485 lines
18 KiB
C++
485 lines
18 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/gtk/window.h
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// Purpose:
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// Author: Robert Roebling
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// Copyright: (c) 1998 Robert Roebling
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_GTK_WINDOW_H_
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#define _WX_GTK_WINDOW_H_
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#include "wx/dynarray.h"
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#ifdef __WXGTK3__
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typedef struct _cairo cairo_t;
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typedef struct _GtkStyleProvider GtkStyleProvider;
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typedef struct _GtkCssProvider GtkCssProvider;
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#define WXUNUSED_IN_GTK2(x) x
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#define WXUNUSED_IN_GTK3(x)
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#else
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#define WXUNUSED_IN_GTK2(x)
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#define WXUNUSED_IN_GTK3(x) x
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#endif
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typedef struct _GdkEventKey GdkEventKey;
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typedef struct _GtkIMContext GtkIMContext;
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WX_DEFINE_EXPORTED_ARRAY_PTR(GdkWindow *, wxArrayGdkWindows);
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extern "C"
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{
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typedef void (*wxGTKCallback)();
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}
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//-----------------------------------------------------------------------------
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// wxWindowGTK
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//-----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxWindowGTK : public wxWindowBase
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{
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public:
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// creating the window
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// -------------------
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wxWindowGTK();
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wxWindowGTK(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = 0,
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const wxString& name = wxPanelNameStr);
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bool Create(wxWindow *parent,
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wxWindowID id,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = 0,
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const wxString& name = wxPanelNameStr);
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virtual ~wxWindowGTK();
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// implement base class (pure) virtual methods
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// -------------------------------------------
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virtual void Raise() wxOVERRIDE;
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virtual void Lower() wxOVERRIDE;
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virtual bool Show( bool show = true ) wxOVERRIDE;
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virtual bool IsShown() const wxOVERRIDE;
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virtual bool IsRetained() const wxOVERRIDE;
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virtual void SetFocus() wxOVERRIDE;
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// hint from wx to native GTK+ tab traversal code
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virtual void SetCanFocus(bool canFocus) wxOVERRIDE;
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virtual bool Reparent( wxWindowBase *newParent ) wxOVERRIDE;
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virtual void WarpPointer(int x, int y) wxOVERRIDE;
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virtual void Refresh( bool eraseBackground = true,
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const wxRect *rect = (const wxRect *) NULL ) wxOVERRIDE;
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virtual void Update() wxOVERRIDE;
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virtual void ClearBackground() wxOVERRIDE;
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virtual bool SetBackgroundColour( const wxColour &colour ) wxOVERRIDE;
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virtual bool SetForegroundColour( const wxColour &colour ) wxOVERRIDE;
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virtual bool SetCursor( const wxCursor &cursor ) wxOVERRIDE;
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virtual bool SetFont( const wxFont &font ) wxOVERRIDE;
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virtual bool SetBackgroundStyle(wxBackgroundStyle style) wxOVERRIDE ;
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virtual bool IsTransparentBackgroundSupported(wxString* reason = NULL) const wxOVERRIDE;
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virtual int GetCharHeight() const wxOVERRIDE;
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virtual int GetCharWidth() const wxOVERRIDE;
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virtual double GetContentScaleFactor() const wxOVERRIDE;
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virtual void SetScrollbar( int orient, int pos, int thumbVisible,
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int range, bool refresh = true ) wxOVERRIDE;
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virtual void SetScrollPos( int orient, int pos, bool refresh = true ) wxOVERRIDE;
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virtual int GetScrollPos( int orient ) const wxOVERRIDE;
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virtual int GetScrollThumb( int orient ) const wxOVERRIDE;
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virtual int GetScrollRange( int orient ) const wxOVERRIDE;
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virtual void ScrollWindow( int dx, int dy,
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const wxRect* rect = NULL ) wxOVERRIDE;
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virtual bool ScrollLines(int lines) wxOVERRIDE;
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virtual bool ScrollPages(int pages) wxOVERRIDE;
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#if wxUSE_DRAG_AND_DROP
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virtual void SetDropTarget( wxDropTarget *dropTarget ) wxOVERRIDE;
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#endif // wxUSE_DRAG_AND_DROP
