KiCad PCB EDA Suite
view.h
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1 /*
2  * This program source code file is part of KiCad, a free EDA CAD application.
3  *
4  * Copyright (C) 2013-2016 CERN
5  * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License
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23  */
24 
25 #ifndef __VIEW_H
26 #define __VIEW_H
27 
28 #include <vector>
29 #include <set>
30 #include <unordered_map>
31 
32 #include <math/box2.h>
33 #include <gal/definitions.h>
34 
35 namespace KIGFX
36 {
37 class PAINTER;
38 class GAL;
39 class VIEW_ITEM;
40 class VIEW_GROUP;
41 class VIEW_RTREE;
42 
58 class VIEW
59 {
60 public:
61  friend class VIEW_ITEM;
62 
63  typedef std::pair<VIEW_ITEM*, int> LAYER_ITEM_PAIR;
64 
69  VIEW( bool aIsDynamic = true );
70 
71  virtual ~VIEW();
72 
73  // nasty hack, invoked by the destructor of VIEW_ITEM to auto-remove the item
74  // from the owning VIEW if there is any. Kicad relies too much on this mechanism.
75  // this is the only linking dependency now between EDA_ITEM and VIEW class. In near future
76  // I'll replace it with observers.
77  static void OnDestroy( VIEW_ITEM* aItem );
78 
86  virtual void Add( VIEW_ITEM* aItem, int aDrawPriority = -1 );
87 
93  virtual void Remove( VIEW_ITEM* aItem );
94 
95 
105  virtual int Query( const BOX2I& aRect, std::vector<LAYER_ITEM_PAIR>& aResult ) const;
106 
113  void SetVisible( VIEW_ITEM* aItem, bool aIsVisible = true );
114 
121  void Hide( VIEW_ITEM* aItem, bool aHide = true );
122 
130  bool IsVisible( const VIEW_ITEM* aItem ) const;
131 
139  virtual void Update( VIEW_ITEM* aItem, int aUpdateFlags );
140  virtual void Update( VIEW_ITEM* aItem );
141 
150  void SetRequired( int aLayerId, int aRequiredId, bool aRequired = true );
151 
157  void CopySettings( const VIEW* aOtherView );
158 
159  /*
160  * Convenience wrappers for adding multiple items
161  * template <class T> void AddItems( const T& aItems );
162  * template <class T> void RemoveItems( const T& aItems );
163  */
164 
170  void SetGAL( GAL* aGal );
171 
177  inline GAL* GetGAL() const
178  {
179  return m_gal;
180  }
181 
186  inline void SetPainter( PAINTER* aPainter )
187  {
188  m_painter = aPainter;
189  }
190 
196  inline PAINTER* GetPainter() const
197  {
198  return m_painter;
199  }
200 
206  void SetViewport( const BOX2D& aViewport );
207 
213  BOX2D GetViewport() const;
214 
221  void SetMirror( bool aMirrorX, bool aMirrorY );
222 
227  bool IsMirroredX() const
228  {
229  return m_mirrorX;
230  }
231 
236  bool IsMirroredY() const
237  {
238  return m_mirrorY;
239  }
240 
247  inline void SetScale( double aScale )
248  {
249  SetScale( aScale, m_center );
250  }
251 
259  void SetScale( double aScale, const VECTOR2D& aAnchor );
260 
265  inline double GetScale() const
266  {
267  return m_scale;
268  }
269 
275  inline void SetBoundary( const BOX2I& aBoundary )
276  {
277  m_boundary = aBoundary;
278  }
279 
284  inline const BOX2I& GetBoundary() const
285  {
286  return m_boundary;
287  }
288 
295  void SetScaleLimits( double aMaximum, double aMinimum )
296  {
297  wxASSERT_MSG( aMaximum > aMinimum, wxT( "I guess you passed parameters in wrong order" ) );
298 
299  m_minScale = aMinimum;
300  m_maxScale = aMaximum;
301  }
302 
309  void SetCenter( const VECTOR2D& aCenter );
310 
