From 8765137a9ec0547b9edf3cb3b9ebae88a7043c2e Mon Sep 17 00:00:00 2001
From: Yoann Laissus <yoann.laissus@gmail.com>
Date: Sun, 30 May 2010 16:50:36 +0200
Subject: - Sync mouse wheel zoom and the slider - Fix mouse wheel zoom limits
 (slider's max and min)

---
 src/mainview.cpp   |  1 +
 src/mainwindow.cpp |  2 +-
 src/mainwindow.h   |  4 ++--
 src/webview.cpp    | 17 +++++++++++++++++
 src/webview.h      |  2 ++
 5 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/src/mainview.cpp b/src/mainview.cpp
index 84dc70af..0b17ef2a 100644
--- a/src/mainview.cpp
+++ b/src/mainview.cpp
@@ -329,6 +329,7 @@ WebTab *MainView::newWebTab(bool focused, bool nearParent)
     connect(tab->view(), SIGNAL(iconChanged()), this, SLOT(webViewIconChanged()));
     connect(tab->view(), SIGNAL(titleChanged(const QString &)), this, SLOT(webViewTitleChanged(const QString &)));
     connect(tab->view(), SIGNAL(urlChanged(const QUrl &)), this, SLOT(webViewUrlChanged(const QUrl &)));
+    connect(tab->view(), SIGNAL(zoomChanged(qreal)), m_parentWindow, SLOT(setZoomSliderFactor(qreal)));
 
     // connecting webPage signals with mainview
     connect(tab->view()->page(), SIGNAL(windowCloseRequested()), this, SLOT(windowCloseRequested()));
diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index d5b81c1e..dc29d2eb 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -906,7 +906,7 @@ void MainWindow::setZoomFactor(int factor)
 
 void MainWindow::setZoomSliderFactor(qreal factor)
 {
-    m_zoomSlider->setValue(factor*10);
+    m_zoomSlider->setValue(factor * 10);
 }
 
 
diff --git a/src/mainwindow.h b/src/mainwindow.h
index ffc91086..8acbef56 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -78,8 +78,6 @@ public:
     virtual QSize sizeHint() const;
     void setWidgetsVisible(bool makeFullScreen);
 
-    void setZoomSliderFactor(qreal factor);
-
 private:
     void setupActions();
     void setupTools();
@@ -103,6 +101,8 @@ public slots:
 
     void updateActions();
 
+    void setZoomSliderFactor(qreal factor);
+
 signals:
     // switching tabs
     void ctrlTabPressed();
diff --git a/src/webview.cpp b/src/webview.cpp
index a26cf63f..061dd256 100644
--- a/src/webview.cpp
+++ b/src/webview.cpp
@@ -496,6 +496,23 @@ void WebView::keyPressEvent(QKeyEvent *event)
     KWebView::keyPressEvent(event);
 }
 
+void WebView::wheelEvent(QWheelEvent *event)
+{
+    // Sync with the zoom slider
+    if (event->modifiers() == Qt::ControlModifier)
+    {
+        emit zoomChanged(zoomFactor());
+    }
+    
+    KWebView::wheelEvent(event);
+
+    // Limits of the slider
+    if (zoomFactor() > 1.9)
+        setZoomFactor(1.9);
+    else if (zoomFactor() < 0.1)
+        setZoomFactor(0.1);
+}
+
 
 void WebView::inspect()
 {
diff --git a/src/webview.h b/src/webview.h
index bac12e99..a4ba676c 100644
--- a/src/webview.h
+++ b/src/webview.h
@@ -56,6 +56,7 @@ protected:
     void mousePressEvent(QMouseEvent *event);
     void mouseMoveEvent(QMouseEvent *event);
     void keyPressEvent(QKeyEvent *event);
+    void wheelEvent(QWheelEvent *event);
 
 private slots:
     void search();
@@ -73,6 +74,7 @@ private slots:
 
 signals:
     void loadUrl(const KUrl &, const Rekonq::OpenType &);
+    void zoomChanged(qreal);
 
 private:
     QPoint _mousePos;
-- 
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