1fc25a89ac
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6407 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
297 lines
12 KiB
C++
297 lines
12 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: lines.h
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// Purpose: wxLineShape
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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 _OGL_LINES_H_
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#define _OGL_LINES_H_
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#ifdef __GNUG__
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#pragma interface "lines.h"
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#endif
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class wxLabelShape;
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class wxPseudoMetaFile;
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class wxLineControlPoint;
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/*
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* Arcs with multiple arrowheads
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*
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*/
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// Types of arrowhead
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// (i) Built-in
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#define ARROW_HOLLOW_CIRCLE 1
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#define ARROW_FILLED_CIRCLE 2
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#define ARROW_ARROW 3
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#define ARROW_SINGLE_OBLIQUE 4
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#define ARROW_DOUBLE_OBLIQUE 5
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// (ii) Custom
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#define ARROW_METAFILE 20
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// Position of arrow on line
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#define ARROW_POSITION_START 0
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#define ARROW_POSITION_END 1
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#define ARROW_POSITION_MIDDLE 2
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// Line alignment flags
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// Vertical by default
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#define LINE_ALIGNMENT_HORIZ 1
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#define LINE_ALIGNMENT_VERT 0
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#define LINE_ALIGNMENT_TO_NEXT_HANDLE 2
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#define LINE_ALIGNMENT_NONE 0
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class wxArrowHead: public wxObject
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{
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DECLARE_DYNAMIC_CLASS(wxArrowHead)
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public:
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wxArrowHead(WXTYPE type = 0, int end = 0, double size = 0.0, double dist = 0.0, const wxString& name = "", wxPseudoMetaFile *mf = NULL,
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long arrowId = -1);
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~wxArrowHead();
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wxArrowHead(wxArrowHead& toCopy);
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inline WXTYPE _GetType() const { return m_arrowType; }
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inline int GetPosition() const { return m_arrowEnd; }
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inline void SetPosition(int pos) { m_arrowEnd = pos; }
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inline double GetXOffset() const { return m_xOffset; }
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inline double GetYOffset() const { return m_yOffset; }
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inline double GetSpacing() const { return m_spacing; }
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inline double GetSize() const { return m_arrowSize; }
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inline wxString GetName() const { return m_arrowName; }
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inline void SetXOffset(double x) { m_xOffset = x; }
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inline void SetYOffset(double y) { m_yOffset = y; }
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inline wxPseudoMetaFile *GetMetaFile() const { return m_metaFile; }
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inline long GetId() const { return m_id; }
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inline int GetArrowEnd() const { return m_arrowEnd; }
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inline double GetArrowSize() const { return m_arrowSize; }
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void SetSize(double size);
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inline void SetSpacing(double sp) { m_spacing = sp; }
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protected:
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WXTYPE m_arrowType;
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int m_arrowEnd; // Position on line
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double m_xOffset; // Distance from arc start or end, w.r.t. point on arrowhead
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// nearest start or end. If zero, use default spacing.
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double m_yOffset; // vertical offset (w.r.t. a horizontal line). Normally zero.
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double m_spacing; // Spacing from the last arrowhead
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double m_arrowSize; // Length of arrowhead
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wxString m_arrowName; // Name of arrow
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bool m_saveToFile; // TRUE if we want to save custom arrowheads to file.
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wxPseudoMetaFile* m_metaFile; // Pseudo metafile if this is a custom arrowhead
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long m_id; // identifier
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};
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// Line object
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class wxLabelShape;
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class wxLineShape: public wxShape
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{
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DECLARE_DYNAMIC_CLASS(wxLineShape)
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public:
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wxLineShape();
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~wxLineShape();
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// Called when a connected object has moved, to move the link to
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// correct position
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// moveControlPoints must be disabled when a control point is being
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// dragged.
