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kicad/common/draw_panel_gal.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2013-2015 CERN
* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
* @author Maciej Suminski <maciej.suminski@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 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 <wx/wx.h>
#include <wx/frame.h>
#include <wx/window.h>
#include <wx/event.h>
#include <wx/colour.h>
#include <wx/filename.h>
#include <confirm.h>
#include <class_draw_panel_gal.h>
#include <view/view.h>
#include <view/wx_view_controls.h>
#include <pcb_painter.h>
#include <gal/graphics_abstraction_layer.h>
#include <gal/opengl/opengl_gal.h>
#include <gal/cairo/cairo_gal.h>
#include <tool/tool_dispatcher.h>
#include <tool/tool_manager.h>
#include <boost/foreach.hpp>
#ifdef __WXDEBUG__
#include <profile.h>
#endif /* __WXDEBUG__ */
EDA_DRAW_PANEL_GAL::EDA_DRAW_PANEL_GAL( wxWindow* aParentWindow, wxWindowID aWindowId,
const wxPoint& aPosition, const wxSize& aSize,
GAL_TYPE aGalType ) :
wxScrolledCanvas( aParentWindow, aWindowId, aPosition, aSize )
{
m_parent = aParentWindow;
m_gal = NULL;
m_backend = GAL_TYPE_NONE;
m_view = NULL;
m_painter = NULL;
m_eventDispatcher = NULL;
m_lostFocus = false;
SwitchBackend( aGalType );
SetBackgroundStyle( wxBG_STYLE_CUSTOM );
ShowScrollbars( wxSHOW_SB_ALWAYS, wxSHOW_SB_ALWAYS );
EnableScrolling( false, false ); // otherwise Zoom Auto disables GAL canvas
m_painter = new KIGFX::PCB_PAINTER( m_gal );
m_view = new KIGFX::VIEW( true );
m_view->SetPainter( m_painter );
m_view->SetGAL( m_gal );
Connect( wxEVT_SIZE, wxSizeEventHandler( EDA_DRAW_PANEL_GAL::onSize ), NULL, this );
Connect( wxEVT_ENTER_WINDOW, wxEventHandler( EDA_DRAW_PANEL_GAL::onEnter ), NULL, this );
Connect( wxEVT_KILL_FOCUS, wxFocusEventHandler( EDA_DRAW_PANEL_GAL::onLostFocus ), NULL, this );
const wxEventType events[] =
{
wxEVT_LEFT_UP, wxEVT_LEFT_DOWN, wxEVT_LEFT_DCLICK,
wxEVT_RIGHT_UP, wxEVT_RIGHT_DOWN, wxEVT_RIGHT_DCLICK,
wxEVT_MIDDLE_UP, wxEVT_MIDDLE_DOWN, wxEVT_MIDDLE_DCLICK,
wxEVT_MOTION, wxEVT_MOUSEWHEEL, wxEVT_CHAR,
#if wxCHECK_VERSION( 3, 1, 0 ) || defined( USE_OSX_MAGNIFY_EVENT )
wxEVT_MAGNIFY,
#endif
KIGFX::WX_VIEW_CONTROLS::EVT_REFRESH_MOUSE
};
BOOST_FOREACH( wxEventType eventType, events )
{
Connect( eventType, wxEventHandler( EDA_DRAW_PANEL_GAL::onEvent ),
NULL, m_eventDispatcher );
}
// 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 );
// Set up timer that prevents too frequent redraw commands
m_refreshTimer.SetOwner( this );
m_pendingRefresh = false;
m_drawing = false;
m_drawingEnabled = false;
Connect( wxEVT_TIMER, wxTimerEventHandler( EDA_DRAW_PANEL_GAL::onRefreshTimer ), NULL, this );
}
EDA_DRAW_PANEL_GAL::~EDA_DRAW_PANEL_GAL()
{
delete m_painter;
delete m_viewControls;
delete m_view;
delete m_gal;
}
void EDA_DRAW_PANEL_GAL::SetFocus()
{
// Windows has a strange manner on bringing up and activating windows
// containing a GAL canvas just after moving the mouse cursor into its area.
