sourceSize.height)
                antialiasing: true
            }
            PinchArea {
                anchors.fill: parent
                property real initialScale
                property real initialRotation
                onPinchStarted: {
                    initialScale = image.scale
                    initialRotation = parent.rotation
                }
                onPinchUpdated: {
                    image.scale = initialScale * pinch.scale;
                    parent.rotation = initialRotation + pinch.rotation
                    if (Math.abs(photoFrame.rotation) < 4)
                        parent.rotation = 0;
                }
                onPinchFinished: photoFrame.border.color = "black";
                MouseArea {
                    id: dragArea
                    hoverEnabled: true
                    anchors.fill: parent
                    drag.target: photoFrame
                    onPressed: photoFrame.z = ++root.highestZ;
                    onEntered: photoFrame.border.color = "red";
                    onExited: photoFrame.border.color = "black";
                    onWheel: {
                        if (wheel.modifiers & Qt.ControlModifier) {
                            photoFrame.rotation += wheel.angleDelta.y / 120 * 5;
                            if (Math.abs(photoFrame.rotation) < 4)
                                photoFrame.rotation = 0;
                        } else {
                            photoFrame.rotation += wheel.angleDelta.x / 120;
                            if (Math.abs(photoFrame.rotation) < 0.6)
                                photoFrame.rotation = 0;
                            var scaleBefore = image.scale;
                            image.scale += image.scale * wheel.angleDelta.y / 120 / 10;
                            photoFrame.x -= image.width * (image.scale - scaleBefore) / 2.0;
                            photoFrame.y -= image.height * (image.scale - scaleBefore) / 2.0;
                        }
                    }
                }
            }
        }
    }
    Text {
        anchors.bottom: parent.bottom
        anchors.left: parent.left
        anchors.margins: 10
        color: "darkgrey"
        text: "On a touchscreen: use two fingers to zoom and rotate, one finger to drag\n" +
              "With a mouse: drag normally, use the vertical wheel to zoom, horizontal wheel to rotate, or hold Ctrl while using the vertical wheel to rotate"
    }

    Component.onCompleted: fileDialog.open()
}