434 lines
15 KiB
C++
434 lines
15 KiB
C++
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2013 CERN
|
|
* @author Tomasz Wlostowski <tomasz.wlostowski@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
|
|
*/
|
|
|
|
#ifndef __VIEW_H
|
|
#define __VIEW_H
|
|
|
|
#include <vector>
|
|
#include <boost/unordered/unordered_map.hpp>
|
|
|
|
#include <math/box2.h>
|
|
|
|
namespace KiGfx
|
|
{
|
|
class PAINTER;
|
|
class GAL;
|
|
class VIEW_ITEM;
|
|
class VIEW_RTREE;
|
|
|
|
/**
|
|
* Class VIEW.
|
|
* Holds a (potentially large) number of VIEW_ITEMs and renders them on a graphics device
|
|
* provided by the GAL. VIEWs can exist in two flavors:
|
|
* - dynamic - where items can be added, removed or changed anytime, intended for the main
|
|
* editing panel. Each VIEW_ITEM can be added to a single dynamic view.
|
|
* - static - where items are added once at the startup and are not linked with the VIEW.
|
|
* Foreseen for preview windows and printing.
|
|
* Items in a view are grouped in layers (not to be confused with Kicad's PCB layers). Each layer is
|
|
* identified by an integer number. Visibility and rendering order can be set individually for each
|
|
* of the layers. Future versions of the VIEW will also allow to assign different layers to different
|
|
* rendering targets, which will be composited at the final stage by the GAL.
|
|
* The VIEW class also provides fast methods for finding all visible objects that are within a given
|
|
* rectangular area, useful for object selection/hit testing.
|
|
*/
|
|
class VIEW
|
|
{
|
|
public:
|
|
friend class VIEW_ITEM;
|
|
|
|
typedef std::pair<VIEW_ITEM*, int> LayerItemPair;
|
|
|
|
/**
|
|
* Constructor.
|
|
* @param aIsDynamic decides whether we are creating a static or a dynamic VIEW.
|
|
* @param aUseGroups tells if items added to the VIEW should be stored in groups.
|
|
*/
|
|
VIEW( bool aIsDynamic = true );
|
|
|
|
~VIEW();
|
|
|
|
/**
|
|
* Function Add()
|
|
* Adds a VIEW_ITEM to the view.
|
|
* @param aItem: item to be added. No ownership is given
|
|
*/
|
|
void Add( VIEW_ITEM* aItem );
|
|
|
|
/**
|
|
* Function Remove()
|
|
* Removes a VIEW_ITEM from the view.
|
|
* @param aItem: item to be removed. Caller must dispose the removed item if necessary
|
|
*/
|
|
void Remove( VIEW_ITEM* aItem );
|
|
|
|
/** Function Query()
|
|
* Finds all visible items that touch or are within the rectangle aRect.
|
|
* @param aRect area to search for items
|
|
* @param aResult result of the search, containing VIEW_ITEMs associated with their layers.
|
|
* Sorted according to the rendering order (items that are on top of the rendering stack as first).
|
|
* @return Number of found items.
|
|
*/
|
|
int Query( const BOX2I& aRect, std::vector<LayerItemPair>& aResult );
|
|
|
|
/**
|
|
* Function CopySettings()
|
|
* Copies layers and visibility settings from another view.
|
|
* @param aOtherView: view from which settings will be copied.
|
|
*/
|
|
void CopySettings( const VIEW* aOtherView );
|
|
|
|
/*
|
|
* Convenience wrappers for adding multiple items
|
|
* template<class T> void AddItems( const T& aItems );
|
|
* template<class T> void RemoveItems( const T& aItems );
|
|
*/
|
|
|
|
/**
|
|
* Function SetGAL()
|
|
* Assigns a rendering device for the VIEW.
|
|
* @param aGal: pointer to the GAL output device
|
|
*/
|
|
void SetGAL( GAL* aGal );
|
|
|
|
/**
|
|
* Function GetGAL()
|
|
* Returns the GAL this view is using to draw graphical primitives.
|
|
* @return Pointer to the currently used GAL instance.
|
|
*/
|
|
GAL* GetGAL() const { return m_gal; }
|
|
|
|
/**
|
|
* Function SetPainter()
|
|
* Sets the painter object used by the view for drawing VIEW_ITEMS.
