interactive.qml Example File | Qt Quick 5.12.11

- Qt 5.12
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- Qt Quick Examples - Shapes
- interactive.qml Example File
- Qt 5.12.11 Reference Documentation

# interactive.qml Example File

shapes/content/interactive.qml

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     import QtQuick 2.9
     import QtQuick.Shapes 1.0

     Rectangle {
         id: root
         width: 1024
         height: 768

         property color col: "lightsteelblue"
         gradient: Gradient {
             GradientStop { position: 0.0; color: Qt.tint(root.col, "#20FFFFFF") }
             GradientStop { position: 0.1; color: Qt.tint(root.col, "#20AAAAAA") }
             GradientStop { position: 0.9; color: Qt.tint(root.col, "#20666666") }
             GradientStop { position: 1.0; color: Qt.tint(root.col, "#20000000") }
         }

         property int mode: 0
         property bool showResizers: true
         property bool fill: false

         Row {
             x: 20
             y: 10
             spacing: 20
             Rectangle {
                 border.color: "black"
                 color: root.mode === 0 ? "red" : "transparent"
                 width: 100
                 height: 40
                 Text {
                     anchors.centerIn: parent
                     text: "Line"
                 }
                 MouseArea {
                     anchors.fill: parent
                     onClicked: root.mode = 0
                 }
             }
             Rectangle {
                 border.color: "black"
                 color: root.mode === 1 ? "red" : "transparent"
                 width: 100
                 height: 40
                 Text {
                     anchors.centerIn: parent
                     text: "Cubic"
                 }
                 MouseArea {
                     anchors.fill: parent
                     onClicked: root.mode = 1
                 }
             }
             Rectangle {
                 border.color: "black"
                 color: root.mode === 2 ? "red" : "transparent"
                 width: 100
                 height: 40
                 Text {
                     anchors.centerIn: parent
                     text: "Quadratic"
                 }
                 MouseArea {
                     anchors.fill: parent
                     onClicked: root.mode = 2
                 }
             }

             Slider {
                 id: widthSlider
                 name: "Width"
                 min: 1
                 max: 60
                 init: 4
             }

             Rectangle {
                 border.color: "black"
                 color: root.showResizers ? "yellow" : "transparent"
                 width: 50
                 height: 40
                 Text {
                     anchors.centerIn: parent
                     text: "Manip"
                 }
                 MouseArea {
                     anchors.fill: parent
                     onClicked: {
                         root.showResizers = !root.showResizers;
                         for (var i = 0; i < canvas.resizers.length; ++i)
                             canvas.resizers[i].visible = root.showResizers;
                     }
                 }
             }

             Rectangle {
                 border.color: "black"
                 color: root.fill ? "yellow" : "transparent"
                 width: 50
                 height: 40
                 Text {
                     anchors.centerIn: parent
                     text: "Fill"
                 }
                 MouseArea {
                     anchors.fill: parent
                     onClicked: root.fill = !root.fill
                 }
             }
         }

         Rectangle {
             id: canvas
             width: root.width - 40
             height: root.height - 120
             x: 20
             y: 100

             property variant activePath: null

             property variant resizers: []
             property variant funcs

             function genResizer(obj, x, y, xprop, yprop, color) {
                 var ma = Qt.createQmlObject('import QtQuick 2.9; import QtQuick.Shapes 1.0; Rectangle { id: rr; property variant obj; color: "' + color + '"; width: 20; height: 20;'+
                                              'MouseArea { anchors.fill: parent; hoverEnabled: true;' +
                                              'onEntered: color = "yellow"; onExited: color = "' + color + '";' +
                                              'property bool a: false; onPressed: a = true; onReleased: a = false; ' +
                                              'onPositionChanged: if (a) { var pt = mapToItem(rr.parent, mouse.x, mouse.y);' +
                                              'obj.' + xprop + ' = pt.x; obj.' + yprop + ' = pt.y; rr.x = pt.x - 10; rr.y = pt.y - 10; } } }',
                                              canvas, "resizer_item");
                 ma.visible = root.showResizers;
                 ma.obj = obj;
                 ma.x = x - 10;
                 ma.y = y - 10;
                 resizers.push(ma);
                 return ma;
             }

