KiCad PCB EDA Suite
draw_panel_gal.cpp
Go to the documentation of this file.
1 /*
2  * This program source code file is part of KiCad, a free EDA CAD application.
3  *
4  * Copyright (C) 2013-2017 CERN
5  * Copyright (C) 2013-2017 KiCad Developers, see AUTHORS.txt for contributors.
6  * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
7  * @author Maciej Suminski <maciej.suminski@cern.ch>
8  *
9  * This program is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU General Public License
11  * as published by the Free Software Foundation; either version 2
12  * of the License, or (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, you may find one here:
21  * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
22  * or you may search the http://www.gnu.org website for the version 2 license,
23  * or you may write to the Free Software Foundation, Inc.,
24  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
25  */
26 
27 #include <eda_draw_frame.h>
28 #include <kiface_i.h>
29 #include <confirm.h>
30 
31 #include <class_draw_panel_gal.h>
32 #include <view/view.h>
33 #include <view/wx_view_controls.h>
34 #include <painter.h>
35 #include <base_screen.h>
37 #include <gal/opengl/opengl_gal.h>
38 #include <gal/cairo/cairo_gal.h>
39 
40 #include <tool/tool_dispatcher.h>
41 #include <tool/tool_manager.h>
42 
43 #ifdef PROFILE
44 #include <profile.h>
45 #endif /* PROFILE */
46 
47 
48 EDA_DRAW_PANEL_GAL::EDA_DRAW_PANEL_GAL( wxWindow* aParentWindow, wxWindowID aWindowId,
49  const wxPoint& aPosition, const wxSize& aSize,
50  KIGFX::GAL_DISPLAY_OPTIONS& aOptions, GAL_TYPE aGalType ) :
51  wxScrolledCanvas( aParentWindow, aWindowId, aPosition, aSize ),
52  m_options( aOptions )
53 {
54  m_parent = aParentWindow;
55  m_edaFrame = dynamic_cast<EDA_DRAW_FRAME*>( aParentWindow );
56  m_gal = NULL;
58  m_view = NULL;
59  m_painter = NULL;
61  m_lostFocus = false;
62  m_stealsFocus = true;
63 
64  m_currentCursor = wxStockCursor( wxCURSOR_ARROW );
65 
66  SetLayoutDirection( wxLayout_LeftToRight );
67 
68  SwitchBackend( aGalType );
69  SetBackgroundStyle( wxBG_STYLE_CUSTOM );
70 
71  ShowScrollbars( wxSHOW_SB_ALWAYS, wxSHOW_SB_ALWAYS );
72  EnableScrolling( false, false ); // otherwise Zoom Auto disables GAL canvas
73 
74  Connect( wxEVT_SIZE, wxSizeEventHandler( EDA_DRAW_PANEL_GAL::onSize ), NULL, this );
75  Connect( wxEVT_ENTER_WINDOW, wxEventHandler( EDA_DRAW_PANEL_GAL::onEnter ), NULL, this );
76  Connect( wxEVT_KILL_FOCUS, wxFocusEventHandler( EDA_DRAW_PANEL_GAL::onLostFocus ), NULL, this );
77  Connect( wxEVT_SET_CURSOR, wxSetCursorEventHandler( EDA_DRAW_PANEL_GAL::onSetCursor ), NULL, this );
78 
79  const wxEventType events[] =
80  {
81  // Binding both EVT_CHAR and EVT_CHAR_HOOK ensures that all key events,
82  // especially special key like arrow keys, are handled by the GAL event dispatcher,
83  // and not sent to GUI without filtering, because they have a default action (scroll)
84  // that must not be called.
