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wxWidgets/include/wx/window.h
Vadim Zeitlin 017bbdf516 Define ToDIP() in wxHAVE_DPI_INDEPENDENT_PIXELS case too 
Previously any code using this function wouldn't link under GTK+ 3 or OS X
where wxHAVE_DPI_INDEPENDENT_PIXELS are defined.

Closes #17310.
2015-12-31 00:26:04 +01:00

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///////////////////////////////////////////////////////////////////////////////
// Name: wx/window.h
// Purpose: wxWindowBase class - the interface of wxWindow
// Author: Vadim Zeitlin
// Modified by: Ron Lee
// Created: 01/02/97
// Copyright: (c) Vadim Zeitlin
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_WINDOW_H_BASE_
#define _WX_WINDOW_H_BASE_
// ----------------------------------------------------------------------------
// 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/intl.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__
// Define this macro if the corresponding operating system handles the state
// of children windows automatically when the parent is enabled/disabled.
// Otherwise wx itself must ensure that when the parent is disabled its
// children are disabled too, and their initial state is restored when the
// parent is enabled back.
#if defined(__WXMSW__)
// must do everything ourselves
#undef wxHAS_NATIVE_ENABLED_MANAGEMENT
#elif defined(__WXOSX__)
#if wxOSX_USE_CARBON
#define wxHAS_NATIVE_ENABLED_MANAGEMENT
#else
// must do everything ourselves
#undef wxHAS_NATIVE_ENABLED_MANAGEMENT
#endif
#else
#define wxHAS_NATIVE_ENABLED_MANAGEMENT
#endif
// ----------------------------------------------------------------------------
// forward declarations
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_FWD_CORE wxCaret;
class WXDLLIMPEXP_FWD_CORE wxControl;
class WXDLLIMPEXP_FWD_CORE wxDC;
class WXDLLIMPEXP_FWD_CORE wxDropTarget;
class WXDLLIMPEXP_FWD_CORE wxLayoutConstraints;
class WXDLLIMPEXP_FWD_CORE wxSizer;
class WXDLLIMPEXP_FWD_CORE wxToolTip;
class WXDLLIMPEXP_FWD_CORE wxWindowBase;
class WXDLLIMPEXP_FWD_CORE wxWindow;
class WXDLLIMPEXP_FWD_CORE wxScrollHelper;
#if wxUSE_ACCESSIBILITY
class WXDLLIMPEXP_FWD_CORE wxAccessible;
#endif
// ----------------------------------------------------------------------------
// helper stuff used by wxWindow
// ----------------------------------------------------------------------------
// struct containing all the visual attributes of a control
struct WXDLLIMPEXP_CORE 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
// valid values for Show/HideWithEffect()
enum wxShowEffect
{
wxSHOW_EFFECT_NONE,
wxSHOW_EFFECT_ROLL_TO_LEFT,
wxSHOW_EFFECT_ROLL_TO_RIGHT,
wxSHOW_EFFECT_ROLL_TO_TOP,
wxSHOW_EFFECT_ROLL_TO_BOTTOM,
wxSHOW_EFFECT_SLIDE_TO_LEFT,
wxSHOW_EFFECT_SLIDE_TO_RIGHT,
wxSHOW_EFFECT_SLIDE_TO_TOP,
wxSHOW_EFFECT_SLIDE_TO_BOTTOM,
wxSHOW_EFFECT_BLEND,
wxSHOW_EFFECT_EXPAND,
wxSHOW_EFFECT_MAX
};
// flags for SendSizeEvent()
enum
{
wxSEND_EVENT_POST = 1
};
// ----------------------------------------------------------------------------
// (pseudo)template list classes
// ----------------------------------------------------------------------------
WX_DECLARE_LIST_3(wxWindow, wxWindowBase, wxWindowList, wxWindowListNode, class WXDLLIMPEXP_CORE);
// ----------------------------------------------------------------------------
// global variables
// ----------------------------------------------------------------------------
extern WXDLLIMPEXP_DATA_CORE(wxWindowList) wxTopLevelWindows;
// declared here for compatibility only, main declaration is in wx/app.h
extern WXDLLIMPEXP_DATA_BASE(wxList) wxPendingDelete;
// ----------------------------------------------------------------------------
// 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 WXDLLIMPEXP_CORE wxWindowBase : public wxEvtHandler
{
public:
// creating the window
// -------------------
// default ctor, initializes everything which can be initialized before
// Create()
wxWindowBase() ;
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;
// window attributes
// -----------------
// label is just the same as the title (but for, e.g., buttons it
// makes more sense to speak about labels), title access
// is available from wxTLW classes only (frames, dialogs)
virtual void SetLabel(const wxString& label) = 0;
virtual wxString GetLabel() const = 0;
// 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; }
// get or change the layout direction (LTR or RTL) for this window,
// wxLayout_Default is returned if layout direction is not supported
virtual wxLayoutDirection GetLayoutDirection() const
{ return wxLayout_Default; }
virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir))
{ }
// mirror coordinates for RTL layout if this window uses it and if the
// mirroring is not done automatically like Win32
virtual wxCoord AdjustForLayoutDirection(wxCoord x,
wxCoord width,
wxCoord widthTotal) const;
// window id uniquely identifies the window among its siblings unless
// it is wxID_ANY which means "don't care"
virtual void SetId( wxWindowID winid ) { m_windowId = winid; }
wxWindowID GetId() const { return m_windowId; }
// generate a unique id (or count of them consecutively), returns a
// valid id in the auto-id range or wxID_NONE if failed. If using
// autoid management, it will mark the id as reserved until it is
// used (by assigning it to a wxWindowIDRef) or unreserved.
static wxWindowID NewControlId(int count = 1)
{
return wxIdManager::ReserveId(count);
}
// If an ID generated from NewControlId is not assigned to a wxWindowIDRef,
// it must be unreserved
static void UnreserveControlId(wxWindowID id, int count = 1)
{
wxIdManager::UnreserveId(id, count);
}
// 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); }
void SetPosition(const wxPoint& pt) { Move(pt); }
// 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 (pointers may be NULL): notice that it is in
// client coordinates for child windows and screen coordinates for the
// top level ones, use GetScreenPosition() if you need screen
// coordinates for all kinds of windows
void GetPosition( int *x, int *y ) const { DoGetPosition(x, y); }
wxPoint GetPosition() const
{
int x, y;
DoGetPosition(&x, &y);
return wxPoint(x, y);
}
// get the window position in screen coordinates
void GetScreenPosition(int *x, int *y) const { DoGetScreenPosition(x, y); }
wxPoint GetScreenPosition() const
{
int x, y;
DoGetScreenPosition(&x, &y);
return wxPoint(x, y);
}
// get the window size (pointers may be NULL)
void GetSize( int *w, int *h ) const { DoGetSize(w, h); }
wxSize GetSize() const
{
int w, h;
DoGetSize(& w, & h);
return wxSize(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 position and size at once
wxRect GetRect() const
{
int x, y, w, h;
GetPosition(&x, &y);
GetSize(&w, &h);
return wxRect(x, y, w, h);
}
wxRect GetScreenRect() const
{
int x, y, w, h;
GetScreenPosition(&x, &y);
GetSize(&w, &h);
return wxRect(x, y, 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());
}
// client<->window size conversion
virtual wxSize ClientToWindowSize(const wxSize& size) const;
virtual wxSize WindowToClientSize(const wxSize& size) const;
// 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;
void GetBestSize(int *w, int *h) const
{
wxSize s = GetBestSize();
if ( w )
*w = s.x;
if ( h )
*h = s.y;
}
// Determine the best size in the other direction if one of them is
// fixed. This is used with windows that can wrap their contents and
// returns input-independent best size for the others.
int GetBestHeight(int width) const;
int GetBestWidth(int height) const;
void SetScrollHelper( wxScrollHelper *sh ) { m_scrollHelper = sh; }
wxScrollHelper *GetScrollHelper() { return m_scrollHelper; }
// 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; }
// 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.
virtual wxSize GetEffectiveMinSize() const;
wxDEPRECATED_MSG("use GetEffectiveMinSize() instead")
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 SetInitialSize(const wxSize& size=wxDefaultSize);
wxDEPRECATED_MSG("use SetInitialSize() instead")
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 dir = wxBOTH) { DoCentre(dir); }
void Center(int dir = wxBOTH) { DoCentre(dir); }
// centre with respect to the parent window
void CentreOnParent(int dir = wxBOTH) { DoCentre(dir); }
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();
// SetSizeHints is actually for setting the size hints
// for the wxTLW for a Window Manager - hence the name -
// and it is therefore overridden in wxTLW to do that.
