import QtQuick 2.11
Rectangle {
width: 640
height: 480
color: "#0ff90f"
Flipable {
id: flip
width: 300
height: 300
anchors.centerIn: parent
property bool flipped: false
front: Image{
anchors.fill: parent
source: "file:///C:/Users/Administrator/Desktop/11111/2099720.png"
transform: Rotation{
origin.x: flip.width / 2
origin.y: flip.height / 2
axis.x: 0
axis.y: 1
axis.z: 0
angle: 180
}
}
back: Image{
anchors.fill: parent
source: "file:///C:/Users/Administrator/Desktop/11111/2099720.png"
}
transform: Rotation{
id: rotation
origin.x: flip.width / 2
origin.y: flip.height / 2
axis.x: 0
axis.y: 1
axis.z: 0
angle: 0
}
states:State{
PropertyChanges {
target: rotation
angle: 180
}
when:flip.flipped
}
transitions: Transition{
NumberAnimation{
target:rotation
properties: "angle"
duration: 240
}
}
MouseArea {
anchors.fill: parent
onClicked: flip.flipped = !flip.flipped
}
}
}
import QtQuick 2.11
Rectangle {
width: 640
height: 480
color: "#0909ff"
Flipable {
id: flip
width: 300
height: 300
anchors.centerIn: parent
property bool flipped: false
front:Image{
anchors.fill: parent
source: "file:///C:/Users/Administrator/Desktop/11111/2099720.png"
}
back:Image{
anchors.fill: parent
source: "file:///C:/Users/Administrator/Desktop/11111/2099720-flip.png"
}
transform: Rotation{
id: rotation
origin.x: flip.width / 2
origin.y: flip.height / 2
axis.x: 0
axis.y: 1
axis.z: 0
angle: 0
}
states:State{
PropertyChanges {
target: rotation
angle: 180
}
when:flip.flipped
}
transitions: Transition{
NumberAnimation{
target:rotation
properties: "angle"
duration: 240
}
}
MouseArea {
anchors.fill: parent
onClicked: flip.flipped = !flip.flipped
}
}
}
int result = av_seek_frame(ffmpeg->formatCtx, -1,
(ffmpeg->formatCtx->start_time + time) * AV_TIME_BASE,
AVSEEK_FLAG_BACKWARD);
time单位为秒
import QtQuick 2.5
import QtQuick.Layouts 1.3
import QtQuick.Controls 1.4
import QtQuick.Controls.Styles 1.4
Rectangle {
width: 640
height: 480
color: "#333333"
Button {
id: button
text: "Button"
anchors.horizontalCenter: parent.horizontalCenter
anchors.top: parent.top
anchors.topMargin: 6
onClicked: {
var count = layout.count
if(layout.currentIndex == count - 1)
layout.currentIndex = 0
else
layout.currentIndex ++
}
}
StackLayout {
id: layout
anchors.top: button.bottom
anchors.topMargin: 6
anchors.horizontalCenter: parent.horizontalCenter
width: 480
height: 320
currentIndex: 1
Rectangle {
color: 'teal'
implicitWidth: 200
implicitHeight: 200
}
Rectangle {
color: 'plum'
implicitWidth: 300
implicitHeight: 200
}
Rectangle {
color: '#c90909'
implicitWidth: 300
implicitHeight: 200
}
Rectangle {
color: 'green'
implicitWidth: 300
implicitHeight: 200
}
Rectangle {
color: 'grey'
implicitWidth: 300
implicitHeight: 200
}
}
}
import QtQuick 2.5
import QtQuick.Layouts 1.2
import QtQuick.Controls 1.4
import QtQuick.Controls.Styles 1.4
Rectangle {
id: circularProgressBar
width: 60
height: 60
color: "#333333"
property real currentValue: 86
property bool textVisible: true
property bool canClick: false
Canvas {
id: canvas
anchors.fill: parent
antialiasing: true
property color primaryColor: "transparent"
property color secondaryColor: "lightblue"
property real centerWidth: width / 2
property real centerHeight: height / 2
property real radius: Math.min(canvas.width-10, canvas.height-10) / 2
property real minimumValue: 0
property real maximumValue: 100
property alias currentValue : circularProgressBar.currentValue
property string text: "0"
property real angle: (currentValue - minimumValue) / (maximumValue - minimumValue) * 2 * Math.PI
property real angleOffset: -Math.PI / 2
property real rotate: 0.0
onPrimaryColorChanged: requestPaint()
onSecondaryColorChanged: requestPaint()
onMinimumValueChanged: requestPaint()
onMaximumValueChanged: requestPaint()
onCurrentValueChanged: requestPaint()
onRotateChanged: requestPaint()
onPaint: {
var ctx = getContext("2d");
ctx.save();
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.translate(width/2,height/2)
ctx.rotate(rotate*Math.PI/180.0)
ctx.translate(-width/2,-height/2)
ctx.beginPath();
ctx.lineWidth = 10;
ctx.strokeStyle = primaryColor;
ctx.arc(canvas.centerWidth,
canvas.centerHeight,
canvas.radius,
angleOffset + canvas.angle,
angleOffset + 2*Math.PI);
ctx.stroke();
ctx.beginPath();
ctx.lineWidth = 3;
ctx.strokeStyle = canvas.secondaryColor;
ctx.arc(canvas.centerWidth,
canvas.centerHeight,
canvas.radius,
canvas.angleOffset,
canvas.angleOffset + canvas.angle);
ctx.stroke();
ctx.restore();
}
