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/*
* This program source code file is part of KICAD, a free EDA CAD application.
*
* Copyright (C) 2017 Bernhard Stegmaier <stegmaier@sw-systems.de>
* Copyright (C) 2016-2017 Kicad Developers, see change_log.txt for contributors.
*
* Base class for HiDPI aware wxGLCanvas implementations.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <gal/hidpi_gl_canvas.h>
HIDPI_GL_CANVAS::HIDPI_GL_CANVAS( wxWindow *parent,
wxWindowID id,
const int *attribList,
const wxPoint& pos,
const wxSize& size,
long style,
const wxString& name,
const wxPalette& palette ) :
wxGLCanvas( parent, id, attribList, pos, size, style, name, palette )
{
#ifdef RETINA_OPENGL_PATCH
SetViewWantsBestResolution( true );
#endif
}
wxSize HIDPI_GL_CANVAS::GetClientSize() const
{
wxSize size = wxGLCanvas::GetClientSize();
#ifdef RETINA_OPENGL_PATCH
const float scaleFactor = GetBackingScaleFactor();
size.x *= scaleFactor;
size.y *= scaleFactor;
#endif
return size;
}
float HIDPI_GL_CANVAS::GetBackingScaleFactor() const
{
#ifdef RETINA_OPENGL_PATCH
// this is ugly, but original method isn't marked const although it doesn't modify anything
// => clean up when it officially has arrived in wxWidgets
return static_cast< wxGLCanvas* >( const_cast< HIDPI_GL_CANVAS* >( this ))->GetBackingScaleFactor();
#else
return 1.0f;
#endif
}
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