Blinking caret for visual formula editor.

2 files changed, 50 insertions, 2 deletions

diff --git a/starmath/inc/view.hxx b/starmath/inc/view.hxx
index 063d6b08dd11..ff2b6b226ba9 100644
--- a/starmath/inc/view.hxx
+++ b/starmath/inc/view.hxx
@@ -35,6 +35,7 @@
 #include <sfx2/shell.hxx>
 #include <sfx2/viewfac.hxx>
 #include <sfx2/viewfrm.hxx>
+#include <vcl/timer.hxx>
 #include <svtools/colorcfg.hxx>
 #include "edit.hxx"
 #include "node.hxx"
@@ -56,6 +57,8 @@ class SmGraphicWindow : public ScrollableWindow
     // old style editing pieces
     Rectangle aCursorRect;
     bool      bIsCursorVisible;
+
+    AutoTimer     aCaretBlinkTimer;
 public:
     bool IsCursorVisible() const { return bIsCursorVisible; }
     void ShowCursor(bool bShow);
@@ -88,7 +91,10 @@ protected:
 
 private:
     void RepaintViewShellDoc();
-
+    DECL_LINK(CaretBlinkTimerHdl, AutoTimer *);
+    void CaretBlinkInit();
+    void CaretBlinkStart();
+    void CaretBlinkStop();
 public:
     SmGraphicWindow(SmViewShell* pShell);
     ~SmGraphicWindow();
diff --git a/starmath/source/view.cxx b/starmath/source/view.cxx
index 8e4068e6ebc5..87edffcbcedc 100644
--- a/starmath/source/view.cxx
+++ b/starmath/source/view.cxx
@@ -115,6 +115,8 @@ SmGraphicWindow::SmGraphicWindow(SmViewShell* pShell):
 
     SetHelpId(HID_SMA_WIN_DOCUMENT);
     SetUniqueId(HID_SMA_WIN_DOCUMENT);
+
+    CaretBlinkInit();
 }
 
 SmGraphicWindow::~SmGraphicWindow()
@@ -123,6 +125,7 @@ SmGraphicWindow::~SmGraphicWindow()
         pAccessible->ClearWin();    // make Accessible defunctional
     // Note: memory for pAccessible will be freed when the reference
     // xAccessible is released.
+    CaretBlinkStop();
 }
 
 void SmGraphicWindow::StateChanged( StateChangedType eType )
@@ -221,6 +224,7 @@ void SmGraphicWindow::GetFocus()
     //Let view shell know what insertions should be done in visual editor
     pViewShell->SetInsertIntoEditWindow(false);
     SetIsCursorVisible(true);
+    CaretBlinkStart();
     RepaintViewShellDoc();
 }
 
@@ -237,7 +241,8 @@ void SmGraphicWindow::LoseFocus()
     }
     if (!IsInlineEditEnabled())
         return;
-    SetIsCursorVisible(FALSE);
+    SetIsCursorVisible(false);
+    CaretBlinkStop();
     RepaintViewShellDoc();
 }
 
@@ -247,6 +252,39 @@ void SmGraphicWindow::RepaintViewShellDoc()
     rDoc.Repaint();
 }
 
+IMPL_LINK( SmGraphicWindow, CaretBlinkTimerHdl, AutoTimer *, EMPTYARG )
+{
+    if (IsCursorVisible())
+        SetIsCursorVisible(false);
+    else
+        SetIsCursorVisible(true);
+
+    RepaintViewShellDoc();
+
+    return 0;
+}
+
+void SmGraphicWindow::CaretBlinkInit()
+{
+    aCaretBlinkTimer.SetTimeoutHdl(LINK(this, SmGraphicWindow, CaretBlinkTimerHdl));
+    aCaretBlinkTimer.SetTimeout( ScrollableWindow::GetSettings().GetStyleSettings().GetCursorBlinkTime() );
+}
+
+void SmGraphicWindow::CaretBlinkStart()
+{
+    if (!IsInlineEditEnabled())
+        return;
+    if ( aCaretBlinkTimer.GetTimeout() != STYLE_CURSOR_NOBLINKTIME )
+        aCaretBlinkTimer.Start();
+}
+
+void SmGraphicWindow::CaretBlinkStop()
+{
+    if (!IsInlineEditEnabled())
+        return;
+    aCaretBlinkTimer.Stop();
+}
+
 void SmGraphicWindow::ShowCursor(bool bShow)
     // shows or hides the formula-cursor depending on 'bShow' is true or not
 {
@@ -475,6 +513,10 @@ void SmGraphicWindow::KeyInput(const KeyEvent& rKEvt)
             }
         }
     }
+    CaretBlinkStop();
+    CaretBlinkStart();
+    SetIsCursorVisible(true);
+    RepaintViewShellDoc();
 }