KiCad PCB EDA Suite
draw_panel_gal.cpp
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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 <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 __WXDEBUG__
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;
60  m_eventDispatcher = NULL;
61  m_lostFocus = false;
62  m_stealsFocus = true;
63 
64 #ifdef __WXMAC__
65  m_defaultCursor = m_currentCursor = wxCURSOR_CROSS;
66 #else
67  m_defaultCursor = m_currentCursor = wxCURSOR_ARROW;
68 #endif
69 
70  SetLayoutDirection( wxLayout_LeftToRight );
71 
72  SwitchBackend( aGalType );
73  SetBackgroundStyle( wxBG_STYLE_CUSTOM );
74 
75  ShowScrollbars( wxSHOW_SB_ALWAYS, wxSHOW_SB_ALWAYS );
76  EnableScrolling( false, false ); // otherwise Zoom Auto disables GAL canvas
77 
78  Connect( wxEVT_SIZE, wxSizeEventHandler( EDA_DRAW_PANEL_GAL::onSize ), NULL, this );
79  Connect( wxEVT_ENTER_WINDOW, wxEventHandler( EDA_DRAW_PANEL_GAL::onEnter ), NULL, this );
80  Connect( wxEVT_KILL_FOCUS, wxFocusEventHandler( EDA_DRAW_PANEL_GAL::onLostFocus ), NULL, this );
81 
82  const wxEventType events[] =
83  {
84  // Binding both EVT_CHAR and EVT_CHAR_HOOK ensures that all key events,
85  // especially special key like arrow keys, are handled by the GAL event dispatcher,
86  // and not sent to GUI without filtering, because they have a default action (scroll)
87  // that must not be called.
88  wxEVT_LEFT_UP, wxEVT_LEFT_DOWN, wxEVT_LEFT_DCLICK,
89  wxEVT_RIGHT_UP, wxEVT_RIGHT_DOWN, wxEVT_RIGHT_DCLICK,
90  wxEVT_MIDDLE_UP, wxEVT_MIDDLE_DOWN, wxEVT_MIDDLE_DCLICK,
91  wxEVT_MOTION, wxEVT_MOUSEWHEEL, wxEVT_CHAR, wxEVT_CHAR_HOOK,
92 #if wxCHECK_VERSION( 3, 1, 0 ) || defined( USE_OSX_MAGNIFY_EVENT )
93  wxEVT_MAGNIFY,
94 #endif
96  };
97 
98  for( wxEventType eventType : events )
99  {
100  Connect( eventType, wxEventHandler( EDA_DRAW_PANEL_GAL::OnEvent ),
101  NULL, m_eventDispatcher );
102  }
103 
104  m_pendingRefresh = false;
105  m_drawing = false;
106  m_drawingEnabled = false;
107 
108  // Set up timer that prevents too frequent redraw commands
109  m_refreshTimer.SetOwner( this );
110  Connect( m_refreshTimer.GetId(), wxEVT_TIMER,
111  wxTimerEventHandler( EDA_DRAW_PANEL_GAL::onRefreshTimer ), NULL, this );
112 
113  // Set up timer to execute OnShow() method when the window appears on the screen
114  m_onShowTimer.SetOwner( this );
115  Connect( m_onShowTimer.GetId(), wxEVT_TIMER,
116  wxTimerEventHandler( EDA_DRAW_PANEL_GAL::onShowTimer ), NULL, this );
117  m_onShowTimer.Start( 10 );
118 }
119 
120 
122 {
123  StopDrawing();
124 
125  wxASSERT( !m_drawing );
126 
127  delete m_viewControls;
128  delete m_view;
129  delete m_gal;
130 }
131 
132 
134 {
135 // Windows has a strange manner on bringing up and activating windows
136 // containing a GAL canvas just after moving the mouse cursor into its area.
137 // Feel free to uncomment or extend the following #ifdef if you experience
138 // similar problems on your platform.
