summaryrefslogtreecommitdiffstats
path: root/demos/declarative/webbrowser/content/FlickableWebView.qml
blob: 947b8436facc65ba463e0bfef3b26701b2fda1f3 (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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

import QtQuick 1.0
import QtWebKit 1.0

Flickable {
    property alias title: webView.title
    property alias icon: webView.icon
    property alias progress: webView.progress
    property alias url: webView.url
    property alias back: webView.back
    property alias stop: webView.stop
    property alias reload: webView.reload
    property alias forward: webView.forward

    id: flickable
    width: parent.width
    contentWidth: Math.max(parent.width,webView.width)
    contentHeight: Math.max(parent.height,webView.height)
    anchors.top: headerSpace.bottom
    anchors.bottom: parent.top
    anchors.left: parent.left
    anchors.right: parent.right
    pressDelay: 200

    onWidthChanged : {
        // Expand (but not above 1:1) if otherwise would be smaller that available width.
        if (width > webView.width*webView.contentsScale && webView.contentsScale < 1.0)
            webView.contentsScale = width / webView.width * webView.contentsScale;
    }

    WebView {
        id: webView
        transformOrigin: Item.TopLeft

        function fixUrl(url)
        {
            if (url == "") return url
            if (url[0] == "/") return "file://"+url
            if (url.indexOf(":")<0) {
                if (url.indexOf(".")<0 || url.indexOf(" ")>=0) {
                    // Fall back to a search engine; hard-code Wikipedia
                    return "http://en.wikipedia.org/w/index.php?search="+url
                } else {
                    return "http://"+url
                }
            }
            return url
        }

        url: fixUrl(webBrowser.urlString)
        smooth: false // We don't want smooth scaling, since we only scale during (fast) transitions
        focus: true

        onAlert: console.log(message)

        function doZoom(zoom,centerX,centerY)
        {
            if (centerX) {
                var sc = zoom*contentsScale;
                scaleAnim.to = sc;
                flickVX.from = flickable.contentX
                flickVX.to = Math.max(0,Math.min(centerX-flickable.width/2,webView.width*sc-flickable.width))
                finalX.value = flickVX.to
                flickVY.from = flickable.contentY
                flickVY.to = Math.max(0,Math.min(centerY-flickable.height/2,webView.height*sc-flickable.height))
                finalY.value = flickVY.to
                quickZoom.start()
            }
        }

        Keys.onLeftPressed: webView.contentsScale -= 0.1
        Keys.onRightPressed: webView.contentsScale += 0.1

        preferredWidth: flickable.width
        preferredHeight: flickable.height
        contentsScale: 1
        onContentsSizeChanged: {
            // zoom out
            contentsScale = Math.min(1,flickable.width / contentsSize.width)
        }
        onUrlChanged: {
            // got to topleft
            flickable.contentX = 0
            flickable.contentY = 0
            if (url != null) { header.editUrl = url.toString(); }
        }
        onDoubleClick: {
                        if (!heuristicZoom(clickX,clickY,2.5)) {
                            var zf = flickable.width / contentsSize.width
                            if (zf >= contentsScale)
                                zf = 2.0*contentsScale // zoom in (else zooming out)
                            doZoom(zf,clickX*zf,clickY*zf)
                         }
                       }

        SequentialAnimation {
            id: quickZoom

            PropertyAction {
                target: webView
                property: "renderingEnabled"
                value: false
            }
            ParallelAnimation {
                NumberAnimation {
                    id: scaleAnim
                    target: webView
                    property: "contentsScale"
                    // the to property is set before calling
                    easing.type: Easing.Linear
                    duration: 200
                }
                NumberAnimation {
                    id: flickVX
                    target: flickable
                    property: "contentX"
                    easing.type: Easing.Linear
                    duration: 200
                    from: 0 // set before calling
                    to: 0 // set before calling
                }
                NumberAnimation {
                    id: flickVY
                    target: flickable
                    property: "contentY"
                    easing.type: Easing.Linear
                    duration: 200
                    from: 0 // set before calling
                    to: 0 // set before calling
                }
            }
            // Have to set the contentXY, since the above 2
            // size changes may have started a correction if
            // contentsScale < 1.0.
            PropertyAction {
                id: finalX
                target: flickable
                property: "contentX"
                value: 0 // set before calling
            }
            PropertyAction {
                id: finalY
                target: flickable
                property: "contentY"
                value: 0 // set before calling
            }
            PropertyAction {
                target: webView
                property: "renderingEnabled"
                value: true
            }
        }
        onZoomTo: doZoom(zoom,centerX,centerY)
    }
}