refactored wxGTK scrolling: it has now fully-functioning wxScrollHelper and a lot of duplicate code was removed
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@35875 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
@@ -2,7 +2,7 @@
|
||||
// Name: wx/gtk/scrolwin.h
|
||||
// Purpose: wxScrolledWindow class
|
||||
// Author: Robert Roebling
|
||||
// Modified by:
|
||||
// Modified by: Vadim Zeitlin (2005-10-10): wxScrolledWindow is now common
|
||||
// Created: 01/02/97
|
||||
// RCS-ID: $Id$
|
||||
// Copyright: (c) Robert Roebling
|
||||
@@ -12,182 +12,43 @@
|
||||
#ifndef _WX_GTK_SCROLLWIN_H_
|
||||
#define _WX_GTK_SCROLLWIN_H_
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// headers and constants
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
#include "wx/window.h"
|
||||
#include "wx/panel.h"
|
||||
|
||||
WXDLLEXPORT_DATA(extern const wxChar*) wxPanelNameStr;
|
||||
|
||||
// default scrolled window style
|
||||
#ifndef wxScrolledWindowStyle
|
||||
#define wxScrolledWindowStyle (wxHSCROLL | wxVSCROLL)
|
||||
#endif
|
||||
|
||||
// ----------------------------------------------------------------------------
|
||||
// wxScrolledWindow
|
||||
// ----------------------------------------------------------------------------
|
||||
|
||||
class WXDLLEXPORT wxScrolledWindow : public wxPanel
|
||||
class WXDLLEXPORT wxScrollHelperNative : public wxScrollHelper
|
||||
{
|
||||
public:
|
||||
wxScrolledWindow()
|
||||
{ Init(); }
|
||||
// default ctor doesn't do anything
|
||||
wxScrollHelperNative(wxWindow *win) : wxScrollHelper(win) { }
|
||||
|
||||
wxScrolledWindow(wxWindow *parent,
|
||||
wxWindowID id = -1,
|
||||
const wxPoint& pos = wxDefaultPosition,
|
||||
const wxSize& size = wxDefaultSize,
|
||||
long style = wxScrolledWindowStyle,
|
||||
const wxString& name = wxPanelNameStr)
|
||||
{ Create(parent, id, pos, size, style, name); }
|
||||
|
||||
void Init();
|
||||
|
||||
bool Create(wxWindow *parent,
|
||||
wxWindowID id,
|
||||
const wxPoint& pos = wxDefaultPosition,
|
||||
const wxSize& size = wxDefaultSize,
|
||||
long style = wxScrolledWindowStyle,
|
||||
const wxString& name = wxPanelNameStr);
|
||||
|
||||
// Normally the wxScrolledWindow will scroll itself, but in
|
||||
// some rare occasions you might want it to scroll 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, bool pushEventHandler = FALSE );
|
||||
virtual wxWindow *GetTargetWindow() const;
|
||||
|
||||
// Set the scrolled area of the window.
|
||||
virtual void DoSetVirtualSize( int x, int y );
|
||||
|
||||
// wxWindow's GetBestVirtualSize returns the actual window size,
|
||||
// whereas we want to return the virtual size
|
||||
virtual wxSize GetBestVirtualSize() const;
|
||||
|
||||
// Return the size best suited for the current window
|
||||
// (this isn't a virtual size, this is a sensible size for the window)
|
||||
virtual wxSize DoGetBestSize() const;
|
||||
|
||||
// Set the x, y scrolling increments.
|
||||
void SetScrollRate( int xstep, int ystep );
|
||||
|
||||
// Number of pixels per user unit (0 or -1 for no scrollbar)
|
||||
// Length of virtual canvas in user units
|
||||
// Length of page in user units
|
||||
// Default action is to set the virtual size and alter scrollbars
|
||||
// accordingly.
|
||||
virtual void SetScrollbars(int pixelsPerUnitX, int pixelsPerUnitY,
|
||||
int noUnitsX, int noUnitsY,
|
||||
int xPos = 0, int yPos = 0,
|
||||
bool noRefresh = FALSE );
|
||||
|
||||
// Physically scroll the window
|
||||
virtual void Scroll(int x_pos, int y_pos);
|
||||
|
||||
int GetScrollPageSize(int orient) const;
|
||||
void SetScrollPageSize(int orient, int pageSize);
|
||||
|
||||
virtual void GetScrollPixelsPerUnit(int *x_unit, int *y_unit) const;
|
||||
|
||||
// Enable/disable Windows scrolling in either direction.
|
||||
// If TRUE, wxWidgets scrolls the canvas and only a bit of
|
||||
// the canvas is invalidated; no Clear() is necessary.
