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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) 2013-2017 CERN
* Copyright (C) 2013-2017 KiCad Developers, see AUTHORS.txt for contributors.
* @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 <draw_frame.h>
#include <kiface_i.h>
#include <confirm.h>
#include <class_draw_panel_gal.h>
#include <view/view.h>
#include <view/wx_view_controls.h>
#include <painter.h>
#include <base_screen.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>
#ifdef __WXDEBUG__
#include <profile.h>
#endif /* PROFILE */
EDA_DRAW_PANEL_GAL::EDA_DRAW_PANEL_GAL( wxWindow* aParentWindow, wxWindowID aWindowId,
const wxPoint& aPosition, const wxSize& aSize,
KIGFX::GAL_DISPLAY_OPTIONS& aOptions, GAL_TYPE aGalType ) :
wxScrolledCanvas( aParentWindow, aWindowId, aPosition, aSize ),
m_options( aOptions )
{
m_parent = aParentWindow;
m_edaFrame = dynamic_cast<EDA_DRAW_FRAME*>( aParentWindow );
m_gal = NULL;
m_backend = GAL_TYPE_NONE;
m_view = NULL;
m_painter = NULL;
m_eventDispatcher = NULL;
m_lostFocus = false;
m_stealsFocus = true;
#ifdef __WXMAC__
m_defaultCursor = m_currentCursor = wxCURSOR_CROSS;
#else
m_defaultCursor = m_currentCursor = wxCURSOR_ARROW;
#endif
SetLayoutDirection( wxLayout_LeftToRight );
SwitchBackend( aGalType );
SetBackgroundStyle( wxBG_STYLE_CUSTOM );
ShowScrollbars( wxSHOW_SB_ALWAYS, wxSHOW_SB_ALWAYS );
EnableScrolling( false, false ); // otherwise Zoom Auto disables GAL canvas
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[] =
{
// Binding both EVT_CHAR and EVT_CHAR_HOOK ensures that all key events,
// especially special key like arrow keys, are handled by the GAL event dispatcher,
// and not sent to GUI without filtering, because they have a default action (scroll)
// that must not be called.
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, wxEVT_CHAR_HOOK,
#if wxCHECK_VERSION( 3, 1, 0 ) || defined( USE_OSX_MAGNIFY_EVENT )
wxEVT_MAGNIFY,
#endif
KIGFX::WX_VIEW_CONTROLS::EVT_REFRESH_MOUSE
};
for( wxEventType eventType : events )
{
Connect( eventType, wxEventHandler( EDA_DRAW_PANEL_GAL::OnEvent ),
NULL, m_eventDispatcher );
}
m_pendingRefresh = false;
m_drawing = false;
m_drawingEnabled = false;
// Set up timer that prevents too frequent redraw commands
m_refreshTimer.SetOwner( this );
Connect( m_refreshTimer.GetId(), wxEVT_TIMER,
wxTimerEventHandler( EDA_DRAW_PANEL_GAL::onRefreshTimer ), NULL, this );
// Set up timer to execute OnShow() method when the window appears on the screen
m_onShowTimer.SetOwner( this );
Connect( m_onShowTimer.GetId(), wxEVT_TIMER,
wxTimerEventHandler( EDA_DRAW_PANEL_GAL::onShowTimer ), NULL, this );
m_onShowTimer.Start( 10 );
}
EDA_DRAW_PANEL_GAL::~EDA_DRAW_PANEL_GAL()
{
StopDrawing();
wxASSERT( !m_drawing );
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_viewControls->UpdateScrollbars();
// Update current zoom settings if the canvas is managed by a EDA frame
// (i.e. not by a preview panel in a dialog)
if( GetParentEDAFrame() && GetParentEDAFrame()->GetScreen() )
{
GetParentEDAFrame()->GetScreen()->SetZoom( GetLegacyZoom() );
VECTOR2D center = GetView()->GetCenter();
GetParentEDAFrame()->SetScrollCenterPosition( wxPoint( center.x, center.y ) );
}
// Drawing to a zero-width or zero-height GAL is fraught with peril.
