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kicad/eeschema/widgets/symbol_preview_widget.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2018-2020 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "symbol_preview_widget.h"
#include <wx/stattext.h>
#include <wx/sizer.h>
#include <kiway.h>
#include <sch_view.h>
#include <gal/gal_display_options.h>
#include <class_libentry.h>
#include <symbol_lib_table.h>
#include <sch_preview_panel.h>
#include <pgm_base.h>
#include <sch_painter.h>
#include <eda_draw_frame.h>
#include <eeschema_settings.h>
#include <settings/settings_manager.h>
SYMBOL_PREVIEW_WIDGET::SYMBOL_PREVIEW_WIDGET( wxWindow* aParent, KIWAY& aKiway,
EDA_DRAW_PANEL_GAL::GAL_TYPE aCanvasType ) :
wxPanel( aParent, wxID_ANY, wxDefaultPosition, wxDefaultSize, 0 ),
m_kiway( aKiway ),
m_preview( nullptr ), m_status( nullptr ), m_statusSizer( nullptr ), m_previewItem( nullptr )
{
auto common_settings = Pgm().GetCommonSettings();
auto app_settings = Pgm().GetSettingsManager().GetAppSettings<EESCHEMA_SETTINGS>();
m_galDisplayOptions.ReadConfig( *common_settings, app_settings->m_Window, this );
m_galDisplayOptions.m_forceDisplayCursor = false;
EDA_DRAW_PANEL_GAL::GAL_TYPE canvasType = aCanvasType;
// Allows only a CAIRO or OPENGL canvas:
if( canvasType != EDA_DRAW_PANEL_GAL::GAL_TYPE_OPENGL
&& canvasType != EDA_DRAW_PANEL_GAL::GAL_FALLBACK )
{
canvasType = EDA_DRAW_PANEL_GAL::GAL_TYPE_OPENGL;
}
m_preview = new SCH_PREVIEW_PANEL( aParent, wxID_ANY, wxDefaultPosition, wxSize( -1, -1 ),
m_galDisplayOptions, canvasType );
m_preview->SetStealsFocus( false );
m_preview->ShowScrollbars( wxSHOW_SB_NEVER, wxSHOW_SB_NEVER );
m_preview->GetGAL()->SetAxesEnabled( false );
// Do not display the grid: the look is not good for a small canvas area.
// But mainly, due to some strange bug I (JPC) was unable to fix, the grid creates
// strange artifacts on Windows when eeschema is run from Kicad manager (but not in
// stand alone...).
m_preview->GetGAL()->SetGridVisibility( false );
// Early initialization of the canvas background color,
// before any OnPaint event is fired for the canvas using a wrong bg color
KIGFX::VIEW* view = m_preview->GetView();
auto settings = static_cast<KIGFX::SCH_RENDER_SETTINGS*>( view->GetPainter()->GetSettings() );
if( auto* theme = Pgm().GetSettingsManager().GetColorSettings( app_settings->m_ColorTheme ) )
settings->LoadColors( theme );
const COLOR4D& backgroundColor = settings->GetBackgroundColor();
const COLOR4D& foregroundColor = settings->GetCursorColor();
m_preview->GetGAL()->SetClearColor( backgroundColor );
m_statusPanel = new wxPanel( this );
m_status = new wxStaticText( m_statusPanel, wxID_ANY, wxEmptyString );
m_statusSizer = new wxBoxSizer( wxVERTICAL );
m_statusSizer->Add( 0, 0, 1 ); // add a spacer
m_statusSizer->Add( m_status, 0, wxALIGN_CENTER );
m_statusSizer->Add( 0, 0, 1 ); // add a spacer
m_statusPanel->SetSizer( m_statusSizer );
// Give the status panel the same color scheme as the canvas so it isn't jarring when switched to
m_statusPanel->SetBackgroundColour( backgroundColor.ToColour() );
m_statusPanel->SetForegroundColour( foregroundColor.ToColour() );
// Give the preview panel a small top border to align its top with the status panel,
// and give the status panel a small bottom border to align its bottom with the preview
// panel.
