526 lines
13 KiB
C++
526 lines
13 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2013 CERN
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* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef __TOOL_EVENT_H
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#define __TOOL_EVENT_H
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#include <cstdio>
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#include <deque>
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#include <math/vector2d.h>
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#include <cassert>
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#include <boost/optional.hpp>
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class TOOL_ACTION;
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class TOOL_MANAGER;
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/**
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* Internal (GUI-independent) event definitions.
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* Enums are mostly self-explanatory.
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*/
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enum TOOL_EVENT_CATEGORY
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{
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TC_NONE = 0x00,
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TC_MOUSE = 0x01,
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TC_KEYBOARD = 0x02,
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TC_COMMAND = 0x04,
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TC_MESSAGE = 0x08,
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TC_VIEW = 0x10,
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TC_ANY = 0xffffffff
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};
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enum TOOL_ACTIONS
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{
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// UI input events
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TA_NONE = 0x0000,
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TA_MOUSE_CLICK = 0x0001,
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TA_MOUSE_DBLCLICK = 0x0002,
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TA_MOUSE_UP = 0x0004,
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TA_MOUSE_DOWN = 0x0008,
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TA_MOUSE_DRAG = 0x0010,
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TA_MOUSE_MOTION = 0x0020,
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TA_MOUSE_WHEEL = 0x0040,
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TA_MOUSE = 0x007f,
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TA_KEY_PRESSED = 0x0080,
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TA_KEYBOARD = TA_KEY_PRESSED,
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// View related events
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TA_VIEW_REFRESH = 0x0100,
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TA_VIEW_ZOOM = 0x0200,
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TA_VIEW_PAN = 0x0400,
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TA_VIEW_DIRTY = 0x0800,
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TA_VIEW = 0x0f00,
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TA_CHANGE_LAYER = 0x1000,
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// Tool cancel event. Issued automagically when the user hits escape or selects End Tool from
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// the context menu.
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TA_CANCEL_TOOL = 0x2000,
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// Context menu update. Issued whenever context menu is open and the user hovers the mouse
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// over one of choices. Used in dynamic highligting in disambiguation menu
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TA_CONTEXT_MENU_UPDATE = 0x4000,
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// Context menu choice. Sent if the user picked something from the context menu or
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// closed it without selecting anything.
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TA_CONTEXT_MENU_CHOICE = 0x8000,
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// This event is sent *before* undo/redo command is performed.
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TA_UNDO_REDO = 0x10000,
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// Tool action (allows to control tools).
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TA_ACTION = 0x20000,
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// Tool activation event.
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TA_ACTIVATE = 0x40000,
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TA_ANY = 0xffffffff
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};
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enum TOOL_MOUSE_BUTTONS
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{
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BUT_NONE = 0x0,
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BUT_LEFT = 0x1,
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BUT_RIGHT = 0x2,
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BUT_MIDDLE = 0x4,
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BUT_BUTTON_MASK = BUT_LEFT | BUT_RIGHT | BUT_MIDDLE,
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BUT_ANY = 0xffffffff
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};
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enum TOOL_MODIFIERS
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{
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MD_SHIFT = 0x1000,
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MD_CTRL = 0x2000,
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MD_ALT = 0x4000,
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MD_MODIFIER_MASK = MD_SHIFT | MD_CTRL | MD_ALT,
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};
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/// Scope of tool actions
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enum TOOL_ACTION_SCOPE
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{
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AS_CONTEXT = 1, ///> Action belongs to a particular tool (i.e. a part of a pop-up menu)
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AS_ACTIVE, ///> All active tools
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AS_GLOBAL ///> Global action (toolbar/main menu event, global shortcut)
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};
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/// Flags for tool actions
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enum TOOL_ACTION_FLAGS
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{
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AF_NONE = 0,
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AF_ACTIVATE = 1 ///> Action activates a tool
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};
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/// Defines when a context menu is opened.
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enum CONTEXT_MENU_TRIGGER
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{
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CMENU_BUTTON = 0, // On the right button
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CMENU_NOW, // Right now (after TOOL_INTERACTIVE::SetContextMenu)
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CMENU_OFF // Never
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};
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/**
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* Class TOOL_EVENT
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*
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* Generic, UI-independent tool event.
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*/
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class TOOL_EVENT
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{
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public:
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/**
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* Function Format()
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* Returns information about event in form of a human-readable string.
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*
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* @return Event information.
