Qt Quick Demo - Photo Surface▲
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import QtQuick
import QtQuick.Window
import Qt.labs.folderlistmodel
import Qt.labs.platform
Window {
id: root
visible: true
width: 1024; height: 600
color: "black"
property int highestZ: 0
property real defaultSize: 200
property var currentFrame: undefined
property real surfaceViewportRatio: 1.5
FolderDialog {
id: folderDialog
title: "Choose a folder with some images"
folder: picturesLocation
onAccepted: folderModel.folder = folder + "/"
}
Flickable {
id: flick
anchors.fill: parent
contentWidth: width * surfaceViewportRatio
contentHeight: height * surfaceViewportRatio
Repeater {
model: FolderListModel {
id: folderModel
objectName: "folderModel"
showDirs: false
nameFilters: imageNameFilters
}
Rectangle {
id: photoFrame
width: image.width * (1 + 0.10 * image.height / image.width)
height: image.height * 1.10
scale: defaultSize / Math.max(image.sourceSize.width, image.sourceSize.height)
Behavior on scale { NumberAnimation { duration: 200 } }
Behavior on x { NumberAnimation { duration: 200 } }
Behavior on y { NumberAnimation { duration: 200 } }
border.color: "black"
border.width: 2
smooth: true
antialiasing: true
Component.onCompleted: {
x = Math.random() * root.width - width / 2
y = Math.random() * root.height - height / 2
rotation = Math.random() * 13 - 6
}
Image {
id: image
anchors.centerIn: parent
fillMode: Image.PreserveAspectFit
source: folderModel.folder + fileName
antialiasing: true
}
PinchArea {
anchors.fill: parent
pinch.target: photoFrame
pinch.minimumRotation: -360
pinch.maximumRotation: 360
pinch.minimumScale: 0.1
pinch.maximumScale: 10
pinch.dragAxis: Pinch.XAndYAxis
onPinchStarted: setFrameColor();
property real zRestore: 0
onSmartZoom: {
if (pinch.scale > 0) {
photoFrame.rotation = 0;
photoFrame.scale = Math.min(root.width, root.height) / Math.max(image.sourceSize.width, image.sourceSize.height) * 0.85
photoFrame.x = flick.contentX + (flick.width - photoFrame.width) / 2
photoFrame.y = flick.contentY + (flick.height - photoFrame.height) / 2
zRestore = photoFrame.z
photoFrame.z = ++root.highestZ;
} else {
photoFrame.rotation = pinch.previousAngle
photoFrame.scale = pinch.previousScale
photoFrame.x = pinch.previousCenter.x - photoFrame.width / 2
photoFrame.y = pinch.previousCenter.y - photoFrame.height / 2
photoFrame.z = zRestore
--root.highestZ
}
}
MouseArea {
id: dragArea
hoverEnabled: true
anchors.fill: parent
drag.target: photoFrame
scrollGestureEnabled: false // 2-finger-flick gesture should pass through to the Flickable
onPressed: {
photoFrame.z = ++root.highestZ;
parent.setFrameColor();
}
onEntered: parent.setFrameColor();
onWheel: {
if (wheel.modifiers & Qt.ControlModifier) {
photoFrame.rotation += wheel.angleDelta.y / 120 * 5;
if (Math.abs(photoFrame.rotation) < 4)
photoFrame.rotation = 0;
} else {
photoFrame.rotation += wheel.angleDelta.x / 120;
if (Math.abs(photoFrame.rotation) < 0.6)
photoFrame.rotation = 0;
var scaleBefore = photoFrame.scale;
photoFrame.scale += photoFrame.scale * wheel.angleDelta.y / 120 / 10;
}
}
}
function setFrameColor() {
if (currentFrame)
currentFrame.border.color = "black";
currentFrame = photoFrame;
currentFrame.border.color = "red";
}
}
}
}
}
Rectangle {
id: verticalScrollDecorator
anchors.right: parent.right
anchors.margins: 2
color: "cyan"
border.color: "black"
border.width: 1
width: 5
radius: 2
antialiasing: true
height: flick.height * (flick.height / flick.contentHeight) - (width - anchors.margins) * 2
y: (flick.contentY - flick.originY) * (flick.height / flick.contentHeight)
NumberAnimation on opacity { id: vfade; to: 0; duration: 500 }
onYChanged: { opacity = 1.0; scrollFadeTimer.restart() }
}
Rectangle {
id: horizontalScrollDecorator
anchors.bottom: parent.bottom
anchors.margins: 2
color: "cyan"
border.color: "black"
border.width: 1
height: 5
radius: 2
antialiasing: true
width: flick.width * (flick.width / flick.contentWidth) - (height - anchors.margins) * 2
x: (flick.contentX - flick.originY) * (flick.width / flick.contentWidth)
NumberAnimation on opacity { id: hfade; to: 0; duration: 500 }
onXChanged: { opacity = 1.0; scrollFadeTimer.restart() }
}
Timer { id: scrollFadeTimer; interval: 1000; onTriggered: { hfade.start(); vfade.start() } }
Image {
anchors.top: parent.top
anchors.left: parent.left
anchors.margins: 10
source: "resources/folder.png"
MouseArea {
anchors.fill: parent
anchors.margins: -10
onClicked: folderDialog.open()
hoverEnabled: true
onPositionChanged: {
tooltip.visible = false
hoverTimer.start()
}
onExited: {
tooltip.visible = false
hoverTimer.stop()
}
Timer {
id: hoverTimer
interval: 1000
onTriggered: {
tooltip.x = parent.mouseX
tooltip.y = parent.mouseY
tooltip.visible = true
}
}
Rectangle {
id: tooltip
border.color: "black"
color: "beige"
width: tooltipText.implicitWidth + 8
height: tooltipText.implicitHeight + 8
visible: false
Text {
id: tooltipText
anchors.centerIn: parent
text: "Open an image directory (" + openShortcut.sequenceString + ")"
}
}
}
Shortcut {
id: openShortcut
sequence: StandardKey.Open
onActivated: folderDialog.open()
}
}
Text {
anchors.bottom: parent.bottom
anchors.left: parent.left
anchors.right: parent.right
anchors.margins: 10
color: "darkgrey"
wrapMode: Text.WordWrap
font.pointSize: 8
text: "On a touchscreen: use two fingers to zoom and rotate, one finger to drag\n" +
"With a mouse: drag normally, use the vertical wheel to zoom, horizontal wheel to rotate, or hold Ctrl while using the vertical wheel to rotate"
}
Shortcut { sequence: StandardKey.Quit; onActivated: Qt.quit() }
Component.onCompleted: {
if (typeof contextInitialUrl !== 'undefined') {
// Launched from C++ with context properties set.
imageNameFilters = contextImageNameFilters;
picturesLocation = contextPicturesLocation;
if (contextInitialUrl == "")
folderDialog.open();
else
folderModel.folder = contextInitialUrl + "/";
} else {
// Launched via QML viewer without context properties set.
folderDialog.open();
}
}
property var imageNameFilters : ["*.png", "*.jpg", "*.gif"];
property string picturesLocation : "";
}