]> git.saurik.com Git - wxWidgets.git/blame_incremental - contrib/samples/ogl/studio/doc.h
The Return of WM Size Hints Part IV.
[wxWidgets.git] / contrib / samples / ogl / studio / doc.h
... / ...
CommitLineData
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 <wx/ogl/ogl.h>
24#include "shapes.h"
25
26/*
27 * A diagram document, which contains a diagram.
28 */
29
30class csDiagramDocument: public wxDocument
31{
32 DECLARE_DYNAMIC_CLASS(csDiagramDocument)
33public:
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
44protected:
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
72class csCommandState;
73class 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
105class csCommandState: public wxObject
106{
107 friend class csDiagramCommand;
108public:
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; }
120protected:
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_