// In wxWindow(Base), it has (unfortunately) been abused
// to mean the same as SetMinSize() and SetMaxSize().
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); }
#if WXWIN_COMPATIBILITY_2_8
// these are useless and do nothing since wxWidgets 2.9
wxDEPRECATED( virtual void SetVirtualSizeHints( int minW, int minH,
int maxW = wxDefaultCoord, int maxH = wxDefaultCoord ) );
wxDEPRECATED( void SetVirtualSizeHints( const wxSize& minSize,
const wxSize& maxSize=wxDefaultSize) );
#endif // WXWIN_COMPATIBILITY_2_8
// Call these to override what GetBestSize() returns. This
// method is only virtual because it is overridden in wxTLW
// as a different API for SetSizeHints().
virtual void SetMinSize(const wxSize& minSize);
virtual void SetMaxSize(const wxSize& maxSize);
// Like Set*Size, but for client, not window, size
virtual void SetMinClientSize(const wxSize& size)
{ SetMinSize(ClientToWindowSize(size)); }
virtual void SetMaxClientSize(const wxSize& size)
{ SetMaxSize(ClientToWindowSize(size)); }
// Override these methods to impose restrictions on min/max size.
// The easier way is to call SetMinSize() and SetMaxSize() which
// will have the same effect. Doing both is non-sense.
virtual wxSize GetMinSize() const { return wxSize(m_minWidth, m_minHeight); }
virtual wxSize GetMaxSize() const { return wxSize(m_maxWidth, m_maxHeight); }
// Like Get*Size, but for client, not window, size
virtual wxSize GetMinClientSize() const
{ return WindowToClientSize(GetMinSize()); }
virtual wxSize GetMaxClientSize() const
{ return WindowToClientSize(GetMaxSize()); }
// Get the min and max values one by one
int GetMinWidth() const { return GetMinSize().x; }
int GetMinHeight() const { return GetMinSize().y; }
int GetMaxWidth() const { return GetMaxSize().x; }
int GetMaxHeight() const { return GetMaxSize().y; }
// Methods for accessing the virtual size of a window. For most
// windows this is just the client area of the window, but for
// some like scrolled windows it is more or less independent of
// the screen window size. You may override the DoXXXVirtual
// methods below for classes where that is the case.
void SetVirtualSize( const wxSize &size ) { DoSetVirtualSize( size.x, size.y ); }
void SetVirtualSize( int x, int y ) { DoSetVirtualSize( x, y ); }
wxSize GetVirtualSize() const { return DoGetVirtualSize(); }
void GetVirtualSize( int *x, int *y ) const
{
wxSize s( DoGetVirtualSize() );
if( x )
*x = s.GetWidth();
if( y )
*y = s.GetHeight();
}
// Override these methods for windows that have a virtual size
// independent of their client size. eg. the virtual area of a
// wxScrolledWindow.
virtual void DoSetVirtualSize( int x, int y );
virtual wxSize DoGetVirtualSize() const;
// Return the largest of ClientSize and BestSize (as determined
// by a sizer, interior children, or other means)
virtual wxSize GetBestVirtualSize() const
{
wxSize client( GetClientSize() );
wxSize best( GetBestSize() );
return wxSize( wxMax( client.x, best.x ), wxMax( client.y, best.y ) );
}
// returns the magnification of the content of this window
// eg 2.0 for a window on a retina screen
virtual double GetContentScaleFactor() const;
// return the size of the left/right and top/bottom borders in x and y
// components of the result respectively
virtual wxSize GetWindowBorderSize() const;
// wxSizer and friends use this to give a chance to a component to recalc
// its min size once one of the final size components is known. Override
// this function when that is useful (such as for wxStaticText which can
// stretch over several lines). Parameter availableOtherDir
// tells the item how much more space there is available in the opposite
// direction (-1 if unknown).
virtual bool
InformFirstDirection(int direction, int size, int availableOtherDir);
// sends a size event to the window using its current size -- this has an
// effect of refreshing the window layout
//
// by default the event is sent, i.e. processed immediately, but if flags
// value includes wxSEND_EVENT_POST then it's posted, i.e. only schedule
// for later processing
virtual void SendSizeEvent(int flags = 0);
// this is a safe wrapper for GetParent()->SendSizeEvent(): it checks that
// we have a parent window and it's not in process of being deleted
//
// this is used by controls such as tool/status bars changes to which must
// also result in parent re-layout
void SendSizeEventToParent(int flags = 0);
// this is a more readable synonym for SendSizeEvent(wxSEND_EVENT_POST)
void PostSizeEvent() { SendSizeEvent(wxSEND_EVENT_POST); }
// this is the same as SendSizeEventToParent() but using PostSizeEvent()
void PostSizeEventToParent() { SendSizeEventToParent(wxSEND_EVENT_POST); }
// These functions should be used before repositioning the children of
// this window to reduce flicker or, in MSW case, even avoid display
// corruption in some situations (so they're more than just optimization).
//
// EndRepositioningChildren() should be called if and only if
// BeginRepositioningChildren() returns true. To ensure that this is always
// done automatically, use ChildrenRepositioningGuard class below.
virtual bool BeginRepositioningChildren() { return false; }
virtual void EndRepositioningChildren() { }
// A simple helper which ensures that EndRepositioningChildren() is called
// from its dtor if and only if calling BeginRepositioningChildren() from
// the ctor returned true.
class ChildrenRepositioningGuard
{
public:
// Notice that window can be NULL here, for convenience. In this case
// this class simply doesn't do anything.
wxEXPLICIT ChildrenRepositioningGuard(wxWindowBase* win)
: m_win(win),
m_callEnd(win && win->BeginRepositioningChildren())
{
}
~ChildrenRepositioningGuard()
{
if ( m_callEnd )
m_win->EndRepositioningChildren();
}
private:
wxWindowBase* const m_win;
const bool m_callEnd;
wxDECLARE_NO_COPY_CLASS(ChildrenRepositioningGuard);
};
// window state
// ------------
// returns true if window was shown/hidden, false if the nothing was
// done (window was already shown/hidden)
virtual bool Show( bool show = true );
bool Hide() { return Show(false); }
// show or hide the window with a special effect, not implemented on
// most platforms (where it is the same as Show()/Hide() respectively)
//
// timeout specifies how long the animation should take, in ms, the
// default value of 0 means to use the default (system-dependent) value
virtual bool ShowWithEffect(wxShowEffect WXUNUSED(effect),
unsigned WXUNUSED(timeout) = 0)
{
return Show();
}
virtual bool HideWithEffect(wxShowEffect WXUNUSED(effect),
unsigned WXUNUSED(timeout) = 0)
{
return Hide();
}
// returns true if window was enabled/disabled, false if nothing done
virtual bool Enable( bool enable = true );
bool Disable() { return Enable(false); }
virtual bool IsShown() const { return m_isShown; }
// returns true if the window is really enabled and false otherwise,
// whether because it had been explicitly disabled itself or because
// its parent is currently disabled -- then this method returns false
// whatever is the intrinsic state of this window, use IsThisEnabled(0
// to retrieve it. In other words, this relation always holds:
//
// IsEnabled() == IsThisEnabled() && parent.IsEnabled()
//
bool IsEnabled() const;
// returns the internal window state independently of the parent(s)
// state, i.e. the state in which the window would be if all its
// parents were enabled (use IsEnabled() above to get the effective
// window state)
bool IsThisEnabled() const { return m_isEnabled; }
// returns true if the window is visible, i.e. IsShown() returns true
// if called on it and all its parents up to the first TLW
virtual bool IsShownOnScreen() const;
// get/set window style (setting style won't update the window and so
// is only useful for internal usage)
virtual void SetWindowStyleFlag( long style ) { m_windowStyle = style; }
virtual long GetWindowStyleFlag() const { return m_windowStyle; }
// just some (somewhat shorter) synonyms
void SetWindowStyle( long style ) { SetWindowStyleFlag(style); }
long GetWindowStyle() const { return GetWindowStyleFlag(); }
// check if the flag is set
bool HasFlag(int flag) const { return (m_windowStyle & flag) != 0; }
virtual bool IsRetained() const { return HasFlag(wxRETAINED); }
// turn the flag on if it had been turned off before and vice versa,
// return true if the flag is currently turned on
bool ToggleWindowStyle(int flag);
// extra style: the less often used style bits which can't be set with
// SetWindowStyleFlag()
virtual void SetExtraStyle(long exStyle) { m_exStyle = exStyle; }
long GetExtraStyle() const { return m_exStyle; }
bool HasExtraStyle(int exFlag) const { return (m_exStyle & exFlag) != 0; }
#if WXWIN_COMPATIBILITY_2_8
// make the window modal (all other windows unresponsive)
wxDEPRECATED( virtual void MakeModal(bool modal = true) );
#endif
// (primitive) theming support
// ---------------------------
virtual void SetThemeEnabled(bool enableTheme) { m_themeEnabled = enableTheme; }
virtual bool GetThemeEnabled() const { return m_themeEnabled; }
// focus and keyboard handling
// ---------------------------
// set focus to this window
virtual void SetFocus() = 0;
// set focus to this window as the result of a keyboard action
virtual void SetFocusFromKbd() { SetFocus(); }
// return the window which currently has the focus or NULL
static wxWindow *FindFocus();
static wxWindow *DoFindFocus() /* = 0: implement in derived classes */;
// return true if the window has focus (handles composite windows
// correctly - returns true if GetMainWindowOfCompositeControl()
// has focus)
virtual bool HasFocus() const;
// can this window have focus in principle?
