C语言

Qt Quick Ultralite 图像解码示例

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import QtQuick 2.15 Rectangle { property bool leftImageToggle: false property bool rightImageToggle: false property bool flipSides: false Row { anchors.verticalCenter: parent.verticalCenter Column { Text { anchors.horizontalCenter: parent.horizontalCenter font.pixelSize: 12 text: " Jpeg Images from flash" } Image { width: 240 height: 144 fillMode: Image.PreserveAspectFit //Below images are stored as assets in flash memory source: leftImageToggle? "grand-canyon-arizona.jpg" : "sequoia-national-park.jpg" } } Column { Text { anchors.horizontalCenter: parent.horizontalCenter font.pixelSize: 12 text: "Jpeg images from filesystem" } Image { width: 240 height: 144 fillMode: Image.PreserveAspectFit //Below images must be present on SD Card root folder for embedded platforms. source: rightImageToggle?"file://basse-terre-guadeloupe.jpg" : "file://yosemite-national-park.jpg" } } } Timer { interval: 500 repeat: true running: true onTriggered: { if(flipSides) leftImageToggle = !leftImageToggle else rightImageToggle = !rightImageToggle flipSides = !flipSides } } }