// Feel free to uncomment or extend the following #ifdef if you experience
// similar problems on your platform.
#ifdef __WINDOWS__
if( !GetParent()->IsDescendant( wxWindow::FindFocus() ) )
return;
#endif
wxScrolledCanvas::SetFocus();
m_lostFocus = false;
}
void EDA_DRAW_PANEL_GAL::onPaint( wxPaintEvent& WXUNUSED( aEvent ) )
{
m_pendingRefresh = false;
if( m_drawing )
return;
m_drawing = true;
m_viewControls->UpdateScrollbars();
m_view->UpdateItems();
m_gal->BeginDrawing();
m_gal->ClearScreen( m_painter->GetSettings()->GetBackgroundColor() );
KIGFX::COLOR4D gridColor = static_cast<KIGFX::PCB_RENDER_SETTINGS*> (m_painter->GetSettings())->GetLayerColor( ITEM_GAL_LAYER ( GRID_VISIBLE ) );
m_gal->SetGridColor ( gridColor );
if( m_view->IsDirty() )
{
m_view->ClearTargets();
// Grid has to be redrawn only when the NONCACHED target is redrawn
if( m_view->IsTargetDirty( KIGFX::TARGET_NONCACHED ) )
m_gal->DrawGrid();
m_view->Redraw();
}
m_gal->DrawCursor( m_viewControls->GetCursorPosition() );
m_gal->EndDrawing();
m_lastRefresh = wxGetLocalTimeMillis();
m_drawing = false;
}
void EDA_DRAW_PANEL_GAL::onSize( wxSizeEvent& aEvent )
{
m_gal->ResizeScreen( aEvent.GetSize().x, aEvent.GetSize().y );
m_view->MarkTargetDirty( KIGFX::TARGET_CACHED );
m_view->MarkTargetDirty( KIGFX::TARGET_NONCACHED );
}
void EDA_DRAW_PANEL_GAL::Refresh( bool aEraseBackground, const wxRect* aRect )
{
if( m_pendingRefresh )
return;
wxLongLong t = wxGetLocalTimeMillis();
wxLongLong delta = t - m_lastRefresh;
if( delta >= MinRefreshPeriod )
{
ForceRefresh();
m_pendingRefresh = true;
}
else
{
// One shot timer
m_refreshTimer.Start( ( MinRefreshPeriod - delta ).ToLong(), true );
m_pendingRefresh = true;
}
}
void EDA_DRAW_PANEL_GAL::ForceRefresh()
{
wxPaintEvent redrawEvent;
wxPostEvent( this, redrawEvent );
}
void EDA_DRAW_PANEL_GAL::SetEventDispatcher( TOOL_DISPATCHER* aEventDispatcher )
{
m_eventDispatcher = aEventDispatcher;
const wxEventType eventTypes[] = { wxEVT_TOOL };
if( m_eventDispatcher )
{
BOOST_FOREACH( wxEventType type, eventTypes )
{
m_parent->Connect( type, wxCommandEventHandler( TOOL_DISPATCHER::DispatchWxCommand ),
NULL, m_eventDispatcher );
}
}
else
{
BOOST_FOREACH( wxEventType type, eventTypes )
{
// While loop is used to be sure that all event handlers are removed.
