94fa33a0ed
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@11239 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
244 lines
8.8 KiB
C++
244 lines
8.8 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: wx/univ/scrolbar.h
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// Purpose: wxScrollBar for wxUniversal
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 20.08.00
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// RCS-ID: $Id$
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// Copyright: (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
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// Licence: wxWindows license
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_UNIV_SCROLBAR_H_
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#define _WX_UNIV_SCROLBAR_H_
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#ifdef __GNUG__
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#pragma interface "univscrolbar.h"
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#endif
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class WXDLLEXPORT wxScrollTimer;
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#include "wx/univ/scrarrow.h"
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// ----------------------------------------------------------------------------
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// the actions supported by this control
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// ----------------------------------------------------------------------------
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// scroll the bar
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#define wxACTION_SCROLL_START _T("start") // to the beginning
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#define wxACTION_SCROLL_END _T("end") // to the end
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#define wxACTION_SCROLL_LINE_UP _T("lineup") // one line up/left
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#define wxACTION_SCROLL_PAGE_UP _T("pageup") // one page up/left
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#define wxACTION_SCROLL_LINE_DOWN _T("linedown") // one line down/right
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#define wxACTION_SCROLL_PAGE_DOWN _T("pagedown") // one page down/right
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// the scrollbar thumb may be dragged
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#define wxACTION_SCROLL_THUMB_DRAG _T("thumbdrag")
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#define wxACTION_SCROLL_THUMB_MOVE _T("thumbmove")
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#define wxACTION_SCROLL_THUMB_RELEASE _T("thumbrelease")
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// ----------------------------------------------------------------------------
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// wxScrollBar
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxScrollBar : public wxScrollBarBase,
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public wxControlWithArrows
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{
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public:
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// scrollbar elements: they correspond to wxHT_SCROLLBAR_XXX constants but
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// start from 0 which allows to use them as array indices
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enum Element
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{
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Element_Arrow_Line_1,
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Element_Arrow_Line_2,
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Element_Arrow_Page_1,
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Element_Arrow_Page_2,
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Element_Thumb,
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Element_Bar_1,
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Element_Bar_2,
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Element_Max
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};
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wxScrollBar();
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wxScrollBar(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxSB_HORIZONTAL,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxScrollBarNameStr);
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bool Create(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxSB_HORIZONTAL,
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const wxValidator& validator = wxDefaultValidator,
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const wxString& name = wxScrollBarNameStr);
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virtual ~wxScrollBar();
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// implement base class pure virtuals
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virtual int GetThumbPosition() const;
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virtual int GetThumbSize() const;
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virtual int GetPageSize() const;
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virtual int GetRange() const;
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virtual void SetThumbPosition(int thumbPos);
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virtual void SetScrollbar(int position, int thumbSize,
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int range, int pageSize,
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bool refresh = TRUE);
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// wxScrollBar actions
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void ScrollToStart();
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void ScrollToEnd();
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bool ScrollLines(int nLines);
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bool ScrollPages(int nPages);
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virtual bool PerformAction(const wxControlAction& action,
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long numArg = 0,
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const wxString& strArg = wxEmptyString);
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// wxScrollBar sub elements state (combination of wxCONTROL_XXX)
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void SetState(Element which, int flags);
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int GetState(Element which) const;
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// implement wxControlWithArrows methods
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virtual wxRenderer *GetRenderer() const { return m_renderer; }
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virtual wxWindow *GetWindow() { return this; }
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virtual bool IsVertical() const { return wxScrollBarBase::IsVertical(); }
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virtual int GetArrowState(wxScrollArrows::Arrow arrow) const;
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virtual void SetArrowFlag(wxScrollArrows::Arrow arrow, int flag, bool set);
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virtual bool OnArrow(wxScrollArrows::Arrow arrow);
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virtual wxScrollArrows::Arrow HitTest(const wxPoint& pt) const;
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// for wxControlRenderer::DrawScrollbar() only
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const wxScrollArrows& GetArrows() const { return m_arrows; }
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protected:
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virtual wxSize DoGetBestClientSize() const;
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virtual void DoDraw(wxControlRenderer *renderer);
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virtual wxBorder GetDefaultBorder() const { return wxBORDER_NONE; }
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// event handlers
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void OnIdle(wxIdleEvent& event);
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// SetThumbPosition() helper