85  wxEVT_LEFT_UP, wxEVT_LEFT_DOWN, wxEVT_LEFT_DCLICK,
86  wxEVT_RIGHT_UP, wxEVT_RIGHT_DOWN, wxEVT_RIGHT_DCLICK,
87  wxEVT_MIDDLE_UP, wxEVT_MIDDLE_DOWN, wxEVT_MIDDLE_DCLICK,
88  wxEVT_MOTION, wxEVT_MOUSEWHEEL, wxEVT_CHAR, wxEVT_CHAR_HOOK,
89 #if wxCHECK_VERSION( 3, 1, 0 ) || defined( USE_OSX_MAGNIFY_EVENT )
90  wxEVT_MAGNIFY,
91 #endif
93  };
94 
95  for( wxEventType eventType : events )
96  Connect( eventType, wxEventHandler( EDA_DRAW_PANEL_GAL::OnEvent ), NULL, m_eventDispatcher );
97 
98  m_pendingRefresh = false;
99  m_drawing = false;
100  m_drawingEnabled = false;
101 
102  // Set up timer that prevents too frequent redraw commands
103  m_refreshTimer.SetOwner( this );
104  Connect( m_refreshTimer.GetId(), wxEVT_TIMER,
105  wxTimerEventHandler( EDA_DRAW_PANEL_GAL::onRefreshTimer ), NULL, this );
106 
107  // Set up timer to execute OnShow() method when the window appears on the screen
108  m_onShowTimer.SetOwner( this );
109  Connect( m_onShowTimer.GetId(), wxEVT_TIMER,
110  wxTimerEventHandler( EDA_DRAW_PANEL_GAL::onShowTimer ), NULL, this );
111  m_onShowTimer.Start( 10 );
112 }
113 
114 
116 {
117  StopDrawing();
118 
119  wxASSERT( !m_drawing );
120 
121  delete m_viewControls;
122  delete m_view;
123  delete m_gal;
124 }
125 
126 
128 {
129 // Windows has a strange manner on bringing up and activating windows
130 // containing a GAL canvas just after moving the mouse cursor into its area.
131 // Feel free to uncomment or extend the following #ifdef if you experience
132 // similar problems on your platform.
133 #ifdef __WINDOWS__
134  if( !GetParent()->IsDescendant( wxWindow::FindFocus() ) )
135  return;
136 #endif
137 
138  wxScrolledCanvas::SetFocus();
139  m_lostFocus = false;
140 }
141 
142 
143 void EDA_DRAW_PANEL_GAL::onPaint( wxPaintEvent& WXUNUSED( aEvent ) )
144 {
145  // Update current zoom settings if the canvas is managed by a EDA frame
146  // (i.e. not by a preview panel in a dialog)
147  if( GetParentEDAFrame() && GetParentEDAFrame()->GetScreen() )
148  {
151  }
152 
154 
155  if( !m_gal->IsVisible() )
156  return;
157 
158  m_pendingRefresh = false;
159 
160  if( m_drawing )
161  return;
162 
163 #ifdef PROFILE
164  PROF_COUNTER totalRealTime;
165 #endif /* PROFILE */
166 
167  wxASSERT( m_painter );
168 
169  m_drawing = true;
170  KIGFX::RENDER_SETTINGS* settings = static_cast<KIGFX::RENDER_SETTINGS*>( m_painter->GetSettings() );
171 
172  try
173  {
174  m_view->UpdateItems();
175 
177 
178  m_gal->SetClearColor( settings->GetBackgroundColor() );
179  m_gal->SetGridColor( settings->GetGridColor() );
180  m_gal->SetCursorColor( settings->GetCursorColor() );
181 
182  // TODO: find why ClearScreen() must be called here in opengl mode
183  // and only if m_view->IsDirty() in Cairo mode to avoid distaly artifacts
184  // when moving the mouse cursor
185  if( m_backend == GAL_TYPE_OPENGL )
186  m_gal->ClearScreen();
187 
188  if( m_view->IsDirty() )
189  {
190  if( m_backend != GAL_TYPE_OPENGL && // Already called in opengl
192  m_gal->ClearScreen();
193 
194  m_view->ClearTargets();
195 
196  // Grid has to be redrawn only when the NONCACHED target is redrawn
198  m_gal->DrawGrid();
199 
200  m_view->Redraw();
201  }
202 
204  }
205  catch( std::runtime_error& err )
206  {
207  constexpr auto GAL_FALLBACK = GAL_TYPE_CAIRO;
208 
209  SwitchBackend( GAL_FALLBACK );
210 
212  _( "Could not use OpenGL, falling back to software rendering" ),
213  wxString( err.what() ) );
214  }
215 
216 #ifdef PROFILE
217  totalRealTime.Stop();
218  wxLogTrace( "GAL_PROFILE", "EDA_DRAW_PANEL_GAL::onPaint(): %.1f ms", totalRealTime.msecs() );
219 #endif /* PROFILE */
220 
221  m_lastRefresh = wxGetLocalTimeMillis();
222  m_drawing = false;
223 }
224 
225 
226 void EDA_DRAW_PANEL_GAL::onSize( wxSizeEvent& aEvent )
227 {
229  wxSize clientSize = GetClientSize();
230  m_gal->ResizeScreen( clientSize.x, clientSize.y );
231 
232  if( m_view )
233  {
236  }
237 }
238 
239 
240 void EDA_DRAW_PANEL_GAL::Refresh( bool aEraseBackground, const wxRect* aRect )
241 {
242  if( m_pendingRefresh )
243  return;
244 
245  m_pendingRefresh = true;
246 
247 #ifdef __WXMAC__
248  // Timers on OS X may have a high latency (seen up to 500ms and more) which
249  // makes repaints jerky. No negative impact seen without throttling, so just
250  // do an unconditional refresh for OS X.