316  const VECTOR2D& GetCenter() const
317  {
318  return m_center;
319  }
320 
327  VECTOR2D ToWorld( const VECTOR2D& aCoord, bool aAbsolute = true ) const;
328 
335  double ToWorld( double aSize ) const;
336 
343  VECTOR2D ToScreen( const VECTOR2D& aCoord, bool aAbsolute = true ) const;
344 
350  double ToScreen( double aSize ) const;
351 
357  const VECTOR2I& GetScreenPixelSize() const;
358 
366  void AddLayer( int aLayer, bool aDisplayOnly = false );
367 
373  void ClearLayer( int aLayer );
374 
379  void Clear();
380 
387  inline void SetLayerVisible( int aLayer, bool aVisible = true )
388  {
389  wxASSERT( aLayer < (int) m_layers.size() );
390 
391  if( m_layers[aLayer].visible != aVisible )
392  {
393  // Target has to be redrawn after changing its visibility
394  MarkTargetDirty( m_layers[aLayer].target );
395  m_layers[aLayer].visible = aVisible;
396  }
397  }
398 
404  inline bool IsLayerVisible( int aLayer ) const
405  {
406  wxASSERT( aLayer < (int) m_layers.size() );
407 
408  return m_layers.at( aLayer ).visible;
409  }
410 
411  inline void SetLayerDisplayOnly( int aLayer, bool aDisplayOnly = true )
412  {
413  wxASSERT( aLayer < (int) m_layers.size() );
414 
415  m_layers[aLayer].displayOnly = aDisplayOnly;
416  }
417 
424  inline void SetLayerTarget( int aLayer, RENDER_TARGET aTarget )
425  {
426  wxASSERT( aLayer < (int) m_layers.size() );
427 
428  m_layers[aLayer].target = aTarget;
429  }
430 
437  void SetLayerOrder( int aLayer, int aRenderingOrder );
438 
445  int GetLayerOrder( int aLayer ) const;
446 
455  void SortLayers( int aLayers[], int& aCount ) const;
456 
463  void UpdateLayerColor( int aLayer );
464 
470  void UpdateAllLayersColor();
471 
479  virtual void SetTopLayer( int aLayer, bool aEnabled = true );
480 
488  virtual void EnableTopLayer( bool aEnable );
489 
490  virtual int GetTopLayer() const;
491 
497  void ClearTopLayers();
498 
504  void UpdateAllLayersOrder();
505 
510  void ClearTargets();
511 
516  virtual void Redraw();
517 
522  void RecacheAllItems();
523 
529  bool IsDynamic() const
530  {
531  return m_dynamic;
532  }
533 
539  bool IsDirty() const
540  {
541  for( int i = 0; i < TARGETS_NUMBER; ++i )
542  {
543  if( IsTargetDirty( i ) )
544  return true;
545  }
546 
547  return false;
548  }
549 
556  bool IsTargetDirty( int aTarget ) const
557  {
558  wxASSERT( aTarget < TARGETS_NUMBER );
559 
560  return m_dirtyTargets[aTarget];
561  }
562 
568  inline void MarkTargetDirty( int aTarget )
569  {
570  wxASSERT( aTarget < TARGETS_NUMBER );
571 
572  m_dirtyTargets[aTarget] = true;
573  }
574 
576  inline bool IsCached( int aLayer ) const
577  {
578  wxASSERT( aLayer < (int) m_layers.size() );
579 
580  try
581  {
582  return m_layers.at( aLayer ).target == TARGET_CACHED;
583  }
584  catch( std::out_of_range )
585  {
586  return false;
587  }
588  }
589 
594  void MarkDirty()
595  {
596  for( int i = 0; i < TARGETS_NUMBER; ++i )
597  m_dirtyTargets[i] = true;
598  }
599 
605  void MarkForUpdate( VIEW_ITEM* aItem );
606 
611  void UpdateItems();
612 
613  const BOX2I CalculateExtents() ;
614 
619  bool IsUsingDrawPriority() const
620  {
621  return m_useDrawPriority;
622  }
623 
628  void UseDrawPriority( bool aFlag )
629  {
630  m_useDrawPriority = aFlag;
631  }
632 
637  bool IsDrawOrderReversed() const
638  {
639  return m_reverseDrawOrder;
640  }
641 
