sch_draw_panel.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2014-2019 CERN
 * @author Maciej Suminski <[email protected]>
 * Copyright (C) 2019-2021 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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 <sch_draw_panel.h>

#include <wx/debug.h>
#include <wx/event.h>
#include <wx/gdicmn.h>
#include <wx/window.h>
#include <wx/windowid.h>
#include <memory>
#include <stdexcept>

#include <confirm.h>
#include <eda_draw_frame.h>
#include <gal/definitions.h>
#include <gal/graphics_abstraction_layer.h>
#include <layer_ids.h>
#include <math/vector2d.h>
#include <pgm_base.h>
#include <settings/settings_manager.h>
#include <view/view.h>
#include <view/view_controls.h>
#include <view/wx_view_controls.h>

#include <sch_base_frame.h>
#include <sch_painter.h>
#include <zoom_defines.h>


SCH_DRAW_PANEL::SCH_DRAW_PANEL( wxWindow* aParentWindow, wxWindowID aWindowId,
 const wxPoint& aPosition, const wxSize& aSize,
 KIGFX::GAL_DISPLAY_OPTIONS& aOptions, GAL_TYPE aGalType )
 : EDA_DRAW_PANEL_GAL( aParentWindow, aWindowId, aPosition, aSize, aOptions, aGalType )
{
 m_view = new KIGFX::SCH_VIEW( true, dynamic_cast<SCH_BASE_FRAME*>( GetParentEDAFrame() ) );
 m_view->SetGAL( m_gal );

 m_gal->SetWorldUnitLength( SCH_WORLD_UNIT );

 m_painter.reset( new KIGFX::SCH_PAINTER( m_gal ) );

 COLOR_SETTINGS* cs = nullptr;

 if( auto frame = dynamic_cast<SCH_BASE_FRAME*>( GetParentEDAFrame() ) )
 cs = frame->GetColorSettings();
 else
 cs = Pgm().GetSettingsManager().GetColorSettings();

 wxASSERT( cs );
 m_painter->GetSettings()->LoadColors( cs );

 m_view->SetPainter( m_painter.get() );
 // This fixes the zoom in and zoom out limits:
 m_view->SetScaleLimits( ZOOM_MAX_LIMIT_EESCHEMA, ZOOM_MIN_LIMIT_EESCHEMA );
 m_view->SetMirror( false, false );

 // Early initialization of the canvas background color,
 // before any OnPaint event is fired for the canvas using a wrong bg color
 auto settings = m_painter->GetSettings();
 m_gal->SetClearColor( settings->GetBackgroundColor() );

 setDefaultLayerOrder();
 setDefaultLayerDeps();

 GetView()->UpdateAllLayersOrder();

 // View controls is the first in the event handler chain, so the Tool Framework operates
 // on updated viewport data.
 m_viewControls = new KIGFX::WX_VIEW_CONTROLS( m_view, this );

 SetEvtHandlerEnabled( true );
 SetFocus();
 Show( true );
 Raise();
 StartDrawing();
}


SCH_DRAW_PANEL::~SCH_DRAW_PANEL()
{
}


void SCH_DRAW_PANEL::DisplaySymbol( LIB_SYMBOL* aSymbol )
{
 GetView()->Clear();
 GetView()->DisplaySymbol( aSymbol );
}


void SCH_DRAW_PANEL::DisplaySheet( SCH_SCREEN *aScreen )
{
 GetView()->Clear();

 if( aScreen )
 GetView()->DisplaySheet( aScreen );
 else
 GetView()->Cleanup();
}


void SCH_DRAW_PANEL::setDefaultLayerOrder()
{
 for( LAYER_NUM i = 0; (unsigned) i < sizeof( SCH_LAYER_ORDER ) / sizeof( LAYER_NUM ); ++i )
 {
 LAYER_NUM layer = SCH_LAYER_ORDER[i];
 wxASSERT( layer < KIGFX::VIEW::VIEW_MAX_LAYERS );

 m_view->SetLayerOrder( layer, i );
 }
}


bool SCH_DRAW_PANEL::SwitchBackend( GAL_TYPE aGalType )
{
 bool rv = EDA_DRAW_PANEL_GAL::SwitchBackend( aGalType );
 setDefaultLayerDeps();
 m_gal->SetWorldUnitLength( SCH_WORLD_UNIT );

 Refresh();

 return rv;
}


void SCH_DRAW_PANEL::setDefaultLayerDeps()
{
 // caching makes no sense for Cairo and other software renderers
 auto target = m_backend == GAL_TYPE_OPENGL ? KIGFX::TARGET_CACHED : KIGFX::TARGET_NONCACHED;

 for( int i = 0; i < KIGFX::VIEW::VIEW_MAX_LAYERS; i++ )
 m_view->SetLayerTarget( i, target );

 // Bitmaps are draw on a non cached GAL layer:
 m_view->SetLayerTarget( LAYER_DRAW_BITMAPS, KIGFX::TARGET_NONCACHED );

 // Some draw layers need specific settings
 m_view->SetLayerTarget( LAYER_GP_OVERLAY, KIGFX::TARGET_OVERLAY );
 m_view->SetLayerDisplayOnly( LAYER_GP_OVERLAY ) ;

 m_view->SetLayerTarget( LAYER_SELECT_OVERLAY, KIGFX::TARGET_OVERLAY );
 m_view->SetLayerDisplayOnly( LAYER_SELECT_OVERLAY ) ;

 m_view->SetLayerTarget( LAYER_DRAWINGSHEET, KIGFX::TARGET_NONCACHED );
 m_view->SetLayerDisplayOnly( LAYER_DRAWINGSHEET ) ;

// m_view->SetLayerTarget( LAYER_SELECTION_SHADOWS, KIGFX::TARGET_NONCACHED );
// m_view->SetLayerDisplayOnly( LAYER_SELECTION_SHADOWS ) ;
}


KIGFX::SCH_VIEW* SCH_DRAW_PANEL::GetView() const
{
 return static_cast<KIGFX::SCH_VIEW*>( m_view );
}


void SCH_DRAW_PANEL::OnShow()
{
 SCH_BASE_FRAME* frame = dynamic_cast<SCH_BASE_FRAME*>( GetParentEDAFrame() );

 try
 {
 // Check if the current rendering backend can be properly initialized
 m_view->UpdateItems();
 }
 catch( const std::runtime_error& e )
 {
 DisplayInfoMessage( frame, e.what() );

 // Use fallback if one is available
 if( GAL_FALLBACK != m_backend )
 {
 SwitchBackend( GAL_FALLBACK );

 if( frame )
 frame->ActivateGalCanvas();
 }
 }
}


void SCH_DRAW_PANEL::onPaint( wxPaintEvent& aEvent )
{
 // The first wxPaintEvent can be fired at startup before the GAL engine is fully initialized
 // (depending on platforms). Do nothing in this case
 if( !m_gal->IsInitialized() || !m_gal->IsVisible() )
 return;

 EDA_DRAW_PANEL_GAL::onPaint( aEvent );
}