|
|
*/
|
|
void SetPainter( PAINTER* aPainter );
|
|
|
|
/**
|
|
* Function GetPainter()
|
|
* Returns the painter object used by the view for drawing VIEW_ITEMS.
|
|
* @return Pointer to the currently used Painter instance.
|
|
*/
|
|
PAINTER* GetPainter() const { return m_painter; };
|
|
|
|
/**
|
|
* Function SetViewport()
|
|
* Sets the visible area of the VIEW.
|
|
* @param aViewport: desired visible area, in world space coordinates.
|
|
* @param aKeepProportions: when true, the X/Y size proportions are kept.
|
|
*/
|
|
void SetViewport( const BOX2D& aViewport, bool aKeepProportions = true );
|
|
|
|
/**
|
|
* Function GetViewport()
|
|
* Returns the current viewport visible area rectangle.
|
|
* @return Current viewport rectangle
|
|
*/
|
|
BOX2D GetViewport() const;
|
|
|
|
/**
|
|
* Function SetMirror()
|
|
* Controls the mirroring of the VIEW.
|
|
* @param aMirrorX: when true, the X axis is mirrored
|
|
* @param aMirrorY: when true, the Y axis is mirrored.
|
|
*/
|
|
void SetMirror( bool aMirrorX, bool aMirrorY );
|
|
|
|
/**
|
|
* Function SetScale()
|
|
* Sets the scaling factor. Scale = 1 corresponds to the real world size of the objects
|
|
* (depending on correct GAL unit length & DPI settings).
|
|
* @param aScale: the scalefactor
|
|
*/
|
|
void SetScale( double aScale );
|
|
|
|
/**
|
|
* Function SetScale()
|
|
* Sets the scaling factor, zooming around a given anchor point.
|
|
* (depending on correct GAL unit length & DPI settings).
|
|
* @param aScale: the scale factor
|
|
*/
|
|
void SetScale( double aScale, const VECTOR2D& aAnchor );
|
|
|
|
/**
|
|
* Function GetScale()
|
|
* @return Current scalefactor of this VIEW
|
|
*/
|
|
double GetScale() const { return m_scale; }
|
|
|
|
/**
|
|
* Function SetCenter()
|
|
* Sets the center point of the VIEW (i.e. the point in world space that will be drawn in the middle
|
|
* of the screen).
|
|
* @param aCenter: the new center point, in world space coordinates.
|
|
*/
|
|
void SetCenter( const VECTOR2D& aCenter );
|
|
|
|
/**
|
|
* Function GetCenter()
|
|
* Returns the center point of this VIEW (in world space coordinates)
|
|
* @return center point of the view
|
|
*/
|
|
const VECTOR2D& GetCenter() const { return m_center; }
|
|
|
|
/**
|
|
* Function ToWorld()
|
|
* Converts a screen space point/vector to a point/vector in world space coordinates.
|
|
* @param aCoord: the point/vector to be converted
|
|
* @param aAbsolute: when true, aCoord is treated as a point, otherwise - as a direction (vector)
|
|
*/
|
|
VECTOR2D ToWorld( const VECTOR2D& aCoord, bool aAbsolute = true ) const;
|
|
|
|
/**
|
|
* Function ToScreen()
|
|
* Converts a world space point/vector to a point/vector in screen space coordinates.
|
|
* @param aCoord: the point/vector to be converted
|
|
* @param aAbsolute: when true, aCoord is treated as a point, otherwise - as a direction (vector)
|
|
*/
|
|
VECTOR2D ToScreen( const VECTOR2D& aCoord, bool aAbsolute = true ) const;
|
|
|
|
/**
|
|
* Function ToScreen()
|
|
* Converts a world space coordinate to a coordinate in screen space coordinates.
|
|
* @param aCoord: the coordinate to be transformed.
|
|
* @param aAbsolute: when true, aCoord is treated as a point, otherwise - as a direction (vector)
|
|
*/
|
|
double ToScreen( double aCoord, bool aAbsolute = true ) const;
|
|
|
|
/**
|
|
* Function GetScreenPixelSize()
|
|
* Returns the size of the our rendering area, in pixels.
|
|
* @return viewport screen size
|
|
*/
|
|
VECTOR2D GetScreenPixelSize() const;
|
|
|
|
/**
|
|
* Function AddLayer()
|
|
* Adds a new layer to the view.
|
|
* @param aLayer: unique ID of the layer to be added.