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void OnMoveLink(wxDC& dc, bool moveControlPoints = TRUE);
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bool OnMovePre(wxDC& dc, double x, double y, double old_x, double old_y, bool display = TRUE);
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void OnDraw(wxDC& dc);
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void OnDrawContents(wxDC& dc);
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void OnDrawControlPoints(wxDC& dc);
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void OnEraseControlPoints(wxDC& dc);
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void OnErase(wxDC& dc);
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virtual bool OnMoveControlPoint(int WXUNUSED(which), double WXUNUSED(x), double WXUNUSED(y)) { return FALSE; }
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virtual bool OnMoveMiddleControlPoint(wxDC& dc, wxLineControlPoint* lpt, const wxRealPoint& pt);
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virtual bool OnLabelMovePre(wxDC& dc, wxLabelShape* labelShape, double x, double y, double old_x, double old_y, bool display);
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void OnDrawOutline(wxDC& dc, double x, double y, double w, double h);
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void GetBoundingBoxMin(double *w, double *h);
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void FormatText(wxDC& dc, const wxString& s, int regionId = 0);
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virtual void SetEnds(double x1, double y1, double x2, double y2);
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virtual void GetEnds(double *x1, double *y1, double *x2, double *y2);
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inline virtual wxShape *GetFrom() { return m_from; }
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inline virtual wxShape *GetTo() { return m_to; }
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inline virtual int GetAttachmentFrom() { return m_attachmentFrom; }
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inline virtual int GetAttachmentTo() { return m_attachmentTo; }
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virtual void SetFrom(wxShape *object);
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virtual void SetTo(wxShape *object);
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virtual void DrawArrows(wxDC& dc);
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// Finds the x, y points at the two ends of the line.
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// This function can be used by e.g. line-routing routines to
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// get the actual points on the two node images where the lines will be drawn
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// to/from.
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void FindLineEndPoints(double *fromX, double *fromY, double *toX, double *toY);
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// Format one region at this position
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void DrawRegion(wxDC& dc, wxShapeRegion *region, double x, double y);
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// Erase one region at this position
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void EraseRegion(wxDC& dc, wxShapeRegion *region, double x, double y);
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// Get the reference point for a label. Region x and y
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// are offsets from this.
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// position is 0 (middle), 1 (start), 2 (end)
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void GetLabelPosition(int position, double *x, double *y);
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// Can override this to create a different class of label shape
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virtual wxLabelShape* OnCreateLabelShape(wxLineShape *parent = NULL, wxShapeRegion *region = NULL, double w = 0.0, double h = 0.0);
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// Straighten verticals and horizontals
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virtual void Straighten(wxDC* dc = NULL);
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// Not implemented
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inline void SetMaintainStraightLines(bool flag) { m_maintainStraightLines = flag; }
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inline bool GetMaintainStraightLines() const { return m_maintainStraightLines; }
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// Make handle control points
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void MakeControlPoints();
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void ResetControlPoints();
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// Make a given number of control points
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virtual void MakeLineControlPoints(int n);
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virtual wxNode *InsertLineControlPoint(wxDC* dc);
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virtual bool DeleteLineControlPoint();
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virtual void Initialise();
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inline wxList *GetLineControlPoints() { return m_lineControlPoints; }
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// Override dragging behaviour - don't want to be able to drag lines!
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void OnDragLeft(bool draw, double x, double y, int keys=0, int attachment = 0);
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void OnBeginDragLeft(double x, double y, int keys=0, int attachment = 0);
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void OnEndDragLeft(double x, double y, int keys=0, int attachment = 0);
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// Control points ('handles') redirect control to the actual shape, to make it easier
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// to override sizing behaviour.
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virtual void OnSizingDragLeft(wxControlPoint* pt, bool draw, double x, double y, int keys=0, int attachment = 0);
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virtual void OnSizingBeginDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
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virtual void OnSizingEndDragLeft(wxControlPoint* pt, double x, double y, int keys=0, int attachment = 0);
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// Override select, to create/delete temporary label-moving objects
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void Select(bool select = TRUE, wxDC* dc = NULL);
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// Set to spline (TRUE) or line (FALSE)
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inline void SetSpline(bool spl) { m_isSpline = spl; }
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inline bool IsSpline() const { return m_isSpline; }
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void Unlink();
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void SetAttachments(int from_attach, int to_attach);
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inline void SetAttachmentFrom(int attach) { m_attachmentFrom = attach; }
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inline void SetAttachmentTo(int attach) { m_attachmentTo = attach; }
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bool HitTest(double x, double y, int *attachment, double *distance);
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#ifdef PROLOGIO
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// I/O
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virtual void WriteAttributes(wxExpr *clause);
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virtual void ReadAttributes(wxExpr *clause);
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#endif
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virtual void FindNth(wxShape *image, int *nth, int *no_arcs, bool incoming);
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// Find which position we're talking about at this (x, y).
