kicad/common/gal/hidpi_gl_canvas.cpp

/*
 * 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>

#include <gal/dpi_scaling.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 ),
        m_scale_factor( DPI_SCALING::GetDefaultScaleFactor() )
{
    this->LoadSettings();
}

void HIDPI_GL_CANVAS::LoadSettings()
{
    COMMON_SETTINGS* cfg = Pgm().GetCommonSettings();

    m_settings.m_warpCursor            = cfg->m_Input.center_on_zoom;
    m_settings.m_focusFollowSchPcb     = cfg->m_Input.focus_follow_sch_pcb;
    m_settings.m_autoPanSettingEnabled = cfg->m_Input.auto_pan;
    m_settings.m_autoPanAcceleration   = cfg->m_Input.auto_pan_acceleration;
    m_settings.m_horizontalPan         = cfg->m_Input.horizontal_pan;
    m_settings.m_zoomAcceleration      = cfg->m_Input.zoom_acceleration;
    m_settings.m_zoomSpeed             = cfg->m_Input.zoom_speed;
    m_settings.m_zoomSpeedAuto         = cfg->m_Input.zoom_speed_auto;
    m_settings.m_scrollModifierZoom    = cfg->m_Input.scroll_modifier_zoom;
    m_settings.m_scrollModifierPanH    = cfg->m_Input.scroll_modifier_pan_h;
    m_settings.m_scrollModifierPanV    = cfg->m_Input.scroll_modifier_pan_v;
    m_settings.m_dragLeft              = cfg->m_Input.drag_left;
    m_settings.m_dragMiddle            = cfg->m_Input.drag_middle;
    m_settings.m_dragRight             = cfg->m_Input.drag_right;
}

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;
}