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virtual void AddChild( wxWindowBase *child ) wxOVERRIDE;
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virtual void RemoveChild( wxWindowBase *child ) wxOVERRIDE;
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virtual void SetLayoutDirection(wxLayoutDirection dir) wxOVERRIDE;
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virtual wxLayoutDirection GetLayoutDirection() const wxOVERRIDE;
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virtual wxCoord AdjustForLayoutDirection(wxCoord x,
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wxCoord width,
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wxCoord widthTotal) const wxOVERRIDE;
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virtual bool DoIsExposed( int x, int y ) const wxOVERRIDE;
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virtual bool DoIsExposed( int x, int y, int w, int h ) const wxOVERRIDE;
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// currently wxGTK2-only
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void SetDoubleBuffered(bool on);
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virtual bool IsDoubleBuffered() const wxOVERRIDE;
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// SetLabel(), which does nothing in wxWindow
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virtual void SetLabel(const wxString& label) wxOVERRIDE { m_gtkLabel = label; }
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virtual wxString GetLabel() const wxOVERRIDE { return m_gtkLabel; }
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// implementation
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// --------------
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virtual WXWidget GetHandle() const wxOVERRIDE { return m_widget; }
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// many important things are done here, this function must be called
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// regularly
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virtual void OnInternalIdle() wxOVERRIDE;
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// For compatibility across platforms (not in event table)
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void OnIdle(wxIdleEvent& WXUNUSED(event)) {}
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// Used by all window classes in the widget creation process.
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bool PreCreation( wxWindowGTK *parent, const wxPoint &pos, const wxSize &size );
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void PostCreation();
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// Internal addition of child windows
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void DoAddChild(wxWindowGTK *child);
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// This method sends wxPaintEvents to the window.
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// It is also responsible for background erase events.
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#ifdef __WXGTK3__
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void GTKSendPaintEvents(cairo_t* cr);
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#else
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void GTKSendPaintEvents(const GdkRegion* region);
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#endif
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// The methods below are required because many native widgets
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// are composed of several subwidgets and setting a style for
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// the widget means setting it for all subwidgets as well.
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// also, it is not clear which native widget is the top
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// widget where (most of) the input goes. even tooltips have
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// to be applied to all subwidgets.
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virtual GtkWidget* GetConnectWidget();
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void ConnectWidget( GtkWidget *widget );
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// Called from several event handlers, if it returns true or false, the
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// same value should be immediately returned by the handler without doing
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// anything else. If it returns -1, the handler should continue as usual
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int GTKCallbackCommonPrologue(struct _GdkEventAny *event) const;
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// Simplified form of GTKCallbackCommonPrologue() which can be used from
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// GTK callbacks without return value to check if the event should be
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// ignored: if this returns true, the event shouldn't be handled
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bool GTKShouldIgnoreEvent() const;
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// override this if some events should never be consumed by wxWidgets but
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// but have to be left for the native control
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//
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// base version just calls HandleWindowEvent()
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virtual bool GTKProcessEvent(wxEvent& event) const;
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// Map GTK widget direction of the given widget to/from wxLayoutDirection
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static wxLayoutDirection GTKGetLayout(GtkWidget *widget);
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static void GTKSetLayout(GtkWidget *widget, wxLayoutDirection dir);
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// This is called when capture is taken from the window. It will
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// fire off capture lost events.
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void GTKReleaseMouseAndNotify();
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static void GTKHandleCaptureLost();
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GdkWindow* GTKGetDrawingWindow() const;
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bool GTKHandleFocusIn();
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bool GTKHandleFocusOut();
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void GTKHandleFocusOutNoDeferring();
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static void GTKHandleDeferredFocusOut();
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// Called when m_widget becomes realized. Derived classes must call the
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// base class method if they override it.
