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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: http://www.qt-project.org/
**
**
** GNU Lesser General Public License Usage
**
** 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, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**************************************************************************/
.pragma library
var qmlProfilerDataModel = 0;
//draw background of the graph
function drawGraph(canvas, ctxt, region)
{
ctxt.fillStyle = "#eaeaea";
ctxt.fillRect(0, 0, canvas.width, canvas.height);
}
//draw the actual data to be graphed
function drawData(canvas, ctxt, region)
{
if ((!qmlProfilerDataModel) || qmlProfilerDataModel.count() == 0)
return;
var typeCount = 5;
var width = canvas.width;
var bump = 10;
var height = canvas.height - bump;
var blockHeight = height / typeCount;
var spacing = width / qmlProfilerDataModel.traceDuration();
var highest = [0,0,0,0,0]; // note: change if typeCount changes
for (var ii = 0; ii < qmlProfilerDataModel.count(); ++ii) {
var xx = (qmlProfilerDataModel.getStartTime(ii) -
qmlProfilerDataModel.traceStartTime()) * spacing;
if (xx > region.x + region.width)
continue;
var eventWidth = qmlProfilerDataModel.getDuration(ii) * spacing;
if (xx + eventWidth < region.x)
continue;
if (eventWidth < 1)
eventWidth = 1;
xx = Math.round(xx);
var ty = qmlProfilerDataModel.getType(ii);
if (xx + eventWidth > highest[ty]) {
// special: animations
if (ty === 0 && qmlProfilerDataModel.getAnimationCount(ii) >= 0) {
var vertScale = qmlProfilerDataModel.getMaximumAnimationCount() -
qmlProfilerDataModel.getMinimumAnimationCount();
if (vertScale < 1)
vertScale = 1;
var fraction = (qmlProfilerDataModel.getAnimationCount(ii) -
qmlProfilerDataModel.getMinimumAnimationCount()) / vertScale;
var eventHeight = blockHeight * (fraction * 0.85 + 0.15);
var yy = bump + ty*blockHeight + blockHeight - eventHeight;
var fpsFraction = qmlProfilerDataModel.getFramerate(ii) / 60.0;
if (fpsFraction > 1.0)
fpsFraction = 1.0;
ctxt.fillStyle = "hsl("+(fpsFraction*0.27+0.028)+",0.3,0.65)";
ctxt.fillRect(xx, yy, eventWidth, eventHeight);
} else {
var hue = ( qmlProfilerDataModel.getEventId(ii) * 25 ) % 360;
ctxt.fillStyle = "hsl("+(hue/360.0+0.001)+",0.3,0.65)";
ctxt.fillRect(xx, bump + ty*blockHeight, eventWidth, blockHeight);
}
highest[ty] = xx+eventWidth;
}
}
// binding loops
ctxt.strokeStyle = "orange";
ctxt.lineWidth = 2;
var radius = 1;
for (var ii = 0; ii < qmlProfilerDataModel.count(); ++ii) {
if (qmlProfilerDataModel.getBindingLoopDest(ii) >= 0) {
var xcenter = Math.round(qmlProfilerDataModel.getStartTime(ii) +
qmlProfilerDataModel.getDuration(ii) -
qmlProfilerDataModel.traceStartTime()) * spacing;
var ycenter = Math.round(bump + qmlProfilerDataModel.getType(ii) *
blockHeight + blockHeight/2);
ctxt.arc(xcenter, ycenter, radius, 0, 2*Math.PI, true);
ctxt.stroke();
}
}
}
function drawTimeBar(canvas, ctxt, region)
{
if (!qmlProfilerDataModel)
return;
var width = canvas.width;
var height = 10;
var startTime = qmlProfilerDataModel.traceStartTime();
var endTime = qmlProfilerDataModel.traceEndTime();
var totalTime = qmlProfilerDataModel.traceDuration();
var spacing = width / totalTime;
var initialBlockLength = 120;
var timePerBlock = Math.pow(2, Math.floor( Math.log( totalTime / width *
initialBlockLength ) / Math.LN2 ) );
var pixelsPerBlock = timePerBlock * spacing;
var pixelsPerSection = pixelsPerBlock / 5;
var blockCount = width / pixelsPerBlock;
var realStartTime = Math.floor(startTime/timePerBlock) * timePerBlock;
var realStartPos = (startTime-realStartTime) * spacing;
var timePerPixel = timePerBlock/pixelsPerBlock;
ctxt.fillStyle = "#000000";
ctxt.font = "6px sans-serif";
ctxt.fillStyle = "#cccccc";
ctxt.fillRect(0, 0, width, height);
for (var ii = 0; ii < blockCount+1; ii++) {
var x = Math.floor(ii*pixelsPerBlock - realStartPos);
// block boundary
ctxt.strokeStyle = "#525252";
ctxt.beginPath();
ctxt.moveTo(x, height/2);
ctxt.lineTo(x, height);
ctxt.stroke();
// block time label
ctxt.fillStyle = "#000000";
var timeString = prettyPrintTime((ii+0.5)*timePerBlock + realStartTime);
ctxt.textAlign = "center";
ctxt.fillText(timeString, x + pixelsPerBlock/2, height/2 + 3);
}
ctxt.fillStyle = "#808080";
ctxt.fillRect(0, height-1, width, 1);
}
function prettyPrintTime( t )
{
if (t <= 0) return "0";
if (t<1000) return t+" ns";
t = t/1000;
if (t<1000) return t+" μs";
t = Math.floor(t/100)/10;
if (t<1000) return t+" ms";
t = Math.floor(t)/1000;
if (t<60) return t+" s";
var m = Math.floor(t/60);
t = Math.floor(t - m*60);
return m+"m"+t+"s";
}
function plot(canvas, ctxt, region)
{
drawGraph(canvas, ctxt, region);
drawData(canvas, ctxt, region);
drawTimeBar(canvas, ctxt, region);
}
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