251  ForceRefresh();
252 #else
253  wxLongLong t = wxGetLocalTimeMillis();
254  wxLongLong delta = t - m_lastRefresh;
255 
256  if( delta >= MinRefreshPeriod )
257  {
258  ForceRefresh();
259  }
260  else
261  {
262  // One shot timer
263  m_refreshTimer.Start( ( MinRefreshPeriod - delta ).ToLong(), true );
264  }
265 #endif
266 }
267 
268 
270 {
271  wxPaintEvent redrawEvent;
272  wxPostEvent( this, redrawEvent );
273 }
274 
275 
277 {
278  m_eventDispatcher = aEventDispatcher;
279  const wxEventType eventTypes[] = { wxEVT_TOOL };
280 
281  if( m_eventDispatcher )
282  {
283  for( wxEventType type : eventTypes )
284  {
285  m_parent->Connect( type, wxCommandEventHandler( TOOL_DISPATCHER::DispatchWxCommand ),
287  }
288  }
289  else
290  {
291  for( wxEventType type : eventTypes )
292  {
293  // While loop is used to be sure that all event handlers are removed.
294  while( m_parent->Disconnect( type,
295  wxCommandEventHandler( TOOL_DISPATCHER::DispatchWxCommand ),
296  NULL, m_eventDispatcher ) );
297  }
298  }
299 }
300 
301 
303 {
304  // Start querying GAL if it is ready
305  m_refreshTimer.StartOnce( 100 );
306 }
307 
308 
310 {
311  m_drawingEnabled = false;
312  Disconnect( wxEVT_PAINT, wxPaintEventHandler( EDA_DRAW_PANEL_GAL::onPaint ), NULL, this );
313  m_pendingRefresh = false;
314  m_refreshTimer.Stop();
315 }
316 
317 
319 {
320  // Set display settings for high contrast mode
322 
323  SetTopLayer( aLayer );
324 
325  rSettings->ClearActiveLayers();
326  rSettings->SetActiveLayer( aLayer );
327 
329 }
330 
331 
333 {
335  m_view->SetTopLayer( aLayer );
337 }
338 
339 
341 {
343 }
344 
345 
347 {
348  // Do not do anything if the currently used GAL is correct
349  if( aGalType == m_backend && m_gal != NULL )
350  return true;
351 
352  bool result = true; // assume everything will be fine
353 
354  // Prevent refreshing canvas during backend switch
355  StopDrawing();
356 
357  KIGFX::GAL* new_gal = NULL;
358 
359  try
360  {
361  switch( aGalType )
362  {
363  case GAL_TYPE_OPENGL:
364  try
365  {
366  new_gal = new KIGFX::OPENGL_GAL( m_options, this, this, this );
367  break;
368  }
369  catch( std::runtime_error& err )
370  {
371  aGalType = GAL_TYPE_CAIRO;
373  _( "Could not use OpenGL, falling back to software rendering" ),
374  wxString( err.what() ) );
375  }
376 
377  new_gal = new KIGFX::CAIRO_GAL( m_options, this, this, this );
378  break;
379 
380  case GAL_TYPE_CAIRO:
381  new_gal = new KIGFX::CAIRO_GAL( m_options, this, this, this );
382  break;
383 
384  default:
385  wxASSERT( false );
386  // warn about unhandled GAL canvas type, but continue with the fallback option
387 
388  case GAL_TYPE_NONE:
389  // KIGFX::GAL is a stub - it actually does cannot display anything,
390  // but prevents code relying on GAL canvas existence from crashing
391  new_gal = new KIGFX::GAL( m_options );
392  break;
393  }
394  }
395  catch( std::runtime_error& err )
396  {
397  // Create a dummy GAL
398  new_gal = new KIGFX::GAL( m_options );
399  aGalType = GAL_TYPE_NONE;
400  DisplayError( m_parent, wxString( err.what() ) );
401  result = false;
402  }
403 
404  // trigger update of the gal options in case they differ
405  // from the defaults
407 
408  wxWindow* galWindow = dynamic_cast<wxWindow*>( new_gal );
409 
