Merge pull request #3 from saurabhb17/master

secondary files

1 files changed, 314 insertions, 0 deletions

diff --git a/include/painter.h b/include/painter.h
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+++ b/include/painter.h
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+/*
+ * 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>
+#include <worksheet_shape_builder.h>
+#include <boost/shared_ptr.hpp>
+
+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 ImportLegacyColors
+     * Loads a list of color settings for layers.
+     * @param aSettings is a list of color settings.
+     */
+    virtual void ImportLegacyColors( const 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 GetActiveLayers()
+     * Returns the set of currently active layers.
+     * @return The set of currently active layers.
+     */
+    const std::set<unsigned int> GetActiveLayers()
+    {
+        return m_activeLayers;
+    }
+
+    /**
+     * Function ClearActiveLayers
+     * Clears the list of active layers.
+     */
+    inline void ClearActiveLayers()
+    {
+        m_activeLayers.clear();
+    }
+
+    /**
+     * Function IsActiveLayer
+     * Returns information whether the queried layer is marked as active.
+     * @return True if the queried layer is marked as active.
+     */
+    inline bool IsActiveLayer( int aLayerId ) const
+    {
+        return ( m_activeLayers.count( aLayerId ) > 0 );
+    }
+
+    /**
+     * Function IsHighlightEnabled
+     * Returns current highlight setting.
+     * @return True if highlight is enabled, false otherwise.
+     */
+    inline bool IsHighlightEnabled() const
+    {
+        return m_highlightEnabled;
+    }
+
+    /**
+     * Function GetHighlightNetCode
+     * Returns netcode of currently highlighted net.
+     * @return Netcode of currently highlighted net.
+     */
+    inline int GetHighlightNetCode() const
+    {
+        return m_highlightNetcode;
+    }
+
+    /**
+     * 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;
+        m_highlightNetcode = aEnabled ? aNetcode : -1;
+    }
+
+    /**
+     * 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;
+    }
+
+    /**
+     * Function GetHighContrast
+     * Returns information about high contrast display mode.
+     * @return True if the high contrast mode is on, false otherwise.
+     */
+    inline bool GetHighContrast() const
+    {
+        return m_hiContrastEnabled;
+    }
+
+    /**
+     * 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 ) const = 0;
+
+    float GetWorksheetLineWidth() const
+    {
+        return m_worksheetLineWidth;
+    }
+
+    /**
+     * Function TranslateColor
+     * Returns the color responding to the one of EDA_COLOR_T enum values.
+     * @param aColor equivalent.
+     */
+    inline const COLOR4D& TranslateColor( EDA_COLOR_T aColor )
+    {
+        return m_legacyColorMap[aColor];
+    }
+
+    /**
+     * Function GetBackgroundColor
+     * Returns current background color settings.
+     * @return Background color.
+     */
+    inline const COLOR4D& GetBackgroundColor() const
+    {
+        return m_backgroundColor;
+    }
+
+    /**
+     * Function SetBackgroundColor
+     * Sets new color for background.
+     * @param aColor is the new background color.
+     */
+    inline void SetBackgroundColor( const COLOR4D& aColor )
+    {
+        m_backgroundColor = aColor;
+    }
+
+protected:
+    /**
+     * Function update
+     * Precalculates extra colors for layers (e.g. highlighted, darkened and any needed version
+     * of base colors).
+     */
+    virtual void update();
+
+    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
+
+    float   m_selectFactor;         ///< Specifies how color of selected items is changed
+    float   m_layerOpacity;         ///< Determines opacity of all layers
+    float   m_outlineWidth;         ///< Line width used when drawing outlines
+    float   m_worksheetLineWidth;   ///< Line width used when drawing worksheet
+
+    COLOR4D m_backgroundColor;      ///< The background color
+
+    /// 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 SetGAL
+     * Changes Graphics Abstraction Layer used for drawing items for a new one.
+     * @param aGal is the new GAL instance.
+     */
+    void SetGAL( GAL* aGal )
+    {
+        m_gal = aGal;
+    }
+
+    /**
+     * 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( const RENDER_SETTINGS* aSettings ) = 0;
+
+    /**
+     * Function GetSettings
+     * Returns pointer to current settings that are going to be used when drawing items.
+     * @return Current rendering settings.
+     */
+    virtual RENDER_SETTINGS* GetSettings() = 0;
+
+    /**
+     * 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;
+
+protected:
+    /// Instance of graphic abstraction layer that gives an interface to call
+    /// commands used to draw (eg. DrawLine, DrawCircle, etc.)
+    GAL* m_gal;
+
+    /// Color of brightened item frame
+    COLOR4D m_brightenedColor;
+};
+} // namespace KIGFX
+
+#endif /* __CLASS_PAINTER_H */