一般来说，图像轮播都是采用ListView等model进行设计， 比较方便。 这里展示我自己设计的图像轮播
方案， 仅采用两个QImage实现；
下面展示代码以及简述：(注： 以下代码为本人原创， 如需要应用于商业，请留言通知！）
import QtQuick 2.0
import QtQuick.Window 2.3
import QtQuick.Controls 1.4
import MaterialUI 1.0
import com.Advertisement 1.0
AppWindow{
id: adverpage;
flags:Qt.FramelessWindowHint;
bDomal: true;
x: (Screen.desktopAvailableWidth - width)/2;
y: (Screen.desktopAvailableHeight - height)/2; QtObject{
id:__inter;
property var advertises: adver.avertises;
property real index: -1;
property real time: 20; //广告时间； //找到下一个；
property var firstImg : img1.x == 0? img2: img1;
property var secondImg : img1.x == 0 ?img1: img2;
property var firstMove : img1.x == 0? img2Moving: img1Moving;
property var secondMove : img1.x == 0? img1Moving: img2Moving;
property var nextIndex: index+1 >= advertises.length ? 0: index + 1; //得到下一个序号；
} function play()
{
//初始化；
__inter.index++;
if( __inter.advertises.length >= 2)
{
if( Qt.platform.os == "windows")
{
img1.source = "file:///" + __inter.advertises[__inter.index];
img2.source = "file:///" + __inter.advertises[__inter.nextIndex];
}else{
img1.firstImg.source = __inter.advertises[__inter.index];
img2.source = __inter.advertises[__inter.nextIndex];
}
}
remainTime.text = __inter.time.toString() + " 秒";
timer.start();
} function stop()
{
timer.stop();
adverpage.close();
} function scroll()
{
__inter.time--; //时间更新；
remainTime.text = __inter.time.toString() + " 秒";
if( __inter.time > 0 )
{
console.log(__inter.advertises[__inter.index]);
if( Qt.platform.os == "windows")
{
__inter.secondImg.source = "file:///" + __inter.advertises[__inter.nextIndex]; //预存图像；
}else{
__inter.secondImg.source = __inter.advertises[__inter.nextIndex];
}
__inter.firstMove.from = 0;
__inter.firstMove.to = -__inter.firstImg.width;
__inter.secondMove.from = __inter.secondImg.width;
__inter.secondMove.to = 0;
__inter.firstMove.start();
__inter.secondMove.start();
}else{
timer.stop();
adverpage.close();
}
__inter.index = __inter.nextIndex; //下一个；
}
Rectangle{
id: scrollArea;
width: img1.x > img2.x? img1.width: img2.width;
height:Math.max(img1.height, img2.height);
clip: true;
Row{
spacing: Global.margin;
z: 2;
anchors{
top: parent.top;
topMargin: Global.margin;
right: parent.right;
rightMargin: Global.margin;
}
Label{ //倒计时以及“关闭广告”功能；
id: remainTime;
width: 50;
height: 20;
color: "red";
font.bold: true;
horizontalAlignment: Text.AlignRight
verticalAlignment: Text.AlignVCenter
}
Label{
width: 50;
height: 20;
color: "red";
font.bold: true;
horizontalAlignment: Text.AlignHCenter
verticalAlignment: Text.AlignVCenter
text:qsTr("关闭广告");
MouseArea{
anchors.fill: parent;
onClicked:{
console.log("no right to close");
stop();
}
}
}
} Image {
id:img1
cache: false;
x: 0;
anchors.verticalCenter: parent.verticalCenter;
NumberAnimation{
id: img1Moving;
target: img1
properties: "x"
duration: 300;
}
}
Image{
id: img2;
cache: false;
x: img1.width;
anchors.verticalCenter: parent.verticalCenter;
NumberAnimation{
id: img2Moving;
target: img2
properties: "x"
duration: 300;
}
} MouseArea{ //暂停功能；
anchors.fill: parent;
cursorShape: Qt.PointingHandCursor
onClicked: {
if( timer.running )
timer.stop();
else
timer.restart();
}
}
} Advertisement{ //从本地获取要展示的广告列表；
id: adver;
} Timer{ //定时器，用于轮播；
id: timer;
repeat: true;
interval: 1500;
onTriggered:{
scroll();
}
}
}