Fix crash when editing wxDVC items in place in wxOSX/Cocoa.

[wxWidgets.git] / include / wx / caret.h

diff --git a/include/wx/caret.h b/include/wx/caret.h
index 6a314bc94eee0cea858356e5da69087f2acca727..c0a30bb893b19593df8fa4b779b291c4a3808435 100644 (file)
--- a/include/wx/caret.h
+++ b/include/wx/caret.h
@@ -1,30 +1,40 @@
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////

-// Name:        caret.h
+// Name:        wx/caret.h

 // Purpose:     wxCaretBase class - the interface of wxCaret
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     23.05.99
 // RCS-ID:      $Id$
 // Purpose:     wxCaretBase class - the interface of wxCaret
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     23.05.99
 // RCS-ID:      $Id$

-// Copyright:   (c) wxWindows team
+// Copyright:   (c) wxWidgets team

 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_CARET_H_BASE_
 #define _WX_CARET_H_BASE_
 
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_CARET_H_BASE_
 #define _WX_CARET_H_BASE_
 

+#include "wx/defs.h"
+
+#if wxUSE_CARET
+

 // ---------------------------------------------------------------------------
 // forward declarations
 // ---------------------------------------------------------------------------
 
 // ---------------------------------------------------------------------------
 // forward declarations
 // ---------------------------------------------------------------------------
 

-class WXDLLEXPORT wxWindow;
-class WXDLLEXPORT wxWindowBase;
+class WXDLLIMPEXP_FWD_CORE wxWindow;
+class WXDLLIMPEXP_FWD_CORE wxWindowBase;

 
 

-// ---------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// headers we have to include
+// ----------------------------------------------------------------------------
+
+#include "wx/gdicmn.h"  // for wxPoint, wxSize
+
+// ----------------------------------------------------------------------------

 // A caret is a blinking cursor showing the position where the typed text will
 // appear. It can be either a solid block or a custom bitmap (TODO)
 // A caret is a blinking cursor showing the position where the typed text will
 // appear. It can be either a solid block or a custom bitmap (TODO)

-// ---------------------------------------------------------------------------
+// ----------------------------------------------------------------------------

 
 

-class WXDLLEXPORT wxCaretBase
+class WXDLLIMPEXP_CORE wxCaretBase

 {
 public:
     // ctors
 {
 public:
     // ctors


@@ -47,6 +57,9 @@ public:
         (void)Create(window, size);
     }
 
         (void)Create(window, size);
     }
 

+    // a virtual dtor has been provided since this class has virtual members
+    virtual ~wxCaretBase() { }
+

     // Create() functions - same as ctor but returns the success code
     // --------------------------------------------------------------
 
     // Create() functions - same as ctor but returns the success code
     // --------------------------------------------------------------
 


@@ -63,6 +76,9 @@ public:
         // is the caret valid?
     bool IsOk() const { return m_width != 0 && m_height != 0; }
 
         // is the caret valid?
     bool IsOk() const { return m_width != 0 && m_height != 0; }
 

+        // is the caret currently shown?
+    bool IsVisible() const { return m_countVisible > 0; }
+

         // get the caret position
     void GetPosition(int *x, int *y) const
     {
         // get the caret position
     void GetPosition(int *x, int *y) const
     {


@@ -82,6 +98,15 @@ public:
         // get the window we're associated with
     wxWindow *GetWindow() const { return (wxWindow *)m_window; }
 
         // get the window we're associated with
     wxWindow *GetWindow() const { return (wxWindow *)m_window; }
 

+        // change the size of the caret
+    void SetSize(int width, int height) {
+        m_width = width;
+        m_height = height;
+        DoSize();
+    }
+    void SetSize(const wxSize& size) { SetSize(size.x, size.y); }
+
+

     // operations
     // ----------
 
     // operations
     // ----------
 


@@ -92,20 +117,20 @@ public:
         // show/hide the caret (should be called by wxWindow when needed):
         // Show() must be called as many times as Hide() + 1 to make the caret
         // visible
         // show/hide the caret (should be called by wxWindow when needed):
         // Show() must be called as many times as Hide() + 1 to make the caret
         // visible

-    virtual void Show(bool show = TRUE)
+    virtual void Show(bool show = true)

