Added OGL to contrib

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6407 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

contrib/samples/ogl/studio/doc.h

@@ -0,0 +1,134 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        doc.h
+// Purpose:     Document classes
+// Author:      Julian Smart
+// Modified by:
+// Created:     12/07/98
+// RCS-ID:      $Id$
+// Copyright:   (c) Julian Smart
+// Licence:   	wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _STUDIO_DOC_H_
+#define _STUDIO_DOC_H_
+
+#ifdef __GNUG__
+// #pragma interface
+#endif
+
+#include <wx/docview.h>
+#include <wx/string.h>
+#include <wx/wxexpr.h>
+
+#include <wx/ogl/ogl.h>
+#include "shapes.h"
+
+/*
+ * A diagram document, which contains a diagram.
+ */
+ 
+class csDiagramDocument: public wxDocument
+{
+  DECLARE_DYNAMIC_CLASS(csDiagramDocument)
+public:
+  csDiagramDocument();
+  ~csDiagramDocument();
+
+  bool OnSaveDocument(const wxString& file);
+  bool OnOpenDocument(const wxString& file);
+  
+  inline wxDiagram *GetDiagram() { return &m_diagram; }
+  
+  bool OnCloseDocument();
+
+protected:
+  csDiagram         m_diagram;
+};
+
+/*
+ Do/Undo 30/7/98
+
+ 1) We have a csCommandState, and in csDiagramCommand you have a list of
+    these. This allows undo to work with several shapes at once.
+
+ 2) Instead of storing info about each operation, e.g. separate pens, colours,
+    etc., we simply use a copy of the shape.
+    In csCommandState, we have a pointer to the actual shape in the canvas, m_currentShape.
+    We also have wxShape* m_shapeState which stores the requested or previous state
+    (depending on whether it's before the Do or after the Do.
+
+    - In Do: save a temp copy of the old m_currentShape (i.e. the state just before it's changed).
+      Change the data pointed to by m_currentShape to the new attributes stored in m_shapeState.
+      Now assign the temp copy to m_shapeState, for use in Undo.
+
+      wxShape* temp = m_currentShape->Copy(); // Take a copy of the current state
+      m_currentShape->Set(m_shapeState);      // Apply the new state (e.g. moving, changing colour etc.)
+      delete m_shapeState;                    // Delete the previous 'old state'.
+      m_shapeState = temp;                    // Remember the new 'old state'.
+
+ */
+
+  
+class csCommandState;
+class csDiagramCommand: public wxCommand
+{
+    friend class csCommandState;
+ public:
+  // Multi-purpose constructor for creating, deleting shapes
+  csDiagramCommand(const wxString& name, csDiagramDocument *doc,
+    csCommandState* onlyState = NULL); // Allow for the common case of just one state to change
+
+  ~csDiagramCommand();
+
+  bool Do();
+  bool Undo();
+
+  // Add a state to the end of the list
+  void AddState(csCommandState* state);
+
+  // Insert a state at the beginning of the list
+  void InsertState(csCommandState* state);
+
+  // Schedule all lines connected to the states to be cut.
+  void RemoveLines();
+
+  // Find the state that refers to this shape
+  csCommandState* FindStateByShape(wxShape* shape);
+
+  wxList& GetStates() const { return (wxList&) m_states; }
+
+ protected:
+  csDiagramDocument*    m_doc;
+  wxList                m_states;
+};
+
+class csCommandState: public wxObject
+{
+    friend class csDiagramCommand;
+public:
+    csCommandState(int cmd, wxShape* savedState, wxShape* shapeOnCanvas);
+    ~csCommandState();
+
+    bool Do();
+    bool Undo();
+
+    inline void SetSavedState(wxShape *s) { m_savedState = s; }
+    inline wxShape *GetSavedState() const { return m_savedState; }
+
+    inline void SetShapeOnCanvas(wxShape *s) { m_shapeOnCanvas = s; }
+    inline wxShape *GetShapeOnCanvas() const { return m_shapeOnCanvas; }
+protected:
+    wxShape*                m_savedState;       // Previous state, for restoring on Undo
+    wxShape*                m_shapeOnCanvas;    // The actual shape on the canvas
+    csDiagramDocument*      m_doc;
+    int                     m_cmd;
+
+    // These store the line ordering for the shapes at either end,
+    // so an un-cut line can restore the ordering properly. Otherwise
+    // it just adds the line at an arbitrary position.
+    int                     m_linePositionFrom;
+    int                     m_linePositionTo;
+};
+
+#endif
+  // _STUDIO_DOC_H_