目录1.Popup介绍2.自定义Popup1.Popup介绍 Popup是一个弹出窗口的控件 它的常用属性如下所示: anchors.centerIn : Object,用
Popup是一个弹出窗口的控件
它的常用属性如下所示:
它的信号如下所示:
它的方法如下所示:
然后我们来自定义实现一个带指标的popup弹出窗口.
由于Popup的锚布局只有一个anchors.centerIn,假如们想让Popup位于某个控件的左上方时,必须得自定义一个.
实现截图如下所示(已上传群里):
实现效果如下所示:
首先我们需要实现horizontalPosBase和verticalPosBase两个属性.来实现Popup位于目标对象的哪个方位.
由于我们已经知道了方位,那么指标的坐标也就可以自动计算出来了.
具体实现代码如下所示:
// 指示器方向,根据horizontalPosBase和verticalPosBase 自动计算
enum IndicatorStyle {
IndicatorLeft,
IndicatorRight,
IndicatorTop,
IndicatorBottom
}
function updateIndicatorPos(indicatorStyle) {
switch (indicatorStyle)
{
case IndicatorPopup.IndicatorLeft:
indicator.x = - indicator.width*0.4;
indicator.y = back.height <= myTarget.height ? (back.height)/2-indicatorLen :
verticalPosBase === IndicatorPopup.TopAlign ? (myTarget.height)/2 -indicatorLen :
verticalPosBase === IndicatorPopup.VerticalAlign ? (back.height)/2 -indicatorLen :
back.height - (myTarget.height)/2 -indicatorLen;
break;
case IndicatorPopup.IndicatorRight:
indicator.x = width - indicator.width*1.2;
indicator.y = back.height <= myTarget.height ? (back.height)/2-indicatorLen :
verticalPosBase === IndicatorPopup.TopAlign ? (myTarget.height)/2 -indicatorLen :
verticalPosBase === IndicatorPopup.VerticalAlign ? (back.height)/2 -indicatorLen :
back.height - (myTarget.height)/2 -indicatorLen;
break;
case IndicatorPopup.IndicatorTop:
indicator.x = back.width <= myTarget.width ? (back.width)/2-indicatorLen :
horizontalPosBase === IndicatorPopup.PosBaseToRight ? (myTarget.width)/2 -indicatorLen :
horizontalPosBase === IndicatorPopup.PosBaseToHorizontal ? (back.width)/2 -indicatorLen :
back.width - (myTarget.width)/2 -indicatorLen;
indicator.y = - indicator.width*0.4;
break;
case IndicatorPopup.IndicatorBottom:
indicator.x = back.width <= myTarget.width ? (back.width)/2-indicatorLen :
horizontalPosBase === IndicatorPopup.PosBaseToRight ? (myTarget.width)/2 -indicatorLen :
horizontalPosBase === IndicatorPopup.PosBaseToHorizontal ? (back.width)/2 -indicatorLen :
back.width - (myTarget.width)/2 -indicatorLen;
indicator.y = height - indicator.height*1.2;
break;
}
console.log("indicator",indicator.x,indicator.y,indicator.width,indicator.height)
}
function updatePopupPos() {
var indicatorStyle;
switch (horizontalPosBase)
{
case IndicatorPopup.PosBaseToLeft: // popup位于目标水平左侧
x = myTarget.x - width - targetSpacing;
y = verticalPosBase === IndicatorPopup.TopAlign ? myTarget.y :
verticalPosBase === IndicatorPopup.VerticalAlign ? myTarget.y + myTarget.height/2 - height/2 :
myTarget.y - height + myTarget.height
indicatorStyle = IndicatorPopup.IndicatorRight;
break;
case IndicatorPopup.PosBaseToHorizontal: // popup水平中间
x = myTarget.x + myTarget.width/2 - width/2;
y = verticalPosBase === IndicatorPopup.PosBaseToTop ? myTarget.y - height - targetSpacing :
verticalPosBase === IndicatorPopup.PosBaseToBottom ? myTarget.y + myTarget.height + targetSpacing :
myTarget.y + myTarget.height + targetSpacing
indicatorStyle = verticalPosBase === IndicatorPopup.PosBaseToTop ? IndicatorPopup.IndicatorBottom :
IndicatorPopup.IndicatorTop;
break;
case IndicatorPopup.PosBaseToRight: // popup位于目标水平右侧
x = myTarget.x + myTarget.width + targetSpacing;
y = verticalPosBase === IndicatorPopup.TopAlign ? myTarget.y :
verticalPosBase === IndicatorPopup.VerticalAlign ? myTarget.y + myTarget.height/2 - height/2 :
myTarget.y - height + myTarget.height
indicatorStyle = IndicatorPopup.IndicatorLeft
console.log("PosBaseToRight",x,y,indicatorStyle);
break;
}
back.anchors.leftMargin = indicatorStyle === IndicatorPopup.IndicatorLeft ? indicatorLen : 0
back.anchors.rightMargin = indicatorStyle === IndicatorPopup.IndicatorRight ? indicatorLen : 0
back.anchors.bottomMargin = indicatorStyle === IndicatorPopup.IndicatorBottom ? indicatorLen : 0
back.anchors.topMargin = indicatorStyle === IndicatorPopup.IndicatorTop ? indicatorLen : 0
leftPadding = indicatorStyle === IndicatorPopup.IndicatorLeft ? indicatorLen : 0
rightPadding = indicatorStyle === IndicatorPopup.IndicatorRight ? indicatorLen : 0
bottomPadding = indicatorStyle === IndicatorPopup.IndicatorBottom ? indicatorLen : 0
topPadding = indicatorStyle === IndicatorPopup.IndicatorTop ? indicatorLen : 0
console.log(x,y,indicatorStyle);
updateIndicatorPos(indicatorStyle);
}
比如我们想让这个popup位于目标的左侧,顶部对齐,就可以这样写(无需指定popup的X,Y坐标了):
Button {
id: btn
text: "水平左侧-顶部对齐"
onClicked: {
popup.backgroundColor = "#12B7F5"
popup.horizontalPosBase = IndicatorPopup.PosBaseToLeft
popup.verticalPosBase = IndicatorPopup.TopAlign
popup.indicatorOpen(btn)
}
}
IndicatorPopup {
id: popup
width : 180
height: 200
modal: false
focus: true
parent: Overlay.overlay // Overlay.overlay表示主窗口的意思,附加到任何的item、popup中,避免当前界面不是主界面的情况,无法显示弹出窗口
TextArea {
anchors.fill: parent
text: "1234567890"
color: "#FFF"
font.pixelSize: 14
font.family: "Microsoft Yahei"
wrapMode: TextEdit.WrapAnywhere
}
closePolicy: Popup.CloseOnEscape | Popup.CloseOnPressOutside
}
如果我们使用模态的弹出窗口,并且想设置弹出窗口外的背景色,可以设置Overlay.modal附加属性,比如设置为谈红色:
Overlay.modal: Rectangle {
color: "#aaffdbe7"
}
效果如下所示:
到此这篇关于QT quick-Popup弹出窗口自定义的实现的文章就介绍到这了,更多相关QT quick-Popup弹出窗口内容请搜索编程网以前的文章或继续浏览下面的相关文章希望大家以后多多支持编程网!
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本文标题: QT quick-Popup弹出窗口自定义的实现
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