410  if( galWindow )
411  galWindow->Connect( wxEVT_SET_CURSOR, wxSetCursorEventHandler( EDA_DRAW_PANEL_GAL::onSetCursor ), NULL, this );
412 
413  delete m_gal;
414  m_gal = new_gal;
415 
416  wxSize size = GetClientSize();
417  m_gal->ResizeScreen( size.GetX(), size.GetY() );
418 
419  if( m_painter )
420  m_painter->SetGAL( m_gal );
421 
422  if( m_view )
423  {
424  m_view->SetGAL( m_gal );
425  // Note: OpenGL requires reverse draw order when draw priority is enabled
426  m_view->ReverseDrawOrder( aGalType == GAL_TYPE_OPENGL );
427  }
428 
429  m_backend = aGalType;
430 
431  return result;
432 }
433 
434 
435 void EDA_DRAW_PANEL_GAL::OnEvent( wxEvent& aEvent )
436 {
437  if( m_lostFocus && m_stealsFocus )
438  SetFocus();
439 
440  if( !m_eventDispatcher )
441  aEvent.Skip();
442  else
444 
445  Refresh();
446 }
447 
448 
449 void EDA_DRAW_PANEL_GAL::onEnter( wxEvent& aEvent )
450 {
451  // Getting focus is necessary in order to receive key events properly
452  if( m_stealsFocus )
453  SetFocus();
454 
455  aEvent.Skip();
456 }
457 
458 
459 void EDA_DRAW_PANEL_GAL::onLostFocus( wxFocusEvent& aEvent )
460 {
461  m_lostFocus = true;
462 
463  aEvent.Skip();
464 }
465 
466 
467 void EDA_DRAW_PANEL_GAL::onRefreshTimer( wxTimerEvent& aEvent )
468 {
469  if( !m_drawingEnabled )
470  {
471  if( m_gal && m_gal->IsInitialized() )
472  {
473  m_drawing = false;
474  m_pendingRefresh = true;
475  Connect( wxEVT_PAINT, wxPaintEventHandler( EDA_DRAW_PANEL_GAL::onPaint ), NULL, this );
476  m_drawingEnabled = true;
477  }
478  else
479  {
480  // Try again soon
481  m_refreshTimer.StartOnce( 100 );
482  return;
483  }
484  }
485 
486  wxPaintEvent redrawEvent;
487  wxPostEvent( this, redrawEvent );
488 }
489 
490 
491 void EDA_DRAW_PANEL_GAL::onShowTimer( wxTimerEvent& aEvent )
492 {
493  if( m_gal && m_gal->IsVisible() )
494  {
495  m_onShowTimer.Stop();
496  OnShow();
497  }
498 }
499 
500 
501 void EDA_DRAW_PANEL_GAL::SetCurrentCursor( wxStockCursor aStockCursorID )
502 {
503  if ( aStockCursorID <= wxCURSOR_NONE || aStockCursorID >= wxCURSOR_MAX )
504  aStockCursorID = wxCURSOR_ARROW;
505 
506  SetCurrentCursor( wxCursor( aStockCursorID ) );
507 }
508 
509 
510 void EDA_DRAW_PANEL_GAL::SetCurrentCursor( const wxCursor& aCursor )
511 {
512  m_currentCursor = aCursor;
513  SetCursor( m_currentCursor );
514 }
515 
516 
517 void EDA_DRAW_PANEL_GAL::onSetCursor( wxSetCursorEvent& event )
518 {
519  event.SetCursor( m_currentCursor );
520 }
void DisplayError(wxWindow *aParent, const wxString &aText, int aDisplayTime)
Display an error or warning message box with aMessage.
Definition: confirm.cpp:236
void Stop()
save the time when this function was called, and set the counter stane to stop
Definition: profile.h:82
bool m_pendingRefresh
Last timestamp when the panel was refreshed.
wxTimer m_refreshTimer
Is there a redraw event requested?
KIGFX::GAL * m_gal
Interface for drawing objects on a 2D-surface.
void SetClearColor(const COLOR4D &aColor)
virtual void SetHighContrastLayer(int aLayer)
Function SetHighContrastLayer Takes care of display settings for the given layer to be displayed in h...
void ForceRefresh()
Function ForceRefresh() Forces a redraw.
virtual const COLOR4D & GetGridColor()=0
Function GetGridColor Returns current grid color settings.