MouseArea {
id: mouseArea
anchors.fill: parent
visible: circularProgressBar.canClick
onClicked: canvas.clicked()
onPressedChanged: canvas.requestPaint()
}
Timer{
id: timer
interval: 150;
running: true
repeat: true;
onTriggered: {
canvas.rotate += 5
}
}
}
}
import QtQuick 2.11
import QtQuick.Controls 2.4
Rectangle
{
width:640
height:480
color:"#cfcfc0"
anchors.margins: 6
property bool load1: true
Button
{
id:button
text: "Button"
anchors.horizontalCenter: parent.horizontalCenter
onClicked:
{
if(area.visible)
fadeOut.start()
else
fadeIn.start()
}
}
PropertyAnimation
{
id: fadeOut
target: area
duration: 300
property: "opacity"
from: 1.0
to: 0.0
onStopped: area.visible = false
}
PropertyAnimation
{
id: fadeIn
target: area
duration: 300
property: "opacity"
from: 0.0
to: 1.0
onStarted: area.visible = true
}
Rectangle
{
id: area
width: parent.width - 12
height: parent.height - button.height - 12
anchors.horizontalCenter: parent.horizontalCenter
anchors.topMargin: 6
anchors.top: button.bottom
visible: false
color: "#9900ff00"
}
}
上层MouseArea需要接受右键事件，如下
MouseArea {
anchors.fill: parent
acceptedButtons: Qt.LeftButton | Qt.RightButton
}
import QtQuick 2.11
import QtQuick.Controls 2.4
Rectangle
{
width:640
height:480
color:"#cfcfc0"
anchors.margins: 6
MouseArea {
id: mouseRegion
anchors.fill: parent;
acceptedButtons: Qt.LeftButton | Qt.RightButton
onClicked: {
if(mouse.button == Qt.RightButton)
contentMenu.popup()
}
Menu {
id: contentMenu
MenuItem {
text: "Cut"
onTriggered: {}
}
MenuItem {
text: "Copy"
onTriggered: {}
}
MenuItem {
text: "Paste"
onTriggered: {}
}
MenuSeparator { }
Menu {
title: "More"
MenuItem {
text: "Edit"
}
MenuItem {
text: "Select All"
}
}
}
}
}
1 Button {
2 anchors.left: button
3 text: "菜单"
4 anchors.leftMargin: 12
5 onClicked: popupMenu.popup()
6 }
7
8 Menu {
9 id : popupMenu
10 title: "&File"
11
12 MenuItem {
13 text: "&Open"
14 onTriggered:{}
15 }
16
17 MenuItem {
18 text: "&Save"
19 onTriggered: {}
20 }
21
22 MenuItem {
23 text: "&Close"
24 onTriggered: Qt.quit()
25 }
26 }
import QtQuick 2.5
import QtQuick.Layouts 1.2
import QtQuick.Controls 1.4
import QtQuick.Controls.Styles 1.4
Rectangle {
id: circularProgressBar
width: 60
height: 60
color: "#333333"
property real currentValue: 0
property bool textVisible: true
property bool canClick: false
Canvas {
id: canvas
anchors.fill: parent
antialiasing: true
property color primaryColor: "transparent"
property color secondaryColor: "lightblue"
property real centerWidth: width / 2
property real centerHeight: height / 2
property real radius: Math.min(canvas.width-10, canvas.height-10) / 2
property real minimumValue: 0
property real maximumValue: 100
property alias currentValue : circularProgressBar.currentValue
property string text: "0"
property real angle: (currentValue - minimumValue) / (maximumValue - minimumValue) * 2 * Math.PI
property real angleOffset: -Math.PI / 2
onPrimaryColorChanged: requestPaint()
onSecondaryColorChanged: requestPaint()
onMinimumValueChanged: requestPaint()
onMaximumValueChanged: requestPaint()
onCurrentValueChanged: requestPaint()
onPaint: {
var ctx = getContext("2d");
ctx.save();
ctx.clearRect(0, 0, canvas.width, canvas.height);
if(mouseArea.pressed) {
ctx.beginPath();
ctx.lineWidth = 10;
ctx.fillStyle = Qt.lighter(canvas.secondaryColor,1.25);
ctx.arc(canvas.centerWidth,
canvas.centerHeight,
canvas.radius,
0,
2*Math.PI);
ctx.fill();
timer.running = true;
}
ctx.beginPath();
ctx.lineWidth = 10;
ctx.strokeStyle = primaryColor;
ctx.arc(canvas.centerWidth,
canvas.centerHeight,
canvas.radius,
angleOffset + canvas.angle,
angleOffset + 2*Math.PI);
ctx.stroke();
ctx.beginPath();
ctx.lineWidth = 3;
ctx.strokeStyle = canvas.secondaryColor;
ctx.arc(canvas.centerWidth,
canvas.centerHeight,
canvas.radius,
canvas.angleOffset,
canvas.angleOffset + canvas.angle);
ctx.stroke();
ctx.restore();
}
Text {
id: progressText
anchors.centerIn: parent
font.pixelSize: 16
text: canvas.text
visible: circularProgressBar.textVisible
color: canvas.secondaryColor
}
MouseArea {
id: mouseArea
anchors.fill: parent
visible: circularProgressBar.canClick
onClicked: canvas.clicked()
onPressedChanged: canvas.requestPaint()
}
Timer{
id: timer
interval: 100;
running: true
repeat: true;
onTriggered: {
if(circularProgressBar.currentValue === 100) {
circularProgressBar.currentValue = 0;
progressText.text = "0"
}
circularProgressBar.currentValue += 1;
progressText.text = circularProgressBar.currentValue.toString()+"%";
}
}
}
}