284 lines
10 KiB
C++
284 lines
10 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/univ/scrolbar.h
|
|
// Purpose: wxScrollBar for wxUniversal
|
|
// Author: Vadim Zeitlin
|
|
// Modified by:
|
|
// Created: 20.08.00
|
|
// RCS-ID: $Id: scrolbar.h 42716 2006-10-30 12:33:25Z VS $
|
|
// Copyright: (c) 2000 SciTech Software, Inc. (www.scitechsoft.com)
|
|
// Licence: wxWindows licence
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _WX_UNIV_SCROLBAR_H_
|
|
#define _WX_UNIV_SCROLBAR_H_
|
|
|
|
class WXDLLEXPORT wxScrollTimer;
|
|
|
|
#include "wx/univ/scrarrow.h"
|
|
#include "wx/renderer.h"
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// the actions supported by this control
|
|
// ----------------------------------------------------------------------------
|
|
|
|
// scroll the bar
|
|
#define wxACTION_SCROLL_START _T("start") // to the beginning
|
|
#define wxACTION_SCROLL_END _T("end") // to the end
|
|
#define wxACTION_SCROLL_LINE_UP _T("lineup") // one line up/left
|
|
#define wxACTION_SCROLL_PAGE_UP _T("pageup") // one page up/left
|
|
#define wxACTION_SCROLL_LINE_DOWN _T("linedown") // one line down/right
|
|
#define wxACTION_SCROLL_PAGE_DOWN _T("pagedown") // one page down/right
|
|
|
|
// the scrollbar thumb may be dragged
|
|
#define wxACTION_SCROLL_THUMB_DRAG _T("thumbdrag")
|
|
#define wxACTION_SCROLL_THUMB_MOVE _T("thumbmove")
|
|
#define wxACTION_SCROLL_THUMB_RELEASE _T("thumbrelease")
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// wxScrollBar
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class WXDLLEXPORT wxScrollBar : public wxScrollBarBase,
|
|
public wxControlWithArrows
|
|
{
|
|
public:
|
|
// scrollbar elements: they correspond to wxHT_SCROLLBAR_XXX constants but
|
|
// start from 0 which allows to use them as array indices
|
|
enum Element
|
|
{
|
|
Element_Arrow_Line_1,
|
|
Element_Arrow_Line_2,
|
|
Element_Arrow_Page_1,
|
|
Element_Arrow_Page_2,
|
|
Element_Thumb,
|
|
Element_Bar_1,
|
|
Element_Bar_2,
|
|
Element_Max
|
|
};
|
|
|
|
wxScrollBar();
|
|
wxScrollBar(wxWindow *parent,
|
|
wxWindowID id,
|
|
const wxPoint& pos = wxDefaultPosition,
|
|
const wxSize& size = wxDefaultSize,
|
|
long style = wxSB_HORIZONTAL,
|
|
const wxValidator& validator = wxDefaultValidator,
|
|
const wxString& name = wxScrollBarNameStr);
|
|
|
|
bool Create(wxWindow *parent,
|
|
wxWindowID id,
|
|
const wxPoint& pos = wxDefaultPosition,
|
|
const wxSize& size = wxDefaultSize,
|
|
long style = wxSB_HORIZONTAL,
|
|
const wxValidator& validator = wxDefaultValidator,
|
|
const wxString& name = wxScrollBarNameStr);
|
|
|
|
virtual ~wxScrollBar();
|
|
|
|
// implement base class pure virtuals
|
|
virtual int GetThumbPosition() const;
|
|
virtual int GetThumbSize() const;
|
|
virtual int GetPageSize() const;
|
|
virtual int GetRange() const;
|
|
|
|
virtual void SetThumbPosition(int thumbPos);
|
|
virtual void SetScrollbar(int position, int thumbSize,
|
|
int range, int pageSize,
|
|
bool refresh = true);
|
|
|
|
// wxScrollBar actions
|
|
void ScrollToStart();
|
|
void ScrollToEnd();
|
|
bool ScrollLines(int nLines);
|
|
bool ScrollPages(int nPages);
|
|
|
|
virtual bool PerformAction(const wxControlAction& action,
|
|
long numArg = 0,
|
|
const wxString& strArg = wxEmptyString);
|
|
|
|
static wxInputHandler *GetStdInputHandler(wxInputHandler *handlerDef);
|
|
virtual wxInputHandler *DoGetStdInputHandler(wxInputHandler *handlerDef)