139 #ifdef __WINDOWS__
140  if( !GetParent()->IsDescendant( wxWindow::FindFocus() ) )
141  return;
142 #endif
143 
144  wxScrolledCanvas::SetFocus();
145  m_lostFocus = false;
146 }
147 
148 
149 void EDA_DRAW_PANEL_GAL::onPaint( wxPaintEvent& WXUNUSED( aEvent ) )
150 {
152 
153  // Update current zoom settings if the canvas is managed by a EDA frame
154  // (i.e. not by a preview panel in a dialog)
155  if( GetParentEDAFrame() && GetParentEDAFrame()->GetScreen() )
156  {
158 
159  VECTOR2D center = GetView()->GetCenter();
160  GetParentEDAFrame()->SetScrollCenterPosition( wxPoint( center.x, center.y ) );
161  }
162 
163  if( !m_gal->IsVisible() )
164  return;
165 
166  m_pendingRefresh = false;
167 
168  if( m_drawing )
169  return;
170 
171 #ifdef __WXDEBUG__
172  PROF_COUNTER totalRealTime;
173 #endif /* PROFILE */
174 
175  wxASSERT( m_painter );
176 
177  m_drawing = true;
178  KIGFX::RENDER_SETTINGS* settings = static_cast<KIGFX::RENDER_SETTINGS*>( m_painter->GetSettings() );
179 
180  try
181  {
182  m_view->UpdateItems();
183 
185 
186  m_gal->SetClearColor( settings->GetBackgroundColor() );
187  m_gal->SetGridColor( settings->GetGridColor() );
188  m_gal->SetCursorColor( settings->GetCursorColor() );
189 
190  // TODO: find why ClearScreen() must be called here in opengl mode
191  // and only if m_view->IsDirty() in Cairo mode to avoid distaly artifacts
192  // when moving the mouse cursor
193  if( m_backend == GAL_TYPE_OPENGL )
194  m_gal->ClearScreen();
195 
196  if( m_view->IsDirty() )
197  {
198  if( m_backend != GAL_TYPE_OPENGL && // Already called in opengl
200  m_gal->ClearScreen();
201 
202  m_view->ClearTargets();
203 
204  // Grid has to be redrawn only when the NONCACHED target is redrawn
206  m_gal->DrawGrid();
207 
208  m_view->Redraw();
209  }
210 
212  }
213  catch( std::runtime_error& err )
214  {
215  constexpr auto GAL_FALLBACK = GAL_TYPE_CAIRO;
216 
217  if( m_edaFrame )
218  {
219  bool use_gal = m_edaFrame->SwitchCanvas( GAL_FALLBACK );
220  m_edaFrame->UseGalCanvas( use_gal );
221  }
222  else
223  {
225  }
226 
227  DisplayError( m_parent, wxString( err.what() ) );
228  }
229 
230 #ifdef __WXDEBUG__
231  totalRealTime.Stop();
232  wxLogTrace( "GAL_PROFILE", "EDA_DRAW_PANEL_GAL::onPaint(): %.1f ms", totalRealTime.msecs() );
233 #endif /* PROFILE */
234 
235  m_lastRefresh = wxGetLocalTimeMillis();
236  m_drawing = false;
237 }
238 
239 
240 void EDA_DRAW_PANEL_GAL::onSize( wxSizeEvent& aEvent )
241 {
243  wxSize clientSize = GetClientSize();
244  m_gal->ResizeScreen( clientSize.x, clientSize.y );
245 
246  if( m_view )
247  {
250  }
251 }
252 
253 
254 void EDA_DRAW_PANEL_GAL::Refresh( bool aEraseBackground, const wxRect* aRect )
255 {
256  if( m_pendingRefresh )
257  return;
258 
259  m_pendingRefresh = true;
260 
261 #ifdef __WXMAC__
262  // Timers on OS X may have a high latency (seen up to 500ms and more) which
263  // makes repaints jerky. No negative impact seen without throttling, so just
264  // do an unconditional refresh for OS X.