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void DoSetThumb(int thumbPos);
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// common part of all ctors
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void Init();
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private:
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// total range of the scrollbar in logical units
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int m_range;
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// the current and previous (after last refresh - this is used for
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// repainting optimisation) size of the thumb in logical units (from 0 to
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// m_range) and its position (from 0 to m_range - m_thumbSize)
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int m_thumbSize,
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m_thumbPos,
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m_thumbPosOld;
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// the page size, i.e. the number of lines by which to scroll when page
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// up/down action is performed
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int m_pageSize;
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// the state of the sub elements
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int m_elementsState[Element_Max];
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// the dirty flag: if set, scrollbar must be updated
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bool m_dirty;
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// the object handling the arrows
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wxScrollArrows m_arrows;
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DECLARE_EVENT_TABLE()
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DECLARE_DYNAMIC_CLASS(wxScrollBar)
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};
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// ----------------------------------------------------------------------------
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// common scrollbar input handler: it manages clicks on the standard scrollbar
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// elements (line arrows, bar, thumb)
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// ----------------------------------------------------------------------------
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class WXDLLEXPORT wxStdScrollBarInputHandler : public wxStdInputHandler
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{
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public:
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// constructor takes a renderer (used for scrollbar hit testing) and the
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// base handler to which all unhandled events are forwarded
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wxStdScrollBarInputHandler(wxRenderer *renderer,
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wxInputHandler *inphand);
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virtual bool HandleKey(wxControl *control,
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const wxKeyEvent& event,
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bool pressed);
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virtual bool HandleMouse(wxControl *control,
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const wxMouseEvent& event);
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virtual bool HandleMouseMove(wxControl *control, const wxMouseEvent& event);
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virtual ~wxStdScrollBarInputHandler();
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// this method is called by wxScrollBarTimer only and may be overridden
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//
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// return TRUE to continue scrolling, FALSE to stop the timer
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virtual bool OnScrollTimer(wxScrollBar *scrollbar,
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const wxControlAction& action);
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protected:
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// the methods which must be overridden in the derived class
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// return TRUE if the mouse button can be used to activate scrollbar, FALSE
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// if not (only left mouse button can do it under Windows, any button under
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// GTK+)
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virtual bool IsAllowedButton(int button) = 0;
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// set or clear the specified flag on the scrollbar element corresponding
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// to m_htLast
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void SetElementState(wxScrollBar *scrollbar, int flag, bool doIt);
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// [un]highlight the scrollbar element corresponding to m_htLast
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virtual void Highlight(wxScrollBar *scrollbar, bool doIt)
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{ SetElementState(scrollbar, wxCONTROL_CURRENT, doIt); }
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// [un]press the scrollbar element corresponding to m_htLast
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virtual void Press(wxScrollBar *scrollbar, bool doIt)
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{ SetElementState(scrollbar, wxCONTROL_PRESSED, doIt); }
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// stop scrolling because we reached the end point
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void StopScrolling(wxScrollBar *scrollbar);
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// get the mouse coordinates in the scrollbar direction from the event
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wxCoord GetMouseCoord(const wxScrollBar *scrollbar,
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const wxMouseEvent& event) const;
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// generate a "thumb move" action for this mouse event
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void HandleThumbMove(wxScrollBar *scrollbar, const wxMouseEvent& event);
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// the window (scrollbar) which has capture or NULL and the flag telling if
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// the mouse is inside the element which captured it or not
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wxWindow *m_winCapture;
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bool m_winHasMouse;
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int m_btnCapture; // the mouse button which has captured mouse
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// the position where we started scrolling by page
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wxPoint m_ptStartScrolling;
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// one of wxHT_SCROLLBAR_XXX value: where has the mouse been last time?
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wxHitTest m_htLast;
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// the renderer (we use it only for hit testing)
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wxRenderer *m_renderer;
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// the offset of the top/left of the scrollbar relative to the mouse to
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// keep during the thumb drag
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int m_ofsMouse;
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// the timer for generating scroll events when the mouse stays pressed on
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// a scrollbar
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wxScrollTimer *m_timerScroll;
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};
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#endif // _WX_UNIV_SCROLBAR_H_
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