//
// the difference between AcceptsFocus[FromKeyboard]() and CanAcceptFocus
// [FromKeyboard]() is that the former functions are meant to be
// overridden in the derived classes to simply return false if the
// control can't have focus, while the latter are meant to be used by
// this class clients and take into account the current window state
virtual bool AcceptsFocus() const { return true; }
// can this window or one of its children accept focus?
//
// usually it's the same as AcceptsFocus() but is overridden for
// container windows
virtual bool AcceptsFocusRecursively() const { return AcceptsFocus(); }
// can this window be given focus by keyboard navigation? if not, the
// only way to give it focus (provided it accepts it at all) is to
// click it
virtual bool AcceptsFocusFromKeyboard() const { return AcceptsFocus(); }
// Can this window be focused right now, in its current state? This
// shouldn't be called at all if AcceptsFocus() returns false.
//
// It is a convenient helper for the various functions using it below
// but also a hook allowing to override the default logic for some rare
// cases (currently just wxRadioBox in wxMSW) when it's inappropriate.
virtual bool CanBeFocused() const { return IsShown() && IsEnabled(); }
// can this window itself have focus?
bool IsFocusable() const { return AcceptsFocus() && CanBeFocused(); }
// can this window have focus right now?
//
// if this method returns true, it means that calling SetFocus() will
// put focus either to this window or one of its children, if you need
// to know whether this window accepts focus itself, use IsFocusable()
bool CanAcceptFocus() const
{ return AcceptsFocusRecursively() && CanBeFocused(); }
// can this window be assigned focus from keyboard right now?
bool CanAcceptFocusFromKeyboard() const
{ return AcceptsFocusFromKeyboard() && CanBeFocused(); }
// call this when the return value of AcceptsFocus() changes
virtual void SetCanFocus(bool WXUNUSED(canFocus)) { }
// navigates inside this window
bool NavigateIn(int flags = wxNavigationKeyEvent::IsForward)
{ return DoNavigateIn(flags); }
// navigates in the specified direction from this window, this is
// equivalent to GetParent()->NavigateIn()
bool Navigate(int flags = wxNavigationKeyEvent::IsForward)
{ return m_parent && ((wxWindowBase *)m_parent)->DoNavigateIn(flags); }
// this function will generate the appropriate call to Navigate() if the
// key event is one normally used for keyboard navigation and return true
// in this case
bool HandleAsNavigationKey(const wxKeyEvent& event);
// move this window just before/after the specified one in tab order
// (the other window must be our sibling!)
void MoveBeforeInTabOrder(wxWindow *win)
{ DoMoveInTabOrder(win, OrderBefore); }
void MoveAfterInTabOrder(wxWindow *win)
{ DoMoveInTabOrder(win, OrderAfter); }
// parent/children relations
// -------------------------
// get the list of children
const wxWindowList& GetChildren() const { return m_children; }
wxWindowList& GetChildren() { return m_children; }
// needed just for extended runtime
const wxWindowList& GetWindowChildren() const { return GetChildren() ; }
// get the window before/after this one in the parents children list,
// returns NULL if this is the first/last window
wxWindow *GetPrevSibling() const { return DoGetSibling(OrderBefore); }
wxWindow *GetNextSibling() const { return DoGetSibling(OrderAfter); }
// get the parent or the parent of the parent
wxWindow *GetParent() const { return m_parent; }
inline wxWindow *GetGrandParent() const;
// is this window a top level one?
virtual bool IsTopLevel() const;
// is this window a child or grand child of this one (inside the same
// TLW)?
bool IsDescendant(wxWindowBase* win) const;
// it doesn't really change parent, use Reparent() instead
void SetParent( wxWindowBase *parent );
// change the real parent of this window, return true if the parent
// was changed, false otherwise (error or newParent == oldParent)
virtual bool Reparent( wxWindowBase *newParent );
// implementation mostly
virtual void AddChild( wxWindowBase *child );
virtual void RemoveChild( wxWindowBase *child );
// returns true if the child is in the client area of the window, i.e. is
// not scrollbar, toolbar etc.
virtual bool IsClientAreaChild(const wxWindow *WXUNUSED(child)) const
{ return true; }
// looking for windows
// -------------------
// find window among the descendants of this one either by id or by
// name (return NULL if not found)
wxWindow *FindWindow(long winid) const;
wxWindow *FindWindow(const wxString& name) const;
// Find a window among any window (all return NULL if not found)
static wxWindow *FindWindowById( long winid, const wxWindow *parent = NULL );
static wxWindow *FindWindowByName( const wxString& name,
const wxWindow *parent = NULL );
static wxWindow *FindWindowByLabel( const wxString& label,
const wxWindow *parent = NULL );
// event handler stuff
// -------------------
// get the current event handler
wxEvtHandler *GetEventHandler() const { return m_eventHandler; }
// replace the event handler (allows to completely subclass the
// window)
void SetEventHandler( wxEvtHandler *handler );
// push/pop event handler: allows to chain a custom event handler to
// alreasy existing ones
void PushEventHandler( wxEvtHandler *handler );
wxEvtHandler *PopEventHandler( bool deleteHandler = false );
// find the given handler in the event handler chain and remove (but
// not delete) it from the event handler chain, return true if it was
// found and false otherwise (this also results in an assert failure so
// this function should only be called when the handler is supposed to
// be there)
bool RemoveEventHandler(wxEvtHandler *handler);
// Process an event by calling GetEventHandler()->ProcessEvent(): this
// is a straightforward replacement for ProcessEvent() itself which
// shouldn't be used directly with windows as it doesn't take into
// account any event handlers associated with the window
bool ProcessWindowEvent(wxEvent& event)
{ return GetEventHandler()->ProcessEvent(event); }
// Call GetEventHandler()->ProcessEventLocally(): this should be used
// instead of calling ProcessEventLocally() directly on the window
// itself as this wouldn't take any pushed event handlers into account
// correctly
bool ProcessWindowEventLocally(wxEvent& event)
{ return GetEventHandler()->ProcessEventLocally(event); }
// Process an event by calling GetEventHandler()->ProcessEvent() and
// handling any exceptions thrown by event handlers. It's mostly useful
// when processing wx events when called from C code (e.g. in GTK+
// callback) when the exception wouldn't correctly propagate to
// wxEventLoop.
bool HandleWindowEvent(wxEvent& event) const;
// disable wxEvtHandler double-linked list mechanism:
virtual void SetNextHandler(wxEvtHandler *handler) wxOVERRIDE;
virtual void SetPreviousHandler(wxEvtHandler *handler) wxOVERRIDE;
protected:
// NOTE: we change the access specifier of the following wxEvtHandler functions
// so that the user won't be able to call them directly.
