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* Copyright (C) 2013 Canonical, Ltd.
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 3.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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import Ubuntu.Components 0.1
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property int minimumHorizontalSpacing: units.gu(0.5)
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// property int minimumNumberOfColumns: 2 // FIXME: not implemented
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property int maximumNumberOfColumns: 6
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readonly property int columns: flow.columns
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property alias verticalSpacing: flow.verticalSpacing
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property alias horizontalSpacing: flow.horizontalSpacing
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property int referenceDelegateWidth
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property alias firstModel: repeater1.model
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property alias secondModel: repeater2.model
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property alias delegate: repeater1.delegate
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readonly property int cellWidth: referenceDelegateWidth + horizontalSpacing
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readonly property int cellHeight: referenceDelegateWidth + verticalSpacing
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property alias move: flow.move
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height: flow.height + flow.anchors.topMargin
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topMargin: verticalSpacing
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function pixelToGU(value) {
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return Math.floor(value / units.gu(1));
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function spacingForColumns(columns) {
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// spacing between columns as an integer number of GU, the remainder goes in the margins
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var spacingGU = pixelToGU(allocatableVerticalSpace / columns);
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return units.gu(spacingGU);
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function columnsForSpacing(space) {
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// minimum margin is half of the spacing
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return Math.floor((parent.width - space/2) / (referenceDelegateWidth + space));
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property real allocatableVerticalSpace: parent.width - columns * referenceDelegateWidth
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property int columns: Math.min(columnsForSpacing(minimumHorizontalSpacing), maximumNumberOfColumns)
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property real horizontalSpacing: spacingForColumns(columns)
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property real verticalSpacing: horizontalSpacing
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property int margin: allocatableVerticalSpace - columns * horizontalSpacing
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model: (root.model) ? root.model[0] : null
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model: (root.model) ? root.model[1] : null
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delegate: repeater1.delegate