if( GetClientRect().IsEmpty() )
return;
m_pendingRefresh = false;
if( m_drawing )
return;
#ifdef __WXDEBUG__
PROF_COUNTER totalRealTime;
#endif /* PROFILE */
wxASSERT( m_painter );
m_drawing = true;
KIGFX::RENDER_SETTINGS* settings = static_cast<KIGFX::RENDER_SETTINGS*>( m_painter->GetSettings() );
try
{
m_view->UpdateItems();
KIGFX::GAL_CONTEXT_LOCKER locker( m_gal );
m_gal->BeginDrawing();
m_gal->SetClearColor( settings->GetBackgroundColor() );
m_gal->SetGridColor( settings->GetGridColor() );
m_gal->SetCursorColor( settings->GetCursorColor() );
// TODO: find why ClearScreen() must be called here in opengl mode
// and only if m_view->IsDirty() in Cairo mode to avoid distaly artifacts
// when moving the mouse cursor
if( m_backend == GAL_TYPE_OPENGL )
m_gal->ClearScreen();
if( m_view->IsDirty() )
{
if( m_backend != GAL_TYPE_OPENGL && // Already called in opengl
m_view->IsTargetDirty( KIGFX::TARGET_NONCACHED ) )
m_gal->ClearScreen();
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();
}
catch( std::runtime_error& err )
{
constexpr auto GAL_FALLBACK = GAL_TYPE_CAIRO;
if( m_edaFrame )
{
bool use_gal = m_edaFrame->SwitchCanvas( GAL_FALLBACK );
m_edaFrame->UseGalCanvas( use_gal );
}
else
{
SwitchBackend( GAL_TYPE_CAIRO );
}
DisplayError( m_parent, wxString( err.what() ) );
}
#ifdef __WXDEBUG__
totalRealTime.Stop();
wxLogTrace( "GAL_PROFILE", "EDA_DRAW_PANEL_GAL::onPaint(): %.1f ms", totalRealTime.msecs() );
#endif /* PROFILE */
m_lastRefresh = wxGetLocalTimeMillis();
m_drawing = false;
}
void EDA_DRAW_PANEL_GAL::onSize( wxSizeEvent& aEvent )
{
KIGFX::GAL_CONTEXT_LOCKER locker( m_gal );
wxSize clientSize = GetClientSize();
m_gal->ResizeScreen( clientSize.x, clientSize.y );
if( m_view )
{
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;
m_pendingRefresh = true;
#ifdef __WXMAC__
// Timers on OS X may have a high latency (seen up to 500ms and more) which
// makes repaints jerky. No negative impact seen without throttling, so just
// do an unconditional refresh for OS X.
ForceRefresh();
#else
wxLongLong t = wxGetLocalTimeMillis();
wxLongLong delta = t - m_lastRefresh;
if( delta >= MinRefreshPeriod )
{
ForceRefresh();
}
else
{
// One shot timer
m_refreshTimer.Start( ( MinRefreshPeriod - delta ).ToLong(), true );
}
#endif
}
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 )
{
for( wxEventType type : eventTypes )
{
m_parent->Connect( type, wxCommandEventHandler( TOOL_DISPATCHER::DispatchWxCommand ),
NULL, m_eventDispatcher );
}
}
else
{
for( 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_refreshTimer.Stop();
}
void EDA_DRAW_PANEL_GAL::SetHighContrastLayer( int 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( int 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( m_options, this, this, this );
break;
case GAL_TYPE_CAIRO:
new_gal = new KIGFX::CAIRO_GAL( m_options, this, this, this );
break;
default:
wxASSERT( 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( m_options );
break;
}
}
catch( std::runtime_error& err )
{
// Create a dummy GAL
new_gal = new KIGFX::GAL( m_options );
aGalType = GAL_TYPE_NONE;
DisplayError( m_parent, wxString( err.what() ) );
result = false;
}
// trigger update of the gal options in case they differ
// from the defaults
m_options.NotifyChanged();
wxASSERT( 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 );
// Note: OpenGL requires reverse draw order when draw priority is enabled
m_view->ReverseDrawOrder( aGalType == GAL_TYPE_OPENGL );
}
m_backend = aGalType;
return result;
}
void EDA_DRAW_PANEL_GAL::OnEvent( wxEvent& aEvent )
{
if( m_lostFocus && m_stealsFocus )
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
if( m_stealsFocus )
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 && 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.StartOnce( 100 );
return;
}
}
wxPaintEvent redrawEvent;
wxPostEvent( this, redrawEvent );
}
void EDA_DRAW_PANEL_GAL::onShowTimer( wxTimerEvent& aEvent )
{
if( m_gal && m_gal->IsVisible() )
{
m_onShowTimer.Stop();
OnShow();
}
}
void EDA_DRAW_PANEL_GAL::SetCurrentCursor( int aCursor )
{
if ( aCursor > wxCURSOR_NONE && aCursor < wxCURSOR_MAX )
{
m_currentCursor = aCursor;
}
else
{
m_currentCursor = wxCURSOR_ARROW;
}
SetCursor( (wxStockCursor) m_currentCursor );
}
void EDA_DRAW_PANEL_GAL::SetDefaultCursor()
{
SetCurrentCursor( m_defaultCursor );
}
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