KIGFX::WX_VIEW_CONTROLS * m_viewControls
Control for VIEW (moving, zooming, etc.)
void ReverseDrawOrder(bool aFlag)
Function ReverseDrawOrder() Only takes effect if UseDrawPriority is true.
Definition: view.h:675
GAL_TYPE m_backend
Currently used GAL.
virtual void SetTopLayer(int aLayer, bool aEnabled=true)
Function SetTopLayer() Sets given layer to be displayed on the top or sets back the default order of ...
Definition: view.cpp:860
RENDER_SETTINGS Contains all the knowledge about how graphical objects are drawn on any output surfac...
Definition: painter.h:56
static const wxEventType EVT_REFRESH_MOUSE
Event that forces mouse move event in the dispatcher (eg.
This file is part of the common library.
void OnEvent(wxEvent &aEvent)
Used to forward events to the canvas from popups, etc.
virtual const COLOR4D & GetCursorColor()=0
Function GetCursorColor Returns current cursor color settings.
virtual const COLOR4D & GetBackgroundColor()=0
Function GetBackgroundColor Returns current background color settings.
double msecs(bool aSinceLast=false)
Definition: profile.h:143
const VECTOR2D & GetCenter() const
Function GetCenter() Returns the center point of this VIEW (in world space coordinates)
Definition: view.h:328
void SetCurrentCursor(wxStockCursor aStockCursorID)
Function SetCurrentCursor Set the current cursor shape for this panel.
virtual bool SwitchBackend(GAL_TYPE aGalType)
Function SwitchBackend Switches method of rendering graphics.
KIGFX::GAL_DISPLAY_OPTIONS & m_options
virtual void OnShow()
Function OnShow() Called when the window is shown for the first time.
Class OpenGL_GAL is the OpenGL implementation of the Graphics Abstraction Layer.
Definition: opengl_gal.h:65
void onLostFocus(wxFocusEvent &aEvent)
void UpdateAllLayersOrder()
Function UpdateLayerOrder() Does everything that is needed to apply the rendering order of layers.
Definition: view.cpp:927
void onShowTimer(wxTimerEvent &aEvent)
The class PROF_COUNTER is a small class to help profiling.
Definition: profile.h:44
PAINTER * GetPainter() const
Function GetPainter() Returns the painter object used by the view for drawing VIEW_ITEMS.
Definition: view.h:199
WX_VIEW_CONTROLS class definition.
void SetActiveLayer(int aLayerId, bool aEnabled=true)
Function SetActiveLayer Sets the specified layer as active - it means that it can be drawn in a speci...
Definition: painter.h:76
Auxiliary rendering target (noncached)
Definition: definitions.h:49
void onRefreshTimer(wxTimerEvent &aEvent)
void UpdateScrollbars()
Adjusts the scrollbars position to match the current viewport.
bool m_drawing
Timer to prevent too-frequent refreshing.
void SetGridColor(const COLOR4D &aGridColor)
Set the grid color.
wxWindow * m_parent
Current mouse cursor shape id.
virtual void onPaint(wxPaintEvent &WXUNUSED(aEvent))
double GetZoomLevelCoeff() const
Return the coefficient to convert internal display scale factor to zoom level.
#define NULL
void ClearActiveLayers()
Function ClearActiveLayers Clears the list of active layers.
Definition: painter.h:98
virtual void Redraw()
Function Redraw() Immediately redraws the whole view.
Definition: view.cpp:1145
void MarkTargetDirty(int aTarget)
Function MarkTargetDirty() Sets or clears target 'dirty' flag.
Definition: view.h:585
bool IsTargetDirty(int aTarget) const
Function IsTargetDirty() Returns true if any of layers belonging to the target or the target itself s...
Definition: view.h:574
GAL not used (the legacy wxDC engine is used)
static const int MinRefreshPeriod
60 FPS.
std::unique_ptr< KIGFX::PAINTER > m_painter
Contains information about how to draw items using GAL.
virtual void DispatchWxEvent(wxEvent &aEvent)
Function DispatchWxEvent() Processes wxEvents (mostly UI events), translates them to TOOL_EVENTs,...
double GetLegacyZoom() const
Function GetLegacyZoom() Returns current view scale converted to zoom value used by the legacy canvas...
virtual void SetTopLayer(int aLayer)
Function SetTopLayer Moves the selected layer to the top, so it is displayed above all others.
virtual void DrawGrid()
virtual void DrawCursor(const VECTOR2D &aCursorPosition)
Draw the cursor.