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virtual void GTKHandleRealized();
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void GTKHandleUnrealize();
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protected:
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// for controls composed of multiple GTK widgets, return true to eliminate
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// spurious focus events if the focus changes between GTK+ children within
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// the same wxWindow
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virtual bool GTKNeedsToFilterSameWindowFocus() const { return false; }
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// Override GTKWidgetNeedsMnemonic and return true if your
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// needs to set its mnemonic widget, such as for a
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// GtkLabel for wxStaticText, then do the actual
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// setting of the widget inside GTKWidgetDoSetMnemonic
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virtual bool GTKWidgetNeedsMnemonic() const;
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virtual void GTKWidgetDoSetMnemonic(GtkWidget* w);
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// Get the GdkWindows making part of this window: usually there will be
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// only one of them in which case it should be returned directly by this
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// function. If there is more than one GdkWindow (can be the case for
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// composite widgets), return NULL and fill in the provided array
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//
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// This is not pure virtual for backwards compatibility but almost
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// certainly must be overridden in any wxControl-derived class!
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virtual GdkWindow *GTKGetWindow(wxArrayGdkWindows& windows) const;
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// Check if the given window makes part of this widget
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bool GTKIsOwnWindow(GdkWindow *window) const;
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public:
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// Returns the default context which usually is anti-aliased
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PangoContext *GTKGetPangoDefaultContext();
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#if wxUSE_TOOLTIPS
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// applies tooltip to the widget (tip must be UTF-8 encoded)
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virtual void GTKApplyToolTip(const char* tip);
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#endif // wxUSE_TOOLTIPS
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// Called when a window should delay showing itself
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// until idle time used in Reparent().
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void GTKShowOnIdle() { m_showOnIdle = true; }
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// This is called from the various OnInternalIdle methods
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bool GTKShowFromOnIdle();
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// is this window transparent for the mouse events (as wxStaticBox is)?
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virtual bool GTKIsTransparentForMouse() const { return false; }
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// Common scroll event handling code for wxWindow and wxScrollBar
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wxEventType GTKGetScrollEventType(GtkRange* range);
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// position and size of the window
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int m_x, m_y;
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int m_width, m_height;
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int m_clientWidth, m_clientHeight;
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// Whether the client size variables above are known to be correct
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// (because they have been validated by a size-allocate) and should
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// be used to report client size
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bool m_useCachedClientSize;
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// Whether the GtkAllocation and GdkWindow positions are known to be correct
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bool m_isGtkPositionValid;
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// see the docs in src/gtk/window.cpp
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GtkWidget *m_widget; // mostly the widget seen by the rest of GTK
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GtkWidget *m_wxwindow; // mostly the client area as per wxWidgets
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// label for use with GetLabelSetLabel
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wxString m_gtkLabel;
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// return true if the window is of a standard (i.e. not wxWidgets') class
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bool IsOfStandardClass() const { return m_wxwindow == NULL; }
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// this widget will be queried for GTK's focus events
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GtkWidget *m_focusWidget;
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void GTKDisableFocusOutEvent();
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void GTKEnableFocusOutEvent();
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// Input method support
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// The IM context used for generic, i.e. non-native, windows.
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//
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// It might be a good idea to avoid allocating it unless key events from
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// this window are really needed but currently we do it unconditionally.
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//
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// For native widgets (i.e. those for which IsOfStandardClass() returns
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// true) it is NULL.
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GtkIMContext* m_imContext;
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// Pointer to the event being currently processed by the IME or NULL if not
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// inside key handling.
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GdkEventKey* m_imKeyEvent;
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// This method generalizes gtk_im_context_filter_keypress(): for the
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// generic windows it does just that but it's overridden by the classes
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// wrapping native widgets that use IM themselves and so provide specific
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// methods for accessing it such gtk_entry_im_context_filter_keypress().
