| /**************************************************************************** |
| ** |
| ** Copyright (C) 2020 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the manual tests of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:BSD$ |
| ** 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 The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** BSD License Usage |
| ** Alternatively, 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 The Qt Company Ltd 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 2.15 |
| import QtQuick.Layouts 1.15 |
| import "content" |
| |
| Rectangle { |
| width: 1024 |
| height: 1024 |
| color: "#444" |
| |
| ColumnLayout { |
| x: -15; width: 80 |
| height: parent.height |
| Slider { |
| id: hueSlider |
| width: 80; height: 200 |
| Layout.fillHeight: true |
| label: "hue" |
| Rectangle { |
| color: "beige" |
| width: 30 |
| height: 25 |
| anchors.bottom: parent.bottom |
| anchors.bottomMargin: 2 |
| anchors.horizontalCenter: parent.horizontalCenter |
| Rectangle { |
| border.color: "white" |
| color: canvas.drawingColor |
| anchors.fill: parent |
| } |
| } |
| } |
| Slider { |
| id: saturationSlider |
| width: 80; height: 200 |
| Layout.fillHeight: true |
| label: "sat" |
| } |
| Slider { |
| id: lightnessSlider |
| width: 80; height: 200 |
| Layout.fillHeight: true |
| label: "light" |
| } |
| } |
| |
| ColumnLayout { |
| x: parent.width - 65; width: 80 |
| height: parent.height |
| Slider { |
| id: widthSlider |
| width: 80; height: 200 |
| Layout.fillHeight: true |
| label: "width" |
| } |
| Slider { |
| id: alphaSlider |
| width: 80; height: 200 |
| Layout.fillHeight: true |
| label: "alpha" |
| } |
| } |
| |
| Rectangle { |
| id: rect |
| width: 640 |
| height: 480 |
| color: "beige" |
| anchors { |
| fill: parent |
| margins: 10 |
| leftMargin: 50 |
| rightMargin: 50 |
| } |
| |
| Canvas { |
| id: canvas |
| anchors.fill: parent |
| antialiasing: true |
| renderTarget: Canvas.FramebufferObject |
| property color drawingColor: Qt.hsla(hueSlider.value / 100.0, |
| saturationSlider.value / 100.0, |
| lightnessSlider.value / 100.0, |
| alphaSlider.value / 100.0) |
| property var points: [] |
| property var pressures: [] |
| property var pointerType: PointerDevice.Pen |
| onPaint: { |
| if (points.length < 2) |
| return |
| var ctx = canvas.getContext('2d'); |
| ctx.save() |
| ctx.strokeStyle = pointerType === PointerDevice.Pen ? drawingColor : "beige" |
| ctx.lineCap = "round" |
| if (pressures.length === points.length) { |
| for (var i = 1; i < points.length; i++) { |
| ctx.lineWidth = pressures[i] * widthSlider.value |
| ctx.beginPath() |
| ctx.moveTo(points[i - 1].x, points[i - 1].y) |
| ctx.lineTo(points[i].x, points[i].y) |
| ctx.stroke() |
| } |
| points = points.slice(points.length - 2, 1) |
| pressures = pressures.slice(pressures.length - 2, 1) |
| } else { |
| ctx.beginPath() |
| ctx.moveTo(points[0].x, points[0].y) |
| for (var i = 1; i < points.length; i++) |
| ctx.lineTo(points[i].x, points[i].y) |
| ctx.lineWidth = widthSlider |
| ctx.stroke() |
| points = points.slice(points.length - 2, 1) |
| pressures = [] |
| } |
| ctx.restore() |
| } |
| } |
| |
| PointHandler { |
| acceptedPointerTypes: PointerDevice.Pen |
| onActiveChanged: |
| if (active) { |
| canvas.pointerType = PointerDevice.Pen |
| } else { |
| canvas.points = [] |
| canvas.pressures = [] |
| } |
| onPointChanged: |
| if (active) { |
| canvas.points.push(point.position) |
| canvas.pressures.push(point.pressure) |
| canvas.requestPaint() |
| } |
| } |
| |
| PointHandler { |
| acceptedPointerTypes: PointerDevice.Eraser |
| onActiveChanged: |
| if (active) { |
| canvas.pointerType = PointerDevice.Eraser |
| } else { |
| canvas.points = [] |
| canvas.pressures = [] |
| } |
| onPointChanged: |
| if (active) { |
| canvas.points.push(point.position) |
| canvas.pressures.push(point.pressure) |
| canvas.requestPaint() |
| } |
| } |
| |
| HoverHandler { |
| id: stylusHandler |
| acceptedDevices: PointerDevice.Stylus |
| acceptedPointerTypes: PointerDevice.Pen |
| target: Image { |
| parent: rect |
| source: stylusHandler.point.rotation === 0 ? |
| "resources/cursor-pencil.png" : "resources/cursor-felt-marker.png" |
| visible: stylusHandler.hovered |
| rotation: stylusHandler.point.rotation |
| x: stylusHandler.point.position.x |
| y: stylusHandler.point.position.y |
| } |
| } |
| |
| HoverHandler { |
| id: airbrushHandler |
| acceptedDevices: PointerDevice.Airbrush |
| acceptedPointerTypes: PointerDevice.Pen |
| target: Image { |
| parent: rect |
| source: "resources/cursor-airbrush.png" |
| visible: airbrushHandler.hovered |
| x: airbrushHandler.point.position.x |
| y: airbrushHandler.point.position.y |
| } |
| } |
| |
| HoverHandler { |
| id: eraserHandler |
| acceptedPointerTypes: PointerDevice.Eraser |
| target: Image { |
| parent: rect |
| source: "resources/cursor-eraser.png" |
| visible: eraserHandler.hovered |
| x: eraserHandler.point.position.x |
| y: eraserHandler.point.position.y - 32 |
| } |
| } |
| } |
| } |