initial checkin of C++ port (in progress)

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@2 0fc631ac-6414-0410-93d0-97cfa31319b6

src/data/action/symbol_part.hpp

@@ -0,0 +1,158 @@
+//+----------------------------------------------------------------------------+
+//| Description:  Magic Set Editor - Program to make Magic (tm) cards          |
+//| Copyright:    (C) 2001 - 2006 Twan van Laarhoven                           |
+//| License:      GNU General Public License 2 or later (see file COPYING)     |
+//+----------------------------------------------------------------------------+
+
+#ifndef HEADER_DATA_ACTION_SYMBOL_PART
+#define HEADER_DATA_ACTION_SYMBOL_PART
+
+/** @file data/action/symbol_part.hpp
+ *
+ *  Actions operating on the insides of SymbolParts (ControlPoints and the like).
+ */
+
+// ----------------------------------------------------------------------------- : Includes
+
+#include <util/prec.hpp>
+#include <util/action_stack.hpp>
+#include <data/symbol.hpp>
+
+// ----------------------------------------------------------------------------- : Utility
+
+/// Constrain a vector to be horizontal, vertical or diagonal
+/// If constraint==false does nothing
+Vector2D constrainVector(const Vector2D& v, bool constrain = true, bool onlyDiagonal = false);
+
+// ----------------------------------------------------------------------------- : Move control point
+
+/// Moving a control point in a symbol
+class ControlPointMoveAction : public Action {
+  public:
+	ControlPointMoveAction(const set<ControlPointP>& points);
+	
+	virtual String getName(bool toUndo) const;
+	virtual void perform(bool toUndo);
+	
+	/// Update this action to move some more
+	void move(const Vector2D& delta);
+	
+  private:
+	set<ControlPointP> points;  //^ Points to move
+	vector<Vector2D> oldValues; //^ Their old positions
+	Vector2D delta;				//^ Amount we moved
+  public:
+	bool constrain;				//^ Constrain movement?
+};
+
+// ----------------------------------------------------------------------------- : Move handle
+
+/// Moving a handle(before/after) of a control point in a symbol
+class HandleMoveAction : public Action {
+  public:
+	HandleMoveAction(const SelectedHandle& handle);
+	
+	virtual String getName(bool toUndo) const;
+	virtual void perform(bool toUndo);
+	
+	/// Update this action to move some more
+	void move(const Vector2D& delta);
+	
+  private:
+	SelectedHandle handle;		//^ The handle to move
+	Vector2D oldHandle;			//^ Old value of this handle
+	Vector2D oldOther;			//^ Old value of other handle, needed for contraints
+	Vector2D delta;				//^ Amount we moved
+  public:
+	bool constrain;				//^ Constrain movement?
+};
+
+// ----------------------------------------------------------------------------- : Segment mode
+
+/// Utility class to update a control point
+class ControlPointUpdate {
+  public:
+	ControlPointUpdate(const ControlPointP& pnt);
+	
+	/// Perform or undo an update on this control point
+	void perform();
+	
+	/// Other value that is swapped with the current one.
+	/// Should be changed to make perform have an effect
+	ControlPoint other;
+	/// The point that is to be changed, should not be updated before perform()
+	ControlPointP point;
+};
+
+
+/// Changing a line to a curve and vice versa
+class SegmentModeAction : public Action {
+  public:
+	SegmentModeAction(const ControlPointP& p1, const ControlPointP& p2, SegmentMode mode);
+	
+	virtual String getName(bool toUndo) const;
+	virtual void perform(bool toUndo);
+	
+  protected:
+	ControlPointUpdate point1, point2;
+};
+
+// ----------------------------------------------------------------------------- : Locking mode
+
+/// Locking a control point
+class LockModeAction : public Action {
+  public:
+	LockModeAction(const ControlPointP& p, LockMode mode);
+	
+	virtual String getName(bool toUndo) const;
+	virtual void perform(bool toUndo);
+	
+  private:
+	ControlPointUpdate point;	//^ The affected point
+};
+
+// ----------------------------------------------------------------------------- : Move curve
+
+/// Dragging a curve; also coverts lines to curves
+/** Inherits from SegmentModeAction because it also has that effect
+ */
+class CurveDragAction : public SegmentModeAction {
+  public:
+	CurveDragAction(const ControlPointP& point1, const ControlPointP& point2);
+	
+	virtual String getName(bool toUndo) const;
+	virtual void perform(bool toUndo);
+		
+	// Move the curve by this much, it is grabbed at time t
+	void move(const Vector2D& delta, double t);
+};
+
+// ----------------------------------------------------------------------------- : Add control point
+
+/// Insert a new point in a symbol part
+class ControlPointAddAction : public Action {
+  public:
+	/// Insert a new point in part, after position insertAfter_, at the time t on the segment
+	ControlPointAddAction(const SymbolPartP& part, UInt insertAfter, double t);
+	
+	virtual String getName(bool toUndo) const;
+	virtual void perform(bool toUndo);
+	
+	inline ControlPointP getNewPoint() const { return newPoint; }
+	
+  private:
+	SymbolPartP   part;					//^ SymbolPart we are in
+	ControlPointP newPoint;				//^ The point to insert
+	UInt          insertAfter;			//^ Insert after index .. in the array
+	ControlPointUpdate point1, point2;	//^ Update the points around the new point
+};
+
+// ----------------------------------------------------------------------------- : Remove control point
+
+/// Action that removes any number of points from a symbol part
+/// TODO: If less then 3 points are left removes the entire part!
+Action* controlPointRemoveAction(const SymbolPartP& part, const set<ControlPointP>& toDelete);
+
+
+// ----------------------------------------------------------------------------- : EOF
+#endif