265  ForceRefresh();
266 #else
267  wxLongLong t = wxGetLocalTimeMillis();
268  wxLongLong delta = t - m_lastRefresh;
269 
270  if( delta >= MinRefreshPeriod )
271  {
272  ForceRefresh();
273  }
274  else
275  {
276  // One shot timer
277  m_refreshTimer.Start( ( MinRefreshPeriod - delta ).ToLong(), true );
278  }
279 #endif
280 }
281 
282 
284 {
285  wxPaintEvent redrawEvent;
286  wxPostEvent( this, redrawEvent );
287 }
288 
289 
291 {
292  m_eventDispatcher = aEventDispatcher;
293  const wxEventType eventTypes[] = { wxEVT_TOOL };
294 
295  if( m_eventDispatcher )
296  {
297  for( wxEventType type : eventTypes )
298  {
299  m_parent->Connect( type, wxCommandEventHandler( TOOL_DISPATCHER::DispatchWxCommand ),
300  NULL, m_eventDispatcher );
301  }
302  }
303  else
304  {
305  for( wxEventType type : eventTypes )
306  {
307  // While loop is used to be sure that all event handlers are removed.
308  while( m_parent->Disconnect( type,
309  wxCommandEventHandler( TOOL_DISPATCHER::DispatchWxCommand ),
310  NULL, m_eventDispatcher ) );
311  }
312  }
313 }
314 
315 
317 {
318  // Start querying GAL if it is ready
319  m_refreshTimer.StartOnce( 100 );
320 }
321 
322 
324 {
325  m_drawingEnabled = false;
326  Disconnect( wxEVT_PAINT, wxPaintEventHandler( EDA_DRAW_PANEL_GAL::onPaint ), NULL, this );
327  m_pendingRefresh = false;
328  m_refreshTimer.Stop();
329 }
330 
331 
333 {
334  // Set display settings for high contrast mode
336 
337  SetTopLayer( aLayer );
338 
339  rSettings->ClearActiveLayers();
340  rSettings->SetActiveLayer( aLayer );
341 
343 }
344 
345 
347 {
349  m_view->SetTopLayer( aLayer );
351 }
352 
353 
355 {
357 }
358 
359 
361 {
362  // Do not do anything if the currently used GAL is correct
363  if( aGalType == m_backend && m_gal != NULL )
364  return true;
365 
366  bool result = true; // assume everything will be fine
367 
368  // Prevent refreshing canvas during backend switch
369  StopDrawing();
370 
371  KIGFX::GAL* new_gal = NULL;
372 
373  try
374  {
375  switch( aGalType )
376  {
377  case GAL_TYPE_OPENGL:
378  new_gal = new KIGFX::OPENGL_GAL( m_options, this, this, this );
379  break;
380 
381  case GAL_TYPE_CAIRO:
382  new_gal = new KIGFX::CAIRO_GAL( m_options, this, this, this );
383  break;
384 
385  default:
386  wxASSERT( false );
387  // warn about unhandled GAL canvas type, but continue with the fallback option
388 
389  case GAL_TYPE_NONE:
390  // KIGFX::GAL is a stub - it actually does cannot display anything,
391  // but prevents code relying on GAL canvas existence from crashing
392  new_gal = new KIGFX::GAL( m_options );
393  break;
394  }
395  }
396  catch( std::runtime_error& err )
397  {
398  // Create a dummy GAL
399  new_gal = new KIGFX::GAL( m_options );
400  aGalType = GAL_TYPE_NONE;
401  DisplayError( m_parent, wxString( err.what() ) );
402  result = false;
403  }
404 
405  // trigger update of the gal options in case they differ
406  // from the defaults
408 
409  wxASSERT( new_gal );
410  delete m_gal;
411  m_gal = new_gal;
412 
413  wxSize size = GetClientSize();
414  m_gal->ResizeScreen( size.GetX(), size.GetY() );
415 
416  if( m_painter )
417  m_painter->SetGAL( m_gal );
418 
419  if( m_view )
420  {
421  m_view->SetGAL( m_gal );
