fix: [extension] auto zoom web view

Log:
Change-Id: Ib1755c34dfd394675631d76371c663697ba709d7

src/plugins/core/gui/plugindetailsview.cpp

@@ -18,10 +18,43 @@
 #include <QDesktopServices>
 #include <QWebEngineView>
 #include <QDir>
+#include <QApplication>
+#include <QMainWindow>
 
 DWIDGET_USE_NAMESPACE
 using namespace dpfservice;
 
+class AutoZoomWebEngineView : public QWebEngineView {
+public:
+    explicit AutoZoomWebEngineView(QWidget *parent = nullptr)
+        : QWebEngineView(parent) {}
+
+protected:
+    void resizeEvent(QResizeEvent *event) override {
+        QWebEngineView::resizeEvent(event);
+
+        // first resize is full screen
+        if (isFirstResize) {
+            isFirstResize = false;
+            return;
+        }
+
+        QSize newSize = event->size();
+        qreal zoomFactor = calculateZoomFactor(newSize);
+        setZoomFactor(zoomFactor);
+    }
+
+    qreal calculateZoomFactor(const QSize &size) {
+        if (size.width() > maxWidth)
+            maxWidth = size.width();
+        qreal zoomFactor = static_cast<qreal>(size.width()) / maxWidth;
+        return zoomFactor;
+    }
+private:
+    int maxWidth = 0;
+    bool isFirstResize = true;
+};
+
 DetailsView::DetailsView(QWidget *parent)
     : DWidget(parent)
 {
@@ -135,7 +168,7 @@ void DetailsView::setupUi()
     logoLabel->setPixmap(logo.pixmap(QSize(96, 96)));
 
     auto webViewLayout = new QHBoxLayout();
-    webView = new QWebEngineView(this);
+    webView = new AutoZoomWebEngineView(this);
     webView->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
     webViewLayout->addWidget(webView);
 

src/plugins/core/gui/plugindetailsview.h

@@ -14,14 +14,15 @@ QT_BEGIN_NAMESPACE
 class QGridLayout;
 class QVBoxLayout;
 class QSpacerItem;
-class QWebEngineView;
 class QLabel;
 QT_END_NAMESPACE
 
 DWIDGET_BEGIN_NAMESPACE
 class DTextEdit;
 class DLabel;
 DWIDGET_END_NAMESPACE
+
+class AutoZoomWebEngineView;
 class DetailsView : public DTK_WIDGET_NAMESPACE::DWidget
 {
     Q_OBJECT
@@ -50,7 +51,7 @@ private slots:
 
     DTK_WIDGET_NAMESPACE::DPushButton *loadBtn {nullptr};
     dpf::PluginMetaObjectPointer pluginMetaInfo;
-    QWebEngineView *webView {nullptr};
+    AutoZoomWebEngineView *webView {nullptr};
     QLabel *logoLabel {nullptr};
 };