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virtual int GTKIMFilterKeypress(GdkEventKey* event) const;
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// This method must be called from the derived classes "insert-text" signal
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// handlers to check if the text is not being inserted by the IM and, if
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// this is the case, generate appropriate wxEVT_CHAR events for it.
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//
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// Returns true if we did generate and process events corresponding to this
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// text or false if we didn't handle it.
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bool GTKOnInsertText(const char* text);
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// This is just a helper of GTKOnInsertText() which is also used by GTK+
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// "commit" signal handler.
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bool GTKDoInsertTextFromIM(const char* text);
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// indices for the arrays below
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enum ScrollDir { ScrollDir_Horz, ScrollDir_Vert, ScrollDir_Max };
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// horizontal/vertical scroll bar
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GtkRange* m_scrollBar[ScrollDir_Max];
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// horizontal/vertical scroll position
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double m_scrollPos[ScrollDir_Max];
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// return the scroll direction index corresponding to the given orientation
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// (which is wxVERTICAL or wxHORIZONTAL)
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static ScrollDir ScrollDirFromOrient(int orient)
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{
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return orient == wxVERTICAL ? ScrollDir_Vert : ScrollDir_Horz;
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}
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// return the orientation for the given scrolling direction
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static int OrientFromScrollDir(ScrollDir dir)
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{
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return dir == ScrollDir_Horz ? wxHORIZONTAL : wxVERTICAL;
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}
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// find the direction of the given scrollbar (must be one of ours)
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ScrollDir ScrollDirFromRange(GtkRange *range) const;
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void GTKUpdateCursor(
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bool isBusyOrGlobalCursor = false,
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bool isRealize = false,
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const wxCursor* overrideCursor = NULL);
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// extra (wxGTK-specific) flags
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bool m_noExpose:1; // wxGLCanvas has its own redrawing
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bool m_nativeSizeEvent:1; // wxGLCanvas sends wxSizeEvent upon "alloc_size"
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bool m_isScrolling:1; // dragging scrollbar thumb?
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bool m_clipPaintRegion:1; // true after ScrollWindow()
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bool m_dirtyTabOrder:1; // tab order changed, GTK focus
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// chain needs update
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bool m_mouseButtonDown:1;
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bool m_showOnIdle:1; // postpone showing the window until idle
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bool m_needCursorReset:1;
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wxRegion m_nativeUpdateRegion; // not transformed for RTL
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protected:
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// implement the base class pure virtuals
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virtual void DoGetTextExtent(const wxString& string,
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int *x, int *y,
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int *descent = NULL,
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int *externalLeading = NULL,
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const wxFont *font = NULL) const wxOVERRIDE;
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virtual void DoClientToScreen( int *x, int *y ) const wxOVERRIDE;
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virtual void DoScreenToClient( int *x, int *y ) const wxOVERRIDE;
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virtual void DoGetPosition( int *x, int *y ) const wxOVERRIDE;
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virtual void DoGetSize( int *width, int *height ) const wxOVERRIDE;
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virtual void DoGetClientSize( int *width, int *height ) const wxOVERRIDE;
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virtual void DoSetSize(int x, int y,
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int width, int height,
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int sizeFlags = wxSIZE_AUTO) wxOVERRIDE;
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virtual void DoSetClientSize(int width, int height) wxOVERRIDE;
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virtual wxSize DoGetBorderSize() const wxOVERRIDE;
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virtual void DoMoveWindow(int x, int y, int width, int height) wxOVERRIDE;
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virtual void DoEnable(bool enable) wxOVERRIDE;
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#if wxUSE_MENUS_NATIVE
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virtual bool DoPopupMenu( wxMenu *menu, int x, int y ) wxOVERRIDE;
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#endif // wxUSE_MENUS_NATIVE
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virtual void DoCaptureMouse() wxOVERRIDE;
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virtual void DoReleaseMouse() wxOVERRIDE;
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virtual void DoFreeze() wxOVERRIDE;
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virtual void DoThaw() wxOVERRIDE;
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void GTKConnectFreezeWidget(GtkWidget* widget);
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void GTKFreezeWidget(GtkWidget *w);
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void GTKThawWidget(GtkWidget *w);
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void GTKDisconnect(void* instance);
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#if wxUSE_TOOLTIPS
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virtual void DoSetToolTip( wxToolTip *tip ) wxOVERRIDE;
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#endif // wxUSE_TOOLTIPS
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// Create a GtkScrolledWindow containing the given widget (usually
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// m_wxwindow but not necessarily) and assigns it to m_widget. Also shows
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// the widget passed to it.
