1. added flags to splitter drawing functions and replaced

GetSplitterBorderAndSash() with GetSplitterParams()
2. added support for "hot tracking" to wxSplitterWindow
3. added GTK2 support for the splitter to GTK renderer


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@22427 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/splitter.h

@@ -245,12 +245,18 @@ protected:
     // set the sash position and send an event about it having been changed
     void SetSashPositionAndNotify(int sashPos);
 
+    // callbacks executed when we detect that the mouse has entered or left
+    // the sash
+    virtual void OnEnterSash();
+    virtual void OnLeaveSash();
+
     // set the cursor appropriate for the current split mode
     void SetResizeCursor();
 
+    // redraw the splitter if its "hotness" changed if necessary
+    void RedrawIfHotSensitive(bool isHot);
+
     wxSplitMode m_splitMode;
-    bool        m_permitUnsplitAlways;
-    bool        m_needUpdating; // when in live mode, set this to TRUE to resize children in idle
     wxWindow*   m_windowOne;
     wxWindow*   m_windowTwo;
     int         m_dragMode;
@@ -266,6 +272,11 @@ protected:
     wxCursor    m_sashCursorNS;
     wxPen      *m_sashTrackerPen;
 
+    // when in live mode, set this to TRUE to resize children in idle
+    bool        m_needUpdating:1;
+    bool        m_permitUnsplitAlways:1;
+    bool        m_isHot:1;
+
 private:
     WX_DECLARE_CONTROL_CONTAINER();
 

include/wx/renderer.h

@@ -62,6 +62,29 @@ enum
     wxCONTROL_DIRTY      = 0x80000000
 };
 
+// ----------------------------------------------------------------------------
+// helper structs
+// ----------------------------------------------------------------------------
+
+// wxSplitterWindow parameters
+struct WXDLLEXPORT wxSplitterRenderParams
+{
+    // the only way to initialize this struct is by using this ctor
+    wxSplitterRenderParams(wxCoord widthSash_, wxCoord border_, bool isSens_)
+        : widthSash(widthSash_), border(border_), isHotSensitive(isSens_)
+        {
+        }
+
+    // the width of the splitter sash
+    const wxCoord widthSash;
+
+    // the width of the border of the splitter window
+    const wxCoord border;
+
+    // true if the splitter changes its appearance when the mouse is over it
+    const bool isHotSensitive;
+};
+
 // ----------------------------------------------------------------------------
 // wxRendererNative: abstracts drawing methods needed by the native controls
 // ----------------------------------------------------------------------------
@@ -90,14 +113,16 @@ public:
     // drawn by DrawSash() blends into it well
     virtual void DrawSplitterBorder(wxWindow *win,
                                     wxDC& dc,
-                                    const wxRect& rect) = 0;
+                                    const wxRect& rect,
+                                    int flags = 0) = 0;
 
     // draw a (vertical) sash
     virtual void DrawSplitterSash(wxWindow *win,
                                   wxDC& dc,
                                   const wxSize& size,
                                   wxCoord position,
-                                  wxOrientation orient) = 0;
+                                  wxOrientation orient,
+                                  int flags = 0) = 0;
 
 
     // geometry functions
@@ -105,7 +130,7 @@ public:
 
     // get the splitter parameters: the x field of the returned point is the
     // sash width and the y field is the border width
-    virtual wxPoint GetSplitterSashAndBorder(const wxWindow *win) = 0;
+    virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win) = 0;
 
 
     // pseudo constructors
@@ -149,19 +174,21 @@ public:
 
     virtual void DrawSplitterBorder(wxWindow *win,
                                     wxDC& dc,
-                                    const wxRect& rect)
+                                    const wxRect& rect,
+                                    int flags = 0)
         { m_rendererNative.DrawSplitterBorder(win, dc, rect); }
 
     virtual void DrawSplitterSash(wxWindow *win,
                                   wxDC& dc,
                                   const wxSize& size,
                                   wxCoord position,
-                                  wxOrientation orient)
+                                  wxOrientation orient,
+                                  int flags = 0)
         { m_rendererNative.DrawSplitterSash(win, dc, size, position, orient); }
 
 
-    virtual wxPoint GetSplitterSashAndBorder(const wxWindow *win)
-        { return m_rendererNative.GetSplitterSashAndBorder(win); }
+    virtual wxSplitterRenderParams GetSplitterParams(const wxWindow *win)
+        { return m_rendererNative.GetSplitterParams(win); }
 
 protected:
     wxRendererNative& m_rendererNative;