// Author: Vadim Zeitlin
// Modified by: Ron Lee
// Created: 01/02/97
-// RCS-ID: $Id$
// Copyright: (c) Vadim Zeitlin
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
*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; }
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 1.0; }
+
// return the size of the left/right and top/bottom borders in x and y
// components of the result respectively
virtual wxSize GetWindowBorderSize() const;
// 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
// ------------
bool HasExtraStyle(int exFlag) const { return (m_exStyle & exFlag) != 0; }
+#if WXWIN_COMPATIBILITY_2_8
// make the window modal (all other windows unresponsive)
- virtual void MakeModal(bool modal = true);
-
+ wxDEPRECATED( virtual void MakeModal(bool modal = true) );
+#endif
// (primitive) theming support
// ---------------------------
virtual bool AcceptsFocusFromKeyboard() const { return AcceptsFocus(); }
- // this is mostly a helper for the various functions using it below
- bool CanBeFocused() const { return IsShown() && IsEnabled(); }
+ // 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(); }
// 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 ) { m_parent = (wxWindow *)parent; }
+ 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 );
wxColour GetForegroundColour() const;
// Set/get the background style.
- virtual bool SetBackgroundStyle(wxBackgroundStyle style)
- { m_backgroundStyle = style; return true; }
+ virtual bool SetBackgroundStyle(wxBackgroundStyle style);
wxBackgroundStyle GetBackgroundStyle() const
{ return m_backgroundStyle; }
// 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;
// ----------
// can the window have the scrollbar in this orientation?
- bool CanScroll(int orient) const
- {
- return (m_windowStyle &
- (orient == wxHORIZONTAL ? wxHSCROLL : wxVSCROLL)) != 0;
- }
+ virtual bool CanScroll(int orient) const;
// does the window have the scrollbar in this orientation?
bool HasScrollbar(int orient) const;
// widgets state are necessary
virtual void DoEnable(bool WXUNUSED(enable)) { }
- // called when the on-screen widget state changes and provides an
- // an opportunity for the widget to update its visual state (colours,
- // fonts, anything else) as necessary
- virtual void OnEnabled(bool WXUNUSED(enabled)) { }
-
// the window id - a number which uniquely identifies a window among
// its siblings unless it is wxID_ANY
// (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
static void NotifyCaptureLost();
private:
- // recursively call our own and our children OnEnabled() when the
+ // 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);
// base for dialog unit conversion, i.e. average character size
wxSize GetDlgUnitBase() const;
- // the stack of windows which have captured the mouse
- static struct WXDLLIMPEXP_FWD_CORE wxWindowNext *ms_winCaptureNext;
-
- // the window that currently has mouse capture
- static wxWindow *ms_winCaptureCurrent;
-
- // indicates if execution is inside CaptureMouse/ReleaseMouse
- static bool ms_winCaptureChanging;
-
// number of Freeze() calls minus the number of Thaw() calls: we're frozen
// (i.e. not being updated) if it is positive
// ----------------------------------------------------------------------------
// include the declaration of the platform-specific class
-#if defined(__WXPALMOS__)
- #ifdef __WXUNIVERSAL__
- #define wxWindowNative wxWindowPalm
- #else // !wxUniv
- #define wxWindowPalm wxWindow
- #endif // wxUniv/!wxUniv
- #include "wx/palmos/window.h"
-#elif defined(__WXMSW__)
+#if defined(__WXMSW__)
#ifdef __WXUNIVERSAL__
#define wxWindowNative wxWindowMSW
#else // !wxUniv
#define wxWindowX11 wxWindow
#endif // wxUniv
#include "wx/x11/window.h"
-#elif defined(__WXMGL__)
- #define wxWindowNative wxWindowMGL
- #include "wx/mgl/window.h"
#elif defined(__WXDFB__)
#define wxWindowNative wxWindowDFB
#include "wx/dfb/window.h"
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