422  // Note: OpenGL requires reverse draw order when draw priority is enabled
423  m_view->ReverseDrawOrder( aGalType == GAL_TYPE_OPENGL );
424  }
425 
426  m_backend = aGalType;
427 
428  return result;
429 }
430 
431 
432 void EDA_DRAW_PANEL_GAL::OnEvent( wxEvent& aEvent )
433 {
434  if( m_lostFocus && m_stealsFocus )
435  SetFocus();
436 
437  if( !m_eventDispatcher )
438  aEvent.Skip();
439  else
441 
442  Refresh();
443 }
444 
445 
446 void EDA_DRAW_PANEL_GAL::onEnter( wxEvent& aEvent )
447 {
448  // Getting focus is necessary in order to receive key events properly
449  if( m_stealsFocus )
450  SetFocus();
451 
452  aEvent.Skip();
453 }
454 
455 
456 void EDA_DRAW_PANEL_GAL::onLostFocus( wxFocusEvent& aEvent )
457 {
458  m_lostFocus = true;
459 
460  aEvent.Skip();
461 }
462 
463 
464 void EDA_DRAW_PANEL_GAL::onRefreshTimer( wxTimerEvent& aEvent )
465 {
466  if( !m_drawingEnabled )
467  {
468  if( m_gal && m_gal->IsInitialized() )
469  {
470  m_drawing = false;
471  m_pendingRefresh = true;
472  Connect( wxEVT_PAINT, wxPaintEventHandler( EDA_DRAW_PANEL_GAL::onPaint ), NULL, this );
473  m_drawingEnabled = true;
474  }
475  else
476  {
477  // Try again soon
478  m_refreshTimer.StartOnce( 100 );
479  return;
480  }
481  }
482 
483  wxPaintEvent redrawEvent;
484  wxPostEvent( this, redrawEvent );
485 }
486 
487 
488 void EDA_DRAW_PANEL_GAL::onShowTimer( wxTimerEvent& aEvent )
489 {
490  if( m_gal && m_gal->IsVisible() )
491  {
492  m_onShowTimer.Stop();
493  OnShow();
494  }
495 }
497 {
498  if ( aCursor > wxCURSOR_NONE && aCursor < wxCURSOR_MAX )
499  {
500  m_currentCursor = aCursor;
501  }
502  else
503  {
504  m_currentCursor = wxCURSOR_ARROW;
505  }
506 
507  SetCursor( (wxStockCursor) m_currentCursor );
508 }
509 
511 {
513 }
void Stop()
save the time when this function was called, and set the counter stane to stop
Definition: profile.h:82
bool m_pendingRefresh
Is there a redraw event requested?
wxTimer m_refreshTimer
Timer responsible for preventing too frequent refresh.
KIGFX::GAL * m_gal
Interface for drawing objects on a 2D-surface.
const VECTOR2D & GetCenter() const
Function GetCenter() Returns the center point of this VIEW (in world space coordinates) ...
Definition: view.h:339
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:686
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:848
Class RENDER_SETTINGS Contains all the knowledge about how graphical objects are drawn on any output ...
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 GetLegacyZoom() const
Function GetLegacyZoom() Returns current view scale converted to zoom value used by the legacy canvas...
virtual bool SwitchBackend(GAL_TYPE aGalType)
Function SwitchBackend Switches method of rendering graphics.
EDA_DRAW_FRAME * GetParentEDAFrame() const
Function GetParentEDAFrame() Returns parent EDA_DRAW_FRAME, if available or NULL otherwise.
void SetScrollCenterPosition(const wxPoint &aPoint)
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)
int m_currentCursor
Current mouse cursor shape id.
virtual bool IsVisible() const
Returns true if the GAL canvas is visible on the screen.
void UpdateAllLayersOrder()
Function UpdateLayerOrder() Does everything that is needed to apply the rendering order of layers...
