diff options
| -rw-r--r-- | examples/quick/threading/workerscript/Spinner.qml | 87 | ||||
| -rw-r--r-- | examples/quick/threading/workerscript/workerscript.js | 31 | ||||
| -rw-r--r-- | examples/quick/threading/workerscript/workerscript.qml | 56 |
3 files changed, 141 insertions, 33 deletions
diff --git a/examples/quick/threading/workerscript/Spinner.qml b/examples/quick/threading/workerscript/Spinner.qml new file mode 100644 index 0000000000..32ab248529 --- /dev/null +++ b/examples/quick/threading/workerscript/Spinner.qml @@ -0,0 +1,87 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +import QtQuick 2.0 + +Rectangle { + width: 64 + height: 64 + property alias value: list.currentIndex + property alias label: caption.text + + Text { + id: caption + text: "Spinner" + anchors.horizontalCenter: parent.horizontalCenter + } + + Rectangle { + anchors.top: caption.bottom + anchors.topMargin: 4 + anchors.horizontalCenter: parent.horizontalCenter + height: 48 + width: 32 + color: "black" + ListView { + id: list + anchors.fill: parent + highlightRangeMode: ListView.StrictlyEnforceRange + preferredHighlightBegin: height/3 + preferredHighlightEnd: height/3 + clip: true + model: 64 + delegate: Text { + font.pixelSize: 18; + color: "white"; + text: index; + anchors.horizontalCenter: parent.horizontalCenter + } + } + Rectangle { + anchors.fill: parent + gradient: Gradient { + GradientStop { position: 0.0; color: "#FF000000" } + GradientStop { position: 0.2; color: "#00000000" } + GradientStop { position: 0.8; color: "#00000000" } + GradientStop { position: 1.0; color: "#FF000000" } + } + } + } +} diff --git a/examples/quick/threading/workerscript/workerscript.js b/examples/quick/threading/workerscript/workerscript.js index f76471f920..ada3d82589 100644 --- a/examples/quick/threading/workerscript/workerscript.js +++ b/examples/quick/threading/workerscript/workerscript.js @@ -1,15 +1,24 @@ -var lastx = 0; -var lasty = 0; +//Will be initialized when WorkerScript{} is instantiated +var cache = new Array(64); +for (var i = 0; i < 64; i++) + cache[i] = new Array(64); -WorkerScript.onMessage = function(message) { - var ydiff = message.y - lasty; - var xdiff = message.x - lastx; - - var total = Math.sqrt(ydiff * ydiff + xdiff * xdiff); - - lastx = message.x; - lasty = message.y; +function triangle(row, column) { + if (cache[row][column]) + return cache[row][column] + if (column < 0 || column > row) + return -1; + if (column == 0 || column == row) + return 1; + return triangle(row-1, column-1) + triangle(row-1, column); +} - WorkerScript.sendMessage( {xmove: xdiff, ymove: ydiff, move: total} ); +WorkerScript.onMessage = function(message) { + //Calculate result (may take a while, using a naive algorithm) + var calculatedResult = triangle(message.row, message.column); + //Send result back to main thread + WorkerScript.sendMessage( { row: message.row, + column: message.column, + result: calculatedResult} ); } diff --git a/examples/quick/threading/workerscript/workerscript.qml b/examples/quick/threading/workerscript/workerscript.qml index 7fced8166c..640df0b483 100644 --- a/examples/quick/threading/workerscript/workerscript.qml +++ b/examples/quick/threading/workerscript/workerscript.qml @@ -41,43 +41,55 @@ import QtQuick 2.0 Rectangle { - width: 480; height: 320 + width: 320; height: 480 WorkerScript { id: myWorker source: "workerscript.js" onMessage: { - console.log("Moved " + messageObject.xmove + " along the X axis."); - console.log("Moved " + messageObject.ymove + " along the Y axis."); - console.log("Moved " + messageObject.move + " pixels."); + if (messageObject.row == rowSpinner.value && messageObject.column == columnSpinner.value){ //Not an old result + if (messageObject.result == -1) + resultText.text = "Column must be <= Row"; + else + resultText.text = messageObject.result; + } } } + Row { + y: 24 + spacing: 24 + anchors.horizontalCenter: parent.horizontalCenter + Spinner { + id: rowSpinner + label: "Row" + onValueChanged: { + resultText.text = "Loading..."; + myWorker.sendMessage( { row: rowSpinner.value, column: columnSpinner.value } ); + } + } - Rectangle { - width: 200; height: 200 - anchors.left: parent.left; anchors.leftMargin: 20 - color: "red" - - MouseArea { - anchors.fill: parent - onClicked: myWorker.sendMessage( { rectangle: "red", x: mouse.x, y: mouse.y } ); + Spinner { + id: columnSpinner + label: "Column" + onValueChanged: { + resultText.text = "Loading..."; + myWorker.sendMessage( { row: rowSpinner.value, column: columnSpinner.value } ); + } } } - Rectangle { - width: 200; height: 200 - anchors.right: parent.right; anchors.rightMargin: 20 - color: "blue" - - MouseArea { - anchors.fill: parent - onClicked: myWorker.sendMessage( { rectangle: "blue", x: mouse.x, y: mouse.y } ); - } + Text { + id: resultText + y: 180 + width: parent.width + horizontalAlignment: Text.AlignHCenter + wrapMode: Text.WordWrap + font.pixelSize: 32 } Text { - text: "Click a Rectangle!" + text: "Pascal's Triangle Calculator" anchors { horizontalCenter: parent.horizontalCenter; bottom: parent.bottom; bottomMargin: 50 } } } |