while( m_parent->Disconnect( type,
wxCommandEventHandler( TOOL_DISPATCHER::DispatchWxCommand ),
NULL, m_eventDispatcher ) );
}
}
}
void EDA_DRAW_PANEL_GAL::StartDrawing()
{
// Start querying GAL if it is ready
m_refreshTimer.StartOnce( 100 );
}
void EDA_DRAW_PANEL_GAL::StopDrawing()
{
m_drawingEnabled = false;
Disconnect( wxEVT_PAINT, wxPaintEventHandler( EDA_DRAW_PANEL_GAL::onPaint ), NULL, this );
m_pendingRefresh = false;
m_drawing = true;
m_refreshTimer.Stop();
}
void EDA_DRAW_PANEL_GAL::SetHighContrastLayer( LAYER_ID aLayer )
{
// Set display settings for high contrast mode
KIGFX::RENDER_SETTINGS* rSettings = m_view->GetPainter()->GetSettings();
SetTopLayer( aLayer );
rSettings->ClearActiveLayers();
rSettings->SetActiveLayer( aLayer );
m_view->UpdateAllLayersColor();
}
void EDA_DRAW_PANEL_GAL::SetTopLayer( LAYER_ID aLayer )
{
m_view->ClearTopLayers();
m_view->SetTopLayer( aLayer );
m_view->UpdateAllLayersOrder();
}
double EDA_DRAW_PANEL_GAL::GetLegacyZoom() const
{
double zoomFactor = m_gal->GetWorldScale() / m_gal->GetZoomFactor();
return ( 1.0 / ( zoomFactor * m_view->GetScale() ) );
}
bool EDA_DRAW_PANEL_GAL::SwitchBackend( GAL_TYPE aGalType )
{
// Do not do anything if the currently used GAL is correct
if( aGalType == m_backend && m_gal != NULL )
return true;
bool result = true; // assume everything will be fine
// Prevent refreshing canvas during backend switch
StopDrawing();
KIGFX::GAL* new_gal = NULL;
try
{
switch( aGalType )
{
case GAL_TYPE_OPENGL:
new_gal = new KIGFX::OPENGL_GAL( this, this, this );
break;
case GAL_TYPE_CAIRO:
new_gal = new KIGFX::CAIRO_GAL( this, this, this );
break;
default:
assert( false );
// warn about unhandled GAL canvas type, but continue with the fallback option
case GAL_TYPE_NONE:
// KIGFX::GAL is a stub - it actually does cannot display anything,
// but prevents code relying on GAL canvas existence from crashing
new_gal = new KIGFX::GAL();
break;
}
}
catch( std::runtime_error& err )
{
new_gal = new KIGFX::GAL();
aGalType = GAL_TYPE_NONE;
DisplayError( m_parent, wxString( err.what() ) );
result = false;
}
assert( new_gal );
delete m_gal;
m_gal = new_gal;
wxSize size = GetClientSize();
m_gal->ResizeScreen( size.GetX(), size.GetY() );
if( m_painter )
m_painter->SetGAL( m_gal );
if( m_view )
m_view->SetGAL( m_gal );
m_backend = aGalType;
return result;
}
void EDA_DRAW_PANEL_GAL::onEvent( wxEvent& aEvent )
{
if( m_lostFocus )
SetFocus();
if( !m_eventDispatcher )
aEvent.Skip();
else
m_eventDispatcher->DispatchWxEvent( aEvent );
Refresh();
}
void EDA_DRAW_PANEL_GAL::onEnter( wxEvent& aEvent )
{
// Getting focus is necessary in order to receive key events properly
SetFocus();
aEvent.Skip();
}
void EDA_DRAW_PANEL_GAL::onLostFocus( wxFocusEvent& aEvent )
{
m_lostFocus = true;
aEvent.Skip();
}
void EDA_DRAW_PANEL_GAL::onRefreshTimer( wxTimerEvent& aEvent )
{
if( !m_drawingEnabled )
{
if( m_gal->IsInitialized() )
{
m_drawing = false;
m_pendingRefresh = true;
Connect( wxEVT_PAINT, wxPaintEventHandler( EDA_DRAW_PANEL_GAL::onPaint ), NULL, this );
m_drawingEnabled = true;
}
else
{
// Try again soon
m_refreshTimer.Start( 100, true );
return;
}
}
wxPaintEvent redrawEvent;
wxPostEvent( this, redrawEvent );
}
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