         {
             if ( show )
             {
         {
             if ( show )
             {

-                if ( ++m_countVisible > 0 )
+                if ( m_countVisible++ == 0 )

                     DoShow();
             }
             else
             {
                     DoShow();
             }
             else
             {

-                if ( --m_countVisible < 1 )
+                if ( --m_countVisible == 0 )

                     DoHide();
             }
         }
                     DoHide();
             }
         }

-    virtual void Hide() { Show(FALSE); }
+    virtual void Hide() { Show(false); }

 
         // blink time is measured in milliseconds and is the time elapsed
         // between 2 inversions of the caret (blink time of the caret is common
 
         // blink time is measured in milliseconds and is the time elapsed
         // between 2 inversions of the caret (blink time of the caret is common


@@ -130,18 +155,19 @@ protected:
         m_width = width;
         m_height = height;
 
         m_width = width;
         m_height = height;
 

-        return TRUE;
+        return true;

     }
 
     // pure virtuals to implement in the derived class
     virtual void DoShow() = 0;
     virtual void DoHide() = 0;
     virtual void DoMove() = 0;
     }
 
     // pure virtuals to implement in the derived class
     virtual void DoShow() = 0;
     virtual void DoHide() = 0;
     virtual void DoMove() = 0;

+    virtual void DoSize() { }

 
     // the common initialization
     void Init()
     {
 
     // the common initialization
     void Init()
     {

-        m_window = (wxWindowBase *)NULL;
+        m_window = NULL;

         m_x = m_y = 0;
         m_width = m_height = 0;
         m_countVisible = 0;
         m_x = m_y = 0;
         m_width = m_height = 0;
         m_countVisible = 0;


@@ -160,19 +186,67 @@ protected:
     int m_countVisible;
 
 private:
     int m_countVisible;
 
 private:

-    DECLARE_NO_COPY_CLASS(wxCaretBase);
+    wxDECLARE_NO_COPY_CLASS(wxCaretBase);

 };
 
 // ---------------------------------------------------------------------------
 // now include the real thing
 // ---------------------------------------------------------------------------
 
 };
 
 // ---------------------------------------------------------------------------
 // now include the real thing
 // ---------------------------------------------------------------------------
 

-#ifdef __WXMSW__
+#if defined(__WXMSW__)

     #include "wx/msw/caret.h"
 #else
     #include "wx/msw/caret.h"
 #else

-    // not implemented yet
-    typedef wxCaretBase wxCaret;
+    #include "wx/generic/caret.h"

 #endif // platform
 
 #endif // platform
 

-#endif // _WX_CARET_H_BASE_
+// ----------------------------------------------------------------------------
+// wxCaretSuspend: a simple class which hides the caret in its ctor and
+// restores it in the dtor, this should be used when drawing on the screen to
+// avoid overdrawing the caret
+// ----------------------------------------------------------------------------
+
+#ifdef wxHAS_CARET_USING_OVERLAYS
+
+// we don't need to hide the caret if it's rendered using overlays
+class WXDLLIMPEXP_CORE wxCaretSuspend
+{
+public:
+    wxCaretSuspend(wxWindow *WXUNUSED(win)) {}
+
+    wxDECLARE_NO_COPY_CLASS(wxCaretSuspend);
+};
+
+#else // !wxHAS_CARET_USING_OVERLAYS
+
+class WXDLLIMPEXP_CORE wxCaretSuspend
+{
+public:
+    wxCaretSuspend(wxWindow *win)
+    {
+        m_caret = win->GetCaret();
+        m_show = false;
+        if ( m_caret && m_caret->IsVisible() )
+        {
+            m_caret->Hide();
+            m_show = true;
+        }
+    }

 
 

+    ~wxCaretSuspend()
+    {
+        if ( m_caret && m_show )
+            m_caret->Show();
+    }
+
+private:
+    wxCaret *m_caret;
+    bool     m_show;
+
+    wxDECLARE_NO_COPY_CLASS(wxCaretSuspend);
+};
+
+#endif // wxHAS_CARET_USING_OVERLAYS/!wxHAS_CARET_USING_OVERLAYS
+
+#endif // wxUSE_CARET
+
+#endif // _WX_CARET_H_BASE_