/usr/include/wx-3.0/wx/generic/custombgwin.h is in wx3.0-headers 3.0.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Name: wx/generic/custombgwin.h
// Purpose: Generic implementation of wxCustomBackgroundWindow.
// Author: Vadim Zeitlin
// Created: 2011-10-10
// Copyright: (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_GENERIC_CUSTOMBGWIN_H_
#define _WX_GENERIC_CUSTOMBGWIN_H_
#include "wx/bitmap.h"
// A helper to avoid template bloat: this class contains all type-independent
// code of wxCustomBackgroundWindow<> below.
class wxCustomBackgroundWindowGenericBase : public wxCustomBackgroundWindowBase
{
public:
wxCustomBackgroundWindowGenericBase() { }
protected:
void DoEraseBackground(wxEraseEvent& event, wxWindow* win)
{
wxDC& dc = *event.GetDC();
const wxSize clientSize = win->GetClientSize();
const wxSize bitmapSize = m_bitmapBg.GetSize();
for ( int x = 0; x < clientSize.x; x += bitmapSize.x )
{
for ( int y = 0; y < clientSize.y; y += bitmapSize.y )
{
dc.DrawBitmap(m_bitmapBg, x, y);
}
}
}
// The bitmap used for painting the background if valid.
wxBitmap m_bitmapBg;
wxDECLARE_NO_COPY_CLASS(wxCustomBackgroundWindowGenericBase);
};
// ----------------------------------------------------------------------------
// wxCustomBackgroundWindow
// ----------------------------------------------------------------------------
template <class W>
class wxCustomBackgroundWindow : public W,
public wxCustomBackgroundWindowGenericBase
{
public:
typedef W BaseWindowClass;
wxCustomBackgroundWindow() { }
protected:
virtual void DoSetBackgroundBitmap(const wxBitmap& bmp)
{
m_bitmapBg = bmp;
if ( m_bitmapBg.IsOk() )
{
BaseWindowClass::Connect
(
wxEVT_ERASE_BACKGROUND,
wxEraseEventHandler(wxCustomBackgroundWindow::OnEraseBackground)
);
}
else
{
BaseWindowClass::Disconnect
(
wxEVT_ERASE_BACKGROUND,
wxEraseEventHandler(wxCustomBackgroundWindow::OnEraseBackground)
);
}
}
private:
// Event handler for erasing the background which is only used when we have
// a valid background bitmap.
void OnEraseBackground(wxEraseEvent& event)
{
DoEraseBackground(event, this);
}
wxDECLARE_NO_COPY_TEMPLATE_CLASS(wxCustomBackgroundWindow, W);
};
#endif // _WX_GENERIC_CUSTOMBGWIN_H_
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