kicad/pcbnew/footprint_preview_panel.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2016-2019 KiCad Developers, see AUTHORS.txt for contributors.
* Copyright (C) 2017 Chris Pavlina <pavlina.chris@gmail.com>
* Copyright (C) 2016 Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
*
* 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 <memory>
#include <mutex>
#include <utility>
#include "pcbnew_settings.h"
#include <class_board.h>
#include <class_module.h>
#include <eda_draw_frame.h>
#include <footprint_preview_panel.h>
#include <fp_lib_table.h>
#include <id.h>
#include <io_mgr.h>
#include <kiface_i.h>
#include <kiway.h>
#include <math/box2.h>
#include <painter.h>
#include <pcb_draw_panel_gal.h>
#include <pcb_edit_frame.h>
#include <pgm_base.h>
#include <settings/settings_manager.h>
#include <view/view.h>
#include <wx/stattext.h>
/**
* Threadsafe interface class between loader thread and panel class.
*/
class FP_THREAD_IFACE
{
using CACHE_ENTRY = FOOTPRINT_PREVIEW_PANEL::CACHE_ENTRY;
public:
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FP_THREAD_IFACE() : m_panel( nullptr )
{
}
/// Retrieve a cache entry by LIB_ID
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OPT<CACHE_ENTRY> GetFromCache( const LIB_ID& aFPID )
{
std::lock_guard<std::mutex> lock( m_lock );
auto it = m_cachedFootprints.find( aFPID );
if( it != m_cachedFootprints.end() )
return it->second;
else
return NULLOPT;
}
/**
* Push an entry to the loading queue and a placeholder to the cache;
* return the placeholder.
*/
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CACHE_ENTRY AddToQueue( const LIB_ID& aEntry )
{
std::lock_guard<std::mutex> lock( m_lock );
CACHE_ENTRY ent = { aEntry, nullptr, FPS_LOADING };
m_cachedFootprints[aEntry] = ent;
m_loaderQueue.push_back( ent );
return ent;
}
/// Pop an entry from the queue, or empty option if none is available.
OPT<CACHE_ENTRY> PopFromQueue()
{
std::lock_guard<std::mutex> lock( m_lock );
if( m_loaderQueue.empty() )
{
return NULLOPT;
}
else
{
auto ent = m_loaderQueue.front();
m_loaderQueue.pop_front();
return ent;
}
}
/// Add an entry to the cache.
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void AddToCache( const CACHE_ENTRY& aEntry )
{
std::lock_guard<std::mutex> lock( m_lock );
m_cachedFootprints[aEntry.fpid] = aEntry;
}
/**
* Threadsafe accessor to set the current footprint.
*/
void SetCurrentFootprint( LIB_ID aFp )
{
std::lock_guard<std::mutex> lock( m_lock );
m_current_fp = std::move( aFp );
}
/**
* Threadsafe accessor to get the current footprint.
*/
LIB_ID GetCurrentFootprint()
{
std::lock_guard<std::mutex> lock( m_lock );
return m_current_fp;
}
/**
* Set the associated panel, for QueueEvent() and GetTable().
*/
void SetPanel( FOOTPRINT_PREVIEW_PANEL* aPanel )
{
std::lock_guard<std::mutex> lock( m_lock );
m_panel = aPanel;
}
/**
* Get the associated panel.
*/
FOOTPRINT_PREVIEW_PANEL* GetPanel()
{
std::lock_guard<std::mutex> lock( m_lock );
return m_panel;
}
/**
* Post an event to the panel, if the panel still exists. Return whether
* the event was posted.
*/
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bool QueueEvent( const wxEvent& aEvent )
{
std::lock_guard<std::mutex> lock( m_lock );
if( m_panel )
{
m_panel->GetEventHandler()->QueueEvent( aEvent.Clone() );
return true;
}
else
{
return false;
}
}
/**
* Get an FP_LIB_TABLE, or null if the panel is dead.
*/
FP_LIB_TABLE* GetTable()
{
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std::lock_guard<std::mutex> lock( m_lock );
return m_panel ? m_panel->Prj().PcbFootprintLibs() : nullptr;
}
private:
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std::deque<CACHE_ENTRY> m_loaderQueue;
std::map<LIB_ID, CACHE_ENTRY> m_cachedFootprints;
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LIB_ID m_current_fp;
FOOTPRINT_PREVIEW_PANEL* m_panel;
std::mutex m_lock;
};
/**
* Footprint loader thread to prevent footprint loading from locking the UI.