|
|
{
|
|
return GetStdInputHandler(handlerDef);
|
|
}
|
|
|
|
// scrollbars around a normal window should not receive the focus
|
|
virtual bool AcceptsFocus() const;
|
|
|
|
// wxScrollBar sub elements state (combination of wxCONTROL_XXX)
|
|
void SetState(Element which, int flags);
|
|
int GetState(Element which) const;
|
|
|
|
// implement wxControlWithArrows methods
|
|
virtual wxRenderer *GetRenderer() const { return m_renderer; }
|
|
virtual wxWindow *GetWindow() { return this; }
|
|
virtual bool IsVertical() const { return wxScrollBarBase::IsVertical(); }
|
|
virtual int GetArrowState(wxScrollArrows::Arrow arrow) const;
|
|
virtual void SetArrowFlag(wxScrollArrows::Arrow arrow, int flag, bool set);
|
|
virtual bool OnArrow(wxScrollArrows::Arrow arrow);
|
|
virtual wxScrollArrows::Arrow HitTestArrow(const wxPoint& pt) const;
|
|
|
|
// for wxControlRenderer::DrawScrollbar() only
|
|
const wxScrollArrows& GetArrows() const { return m_arrows; }
|
|
|
|
// returns one of wxHT_SCROLLBAR_XXX constants
|
|
wxHitTest HitTestBar(const wxPoint& pt) const;
|
|
|
|
// idle processing
|
|
virtual void OnInternalIdle();
|
|
|
|
protected:
|
|
virtual wxSize DoGetBestClientSize() const;
|
|
virtual void DoDraw(wxControlRenderer *renderer);
|
|
virtual wxBorder GetDefaultBorder() const { return wxBORDER_NONE; }
|
|
|
|
// forces update of thumb's visual appearence (does nothing if m_dirty=false)
|
|
void UpdateThumb();
|
|
|
|
// SetThumbPosition() helper
|
|
void DoSetThumb(int thumbPos);
|
|
|
|
// common part of all ctors
|
|
void Init();
|
|
|
|
// is this scrollbar attached to a window or a standalone control?
|
|
bool IsStandalone() const;
|
|
|
|
// scrollbar geometry methods:
|
|
|
|
// gets the bounding box for a scrollbar element for the given (by default
|
|
// - current) thumb position
|
|
wxRect GetScrollbarRect(wxScrollBar::Element elem, int thumbPos = -1) const;
|
|
|
|
// returns the size of the scrollbar shaft excluding the arrows
|
|
wxCoord GetScrollbarSize() const;
|
|
|
|
// translate the scrollbar position (in logical units) into physical
|
|
// coordinate (in pixels) and the other way round
|
|
wxCoord ScrollbarToPixel(int thumbPos = -1);
|
|
int PixelToScrollbar(wxCoord coord);
|
|
|
|
// return the starting and ending positions, in pixels, of the thumb of a
|
|
// scrollbar with the given logical position, thumb size and range and the
|
|
// given physical length
|
|
static void GetScrollBarThumbSize(wxCoord length,
|
|
int thumbPos,
|
|
int thumbSize,
|
|
int range,
|
|
wxCoord *thumbStart,
|
|
wxCoord *thumbEnd);
|
|
|
|
private:
|
|
// total range of the scrollbar in logical units
|
|
int m_range;
|
|
|
|
// the current and previous (after last refresh - this is used for
|
|
// repainting optimisation) size of the thumb in logical units (from 0 to
|
|
// m_range) and its position (from 0 to m_range - m_thumbSize)
|
|
int m_thumbSize,
|
|
m_thumbPos,
|
|
m_thumbPosOld;
|
|
|
|
// the page size, i.e. the number of lines by which to scroll when page
|
|
// up/down action is performed
|
|
int m_pageSize;
|
|
|
|
// the state of the sub elements
|
|
int m_elementsState[Element_Max];
|
|
|
|
// the dirty flag: if set, scrollbar must be updated
|
|
bool m_dirty;
|
|
|
|
// the object handling the arrows
|
|
wxScrollArrows m_arrows;
|
|
|
|
friend WXDLLEXPORT class wxControlRenderer; // for geometry methods