|
||||
// If FALSE, the whole canvas is invalidated and a Clear() is
|
||||
// necessary. Disable for when the scroll increment is used
|
||||
// to actually scroll a non-constant distance
|
||||
virtual void EnableScrolling(bool x_scrolling, bool y_scrolling);
|
||||
|
||||
// Get the view start
|
||||
virtual void GetViewStart(int *x, int *y) const;
|
||||
|
||||
// translate between scrolled and unscrolled coordinates
|
||||
void CalcScrolledPosition(int x, int y, int *xx, int *yy) const
|
||||
{ DoCalcScrolledPosition(x, y, xx, yy); }
|
||||
wxPoint CalcScrolledPosition(const wxPoint& pt) const
|
||||
{
|
||||
wxPoint p2;
|
||||
DoCalcScrolledPosition(pt.x, pt.y, &p2.x, &p2.y);
|
||||
return p2;
|
||||
}
|
||||
|
||||
void CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const
|
||||
{ DoCalcUnscrolledPosition(x, y, xx, yy); }
|
||||
wxPoint CalcUnscrolledPosition(const wxPoint& pt) const
|
||||
{
|
||||
wxPoint p2;
|
||||
DoCalcUnscrolledPosition(pt.x, pt.y, &p2.x, &p2.y);
|
||||
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;
|
||||
|
||||
// Override this function to draw the graphic (or just process EVT_PAINT)
|
||||
virtual void OnDraw(wxDC& WXUNUSED(dc)) {}
|
||||
|
||||
// Override this function if you don't want to have wxScrolledWindow
|
||||
// automatically change the origin according to the scroll position.
|
||||
void PrepareDC(wxDC& dc) { DoPrepareDC(dc); }
|
||||
|
||||
// lay out the window and its children
|
||||
virtual bool Layout();
|
||||
|
||||
// Adjust the scrollbars
|
||||
int noUnitsX, int noUnitsY,
|
||||
int xPos = 0, int yPos = 0,
|
||||
bool noRefresh = false);
|
||||
virtual void AdjustScrollbars();
|
||||
|
||||
// Set the scale factor, used in PrepareDC
|
||||
void SetScale(double xs, double ys) { m_scaleX = xs; m_scaleY = ys; }
|
||||
double GetScaleX() const { return m_scaleX; }
|
||||
double GetScaleY() const { return m_scaleY; }
|
||||
|
||||
// implementation from now on
|
||||
void OnScroll(wxScrollWinEvent& event);
|
||||
void OnSize(wxSizeEvent& event);
|
||||
void OnPaint(wxPaintEvent& event);
|
||||
void OnChar(wxKeyEvent& event);
|
||||
|
||||
void GtkVScroll( float value, unsigned int scroll_type );
|
||||
void GtkHScroll( float value, unsigned int scroll_type );
|
||||
void GtkVConnectEvent();
|
||||
void GtkHConnectEvent();
|
||||
void GtkVDisconnectEvent();
|
||||
void GtkHDisconnectEvent();
|
||||
|
||||
// Calculate scroll increment
|
||||
virtual int CalcScrollInc(wxScrollWinEvent& event);
|
||||
|
||||
// Overridden from wxWidgets due callback being static
|
||||
virtual void SetScrollPos( int orient, int pos, bool refresh = TRUE );
|
||||
|
||||
virtual void DoPrepareDC(wxDC& dc);
|
||||
virtual void Scroll(int x, int y);
|
||||
|
||||
protected:
|
||||
wxWindow *m_targetWindow;
|
||||
int m_xScrollPixelsPerLine;
|
||||
int m_yScrollPixelsPerLine;
|
||||
bool m_xScrollingEnabled;
|
||||
bool m_yScrollingEnabled;
|
||||
// this does (each) half of AdjustScrollbars() work
|
||||
void DoAdjustScrollbar(GtkAdjustment *adj,
|
||||
int pixelsPerLine,
|
||||
int winSize,
|
||||
int virtSize,
|
||||
int *pos,
|
||||
int *lines,
|
||||
int *linesPerPage);
|
||||
|
||||
// FIXME: these next four members are duplicated in the GtkAdjustment
|
||||
// members of wxWindow. Can they be safely removed from here?
|
||||
|
||||
int m_xScrollPosition;
|
||||
int m_yScrollPosition;
|
||||
int m_xScrollLinesPerPage;
|
||||
int m_yScrollLinesPerPage;
|
||||
|
||||
double m_scaleY,m_scaleX;
|
||||
// and this does the same for Scroll()
|
||||
void DoScroll(int orient,
|
||||
GtkAdjustment *adj,
|
||||
int pos,
|
||||
int pixelsPerLine,
|
||||
int *posOld);
|
||||
|
||||
private:
|
||||
DECLARE_EVENT_TABLE()
|
||||
DECLARE_DYNAMIC_CLASS(wxScrolledWindow)
|
||||
DECLARE_NO_COPY_CLASS(wxScrollHelperNative)
|
||||
};
|
||||
|
||||
#endif
|
||||
// _WX_GTK_SCROLLWIN_H_
|
||||
#endif // _WX_GTK_SCROLLWIN_H_
|
||||
|
||||
// vi:sts=4:sw=4:et
|
||||
|
||||
Reference in New Issue
Block a user