window.h

来自「A*算法 A*算法 A*算法 A*算法A*算法A*算法」· C头文件 代码 · 共 1,538 行 · 第 1/4 页

///////////////////////////////////////////////////////////////////////////////
// Name:        wx/window.h
// Purpose:     wxWindowBase class - the interface of wxWindow
// Author:      Vadim Zeitlin
// Modified by: Ron Lee
// Created:     01/02/97
// RCS-ID:      $Id: window.h,v 1.189.2.2 2006/01/31 04:02:41 RD Exp $
// Copyright:   (c) Vadim Zeitlin
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#ifndef _WX_WINDOW_H_BASE_
#define _WX_WINDOW_H_BASE_

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
    #pragma interface "windowbase.h"
#endif

// ----------------------------------------------------------------------------
// headers which we must include here
// ----------------------------------------------------------------------------

#include "wx/event.h"           // the base class

#include "wx/list.h"            // defines wxWindowList

#include "wx/cursor.h"          // we have member variables of these classes
#include "wx/font.h"            // so we can't do without them
#include "wx/colour.h"
#include "wx/region.h"
#include "wx/utils.h"

#include "wx/validate.h"        // for wxDefaultValidator (always include it)

#if wxUSE_PALETTE
    #include "wx/palette.h"
#endif // wxUSE_PALETTE

#if wxUSE_ACCEL
    #include "wx/accel.h"
#endif // wxUSE_ACCEL

#if wxUSE_ACCESSIBILITY
#include "wx/access.h"
#endif

// when building wxUniv/Foo we don't want the code for native menu use to be
// compiled in - it should only be used when building real wxFoo
#ifdef __WXUNIVERSAL__
    #define wxUSE_MENUS_NATIVE 0
#else // !__WXUNIVERSAL__
    #define wxUSE_MENUS_NATIVE wxUSE_MENUS
#endif // __WXUNIVERSAL__/!__WXUNIVERSAL__

// ----------------------------------------------------------------------------
// forward declarations
// ----------------------------------------------------------------------------

class WXDLLEXPORT wxCaret;
class WXDLLEXPORT wxControl;
class WXDLLEXPORT wxCursor;
class WXDLLEXPORT wxDC;
class WXDLLEXPORT wxDropTarget;
class WXDLLEXPORT wxItemResource;
class WXDLLEXPORT wxLayoutConstraints;
class WXDLLEXPORT wxResourceTable;
class WXDLLEXPORT wxSizer;
class WXDLLEXPORT wxToolTip;
class WXDLLEXPORT wxWindowBase;
class WXDLLEXPORT wxWindow;

#if wxUSE_ACCESSIBILITY
class WXDLLEXPORT wxAccessible;
#endif

// ----------------------------------------------------------------------------
// helper stuff used by wxWindow
// ----------------------------------------------------------------------------

// struct containing all the visual attributes of a control
struct WXDLLEXPORT wxVisualAttributes
{
    // the font used for control label/text inside it
    wxFont font;

    // the foreground colour
    wxColour colFg;

    // the background colour, may be wxNullColour if the controls background
    // colour is not solid
    wxColour colBg;
};

// different window variants, on platforms like eg mac uses different
// rendering sizes
enum wxWindowVariant
{
    wxWINDOW_VARIANT_NORMAL,  // Normal size
    wxWINDOW_VARIANT_SMALL,   // Smaller size (about 25 % smaller than normal)
    wxWINDOW_VARIANT_MINI,    // Mini size (about 33 % smaller than normal)
    wxWINDOW_VARIANT_LARGE,   // Large size (about 25 % larger than normal)
    wxWINDOW_VARIANT_MAX
};

#if wxUSE_SYSTEM_OPTIONS
    #define wxWINDOW_DEFAULT_VARIANT wxT("window-default-variant")
#endif

// ----------------------------------------------------------------------------
// (pseudo)template list classes
// ----------------------------------------------------------------------------

WX_DECLARE_LIST_3(wxWindow, wxWindowBase, wxWindowList, wxWindowListNode, class WXDLLEXPORT);

// ----------------------------------------------------------------------------
// global variables
// ----------------------------------------------------------------------------

extern WXDLLEXPORT_DATA(wxWindowList) wxTopLevelWindows;

// ----------------------------------------------------------------------------
// wxWindowBase is the base class for all GUI controls/widgets, this is the public
// interface of this class.
//
// Event handler: windows have themselves as their event handlers by default,
// but their event handlers could be set to another object entirely. This
// separation can reduce the amount of derivation required, and allow
// alteration of a window's functionality (e.g. by a resource editor that
// temporarily switches event handlers).
// ----------------------------------------------------------------------------

class WXDLLEXPORT wxWindowBase : public wxEvtHandler
{
public:
    // creating the window
    // -------------------

