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comparison mupdf-source/thirdparty/zxing-cpp/example/ZXingQt5CamReader.qml @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 /*
2 * Copyright 2020 Axel Waggershauser
3 */
4 // SPDX-License-Identifier: Apache-2.0
5
6 import QtQuick 2.12
7 import QtQuick.Window 2.12
8 import QtQuick.Controls 2.5
9 import QtQuick.Layouts 1.12
10 import QtQuick.Shapes 1.12
11 import QtMultimedia 5.12
12 import ZXing 1.0
13
14 Window {
15 visible: true
16 width: 640
17 height: 480
18 title: Qt.application.name
19
20 property var nullPoints: [Qt.point(0,0), Qt.point(0,0), Qt.point(0,0), Qt.point(0,0)]
21 property var points: nullPoints
22
23 Timer {
24 id: resetInfo
25 interval: 1000
26 }
27
28 BarcodeReader {
29 id: barcodeReader
30
31 formats: (linearSwitch.checked ? (ZXing.LinearCodes) : ZXing.None) | (matrixSwitch.checked ? (ZXing.MatrixCodes) : ZXing.None)
32 tryRotate: tryRotateSwitch.checked
33 tryHarder: tryHarderSwitch.checked
34 tryInvert: tryInvertSwitch.checked
35 tryDownscale: tryDownscaleSwitch.checked
36 textMode: ZXing.HRI
37
38 // callback with parameter 'barcode', called for every successfully processed frame
39 onFoundBarcode: (barcode)=> {
40 points = [barcode.position.topLeft, barcode.position.topRight, barcode.position.bottomRight, barcode.position.bottomLeft]
41 info.text = qsTr("Format: \t %1 \nText: \t %2 \nType: \t %3 \nTime: \t %4 ms").arg(barcode.formatName).arg(barcode.text).arg(barcode.contentTypeName).arg(runTime)
42
43 resetInfo.restart()
44 // console.log(barcode)
45 }
46
47 // called for every processed frame where no barcode was detected
48 onFailedRead: ()=> {
49 points = nullPoints
50
51 if (!resetInfo.running)
52 info.text = "No barcode found (in %1 ms)".arg(runTime)
53 }
54 }
55
56 Camera {
57 id: camera
58
59 captureMode: Camera.CaptureViewfinder
60 deviceId: QtMultimedia.availableCameras[camerasComboBox.currentIndex] ? QtMultimedia.availableCameras[camerasComboBox.currentIndex].deviceId : ""
61
62 onDeviceIdChanged: {
63 focus.focusMode = CameraFocus.FocusContinuous
64 focus.focusPointMode = CameraFocus.FocusPointAuto
65 }
66
67 onError: console.log("camera error:" + errorString)
68 }
69
70 ColumnLayout {
71 anchors.fill: parent
72
73 RowLayout {
74 Layout.fillWidth: true
75 Layout.fillHeight: false
76 visible: QtMultimedia.availableCameras.length > 1
77 Label {
78 text: qsTr("Camera: ")
79 Layout.fillWidth: false
80 }
81 ComboBox {
82 id: camerasComboBox
83 Layout.fillWidth: true
84 model: QtMultimedia.availableCameras
85 textRole: "displayName"
86 currentIndex: 0
87 }
88 }
89
90 VideoOutput {
91 id: videoOutput
92 Layout.fillHeight: true
93 Layout.fillWidth: true
94 filters: [barcodeReader]
95 source: camera
96 autoOrientation: true
97
98 Shape {
99 id: polygon
100 anchors.fill: parent
101 visible: points.length == 4
102 ShapePath {
103 strokeWidth: 3
104 strokeColor: "red"
105 strokeStyle: ShapePath.SolidLine
106 fillColor: "transparent"
107 //TODO: really? I don't know qml...
108 startX: videoOutput.mapPointToItem(points[3]).x
109 startY: videoOutput.mapPointToItem(points[3]).y
110 PathLine {
111 x: videoOutput.mapPointToItem(points[0]).x
112 y: videoOutput.mapPointToItem(points[0]).y
113 }
114 PathLine {
115 x: videoOutput.mapPointToItem(points[1]).x
116 y: videoOutput.mapPointToItem(points[1]).y
117 }
118 PathLine {
119 x: videoOutput.mapPointToItem(points[2]).x
120 y: videoOutput.mapPointToItem(points[2]).y
121 }
122 PathLine {
123 x: videoOutput.mapPointToItem(points[3]).x
124 y: videoOutput.mapPointToItem(points[3]).y
125 }
126 }
127 }
128
129 Label {
130 id: info
131 color: "white"
132 padding: 10
133 background: Rectangle { color: "#80808080" }
134 }
135
136 ColumnLayout {
137 anchors.right: parent.right
138 anchors.bottom: parent.bottom
139
140 Switch {id: tryRotateSwitch; text: qsTr("Try Rotate"); checked: true }
141 Switch {id: tryHarderSwitch; text: qsTr("Try Harder"); checked: true }
142 Switch {id: tryInvertSwitch; text: qsTr("Try Invert"); checked: true }
143 Switch {id: tryDownscaleSwitch; text: qsTr("Try Downscale"); checked: true }
144 Switch {id: linearSwitch; text: qsTr("Linear Codes"); checked: true }
145 Switch {id: matrixSwitch; text: qsTr("Matrix Codes"); checked: true }
146 }
147 }
148 }
149 }