// Calling wxWindow::ProcessEvent in fact only works when there are NO
// event handlers pushed on the window.
// To ensure correct operation, instead of wxWindow::ProcessEvent
// you must always call wxWindow::GetEventHandler()->ProcessEvent()
// or HandleWindowEvent().
// The same holds for all other wxEvtHandler functions.
using wxEvtHandler::ProcessEvent;
using wxEvtHandler::ProcessEventLocally;
#if wxUSE_THREADS
using wxEvtHandler::ProcessThreadEvent;
#endif
using wxEvtHandler::SafelyProcessEvent;
using wxEvtHandler::ProcessPendingEvents;
using wxEvtHandler::AddPendingEvent;
using wxEvtHandler::QueueEvent;
public:
// validators
// ----------
#if wxUSE_VALIDATORS
// a window may have an associated validator which is used to control
// user input
virtual void SetValidator( const wxValidator &validator );
virtual wxValidator *GetValidator() { return m_windowValidator; }
#endif // wxUSE_VALIDATORS
// dialog oriented functions
// -------------------------
// validate the correctness of input, return true if ok
virtual bool Validate();
// transfer data between internal and GUI representations
virtual bool TransferDataToWindow();
virtual bool TransferDataFromWindow();
virtual void InitDialog();
#if wxUSE_ACCEL
// accelerators
// ------------
virtual void SetAcceleratorTable( const wxAcceleratorTable& accel )
{ m_acceleratorTable = accel; }
wxAcceleratorTable *GetAcceleratorTable()
{ return &m_acceleratorTable; }
#endif // wxUSE_ACCEL
#if wxUSE_HOTKEY
// hot keys (system wide accelerators)
// -----------------------------------
virtual bool RegisterHotKey(int hotkeyId, int modifiers, int keycode);
virtual bool UnregisterHotKey(int hotkeyId);
#endif // wxUSE_HOTKEY
// translation between different units
// -----------------------------------
// DPI-independent pixels, or DIPs, are pixel values for the standard
// 96 DPI display, they are scaled to take the current resolution into
// account (i.e. multiplied by the same factor as returned by
// GetContentScaleFactor()) if necessary for the current platform.
//
// Currently the conversion factor is the same for all windows but this
// will change with the monitor-specific resolution support in the
// future, so prefer using the non-static member functions.
//
// Similarly, currently in practice the factor is the same in both
// horizontal and vertical directions, but this could, in principle,
// change too, so prefer using the overloads taking wxPoint or wxSize.
static wxSize FromDIP(const wxSize& sz, const wxWindowBase* w);
static wxPoint FromDIP(const wxPoint& pt, const wxWindowBase* w)
{
const wxSize sz = FromDIP(wxSize(pt.x, pt.y), w);
return wxPoint(sz.x, sz.y);
}
static int FromDIP(int d, const wxWindowBase* w)
{
return FromDIP(wxSize(d, 0), w).x;
}
wxSize FromDIP(const wxSize& sz) const { return FromDIP(sz, this); }
wxPoint FromDIP(const wxPoint& pt) const { return FromDIP(pt, this); }
int FromDIP(int d) const { return FromDIP(d, this); }
static wxSize ToDIP(const wxSize& sz, const wxWindowBase* w);
static wxPoint ToDIP(const wxPoint& pt, const wxWindowBase* w)
{
const wxSize sz = ToDIP(wxSize(pt.x, pt.y), w);
return wxPoint(sz.x, sz.y);
}
static int ToDIP(int d, const wxWindowBase* w)
{
return ToDIP(wxSize(d, 0), w).x;
}
wxSize ToDIP(const wxSize& sz) const { return ToDIP(sz, this); }
wxPoint ToDIP(const wxPoint& pt) const { return ToDIP(pt, this); }
int ToDIP(int d) const { return ToDIP(d, this); }
// Dialog units are based on the size of the current font.
wxPoint ConvertPixelsToDialog( const wxPoint& pt ) const;
wxPoint ConvertDialogToPixels( const wxPoint& pt ) const;
wxSize ConvertPixelsToDialog( const wxSize& sz ) const
{
wxPoint pt(ConvertPixelsToDialog(wxPoint(sz.x, sz.y)));
return wxSize(pt.x, pt.y);
}
wxSize ConvertDialogToPixels( const wxSize& sz ) const
{
wxPoint pt(ConvertDialogToPixels(wxPoint(sz.x, sz.y)));
return wxSize(pt.x, pt.y);
}
// mouse functions
// ---------------
// move the mouse to the specified position
virtual void WarpPointer(int x, int y) = 0;
// start or end mouse capture, these functions maintain the stack of
// windows having captured the mouse and after calling ReleaseMouse()
// the mouse is not released but returns to the window which had had
// captured it previously (if any)
void CaptureMouse();
void ReleaseMouse();
// get the window which currently captures the mouse or NULL
static wxWindow *GetCapture();
// does this window have the capture?
virtual bool HasCapture() const
{ return (wxWindow *)this == GetCapture(); }
// painting the window
// -------------------
// mark the specified rectangle (or the whole window) as "dirty" so it
// will be repainted
virtual void Refresh( bool eraseBackground = true,
const wxRect *rect = (const wxRect *) NULL ) = 0;
// a less awkward wrapper for Refresh
void RefreshRect(const wxRect& rect, bool eraseBackground = true)
{
Refresh(eraseBackground, &rect);
}
// repaint all invalid areas of the window immediately
virtual void Update() { }
// clear the window background
virtual void ClearBackground();
// freeze the window: don't redraw it until it is thawed
void Freeze();
// thaw the window: redraw it after it had been frozen
void Thaw();
// return true if window had been frozen and not unthawed yet
bool IsFrozen() const { return m_freezeCount != 0; }
// adjust DC for drawing on this window
virtual void PrepareDC( wxDC & WXUNUSED(dc) ) { }
// return true if the window contents is double buffered by the system
virtual bool IsDoubleBuffered() const { return false; }
// the update region of the window contains the areas which must be
// repainted by the program
const wxRegion& GetUpdateRegion() const { return m_updateRegion; }
wxRegion& GetUpdateRegion() { return m_updateRegion; }
// get the update rectangleregion bounding box in client coords
wxRect GetUpdateClientRect() const;
// these functions verify whether the given point/rectangle belongs to
// (or at least intersects with) the update region
virtual bool DoIsExposed( int x, int y ) const;
virtual bool DoIsExposed( int x, int y, int w, int h ) const;
bool IsExposed( int x, int y ) const
{ return DoIsExposed(x, y); }
bool IsExposed( int x, int y, int w, int h ) const
{ return DoIsExposed(x, y, w, h); }
bool IsExposed( const wxPoint& pt ) const
{ return DoIsExposed(pt.x, pt.y); }
bool IsExposed( const wxRect& rect ) const
{ return DoIsExposed(rect.x, rect.y, rect.width, rect.height); }
// colours, fonts and cursors
// --------------------------
// get the default attributes for the controls of this class: we
// provide a virtual function which can be used to query the default
// attributes of an existing control and a static function which can
// be used even when no existing object of the given class is
// available, but which won't return any styles specific to this
// particular control, of course (e.g. "Ok" button might have
// different -- bold for example -- font)
virtual wxVisualAttributes GetDefaultAttributes() const
{
return GetClassDefaultAttributes(GetWindowVariant());
}
static wxVisualAttributes
GetClassDefaultAttributes(wxWindowVariant variant = wxWINDOW_VARIANT_NORMAL);
// set/retrieve the window colours (system defaults are used by
// default): SetXXX() functions return true if colour was changed,
// SetDefaultXXX() reset the "m_inheritXXX" flag after setting the
// value to prevent it from being inherited by our children
virtual bool SetBackgroundColour(const wxColour& colour);
void SetOwnBackgroundColour(const wxColour& colour)
{
if ( SetBackgroundColour(colour) )
m_inheritBgCol = false;
}
wxColour GetBackgroundColour() const;
bool InheritsBackgroundColour() const
{
return m_inheritBgCol;
}
bool UseBgCol() const
{
return m_hasBgCol;
}
virtual bool SetForegroundColour(const wxColour& colour);
void SetOwnForegroundColour(const wxColour& colour)
{
if ( SetForegroundColour(colour) )
m_inheritFgCol = false;
}
wxColour GetForegroundColour() const;
// Set/get the background style.
