8f1be368e9
Document which pointers can, and can't, be null and when exactly is the stored bitmap valid, as this is far from being immediately obvious. No real changes.
39 lines
1.3 KiB
C++
39 lines
1.3 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/gtk/private/image.h
|
|
// Author: Paul Cornett
|
|
// Copyright: (c) 2020 Paul Cornett
|
|
// Licence: wxWindows licence
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
// Class that can be used in place of GtkImage, to allow drawing of alternate
|
|
// bitmaps, such as HiDPI or disabled.
|
|
|
|
class wxGtkImage: GtkImage
|
|
{
|
|
public:
|
|
struct BitmapProvider
|
|
{
|
|
virtual ~BitmapProvider() { }
|
|
virtual wxBitmap Get() const = 0;
|
|
virtual void Set(const wxBitmap&) { }
|
|
};
|
|
|
|
static GType Type();
|
|
static GtkWidget* New(BitmapProvider* provider);
|
|
static GtkWidget* New(wxWindow* win = NULL);
|
|
void Set(const wxBitmap& bitmap);
|
|
|
|
// This pointer is never null and is owned by this class.
|
|
BitmapProvider* m_provider;
|
|
|
|
wxDECLARE_NO_COPY_CLASS(wxGtkImage);
|
|
|
|
// This class is constructed by New() and destroyed by its GObject
|
|
// finalizer, so neither its ctor nor dtor can ever be used.
|
|
wxGtkImage() wxMEMBER_DELETE;
|
|
~wxGtkImage() wxMEMBER_DELETE;
|
|
};
|
|
|
|
#define WX_GTK_IMAGE(obj) G_TYPE_CHECK_INSTANCE_CAST(obj, wxGtkImage::Type(), wxGtkImage)
|
|
#define WX_GTK_IS_IMAGE(obj) G_TYPE_CHECK_INSTANCE_TYPE(obj, wxGtkImage::Type())
|