From e72980de11f6c65dfa80d6222308a3a8e4f38244 Mon Sep 17 00:00:00 2001
From: Mark Watkins <jedimark@users.sourceforge.net>
Date: Sat, 16 Jul 2011 00:27:37 +1000
Subject: [PATCH] keyboard left/right control when graphs focused

---
 Graphs/graphwindow.cpp | 26 ++++++++++++++++++++++++++
 Graphs/graphwindow.h   |  1 +
 2 files changed, 27 insertions(+)

diff --git a/Graphs/graphwindow.cpp b/Graphs/graphwindow.cpp
index c0d00577..0f77778a 100644
--- a/Graphs/graphwindow.cpp
+++ b/Graphs/graphwindow.cpp
@@ -32,6 +32,7 @@ gGraphWindow::gGraphWindow(QWidget *parent, const QString & title, QGLWidget * s
     }
     //setAcceptDrops(true);
     setMouseTracking(true);
+    setFocusPolicy(Qt::StrongFocus);
 }
 
 gGraphWindow::gGraphWindow(QWidget *parent, const QString & title, QGLContext * context,Qt::WindowFlags f)
@@ -57,6 +58,7 @@ gGraphWindow::gGraphWindow(QWidget *parent, const QString & title, QGLContext *
     }
     //setAcceptDrops(true);
     setMouseTracking(true);
+    setFocusPolicy(Qt::StrongFocus);
 }
 
 gGraphWindow::~gGraphWindow()
@@ -360,6 +362,30 @@ void gGraphWindow::mouseReleaseEvent(QMouseEvent * event)
         OnMouseRightRelease(event);
 
 }
+void gGraphWindow::keyPressEvent(QKeyEvent * event)
+{
+    bool moved=false;
+    if (event->key()==Qt::Key_Left) {
+        MoveX(40);
+        moved=true;
+    } else if (event->key()==Qt::Key_Right) {
+        MoveX(-40);
+        moved=true;
+    }
+
+    if (moved) {
+        double min=MinX();
+        double max=MaxX();
+        if (pref["LinkGraphMovement"].toBool()) {
+            for (list<gGraphWindow *>::iterator g=link_zoom.begin();g!=link_zoom.end();g++) {
+                (*g)->SetXBounds(min,max);
+            }
+        }
+        event->accept();
+    } else {
+        event->ignore();
+    }
+}
 
 void gGraphWindow::OnMouseRightDown(QMouseEvent * event)
 {
diff --git a/Graphs/graphwindow.h b/Graphs/graphwindow.h
index f6288c8b..7b429b5b 100644
--- a/Graphs/graphwindow.h
+++ b/Graphs/graphwindow.h
@@ -44,6 +44,7 @@ public:
     virtual void mousePressEvent(QMouseEvent * event);
     virtual void mouseReleaseEvent(QMouseEvent * event);
     virtual void mouseDoubleClickEvent(QMouseEvent * event);
+    virtual void keyPressEvent(QKeyEvent * event);
     //virtual void OnMouseRightDClick(wxMouseEvent * event);
     virtual void OnMouseLeftDown(QMouseEvent * event);
     virtual void OnMouseLeftRelease (QMouseEvent * event);