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//
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// Can be only called if we have either wxHSCROLL or wxVSCROLL in our
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// style.
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void GTKCreateScrolledWindowWith(GtkWidget* view);
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virtual void DoMoveInTabOrder(wxWindow *win, WindowOrder move) wxOVERRIDE;
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virtual bool DoNavigateIn(int flags) wxOVERRIDE;
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// Copies m_children tab order to GTK focus chain:
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void RealizeTabOrder();
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#ifdef __WXGTK3__
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// Use the given CSS string for styling the widget. The provider must be
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// allocated, and remains owned, by the caller.
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void ApplyCssStyle(GtkCssProvider* provider, const char* style);
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#else // GTK+ < 3
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// Called by ApplyWidgetStyle (which is called by SetFont() and
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// SetXXXColour etc to apply style changed to native widgets) to create
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// modified GTK style with non-standard attributes.
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GtkRcStyle* GTKCreateWidgetStyle();
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#endif
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void GTKApplyWidgetStyle(bool forceStyle = false);
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// helper function to ease native widgets wrapping, called by
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// ApplyWidgetStyle -- override this, not ApplyWidgetStyle
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virtual void DoApplyWidgetStyle(GtkRcStyle *style);
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void GTKApplyStyle(GtkWidget* widget, GtkRcStyle* style);
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// sets the border of a given GtkScrolledWindow from a wx style
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static void GTKScrolledWindowSetBorder(GtkWidget* w, int style);
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// Connect the given function to the specified signal on m_widget.
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//
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// This is just a wrapper for g_signal_connect() and returns the handler id
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// just as it does.
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unsigned long GTKConnectWidget(const char *signal, wxGTKCallback callback);
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void ConstrainSize();
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#ifdef __WXGTK3__
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static GdkWindow* GTKFindWindow(GtkWidget* widget);
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static void GTKFindWindow(GtkWidget* widget, wxArrayGdkWindows& windows);
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#endif
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private:
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void Init();
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// return true if this window must have a non-NULL parent, false if it can
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// be created without parent (normally only top level windows but in wxGTK
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// there is also the exception of wxMenuBar)
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virtual bool GTKNeedsParent() const { return !IsTopLevel(); }
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enum ScrollUnit { ScrollUnit_Line, ScrollUnit_Page, ScrollUnit_Max };
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// common part of ScrollLines() and ScrollPages() and could be used, in the
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// future, for horizontal scrolling as well
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//
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// return true if we scrolled, false otherwise (on error or simply if we
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// are already at the end)
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bool DoScrollByUnits(ScrollDir dir, ScrollUnit unit, int units);
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virtual void AddChildGTK(wxWindowGTK* child);
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#ifdef __WXGTK3__
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// paint context is stashed here so wxPaintDC can use it
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cairo_t* m_paintContext;
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// style provider for "background-image"
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GtkStyleProvider* m_styleProvider;
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public:
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cairo_t* GTKPaintContext() const
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{
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return m_paintContext;
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}
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void GTKSizeRevalidate();
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#endif
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wxDECLARE_DYNAMIC_CLASS(wxWindowGTK);
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wxDECLARE_NO_COPY_CLASS(wxWindowGTK);
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};
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#endif // _WX_GTK_WINDOW_H_
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