        // default ctor, initializes everything which can be initialized before
        // Create()
    wxWindowBase() ;

        // pseudo ctor (can't be virtual, called from ctor)
    bool CreateBase(wxWindowBase *parent,
                    wxWindowID winid,
                    const wxPoint& pos = wxDefaultPosition,
                    const wxSize& size = wxDefaultSize,
                    long style = 0,
                    const wxValidator& validator = wxDefaultValidator,
                    const wxString& name = wxPanelNameStr);

    virtual ~wxWindowBase();

    // deleting the window
    // -------------------

        // ask the window to close itself, return true if the event handler
        // honoured our request
    bool Close( bool force = false );

        // the following functions delete the C++ objects (the window itself
        // or its children) as well as the GUI windows and normally should
        // never be used directly

        // delete window unconditionally (dangerous!), returns true if ok
    virtual bool Destroy();
        // delete all children of this window, returns true if ok
    bool DestroyChildren();

        // is the window being deleted?
    bool IsBeingDeleted() const { return m_isBeingDeleted; }

    // window attributes
    // -----------------

        // NB: in future versions of wxWidgets Set/GetTitle() will only work
        //     with the top level windows (such as dialogs and frames) and
        //     Set/GetLabel() only with the other ones (i.e. all controls).

        // the title (or label, see below) of the window: the text which the
        // window shows
    virtual void SetTitle( const wxString& WXUNUSED(title) ) {}
    virtual wxString GetTitle() const { return wxEmptyString; }

        // label is just the same as the title (but for, e.g., buttons it
        // makes more sense to speak about labels)
    virtual void SetLabel(const wxString& label) { SetTitle(label); }
    virtual wxString GetLabel() const { return GetTitle(); }

        // the window name is used for ressource setting in X, it is not the
        // same as the window title/label
    virtual void SetName( const wxString &name ) { m_windowName = name; }
    virtual wxString GetName() const { return m_windowName; }

    // sets the window variant, calls internally DoSetVariant if variant has changed
    void SetWindowVariant( wxWindowVariant variant ) ;
    wxWindowVariant GetWindowVariant() const { return m_windowVariant ; }


        // window id uniquely identifies the window among its siblings unless
        // it is wxID_ANY which means "don't care"
    void SetId( wxWindowID winid ) { m_windowId = winid; }
    wxWindowID GetId() const { return m_windowId; }

        // generate a control id for the controls which were not given one by
        // user
    static int NewControlId() { return --ms_lastControlId; }
        // get the id of the control following the one with the given
        // (autogenerated) id
    static int NextControlId(int winid) { return winid - 1; }
        // get the id of the control preceding the one with the given
        // (autogenerated) id
    static int PrevControlId(int winid) { return winid + 1; }

    // moving/resizing
    // ---------------

        // set the window size and/or position
    void SetSize( int x, int y, int width, int height,
                  int sizeFlags = wxSIZE_AUTO )
        {  DoSetSize(x, y, width, height, sizeFlags); }

    void SetSize( int width, int height )
        { DoSetSize( wxDefaultCoord, wxDefaultCoord, width, height, wxSIZE_USE_EXISTING ); }

    void SetSize( const wxSize& size )
        { SetSize( size.x, size.y); }

    void SetSize(const wxRect& rect, int sizeFlags = wxSIZE_AUTO)
        { DoSetSize(rect.x, rect.y, rect.width, rect.height, sizeFlags); }

    void Move(int x, int y, int flags = wxSIZE_USE_EXISTING)
        { DoSetSize(x, y, wxDefaultCoord, wxDefaultCoord, flags); }

    void Move(const wxPoint& pt, int flags = wxSIZE_USE_EXISTING)
        { Move(pt.x, pt.y, flags); }

        // Z-order
    virtual void Raise() = 0;
    virtual void Lower() = 0;

        // client size is the size of area available for subwindows
    void SetClientSize( int width, int height )
        { DoSetClientSize(width, height); }

    void SetClientSize( const wxSize& size )
        { DoSetClientSize(size.x, size.y); }

    void SetClientSize(const wxRect& rect)
        { SetClientSize( rect.width, rect.height ); }