|
|
friend class wxStdScrollBarInputHandler; // for geometry methods
|
|
|
|
DECLARE_EVENT_TABLE()
|
|
DECLARE_DYNAMIC_CLASS(wxScrollBar)
|
|
};
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Standard scrollbar input handler which can be used as a base class
|
|
// ----------------------------------------------------------------------------
|
|
|
|
class WXDLLEXPORT wxStdScrollBarInputHandler : public wxStdInputHandler
|
|
{
|
|
public:
|
|
// constructor takes a renderer (used for scrollbar hit testing) and the
|
|
// base handler to which all unhandled events are forwarded
|
|
wxStdScrollBarInputHandler(wxRenderer *renderer,
|
|
wxInputHandler *inphand);
|
|
|
|
virtual bool HandleKey(wxInputConsumer *consumer,
|
|
const wxKeyEvent& event,
|
|
bool pressed);
|
|
virtual bool HandleMouse(wxInputConsumer *consumer,
|
|
const wxMouseEvent& event);
|
|
virtual bool HandleMouseMove(wxInputConsumer *consumer, const wxMouseEvent& event);
|
|
|
|
virtual ~wxStdScrollBarInputHandler();
|
|
|
|
// this method is called by wxScrollBarTimer only and may be overridden
|
|
//
|
|
// return true to continue scrolling, false to stop the timer
|
|
virtual bool OnScrollTimer(wxScrollBar *scrollbar,
|
|
const wxControlAction& action);
|
|
|
|
protected:
|
|
// return true if the mouse button can be used to activate scrollbar, false
|
|
// if not (any button under GTK+ unlike left button only which is default)
|
|
virtual bool IsAllowedButton(int button) const
|
|
{ return button == wxMOUSE_BTN_LEFT; }
|
|
|
|
// set or clear the specified flag on the scrollbar element corresponding
|
|
// to m_htLast
|
|
void SetElementState(wxScrollBar *scrollbar, int flag, bool doIt);
|
|
|
|
// [un]highlight the scrollbar element corresponding to m_htLast
|
|
virtual void Highlight(wxScrollBar *scrollbar, bool doIt)
|
|
{ SetElementState(scrollbar, wxCONTROL_CURRENT, doIt); }
|
|
|
|
// [un]press the scrollbar element corresponding to m_htLast
|
|
virtual void Press(wxScrollBar *scrollbar, bool doIt)
|
|
{ SetElementState(scrollbar, wxCONTROL_PRESSED, doIt); }
|
|
|
|
// stop scrolling because we reached the end point
|
|
void StopScrolling(wxScrollBar *scrollbar);
|
|
|
|
// get the mouse coordinates in the scrollbar direction from the event
|
|
wxCoord GetMouseCoord(const wxScrollBar *scrollbar,
|
|
const wxMouseEvent& event) const;
|
|
|
|
// generate a "thumb move" action for this mouse event
|
|
void HandleThumbMove(wxScrollBar *scrollbar, const wxMouseEvent& event);
|
|
|
|
|
|
// the window (scrollbar) which has capture or NULL and the flag telling if
|
|
// the mouse is inside the element which captured it or not
|
|
wxWindow *m_winCapture;
|
|
bool m_winHasMouse;
|
|
int m_btnCapture; // the mouse button which has captured mouse
|
|
|
|
// the position where we started scrolling by page
|
|
wxPoint m_ptStartScrolling;
|
|
|
|
// one of wxHT_SCROLLBAR_XXX value: where has the mouse been last time?
|
|
wxHitTest m_htLast;
|
|
|
|
// the renderer (we use it only for hit testing)
|
|
wxRenderer *m_renderer;
|
|
|
|
// the offset of the top/left of the scrollbar relative to the mouse to
|
|
// keep during the thumb drag
|
|
int m_ofsMouse;
|
|
|
|
// the timer for generating scroll events when the mouse stays pressed on
|
|
// a scrollbar
|
|
wxScrollTimer *m_timerScroll;
|
|
};
|
|
|
|
#endif // _WX_UNIV_SCROLBAR_H_
|
|
|