             Component.onCompleted: {
                 funcs = [
                             { "start": function(x, y) {
                                 var p = Qt.createQmlObject('import QtQuick 2.9; import QtQuick.Shapes 1.0; ShapePath {' +
                                                            'strokeColor: "black"; fillColor: "transparent";'+
                                                            'strokeWidth: ' + widthSlider.value + ';' +
                                                            'startX: ' + x + '; startY: ' + y + ';' +
                                                            'PathLine { x: ' + x + ' + 1; y: ' + y + ' + 1 } }',
                                                            root, "dynamic_visual_path");
                                 shape.data.push(p);
                                 activePath = p;
                             }, "move": function(x, y) {
                                 if (!activePath)
                                     return;
                                 var pathObj = activePath.pathElements[0];
                                 pathObj.x = x;
                                 pathObj.y = y;
                             }, "end": function() {
                                 canvas.genResizer(activePath, activePath.startX, activePath.startY, "startX", "startY", "red");
                                 var pathObj = activePath.pathElements[0];
                                 canvas.genResizer(pathObj, pathObj.x, pathObj.y, "x", "y", "red");
                                 activePath = null;
                             }
                             },
                             { "start": function(x, y) {
                                 var p = Qt.createQmlObject('import QtQuick 2.9; import QtQuick.Shapes 1.0; ShapePath {' +
                                                            'strokeColor: "black"; fillColor: "' + (root.fill ? 'green' : 'transparent') + '";'+
                                                            'strokeWidth: ' + widthSlider.value + ';' +
                                                            'startX: ' + x + '; startY: ' + y + ';' +
                                                            'PathCubic { x: ' + x + ' + 1; y: ' + y + ' + 1;' +
                                                            'control1X: ' + x + ' + 50; control1Y: ' + y + ' + 50; control2X: ' + x + ' + 150; control2Y: ' + y + ' + 50; } }',
                                                            root, "dynamic_visual_path");
                                 shape.data.push(p);
                                 activePath = p;
                             }, "move": function(x, y) {
                                 if (!activePath)
                                     return;
                                 var pathObj = activePath.pathElements[0];
                                 pathObj.x = x;
                                 pathObj.y = y;
                             }, "end": function() {
                                 canvas.genResizer(activePath, activePath.startX, activePath.startY, "startX", "startY", "red");
                                 var pathObj = activePath.pathElements[0];
                                 canvas.genResizer(pathObj, pathObj.x, pathObj.y, "x", "y", "red");
                                 canvas.genResizer(pathObj, pathObj.control1X, pathObj.control1Y, "control1X", "control1Y", "blue");
                                 canvas.genResizer(pathObj, pathObj.control2X, pathObj.control2Y, "control2X", "control2Y", "lightBlue");
                                 activePath = null;
                             }
                             },
                             { "start": function(x, y) {
                                 var p = Qt.createQmlObject('import QtQuick 2.9; import QtQuick.Shapes 1.0; ShapePath {' +
                                                            'strokeColor: "black"; fillColor: "' + (root.fill ? 'green' : 'transparent') + '";'+
                                                            'strokeWidth: ' + widthSlider.value + ';' +
                                                            'startX: ' + x + '; startY: ' + y + ';' +
                                                            'PathQuad { x: ' + x + ' + 1; y: ' + y + ' + 1;' +
                                                            'controlX: ' + x + ' + 50; controlY: ' + y + ' + 50 } }',
                                                            root, "dynamic_visual_path");
                                 shape.data.push(p);
                                 activePath = p;
                             }, "move": function(x, y) {
                                 if (!activePath)
                                     return;
                                 var pathObj = activePath.pathElements[0];
                                 pathObj.x = x;
                                 pathObj.y = y;
                             }, "end": function() {
                                 canvas.genResizer(activePath, activePath.startX, activePath.startY, "startX", "startY", "red");
                                 var pathObj = activePath.pathElements[0];
                                 canvas.genResizer(pathObj, pathObj.x, pathObj.y, "x", "y", "red");
                                 canvas.genResizer(pathObj, pathObj.controlX, pathObj.controlY, "controlX", "controlY", "blue");
                                 activePath = null;
                             }
                             }
                         ];
             }

             MouseArea {
                 anchors.fill: parent
                 onPressed: {
                     canvas.funcs[root.mode].start(mouse.x, mouse.y);
                 }
                 onPositionChanged: {
                     canvas.funcs[root.mode].move(mouse.x, mouse.y);
                 }
                 onReleased: {
                     canvas.funcs[root.mode].end();
                 }
             }

             Shape {
                 id: shape
                 anchors.fill: parent

                 data: []
             }
         }
     }