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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
import QtQuick 2.1
import Monitor 1.0
import "Overview.js" as Plotter
Canvas {
id: canvas
objectName: "Overview"
contextType: "2d"
// ***** properties
height: 50
property bool dataReady: false
property real startTime : 0
property real endTime : 0
// ***** functions
function clearDisplay()
{
dataReady = false;
requestPaint();
}
function updateRange() {
var newStartTime = Math.round(rangeMover.getLeft() * qmlProfilerModelProxy.traceDuration() / width) + qmlProfilerModelProxy.traceStartTime();
var newEndTime = Math.round(rangeMover.getRight() * qmlProfilerModelProxy.traceDuration() / width) + qmlProfilerModelProxy.traceStartTime();
if ((startTime !== newStartTime || endTime !== newEndTime) && newEndTime - newStartTime > 500) {
zoomControl.setRange(newStartTime, newEndTime);
}
}
function clamp(val, min, max) {
return Math.min(Math.max(val, min), max);
}
// ***** connections to external objects
Connections {
target: zoomControl
onRangeChanged: {
if (qmlProfilerModelProxy) {
startTime = clamp(zoomControl.startTime(), qmlProfilerModelProxy.traceStartTime(), qmlProfilerModelProxy.traceEndTime());
endTime = clamp(zoomControl.endTime(), startTime, qmlProfilerModelProxy.traceEndTime());
var newRangeX = (startTime - qmlProfilerModelProxy.traceStartTime()) * width / qmlProfilerModelProxy.traceDuration();
var newWidth = (endTime - startTime) * width / qmlProfilerModelProxy.traceDuration();
var widthChanged = Math.abs(newWidth - rangeMover.getWidth()) > 1;
var leftChanged = Math.abs(newRangeX - rangeMover.getLeft()) > 1;
if (leftChanged)
rangeMover.setLeft(newRangeX);
if (leftChanged || widthChanged)
rangeMover.setRight(newRangeX + newWidth);
}
}
}
Connections {
target: qmlProfilerModelProxy
onDataAvailable: {
dataReady = true;
requestPaint();
}
}
// ***** slots
onPaint: {
Plotter.qmlProfilerModelProxy = qmlProfilerModelProxy;
if (dataReady) {
Plotter.plot(canvas, context, region);
} else {
Plotter.drawGraph(canvas, context, region) //just draw the background
}
}
// ***** child items
MouseArea {
anchors.fill: canvas
function jumpTo(posX) {
var rangeWidth = rangeMover.getWidth();
var newX = posX - rangeWidth / 2;
if (newX < 0)
newX = 0;
if (newX + rangeWidth > canvas.width)
newX = canvas.width - rangeWidth;
if (newX < rangeMover.getLeft()) {
rangeMover.setLeft(newX);
rangeMover.setRight(newX + rangeWidth);
} else if (newX > rangeMover.getLeft()) {
rangeMover.setRight(newX + rangeWidth);
rangeMover.setLeft(newX);
}
}
onPressed: {
jumpTo(mouse.x);
}
onPositionChanged: {
jumpTo(mouse.x);
}
}
RangeMover {
id: rangeMover
visible: dataReady
onRangeChanged: canvas.updateRange()
}
Rectangle {
height: 1
width: parent.width
color: "#858585"
}
}
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