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我想为非触摸应用程序实现CoverFlow。喜欢的东西: https://www.youtube.com/watch?v=0MT58xIzp5cQML Coverflow非常慢
我工作的基础知识,但有两个问题:
- 使用鼠标滚轮是比较轻弹非常慢,尤其是如果我滚动速度非常快。我怎样才能让
incrementCurrentIndex()
和decrementCurrentIndex()
的功能和轻弹一样快? - 从一个项目滚动到下一个项目时,我可以看到第二个白色背景(项目不会同时移动)。有没有办法解决这个问题?
这里是我的代码工作的例子:
import QtQuick 2.4
import QtQuick.Window 2.2
Window {
visible: true
width: 1280
height: 800
MouseArea {
//the mouse events will be replaced with c++ events later
anchors.fill: parent
onWheel: {
if (wheel.angleDelta.y < 0)
{
view.incrementCurrentIndex()
}
else if (wheel.angleDelta.y > 0)
{
view.decrementCurrentIndex()
}
}
}
PathView {
id: view
property int itemAngle: 40.0
property int itemSize: width/3.5
anchors.fill: parent
pathItemCount: 10
preferredHighlightBegin: 0.5
preferredHighlightEnd: 0.5
interactive: true
model: [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18]
delegate: viewDelegate
path: Path {
startX: 0
startY: height/2
PathPercent { value: 0.0 }
PathAttribute { name: "z"; value: 0 }
PathAttribute { name: "angle"; value: view.itemAngle }
PathAttribute { name: "origin"; value: 0 }
PathLine {x: view.width*0.4; y: view.height/2}
PathPercent { value: 0.48 }
PathAttribute { name: "angle"; value: view.itemAngle }
PathAttribute { name: "origin"; value: 0 }
PathAttribute { name: "z"; value: 10 }
PathLine { relativeX: 0; relativeY: 0 }
PathAttribute { name: "angle"; value: 0.0 }
PathAttribute { name: "origin"; value: 0 }
PathAttribute { name: "z"; value: 10 }
PathLine {x: view.width*0.6; y: view.height/2}
PathPercent { value: 0.52 }
PathAttribute { name: "angle"; value: 0.0 }
PathAttribute { name: "origin"; value: 0 }
PathAttribute { name: "z"; value: 10 }
PathLine { relativeX: 0; relativeY: 0 }
PathAttribute { name: "angle"; value: -view.itemAngle }
PathAttribute { name: "origin"; value: view.itemSize }
PathAttribute { name: "z"; value: 10 }
PathLine {x: view.width; y: view.height/2}
PathPercent { value: 1 }
PathAttribute { name: "angle"; value: -view.itemAngle }
PathAttribute { name: "origin"; value: view.itemSize }
PathAttribute { name: "z"; value: 0 }
}
}
Component {
id: viewDelegate
Rectangle {
id: flipItem
width: view.itemSize
height: view.height
color: "white"
z: PathView.z
property var rotationAngle: PathView.angle
property var rotationOrigin: PathView.origin
transform:
Rotation {
id: rot
axis { x: 0; y: 1; z: 0 }
angle: rotationAngle
origin.x: rotationOrigin
origin.y: width
}
Rectangle {
border.color: "black"
border.width: 2
color: (index%2 === 0) ? "yellow" : "royalblue"
anchors.top: flipItem.top
anchors.topMargin: 100
anchors.left: flipItem.left
anchors.right: flipItem.right
width: flipItem.width
height: flipItem.height*0.55
smooth: true
antialiasing: true
Text {
text: model.modelData
color: "gray"
font.pixelSize: 30
font.bold: true
anchors.centerIn: parent
}
}
}
}
}
我想达到的目标,是控制从C++侧(使用事件)的滚动和它尽可能快像弹与鼠标是。
@luffy欢迎您摆脱空白:) –