m_outerSizer = new wxBoxSizer( wxVERTICAL );
m_outerSizer->Add( m_preview, 1, wxTOP | wxEXPAND, 5 );
m_outerSizer->Add( m_statusPanel, 1, wxBOTTOM | wxEXPAND, 5 );
// Hide the status panel to start
m_statusPanel->Hide();
SetSizer( m_outerSizer );
Layout();
Connect( wxEVT_SIZE, wxSizeEventHandler( SYMBOL_PREVIEW_WIDGET::onSize ), NULL, this );
}
SYMBOL_PREVIEW_WIDGET::~SYMBOL_PREVIEW_WIDGET()
{
if( m_previewItem )
m_preview->GetView()->Remove( m_previewItem );
delete m_previewItem;
}
void SYMBOL_PREVIEW_WIDGET::SetStatusText( wxString const& aText )
{
m_status->SetLabel( aText );
m_preview->Hide();
m_statusPanel->Show();
Layout();
}
void SYMBOL_PREVIEW_WIDGET::onSize( wxSizeEvent& aEvent )
{
if( m_previewItem )
{
fitOnDrawArea();
m_preview->ForceRefresh();
}
aEvent.Skip();
}
void SYMBOL_PREVIEW_WIDGET::fitOnDrawArea()
{
if( !m_previewItem )
return;
// set the view scale to fit the item on screen
KIGFX::VIEW* view = m_preview->GetView();
// Calculate the drawing area size, in internal units, for a scaling factor = 1.0
view->SetScale( 1.0 );
VECTOR2D clientSize = view->ToWorld( m_preview->GetClientSize(), false );
// Calculate the draw scale to fit the drawing area
double scale = std::min( fabs( clientSize.x / m_itemBBox.GetWidth() ),
fabs( clientSize.y / m_itemBBox.GetHeight() ) );
// Above calculation will yield an exact fit; add a bit of whitespace around symbol
scale /= 1.2;
// Now fix the best scale
view->SetScale( scale );
view->SetCenter( m_itemBBox.Centre() );
}
void SYMBOL_PREVIEW_WIDGET::DisplaySymbol( const LIB_ID& aSymbolID, int aUnit, int aConvert )
{
KIGFX::VIEW* view = m_preview->GetView();
auto settings = static_cast<KIGFX::SCH_RENDER_SETTINGS*>( view->GetPainter()->GetSettings() );
std::unique_ptr< LIB_PART > symbol;
try
{
LIB_PART* tmp = m_kiway.Prj().SchSymbolLibTable()->LoadSymbol( aSymbolID );
if( tmp )
symbol = tmp->Flatten();
}
catch( const IO_ERROR& ioe )
{
wxLogError( wxString::Format( _( "Error loading symbol %s from library %s.\n\n%s" ),
aSymbolID.GetLibItemName().wx_str(),
aSymbolID.GetLibNickname().wx_str(),
ioe.What() ) );
}
if( m_previewItem )
{
view->Remove( m_previewItem );
delete m_previewItem;
m_previewItem = nullptr;
}
if( symbol )
{
// This will flatten derived parts so that the correct final symbol can be shown.
m_previewItem = symbol.release();
// If unit isn't specified for a multi-unit part, pick the first. (Otherwise we'll
// draw all of them.)
settings->m_ShowUnit = ( m_previewItem->IsMulti() && aUnit == 0 ) ? 1 : aUnit;
// For symbols having a De Morgan body style, use the first style
settings->m_ShowConvert =
( m_previewItem->HasConversion() && aConvert == 0 ) ? 1 : aConvert;
view->Add( m_previewItem );
// Get the symbole size, in internal units
m_itemBBox = m_previewItem->GetUnitBoundingBox( settings->m_ShowUnit,
settings->m_ShowConvert );
if( !m_preview->IsShown() )
{
m_preview->Show();
m_statusPanel->Hide();
Layout(); // Ensure panel size is up to date.
}
// Calculate the draw scale to fit the drawing area
fitOnDrawArea();
}
m_preview->ForceRefresh();
}
void SYMBOL_PREVIEW_WIDGET::DisplayPart( LIB_PART* aPart, int aUnit, int aConvert )
{
KIGFX::VIEW* view = m_preview->GetView();
if( m_previewItem )
{
view->Remove( m_previewItem );
delete m_previewItem;
m_previewItem = nullptr;
}
if( aPart )
{
m_previewItem = new LIB_PART( *aPart );
// For symbols having a De Morgan body style, use the first style
auto settings = static_cast<KIGFX::SCH_RENDER_SETTINGS*>( view->GetPainter()->GetSettings() );
// If unit isn't specified for a multi-unit part, pick the first. (Otherwise we'll
// draw all of them.)
settings->m_ShowUnit = ( m_previewItem->IsMulti() && aUnit == 0 ) ? 1 : aUnit;
settings->m_ShowConvert =
( m_previewItem->HasConversion() && aConvert == 0 ) ? 1 : aConvert;
view->Add( m_previewItem );
// Get the symbole size, in internal units
m_itemBBox = aPart->GetUnitBoundingBox( settings->m_ShowUnit, settings->m_ShowConvert );
// Calculate the draw scale to fit the drawing area
fitOnDrawArea();
}
m_preview->ForceRefresh();
m_preview->Show();
m_statusPanel->Hide();
Layout();
}
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