* Interface is via a FP_THREAD_IFACE.
*/
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class FP_LOADER_THREAD : public wxThread
{
using CACHE_ENTRY = FOOTPRINT_PREVIEW_PANEL::CACHE_ENTRY;
std::shared_ptr<FP_THREAD_IFACE> m_iface;
public:
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FP_LOADER_THREAD( const std::shared_ptr<FP_THREAD_IFACE>& aIface )
: wxThread( wxTHREAD_DETACHED ), m_iface( aIface )
{
}
~FP_LOADER_THREAD()
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{
}
void ProcessEntry( CACHE_ENTRY& aEntry )
{
FP_LIB_TABLE* fptbl = m_iface->GetTable();
if( !fptbl )
return;
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try
{
aEntry.module.reset( fptbl->FootprintLoadWithOptionalNickname( aEntry.fpid ) );
if( !aEntry.module )
aEntry.status = FPS_NOT_FOUND;
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}
catch( const IO_ERROR& )
{
aEntry.status = FPS_NOT_FOUND;
}
if( aEntry.status != FPS_NOT_FOUND )
aEntry.status = FPS_READY;
m_iface->AddToCache( aEntry );
if( aEntry.fpid == m_iface->GetCurrentFootprint() )
{
wxCommandEvent evt( wxEVT_COMMAND_TEXT_UPDATED, 1 );
m_iface->QueueEvent( evt );
}
}
virtual void* Entry() override
{
while( m_iface->GetPanel() )
{
auto ent = m_iface->PopFromQueue();
if( ent )
ProcessEntry( *ent );
else
wxMilliSleep( 100 );
}
return nullptr;
}
};
FOOTPRINT_PREVIEW_PANEL::FOOTPRINT_PREVIEW_PANEL( KIWAY* aKiway, wxWindow* aParent,
std::unique_ptr<KIGFX::GAL_DISPLAY_OPTIONS> aOpts, GAL_TYPE aGalType )
: PCB_DRAW_PANEL_GAL( aParent, -1, wxPoint( 0, 0 ), wxSize( 200, 200 ), *aOpts, aGalType ),
KIWAY_HOLDER( aKiway, KIWAY_HOLDER::PANEL ),
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m_displayOptions( std::move( aOpts ) ),
m_currentModule( nullptr ),
m_footprintDisplayed( true )
{
m_iface = std::make_shared<FP_THREAD_IFACE>();
m_iface->SetPanel( this );
m_loader = new FP_LOADER_THREAD( m_iface );
m_loader->Run();
SetStealsFocus( false );
ShowScrollbars( wxSHOW_SB_NEVER, wxSHOW_SB_NEVER );
EnableScrolling( false, false ); // otherwise Zoom Auto disables GAL canvas
m_dummyBoard = std::make_unique<BOARD>();
UpdateColors();
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SyncLayersVisibility( m_dummyBoard.get() );
Raise();
Show( true );
StartDrawing();
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Connect( wxEVT_COMMAND_TEXT_UPDATED,
wxCommandEventHandler( FOOTPRINT_PREVIEW_PANEL::OnLoaderThreadUpdate ), NULL, this );
}
FOOTPRINT_PREVIEW_PANEL::~FOOTPRINT_PREVIEW_PANEL( )
{
if( m_currentModule )
{
GetView()->Remove( m_currentModule.get() );
GetView()->Clear();
m_currentModule->SetParent( nullptr );
}
m_iface->SetPanel( nullptr );
}
FOOTPRINT_PREVIEW_PANEL::CACHE_ENTRY FOOTPRINT_PREVIEW_PANEL::CacheAndReturn( const LIB_ID& aFPID )
{
auto opt_ent = m_iface->GetFromCache( aFPID );
if( opt_ent )
return *opt_ent;
else
return m_iface->AddToQueue( aFPID );
}
// This is separate to avoid having to export CACHE_ENTRY to the global namespace
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void FOOTPRINT_PREVIEW_PANEL::CacheFootprint( const LIB_ID& aFPID )
{
(void) CacheAndReturn( aFPID );
}
void FOOTPRINT_PREVIEW_PANEL::renderFootprint( std::shared_ptr<MODULE> aModule )
{
if( m_currentModule )
{
GetView()->Remove( m_currentModule.get() );
GetView()->Clear();
m_currentModule->SetParent( nullptr );
}
aModule->SetParent( m_dummyBoard.get() );
GetView()->Add( aModule.get() );
