commit 29b7af41e263f777750e47de82b4d93a8c0b4850
parent 15bb17659c30ba8122e76da1967b1da304bc071a
Author: Alexandre BIQUE <bique.alexandre@gmail.com>
Date: Mon, 6 Sep 2021 18:30:33 +0200
style
Diffstat:
1 file changed, 114 insertions(+), 111 deletions(-)
diff --git a/examples/plugins/qml/clap/Knob.qml b/examples/plugins/qml/clap/Knob.qml
@@ -1,115 +1,118 @@
import QtQuick 2.1
Canvas {
- property QtObject param
- property int size: 20
- property string backgroundColor: "#222222";
- property string valueColor: "#ffffff";
- property string modulationColor: "#3344ff"
-
- id: knob
- width: size
- height: size
-
- property real lastY: 0
-
- Connections {
- target: param
- function onValueChanged() {
- knob.requestPaint();
- }
-
- function onModulationChanged() {
- knob.requestPaint();
- }
- }
-
- MouseArea {
- anchors.fill: parent
- drag.axis: Drag.YAxis
- property real lastY: 0
- onPressed: (mouse) => {
- if (mouse.button === Qt.LeftButton) {
- lastY = mouse.y;
- knob.param.isAdjusting = true;
- }
- }
- onReleased: (mouse) => {
- if (mouse.button === Qt.LeftButton) {
- knob.param.isAdjusting = false;
- }
- }
- onPositionChanged: (mouse) => {
- if (!(mouse.buttons & Qt.LeftButton))
- return;
- knob.param.normalizedValue += ((mouse.modifiers & Qt.ShiftModifier) ? 0.001 : 0.01) * (lastY - mouse.y);
- lastY = mouse.y;
- knob.requestPaint();
- }
- onDoubleClicked: (mouse) => {
- if (!(mouse.buttons & Qt.LeftButton))
- return;
- knob.param.value = knob.param.defaultValue;
- }
- }
-
- onPaint: {
- var ctx = getContext("2d");
-
- drawBackground(ctx);
- drawModulation(ctx);
- drawValue(ctx);
- }
-
- function drawBackground(ctx) {
- ctx.save()
-
- ctx.fillStyle = backgroundColor;
- ctx.strokeStyle = "black";
-
- ctx.beginPath();
- ctx.arc(size / 2, size / 2, size / 2, 0, 2 * Math.PI, false);
- ctx.fill();
- ctx.stroke();
-
- ctx.restore()
- }
-
- function drawModulation(ctx) {
- var radius = size / 15;
-
- ctx.save();
-
- ctx.translate(size / 2, size / 2);
-
- ctx.fillStyle = modulationColor;
- ctx.strokeStyle = "black";
-
- ctx.beginPath();
- ctx.rotate((param.normalizedModulation - .5) * Math.PI * 4 / 3);
- ctx.arc(0, -size / 2 + 2 * radius, radius, 0, 2 * Math.PI, false);
- ctx.fill();
- ctx.stroke();
-
- ctx.restore();
- }
-
- function drawValue(ctx) {
- var radius = size / 15;
-
- ctx.save();
-
- ctx.translate(size / 2, size / 2);
-
- ctx.fillStyle = valueColor;
- ctx.strokeStyle = "black";
-
- ctx.beginPath();
- ctx.rotate((param.normalizedValue - .5) * Math.PI * 4 / 3);
- ctx.arc(0, -size / 2 + 2 * radius, radius, 0, 2 * Math.PI, false);
- ctx.fill();
- ctx.stroke();
-
- ctx.restore();
- }
+ property QtObject param
+ property int size: 20
+ property string backgroundColor: "#222222";
+ property string valueColor: "#ffffff";
+ property string modulationColor: "#3344ff"
+
+ id: knob
+ width: size
+ height: size
+
+ property real lastY: 0
+
+ Connections {
+ target: param
+ function onValueChanged() {
+ knob.requestPaint();
+ }
+
+ function onModulationChanged() {
+ knob.requestPaint();
+ }
+ }
+
+ MouseArea {
+ anchors.fill: parent
+ drag.axis: Drag.YAxis
+ property real lastY: 0
+
+ onPressed: (mouse) => {
+ if (mouse.button === Qt.LeftButton) {
+ lastY = mouse.y;
+ knob.param.isAdjusting = true;
+ }
+ }
+
+ onReleased: (mouse) => {
+ if (mouse.button === Qt.LeftButton) {
+ knob.param.isAdjusting = false;
+ }
+ }
+
+ onPositionChanged: (mouse) => {
+ if (!(mouse.buttons & Qt.LeftButton))
+ return;
+ knob.param.normalizedValue += ((mouse.modifiers & Qt.ShiftModifier) ? 0.001 : 0.01) * (lastY - mouse.y);
+ lastY = mouse.y;
+ knob.requestPaint();
+ }
+
+ onDoubleClicked: (mouse) => {
+ if (mouse.button === Qt.LeftButton)
+ knob.param.value = knob.param.defaultValue;
+ }
+ }
+
+ onPaint: {
+ var ctx = getContext("2d");
+
+ drawBackground(ctx);
+ drawModulation(ctx);
+ drawValue(ctx);
+ }
+
+ function drawBackground(ctx) {
+ ctx.save()
+
+ ctx.fillStyle = backgroundColor;
+ ctx.strokeStyle = "black";
+
+ ctx.beginPath();
+ ctx.arc(size / 2, size / 2, size / 2, 0, 2 * Math.PI, false);
+ ctx.fill();
+ ctx.stroke();
+
+ ctx.restore()
+ }
+
+ function drawModulation(ctx) {
+ var radius = size / 15;
+
+ ctx.save();
+
+ ctx.translate(size / 2, size / 2);
+
+ ctx.fillStyle = modulationColor;
+ ctx.strokeStyle = "black";
+
+ ctx.beginPath();
+ ctx.rotate((param.normalizedModulation - .5) * Math.PI * 4 / 3);
+ ctx.arc(0, -size / 2 + 2 * radius, radius, 0, 2 * Math.PI, false);
+ ctx.fill();
+ ctx.stroke();
+
+ ctx.restore();
+ }
+
+ function drawValue(ctx) {
+ var radius = size / 15;
+
+ ctx.save();
+
+ ctx.translate(size / 2, size / 2);
+
+ ctx.fillStyle = valueColor;
+ ctx.strokeStyle = "black";
+
+ ctx.beginPath();
+ ctx.rotate((param.normalizedValue - .5) * Math.PI * 4 / 3);
+ ctx.arc(0, -size / 2 + 2 * radius, radius, 0, 2 * Math.PI, false);
+ ctx.fill();
+ ctx.stroke();
+
+ ctx.restore();
+ }
}
