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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	#if defined(__GNUG__) && !defined(__APPLE__)
	16	// #pragma interface
	17	#endif
	18
	19	#include <wx/docview.h>
	20	#include <wx/cmdproc.h>
	21	#include <wx/string.h>
	22
	23	#include <wx/deprecated/setup.h>
	24	#include <wx/deprecated/wxexpr.h>
	25
	26	#include <wx/ogl/ogl.h>
	27	#include "shapes.h"
	28
	29	/*
	30	* A diagram document, which contains a diagram.
	31	*/
	32
	33	class csDiagramDocument: public wxDocument
	34	{
	35	DECLARE_DYNAMIC_CLASS(csDiagramDocument)
	36	public:
	37	csDiagramDocument();
	38	~csDiagramDocument();
	39
	40	bool OnSaveDocument(const wxString& file);
	41	bool OnOpenDocument(const wxString& file);
	42
	43	inline wxDiagram *GetDiagram() { return &m_diagram; }
	44
	45	bool OnCloseDocument();
	46
	47	protected:
	48	csDiagram m_diagram;
	49	};
	50
	51	/*
	52	Do/Undo 30/7/98
	53
	54	1) We have a csCommandState, and in csDiagramCommand you have a list of
	55	these. This allows undo to work with several shapes at once.
	56
	57	2) Instead of storing info about each operation, e.g. separate pens, colours,
	58	etc., we simply use a copy of the shape.
	59	In csCommandState, we have a pointer to the actual shape in the canvas, m_currentShape.
	60	We also have wxShape* m_shapeState which stores the requested or previous state
	61	(depending on whether it's before the Do or after the Do.
	62
	63	- In Do: save a temp copy of the old m_currentShape (i.e. the state just before it's changed).
	64	Change the data pointed to by m_currentShape to the new attributes stored in m_shapeState.
	65	Now assign the temp copy to m_shapeState, for use in Undo.
	66
	67	wxShape* temp = m_currentShape->Copy(); // Take a copy of the current state
	68	m_currentShape->Set(m_shapeState); // Apply the new state (e.g. moving, changing colour etc.)
	69	delete m_shapeState; // Delete the previous 'old state'.
	70	m_shapeState = temp; // Remember the new 'old state'.
	71
	72	*/
	73
	74
	75	class csCommandState;
	76	class csDiagramCommand: public wxCommand
	77	{
	78	friend class csCommandState;
	79	public:
	80	// Multi-purpose constructor for creating, deleting shapes
	81	csDiagramCommand(const wxString& name, csDiagramDocument *doc,
	82	csCommandState* onlyState = NULL); // Allow for the common case of just one state to change
	83
	84	~csDiagramCommand();
	85
	86	bool Do();
	87	bool Undo();
	88
	89	// Add a state to the end of the list
	90	void AddState(csCommandState* state);
	91
	92	// Insert a state at the beginning of the list
	93	void InsertState(csCommandState* state);
	94
	95	// Schedule all lines connected to the states to be cut.
	96	void RemoveLines();
	97
	98	// Find the state that refers to this shape
	99	csCommandState* FindStateByShape(wxShape* shape);
	100
	101	wxList& GetStates() const { return (wxList&) m_states; }
	102
	103	protected:
	104	csDiagramDocument* m_doc;
	105	wxList m_states;
	106	};
	107
	108	class csCommandState: public wxObject
	109	{
	110	friend class csDiagramCommand;
	111	public:
	112	csCommandState(int cmd, wxShape* savedState, wxShape* shapeOnCanvas);
	113	~csCommandState();
	114
	115	bool Do();
	116	bool Undo();
	117
	118	inline void SetSavedState(wxShape *s) { m_savedState = s; }
	119	inline wxShape *GetSavedState() const { return m_savedState; }
	120
	121	inline void SetShapeOnCanvas(wxShape *s) { m_shapeOnCanvas = s; }
	122	inline wxShape *GetShapeOnCanvas() const { return m_shapeOnCanvas; }
	123	protected:
	124	wxShape* m_savedState; // Previous state, for restoring on Undo
	125	wxShape* m_shapeOnCanvas; // The actual shape on the canvas
	126	csDiagramDocument* m_doc;
	127	int m_cmd;
	128
	129	// These store the line ordering for the shapes at either end,
	130	// so an un-cut line can restore the ordering properly. Otherwise
	131	// it just adds the line at an arbitrary position.
	132	int m_linePositionFrom;
	133	int m_linePositionTo;
	134	};
	135
	136	#endif
	137	// _STUDIO_DOC_H_