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*/
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const std::string Format() const;
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TOOL_EVENT( TOOL_EVENT_CATEGORY aCategory = TC_NONE, TOOL_ACTIONS aAction = TA_NONE,
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TOOL_ACTION_SCOPE aScope = AS_GLOBAL ) :
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m_category( aCategory ),
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m_actions( aAction ),
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m_scope( aScope ),
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m_mouseButtons( 0 ),
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m_keyCode( 0 ),
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m_modifiers( 0 ) {}
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TOOL_EVENT( TOOL_EVENT_CATEGORY aCategory, TOOL_ACTIONS aAction, int aExtraParam,
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TOOL_ACTION_SCOPE aScope = AS_GLOBAL ) :
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m_category( aCategory ),
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m_actions( aAction ),
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m_scope( aScope )
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{
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if( aCategory == TC_MOUSE )
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{
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m_mouseButtons = aExtraParam & BUT_BUTTON_MASK;
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}
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else if( aCategory == TC_KEYBOARD )
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{
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m_keyCode = aExtraParam & ~MD_MODIFIER_MASK; // Filter out modifiers
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}
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else if( aCategory == TC_COMMAND )
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{
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m_commandId = aExtraParam;
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}
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if( aCategory & ( TC_MOUSE | TC_KEYBOARD ) )
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{
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m_modifiers = aExtraParam & MD_MODIFIER_MASK;
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}
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}
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TOOL_EVENT( TOOL_EVENT_CATEGORY aCategory, TOOL_ACTIONS aAction,
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const std::string& aExtraParam, TOOL_ACTION_SCOPE aScope = AS_GLOBAL ) :
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m_category( aCategory ),
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m_actions( aAction ),
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m_scope( aScope ),
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m_mouseButtons( 0 )
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{
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if( aCategory == TC_COMMAND || aCategory == TC_MESSAGE )
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m_commandStr = aExtraParam;
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}
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///> Returns the category (eg. mouse/keyboard/action) of an event..
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TOOL_EVENT_CATEGORY Category() const
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{
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return m_category;
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}
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///> Returns more specific information about the type of an event.
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TOOL_ACTIONS Action() const
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{
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return m_actions;
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}
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///> Returns information about difference between current mouse cursor position and the place
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///> where dragging has started.
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const VECTOR2D& Delta() const
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{
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assert( m_category == TC_MOUSE ); // this should be used only with mouse events
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return m_mouseDelta;
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}
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///> Returns mouse cursor position in world coordinates.
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const VECTOR2D& Position() const
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{
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assert( m_category == TC_MOUSE ); // this should be used only with mouse events
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return m_mousePos;
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}
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///> Returns the point where dragging has started.
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const VECTOR2D& DragOrigin() const
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{
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assert( m_category == TC_MOUSE ); // this should be used only with mouse events
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return m_mouseDragOrigin;
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}
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///> Returns information about mouse buttons state.
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int Buttons() const
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{
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assert( m_category == TC_MOUSE ); // this should be used only with mouse events
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return m_mouseButtons;
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}
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bool IsClick( int aButtonMask = BUT_ANY ) const
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{
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return ( m_actions == TA_MOUSE_CLICK )
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&& ( ( m_mouseButtons & aButtonMask ) == aButtonMask );
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}
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bool IsDblClick( int aButtonMask = BUT_ANY ) const
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{
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return ( m_actions == TA_MOUSE_DBLCLICK )
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&& ( ( m_mouseButtons & aButtonMask ) == aButtonMask );
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}
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bool IsDrag( int aButtonMask = BUT_ANY ) const
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{
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return ( m_actions == TA_MOUSE_DRAG ) && ( ( m_mouseButtons & aButtonMask ) == aButtonMask );
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}
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bool IsMouseUp( int aButtonMask = BUT_ANY ) const
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{
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return ( m_actions == TA_MOUSE_UP ) && ( ( m_mouseButtons & aButtonMask ) == aButtonMask );
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}
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bool IsMotion() const
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{
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return m_actions == TA_MOUSE_MOTION;
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}
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bool IsCancel() const
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{
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return m_actions == TA_CANCEL_TOOL;
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}
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bool IsActivate() const
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{
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return m_actions == TA_ACTIVATE;
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}
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///> Returns information about key modifiers state (Ctrl, Alt, etc.)
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int Modifier( int aMask = MD_MODIFIER_MASK ) const
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{
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return m_modifiers & aMask;
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}
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int KeyCode() const
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{
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return m_keyCode;
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}
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bool IsKeyPressed() const
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{
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return m_actions == TA_KEY_PRESSED;
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}
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void SetMouseDragOrigin( const VECTOR2D& aP )
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{
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m_mouseDragOrigin = aP;
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}
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void SetMousePosition( const VECTOR2D& aP )
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{
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m_mousePos = aP;
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}
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void SetMouseDelta( const VECTOR2D& aP )
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{
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m_mouseDelta = aP;
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}
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/**
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* Function Matches()
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* Tests whether two events match in terms of category & action or command.
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*
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* @param aEvent is the event to test against.
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* @return True if two events match, false otherwise.