Definition: view.cpp:915
KIGFX::VIEW * GetView() const
Function GetView() Returns a pointer to the VIEW instance used in the panel.
void onShowTimer(wxTimerEvent &aEvent)
The base class for create windows for drawing purpose.
Definition: draw_frame.h:78
bool IsDirty() const
Function IsDirty() Returns true if any of the VIEW layers needs to be refreshened.
Definition: view.h:568
virtual bool IsInitialized() const
Returns the initalization status for the canvas.
The class PROF_COUNTER is a small class to help profiling.
Definition: profile.h:45
int m_defaultCursor
The default mouse cursor shape id.
virtual void UseGalCanvas(bool aEnable)
Use to switch between standard and GAL-based canvas.
static const int delta[8][2]
Definition: solve.cpp:112
WX_VIEW_CONTROLS class definition.
double GetZoomLevelCoeff() const
Return the coefficient to convert internal display scale factor to zoom level.
Definition: draw_frame.h:464
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:42
void onRefreshTimer(wxTimerEvent &aEvent)
void UpdateScrollbars()
Adjusts the scrollbars position to match the current viewport.
bool m_drawing
True if GAL is currently redrawing the view.
void SetGridColor(const COLOR4D &aGridColor)
Set the grid color.
wxWindow * m_parent
Pointer to the parent window.
virtual BASE_SCREEN * GetScreen() const
Return a pointer to a BASE_SCREEN or one of its derivatives.
Definition: draw_frame.h:397
virtual void onPaint(wxPaintEvent &WXUNUSED(aEvent))
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:1133
void MarkTargetDirty(int aTarget)
Function MarkTargetDirty() Sets or clears target &#39;dirty&#39; flag.
Definition: view.h:596
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...
virtual void SetTopLayer(int aLayer)
Function SetTopLayer Moves the selected layer to the top, so it is displayed above all others...
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:585
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 void SetFocus() override
virtual bool SwitchCanvas(EDA_DRAW_PANEL_GAL::GAL_TYPE aCanvasType)
Changes the current rendering backend.
void UpdateItems()
Function UpdateItems() Iterates through the list of items that asked for updating and updates them...
Definition: view.cpp:1402
virtual bool SetZoom(double iu_per_du)
Function SetZoom adjusts the current zoom factor.
EDA_DRAW_FRAME * m_edaFrame
Parent EDA_DRAW_FRAME (if available)
PAINTER * GetPainter() const
Function GetPainter() Returns the painter object used by the view for drawing VIEW_ITEMS.
Definition: view.h:199
void SetCursorColor(const COLOR4D &aCursorColor)
Set the cursor color.
virtual void SetCurrentCursor(int aCursor)
Function SetCurrentCursor Set the current cursor shape for this panel.
string & err
Definition: json11.cpp:598
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:900
Class TOOL_DISPATCHER.
virtual void DrawGrid()
>
virtual void ClearScreen()
Clear the screen.
TOOL_DISPATCHER * m_eventDispatcher
Processes and forwards events to tools.
double msecs() const
Definition: profile.h:124
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:41
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...
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.
void ClearTargets()
Function ClearTargets() Clears targets that are marked as dirty.
Definition: view.cpp:1114
double GetZoomFactor() const
Get the zoom factor.
wxLongLong m_lastRefresh
Last timestamp when the panel was refreshed.
void onEnter(wxEvent &aEvent)
void UpdateAllLayersColor()
Function UpdateAllLayersColor() Applies the new coloring scheme to all layers.
Definition: view.cpp:786
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:508
void DisplayError(wxWindow *parent, const wxString &text, int displaytime)
Function DisplayError displays an error or warning message box with aMessage.
Definition: confirm.cpp:245
virtual void SetDefaultCursor()
void StopDrawing()
Function StopDrawing() Prevents the GAL canvas from further drawing till it is recreated or StartDraw...
Class GAL is the abstract interface for drawing on a 2D-surface.