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WebEngineViewサンプル

Last updated at Posted at 2017-09-11

#WebEngineViewのサンプル
##テスト用QML

import QtQuick 2.9
import QtQuick.Controls 2.2
import QtQuick.Layouts 1.3
import QtWebEngine 1.0
import QtMultimedia 5.9

ApplicationWindow {
    id: root
    visible: true
    width: 640
    height: 480
    title: qsTr("WebEngineViewサンプル")
    onHeightChanged: adjustWebViewSize()

    Audio { id: clickSound; source: "Sounds/btn01.mp3" }

    Column {
        id: column
        Row {
            width: root.width

            // URL入力用TextInput定義
            Rectangle {
                width: root.width - buttonGo.width
                height: textUrl.height
                border.width: 1

                TextInput {
                    id: textUrl
                    width: root.contentItem.width - buttonGo.width
                }
            }

            // ブラウズ開始ボタン定義
            Button {
                id: buttonGo
                text: "Go"
                onClicked: { clickSound.play(); webView.url = textUrl.text }
            }
        }

        Row {
            width: root.width

            // 戻るボタン定義
            Button {
                id: buttonBack
                text: "Back"
                onClicked: { clickSound.play(); webView.goBack() }
            }

            // 進むボタン定義
            Button {
                id: buttonForward
                text: "Forward"
                onClicked: { clickSound.play(); webView.goForward() }
            }
        }

        // WebEngineView定義
        WebEngineView {
            id: webView
            width: root.width
            height: root.contentItem.height - buttonGo.height - buttonBack.height
            onCanGoBackChanged: buttonBack.enabled = canGoBack
            onCanGoForwardChanged: buttonForward.enabled = canGoForward
            onLoadingChanged: {
                switch (loadRequest.status) {
                case WebEngineLoadRequest.LoadStartedStatus:    // ページ読み込み開始したのでプログレスバーを表示する
                    loadProgressBar.visible = true
                    adjustWebViewSize()
                    break

                default:                                        // それ以外はプログレスバーを消去する
                    loadProgressBar.visible = false
                    adjustWebViewSize()
                    break
                }
            }
            onLoadProgressChanged: loadProgressBar.value = loadProgress // プログレスバー更新処理
        }

        // ページ読み込み進捗表示用プログレスバー定義
        ProgressBar {
            id: loadProgressBar
            width: root.width
            from: 0
            to: 100
            value: 0
            visible: false
        }
    }

    // WebEngineViewのリサイズ処理
    function adjustWebViewSize() {
        webView.height = loadProgressBar.visible
                ? root.contentItem.height - buttonGo.height - buttonBack.height - loadProgressBar.height
                : root.contentItem.height - buttonGo.height - buttonBack.height
    }
}

う〜ん…もうちょっとリサイズ処理なんとかならないかな?^^;
##実行結果
SignalTransitionサンプル動画
※Linux Mint 18.2 & Qt 5.9.1使用

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