        // get the window position and/or size (pointers may be NULL)
    void GetPosition( int *x, int *y ) const { DoGetPosition(x, y); }
    wxPoint GetPosition() const
    {
        int w, h;
        DoGetPosition(&w, &h);

        return wxPoint(w, h);
    }

    void SetPosition( const wxPoint& pt ) { Move( pt ) ; }

    void GetSize( int *w, int *h ) const { DoGetSize(w, h); }
    wxSize GetSize() const
    {
        int w, h;
        DoGetSize(& w, & h);
        return wxSize(w, h);
    }

    wxRect GetRect() const
    {
        int x, y, w, h;
        GetPosition(& x, & y);
        GetSize(& w, & h);

        return wxRect(x, y, w, h);
    }

    void GetClientSize( int *w, int *h ) const { DoGetClientSize(w, h); }
    wxSize GetClientSize() const
    {
        int w, h;
        DoGetClientSize(& w, & h);

        return wxSize(w, h);
    }

        // get the origin of the client area of the window relative to the
        // window top left corner (the client area may be shifted because of
        // the borders, scrollbars, other decorations...)
    virtual wxPoint GetClientAreaOrigin() const;

        // get the client rectangle in window (i.e. client) coordinates
    wxRect GetClientRect() const
    {
        return wxRect(GetClientAreaOrigin(), GetClientSize());
    }

        // get the size best suited for the window (in fact, minimal
        // acceptable size using which it will still look "nice" in
        // most situations)
    wxSize GetBestSize() const
    {
        if (m_bestSizeCache.IsFullySpecified())
            return m_bestSizeCache;
        return DoGetBestSize();
    }
    void GetBestSize(int *w, int *h) const
    {
        wxSize s = GetBestSize();
        if ( w )
            *w = s.x;
        if ( h )
            *h = s.y;
    }

        // reset the cached best size value so it will be recalculated the
        // next time it is needed.
    void InvalidateBestSize();
    void CacheBestSize(const wxSize& size) const
        { wxConstCast(this, wxWindowBase)->m_bestSizeCache = size; }

        // There are times (and windows) where 'Best' size and 'Min' size
        // are vastly out of sync.  This should be remedied somehow, but in
        // the meantime, this method will return the larger of BestSize
        // (the window's smallest legible size), and any user specified
        // MinSize hint.
    wxSize GetAdjustedBestSize() const
    {
        wxSize  s( GetBestSize() );
        return wxSize( wxMax( s.x, GetMinWidth() ), wxMax( s.y, GetMinHeight() ) );
    }

        // This function will merge the window's best size into the window's
        // minimum size, giving priority to the min size components, and
        // returns the results.
    wxSize GetBestFittingSize() const;

        // A 'Smart' SetSize that will fill in default size values with 'best'
        // size.  Sets the minsize to what was passed in.
    void SetBestFittingSize(const wxSize& size=wxDefaultSize);

        // the generic centre function - centers the window on parent by`
        // default or on screen if it doesn't have parent or
        // wxCENTER_ON_SCREEN flag is given
    void Centre( int direction = wxBOTH );
    void Center( int direction = wxBOTH ) { Centre(direction); }

        // centre on screen (only works for top level windows)
    void CentreOnScreen(int dir = wxBOTH) { Centre(dir | wxCENTER_ON_SCREEN); }
    void CenterOnScreen(int dir = wxBOTH) { CentreOnScreen(dir); }

        // centre with respect to the the parent window
    void CentreOnParent(int dir = wxBOTH) { Centre(dir | wxCENTER_FRAME); }
    void CenterOnParent(int dir = wxBOTH) { CentreOnParent(dir); }

        // set window size to wrap around its children
    virtual void Fit();

        // set virtual size to satisfy children
    virtual void FitInside();

        // set min/max size of the window
    virtual void SetSizeHints( int minW, int minH,
                               int maxW = wxDefaultCoord, int maxH = wxDefaultCoord,
                               int incW = wxDefaultCoord, int incH = wxDefaultCoord )
    {
        DoSetSizeHints(minW, minH, maxW, maxH, incW, incH);
    }

    void SetSizeHints( const wxSize& minSize,
                       const wxSize& maxSize=wxDefaultSize,
                       const wxSize& incSize=wxDefaultSize)
    {
        DoSetSizeHints(minSize.x, minSize.y,
                       maxSize.x, maxSize.y,
                       incSize.x, incSize.y);
    }

    virtual void DoSetSizeHints(int minW, int minH,
                                int maxW = wxDefaultCoord, int maxH = wxDefaultCoord,
                               int incW = wxDefaultCoord, int incH = wxDefaultCoord );

    virtual void SetVirtualSizeHints( int minW, int minH,