virtual bool SetBackgroundStyle(wxBackgroundStyle style);
wxBackgroundStyle GetBackgroundStyle() const
{ return m_backgroundStyle; }
// returns true if the control has "transparent" areas such as a
// wxStaticText and wxCheckBox and the background should be adapted
// from a parent window
virtual bool HasTransparentBackground() { return false; }
// Returns true if background transparency is supported for this
// window, i.e. if calling SetBackgroundStyle(wxBG_STYLE_TRANSPARENT)
// has a chance of succeeding. If reason argument is non-NULL, returns a
// user-readable explanation of why it isn't supported if the return
// value is false.
virtual bool IsTransparentBackgroundSupported(wxString* reason = NULL) const;
// set/retrieve the font for the window (SetFont() returns true if the
// font really changed)
virtual bool SetFont(const wxFont& font) = 0;
void SetOwnFont(const wxFont& font)
{
if ( SetFont(font) )
m_inheritFont = false;
}
wxFont GetFont() const;
// set/retrieve the cursor for this window (SetCursor() returns true
// if the cursor was really changed)
virtual bool SetCursor( const wxCursor &cursor );
const wxCursor& GetCursor() const { return m_cursor; }
#if wxUSE_CARET
// associate a caret with the window
void SetCaret(wxCaret *caret);
// get the current caret (may be NULL)
wxCaret *GetCaret() const { return m_caret; }
#endif // wxUSE_CARET
// get the (average) character size for the current font
virtual int GetCharHeight() const = 0;
virtual int GetCharWidth() const = 0;
// get the width/height/... of the text using current or specified
// font
void GetTextExtent(const wxString& string,
int *x, int *y,
int *descent = NULL,
int *externalLeading = NULL,
const wxFont *font = NULL) const
{
DoGetTextExtent(string, x, y, descent, externalLeading, font);
}
wxSize GetTextExtent(const wxString& string) const
{
wxCoord w, h;
GetTextExtent(string, &w, &h);
return wxSize(w, h);
}
// client <-> screen coords
// ------------------------
// translate to/from screen/client coordinates (pointers may be NULL)
void ClientToScreen( int *x, int *y ) const
{ DoClientToScreen(x, y); }
void ScreenToClient( int *x, int *y ) const
{ DoScreenToClient(x, y); }
// wxPoint interface to do the same thing
wxPoint ClientToScreen(const wxPoint& pt) const
{
int x = pt.x, y = pt.y;
DoClientToScreen(&x, &y);
return wxPoint(x, y);
}
wxPoint ScreenToClient(const wxPoint& pt) const
{
int x = pt.x, y = pt.y;
DoScreenToClient(&x, &y);
return wxPoint(x, y);
}
// test where the given (in client coords) point lies
wxHitTest HitTest(wxCoord x, wxCoord y) const
{ return DoHitTest(x, y); }
wxHitTest HitTest(const wxPoint& pt) const
{ return DoHitTest(pt.x, pt.y); }
// misc
// ----
// get the window border style from the given flags: this is different from
// simply doing flags & wxBORDER_MASK because it uses GetDefaultBorder() to
// translate wxBORDER_DEFAULT to something reasonable
wxBorder GetBorder(long flags) const;
// get border for the flags of this window
wxBorder GetBorder() const { return GetBorder(GetWindowStyleFlag()); }
// send wxUpdateUIEvents to this window, and children if recurse is true
virtual void UpdateWindowUI(long flags = wxUPDATE_UI_NONE);
// do the window-specific processing after processing the update event
virtual void DoUpdateWindowUI(wxUpdateUIEvent& event) ;
#if wxUSE_MENUS
// show popup menu at the given position, generate events for the items
// selected in it
bool PopupMenu(wxMenu *menu, const wxPoint& pos = wxDefaultPosition)
{ return PopupMenu(menu, pos.x, pos.y); }
bool PopupMenu(wxMenu *menu, int x, int y);
// simply return the id of the selected item or wxID_NONE without
// generating any events
int GetPopupMenuSelectionFromUser(wxMenu& menu,
const wxPoint& pos = wxDefaultPosition)
{ return DoGetPopupMenuSelectionFromUser(menu, pos.x, pos.y); }
int GetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y)
{ return DoGetPopupMenuSelectionFromUser(menu, x, y); }
#endif // wxUSE_MENUS
// override this method to return true for controls having multiple pages
virtual bool HasMultiplePages() const { return false; }
// scrollbars
// ----------
// can the window have the scrollbar in this orientation?
virtual bool CanScroll(int orient) const;
// does the window have the scrollbar in this orientation?
bool HasScrollbar(int orient) const;
// configure the window scrollbars
virtual void SetScrollbar( int orient,
int pos,
int thumbvisible,
int range,
bool refresh = true ) = 0;
virtual void SetScrollPos( int orient, int pos, bool refresh = true ) = 0;
virtual int GetScrollPos( int orient ) const = 0;
virtual int GetScrollThumb( int orient ) const = 0;
virtual int GetScrollRange( int orient ) const = 0;
// scroll window to the specified position
virtual void ScrollWindow( int dx, int dy,
const wxRect* rect = NULL ) = 0;
// scrolls window by line/page: note that not all controls support this
//
// return true if the position changed, false otherwise
virtual bool ScrollLines(int WXUNUSED(lines)) { return false; }
virtual bool ScrollPages(int WXUNUSED(pages)) { return false; }
// convenient wrappers for ScrollLines/Pages
bool LineUp() { return ScrollLines(-1); }
bool LineDown() { return ScrollLines(1); }
bool PageUp() { return ScrollPages(-1); }
bool PageDown() { return ScrollPages(1); }
// call this to always show one or both scrollbars, even if the window
// is big enough to not require them
virtual void AlwaysShowScrollbars(bool WXUNUSED(horz) = true,
bool WXUNUSED(vert) = true)
{
}
// return true if AlwaysShowScrollbars() had been called before for the
// corresponding orientation
virtual bool IsScrollbarAlwaysShown(int WXUNUSED(orient)) const
{
return false;
}
// context-sensitive help
// ----------------------
// these are the convenience functions wrapping wxHelpProvider methods
#if wxUSE_HELP
// associate this help text with this window
void SetHelpText(const wxString& text);
#if WXWIN_COMPATIBILITY_2_8
// Associate this help text with all windows with the same id as this one.
// Don't use this, do wxHelpProvider::Get()->AddHelp(id, text);
wxDEPRECATED( void SetHelpTextForId(const wxString& text) );
#endif // WXWIN_COMPATIBILITY_2_8
// get the help string associated with the given position in this window
//
// notice that pt may be invalid if event origin is keyboard or unknown
// and this method should return the global window help text then
virtual wxString GetHelpTextAtPoint(const wxPoint& pt,
wxHelpEvent::Origin origin) const;
// returns the position-independent help text
wxString GetHelpText() const
{
return GetHelpTextAtPoint(wxDefaultPosition, wxHelpEvent::Origin_Unknown);
}
#else // !wxUSE_HELP
// silently ignore SetHelpText() calls
void SetHelpText(const wxString& WXUNUSED(text)) { }
void SetHelpTextForId(const wxString& WXUNUSED(text)) { }
#endif // wxUSE_HELP
// tooltips
// --------
#if wxUSE_TOOLTIPS
// the easiest way to set a tooltip for a window is to use this method
void SetToolTip( const wxString &tip ) { DoSetToolTipText(tip); }
// attach a tooltip to the window, pointer can be NULL to remove
// existing tooltip
void SetToolTip( wxToolTip *tip ) { DoSetToolTip(tip); }
// more readable synonym for SetToolTip(NULL)
void UnsetToolTip() { SetToolTip(NULL); }
// get the associated tooltip or NULL if none
wxToolTip* GetToolTip() const { return m_tooltip; }
wxString GetToolTipText() const;
// Use the same tool tip as the given one (which can be NULL to indicate
// that no tooltip should be used) for this window. This is currently only
// used by wxCompositeWindow::DoSetToolTip() implementation and is not part
// of the public wx API.