|
|
* @param aDisplayOnly: layer is display-only (example: selection boxes, floating hints/menus).
|
|
* Objects belonging to this layer are not taken into account by Query() method.
|
|
*/
|
|
void AddLayer( int aLayer, bool aDisplayOnly = false );
|
|
|
|
/**
|
|
* Function ClearLayer()
|
|
* Removes all items from a given layer.
|
|
* @param aLayer: ID of the layer to be cleared
|
|
*/
|
|
void ClearLayer( int aLayer );
|
|
|
|
/**
|
|
* Function Clear()
|
|
* Removes all items from the view.
|
|
*/
|
|
void Clear();
|
|
|
|
/**
|
|
* Function SetLayerVisible()
|
|
* Controls the visibility of a particular layer.
|
|
* @param aLayer: the layer to show/hide. When ALL_LAYERS constant is given, all layers'
|
|
* visibility is updated
|
|
* @param aVisible: the obivous
|
|
*/
|
|
inline void SetLayerVisible( int aLayer, bool aVisible = true )
|
|
{
|
|
m_layers[aLayer].enabled = aVisible;
|
|
}
|
|
|
|
/**
|
|
* Function SetLayerDynamic()
|
|
* Turns on or off the dynamic parameter of a particular layer.
|
|
* @param aLayer: the layer
|
|
* @param aDynamic: the parameter
|
|
*/
|
|
inline void SetLayerCached( int aLayer, bool aCached = true )
|
|
{
|
|
m_layers[aLayer].cached = aCached;
|
|
}
|
|
|
|
/**
|
|
* Function SetLayerOrder()
|
|
* Sets rendering order of a particular layer.
|
|
* @param aLayer: the layer
|
|
* @param aRenderingOrder: arbitrary number denoting the rendering order.
|
|
* Lower values are rendered first.
|
|
*/
|
|
void SetLayerOrder( int aLayer, int aRenderingOrder );
|
|
|
|
/**
|
|
* Function UpdateLayerColor()
|
|
* Applies the new coloring scheme held by RENDER_SETTINGS in case that it has changed.
|
|
* @param aLayer is a number of the layer to be updated.
|
|
* @see RENDER_SETTINGS
|
|
*/
|
|
void UpdateLayerColor( int aLayer );
|
|
|
|
/**
|
|
* Function UpdateAllLayersColor()
|
|
* Applies the new coloring scheme to all layers. The used scheme is held by RENDER_SETTINGS.
|
|
* @see RENDER_SETTINGS
|
|
*/
|
|
void UpdateAllLayersColor();
|
|
|
|
/**
|
|
* Function ChangeLayerDepth()
|
|
* Changes the depth of items on the given layer.
|
|
* @param aLayer is a number of the layer to be updated.
|
|
* @param aDepth is the new depth.
|
|
*/
|
|
void ChangeLayerDepth( int aLayer, int aDepth );
|
|
|
|
/**
|
|
* Function SetTopLayer()
|
|
* Sets given layer to be displayed on the top or sets back the default order of layers.
|
|
* @param aLayer: the layer or -1 in case when no particular layer should
|
|
* be displayed on the top.
|
|
*/
|
|
void SetTopLayer( int aLayer );
|
|
|
|
/**
|
|
* Function EnableTopLayer()
|
|
* Enables or disables display of the top layer. When disabled - layers are rendered as usual
|
|
* with no influence from SetTopLayer function. Otherwise on the top there is displayed the
|
|
* layer set previously with SetTopLayer function.
|
|
* @param aEnabled: whether to enable or disable display of the top layer.
|
|
*/
|
|
void EnableTopLayer( bool aEnable );
|
|
|
|
/**
|
|
* Function Redraw()
|
|
* Immediately redraws the whole view.
|
|
*/
|
|
void Redraw();
|
|
|
|
/**
|
|
* Function PartialRedraw()
|
|
* Redraws only the parts of the view that have been affected by items
|
|
* for which ViewUpdate() function has been called since last redraw.
|
|
*/
|
|
void PartialRedraw();
|
|
|
|
/**
|
|
* Function RecacheAllItems()
|
|
* Rebuilds GAL display lists.
|
|
* @param aForceNow decides if every item should be instantly recached. Otherwise items are
|
|
* going to be recached when they become visible.
