2 * Copyright (C) 2013 Canonical, Ltd.
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.
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.
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/>.
18 import Ubuntu.Components 0.1
21 Essentially a GridView where you can specify the maximum number of columns it can have.
24 property int minimumHorizontalSpacing: units.gu(0.5)
25 // property int minimumNumberOfColumns: 2 // FIXME: not implemented
26 property int maximumNumberOfColumns: 6
27 readonly property int columns: gridView.columns
28 property alias verticalSpacing: gridView.verticalSpacing
29 readonly property alias margins: gridView.margin
30 property int delegateWidth
31 property int delegateHeight
32 property alias model: gridView.model
33 property alias delegate: gridView.delegate
34 readonly property int cellWidth: gridView.cellWidth
35 readonly property int cellHeight: gridView.cellHeight
36 readonly property int totalContentHeight: {
37 return contentHeightForRows(Math.ceil(gridView.model.count / columns), cellHeight)
39 property alias interactive: gridView.interactive
40 readonly property alias flicking: gridView.flicking
41 readonly property alias moving: gridView.moving
42 readonly property alias pressDelay: gridView.pressDelay
43 readonly property alias originY: gridView.originY
44 property alias displayMarginBeginning: gridView.displayMarginBeginning
45 property alias displayMarginEnd: gridView.displayMarginEnd
46 property alias highlightIndex: gridView.highlightIndex
47 property alias cacheBuffer: gridView.cacheBuffer
48 readonly property alias currentItem: gridView.currentItem
50 function contentHeightForRows(rows, height) {
56 objectName: "responsiveGridViewGrid"
62 clip: parent.height != totalContentHeight
64 function pixelToGU(value) {
65 return Math.floor(value / units.gu(1));
68 function spacingForColumns(columns) {
69 // spacing between columns as an integer number of GU, the remainder goes in the margins
70 var spacingGU = pixelToGU(allocatableHorizontalSpace / columns);
71 return units.gu(spacingGU);
74 function columnsForSpacing(spacing) {
75 // minimum margin is half of the spacing
76 return Math.max(1, Math.floor(parent.width / (delegateWidth + spacing)));
79 property real allocatableHorizontalSpace: parent.width - columns * delegateWidth
80 property int columns: Math.min(columnsForSpacing(minimumHorizontalSpacing), maximumNumberOfColumns)
81 property real horizontalSpacing: spacingForColumns(columns)
82 property real verticalSpacing: horizontalSpacing
83 property int margin: allocatableHorizontalSpace - columns * horizontalSpacing
84 property int highlightIndex: -1
86 cellWidth: delegateWidth + horizontalSpacing
87 cellHeight: delegateHeight + verticalSpacing
89 onHighlightIndexChanged: {
90 if (highlightIndex != -1) {
91 currentIndex = highlightIndex