EDA_DRAW_PANEL_GAL(wxWindow *aParentWindow, wxWindowID aWindowId, const wxPoint &aPosition, const wxSize &aSize, KIGFX::GAL_DISPLAY_OPTIONS &aOptions, GAL_TYPE aGalType=GAL_TYPE_OPENGL)
bool m_lostFocus
Flag to indicate that focus should be regained on the next mouse event.
virtual KIGFX::VIEW * GetView() const
Function GetView() Returns a pointer to the VIEW instance used in the panel.
double GetZoomFactor() const
Get the zoom factor.
virtual void SetFocus() override
void UpdateItems()
Function UpdateItems() Iterates through the list of items that asked for updating and updates them.
Definition: view.cpp:1421
virtual bool SetZoom(double iu_per_du)
Function SetZoom adjusts the current zoom factor.
Definition: base_screen.cpp:88
void onSetCursor(wxSetCursorEvent &event)
EDA_DRAW_FRAME * m_edaFrame
Pointer to the parent window.
void SetCursorColor(const COLOR4D &aCursorColor)
Set the cursor color.
virtual void ResizeScreen(int aWidth, int aHeight)
Resizes the canvas.
void onSize(wxSizeEvent &aEvent)
void StartDrawing()
Function StartDrawing() Begins drawing if it was stopped previously.
virtual void Refresh(bool aEraseBackground=true, const wxRect *aRect=NULL) override
Update the board display after modifying it by a python script (note: it is automatically called by a...
void ClearTopLayers()
Function ClearTopLayers() Removes all layers from the on-the-top set (they are no longer displayed ov...
Definition: view.cpp:912
TOOL_DISPATCHER.
virtual void ClearScreen()
Clear the screen.
TOOL_DISPATCHER * m_eventDispatcher
Processes and forwards events to tools.
virtual RENDER_SETTINGS * GetSettings()=0
Function GetSettings Returns pointer to current settings that are going to be used when drawing items...
wxTimer m_onShowTimer
Timer used to execute OnShow() when the window finally appears on the screen.
Main rendering target (cached)
Definition: definitions.h:48
KIGFX::VIEW * m_view
Stores view settings (scale, center, etc.) and items to be drawn.
virtual void DispatchWxCommand(wxCommandEvent &aEvent)
Function DispatchWxCommand() Processes wxCommands (mostly menu related events) and runs appropriate a...
void SetEventDispatcher(TOOL_DISPATCHER *aEventDispatcher)
Function SetEventDispatcher() Sets a dispatcher that processes events and forwards them to tools.
#define _(s)
Definition: 3d_actions.cpp:31
EDA_DRAW_FRAME * GetParentEDAFrame() const
Function GetParentEDAFrame() Returns parent EDA_DRAW_FRAME, if available or NULL otherwise.
bool m_drawingEnabled
Flag that determines if VIEW may use GAL for redrawing the screen.
VECTOR2D GetCursorPosition(bool aSnappingEnabled) const override
Returns the current cursor position in world coordinates.
virtual bool IsVisible() const
Returns true if the GAL canvas is visible on the screen.
void ClearTargets()
Function ClearTargets() Clears targets that are marked as dirty.
Definition: view.cpp:1126
wxLongLong m_lastRefresh
Parent EDA_DRAW_FRAME (if available)
VECTOR2D m_ScrollCenter
Current scroll center point in logical units.
Definition: base_screen.h:127
void onEnter(wxEvent &aEvent)
void UpdateAllLayersColor()
Function UpdateAllLayersColor() Applies the new coloring scheme to all layers.
Definition: view.cpp:798
bool m_stealsFocus
Flag to indicate whether the panel should take focus at certain times (when moused over,...
BASE_SCREEN class implementation.
void SetGAL(GAL *aGal)
Function SetGAL() Assigns a rendering device for the VIEW.
Definition: view.cpp:519
void DisplayInfoMessage(wxWindow *aParent, const wxString &aMessage, const wxString &aExtraInfo)
Display an informational message box with aMessage.
Definition: confirm.cpp:264
virtual BASE_SCREEN * GetScreen() const
Return a pointer to a BASE_SCREEN or one of its derivatives.
virtual bool IsInitialized() const
Returns the initalization status for the canvas.
void StopDrawing()
Function StopDrawing() Prevents the GAL canvas from further drawing till it is recreated or StartDraw...
bool IsDirty() const
Function IsDirty() Returns true if any of the VIEW layers needs to be refreshened.
Definition: view.h:557
Class GAL is the abstract interface for drawing on a 2D-surface.