|
|
*/
|
|
void RecacheAllItems( bool aForceNow = false );
|
|
|
|
/**
|
|
* Function IsDynamic()
|
|
* Tells if the VIEW is dynamic (ie. can be changed, for example displaying PCBs in a window)
|
|
* or static (that cannot be modified, eg. displaying image/PDF).
|
|
*/
|
|
bool IsDynamic() const { return m_dynamic; }
|
|
|
|
static const int VIEW_MAX_LAYERS; ///* maximum number of layers that may be shown
|
|
static const int TOP_LAYER; ///* layer number for displaying items on the top
|
|
|
|
private:
|
|
struct VIEW_LAYER
|
|
{
|
|
bool enabled; ///* is the layer to be rendered?
|
|
bool isDirty; ///* does it contain any dirty items (updated since last redraw)
|
|
bool displayOnly; ///* is the layer display only?
|
|
bool cached; ///* items on non-cached layers are displayed in
|
|
///* immediate mode
|
|
VIEW_RTREE* items; ///* R-tree indexing all items on this layer.
|
|
std::vector<VIEW_ITEM*> dirtyItems; ///* set of dirty items collected since last redraw
|
|
int renderingOrder; ///* rendering order of this layer
|
|
int id; ///* layer ID
|
|
BOX2I extents; ///* sum of bboxes of all items on the layer
|
|
BOX2I dirtyExtents; ///* sum of bboxes of all dirty items on the layer
|
|
};
|
|
|
|
// Convenience typedefs
|
|
typedef boost::unordered_map<int, VIEW_LAYER> LayerMap;
|
|
typedef LayerMap::iterator LayerMapIter;
|
|
typedef std::vector<VIEW_LAYER*> LayerOrder;
|
|
typedef std::vector<VIEW_LAYER*>::iterator LayerOrderIter;
|
|
|
|
// Function objects that need to access VIEW/VIEW_ITEM private/protected members
|
|
struct clearLayerCache;
|
|
struct recacheLayer;
|
|
struct drawItem;
|
|
struct unlinkItem;
|
|
struct updateItemsColor;
|
|
struct changeItemsDepth;
|
|
|
|
///* Saves current top layer settings in order to restore it when it's not top anymore
|
|
VIEW_LAYER m_topLayer;
|
|
|
|
///* Whether to use top layer settings or not
|
|
bool m_enableTopLayer;
|
|
|
|
///* Redraws contents within rect aRect
|
|
void redrawRect( const BOX2I& aRect );
|
|
|
|
///* Manages dirty flags & redraw queueing when updating an item. Called internally
|
|
/// via VIEW_ITEM::ViewUpdate()
|
|
void invalidateItem( VIEW_ITEM* aItem, int aUpdateFlags );
|
|
|
|
///* Sorts m_orderedLayers when layer rendering order has changed
|
|
void sortLayers();
|
|
|
|
///* Clears cached GAL group numbers (*ONLY* numbers stored in VIEW_ITEMs, not group objects
|
|
///* used by GAL)
|
|
void clearGroupCache();
|
|
|
|
/// Determines rendering order of layers. Used in display order sorting function.
|
|
static bool compareRenderingOrder( VIEW_LAYER* i, VIEW_LAYER* j )
|
|
{
|
|
return i->renderingOrder > j->renderingOrder;
|
|
}
|
|
|
|
/// Checks if every layer stored in aLayers array is enabled.
|
|
bool isEveryLayerEnabled( const int aLayers[], int aCount ) const;
|
|
|
|
/// Contains set of possible displayed layers and its properties
|
|
LayerMap m_layers;
|
|
|
|
/// Sorted list of pointers to members of m_layers.
|
|
LayerOrder m_orderedLayers;
|
|
|
|
/// Center point of the VIEW (the point at which we are looking at)
|
|
VECTOR2D m_center;
|
|
|
|
/// Scale of displayed VIEW_ITEMs
|
|
double m_scale;
|
|
|
|
/// PAINTER contains information how do draw items
|
|
PAINTER* m_painter;
|
|
|
|
/// Gives interface to PAINTER, that is used to draw items
|
|
GAL* m_gal;
|
|
|
|
/// Dynamic VIEW (eg. display PCB in window) allows changes once it is built,
|
|
/// static (eg. image/PDF) - does not.
|
|
bool m_dynamic;
|
|
};
|
|
} // namespace KiGfx
|
|
|
|
#endif
|