1fc25a89ac
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6407 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
135 lines
4.0 KiB
C++
135 lines
4.0 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: doc.h
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// Purpose: Document classes
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// Author: Julian Smart
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// Modified by:
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// Created: 12/07/98
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// RCS-ID: $Id$
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _STUDIO_DOC_H_
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#define _STUDIO_DOC_H_
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#ifdef __GNUG__
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// #pragma interface
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#endif
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#include <wx/docview.h>
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#include <wx/string.h>
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#include <wx/wxexpr.h>
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#include <wx/ogl/ogl.h>
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#include "shapes.h"
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/*
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* A diagram document, which contains a diagram.
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*/
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class csDiagramDocument: public wxDocument
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{
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DECLARE_DYNAMIC_CLASS(csDiagramDocument)
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public:
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csDiagramDocument();
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~csDiagramDocument();
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bool OnSaveDocument(const wxString& file);
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bool OnOpenDocument(const wxString& file);
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inline wxDiagram *GetDiagram() { return &m_diagram; }
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bool OnCloseDocument();
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protected:
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csDiagram m_diagram;
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};
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/*
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Do/Undo 30/7/98
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1) We have a csCommandState, and in csDiagramCommand you have a list of
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these. This allows undo to work with several shapes at once.
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2) Instead of storing info about each operation, e.g. separate pens, colours,
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etc., we simply use a copy of the shape.
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In csCommandState, we have a pointer to the actual shape in the canvas, m_currentShape.
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We also have wxShape* m_shapeState which stores the requested or previous state
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(depending on whether it's before the Do or after the Do.
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- In Do: save a temp copy of the old m_currentShape (i.e. the state just before it's changed).
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Change the data pointed to by m_currentShape to the new attributes stored in m_shapeState.
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Now assign the temp copy to m_shapeState, for use in Undo.
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wxShape* temp = m_currentShape->Copy(); // Take a copy of the current state
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m_currentShape->Set(m_shapeState); // Apply the new state (e.g. moving, changing colour etc.)
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delete m_shapeState; // Delete the previous 'old state'.
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m_shapeState = temp; // Remember the new 'old state'.
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*/
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class csCommandState;
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class csDiagramCommand: public wxCommand
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{
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friend class csCommandState;
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public:
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// Multi-purpose constructor for creating, deleting shapes
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csDiagramCommand(const wxString& name, csDiagramDocument *doc,
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csCommandState* onlyState = NULL); // Allow for the common case of just one state to change
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~csDiagramCommand();
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bool Do();
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bool Undo();
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// Add a state to the end of the list
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void AddState(csCommandState* state);
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// Insert a state at the beginning of the list
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void InsertState(csCommandState* state);
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// Schedule all lines connected to the states to be cut.
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void RemoveLines();
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// Find the state that refers to this shape
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csCommandState* FindStateByShape(wxShape* shape);
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wxList& GetStates() const { return (wxList&) m_states; }
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protected:
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csDiagramDocument* m_doc;
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wxList m_states;
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};
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class csCommandState: public wxObject
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{
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friend class csDiagramCommand;
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public:
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csCommandState(int cmd, wxShape* savedState, wxShape* shapeOnCanvas);
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~csCommandState();
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bool Do();
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bool Undo();
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inline void SetSavedState(wxShape *s) { m_savedState = s; }
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inline wxShape *GetSavedState() const { return m_savedState; }
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inline void SetShapeOnCanvas(wxShape *s) { m_shapeOnCanvas = s; }
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inline wxShape *GetShapeOnCanvas() const { return m_shapeOnCanvas; }
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protected:
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wxShape* m_savedState; // Previous state, for restoring on Undo
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wxShape* m_shapeOnCanvas; // The actual shape on the canvas
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csDiagramDocument* m_doc;
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int m_cmd;
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// These store the line ordering for the shapes at either end,
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// so an un-cut line can restore the ordering properly. Otherwise
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// it just adds the line at an arbitrary position.
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int m_linePositionFrom;
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int m_linePositionTo;
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};
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#endif
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// _STUDIO_DOC_H_
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