647  void ReverseDrawOrder( bool aFlag )
648  {
649  m_reverseDrawOrder = aFlag;
650  }
651 
652  static const int VIEW_MAX_LAYERS = 512;
653 
654 
655 private:
656  struct VIEW_LAYER
657  {
658  bool visible;
659  bool displayOnly;
662  int id;
664  std::set<int> requiredLayers;
665  };
666 
667  // Convenience typedefs
668  typedef std::unordered_map<int, VIEW_LAYER> LAYER_MAP;
669  typedef LAYER_MAP::iterator LAYER_MAP_ITER;
670  typedef std::vector<VIEW_LAYER*> LAYER_ORDER;
671  typedef std::vector<VIEW_LAYER*>::iterator LAYER_ORDER_ITER;
672 
673  // Function objects that need to access VIEW/VIEW_ITEM private/protected members
674  struct clearLayerCache;
675  struct recacheItem;
676  struct drawItem;
677  struct unlinkItem;
678  struct updateItemsColor;
679  struct changeItemsDepth;
680  struct extentsVisitor;
681 
682 
684  void redrawRect( const BOX2I& aRect );
685 
686  inline void markTargetClean( int aTarget )
687  {
688  wxASSERT( aTarget < TARGETS_NUMBER );
689 
690  m_dirtyTargets[aTarget] = false;
691  }
692 
703  void draw( VIEW_ITEM* aItem, int aLayer, bool aImmediate = false );
704 
713  void draw( VIEW_ITEM* aItem, bool aImmediate = false );
714 
723  void draw( VIEW_GROUP* aGroup, bool aImmediate = false );
724 
726  void sortLayers();
727 
730  void clearGroupCache();
731 
738  void invalidateItem( VIEW_ITEM* aItem, int aUpdateFlags );
739 
741  void updateItemColor( VIEW_ITEM* aItem, int aLayer );
742 
744  void updateItemGeometry( VIEW_ITEM* aItem, int aLayer );
745 
747  void updateBbox( VIEW_ITEM* aItem );
748 
750  void updateLayers( VIEW_ITEM* aItem );
751 
754  {
755  return aI->renderingOrder > aJ->renderingOrder;
756  }
757 
759  bool areRequiredLayersEnabled( int aLayerId ) const;
760 
763 
765  LAYER_MAP m_layers;
766 
768  LAYER_ORDER m_orderedLayers;
769 
771  std::set<unsigned int> m_topLayers;
772 
775 
777  double m_scale;
778 
781 
783  double m_minScale;
784 
786  double m_maxScale;
787 
789  bool m_mirrorX;
790 
792  bool m_mirrorY;
793 
796 
799 
802  bool m_dynamic;
803 
806 
808  static const int TOP_LAYER_MODIFIER;
809 
811  std::vector<VIEW_ITEM*> m_allItems;
812 
815 
818 
821 };
822 } // namespace KIGFX
823 
824 #endif
void MarkForUpdate(VIEW_ITEM *aItem)
Function MarkForUpdate() Adds an item to a list of items that are going to be refreshed upon the next...
void SetScaleLimits(double aMaximum, double aMinimum)
Function SetScaleLimits() Sets minimum and maximum values for scale.
Definition: view.h:295
void Hide(VIEW_ITEM *aItem, bool aHide=true)
Temporarily hides the item in the view (e.g.
Definition: view.cpp:1352
Number of available rendering targets.
Definition: definitions.h:44
const VECTOR2D & GetCenter() const
Function GetCenter() Returns the center point of this VIEW (in world space coordinates) ...
Definition: view.h:316
virtual int GetTopLayer() const
Definition: view.cpp:721
void SetViewport(const BOX2D &aViewport)
Function SetViewport() Sets the visible area of the VIEW.
Definition: view.cpp:514
void updateLayers(VIEW_ITEM *aItem)
Updates set of layers that an item occupies.
Definition: view.cpp:1192
void AddLayer(int aLayer, bool aDisplayOnly=false)
Function AddLayer() Adds a new layer to the view.
Definition: view.cpp:295
void ReverseDrawOrder(bool aFlag)
Function ReverseDrawOrder() Only takes effect if UseDrawPriority is true.
