hidpi_gl_canvas.cpp

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/*
 * This program source code file is part of KICAD, a free EDA CAD application.
 *
 * Copyright (C) 2017 Bernhard Stegmaier <[email protected]>
 * 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>
 
#include <gal/dpi_scaling.h>
 
 
HIDPI_GL_CANVAS::HIDPI_GL_CANVAS( const KIGFX::VC_SETTINGS& aSettings, wxWindow* aParent,
 const wxGLAttributes& aGLAttribs, wxWindowID aId,
 const wxPoint& aPos, const wxSize& aSize, long aStyle,
 const wxString& aName, const wxPalette& aPalette ) :
 wxGLCanvas( aParent, aGLAttribs, aId, aPos, aSize, aStyle, aName, aPalette ),
 m_settings( aSettings ),
 m_scale_factor( DPI_SCALING::GetDefaultScaleFactor() )
{
}
 
 
wxSize HIDPI_GL_CANVAS::GetNativePixelSize() const
{
 wxSize size = wxGLCanvas::GetClientSize();
 
 const double scaleFactor = GetScaleFactor();
 size.x *= scaleFactor;
 size.y *= scaleFactor;
 
 return size;
}
 
 
wxPoint HIDPI_GL_CANVAS::GetNativePosition( const wxPoint& aPoint ) const
{
 wxPoint nativePoint = aPoint;
 
 const double scaleFactor = GetScaleFactor();
 nativePoint.x *= scaleFactor;
 nativePoint.y *= scaleFactor;
 
 return nativePoint;
}
 
 
void HIDPI_GL_CANVAS::SetScaleFactor( double aNewScaleFactor )
{
 m_scale_factor = aNewScaleFactor;
}
 
 
double HIDPI_GL_CANVAS::GetScaleFactor() const
{
 return m_scale_factor;
}