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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) 2013-2021 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 <confirm.h>
#include <eda_draw_frame.h>
#include <kiface_i.h>
#include <macros.h>
#include <settings/app_settings.h>
#include <trace_helpers.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/cursors.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 <widgets/infobar.h>
#include <kiplatform/ui.h>
#ifdef PROFILE
#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_edaFrame( nullptr ),
m_gal( nullptr ),
m_view( nullptr ),
m_painter( nullptr ),
m_viewControls( nullptr ),
m_backend( GAL_TYPE_NONE ),
m_options( aOptions ),
m_eventDispatcher( nullptr ),
m_lostFocus( false ),
m_stealsFocus( true )
{
m_parent = aParentWindow;
SetLayoutDirection( wxLayout_LeftToRight );
m_edaFrame = dynamic_cast<EDA_DRAW_FRAME*>( m_parent );
// If we're in a dialog, we have to go looking for our parent frame
if( !m_edaFrame )
{
wxWindow* ancestor = aParentWindow->GetParent();
while( ancestor && !dynamic_cast<EDA_DRAW_FRAME*>( ancestor ) )
ancestor = ancestor->GetParent();
if( ancestor )
m_edaFrame = dynamic_cast<EDA_DRAW_FRAME*>( ancestor );
}
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, wxMouseEventHandler( 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()
{
wxScrolledCanvas::SetFocus();
m_lostFocus = false;
}
void EDA_DRAW_PANEL_GAL::onPaint( wxPaintEvent& WXUNUSED( aEvent ) )
{
DoRePaint();
}
void EDA_DRAW_PANEL_GAL::DoRePaint()
{
// Repaint the canvas, and fix scrollbar cursors
// Usually called by a OnPaint event, but because it does not use a wxPaintDC,
// it can be called outside a wxPaintEvent.
// Update current zoom settings if the canvas is managed by a EDA frame
// (i.e. not by a preview panel in a dialog)
if( !IsDialogPreview() && GetParentEDAFrame() && GetParentEDAFrame()->GetScreen() )
GetParentEDAFrame()->GetScreen()->m_ScrollCenter = GetView()->GetCenter();
m_viewControls->UpdateScrollbars();
if( !m_gal->IsVisible() )
return;
m_pendingRefresh = false;
if( m_drawing )
return;
#ifdef PROFILE
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_DRAWING_CONTEXT ctx( m_gal );
if( m_view->IsTargetDirty( KIGFX::TARGET_OVERLAY )
&& !m_gal->HasTarget( KIGFX::TARGET_OVERLAY ) )
{
m_view->MarkDirty();
}
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 display 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() );
}
catch( std::exception& err )
{
if( GAL_FALLBACK != m_backend )
{
SwitchBackend( GAL_FALLBACK );
DisplayInfoMessage( m_parent,
_( "Could not use OpenGL, falling back to software rendering" ),
wxString( err.what() ) );
}
else
{
// We're well and truly banjaxed if we get here without a fallback.
DisplayInfoMessage( m_parent, _( "Could not use OpenGL" ), wxString( err.what() ) );
}
}
#ifdef PROFILE
totalRealTime.Stop();
wxLogTrace( traceGalProfile, "EDA_DRAW_PANEL_GAL::DoRePaint(): %.1f ms",
totalRealTime.msecs() );
#endif /* PROFILE */
m_lastRefresh = wxGetLocalTimeMillis();
m_drawing = false;
}
void EDA_DRAW_PANEL_GAL::onSize( wxSizeEvent& aEvent )
{
// If we get a second wx update call before the first finishes, don't crash
if( m_gal->IsContextLocked() )
return;
KIGFX::GAL_CONTEXT_LOCKER locker( m_gal );
wxSize clientSize = GetClientSize();
WX_INFOBAR* infobar = GetParentEDAFrame() ? GetParentEDAFrame()->GetInfoBar() : nullptr;
if( VECTOR2I( clientSize ) == m_gal->GetScreenPixelSize() )
return;
clientSize.x = std::max( 10, clientSize.x );
clientSize.y = std::max( 10, clientSize.y );
VECTOR2D bottom( 0, 0 );
if( m_view )
bottom = m_view->ToWorld( m_gal->GetScreenPixelSize(), true );
m_gal->ResizeScreen( clientSize.GetX(), clientSize.GetY() );
if( m_view )
{
if( infobar && infobar->IsLocked() )
m_view->SetCenter( bottom - m_view->ToWorld( clientSize, false ) / 2.0 );
m_view->MarkTargetDirty( KIGFX::TARGET_CACHED );
m_view->MarkTargetDirty( KIGFX::TARGET_NONCACHED );
}
}
void EDA_DRAW_PANEL_GAL::Refresh( bool aEraseBackground, const wxRect* aRect )
{
wxLongLong t = wxGetLocalTimeMillis();
wxLongLong delta = t - m_lastRefresh;
// If it has been too long since the last frame (possible depending on platform timer latency),
// just do a refresh. Otherwise, start the refresh timer if it hasn't already been started.