Definition: view.h:647
void SetLayerOrder(int aLayer, int aRenderingOrder)
Function SetLayerOrder() Sets rendering order of a particular layer.
Definition: view.cpp:590
void SetRequired(int aLayerId, int aRequiredId, bool aRequired=true)
Function SetRequired() Marks the aRequiredId layer as required for the aLayerId layer.
Definition: view.cpp:382
void updateItemColor(VIEW_ITEM *aItem, int aLayer)
Updates colors that are used for an item to be drawn.
Definition: view.cpp:1127
bool m_useDrawPriority
Flag to respect draw priority when drawing items.
Definition: view.h:814
Class CAIRO_GAL is the cairo implementation of the graphics abstraction layer.
Definition: class_module.h:57
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:730
virtual int Query(const BOX2I &aRect, std::vector< LAYER_ITEM_PAIR > &aResult) const
Function Query() Finds all visible items that touch or are within the rectangle aRect.
Definition: view.cpp:418
static const int TOP_LAYER_MODIFIER
Rendering order modifier for layers that are marked as top layers.
Definition: view.h:808
bool IsLayerVisible(int aLayer) const
Function IsLayerVisible() Returns information about visibility of a particular layer.
Definition: view.h:404
void sortLayers()
Definition: view.cpp:1112
bool IsMirroredX() const
Function IsMirroredX() Returns true if view is flipped across the X axis.
Definition: view.h:227
const BOX2I & GetBoundary() const
Function GetBoundary()
Definition: view.h:284
VECTOR2D ToWorld(const VECTOR2D &aCoord, bool aAbsolute=true) const
Function ToWorld() Converts a screen space point/vector to a point/vector in world space coordinates...
Definition: view.cpp:441
void UseDrawPriority(bool aFlag)
Function UseDrawPriority()
Definition: view.h:628
void RecacheAllItems()
Function RecacheAllItems() Rebuilds GAL display lists.
Definition: view.cpp:1253
virtual void Remove(VIEW_ITEM *aItem)
Function Remove() Removes a VIEW_ITEM from the view.
Definition: view.cpp:342
GAL * m_gal
Gives interface to PAINTER, that is used to draw items.
Definition: view.h:798
std::set< unsigned int > m_topLayers
Stores set of layers that are displayed on the top.
Definition: view.h:771
bool IsMirroredY() const
Function IsMirroredX() Returns true if view is flipped across the Y axis.
Definition: view.h:236
void UpdateAllLayersOrder()
Function UpdateLayerOrder() Does everything that is needed to apply the rendering order of layers...
Definition: view.cpp:797
void SetMirror(bool aMirrorX, bool aMirrorY)
Function SetMirror() Controls the mirroring of the VIEW.
Definition: view.cpp:529
Class VIEW_ITEM - is an abstract base class for deriving all objects that can be added to a VIEW...
Definition: view_item.h:83
bool IsDirty() const
Function IsDirty() Returns true if any of the VIEW layers needs to be refreshened.
Definition: view.h:539
void SetScale(double aScale)
Function SetScale() Sets the scaling factor.
Definition: view.h:247
std::vector< VIEW_LAYER * > LAYER_ORDER
Definition: view.h:670
virtual void EnableTopLayer(bool aEnable)
Function EnableTopLayer() Enables or disables display of the top layer.
Definition: view.cpp:757
VECTOR2D m_center
Center point of the VIEW (the point at which we are looking at)
Definition: view.h:774
void SetBoundary(const BOX2I &aBoundary)
Function SetBoundary() Sets limits for view area.
Definition: view.h:275
double m_minScale
Scale lower limit.
Definition: view.h:783
void SetLayerTarget(int aLayer, RENDER_TARGET aTarget)
Function SetLayerTarget() Changes the rendering target for a particular layer.
Definition: view.h:424
void SortLayers(int aLayers[], int &aCount) const
Function SortLayers() Changes the order of given layer ids, so after sorting the order corresponds to...
Definition: view.cpp:604
Class PAINTER contains all the knowledge about how to draw graphical object onto any particular outpu...
Definition: painter.h:278
bool IsUsingDrawPriority() const
Function IsUsingDrawPriority()
Definition: view.h:619
BOX2I m_boundary
View boundaries.
