forked from qt-creator/qt-creator
70102410df
Avoid keeping multiple, potentially diverging copies of the same time information and make sure all the times are consistent with each other. Stating the times as properties allows us to use bindings in more places, too. Change-Id: I9cdd4f561ac22ad795939594ba340b1fbc070e9a Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>
121 lines
4.2 KiB
QML
121 lines
4.2 KiB
QML
/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://www.qt.io/licensing. For further information
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** use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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****************************************************************************/
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import QtQuick 2.1
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import Monitor 1.0
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Canvas {
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id: timeDisplay
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objectName: "TimeDisplay"
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contextType: "2d"
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Connections {
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target: zoomControl
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onRangeChanged: requestPaint();
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}
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onPaint: {
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var context = (timeDisplay.context === null) ? getContext("2d") : timeDisplay.context;
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context.reset();
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context.fillStyle = "white";
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context.fillRect(0, 0, width, height);
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var totalTime = Math.max(1, zoomControl.rangeDuration);
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var spacing = width / totalTime;
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var initialBlockLength = 120;
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var timePerBlock = Math.pow(2, Math.floor( Math.log( totalTime / width * initialBlockLength ) / Math.LN2 ) );
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var pixelsPerBlock = timePerBlock * spacing;
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var pixelsPerSection = pixelsPerBlock / 5;
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var blockCount = width / pixelsPerBlock;
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var realStartTime = Math.floor(zoomControl.rangeStart / timePerBlock) * timePerBlock;
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var startPos = (zoomControl.rangeStart - realStartTime) * spacing;
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var timePerPixel = timePerBlock/pixelsPerBlock;
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var initialColor = Math.floor(realStartTime/timePerBlock) % 2;
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context.fillStyle = "#000000";
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context.font = "8px sans-serif";
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for (var ii = 0; ii < blockCount+1; ii++) {
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var x = Math.floor(ii*pixelsPerBlock - startPos);
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context.fillStyle = (ii+initialColor)%2 ? "#E6E6E6":"white";
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context.fillRect(x, 0, pixelsPerBlock, height);
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context.strokeStyle = "#B0B0B0";
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context.beginPath();
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context.moveTo(x, 0);
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context.lineTo(x, height);
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context.stroke();
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context.fillStyle = "#000000";
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context.fillText(prettyPrintTime(ii*timePerBlock + realStartTime), x + 5, height/2 + 5);
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}
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context.strokeStyle = "#525252";
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context.beginPath();
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context.moveTo(0, height-1);
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context.lineTo(width, height-1);
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context.stroke();
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}
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function clear()
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{
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requestPaint();
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}
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function prettyPrintTime( t )
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{
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var round = 1;
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var barrier = 1;
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var units = ["μs", "ms", "s"];
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for (var i = 0; i < units.length; ++i) {
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barrier *= 1000;
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if (zoomControl.rangeDuration < barrier)
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round *= 1000;
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else if (zoomControl.rangeDuration < barrier * 10)
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round *= 100;
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else if (zoomControl.rangeDuration < barrier * 100)
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round *= 10;
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if (t < barrier * 1000)
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return Math.floor(t / (barrier / round)) / round + units[i];
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}
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t /= barrier;
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var m = Math.floor(t / 60);
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var s = Math.floor((t - m * 60) * round) / round;
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return m + "m" + s + "s";
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}
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}
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