Changeset 101118 in vbox

Timestamp:

Sep 13, 2023 6:12:28 PM (19 months ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

159087

Message:

FE/Qt: bugref:10513: UIAdvancedSettingsDialog: Implementing sticky scrolling timer allowing to make scroll sessions through whole the advanced settings dialog even through other scrolling recipients.

Location:

trunk/src/VBox/Frontends/VirtualBox/src/settings

Files:

• UIAdvancedSettingsDialog.cpp (modified) (5 diffs)
• UIAdvancedSettingsDialog.h (modified) (3 diffs)

trunk/src/VBox/Frontends/VirtualBox/src/settings/UIAdvancedSettingsDialog.cpp

@@ -27 +27 @@
 
 /* Qt includes: */
+#include <QAbstractButton>
+#include <QAbstractScrollArea>
+#include <QAbstractSpinBox>
 #include <QCloseEvent>
+#include <QComboBox>
+#include <QCoreApplication>
 #include <QGridLayout>
 #include <QProgressBar>
@@ -33 +38 @@
 #include <QScrollArea>
 #include <QScrollBar>
+#include <QSlider>
 #include <QStackedWidget>
+#include <QTimer>
 #include <QVariant>
 #include <QVBoxLayout>
@@ -130 +137 @@
     , m_fValid(true)
     , m_fSilent(true)
+    , m_pScrollingTimer(0)
     , m_pLayoutMain(0)
     , m_pEditorFilter(0)
@@ -210 +218 @@
     /* Mark serialization finished: */
     m_fSerializationIsInProgress = false;
+}
+
+bool UIAdvancedSettingsDialog::eventFilter(QObject *pObject, QEvent *pEvent)
+{
+    /* Ignore other than wheel events in this handler: */
+    if (pEvent->type() != QEvent::Wheel)
+        return QIWithRetranslateUI<QMainWindow>::eventFilter(pObject, pEvent);
+
+    /* Do not touch wheel events for m_pScrollArea or it's children: */
+    if (   pObject == m_pScrollArea
+        || pObject->parent() == m_pScrollArea)
+    {
+        /* Moreover restart 'sticky scrolling timer' during which
+         * all the scrolling will be redirected to m_pScrollViewport: */
+        m_pScrollingTimer->start();
+        return QIWithRetranslateUI<QMainWindow>::eventFilter(pObject, pEvent);
+    }
+
+    /* While 'sticky scrolling timer' is active
+     * redirect wheel event for widgets of following types to m_pScrollViewport: */
+    if (   m_pScrollingTimer->isActive()
+        && (   qobject_cast<QAbstractButton*>(pObject)
+            || qobject_cast<QAbstractScrollArea*>(pObject)
+            || qobject_cast<QAbstractScrollArea*>(pObject->parent())
+            || qobject_cast<QAbstractSpinBox*>(pObject)
+            || qobject_cast<QAbstractSpinBox*>(pObject->parent())
+            || qobject_cast<QComboBox*>(pObject)
+            || qobject_cast<QSlider*>(pObject)
+            || qobject_cast<QTabWidget*>(pObject)
+            || qobject_cast<QTabWidget*>(pObject->parent())))
+    {
+        /* Check if redirected event was really handled, otherwise give it back: */
+        if (QCoreApplication::sendEvent(m_pScrollViewport, pEvent))
+            return true;
+    }
+
+    /* Call to base-class: */
+    return QIWithRetranslateUI<QMainWindow>::eventFilter(pObject, pEvent);
 }
 
@@ -536 +582 @@
 void UIAdvancedSettingsDialog::prepare()
 {
+    /* Prepare 'sticky scrolling timer': */
+    m_pScrollingTimer = new QTimer(this);
+    if (m_pScrollingTimer)
+    {
+        m_pScrollingTimer->setInterval(500);
+        m_pScrollingTimer->setSingleShot(true);
+    }
+
     /* Prepare central-widget: */
     setCentralWidget(new QWidget);

trunk/src/VBox/Frontends/VirtualBox/src/settings/UIAdvancedSettingsDialog.h

@@ -45 +45 @@
 class QShowEvent;
 class QStackedWidget;
+class QTimer;
 class QVariant;
 class QIDialogButtonBox;
@@ -107 +108 @@
 
 protected:
+
+    /** Preprocesses Qt @a pEvent for passed @a pObject. */
+    virtual bool eventFilter(QObject *pObject, QEvent *pEvent) RT_OVERRIDE;
 
     /** Handles translation event. */
@@ -239 +243 @@
     QMap<int, QString>  m_pageHelpKeywords;
 
+    /** Holds the 'sticky scrolling timer' instance. */
+    QTimer *m_pScrollingTimer;
+
     /** @name Widgets
      * @{ */