Definition: view.h:780
void SetCenter(const VECTOR2D &aCenter)
Function SetCenter() Sets the center point of the VIEW (i.e.
Definition: view.cpp:565
BOX2D GetViewport() const
Function GetViewport() Returns the current viewport visible area rectangle.
Definition: view.cpp:502
virtual void Redraw()
Function Redraw() Immediately redraws the whole view.
Definition: view.cpp:1003
GAL * GetGAL() const
Function GetGAL() Returns the GAL this view is using to draw graphical primitives.
Definition: view.h:177
void MarkTargetDirty(int aTarget)
Function MarkTargetDirty() Sets or clears target 'dirty' flag.
Definition: view.h:568
void Clear()
Function Clear() Removes all items from the view.
Definition: view.cpp:969
int GetLayerOrder(int aLayer) const
Function GetLayerOrder() Returns rendering order of a particular layer.
Definition: view.cpp:598
bool visible
is the layer to be rendered?
Definition: view.h:658
const BOX2I CalculateExtents()
Definition: view.cpp:1316
void SetLayerDisplayOnly(int aLayer, bool aDisplayOnly=true)
Definition: view.h:411
std::unordered_map< int, VIEW_LAYER > LAYER_MAP
Definition: view.h:668
static const int VIEW_MAX_LAYERS
maximum number of layers that may be shown
Definition: view.h:652
bool m_mirrorX
Horizontal flip flag
Definition: view.h:789
void invalidateItem(VIEW_ITEM *aItem, int aUpdateFlags)
Function invalidateItem() Manages dirty flags & redraw queueing when updating an item.
Definition: view.cpp:1067
bool m_dynamic
Dynamic VIEW (eg.
Definition: view.h:802
Class VIEW_RTREE - Implements an R-tree for fast spatial indexing of VIEW items.
Definition: view_rtree.h:41
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:556
int id
layer ID
Definition: view.h:662
LAYER_ORDER m_orderedLayers
Sorted list of pointers to members of m_layers.
Definition: view.h:768
void SetLayerVisible(int aLayer, bool aVisible=true)
Function SetLayerVisible() Controls the visibility of a particular layer.
Definition: view.h:387
void UpdateItems()
Function UpdateItems() Iterates through the list of items that asked for updating and updates them...
Definition: view.cpp:1272
void markTargetClean(int aTarget)
Definition: view.h:686
void updateBbox(VIEW_ITEM *aItem)
Updates bounding box of an item.
Definition: view.cpp:1176
PAINTER * GetPainter() const
Function GetPainter() Returns the painter object used by the view for drawing VIEW_ITEMS.
Definition: view.h:196
PAINTER * m_painter
PAINTER contains information how do draw items.
Definition: view.h:795
bool m_reverseDrawOrder
Flag to reverse the draw order when using draw priority.
Definition: view.h:820
virtual void Update(VIEW_ITEM *aItem, int aUpdateFlags)
For dynamic VIEWs, informs the associated VIEW that the graphical representation of this item has cha...
Definition: view.cpp:1385
int m_nextDrawPriority
The next sequential drawing priority.
Definition: view.h:817
void ClearTopLayers()
Function ClearTopLayers() Removes all layers from the on-the-top set (they are no longer displayed ov...
Definition: view.cpp:782
LAYER_MAP::iterator LAYER_MAP_ITER
Definition: view.h:669
void clearGroupCache()
Definition: view.cpp:1052
double m_maxScale
Scale upper limit.
Definition: view.h:786
void UpdateLayerColor(int aLayer)
Function UpdateLayerColor() Applies the new coloring scheme held by RENDER_SETTINGS in case that it h...
Definition: view.cpp:657
bool m_dirtyTargets[TARGETS_NUMBER]
Flags to mark targets as dirty, so they have to be redrawn on the next refresh event.
Definition: view.h:805
void redrawRect(const BOX2I &aRect)
Definition: view.cpp:868
void updateItemGeometry(VIEW_ITEM *aItem, int aLayer)
Updates all informations needed to draw an item.
