From 0fa2bea5a90c0f935aa6e4ef765cf5a24d94c23d Mon Sep 17 00:00:00 2001
From: ck <qt-info@nokia.com>
Date: Tue, 13 Apr 2010 11:06:23 +0200
Subject: Assistant: Handle forward/backward mouse buttons on press on Linux.

Written-by: kh1
Reviewed-by: ck
---
 tools/assistant/tools/assistant/helpviewer.h       |  3 ++
 tools/assistant/tools/assistant/helpviewer_qtb.cpp | 34 +++++++++++++++++-----
 tools/assistant/tools/assistant/helpviewer_qtb.h   |  3 ++
 tools/assistant/tools/assistant/helpviewer_qwv.cpp | 32 +++++++++++++++-----
 tools/assistant/tools/assistant/helpviewer_qwv.h   |  2 ++
 5 files changed, 58 insertions(+), 16 deletions(-)

diff --git a/tools/assistant/tools/assistant/helpviewer.h b/tools/assistant/tools/assistant/helpviewer.h
index 246700f..6f1f48d 100644
--- a/tools/assistant/tools/assistant/helpviewer.h
+++ b/tools/assistant/tools/assistant/helpviewer.h
@@ -47,6 +47,7 @@
 
 QT_BEGIN_NAMESPACE
 
+class QMouseEvent;
 class QUrl;
 
 class AbstractHelpViewer
@@ -64,6 +65,8 @@ public:
     virtual void resetScale() = 0;
     virtual qreal scale() const = 0;
 
+    virtual bool handleForwardBackwardMouseButtons(QMouseEvent *e) = 0;
+
     static QString AboutBlank;
     static QString LocalHelpFile;
     static QString PageNotFoundMessage;
diff --git a/tools/assistant/tools/assistant/helpviewer_qtb.cpp b/tools/assistant/tools/assistant/helpviewer_qtb.cpp
index 07b89eb..3ff64e8 100644
--- a/tools/assistant/tools/assistant/helpviewer_qtb.cpp
+++ b/tools/assistant/tools/assistant/helpviewer_qtb.cpp
@@ -127,6 +127,20 @@ void HelpViewer::resetScale()
     zoomCount = 0;
 }
 
+bool HelpViewer::handleForwardBackwardMouseButtons(QMouseEvent *e)
+{
+    if (e->button() == Qt::XButton1) {
+        QTextBrowser::backward();
+        return true;
+    }
+
+    if (e->button() == Qt::XButton2) {
+        QTextBrowser::forward();
+        return true;
+    }
+    return false;
+}
+
 void HelpViewer::setSource(const QUrl &url)
 {
     TRACE_OBJ
@@ -229,15 +243,10 @@ void HelpViewer::contextMenuEvent(QContextMenuEvent *e)
 void HelpViewer::mouseReleaseEvent(QMouseEvent *e)
 {
     TRACE_OBJ
-    if (e->button() == Qt::XButton1) {
-        QTextBrowser::backward();
-        return;
-    }
-
-    if (e->button() == Qt::XButton2) {
-        QTextBrowser::forward();
+#ifndef Q_OS_LINUX
+    if (handleForwardBackwardMouseButtons(e))
         return;
-    }
+#endif
 
     controlPressed = e->modifiers() & Qt::ControlModifier;
     if ((controlPressed && hasAnchorAt(e->pos())) ||
@@ -249,6 +258,15 @@ void HelpViewer::mouseReleaseEvent(QMouseEvent *e)
     QTextBrowser::mouseReleaseEvent(e);
 }
 
+void HelpViewer::mousePressEvent(QMouseEvent *e)
+{
+#ifdef Q_OS_LINUX
+    if (handleForwardBackwardMouseButtons(e))
+        return;
+#endif
+    QTextBrowser::mousePressEvent(e);
+}
+
 void HelpViewer::keyPressEvent(QKeyEvent *e)
 {
     TRACE_OBJ
diff --git a/tools/assistant/tools/assistant/helpviewer_qtb.h b/tools/assistant/tools/assistant/helpviewer_qtb.h
index a05782c..acb734b 100644
--- a/tools/assistant/tools/assistant/helpviewer_qtb.h
+++ b/tools/assistant/tools/assistant/helpviewer_qtb.h
@@ -72,6 +72,8 @@ public:
     void resetScale();
     qreal scale() const { return zoomCount; }
 
+    bool handleForwardBackwardMouseButtons(QMouseEvent *e);
+
     void setSource(const QUrl &url);
 
     inline bool hasSelection() const
@@ -91,6 +93,7 @@ private:
     void contextMenuEvent(QContextMenuEvent *e);
     void mouseReleaseEvent(QMouseEvent *e);
     void keyPressEvent(QKeyEvent *e);
+    void mousePressEvent(QMouseEvent *e);
 
 private slots:
     void openLinkInNewTab();
diff --git a/tools/assistant/tools/assistant/helpviewer_qwv.cpp b/tools/assistant/tools/assistant/helpviewer_qwv.cpp
index 18046a7..db1cd58 100644
--- a/tools/assistant/tools/assistant/helpviewer_qwv.cpp
+++ b/tools/assistant/tools/assistant/helpviewer_qwv.cpp
@@ -301,6 +301,22 @@ void HelpViewer::resetScale()
     setTextSizeMultiplier(1.0);
 }
 
+bool HelpViewer::handleForwardBackwardMouseButtons(QMouseEvent *e)
+{
+    TRACE_OBJ
+    if (e->button() == Qt::XButton1) {
+        triggerPageAction(QWebPage::Back);
+        return true;
+    }
+
+    if (e->button() == Qt::XButton2) {
+        triggerPageAction(QWebPage::Forward);
+        return true;
+    }
+
+    return false;
+}
+
 void HelpViewer::setSource(const QUrl &url)
 {
     TRACE_OBJ
@@ -328,15 +344,10 @@ void HelpViewer::wheelEvent(QWheelEvent *e)
 void HelpViewer::mouseReleaseEvent(QMouseEvent *e)
 {
     TRACE_OBJ
-    if (e->button() == Qt::XButton1) {
-        triggerPageAction(QWebPage::Back);
+#ifndef Q_OS_LINUX
+    if (handleForwardBackwardMouseButtons(e))
         return;
-    }
-
-    if (e->button() == Qt::XButton2) {
-        triggerPageAction(QWebPage::Forward);
-        return;
-    }
+#endif
 
     QWebView::mouseReleaseEvent(e);
 }
@@ -356,6 +367,11 @@ void HelpViewer::actionChanged()
 void HelpViewer::mousePressEvent(QMouseEvent *event)
 {
     TRACE_OBJ
+#ifdef Q_OS_LINUX
+    if (handleForwardBackwardMouseButtons(event))
+        return;
+#endif
+
     HelpPage *currentPage = static_cast<HelpPage*>(page());
     if (currentPage) {
         currentPage->m_pressedButtons = event->buttons();
diff --git a/tools/assistant/tools/assistant/helpviewer_qwv.h b/tools/assistant/tools/assistant/helpviewer_qwv.h
index 41ee553..a2c0389 100644
--- a/tools/assistant/tools/assistant/helpviewer_qwv.h
+++ b/tools/assistant/tools/assistant/helpviewer_qwv.h
@@ -69,6 +69,8 @@ public:
     void resetScale();
     qreal scale() const { return textSizeMultiplier(); }
 
+    bool handleForwardBackwardMouseButtons(QMouseEvent *e);
+
     void setSource(const QUrl &url);
     inline QUrl source() const { return url(); }
 
-- 
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