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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
import QtQuick
import QtCreator.Tracing
Item {
id: timeDisplay
property double windowStart
property double rangeDuration
property int textMargin: 5
property int labelsHeight: 24
property int fontSize: 8
property int initialBlockLength: 120
property double spacing: width / rangeDuration
property double timePerBlock: Math.pow(2, Math.floor(Math.log(initialBlockLength / spacing) /
Math.LN2))
property double alignedWindowStart: Math.round(windowStart - (windowStart % timePerBlock))
property double pixelsPerBlock: timeDisplay.timePerBlock * timeDisplay.spacing
property double pixelsPerSection: pixelsPerBlock / 5
property int contentX
property int offsetX: contentX + Math.round((windowStart % timePerBlock) * spacing)
Rectangle {
anchors.left: parent.left
anchors.right: parent.right
anchors.top: parent.top
height: timeDisplay.labelsHeight
color: Theme.color(Theme.PanelStatusBarBackgroundColor)
}
Item {
x: -(timeDisplay.offsetX % timeDisplay.pixelsPerBlock)
y: 0
id: timeDisplayArea
property int firstBlock: timeDisplay.offsetX / timeDisplay.pixelsPerBlock
property int offset: repeater.model > 0 ? repeater.model - (firstBlock % repeater.model)
: 0;
Repeater {
id: repeater
model: Math.max(0, Math.floor(timeDisplay.width / timeDisplay.initialBlockLength * 2
+ 2))
Item {
id: timeDisplayItem
// Changing the text in text nodes is expensive. We minimize the number of changes
// by rotating the nodes during scrolling.
property int stableIndex: (index + timeDisplayArea.offset) % repeater.model
height: timeDisplay.height
y: 0
x: width * stableIndex
width: timeDisplay.pixelsPerBlock
property double blockStartTime: (timeDisplayArea.firstBlock + stableIndex)
* timeDisplay.timePerBlock
+ timeDisplay.alignedWindowStart
TimelineText {
id: timeLabel
anchors.top: parent.top
anchors.left: parent.left
anchors.right: parent.right
height: timeDisplay.labelsHeight
font.pixelSize: timeDisplay.fontSize
anchors.rightMargin: timeDisplay.textMargin
verticalAlignment: Text.AlignVCenter
text: TimeFormatter.format(timeDisplayItem.blockStartTime,
timeDisplay.rangeDuration)
visible: width > 0
color: Theme.color(Theme.PanelTextColorLight)
elide: Text.ElideLeft
}
Row {
anchors.left: parent.left
anchors.right: parent.right
anchors.top: timeLabel.bottom
anchors.bottom: parent.bottom
Repeater {
model: 4
Item {
anchors.top: parent.top
anchors.bottom: parent.bottom
width: timeDisplay.pixelsPerSection
Rectangle {
visible: timeDisplayItem.stableIndex !== 0
|| (-timeDisplayArea.x < parent.x + x)
color: Theme.color(Theme.Timeline_DividerColor)
width: 1
anchors.top: parent.top
anchors.bottom: parent.bottom
anchors.right: parent.right
}
}
}
}
Rectangle {
color: Theme.color(Theme.Timeline_DividerColor)
width: 1
anchors.top: parent.top
anchors.bottom: parent.bottom
anchors.right: parent.right
}
}
}
}
}
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