Definition: view.cpp:1146
Main rendering target (cached)
Definition: definitions.h:41
bool areRequiredLayersEnabled(int aLayerId) const
Checks if every layer required by the aLayerId layer is enabled.
Definition: view.cpp:1235
bool m_enableOrderModifier
Definition: view.h:762
static void OnDestroy(VIEW_ITEM *aItem)
Definition: view.cpp:247
std::vector< VIEW_ITEM * > m_allItems
Flat list of all items.
Definition: view.h:811
bool IsCached(int aLayer) const
Returns true if the layer is cached.
Definition: view.h:576
std::pair< VIEW_ITEM *, int > LAYER_ITEM_PAIR
Definition: view.h:63
void draw(VIEW_ITEM *aItem, int aLayer, bool aImmediate=false)
Function draw() Draws an item, but on a specified layers.
Definition: view.cpp:887
VECTOR2D ToScreen(const VECTOR2D &aCoord, bool aAbsolute=true) const
Function ToScreen() Converts a world space point/vector to a point/vector in screen space coordinates...
Definition: view.cpp:460
const VECTOR2I & GetScreenPixelSize() const
Function GetScreenPixelSize() Returns the size of the our rendering area, in pixels.
Definition: view.cpp:1028
bool m_mirrorY
Vertical flip flag
Definition: view.h:792
void ClearTargets()
Function ClearTargets() Clears targets that are marked as dirty.
Definition: view.cpp:984
std::vector< VIEW_LAYER * >::iterator LAYER_ORDER_ITER
Definition: view.h:671
double GetScale() const
Function GetScale()
Definition: view.h:265
void SetVisible(VIEW_ITEM *aItem, bool aIsVisible=true)
Sets the item visibility.
Definition: view.cpp:1331
void CopySettings(const VIEW *aOtherView)
Function CopySettings() Copies layers and visibility settings from another view.
Definition: view.cpp:479
void SetPainter(PAINTER *aPainter)
Function SetPainter() Sets the painter object used by the view for drawing VIEW_ITEMS.
Definition: view.h:186
LAYER_MAP m_layers
Contains set of possible displayed layers and its properties.
Definition: view.h:765
double m_scale
Scale of displayed VIEW_ITEMs.
Definition: view.h:777
int renderingOrder
rendering order of this layer
Definition: view.h:661
bool displayOnly
is the layer display only?
Definition: view.h:659
virtual void Add(VIEW_ITEM *aItem, int aDrawPriority=-1)
Function Add() Adds a VIEW_ITEM to the view.
Definition: view.cpp:312
virtual ~VIEW()
Definition: view.cpp:288
RENDER_TARGET
RENDER_TARGET: Possible rendering targets.
Definition: definitions.h:39
VIEW(bool aIsDynamic=true)
Constructor.
Definition: view.cpp:261
Class VIEW.
Definition: view.h:58
bool IsVisible(const VIEW_ITEM *aItem) const
Returns information if the item is visible (or not).
Definition: view.cpp:1371
void UpdateAllLayersColor()
Function UpdateAllLayersColor() Applies the new coloring scheme to all layers.
Definition: view.cpp:675
bool IsDrawOrderReversed() const
Function IsDrawOrderReversed()
Definition: view.h:637
void SetGAL(GAL *aGal)
Function SetGAL() Assigns a rendering device for the VIEW.
Definition: view.cpp:485
void ClearLayer(int aLayer)
Function ClearLayer() Removes all items from a given layer.
static bool compareRenderingOrder(VIEW_LAYER *aI, VIEW_LAYER *aJ)
Determines rendering order of layers. Used in display order sorting function.
Definition: view.h:753
bool IsDynamic() const
Function IsDynamic() Tells if the VIEW is dynamic (ie.
Definition: view.h:529
void MarkDirty()
Function MarkDirty() Forces redraw of view on the next rendering.
Definition: view.h:594
std::set< int > requiredLayers
layers that have to be enabled to show the layer
Definition: view.h:664
Class GAL is the abstract interface for drawing on a 2D-surface.
VIEW_RTREE * items
R-tree indexing all items on this layer.
Definition: view.h:660
RENDER_TARGET target
where the layer should be rendered
Definition: view.h:663