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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
import QtQuick 2.0
import QtQuick.Controls 1.2
import TimelineRenderer 1.0
import QtQml.Models 2.1
ScrollView {
id: scroller
property QtObject zoomer
property QtObject modelProxy
property int contentX: flick.contentX
property int contentY: flick.contentY
property int contentWidth: flick.contentWidth
property int contentHeight: flick.contentHeight
property bool selectionLocked
property int typeId
signal propagateSelection(int newModel, int newItem)
function clearChildren()
{
timelineView.clearChildren();
}
function select(modelIndex, eventIndex)
{
timelineView.select(modelIndex, eventIndex);
}
function moveCategories(sourceIndex, targetIndex)
{
timelineModel.items.move(sourceIndex, targetIndex)
}
function scroll()
{
flick.scroll();
}
// ScrollView will try to deinteractivate it. We don't want that
// as the horizontal flickable is interactive, too. We do occasionally
// switch to non-interactive ourselves, though.
property bool stayInteractive: true
onStayInteractiveChanged: flick.interactive = stayInteractive
Flickable {
id: flick
contentHeight: timelineView.height + height
flickableDirection: Flickable.HorizontalAndVerticalFlick
boundsBehavior: Flickable.StopAtBounds
pixelAligned: true
onInteractiveChanged: interactive = stayInteractive
property bool recursionGuard: false
function guarded(operation) {
if (recursionGuard)
return;
recursionGuard = true;
operation();
recursionGuard = false;
}
// Logically we should bind to scroller.width above as we use scroller.width in scroll().
// However, this width changes before scroller.width when the window is resized and if we
// don't explicitly set contentX here, for some reason an automatic change in contentX is
// triggered after this width has changed, but before scroller.width changes. This would be
// indistinguishabe from a manual flick by the user and thus changes the range position. We
// don't want to change the range position on resizing the window. Therefore we bind to this
// width.
onWidthChanged: scroll()
// Update the zoom control on scrolling.
onContentXChanged: guarded(function() {
var newStartTime = contentX * zoomer.rangeDuration / scroller.width
+ zoomer.windowStart;
if (isFinite(newStartTime) && Math.abs(newStartTime - zoomer.rangeStart) >= 1) {
var newEndTime = (contentX + scroller.width) * zoomer.rangeDuration / scroller.width
+ zoomer.windowStart;
if (isFinite(newEndTime))
zoomer.setRange(newStartTime, newEndTime);
}
});
// Scroll when the zoom control is updated
function scroll() {
guarded(function() {
if (zoomer.rangeDuration <= 0) {
contentWidth = 0;
contentX = 0;
} else {
var newWidth = zoomer.windowDuration * scroller.width / zoomer.rangeDuration;
if (isFinite(newWidth) && Math.abs(newWidth - contentWidth) >= 1)
contentWidth = newWidth;
var newStartX = (zoomer.rangeStart - zoomer.windowStart) * scroller.width /
zoomer.rangeDuration;
if (isFinite(newStartX) && Math.abs(newStartX - contentX) >= 1)
contentX = newStartX;
}
});
}
Column {
id: timelineView
signal clearChildren
signal select(int modelIndex, int eventIndex)
DelegateModel {
id: timelineModel
model: modelProxy.models
delegate: TimelineRenderer {
id: renderer
model: modelData
notes: modelProxy.notes
zoomer: scroller.zoomer
selectionLocked: scroller.selectionLocked
x: 0
height: modelData.height
property int visualIndex: DelegateModel.itemsIndex
// paint "under" the vertical scrollbar, so that it always matches with the
// timemarks
width: flick.contentWidth
Connections {
target: timelineView
onClearChildren: renderer.clearData()
onSelect: {
if (modelIndex === index || modelIndex === -1) {
renderer.selectedItem = eventIndex;
if (eventIndex !== -1)
renderer.recenter();
}
}
}
function recenter() {
if (modelData.endTime(selectedItem) < zoomer.rangeStart ||
modelData.startTime(selectedItem) > zoomer.rangeEnd) {
var newStart = Math.max((modelData.startTime(selectedItem) +
modelData.endTime(selectedItem) -
zoomer.rangeDuration) / 2, zoomer.traceStart);
zoomer.setRange(newStart,
Math.min(newStart + zoomer.rangeDuration, zoomer.traceEnd));
}
var row = modelData.row(selectedItem);
var rowStart = modelData.rowOffset(row) + y;
var rowEnd = rowStart + modelData.rowHeight(row);
if (rowStart < flick.contentY || rowEnd - scroller.height > flick.contentY)
flick.contentY = (rowStart + rowEnd - scroller.height) / 2;
}
onSelectedItemChanged: scroller.propagateSelection(index, selectedItem);
Connections {
target: model
onDetailsChanged: {
if (selectedItem != -1) {
scroller.propagateSelection(-1, -1);
scroller.propagateSelection(index, selectedItem);
}
}
}
}
}
Repeater {
id: repeater
model: timelineModel
}
}
}
}
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