// default scrolled window style: scroll in both directions
#define wxScrolledWindowStyle (wxHSCROLL | wxVSCROLL)
+// values for the second argument of wxScrollHelper::ShowScrollbars()
+enum wxScrollbarVisibility
+{
+ wxSHOW_SB_NEVER = -1, // never show the scrollbar at all
+ wxSHOW_SB_DEFAULT, // show scrollbar only if it is needed
+ wxSHOW_SB_ALWAYS // always show scrollbar, even if not needed
+};
+
// ----------------------------------------------------------------------------
// The hierarchy of scrolling classes is a bit complicated because we want to
// put as much functionality as possible in a mix-in class not deriving from
//
// So we have
//
-// wxScrollHelper
+// wxScrollHelperBase
// |
// |
// \|/
-// wxWindow wxScrollHelperNative
+// wxWindow wxScrollHelper
// | \ / /
// | \ / /
// | _| |_ /
//
// ----------------------------------------------------------------------------
-class WXDLLIMPEXP_CORE wxScrollHelper
+class WXDLLIMPEXP_CORE wxScrollHelperBase
{
public:
// ctor must be given the associated window
- wxScrollHelper(wxWindow *winToScroll);
- virtual ~wxScrollHelper();
+ wxScrollHelperBase(wxWindow *winToScroll);
+ virtual ~wxScrollHelperBase();
// configure the scrolling
virtual void SetScrollbars(int pixelsPerUnitX, int pixelsPerUnitY,
bool noRefresh = false );
// scroll to the given (in logical coords) position
- virtual void Scroll(int x, int y);
+ //
+ // notice that for backwards compatibility reasons Scroll() is virtual as
+ // the existing code could override it but new code should override
+ // DoScroll() instead
+ virtual void Scroll(int x, int y) { DoScroll(x, y); }
+ virtual void Scroll(const wxPoint& pt) { DoScroll(pt.x, pt.y); }
// get/set the page size for this orientation (wxVERTICAL/wxHORIZONTAL)
int GetScrollPageSize(int orient) const;
void SetScrollPageSize(int orient, int pageSize);
- // get the number of lines the window can scroll,
+ // get the number of lines the window can scroll,
// returns 0 if no scrollbars are there.
int GetScrollLines( int orient ) const;
void SetScrollRate( int xstep, int ystep );
// get the size of one logical unit in physical ones
- virtual void GetScrollPixelsPerUnit(int *pixelsPerUnitX,
- int *pixelsPerUnitY) const;
+ void GetScrollPixelsPerUnit(int *pixelsPerUnitX, int *pixelsPerUnitY) const;
+
+ // Set scrollbar visibility: it is possible to show scrollbar only if it is
+ // needed (i.e. if our virtual size is greater than the current size of the
+ // associated window), always (as wxALWAYS_SHOW_SB style does) or never (in
+ // which case you should provide some other way to scroll the window as the
+ // user wouldn't be able to do it at all)
+ void ShowScrollbars(wxScrollbarVisibility horz, wxScrollbarVisibility vert)
+ {
+ DoShowScrollbars(horz, vert);
+ }
// Enable/disable Windows scrolling in either direction. If true, wxWidgets
// scrolls the canvas and only a bit of the canvas is invalidated; no
virtual void EnableScrolling(bool x_scrolling, bool y_scrolling);
// Get the view start
- virtual void GetViewStart(int *x, int *y) const;
+ void GetViewStart(int *x, int *y) const { DoGetViewStart(x, y); }
+
+ wxPoint GetViewStart() const
+ {
+ wxPoint pt;
+ DoGetViewStart(&pt.x, &pt.y);
+ return pt;
+ }
// Set the scale factor, used in PrepareDC
void SetScale(double xs, double ys) { m_scaleX = xs; m_scaleY = ys; }
return p2;
}
- virtual void DoCalcScrolledPosition(int x, int y, int *xx, int *yy) const;
- virtual void DoCalcUnscrolledPosition(int x, int y, int *xx, int *yy) const;
+ void DoCalcScrolledPosition(int x, int y, int *xx, int *yy) const;
+ void DoCalcUnscrolledPosition(int x, int y, int *xx, int *yy) const;
// Adjust the scrollbars
- virtual void AdjustScrollbars(void);
+ virtual void AdjustScrollbars() = 0;
// Calculate scroll increment
- virtual int CalcScrollInc(wxScrollWinEvent& event);
+ int CalcScrollInc(wxScrollWinEvent& event);
// Normally the wxScrolledWindow will scroll itself, but in some rare
// occasions you might want it to scroll [part of] another window (e.g. a
// child of it in order to scroll only a portion the area between the
// scrollbars (spreadsheet: only cell area will move).
