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import UnityApplications 1.0 /* Necessary for the ImageProvider serving image://icons */
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/* Renderers typically use a grid layout to render the model. The RendererGrid
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component provides a standard implementation of such a layout where the
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cells can be customized by providing a QML component to it.
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A user of RendererGrid would create a renderer inheriting from it
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and pass a Component via the 'cellRenderer' property.
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property variant cellRenderer
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property bool folded: true
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property int cellWidth: 158
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property int cellHeight: 76
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property int horizontalSpacing: 26
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property int verticalSpacing: 26
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/* Using results.contentHeight produces binding loop warnings and potential
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rendering issues. We compute the height manually.
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/* FIXME: tricking the system by making the delegate of height 0 and with
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an invisible header is no good: the item in the model still
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exists and some things such as keyboard selection break.
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height: results.count > 0 ? header.height + results_layout.anchors.topMargin + results.totalHeight : 0
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//Behavior on height {NumberAnimation {duration: 200}}
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visible: results.count > 0
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availableCount: results.count - results.cellsPerLine
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anchors.top: parent.top
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anchors.left: parent.left
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anchors.right: parent.right
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label: parent.displayName
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onClicked: parent.folded = !parent.folded
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anchors.top: header.bottom
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anchors.left: parent.left
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anchors.right: parent.right
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anchors.bottom: parent.bottom
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/* FIXME: this is a gross hack compensating for the lack of sections
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in GridView (see ListView.section).
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We nest GridViews inside a ListView and add headers manually
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(GroupHeader). The total height of each Group is computed
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manually and given back to the ListView. However that size cannot
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be used by the individual GridViews because it would make them
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load all of their delegates at once using far too much memory and
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processing power. Instead we constrain the height of the GridViews
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and compute their position manually to compensate for the position
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changes when flicking the ListView.
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We assume that renderer.parentListView is the ListView we nest our
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property variant flickable: renderer.parentListView
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/* flickable.contentY*0 is equal to 0 but is necessary in order to
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have the entire expression being evaluated at the right moment.
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property int inFlickableY: flickable.contentY*0+parent.mapToItem(flickable, 0, 0).y
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property int compensateY: inFlickableY > 0 ? 0 : -inFlickableY
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width: flickable.width
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height: Math.min(totalHeight, flickable.height)
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onCompensateYChanged: {
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if (flickable.height > 0 && totalHeight >= flickable.height) {
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contentY = compensateY
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property int cellsPerLine: Math.floor(width/results.cellWidth)
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/* Only display one line of items when folded */
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property int displayedCount: folded ? cellsPerLine : count
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property int totalHeight: results.cellHeight*Math.ceil(displayedCount/cellsPerLine)
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cellWidth: renderer.cellWidth+renderer.horizontalSpacing
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cellHeight: renderer.cellHeight+renderer.verticalSpacing
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property url uri: column_0
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property string iconHint: column_1
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property string groupId: column_2
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property string mimetype: column_3
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property string displayName: column_4
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property string comment: column_5
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width: renderer.cellWidth
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height: renderer.cellHeight
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sourceComponent: cellRenderer
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item.iconHint = iconHint
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item.mimetype = mimetype
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item.displayName = displayName
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item.comment = comment
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model: renderer.model
added
removed
.pc/debian-changes-0.1-0ubuntu4/places/RendererGrid.qml
