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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
import QtQuick
import QtQuick.Controls
import QtQuick.Layouts
import QtQuick.Shapes
Rectangle {
id: root
width: 1024
height: 768
color: palette.window
RowLayout {
id: topRow
x: 20
y: 10
spacing: 20
ButtonGroup {
id: toolButtons
buttons: drawingTools.children
}
RowLayout {
id: drawingTools
ToolButton {
text: qsTr("Line")
checkable: true
checked: true
property Component shapeType: Component {
ShapePath {
id: lineShapePath
strokeColor: root.palette.windowText
strokeWidth: widthSlider.value
fillColor: "transparent"
PathLine {
id: pathSegment
x: lineShapePath.startX + 1
y: lineShapePath.startY + 1
}
function finishCreation() {
createStartEndHandles(this, pathSegment);
}
}
}
}
ToolButton {
text: qsTr("Quadratic")
checkable: true
property Component shapeType: Component {
ShapePath {
id: quadShapePath
strokeColor: root.palette.windowText
strokeWidth: widthSlider.value
fillColor: fillSwitch.checked ? "green" : "transparent"
PathQuad {
id: pathSegment
x: quadShapePath.startx + 1
y: quadShapePath.startY + 1
controlX: quadShapePath.startX + 50
controlY: quadShapePath.startY + 50
}
function finishCreation() {
createStartEndHandles(this, pathSegment);
pointDragHandle.createObject(canvas, {
idleColor: "blue",
target: pathSegment, xprop: "controlX", yprop: "controlY"
});
}
}
}
}
ToolButton {
text: qsTr("Cubic")
checkable: true
property Component shapeType: Component {
ShapePath {
id: cubicShapePath
strokeColor: root.palette.windowText
strokeWidth: widthSlider.value
fillColor: fillSwitch.checked ? "green" : "transparent"
PathCubic {
id: pathSegment
x: cubicShapePath.startX + 1
y: cubicShapePath.startY + 1
control1X: cubicShapePath.startX + 50;
control1Y: cubicShapePath.startY + 50;
control2X: cubicShapePath.startX + 150;
control2Y: cubicShapePath.startY + 50;
}
function finishCreation() {
createStartEndHandles(this, pathSegment);
pointDragHandle.createObject(canvas, {
idleColor: "blue",
target: pathSegment, xprop: "control1X", yprop: "control1Y"
});
pointDragHandle.createObject(canvas, {
idleColor: "lightBlue",
target: pathSegment, xprop: "control2X", yprop: "control2Y"
});
}
}
}
}
}
Label {
text: qsTr("Width")
}
Slider {
id: widthSlider
from: 1
to: 60
value: 4
}
Switch {
id: showHandlesSwitch
text: qsTr("Handles")
}
Switch {
id: fillSwitch
text: qsTr("Fill")
}
}
Component {
id: pointDragHandle
Rectangle {
id: rect
property variant target
property string xprop
property string yprop
property color idleColor: "red"
width: 20
height: width
visible: showHandlesSwitch.checked
color: hh.hovered ? "yellow" : idleColor
border.color: "grey"
property real halfWidth: width / 2
property bool complete: false
Binding { target: rect.target; property: xprop; value: x + halfWidth; when: complete }
Binding { target: rect.target; property: yprop; value: y + halfWidth; when: complete }
DragHandler { }
HoverHandler { id: hh }
Component.onCompleted: {
x = target[xprop] - halfWidth;
y = target[yprop] - halfWidth;
complete = true;
}
}
}
function createStartEndHandles(shapePath, pathSegment) {
pointDragHandle.createObject(canvas, {
idleColor: "red",
target: shapePath, xprop: "startX", yprop: "startY"
});
pointDragHandle.createObject(canvas, {
idleColor: "red",
target: pathSegment, xprop: "x", yprop: "y"
});
}
Rectangle {
id: canvas
color: palette.base
width: root.width - 40
height: root.height - y - 20
x: 20
anchors.top: topRow.bottom
anchors.topMargin: 20
DragHandler {
target: null
grabPermissions: DragHandler.TakeOverForbidden
property ShapePath activePath: null
onActiveChanged: {
const tool = toolButtons.checkedButton;
if (active) {
activePath = tool.shapeType.createObject(root, {
startX: centroid.position.x, startY: centroid.position.y
});
shape.data.push(activePath);
} else {
activePath.finishCreation();
activePath = null;
}
}
onCentroidChanged: if (activePath) {
var pathObj = activePath.pathElements[0];
pathObj.x = centroid.position.x;
pathObj.y = centroid.position.y;
}
}
Shape {
id: shape
anchors.fill: parent
}
}
}
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