kicad/include/painter.h

249 lines
8.4 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2012 SoftPLC Corporation, Dick Hollenbeck <dick@softplc.com>
* Copyright (C) 2013 CERN
* @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
*/
#ifndef __CLASS_PAINTER_H
#define __CLASS_PAINTER_H
#include <map>
#include <set>
#include <gal/color4d.h>
#include <colors.h>
class EDA_ITEM;
class COLORS_DESIGN_SETTINGS;
namespace KiGfx
{
class GAL;
class VIEW_ITEM;
/**
* Class RENDER_SETTINGS
* Contains all the knowledge about how graphical objects are drawn on
* any output surface/device. This includes:
* - color/transparency settings
* - highlighting and high contrast mode control
* - drawing quality control (sketch/outline mode)
* The class acts as an interface between the PAINTER object and the GUI (i.e. Layers/Items
* widget or display options dialog).
*/
class RENDER_SETTINGS
{
public:
RENDER_SETTINGS();
virtual ~RENDER_SETTINGS();
/**
* Function Update
* Precalculates extra colors for layers (eg. highlighted, darkened and any needed version
* of base colors).
*/
virtual void Update();
/**
* Function ImportLegacyColors
* Loads a list of color settings for layers.
* @param aSettings is a list of color settings.
*/
virtual void ImportLegacyColors( COLORS_DESIGN_SETTINGS* aSettings ) = 0;
/**
* Function SetActiveLayer
* Sets the specified layer as active - it means that it can be drawn in a specific mode
* (eg. highlighted, so it differs from other layers).
* @param aLayerId is a layer number that should be displayed in a specific mode.
*/
inline void SetActiveLayer( int aLayerId, bool aEnabled = true )
{
if( aEnabled )
m_activeLayers.insert( aLayerId );
else
m_activeLayers.erase( aLayerId );
}
/**
* Function ClearActiveLayers
* Clears the list of active layers.
*/
inline void ClearActiveLayers()
{
m_activeLayers.clear();
}
/**
* Function SetHighlight
* Turns on/off highlighting - it may be done for the active layer or the specified net.
* @param aEnabled tells if highlighting should be enabled.
* @param aNetCode is optional and if specified, turns on higlighting only for the net with
* number given as the parameter.
*/
inline void SetHighlight( bool aEnabled, int aNetcode = -1 )
{
m_highlightEnabled = aEnabled;
if( aNetcode > 0 )
m_highlightNetcode = aNetcode;
}
/**
* Function SetHighContrast
* Turns on/off high contrast display mode.
* @param aEnabled determines if high contrast display mode should be enabled or not.
*/
inline void SetHighContrast( bool aEnabled )
{
m_hiContrastEnabled = aEnabled;
}
protected:
std::set<unsigned int> m_activeLayers; /// Stores active layers number
/// Parameters for display modes
bool m_hiContrastEnabled; /// High contrast display mode on/off
COLOR4D m_hiContrastColor; /// Color used for high contrast display mode
float m_hiContrastFactor; /// Factor used for computing high contrast color
bool m_highlightEnabled; /// Highlight display mode on/off
int m_highlightNetcode; /// Net number that is displayed in highlight
/// -1 means that there is no specific net, and whole active
/// layer is highlighted
float m_highlightFactor; /// Factor used for computing hightlight color
COLOR4D m_selectionBorderColor; /// Color of selection box border
float m_selectFactor; /// Specifies how color of selected items is changed
float m_layerOpacity; /// Determines opacity of all layers, so every can be seen
/// at the same time
float m_outlineWidth; /// Line width used when drawing outlines
/// Map of colors that were usually used for display
std::map<EDA_COLOR_T, COLOR4D> m_legacyColorMap;
};
/**
* Class PAINTER
* contains all the knowledge about how to draw graphical object onto
* any particular output device.
* This knowledge is held outside the individual graphical objects so that
* alternative output devices may be used, and so that the graphical objects
* themselves to not contain drawing routines. Drawing routines in the objects
* cause problems with usages of the objects as simple container objects in
* DLL/DSOs.
* PAINTER is an abstract layer, because every module (pcbnew, eeschema, etc.)
* has to draw different kinds of objects.
*/
class PAINTER
{
public:
/*
* Constructor PAINTER( GAL* )
* initializes this object for painting on any of the polymorphic
* GRAPHICS_ABSTRACTION_LAYER* derivatives.
*
* @param aGal is a pointer to a polymorphic GAL device on which
* to draw (i.e. Cairo, OpenGL, wxDC)
* No ownership is given to this PAINTER of aGal.
*/
PAINTER( GAL* aGal );
virtual ~PAINTER();
/**
* Function ApplySettings
* Loads colors and display modes settings that are going to be used when drawing items.
* @param aSettings are settings to be applied.
*/
virtual void ApplySettings( RENDER_SETTINGS* aSettings )
{
if( m_settings )
delete m_settings;
m_settings = aSettings;
}
/**
* Function SetGAL
* Changes Graphics Abstraction Layer used for drawing items for a new one.
* @param aGal is the new GAL instance.
*/
void SetGAL( GAL* aGal );
/**
* Function GetSettings
* Returns pointer to current settings that are going to be used when drawing items.
* @return Current rendering settings.
*/
virtual RENDER_SETTINGS* GetSettings()
{
return m_settings;
}
/**
* Function Draw
* Takes an instance of VIEW_ITEM and passes it to a function that know how to draw the item.
* @param aItem is an item to be drawn.
* @param aLayer tells which layer is currently rendered so that draw functions
* may know what to draw (eg. for pads there are separate layers for holes, because they
* have other dimensions then the pad itself.
*/
virtual bool Draw( const VIEW_ITEM* aItem, int aLayer ) = 0;
/**
* Function GetColor
* Returns the color that should be used to draw the specific VIEW_ITEM on the specific layer
* using currently used render settings.
* @param aItem is the VIEW_ITEM.
* @param aLayer is the layer.
* @return The color.
*/
virtual const COLOR4D& GetColor( const VIEW_ITEM* aItem, int aLayer ) = 0;
protected:
/**
* Function getLayerColor
* is used for obtaining color that should be used for specific layer/net
* combination using stored color settings.
* @param aLayer is the layer number that is being drawn.
* @param aNetCode is a number of the net that is being drawn.
* @param aHighlighted says if the item is marked as highlighted.
*/
virtual const COLOR4D& getLayerColor( int aLayer, int aNetCode, bool aHighlighted ) const = 0;
/// Instance of graphic abstraction layer that gives an interface to call
/// commands used to draw (eg. DrawLine, DrawCircle, etc.)
GAL* m_gal;
/// Colors and display modes settings that are going to be used when drawing items.
RENDER_SETTINGS* m_settings;
};
} // namespace KiGfx
#endif /* __CLASS_PAINTER_H */