GetView()->SetVisible( aModule.get(), true );
GetView()->Update( aModule.get(), KIGFX::ALL );
// Save a reference to the module's shared pointer to say we are using it in the
// preview panel
m_currentModule = aModule;
BOX2I bbox = aModule->ViewBBox();
bbox.Merge( aModule->Value().ViewBBox() );
bbox.Merge( aModule->Reference().ViewBBox() );
if( bbox.GetSize().x > 0 && bbox.GetSize().y > 0 )
{
// Autozoom
GetView()->SetViewport( BOX2D( bbox.GetOrigin(), bbox.GetSize() ) );
// Add a margin
GetView()->SetScale( GetView()->GetScale() * 0.7 );
Refresh();
}
}
void FOOTPRINT_PREVIEW_PANEL::DisplayFootprint ( const LIB_ID& aFPID )
{
m_currentFPID = aFPID;
m_iface->SetCurrentFootprint( aFPID );
m_footprintDisplayed = false;
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CACHE_ENTRY fpe = CacheAndReturn( m_currentFPID );
if( m_handler )
m_handler( fpe.status );
if( fpe.status == FPS_READY )
{
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if( !m_footprintDisplayed )
{
renderFootprint( fpe.module );
m_footprintDisplayed = true;
Refresh();
}
}
}
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void FOOTPRINT_PREVIEW_PANEL::OnLoaderThreadUpdate( wxCommandEvent& aEvent )
{
DisplayFootprint( m_currentFPID );
}
void FOOTPRINT_PREVIEW_PANEL::SetStatusHandler( FOOTPRINT_STATUS_HANDLER aHandler )
{
m_handler = aHandler;
}
wxWindow* FOOTPRINT_PREVIEW_PANEL::GetWindow()
{
return static_cast<wxWindow*>( this );
}
FOOTPRINT_PREVIEW_PANEL* FOOTPRINT_PREVIEW_PANEL::New( KIWAY* aKiway, wxWindow* aParent )
{
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PCB_EDIT_FRAME* pcbnew =
static_cast<PCB_EDIT_FRAME*>( aKiway->Player( FRAME_PCB_EDITOR, false ) );
PCBNEW_SETTINGS* cfg = Pgm().GetSettingsManager().GetAppSettings<PCBNEW_SETTINGS>();
// Fetch grid & display settings from PCBNew if it's running; otherwise fetch them
// from PCBNew's config settings.
// We need a copy with a lifetime that matches the panel
std::unique_ptr<KIGFX::GAL_DISPLAY_OPTIONS> gal_opts;
if( pcbnew )
{
// Copy the existing Pcbnew options
// REVIEW: This also copies the current subscription list of the options
// to the new options. This is probably not what is intended, but because
// this widget doesn't change the options it should be OK.
gal_opts = std::make_unique<KIGFX::GAL_DISPLAY_OPTIONS>( pcbnew->GetGalDisplayOptions() );
}
else
{
// Make and populate a new one from config
gal_opts = std::make_unique<KIGFX::GAL_DISPLAY_OPTIONS>();
gal_opts->ReadConfig( *Pgm().GetCommonSettings(), cfg->m_Window, aParent );
}
auto canvasType = static_cast<EDA_DRAW_PANEL_GAL::GAL_TYPE>( cfg->m_Graphics.canvas_type );
auto panel = new FOOTPRINT_PREVIEW_PANEL( aKiway, aParent, std::move( gal_opts ), canvasType );
if( pcbnew )
{
panel->GetGAL()->SetGridVisibility( pcbnew->IsGridVisible() );
panel->GetGAL()->SetGridSize( VECTOR2D( pcbnew->GetScreen()->GetGridSize() ) );
// Grid color (among other things):
KIGFX::PAINTER* pcbnew_painter = pcbnew->GetCanvas()->GetView()->GetPainter();
panel->GetView()->GetPainter()->ApplySettings( pcbnew_painter->GetSettings() );
}
else
{
panel->GetGAL()->SetGridVisibility( cfg->m_Window.grid.show );
// Read grid size:
std::unique_ptr<PCB_SCREEN> temp_screen = std::make_unique<PCB_SCREEN>( wxSize() );
temp_screen->SetGrid( ID_POPUP_GRID_LEVEL_1000 + cfg->m_Window.grid.last_size );
panel->GetGAL()->SetGridSize( VECTOR2D( temp_screen->GetGridSize() ) );
}
return panel;
}