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// Returns ARROW_POSITION_START, ARROW_POSITION_MIDDLE, ARROW_POSITION_END
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int FindLinePosition(double x, double y);
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// This is really to distinguish between lines and other images.
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// For lines, want to pass drag to canvas, since lines tend to prevent
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// dragging on a canvas (they get in the way.)
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virtual bool Draggable() const { return FALSE; }
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// Does the copying for this object
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void Copy(wxShape& copy);
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// Add an arrowhead.
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wxArrowHead *AddArrow(WXTYPE type, int end = ARROW_POSITION_END,
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double arrowSize = 10.0, double xOffset = 0.0, const wxString& name = "",
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wxPseudoMetaFile *mf = NULL, long arrowId = -1);
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// Add an arrowhead in the position indicated by the reference
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// list of arrowheads, which contains all legal arrowheads for this
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// line, in the correct order.
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// E.g. reference list: a b c d e
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// Current line list: a d
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// Add c, then line list is: a c d
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// If no legal arrowhead position, return FALSE.
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// Assume reference list is for one end only, since it potentially defines
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// the ordering for any one of the 3 positions. So we don't check
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// the reference list for arrowhead position.
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bool AddArrowOrdered(wxArrowHead *arrow, wxList& referenceList, int end);
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// Delete arrowhead(s)
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void ClearArrowsAtPosition(int end = -1);
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bool ClearArrow(const wxString& name);
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wxArrowHead *FindArrowHead(int position, const wxString& name);
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wxArrowHead *FindArrowHead(long arrowId);
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bool DeleteArrowHead(int position, const wxString& name);
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bool DeleteArrowHead(long arrowId);
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void DrawArrow(wxDC& dc, wxArrowHead *arrow, double xOffset, bool proportionalOffset);
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inline void SetIgnoreOffsets(bool ignore) { m_ignoreArrowOffsets = ignore; }
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inline wxList& GetArrows() const { return (wxList&) m_arcArrows; }
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// Find horizontal width for drawing a line with
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// arrows in minimum space. Assume arrows at
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// END only
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double FindMinimumWidth();
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// Set alignment flags. ALIGNMENT NOT IMPLEMENTED.
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void SetAlignmentOrientation(bool isEnd, bool isHoriz);
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void SetAlignmentType(bool isEnd, int alignType);
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bool GetAlignmentOrientation(bool isEnd);
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int GetAlignmentType(bool isEnd);
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// Find next control point in line after the start/end point
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// (depending on whether the node object is at start or end)
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wxRealPoint *GetNextControlPoint(wxShape *nodeObject);
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inline bool IsEnd(wxShape *nodeObject) const { return (m_to == nodeObject); }
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private:
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bool m_erasing; // flag to say whether we're erasing or drawing
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// this line (really so metafiles can draw a
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// blank rectangle)
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bool m_ignoreArrowOffsets; // Don't always want to draw arrowhead offsets
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// because they may not work on tool palettes (for example)
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bool m_isSpline;
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bool m_maintainStraightLines;
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protected:
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// Temporary list of line segment orientations
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// so we know what direction the line is supposed to be dog-legging
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// in. The values are integer: 0 for vertical, 1 for horizontal.
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wxList m_lineOrientations;
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// Temporary pointers for start, middle and end label editing objects
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// (active only when the line is selected)
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wxLabelShape* m_labelObjects[3];
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// These define the segmented line - not to be confused with temporary control
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// points which appear when object is selected (although in this case they'll
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// probably be the same)
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wxList* m_lineControlPoints;
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double m_arrowSpacing; // Separation between adjacent arrows
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wxShape* m_to;
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wxShape* m_from;
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int m_attachmentTo; // Attachment point at one end
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int m_attachmentFrom; // Attachment point at other end
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// Alignment flags
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int m_alignmentStart;
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int m_alignmentEnd;
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wxList m_arcArrows;
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};
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#endif
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// _OGL_LINES_H_
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