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Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: doc.h
	3	// Purpose: Document classes
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 12/07/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifndef _STUDIO_DOC_H_
	13	#define _STUDIO_DOC_H_
	14
	15	#ifdef __GNUG__
	16	// #pragma interface
	17	#endif
	18
	19	#include <wx/docview.h>
	20	#include <wx/string.h>
	21	#include <wx/wxexpr.h>
	22
	23	#include "ogl.h"
	24	#include "shapes.h"
	25
	26	/*
	27	* A diagram document, which contains a diagram.
	28	*/
	29
	30	class csDiagramDocument: public wxDocument
	31	{
	32	DECLARE_DYNAMIC_CLASS(csDiagramDocument)
	33	public:
	34	csDiagramDocument();
	35	~csDiagramDocument();
	36
	37	bool OnSaveDocument(const wxString& file);
	38	bool OnOpenDocument(const wxString& file);
	39
	40	inline wxDiagram *GetDiagram() { return &m_diagram; }
	41
	42	bool OnCloseDocument();
	43
	44	protected:
	45	csDiagram m_diagram;
	46	};
	47
	48	/*
	49	Do/Undo 30/7/98
	50
	51	1) We have a csCommandState, and in csDiagramCommand you have a list of
	52	these. This allows undo to work with several shapes at once.
	53
	54	2) Instead of storing info about each operation, e.g. separate pens, colours,
	55	etc., we simply use a copy of the shape.
	56	In csCommandState, we have a pointer to the actual shape in the canvas, m_currentShape.
	57	We also have wxShape* m_shapeState which stores the requested or previous state
	58	(depending on whether it's before the Do or after the Do.
	59
	60	- In Do: save a temp copy of the old m_currentShape (i.e. the state just before it's changed).
	61	Change the data pointed to by m_currentShape to the new attributes stored in m_shapeState.
	62	Now assign the temp copy to m_shapeState, for use in Undo.
	63
	64	wxShape* temp = m_currentShape->Copy(); // Take a copy of the current state
	65	m_currentShape->Set(m_shapeState); // Apply the new state (e.g. moving, changing colour etc.)
	66	delete m_shapeState; // Delete the previous 'old state'.
	67	m_shapeState = temp; // Remember the new 'old state'.
	68
	69	*/
	70
	71
	72	class csCommandState;
	73	class csDiagramCommand: public wxCommand
	74	{
	75	friend class csCommandState;
	76	public:
	77	// Multi-purpose constructor for creating, deleting shapes
	78	csDiagramCommand(const wxString& name, csDiagramDocument *doc,
	79	csCommandState* onlyState = NULL); // Allow for the common case of just one state to change
	80
	81	~csDiagramCommand();
	82
	83	bool Do();
	84	bool Undo();
	85
	86	// Add a state to the end of the list
	87	void AddState(csCommandState* state);
	88
	89	// Insert a state at the beginning of the list
	90	void InsertState(csCommandState* state);
	91
	92	// Schedule all lines connected to the states to be cut.
	93	void RemoveLines();
	94
	95	// Find the state that refers to this shape
	96	csCommandState* FindStateByShape(wxShape* shape);
	97
	98	wxList& GetStates() const { return (wxList&) m_states; }
	99
	100	protected:
	101	csDiagramDocument* m_doc;
	102	wxList m_states;
	103	};
	104
	105	class csCommandState: public wxObject
	106	{
	107	friend class csDiagramCommand;
	108	public:
	109	csCommandState(int cmd, wxShape* savedState, wxShape* shapeOnCanvas);
	110	~csCommandState();
	111
	112	bool Do();
	113	bool Undo();
	114
	115	inline void SetSavedState(wxShape *s) { m_savedState = s; }
	116	inline wxShape *GetSavedState() const { return m_savedState; }
	117
	118	inline void SetShapeOnCanvas(wxShape *s) { m_shapeOnCanvas = s; }
	119	inline wxShape *GetShapeOnCanvas() const { return m_shapeOnCanvas; }
	120	protected:
	121	wxShape* m_savedState; // Previous state, for restoring on Undo
	122	wxShape* m_shapeOnCanvas; // The actual shape on the canvas
	123	csDiagramDocument* m_doc;
	124	int m_cmd;
	125
	126	// These store the line ordering for the shapes at either end,
	127	// so an un-cut line can restore the ordering properly. Otherwise
	128	// it just adds the line at an arbitrary position.
	129	int m_linePositionFrom;
	130	int m_linePositionTo;
	131	};
	132
	133	#endif
	134	// _STUDIO_DOC_H_