Unity 8
Background.qml
1 /*
2  * Copyright (C) 2014 Canonical, Ltd.
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; version 3.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU General Public License for more details.
12  *
13  * You should have received a copy of the GNU General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  */
16 
17 import QtQuick 2.4
18 import Ubuntu.Components 1.3
19 import Utils 0.1 as Utils
20 
21 Loader {
22  id: root
23  anchors.fill: parent
24 
25  property url style
26  readonly property var parsedStyle: String(style)
27  .match(/^(color|gradient):\/\/\/(?:(#(?:[0-9a-f]{3,4}){1,2}|[a-z]{3,}))(?:\/(#(?:[0-9a-f]{3,4}){1,2}|[a-z]{3,}))?\/?$/i)
28  readonly property var luminance: {
29  if (!parsedStyle) return 0.5;
30  if (parsedStyle[1] === "color") return Utils.Style.luminance(parsedStyle[2]);
31  else if (parsedStyle[1] === "gradient") return Utils.Style.luminance(parsedStyle[2], parsedStyle[3]);
32  }
33 
34  // FIXME this is only here for highlight purposes (see DashNavigation.qml, too)
35  readonly property color topColor: parsedStyle ? parsedStyle[2] : UbuntuColors.lightGrey
36 
37  sourceComponent: {
38  if (style == "") return null;
39  if (!parsedStyle) return image;
40  if (parsedStyle[1] === "color") return solid
41  if (parsedStyle[1] === "gradient") return gradient
42  }
43 
44  onLoaded: if (item.hasOwnProperty("parsedStyle")) {
45  item.parsedStyle = Qt.binding(function() { return root.parsedStyle } );
46  }
47 
48  Component {
49  id: solid
50 
51  Rectangle {
52  objectName: "solid"
53 
54  property var parsedStyle
55 
56  color: parsedStyle ? parsedStyle[2] : "#ffffff"
57  }
58  }
59 
60  Component {
61  id: gradient
62 
63  Rectangle {
64  objectName: "gradient"
65 
66  property var parsedStyle
67 
68  gradient: Gradient {
69  GradientStop { position: 0; color: parsedStyle ? parsedStyle[2] : "#000000" }
70  GradientStop { position: 1; color: parsedStyle ? parsedStyle[3] : "#000000" }
71  }
72  }
73  }
74 
75  Component {
76  id: image
77 
78  Image {
79  objectName: "image"
80 
81  source: width > 0 && height > 0 && root.style || ""
82 
83  sourceSize.width: width
84  sourceSize.height: height
85  }
86  }
87 }