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*/
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bool Matches( const TOOL_EVENT& aEvent ) const
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{
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if( !( m_category & aEvent.m_category ) )
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return false;
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if( !( m_actions & aEvent.m_actions ) )
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return false;
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if( m_category == TC_COMMAND || m_category == TC_MESSAGE )
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{
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if( m_commandStr && aEvent.m_commandStr )
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return *m_commandStr == *aEvent.m_commandStr;
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if( m_commandId && aEvent.m_commandId )
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return *m_commandId == *aEvent.m_commandId;
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}
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return true;
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}
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/**
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* Function IsAction()
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* Tests if the event contains an action issued upon activation of the given TOOL_ACTION.
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* @param aAction is the TOOL_ACTION to be checked against.
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* @return True if it matches the given TOOL_ACTION.
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*/
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bool IsAction( const TOOL_ACTION* aAction ) const;
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boost::optional<int> GetCommandId() const
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{
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return m_commandId;
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}
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boost::optional<std::string> GetCommandStr() const
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{
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return m_commandStr;
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}
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private:
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friend class TOOL_MANAGER;
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TOOL_EVENT_CATEGORY m_category;
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TOOL_ACTIONS m_actions;
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TOOL_ACTION_SCOPE m_scope;
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///> Difference between mouse cursor position and
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///> the point where dragging event has started
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VECTOR2D m_mouseDelta;
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///> Current mouse cursor position
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VECTOR2D m_mousePos;
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///> Point where dragging has started
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VECTOR2D m_mouseDragOrigin;
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///> State of mouse buttons
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int m_mouseButtons;
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///> Stores code of pressed/released key
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int m_keyCode;
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///> State of key modifierts (Ctrl/Alt/etc.)
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int m_modifiers;
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boost::optional<int> m_commandId;
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boost::optional<std::string> m_commandStr;
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};
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typedef boost::optional<TOOL_EVENT> OPT_TOOL_EVENT;
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/**
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* Class TOOL_EVENT_LIST
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*
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* A list of TOOL_EVENTs, with overloaded || operators allowing for
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* concatenating TOOL_EVENTs with little code.
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*/
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class TOOL_EVENT_LIST
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{
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public:
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typedef TOOL_EVENT value_type;
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typedef std::deque<TOOL_EVENT>::iterator iterator;
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typedef std::deque<TOOL_EVENT>::const_iterator const_iterator;
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///> Default constructor. Creates an empty list.
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TOOL_EVENT_LIST()
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{}
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///> Constructor for a list containing only one TOOL_EVENT.
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TOOL_EVENT_LIST( const TOOL_EVENT& aSingleEvent )
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{
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m_events.push_back( aSingleEvent );
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}
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/**
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* Function Format()
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* Returns information about event in form of a human-readable string.
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*
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* @return Event information.
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*/
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const std::string Format() const;
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boost::optional<const TOOL_EVENT&> Matches( const TOOL_EVENT& aEvent ) const
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{
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for( const_iterator i = m_events.begin(); i != m_events.end(); ++i )
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if( i->Matches( aEvent ) )
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return *i;
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return boost::optional<const TOOL_EVENT&>();
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}
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/**
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* Function Add()
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* Adds a tool event to the list.
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* @param aEvent is the tool event to be addded.
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*/
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void Add( const TOOL_EVENT& aEvent )
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{
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m_events.push_back( aEvent );
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}
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iterator begin()
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{
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return m_events.begin();
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}
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iterator end()
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{
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return m_events.end();
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}
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const_iterator cbegin() const
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{
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return m_events.begin();
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}
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const_iterator cend() const
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{
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return m_events.end();
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}
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int size() const
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{
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return m_events.size();
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}
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void clear()
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{
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m_events.clear();
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}
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TOOL_EVENT_LIST& operator=( const TOOL_EVENT_LIST& aEventList )
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{
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m_events.clear();
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for( std::deque<TOOL_EVENT>::const_iterator i = aEventList.m_events.begin();
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i != aEventList.m_events.end(); ++i )
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{
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m_events.push_back( *i );
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}
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return *this;
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}
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TOOL_EVENT_LIST& operator=( const TOOL_EVENT& aEvent )
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{
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m_events.clear();
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m_events.push_back( aEvent );
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return *this;
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}
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TOOL_EVENT_LIST& operator||( const TOOL_EVENT& aEvent )
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{
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Add( aEvent );
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return *this;
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}
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TOOL_EVENT_LIST& operator||( const TOOL_EVENT_LIST& aEvent )
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{
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return *this;
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}
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private:
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std::deque<TOOL_EVENT> m_events;
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};
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inline const TOOL_EVENT_LIST operator||( const TOOL_EVENT& aEventA, const TOOL_EVENT& aEventB )
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{
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TOOL_EVENT_LIST l;
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l.Add( aEventA );
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l.Add( aEventB );
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return l;
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}
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inline const TOOL_EVENT_LIST operator||( const TOOL_EVENT& aEvent,
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const TOOL_EVENT_LIST& aEventList )
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{
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TOOL_EVENT_LIST l( aEventList );
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l.Add( aEvent );
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return l;
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}
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#endif
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