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/***************************************************************************
* Copyright (C) 2003-2005 by David Saxton *
* david@bluehaze.org *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#ifndef FLOWPART_H
#define FLOWPART_H
#include "cnitem.h"
class ICNDocument;
class Node;
class FlowCode;
class FlowCodeDocument;
class FlowPart;
class FPNode;
class QPixmap;
class QSize;
typedef QValueList<FlowPart*> FlowPartList;
/**
All flow parts (eg 'CallSub', 'Read from Port' ,etc) should inherit from this class.
It provides basic functionality for creating commonly used nodes, as well as a virtual function
that you should reinherit for generating the assembly code.
@short Base class for all FlowParts
@author David Saxton
*/
class FlowPart : public CNItem
{
Q_OBJECT
public:
enum FlowSymbol
{
ps_process, // Process - Plain rectangular box
ps_call, // Call - Rectangular box with double vertical lines at either end
ps_io, // I/O - Slanter rectangular box
ps_round, // Start/End - Rounded rectangular box
ps_decision, // Decision - Diamond shape
ps_other // Custom shape, which is ignored by FlowPart
};
FlowPart( ICNDocument *icnDocument, bool newItem, const QString &id );
virtual ~FlowPart();
virtual void generateMicrobe( FlowCode */*code*/ ) = 0;
/**
* Set a preset "orientation" of this item - 0 through 7
*/
void setOrientation( uint orientation );
uint orientation() const { return m_orientation; }
/**
* The allowed orientations, as bit positions of 0 through 7
*/
uint allowedOrientations() const;
virtual ItemData itemData() const;
virtual void restoreFromItemData( const ItemData &itemData );
/**
* Sets the caption displayed in the flowpart, resizes the item as necessary
*/
virtual void setCaption( const QString &caption );
/**
* Traces the FlowCode document route from the nodes with the given internal
* ids, and returns the FlowPart to which:
* @li all the routes from the given nodes are eventually connected to downwards
* @li their exists one (possibly internally branched) route for each node to that part
* @param ids The list of internal ids of the nodes for the paths to begin from - if empty,
* all nodes internal nodes are used
* @param previousParts A list of parts in the calling tree. This avoids infinite recursion.
* @returns The first FlowPart satisfying these conditions, or NULL if no such part exists
*/
FlowPart* endPart( QStringList ids, FlowPartList *previousParts = 0l );
/**
* Handles the addition of a if-else statement to the given FlowCode. This will
* order the code as necessary, adding the branches in the appropriate places
* @param code The FlowCode where the if-else will be added
* @param case1Statement The statement (e.g. "PORTA.0 is high") used for the first case
* @param case2Statement The logically opposite statement (e.g. "PORTA.0 is low") (note
that only one of the two statements will be used.
* @param case1 The internal node id for case1
* @param case2 The internal node id for case2
*/
void handleIfElse( FlowCode *code, const QString &case1Statement, const QString &case2Statement,
const QString &case1, const QString &case2 );
/**
* Returns a pointer to the FlowPart that is connected to the node with the
* given internal id, or NULL if no such node / no connected part
*/
FlowPart* outputPart( const QString& internalNodeId );
/**
* Returns the FlowParts connected to the given node
* @see outputPart
*/
FlowPartList inputParts( const QString& id );
/**
* Returns a list of parts that are connected to *all* input parts
*/
FlowPartList inputParts();
/**
* Returns a list of parts that are connected to *all* output parts. Note that if
* the same FlowPart is connected to more than one output, that flowpart will appear
* in the FlowPartList the number of times it is connected.
*/
FlowPartList outputParts();
/**
* Draw the picture of the flowpart in the given orientation onto the pixmap
*/
void orientationPixmap( uint orientation, QPixmap & pm ) const;
virtual Variant * createProperty( const QString & id, Variant::Type::Value type );
public slots:
/**
* Called when variable name data for MicroSettings changes, and so our
* data needs updating
*/
void updateVarNames();
/**
* Called when a variable name has changed (from an entry box)
*/
void varNameChanged( QVariant newValue, QVariant oldValue );
/**
* Called when some of the FlowPart-specific variables (e.g. Pin or
* SevenSegment) requiring updating, such as when the PIC type changes
* or the list of Pin Maps changes.
*/
void slotUpdateFlowPartVariables();
protected:
virtual void updateAttachedPositioning();
/**
* Removes the node ids that shouldn't be used for finding the end part
*/
virtual void filterEndPartIDs( QStringList *ids ) { Q_UNUSED(ids); }
/**
* Normally just passes the paint request onto CNItem::drawShape,
* although in the case of some FlowSymbols (e.g. decision), it will handle
* the drawing itself
*/
virtual void drawShape( QPainter &p );
/**
* Returns the goto instruction that will goto the FlowPart that is connected
* to the node with the given internal id.
* For example, gotoCode("stdOutput") might return "goto delay__13"
*/
QString gotoCode( const QString& internalNodeId );
/**
* Creates a FPNode with an internal id of "stdinput".
* The node is positioned half-way along the top of the FlowPart,
* as determined by width(), height(), x() and y()
*/
void createStdInput();
/**
* Creates a FPNode with an internal id of "stdoutput".
* The node is positioned half-way along the bottom of the FlowPart,
* as determined by width(), height(), x() and y()
*/
void createStdOutput();
/**
* Creates a FPNode with an internal id of "altoutput".
* The node is positioned half-way along the right of the FlowPart,
* as determined by width(), height(), x() and y()
*/
void createAltOutput();
/**
* Initialises a symbol, by calling setItemPoints with the shape
*/
void initSymbol( FlowPart::FlowSymbol symbol, int width = 48 );
void initProcessSymbol() { initSymbol( FlowPart::ps_process ); }
void initCallSymbol() { initSymbol( FlowPart::ps_call ); }
void initIOSymbol() { initSymbol( FlowPart::ps_io ); }
void initRoundedRectSymbol() { initSymbol( FlowPart::ps_round ); }
void initDecisionSymbol() { initSymbol( FlowPart::ps_decision ); }
QString m_caption;
uint m_orientation;
FPNode *m_stdInput;
FPNode *m_stdOutput;
FPNode *m_altOutput;
QGuardedPtr<FlowCodeDocument> m_pFlowCodeDocument;
virtual void postResize();
void updateNodePositions();
private:
FlowSymbol m_flowSymbol;
};
typedef QValueList<FlowPart*> FlowPartList;
#endif
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