//
// Returns true if tip was valid and we copied it or false if it was NULL
// and we reset our own tooltip too.
bool CopyToolTip(wxToolTip *tip);
#else // !wxUSE_TOOLTIPS
// make it much easier to compile apps in an environment
// that doesn't support tooltips
void SetToolTip(const wxString & WXUNUSED(tip)) { }
void UnsetToolTip() { }
#endif // wxUSE_TOOLTIPS/!wxUSE_TOOLTIPS
// drag and drop
// -------------
#if wxUSE_DRAG_AND_DROP
// set/retrieve the drop target associated with this window (may be
// NULL; it's owned by the window and will be deleted by it)
virtual void SetDropTarget( wxDropTarget *dropTarget ) = 0;
virtual wxDropTarget *GetDropTarget() const { return m_dropTarget; }
// Accept files for dragging
virtual void DragAcceptFiles(bool accept)
#ifdef __WXMSW__
// it does have common implementation but not for MSW which has its own
// native version of it
= 0
#endif // __WXMSW__
;
#endif // wxUSE_DRAG_AND_DROP
// constraints and sizers
// ----------------------
#if wxUSE_CONSTRAINTS
// set the constraints for this window or retrieve them (may be NULL)
void SetConstraints( wxLayoutConstraints *constraints );
wxLayoutConstraints *GetConstraints() const { return m_constraints; }
// implementation only
void UnsetConstraints(wxLayoutConstraints *c);
wxWindowList *GetConstraintsInvolvedIn() const
{ return m_constraintsInvolvedIn; }
void AddConstraintReference(wxWindowBase *otherWin);
void RemoveConstraintReference(wxWindowBase *otherWin);
void DeleteRelatedConstraints();
void ResetConstraints();
// these methods may be overridden for special layout algorithms
virtual void SetConstraintSizes(bool recurse = true);
virtual bool LayoutPhase1(int *noChanges);
virtual bool LayoutPhase2(int *noChanges);
virtual bool DoPhase(int phase);
// these methods are virtual but normally won't be overridden
virtual void SetSizeConstraint(int x, int y, int w, int h);
virtual void MoveConstraint(int x, int y);
virtual void GetSizeConstraint(int *w, int *h) const ;
virtual void GetClientSizeConstraint(int *w, int *h) const ;
virtual void GetPositionConstraint(int *x, int *y) const ;
#endif // wxUSE_CONSTRAINTS
// when using constraints or sizers, it makes sense to update
// children positions automatically whenever the window is resized
// - this is done if autoLayout is on
void SetAutoLayout( bool autoLayout ) { m_autoLayout = autoLayout; }
bool GetAutoLayout() const { return m_autoLayout; }
// lay out the window and its children
virtual bool Layout();
// sizers
void SetSizer(wxSizer *sizer, bool deleteOld = true );
void SetSizerAndFit( wxSizer *sizer, bool deleteOld = true );
wxSizer *GetSizer() const { return m_windowSizer; }
// Track if this window is a member of a sizer
void SetContainingSizer(wxSizer* sizer);
wxSizer *GetContainingSizer() const { return m_containingSizer; }
// accessibility
// ----------------------
#if wxUSE_ACCESSIBILITY
// Override to create a specific accessible object.
virtual wxAccessible* CreateAccessible();
// Sets the accessible object.
void SetAccessible(wxAccessible* accessible) ;
// Returns the accessible object.
wxAccessible* GetAccessible() { return m_accessible; }
// Returns the accessible object, creating if necessary.
wxAccessible* GetOrCreateAccessible() ;
#endif
// Set window transparency if the platform supports it
virtual bool SetTransparent(wxByte WXUNUSED(alpha)) { return false; }
virtual bool CanSetTransparent() { return false; }
// implementation
// --------------
// event handlers
void OnSysColourChanged( wxSysColourChangedEvent& event );
void OnInitDialog( wxInitDialogEvent &event );
void OnMiddleClick( wxMouseEvent& event );
#if wxUSE_HELP
void OnHelp(wxHelpEvent& event);
#endif // wxUSE_HELP
// virtual function for implementing internal idle
// behaviour
virtual void OnInternalIdle();
// Send idle event to window and all subwindows
// Returns true if more idle time is requested.
virtual bool SendIdleEvents(wxIdleEvent& event);
// get the handle of the window for the underlying window system: this
// is only used for wxWin itself or for user code which wants to call
// platform-specific APIs
virtual WXWidget GetHandle() const = 0;
// associate the window with a new native handle
virtual void AssociateHandle(WXWidget WXUNUSED(handle)) { }
// dissociate the current native handle from the window
virtual void DissociateHandle() { }
#if wxUSE_PALETTE
// Store the palette used by DCs in wxWindow so that the dcs can share
// a palette. And we can respond to palette messages.
wxPalette GetPalette() const { return m_palette; }
// When palette is changed tell the DC to set the system palette to the
// new one.
void SetPalette(const wxPalette& pal);
// return true if we have a specific palette
bool HasCustomPalette() const { return m_hasCustomPalette; }
// return the first parent window with a custom palette or NULL
wxWindow *GetAncestorWithCustomPalette() const;
#endif // wxUSE_PALETTE
// inherit the parents visual attributes if they had been explicitly set
// by the user (i.e. we don't inherit default attributes) and if we don't
// have our own explicitly set
virtual void InheritAttributes();
// returns false from here if this window doesn't want to inherit the
// parents colours even if InheritAttributes() would normally do it
//
// this just provides a simple way to customize InheritAttributes()
// behaviour in the most common case
virtual bool ShouldInheritColours() const { return false; }
// returns true if the window can be positioned outside of parent's client
// area (normal windows can't, but e.g. menubar or statusbar can):
virtual bool CanBeOutsideClientArea() const { return false; }
// returns true if the platform should explicitly apply a theme border. Currently
// used only by Windows
virtual bool CanApplyThemeBorder() const { return true; }
// returns the main window of composite control; this is the window
// that FindFocus returns if the focus is in one of composite control's
// windows
virtual wxWindow *GetMainWindowOfCompositeControl()
{ return (wxWindow*)this; }
// If this function returns true, keyboard navigation events shouldn't
// escape from it. A typical example of such "navigation domain" is a top
// level window because pressing TAB in one of them must not transfer focus
// to a different top level window. But it's not limited to them, e.g. MDI
// children frames are not top level windows (and their IsTopLevel()
// returns false) but still are self-contained navigation domains as well.
virtual bool IsTopNavigationDomain() const { return false; }
protected:
// helper for the derived class Create() methods: the first overload, with
// validator parameter, should be used for child windows while the second
// one is used for top level ones
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);
bool CreateBase(wxWindowBase *parent,
wxWindowID winid,
const wxPoint& pos,
const wxSize& size,
long style,
const wxString& name);
// event handling specific to wxWindow
virtual bool TryBefore(wxEvent& event) wxOVERRIDE;
virtual bool TryAfter(wxEvent& event) wxOVERRIDE;
enum WindowOrder
{
OrderBefore, // insert before the given window
OrderAfter // insert after the given window
};
// common part of GetPrev/NextSibling()
wxWindow *DoGetSibling(WindowOrder order) const;
// common part of MoveBefore/AfterInTabOrder()
virtual void DoMoveInTabOrder(wxWindow *win, WindowOrder move);
// implementation of Navigate() and NavigateIn()
virtual bool DoNavigateIn(int flags);
#if wxUSE_CONSTRAINTS
// satisfy the constraints for the windows but don't set the window sizes
void SatisfyConstraints();
#endif // wxUSE_CONSTRAINTS
// Send the wxWindowDestroyEvent if not done yet and sets m_isBeingDeleted
// to true
void SendDestroyEvent();
// this method should be implemented to use operating system specific code
// to really enable/disable the widget, it will only be called when we
// really need to enable/disable window and so no additional checks on the
// widgets state are necessary
virtual void DoEnable(bool WXUNUSED(enable)) { }
// the window id - a number which uniquely identifies a window among
// its siblings unless it is wxID_ANY
wxWindowIDRef m_windowId;
// the parent window of this window (or NULL) and the list of the children
// of this window
wxWindow *m_parent;
wxWindowList m_children;
// the minimal allowed size for the window (no minimal size if variable(s)
// contain(s) wxDefaultCoord)
int m_minWidth,
m_minHeight,
m_maxWidth,
m_maxHeight;
// event handler for this window: usually is just 'this' but may be
// changed with SetEventHandler()
wxEvtHandler *m_eventHandler;
#if wxUSE_VALIDATORS
// associated validator or NULL if none
wxValidator *m_windowValidator;
#endif // wxUSE_VALIDATORS
#if wxUSE_DRAG_AND_DROP
wxDropTarget *m_dropTarget;
#endif // wxUSE_DRAG_AND_DROP
// visual window attributes
wxCursor m_cursor;
wxFont m_font; // see m_hasFont
wxColour m_backgroundColour, // m_hasBgCol
m_foregroundColour; // m_hasFgCol
#if wxUSE_CARET
wxCaret *m_caret;
#endif // wxUSE_CARET
// the region which should be repainted in response to paint event
wxRegion m_updateRegion;
#if wxUSE_ACCEL
// the accelerator table for the window which translates key strokes into
// command events
wxAcceleratorTable m_acceleratorTable;
#endif // wxUSE_ACCEL
// the tooltip for this window (may be NULL)
#if wxUSE_TOOLTIPS
wxToolTip *m_tooltip;
#endif // wxUSE_TOOLTIPS
// constraints and sizers
#if wxUSE_CONSTRAINTS
// the constraints for this window or NULL
wxLayoutConstraints *m_constraints;
// constraints this window is involved in
wxWindowList *m_constraintsInvolvedIn;
#endif // wxUSE_CONSTRAINTS
// this window's sizer
wxSizer *m_windowSizer;
// The sizer this window is a member of, if any
wxSizer *m_containingSizer;
// Layout() window automatically when its size changes?
