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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"
readonly property int eventsPerPass: 512
property int increment: -1
property int offset: -1
readonly property int bump: 10;
readonly property int blockHeight: (height - bump) / qmlProfilerModelProxy.models.length;
// ***** properties
height: 50
property bool dataReady: false
property double startTime : 0
property double endTime : 0
property bool recursionGuard: false
onWidthChanged: offset = -1
// ***** functions
function clear()
{
dataReady = false;
increment = -1;
offset = -1;
requestPaint();
}
function updateRange() {
if (recursionGuard)
return;
var newStartTime = Math.round(rangeMover.rangeLeft * qmlProfilerModelProxy.traceDuration() / width) + qmlProfilerModelProxy.traceStartTime();
var newEndTime = Math.round(rangeMover.rangeRight * qmlProfilerModelProxy.traceDuration() / width) + qmlProfilerModelProxy.traceStartTime();
if (startTime !== newStartTime || endTime !== newEndTime)
zoomControl.setRange(newStartTime, Math.max(newEndTime, newStartTime + 500));
}
function clamp(val, min, max) {
return Math.min(Math.max(val, min), max);
}
// ***** connections to external objects
Connections {
target: zoomControl
onRangeChanged: {
if (qmlProfilerModelProxy) {
recursionGuard = true;
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.rangeWidth) > 1;
var leftChanged = Math.abs(newRangeX - rangeMover.rangeLeft) > 1;
if (leftChanged)
rangeMover.rangeLeft = newRangeX;
if (leftChanged || widthChanged)
rangeMover.rangeRight = newRangeX + newWidth;
recursionGuard = false;
}
}
}
Connections {
target: qmlProfilerModelProxy
onDataAvailable: {
dataReady = true;
increment = 0;
for (var i = 0; i < qmlProfilerModelProxy.modelCount(); ++i)
increment += qmlProfilerModelProxy.count(i);
increment = Math.ceil(increment / eventsPerPass);
offset = -1;
requestPaint();
}
}
Timer {
id: paintTimer
repeat: true
running: offset >= 0
interval: offset == 0 ? 1000 : 14 // Larger initial delay to avoid flickering on resize
onTriggered: canvas.requestPaint()
}
// ***** slots
onPaint: {
var context = (canvas.context === null) ? getContext("2d") : canvas.context;
Plotter.qmlProfilerModelProxy = qmlProfilerModelProxy;
if (offset < 0) {
context.reset();
Plotter.drawGraph(canvas, context);
if (dataReady) {
Plotter.drawTimeBar(canvas, context);
offset = 0;
}
} else if (offset < increment) {
Plotter.drawData(canvas, context);
++offset;
} else if (offset < 2 * increment) {
Plotter.drawBindingLoops(canvas, context);
++offset;
} else {
offset = -1;
}
}
// ***** child items
MouseArea {
anchors.fill: canvas
function jumpTo(posX) {
var newX = posX - rangeMover.rangeWidth / 2;
if (newX < 0)
newX = 0;
if (newX + rangeMover.rangeWidth > canvas.width)
newX = canvas.width - rangeMover.rangeWidth;
if (newX < rangeMover.rangeLeft) {
// Changing left border will change width, so precompute right border here.
var right = newX + rangeMover.rangeWidth;
rangeMover.rangeLeft = newX;
rangeMover.rangeRight = right;
} else if (newX > rangeMover.rangeLeft) {
rangeMover.rangeRight = newX + rangeMover.rangeWidth;
rangeMover.rangeLeft = newX;
}
}
onPressed: {
jumpTo(mouse.x);
}
onPositionChanged: {
jumpTo(mouse.x);
}
}
RangeMover {
id: rangeMover
visible: dataReady
onRangeLeftChanged: canvas.updateRange()
onRangeRightChanged: canvas.updateRange()
}
Rectangle {
height: 1
width: parent.width
color: "#858585"
}
}
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