update

example/qml/window/MainWindow.qml

@@ -208,60 +208,12 @@ CustomWindow {
         }
     }
 
-    //todo
     CircularReveal{
+        id:reveal
+        target:window.contentItem
         anchors.fill: parent
-    }
-
-    Image{
-        id:img_cache
-        visible: false
-        anchors.fill: parent
-    }
-
-    Canvas{
-        id:canvas
-        anchors.fill: parent
-        property int centerX: canvas.width / 2
-        property int centerY: canvas.height / 2
-        property real radius: 0
-        property int maxRadius: 0
-        property url imageUrl
-        Behavior on radius{
-            id:anim_radius
-            NumberAnimation {
-                target: canvas
-                property: "radius"
-                duration: 333
-                easing.type: Easing.OutCubic
-            }
-        }
-        onRadiusChanged: {
-            canvas.requestPaint()
-        }
-        onPaint: {
-            var ctx = canvas.getContext("2d");
-            ctx.setTransform(1, 0, 0, 1, 0, 0);
-            ctx.clearRect(0, 0, canvasSize.width, canvasSize.height);
-            ctx.save()
-            if(img_cache.source.toString().length!==0){
-                try{
-                    ctx.drawImage(img_cache.source, 0, 0,  canvasSize.width, canvasSize.height, 0, 0,  canvasSize.width, canvasSize.height)
-                }catch(e){
-                    img_cache.source = ""
-                }
-            }
-            clearArc(ctx, centerX, centerY, radius)
-            canvas.unloadImage(img_cache.source)
-            ctx.restore()
-        }
-        function clearArc(ctx,x, y, radius, startAngle, endAngle) {
-            ctx.beginPath()
-            ctx.globalCompositeOperation = 'destination-out'
-            ctx.fillStyle = 'black'
-            ctx.arc(x, y, radius, 0, 2*Math.PI);
-            ctx.fill();
-            ctx.closePath();
+        onImageChanged: {
+            changeDark()
         }
     }
 
@@ -270,13 +222,6 @@ CustomWindow {
     }
 
     function handleDarkChanged(button){
-        var changeDark = function(){
-            if(FluTheme.dark){
-                FluTheme.darkMode = FluDarkMode.Light
-            }else{
-                FluTheme.darkMode = FluDarkMode.Dark
-            }
-        }
         if(FluTools.isMacos()){
             changeDark()
         }else{
@@ -284,18 +229,16 @@ CustomWindow {
             var pos = button.mapToItem(target,0,0)
             var mouseX = pos.x
             var mouseY = pos.y
-            canvas.maxRadius = Math.max(distance(mouseX,mouseY,0,0),distance(mouseX,mouseY,target.width,0),distance(mouseX,mouseY,0,target.height),distance(mouseX,mouseY,target.width,target.height))
-            target.grabToImage(function(result) {
-                img_cache.source = result.url
-                canvas.requestPaint()
-                changeDark()
-                canvas.centerX = mouseX
-                canvas.centerY = mouseY
-                anim_radius.enabled = false
-                canvas.radius = 0
-                anim_radius.enabled = true
-                canvas.radius = canvas.maxRadius
-            },canvas.canvasSize)
+            var radius = Math.max(distance(mouseX,mouseY,0,0),distance(mouseX,mouseY,target.width,0),distance(mouseX,mouseY,0,target.height),distance(mouseX,mouseY,target.width,target.height))
+            reveal.start(reveal.width*Screen.devicePixelRatio,reveal.height*Screen.devicePixelRatio,Qt.point(mouseX,mouseY),radius)
+        }
+    }
+
+    function changeDark(){
+        if(FluTheme.dark){
+            FluTheme.darkMode = FluDarkMode.Light
+        }else{
+            FluTheme.darkMode = FluDarkMode.Dark
         }
     }
 

example/src/component/CircularReveal.cpp

@@ -1,6 +1,47 @@
 #include "CircularReveal.h"
+#include <QGuiApplication>
+#include <QQuickItemGrabResult>
+#include <QPainterPath>
 
-CircularReveal::CircularReveal()
+CircularReveal::CircularReveal(QQuickItem* parent) : QQuickPaintedItem(parent)
 {
 
+    _anim = new QPropertyAnimation(this, "radius", this);
+    _anim->setDuration(333);
+    _anim->setEasingCurve(QEasingCurve::OutCubic);
+    connect(_anim, &QPropertyAnimation::finished,this,[=](){
+        setVisible(false);
+    });
+
+    connect(this,&CircularReveal::radiusChanged,this,[=](){
+        update();
+    });
+}
+
+void CircularReveal::paint(QPainter* painter)
+{
+    painter->save();
+    painter->drawImage(QRect(0, 0, static_cast<int>(width()), static_cast<int>(height())), _source);
+    QPainterPath path;
+    path.moveTo(_center.x(),_center.y());
+    path.addEllipse(QPointF(_center.x(),_center.y()), _radius, _radius);
+    painter->setCompositionMode(QPainter::CompositionMode_Clear);
+    painter->fillPath(path, Qt::black);
+    painter->restore();
+}
+
+void CircularReveal::start(int w,int h,const QPoint& center,int radius){
+    _anim->setStartValue(0);
+    _anim->setEndValue(radius);
+    _center = center;
+    _grabResult = _target->grabToImage(QSize(w,h));
+    connect(_grabResult.data(), &QQuickItemGrabResult::ready, this, &CircularReveal::handleGrabResult);
+}
+
+void CircularReveal::handleGrabResult(){
+    _grabResult.data()->image().swap(_source);
+    update();
+    setVisible(true);
+    Q_EMIT imageChanged();
+    _anim->start();
 }

example/src/component/CircularReveal.h

@@ -2,15 +2,28 @@
 #define CIRCULARREVEAL_H
 
 #include <QQuickItem>
+#include <QQuickPaintedItem>
+#include <QPainter>
+#include <QPropertyAnimation>
+#include "src/stdafx.h"
 
-class CircularReveal : public QQuickItem
+class CircularReveal : public QQuickPaintedItem
 {
     Q_OBJECT
+    Q_PROPERTY_AUTO(QQuickItem*,target)
+    Q_PROPERTY_AUTO(int,radius)
 public:
-    CircularReveal();
-
-signals:
+    CircularReveal(QQuickItem* parent = nullptr);
+    void paint(QPainter* painter) override;
 
+    Q_INVOKABLE void start(int w,int h,const QPoint& center,int radius);
+    Q_SIGNAL void imageChanged();
+    Q_SLOT void handleGrabResult();
+private:
+    QImage _source;
+    QPropertyAnimation* _anim;
+    QPoint _center;
+    QSharedPointer<QQuickItemGrabResult>  _grabResult;
 };
 
 #endif // CIRCULARREVEAL_H