rs_entity.cpp

qcad2.05可用于windows和linux的源码

/**
 * Sets a variable value for the parent graphic object.
 *
 * @param key Variable name (e.g. "$DIMASZ")
 * @param val Default value
 */
void RS_Entity::addGraphicVariable(const RS_String& key, double val, int code) {
    RS_Graphic* graphic = getGraphic();
    if (graphic!=NULL) {
        graphic->addVariable(key, val, code);
    }
}



/**
 * Sets a variable value for the parent graphic object.
 *
 * @param key Variable name (e.g. "$DIMASZ")
 * @param val Default value
 */
void RS_Entity::addGraphicVariable(const RS_String& key, int val, int code) {
    RS_Graphic* graphic = getGraphic();
    if (graphic!=NULL) {
        graphic->addVariable(key, val, code);
    }
}



/**
 * Sets a variable value for the parent graphic object.
 *
 * @param key Variable name (e.g. "$DIMASZ")
 * @param val Default value
 */
void RS_Entity::addGraphicVariable(const RS_String& key,
                                   const RS_String& val, int code) {
    RS_Graphic* graphic = getGraphic();
    if (graphic!=NULL) {
        graphic->addVariable(key, val, code);
    }
}



/**
 * A safe member function to return the given variable.
 *
 * @param key Variable name (e.g. "$DIMASZ")
 * @param def Default value
 *
 * @return value of variable or default value if the given variable
 *    doesn't exist.
 */
double RS_Entity::getGraphicVariableDouble(const RS_String& key, double def) {
    RS_Graphic* graphic = getGraphic();
    double ret=def;
    if (graphic!=NULL) {
        ret = graphic->getVariableDouble(key, def);
    }
    return ret;
}



/**
 * A safe member function to return the given variable.
 *
 * @param key Variable name (e.g. "$DIMASZ")
 * @param def Default value
 *
 * @return value of variable or default value if the given variable
 *    doesn't exist.
 */
int RS_Entity::getGraphicVariableInt(const RS_String& key, int def) {
    RS_Graphic* graphic = getGraphic();
    int ret=def;
    if (graphic!=NULL) {
        ret = graphic->getVariableInt(key, def);
    }
    return ret;
}



/**
 * A safe member function to return the given variable.
 *
 * @param key Variable name (e.g. "$DIMASZ")
 * @param def Default value
 *
 * @return value of variable or default value if the given variable
 *    doesn't exist.
 */
RS_String RS_Entity::getGraphicVariableString(const RS_String& key,
        const RS_String&  def) {
    RS_Graphic* graphic = getGraphic();
    RS_String ret=def;
    if (graphic!=NULL) {
        ret = graphic->getVariableString(key, def);
    }
    return ret;
}



/**
 * @return The unit the parent graphic works on or None if there's no
 * parent graphic.
 */
RS2::Unit RS_Entity::getGraphicUnit() {
    RS_Graphic* graphic = getGraphic();
    RS2::Unit ret = RS2::None;
    if (graphic!=NULL) {
        ret = graphic->getUnit();
    }
    return ret;
}



/**
 * Returns a pointer to the layer this entity is on or NULL.
 *
 * @para resolve true: if the layer is ByBlock, the layer of the 
 *               block this entity is in is returned. 
 *               false: the layer of the entity is returned.
 *
 * @return pointer to the layer this entity is on. If the layer
 * is set to NULL the layer of the next parent that is not on
 * layer NULL is returned. If all parents are on layer NULL, NULL
 * is returned.
 */
RS_Layer* RS_Entity::getLayer(bool resolve) const {
    if (resolve) {
        // we have no layer but a parent that might have one.
        // return parent's layer instead:
        if (layer==NULL /*|| layer->getName()=="ByBlock"*/) {
            if (parent!=NULL) {
                return parent->getLayer(true);
            } else {
                return NULL;
            }
        }
    }

    // return our layer. might still be NULL:
    return layer;
}



/**
 * Sets the layer of this entity to the layer with the given name 
 */
void RS_Entity::setLayer(const RS_String& name) {
    RS_Graphic* graphic = getGraphic();
    if (graphic!=NULL) {
        layer = graphic->findLayer(name);
    } else {
        layer = NULL;
    }
}



/**
 * Sets the layer of this entity to the layer given.
 */
void RS_Entity::setLayer(RS_Layer* l) {
    layer = l;
}



/**
 * Sets the layer of this entity to the current layer of
 * the graphic this entity is in. If this entity (and none
 * of its parents) are in a graphic the layer is set to NULL.
 */
void RS_Entity::setLayerToActive() {
    RS_Graphic* graphic = getGraphic();

    if (graphic!=NULL) {
        layer = graphic->getActiveLayer();
    } else {
        layer = NULL;
    }
}



/**
 * Gets the pen needed to draw this entity.
 * The attributes can also come from the layer this entity is on
 * if the flags are set accordingly.
 * 
 * @param resolve true: Resolve the pen to a drawable pen (e.g. the pen 
 *         from the layer or parent..)
 *         false: Don't resolve and return a pen or ByLayer, ByBlock, ...
 *
 * @return Pen for this entity. 
 */
RS_Pen RS_Entity::getPen(bool resolve) const {

    if (!resolve) {
        return pen;
    } else {

        RS_Pen p = pen;
        RS_Layer* l = getLayer(true);