// This ensures that we will render often enough but not too often.
if( delta >= MinRefreshPeriod )
{
if( !m_pendingRefresh )
ForceRefresh();
m_refreshTimer.Start( MinRefreshPeriod, true );
}
else if( !m_refreshTimer.IsRunning() )
{
m_refreshTimer.Start( ( MinRefreshPeriod - delta ).ToLong(), true );
}
}
void EDA_DRAW_PANEL_GAL::ForceRefresh()
{
m_pendingRefresh = true;
DoRePaint();
}
void EDA_DRAW_PANEL_GAL::SetEventDispatcher( TOOL_DISPATCHER* aEventDispatcher )
{
m_eventDispatcher = aEventDispatcher;
}
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->ClearHighContrastLayers();
rSettings->SetLayerIsHighContrast( aLayer );
m_view->UpdateAllLayersColor();
}
void EDA_DRAW_PANEL_GAL::SetTopLayer( int aLayer )
{
m_view->ClearTopLayers();
m_view->SetTopLayer( aLayer );
m_view->UpdateAllLayersOrder();
}
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;
VECTOR2D grid_size = m_gal ? m_gal->GetGridSize() : VECTOR2D();
bool grid_visibility = m_gal ? m_gal->GetGridVisibility() : 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:
{
wxString errormsg = KIGFX::OPENGL_GAL::CheckFeatures( m_options );
if( errormsg.empty() )
{
new_gal = new KIGFX::OPENGL_GAL( m_options, this, this, this );
}
else
{
if( GAL_FALLBACK != aGalType )
{
aGalType = GAL_FALLBACK;
DisplayInfoMessage(
m_parent,
_( "Could not use OpenGL, falling back to software rendering" ),
errormsg );
new_gal = new KIGFX::CAIRO_GAL( m_options, this, this, this );
}
else
{
// We're well and truly banjaxed if we get here without a fallback.
DisplayInfoMessage( m_parent, _( "Could not use OpenGL" ), errormsg );
}
}
break;
}
case GAL_TYPE_CAIRO: new_gal = new KIGFX::CAIRO_GAL( m_options, this, this, this ); break;
default:
wxASSERT( false );
KI_FALLTHROUGH;
// 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();
delete m_gal;
m_gal = new_gal;
wxSize clientSize = GetClientSize();
clientSize.x = std::max( 10, clientSize.x );
clientSize.y = std::max( 10, clientSize.y );
m_gal->ResizeScreen( clientSize.GetX(), clientSize.GetY() );
if( grid_size.x > 0 && grid_size.y > 0 )
m_gal->SetGridSize( grid_size );
m_gal->SetGridVisibility( grid_visibility );
// Make sure the cursor is set on the new canvas
SetCurrentCursor( KICURSOR::ARROW );
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 )
{
bool shouldSetFocus = m_lostFocus && m_stealsFocus
&& !KIUI::IsInputControlFocused() // Don't steal from input controls
&& !KIUI::IsModalDialogFocused() // Don't steal from dialogs
&& KIPLATFORM::UI::IsWindowActive( m_edaFrame ); // Don't steal from other windows
if( shouldSetFocus )
SetFocus();
if( !m_eventDispatcher )
aEvent.Skip();
else
m_eventDispatcher->DispatchWxEvent( aEvent );
Refresh();
}
void EDA_DRAW_PANEL_GAL::onEnter( wxMouseEvent& aEvent )
{
bool shouldSetFocus = m_stealsFocus
&& !KIUI::IsInputControlFocused() // Don't steal from input controls
&& !KIUI::IsModalDialogFocused() // Don't steal from dialogs
&& KIPLATFORM::UI::IsWindowActive( m_edaFrame ); // Don't steal from other windows
// Getting focus is necessary in order to receive key events properly
if( shouldSetFocus )
SetFocus();
aEvent.Skip();
}
void EDA_DRAW_PANEL_GAL::onLostFocus( wxFocusEvent& aEvent )
{
m_lostFocus = true;
m_viewControls->CancelDrag();
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;
}
}
DoRePaint();
}
void EDA_DRAW_PANEL_GAL::onShowTimer( wxTimerEvent& aEvent )
{
if( m_gal && m_gal->IsVisible() )
{
m_onShowTimer.Stop();
OnShow();
}
}
void EDA_DRAW_PANEL_GAL::SetCurrentCursor( KICURSOR aCursor )
{
if( m_gal )
m_gal->SetNativeCursorStyle( aCursor );
}
std::shared_ptr<KIGFX::VIEW_OVERLAY> EDA_DRAW_PANEL_GAL::DebugOverlay()
{
if( !m_debugOverlay )
{
m_debugOverlay.reset( new KIGFX::VIEW_OVERLAY() );
m_view->Add( m_debugOverlay.get() );
}
return m_debugOverlay;
}
void EDA_DRAW_PANEL_GAL::ClearDebugOverlay()
{
if( m_debugOverlay )
{
m_view->Remove( m_debugOverlay.get() );
m_debugOverlay = nullptr;
}
}
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