- virtual void SetTargetWindow(wxWindow *target);
- virtual wxWindow *GetTargetWindow() const;
+ void SetTargetWindow(wxWindow *target);
+ wxWindow *GetTargetWindow() const;
void SetTargetRect(const wxRect& rect) { m_rectToScroll = rect; }
wxRect GetTargetRect() const { return m_rectToScroll; }
#endif // wxUSE_MOUSEWHEEL
void HandleOnChildFocus(wxChildFocusEvent& event);
- // FIXME: this is needed for now for wxPlot compilation, should be removed
- // once it is fixed!
- void OnScroll(wxScrollWinEvent& event) { HandleOnScroll(event); }
+#if WXWIN_COMPATIBILITY_2_8
+ wxDEPRECATED(
+ void OnScroll(wxScrollWinEvent& event) { HandleOnScroll(event); }
+ )
+#endif // WXWIN_COMPATIBILITY_2_8
protected:
// get pointer to our scroll rect if we use it or NULL
*h = size.y;
}
+ // implementation of public methods with the same name
+ virtual void DoGetViewStart(int *x, int *y) const;
+ virtual void DoScroll(int x, int y) = 0;
+ virtual void DoShowScrollbars(wxScrollbarVisibility horz,
+ wxScrollbarVisibility vert) = 0;
+
// implementations of various wxWindow virtual methods which should be
// forwarded to us (this can be done by WX_FORWARD_TO_SCROLL_HELPER())
bool ScrollLayout();
// in wxScrollHelperEvtHandler::ProcessEvent()
void ResetDrawnFlag();
+ // this function should be overridden to return the size available for
+ // m_targetWindow inside m_win of the given size
+ //
+ // the default implementation is only good for m_targetWindow == m_win
+ // case, if we're scrolling a subwindow you must override this method
+ virtual wxSize GetSizeAvailableForScrollTarget(const wxSize& size)
+ {
+ // returning just size from here is wrong but it was decided that it is
+ // not wrong enough to break the existing code (which doesn't override
+ // this recently added function at all) by adding this assert
+ //
+ // wxASSERT_MSG( m_targetWindow == m_win, "must be overridden" );
+
+ return size;
+ }
+
double m_scaleX;
double m_scaleY;
wxScrollHelperEvtHandler *m_handler;
- DECLARE_NO_COPY_CLASS(wxScrollHelper)
+ DECLARE_NO_COPY_CLASS(wxScrollHelperBase)
};
// this macro can be used in a wxScrollHelper-derived class to forward wxWindow
virtual wxSize GetBestVirtualSize() const \
{ return ScrollGetBestVirtualSize(); }
-// include the declaration of wxScrollHelperNative if needed
+// include the declaration of the real wxScrollHelper
#if defined(__WXGTK20__) && !defined(__WXUNIVERSAL__)
#include "wx/gtk/scrolwin.h"
#elif defined(__WXGTK__) && !defined(__WXUNIVERSAL__)
#include "wx/gtk1/scrolwin.h"
#else
- typedef wxScrollHelper wxScrollHelperNative;
+ #define wxHAS_GENERIC_SCROLLWIN
+ #include "wx/generic/scrolwin.h"
#endif
// ----------------------------------------------------------------------------
struct WXDLLIMPEXP_CORE wxScrolledT_Helper
{
static wxSize FilterBestSize(const wxWindow *win,
- const wxScrollHelperNative *helper,
+ const wxScrollHelper *helper,
const wxSize& origBest);
#ifdef __WXMSW__
static WXLRESULT FilterMSWWindowProc(WXUINT nMsg, WXLRESULT origResult);
// not always desirable.
template<class T>
class WXDLLIMPEXP_CORE wxScrolled : public T,
- public wxScrollHelperNative,
+ public wxScrollHelper,
private wxScrolledT_Helper
{
public:
- wxScrolled() : wxScrollHelperNative(this) { }
+ wxScrolled() : wxScrollHelper(this) { }
wxScrolled(wxWindow *parent,
wxWindowID winid = wxID_ANY,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = wxScrolledWindowStyle,
const wxString& name = wxPanelNameStr)
- : wxScrollHelperNative(this)
+ : wxScrollHelper(this)
{
Create(parent, winid, pos, size, style, name);
}
projects / wxWidgets.git / blobdiff