photosurface.qml Example File
demos/photosurface/photosurface.qml/**************************************************************************** ** ** Copyright (C) 2015 The Qt Company Ltd. ** Contact: http://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** You may use this file under the terms of the BSD license as follows: ** ** "Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions are ** met: ** * Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** * Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in ** the documentation and/or other materials provided with the ** distribution. ** * Neither the name of The Qt Company Ltd nor the names of its ** contributors may be used to endorse or promote products derived ** from this software without specific prior written permission. ** ** ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ import QtQuick 2.6 import QtQuick.Dialogs 1.0 import QtQuick.Window 2.1 import Qt.labs.folderlistmodel 1.0 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 FileDialog { id: fileDialog title: "Choose a folder with some images" selectFolder: true folder: picturesLocation onAccepted: folderModel.folder = fileUrl + "/" } 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.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.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: fileDialog.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: fileDialog.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 == "") fileDialog.open(); else folderModel.folder = contextInitialUrl + "/"; } else { // Launched via QML viewer without context properties set. fileDialog.open(); } } property var imageNameFilters : ["*.png", "*.jpg", "*.gif"]; property string picturesLocation : ""; }