first pass of wxUniv merge - nothing works, most parts don't even compile

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10673 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/univ/scrthumb.h

@@ -0,0 +1,142 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/univ/scrthumb.h
+// Purpose:     wxScrollThumb class
+// Author:      Vadim Zeitlin
+// Modified by:
+// Created:     12.02.01
+// RCS-ID:      $Id$
+// Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_UNIV_SCRTHUMB_H_
+#define _WX_UNIV_SCRTHUMB_H_
+
+#ifdef __GNUG__
+    #pragma interface "univscrthumb.h"
+#endif
+
+// ----------------------------------------------------------------------------
+// wxScrollThumb is not a control but just a class containing the common
+// functionality of scroll thumb such as used by scrollbars, sliders and maybe
+// other (user) controls
+//
+// This class is similar to wxScrollThumb.
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxControlWithThumb;
+class WXDLLEXPORT wxMouseEvent;
+class WXDLLEXPORT wxRect;
+class WXDLLEXPORT wxScrollTimer;
+
+#include "wx/timer.h"
+
+// ----------------------------------------------------------------------------
+// wxScrollThumb: an abstraction of scrollbar thumb
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxScrollThumb
+{
+public:
+    enum Shaft
+    {
+        Shaft_None = -1,
+        Shaft_Above,    // or to the left of the thumb
+        Shaft_Below,    // or to the right of the thumb
+        Shaft_Thumb,    // on the thumb
+        Shaft_Max
+    };
+
+    // ctor requires a back pointer to wxControlWithThumb
+    wxScrollThumb(wxControlWithThumb *control);
+
+    // process a mouse click: will capture the mouse if the button was pressed
+    // on either the thumb (start dragging it then) or the shaft (start
+    // scrolling)
+    bool HandleMouse(const wxMouseEvent& event) const;
+
+    // process a mouse move
+    bool HandleMouseMove(const wxMouseEvent& event) const;
+
+    // dtor
+    ~wxScrollThumb();
+
+private:
+    // do we have the mouse capture?
+    bool HasCapture() const { return m_captureData != NULL; }
+
+    // get the coord of this event in the direction we're interested in (y for
+    // vertical shaft or x for horizontal ones)
+    wxCoord GetMouseCoord(const wxMouseEvent& event) const;
+
+    // get the position of the thumb corresponding to the current mouse
+    // position (can only be called while we're dragging the thumb!)
+    int GetThumbPos(const wxMouseEvent& event) const;
+
+    // the main control
+    wxControlWithThumb *m_control;
+
+    // the part of it where the mouse currently is
+    Shaft m_shaftPart;
+
+    // the data for the mouse capture
+    struct WXDLLEXPORT wxScrollThumbCaptureData *m_captureData;
+};
+
+// ----------------------------------------------------------------------------
+// wxControlWithThumb: interface implemented by controls using wxScrollThumb
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxControlWithThumb
+{
+public:
+    // simple accessors
+    // ----------------
+
+    // get the controls window (used for mouse capturing)
+    virtual wxWindow *GetWindow() = 0;
+
+    // get the orientation of the shaft (vertical or horizontal)
+    virtual bool IsVertical() const = 0;
+
+    // geometry functions
+    // ------------------
+
+    // hit testing: return part of the shaft the point is in (or Shaft_None)
+    virtual wxScrollThumb::Shaft HitTest(const wxPoint& pt) const = 0;
+
+    // get the current position in pixels of the thumb
+    virtual wxCoord ThumbPosToPixel() const = 0;
+
+    // transform from pixel offset to the thumb logical position
+    virtual int PixelToThumbPos(wxCoord x) const = 0;
+
+    // callbacks
+    // ---------
+
+    // set or clear the specified flag in the arrow state: this function is
+    // responsible for refreshing the control
+    virtual void SetShaftPartState(wxScrollThumb::Shaft shaftPart,
+                                   int flag,
+                                   bool set = TRUE) = 0;
+
+    // called when the user starts dragging the thumb
+    virtual void OnThumbDragStart(int pos) = 0;
+
+    // called while the user drags the thumb
+    virtual void OnThumbDrag(int pos) = 0;
+
+    // called when the user stops dragging the thumb
+    virtual void OnThumbDragEnd(int pos) = 0;
+
+    // called before starting to call OnPageScroll() - gives the control the
+    // possibility to remember its current state
+    virtual void OnPageScrollStart() = 0;
+
+    // called while the user keeps the mouse pressed above/below the thumb,
+    // return TRUE to continue scrollign and FALSE to stop it (e.g. because the
+    // scrollbar has reached the top/bottom)
+    virtual bool OnPageScroll(int pageInc) = 0;
+};
+
+#endif // _WX_UNIV_SCRTHUMB_H_