ee_selection_tool.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2019 CERN
 * Copyright (C) 2019 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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 KICAD_SCH_SELECTION_TOOL_H
#define KICAD_SCH_SELECTION_TOOL_H

#include <tool/tool_interactive.h>
#include <tool/action_menu.h>
#include <tool/tool_menu.h>
#include <tools/ee_selection.h>
#include <ee_collectors.h>
#include <sch_component.h>
#include <cursors.h>

class SCH_BASE_FRAME;
class SCH_ITEM;

namespace KIGFX
{
    class GAL;
}


class EE_CONDITIONS : public SELECTION_CONDITIONS
{
public:
    static SELECTION_CONDITION SingleSymbol;
    static SELECTION_CONDITION SingleDeMorganSymbol;
    static SELECTION_CONDITION SingleMultiUnitSymbol;
};


class EE_SELECTION_TOOL : public TOOL_INTERACTIVE
{
public:
    EE_SELECTION_TOOL();
    ~EE_SELECTION_TOOL();

    bool Init() override;

    void Reset( RESET_REASON aReason ) override;

    int UpdateMenu( const TOOL_EVENT& aEvent );

    int Main( const TOOL_EVENT& aEvent );

    void OnIdle( wxIdleEvent& aEvent );

    EE_SELECTION& GetSelection();

    EE_SELECTION& RequestSelection( const KICAD_T* aFilterList = EE_COLLECTOR::AllItems );

    bool SelectPoint( const VECTOR2I& aWhere, const KICAD_T* aFilterList = EE_COLLECTOR::AllItems,
                      EDA_ITEM** aItem = nullptr, bool* aSelectionCancelledFlag = nullptr,
                      bool aCheckLocked = false, bool aAdd = false, bool aSubtract = false,
                      bool aExclusiveOr = false );

    int AddItemToSel( const TOOL_EVENT& aEvent );
    void AddItemToSel( EDA_ITEM* aItem, bool aQuietMode = false );
    int AddItemsToSel( const TOOL_EVENT& aEvent );
    void AddItemsToSel( EDA_ITEMS* aList, bool aQuietMode = false );

    int RemoveItemFromSel( const TOOL_EVENT& aEvent );
    void RemoveItemFromSel( EDA_ITEM* aItem, bool aQuietMode = false );
    int RemoveItemsFromSel( const TOOL_EVENT& aEvent );
    void RemoveItemsFromSel( EDA_ITEMS* aList, bool aQuietMode = false );

    void BrightenItem( EDA_ITEM* aItem );
    void UnbrightenItem( EDA_ITEM* aItem );

    void SelectHighlightItem( EDA_ITEM* aItem ) { highlight( aItem, SELECTED ); }

    EDA_ITEM* GetNode( VECTOR2I aPosition );

    int SelectNode( const TOOL_EVENT& aEvent );

    int SelectConnection( const TOOL_EVENT& aEvent );

    int ClearSelection( const TOOL_EVENT& aEvent );

    int SelectAll( const TOOL_EVENT& aEvent );

    void ClearSelection();

    bool Selectable( const EDA_ITEM* aItem, bool checkVisibilityOnly = false ) const;

    void GuessSelectionCandidates( EE_COLLECTOR& collector, const VECTOR2I& aPos );

    int SelectionMenu( const TOOL_EVENT& aEvent );

    void RebuildSelection();

private:
    bool collectHits( EE_COLLECTOR& aCollector, const VECTOR2I& aWhere,
                      const KICAD_T* aFilterList = EE_COLLECTOR::AllItems );

    void narrowSelection( EE_COLLECTOR& collector, const VECTOR2I& aWhere, bool aCheckLocked );

    bool selectPoint( EE_COLLECTOR& aCollector, EDA_ITEM** aItem = nullptr,
                      bool* aSelectionCancelledFlag = nullptr, bool aAdd = false,
                      bool aSubtract = false, bool aExclusiveOr = false );

    bool selectMultiple();

    bool doSelectionMenu( EE_COLLECTOR* aItems );

    void select( EDA_ITEM* aItem );

    void unselect( EDA_ITEM* aItem );

    void highlight( EDA_ITEM* aItem, int aHighlightMode, EE_SELECTION* aGroup = nullptr );

    void unhighlight( EDA_ITEM* aItem, int aHighlightMode, EE_SELECTION* aGroup = nullptr );

    void updateReferencePoint();

    bool selectionContains( const VECTOR2I& aPoint ) const;

    void setTransitions() override;

private:
    SCH_BASE_FRAME* m_frame;             // Pointer to the parent frame
    EE_SELECTION    m_selection;         // Current state of selection

    bool            m_additive;          // Items should be added to sel (instead of replacing)
    bool            m_subtractive;       // Items should be removed from sel
    bool            m_exclusive_or;      // Items' selection state should be toggled
    bool            m_multiple;          // Multiple selection mode is active
    bool            m_skip_heuristics;   // Show disambuguation menu for all items under the
                                         // cursor rather than trying to narrow them down first
                                         // using heuristics

    KICURSOR        m_nonModifiedCursor; // Cursor in the absence of shift/ctrl/alt

    bool            m_isSymbolEditor;    // True when the symbol editor is the parent frame
    bool            m_isLibView;         // True when libview is the parent frame
    int             m_unit;              // Fixed unit filter (for symbol editor)
    int             m_convert;           // Fixed DeMorgan filter (for symbol editor)
};

#endif //KICAD_SCH_SELECTION_TOOL_H