bool m_autoLayout:1;
// window state
bool m_isShown:1;
bool m_isEnabled:1;
bool m_isBeingDeleted:1;
// was the window colours/font explicitly changed by user?
bool m_hasBgCol:1;
bool m_hasFgCol:1;
bool m_hasFont:1;
// and should it be inherited by children?
bool m_inheritBgCol:1;
bool m_inheritFgCol:1;
bool m_inheritFont:1;
// window attributes
long m_windowStyle,
m_exStyle;
wxString m_windowName;
bool m_themeEnabled;
wxBackgroundStyle m_backgroundStyle;
#if wxUSE_PALETTE
wxPalette m_palette;
bool m_hasCustomPalette;
#endif // wxUSE_PALETTE
#if wxUSE_ACCESSIBILITY
wxAccessible* m_accessible;
#endif
// Virtual size (scrolling)
wxSize m_virtualSize;
wxScrollHelper *m_scrollHelper;
wxWindowVariant m_windowVariant ;
// override this to change the default (i.e. used when no style is
// specified) border for the window class
virtual wxBorder GetDefaultBorder() const;
// this allows you to implement standard control borders without
// repeating the code in different classes that are not derived from
// wxControl
virtual wxBorder GetDefaultBorderForControl() const { return wxBORDER_THEME; }
// Get the default size for the new window if no explicit size given. TLWs
// have their own default size so this is just for non top-level windows.
static int WidthDefault(int w) { return w == wxDefaultCoord ? 20 : w; }
static int HeightDefault(int h) { return h == wxDefaultCoord ? 20 : h; }
// Used to save the results of DoGetBestSize so it doesn't need to be
// recalculated each time the value is needed.
wxSize m_bestSizeCache;
wxDEPRECATED_MSG("use SetInitialSize() instead.")
void SetBestSize(const wxSize& size);
wxDEPRECATED_MSG("use SetInitialSize() instead.")
virtual void SetInitialBestSize(const wxSize& size);
// more pure virtual functions
// ---------------------------
// NB: we must have DoSomething() function when Something() is an overloaded
// method: indeed, we can't just have "virtual Something()" in case when
// the function is overloaded because then we'd have to make virtual all
// the variants (otherwise only the virtual function may be called on a
// pointer to derived class according to C++ rules) which is, in
// general, absolutely not needed. So instead we implement all
// overloaded Something()s in terms of DoSomething() which will be the
// only one to be virtual.
// text extent
virtual void DoGetTextExtent(const wxString& string,
int *x, int *y,
int *descent = NULL,
int *externalLeading = NULL,
const wxFont *font = NULL) const = 0;
// coordinates translation
virtual void DoClientToScreen( int *x, int *y ) const = 0;
virtual void DoScreenToClient( int *x, int *y ) const = 0;
virtual wxHitTest DoHitTest(wxCoord x, wxCoord y) const;
// capture/release the mouse, used by Capture/ReleaseMouse()
virtual void DoCaptureMouse() = 0;
virtual void DoReleaseMouse() = 0;
// retrieve the position/size of the window
virtual void DoGetPosition(int *x, int *y) const = 0;
virtual void DoGetScreenPosition(int *x, int *y) const;
virtual void DoGetSize(int *width, int *height) const = 0;
virtual void DoGetClientSize(int *width, int *height) const = 0;
// get the size which best suits the window: for a control, it would be
// the minimal size which doesn't truncate the control, for a panel - the
// same size as it would have after a call to Fit()
virtual wxSize DoGetBestSize() const;
// this method can be overridden instead of DoGetBestSize() if it computes
// the best size of the client area of the window only, excluding borders
// (GetBorderSize() will be used to add them)
virtual wxSize DoGetBestClientSize() const { return wxDefaultSize; }
// These two methods can be overridden to implement intelligent
// width-for-height and/or height-for-width best size determination for the
// window. By default the fixed best size is used.
virtual int DoGetBestClientHeight(int WXUNUSED(width)) const
{ return wxDefaultCoord; }
virtual int DoGetBestClientWidth(int WXUNUSED(height)) const
{ return wxDefaultCoord; }
// this is the virtual function to be overridden in any derived class which
// wants to change how SetSize() or Move() works - it is called by all
// versions of these functions in the base class
virtual void DoSetSize(int x, int y,
int width, int height,
int sizeFlags = wxSIZE_AUTO) = 0;
// same as DoSetSize() for the client size
virtual void DoSetClientSize(int width, int height) = 0;
virtual void DoSetSizeHints( int minW, int minH,
int maxW, int maxH,
int incW, int incH );
// return the total size of the window borders, i.e. the sum of the widths
// of the left and the right border in the x component of the returned size
// and the sum of the heights of the top and bottom borders in the y one
//
// NB: this is currently only implemented properly for wxMSW, wxGTK and
// wxUniv and doesn't behave correctly in the presence of scrollbars in
// the other ports
virtual wxSize DoGetBorderSize() const;
// move the window to the specified location and resize it: this is called
// from both DoSetSize() and DoSetClientSize() and would usually just
// reposition this window except for composite controls which will want to
// arrange themselves inside the given rectangle
//
// Important note: the coordinates passed to this method are in parent's
// *window* coordinates and not parent's client coordinates (as the values
// passed to DoSetSize and returned by DoGetPosition are)!
virtual void DoMoveWindow(int x, int y, int width, int height) = 0;
// centre the window in the specified direction on parent, note that
// wxCENTRE_ON_SCREEN shouldn't be specified here, it only makes sense for
// TLWs
virtual void DoCentre(int dir);
#if wxUSE_TOOLTIPS
virtual void DoSetToolTipText( const wxString &tip );
virtual void DoSetToolTip( wxToolTip *tip );
#endif // wxUSE_TOOLTIPS
#if wxUSE_MENUS
virtual bool DoPopupMenu(wxMenu *menu, int x, int y) = 0;
#endif // wxUSE_MENUS
// Makes an adjustment to the window position to make it relative to the
// parents client area, e.g. if the parent is a frame with a toolbar, its
// (0, 0) is just below the toolbar
virtual void AdjustForParentClientOrigin(int& x, int& y,
int sizeFlags = 0) const;
// implements the window variants
virtual void DoSetWindowVariant( wxWindowVariant variant ) ;
// really freeze/thaw the window (should have port-specific implementation)
virtual void DoFreeze() { }
virtual void DoThaw() { }
// Must be called when mouse capture is lost to send
// wxMouseCaptureLostEvent to windows on capture stack.
