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///////////////////////////////////////////////////////////////////////////////
// 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(int scale) const = 0;
virtual void Set(const wxBitmapBundle&) { }
// Simple helpers used in implementation.
static wxBitmap GetAtScale(const wxBitmapBundle& b, int scale)
{
return b.GetBitmap(b.GetDefaultSize() * scale);
}
};
static GType Type();
static GtkWidget* New(BitmapProvider* provider);
static GtkWidget* New(wxWindow* win = NULL);
// Use bitmaps from the given bundle, the logical bitmap size is the
// default size of the bundle.
void Set(const wxBitmapBundle& bitmapBundle);
// 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())
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