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