static void NotifyCaptureLost();
private:
// recursively call our own and our children DoEnable() when the
// enabled/disabled status changed because a parent window had been
// enabled/disabled
void NotifyWindowOnEnableChange(bool enabled);
#if wxUSE_MENUS
// temporary event handlers used by GetPopupMenuSelectionFromUser()
void InternalOnPopupMenu(wxCommandEvent& event);
void InternalOnPopupMenuUpdate(wxUpdateUIEvent& event);
// implementation of the public GetPopupMenuSelectionFromUser() method
int DoGetPopupMenuSelectionFromUser(wxMenu& menu, int x, int y);
#endif // wxUSE_MENUS
// layout the window children when its size changes unless this was
// explicitly disabled with SetAutoLayout(false)
void InternalOnSize(wxSizeEvent& event);
// base for dialog unit conversion, i.e. average character size
wxSize GetDlgUnitBase() const;
// number of Freeze() calls minus the number of Thaw() calls: we're frozen
// (i.e. not being updated) if it is positive
unsigned int m_freezeCount;
wxDECLARE_ABSTRACT_CLASS(wxWindowBase);
wxDECLARE_NO_COPY_CLASS(wxWindowBase);
wxDECLARE_EVENT_TABLE();
};
// Inlines for some deprecated methods
inline wxSize wxWindowBase::GetBestFittingSize() const
{
return GetEffectiveMinSize();
}
inline void wxWindowBase::SetBestFittingSize(const wxSize& size)
{
SetInitialSize(size);
}
inline void wxWindowBase::SetBestSize(const wxSize& size)
{
SetInitialSize(size);
}
inline void wxWindowBase::SetInitialBestSize(const wxSize& size)
{
SetInitialSize(size);
}
// ----------------------------------------------------------------------------
// now include the declaration of wxWindow class
// ----------------------------------------------------------------------------
// include the declaration of the platform-specific class
#if defined(__WXMSW__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowMSW
#else // !wxUniv
#define wxWindowMSW wxWindow
#endif // wxUniv/!wxUniv
#include "wx/msw/window.h"
#elif defined(__WXMOTIF__)
#include "wx/motif/window.h"
#elif defined(__WXGTK20__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowGTK
#else // !wxUniv
#define wxWindowGTK wxWindow
#endif // wxUniv
#include "wx/gtk/window.h"
#ifdef __WXGTK3__
#define wxHAVE_DPI_INDEPENDENT_PIXELS
#endif
#elif defined(__WXGTK__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowGTK
#else // !wxUniv
#define wxWindowGTK wxWindow
#endif // wxUniv
#include "wx/gtk1/window.h"
#elif defined(__WXX11__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowX11
#else // !wxUniv
#define wxWindowX11 wxWindow
#endif // wxUniv
#include "wx/x11/window.h"
#elif defined(__WXDFB__)
#define wxWindowNative wxWindowDFB
#include "wx/dfb/window.h"
#elif defined(__WXMAC__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowMac
#else // !wxUniv
#define wxWindowMac wxWindow
#endif // wxUniv
#include "wx/osx/window.h"
#define wxHAVE_DPI_INDEPENDENT_PIXELS
#elif defined(__WXQT__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowQt
#else // !wxUniv
#define wxWindowQt wxWindow
#endif // wxUniv
#include "wx/qt/window.h"
#endif
// for wxUniversal, we now derive the real wxWindow from wxWindow<platform>,
// for the native ports we already have defined it above
#if defined(__WXUNIVERSAL__)
#ifndef wxWindowNative
#error "wxWindowNative must be defined above!"
#endif
#include "wx/univ/window.h"
#endif // wxUniv
// ----------------------------------------------------------------------------
// inline functions which couldn't be declared in the class body because of
// forward dependencies
// ----------------------------------------------------------------------------
inline wxWindow *wxWindowBase::GetGrandParent() const
{
return m_parent ? m_parent->GetParent() : NULL;
}
#ifdef wxHAVE_DPI_INDEPENDENT_PIXELS
// FromDIP() and ToDIP() become trivial in this case, so make them inline to
// avoid any overhead.
/* static */
inline wxSize
wxWindowBase::FromDIP(const wxSize& sz, const wxWindowBase* WXUNUSED(w))
{
return sz;
}
/* static */
inline wxSize
wxWindowBase::ToDIP(const wxSize& sz, const wxWindowBase* WXUNUSED(w))
{
return sz;
}
#endif // wxHAVE_DPI_INDEPENDENT_PIXELS
// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------
// Find the wxWindow at the current mouse position, also returning the mouse
// position.
extern WXDLLIMPEXP_CORE wxWindow* wxFindWindowAtPointer(wxPoint& pt);
// Get the current mouse position.
extern WXDLLIMPEXP_CORE wxPoint wxGetMousePosition();
// get the currently active window of this application or NULL
extern WXDLLIMPEXP_CORE wxWindow *wxGetActiveWindow();
// get the (first) top level parent window
WXDLLIMPEXP_CORE wxWindow* wxGetTopLevelParent(wxWindow *win);
#if wxUSE_ACCESSIBILITY
// ----------------------------------------------------------------------------
// accessible object for windows
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxWindowAccessible: public wxAccessible
{
public:
wxWindowAccessible(wxWindow* win): wxAccessible(win) { if (win) win->SetAccessible(this); }
virtual ~wxWindowAccessible() {}
// Overridables
// Can return either a child object, or an integer
// representing the child element, starting from 1.
virtual wxAccStatus HitTest(const wxPoint& pt, int* childId, wxAccessible** childObject);
// Returns the rectangle for this object (id = 0) or a child element (id > 0).
virtual wxAccStatus GetLocation(wxRect& rect, int elementId);
// Navigates from fromId to toId/toObject.
virtual wxAccStatus Navigate(wxNavDir navDir, int fromId,
int* toId, wxAccessible** toObject);
// Gets the name of the specified object.
virtual wxAccStatus GetName(int childId, wxString* name);
// Gets the number of children.
virtual wxAccStatus GetChildCount(int* childCount);
// Gets the specified child (starting from 1).
// If *child is NULL and return value is wxACC_OK,
// this means that the child is a simple element and
// not an accessible object.
virtual wxAccStatus GetChild(int childId, wxAccessible** child);
// Gets the parent, or NULL.
virtual wxAccStatus GetParent(wxAccessible** parent);
// Performs the default action. childId is 0 (the action for this object)
// or > 0 (the action for a child).
// Return wxACC_NOT_SUPPORTED if there is no default action for this
// window (e.g. an edit control).
virtual wxAccStatus DoDefaultAction(int childId);
// Gets the default action for this object (0) or > 0 (the action for a child).
// Return wxACC_OK even if there is no action. actionName is the action, or the empty
// string if there is no action.
// The retrieved string describes the action that is performed on an object,
// not what the object does as a result. For example, a toolbar button that prints
// a document has a default action of "Press" rather than "Prints the current document."
virtual wxAccStatus GetDefaultAction(int childId, wxString* actionName);
// Returns the description for this object or a child.
virtual wxAccStatus GetDescription(int childId, wxString* description);
// Returns help text for this object or a child, similar to tooltip text.
virtual wxAccStatus GetHelpText(int childId, wxString* helpText);
// Returns the keyboard shortcut for this object or child.
// Return e.g. ALT+K
virtual wxAccStatus GetKeyboardShortcut(int childId, wxString* shortcut);
// Returns a role constant.
virtual wxAccStatus GetRole(int childId, wxAccRole* role);
// Returns a state constant.
virtual wxAccStatus GetState(int childId, long* state);
// Returns a localized string representing the value for the object
// or child.
virtual wxAccStatus GetValue(int childId, wxString* strValue);
// Selects the object or child.
virtual wxAccStatus Select(int childId, wxAccSelectionFlags selectFlags);
// Gets the window with the keyboard focus.
// If childId is 0 and child is NULL, no object in
// this subhierarchy has the focus.
// If this object has the focus, child should be 'this'.
virtual wxAccStatus GetFocus(int* childId, wxAccessible** child);
#if wxUSE_VARIANT
// Gets a variant representing the selected children
// of this object.
// Acceptable values:
// - a null variant (IsNull() returns true)
// - a list variant (GetType() == wxT("list")
// - an integer representing the selected child element,
// or 0 if this object is selected (GetType() == wxT("long")
// - a "void*" pointer to a wxAccessible child object
virtual wxAccStatus GetSelections(wxVariant* selections);
#endif // wxUSE_VARIANT
};
#endif // wxUSE_ACCESSIBILITY
#endif // _WX_WINDOW_H_BASE_
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