        // use parental attributes (e.g. vertex of a polyline, block
        // entities when they are drawn in block documents):
        if (!p.isValid() || p.getColor().isByBlock()) {
            if (parent!=NULL) {
                p = parent->getPen();
            }
        }
        // use layer attributes:
        else if (l!=NULL) {

            // layer is "ByBlock":
            /*if (layer->getName()=="ByBlock" && getBlockOrInsert()!=NULL) {
                p = getBlockOrInsert()->getPen();
        } else {*/

            // use layer's color:
            if (p.getColor().isByLayer()) {
                p.setColor(l->getPen().getColor());
            }

            // use layer's width:
            if (p.getWidth()==RS2::WidthByLayer) {
                p.setWidth(l->getPen().getWidth());
            }

            // use layer's linetype:
            if (p.getLineType()==RS2::LineByLayer) {
                p.setLineType(l->getPen().getLineType());
            }
            //}
        }

        return p;
    }
}



/**
 * Sets the pen of this entity to the current pen of
 * the graphic this entity is in. If this entity (and none
 * of its parents) are in a graphic the pen is not changed.
 */
void RS_Entity::setPenToActive() {
    RS_Document* doc = getDocument();
    if (doc!=NULL) {
        pen = doc->getActivePen();
    } else {
        //RS_DEBUG->print(RS_Debug::D_WARNING, "RS_Entity::setPenToActive(): "
        //                "No document / active pen linked to this entity.");
    }
    //else {
    //   pen = RS_Pen();
    //}
}



/**
 * Implementations must stretch the given range of the entity 
 * by the given offset. This default implementation moves the 
 * whole entity if it is completely inside the given range.
 */
void RS_Entity::stretch(RS_Vector firstCorner,
                        RS_Vector secondCorner,
                        RS_Vector offset) {

    //e->calculateBorders();
    if (getMin().isInWindow(firstCorner, secondCorner) &&
            getMax().isInWindow(firstCorner, secondCorner)) {

        move(offset);
    }
}



/**
 * @return Factor for scaling the line styles considering the current 
 * paper scaling and the fact that styles are stored in Millimeter.
 */
double RS_Entity::getStyleFactor(RS_GraphicView* view) {
    double styleFactor = 1.0;

    if (view!=NULL) {
        if (view->isPrinting()==false && view->isDraftMode()) {
            styleFactor = 1.0/view->getFactor().x;
        } else {
            //styleFactor = getStyleFactor();
            // the factor caused by the unit:
            RS2::Unit unit = RS2::None;
            RS_Graphic* g = getGraphic();
            if (g!=NULL) {
                unit = g->getUnit();
                //double scale = g->getPaperScale();
                styleFactor = RS_Units::convert(1.0, RS2::Millimeter, unit);
                // / scale;
            }

            // the factor caused by the line width:
            if (((int)getPen(true).getWidth())>0) {
                styleFactor *= ((double)getPen(true).getWidth()/100.0);
            } else if (((int)getPen(true).getWidth())==0) {
                styleFactor *= 0.01;
            }
        }

        if (view->isPrinting() || view->isPrintPreview() || view->isDraftMode()==false) {
            RS_Graphic* graphic = getGraphic();
            if (graphic!=NULL && graphic->getPaperScale()>1.0e-6) {
                styleFactor /= graphic->getPaperScale();
            }
        }
    }

	//RS_DEBUG->print("stylefactor: %f", styleFactor);
	//RS_DEBUG->print("viewfactor: %f", view->getFactor().x);

	if (styleFactor*view->getFactor().x<0.2) {
		styleFactor = -1.0;
	}

    return styleFactor;
}


/**
 * @return User defined variable connected to this entity.
 */
RS_String* RS_Entity::getUserDefVar(RS_String key) {
    return (this->varList.find(key));
}


/**
 * Add a user defined variable to this entity.
 */
void RS_Entity::setUserDefVar(RS_String key, RS_String val) {
    varList.insert(key, new RS_String(val));
}



/**
 * Deletes the given user defined variable.
 */
void RS_Entity::delUserDefVar(RS_String key) {
    varList.remove(key);
}



/**
 * @return A list of all keys connected to this entity.
 */
RS_StringList RS_Entity::getAllKeys() {
    RS_StringList keys;
    RS_DictIterator<RS_String> it(varList);
    for( ; it.current(); ++it )
        keys.append(it.currentKey());

    return keys;
}


/**
 * Dumps the elements data to stdout.
 */
std::ostream& operator << (std::ostream& os, RS_Entity& e) {
    //os << "Warning: Virtual entity!\n";
    //return os;

    os << " {Entity id: " << e.id;
    if (e.parent!=NULL) {
        os << " | parent id: " << e.parent->getId() << "\n";
    } else {
        os << " | no parent\n";
    }

    os << " flags: " << (e.getFlag(RS2::FlagVisible) ? "RS2::FlagVisible" : "");
    os << (e.getFlag(RS2::FlagUndone) ? " RS2::FlagUndone" : "");
    os << (e.getFlag(RS2::FlagSelected) ? " RS2::FlagSelected" : "");
    os << "\n";

    if (e.layer==NULL) {
        os << " layer: NULL ";
    } else {
        os << " layer: " << e.layer->getName().latin1() << " ";
        os << " layer address: " << (int)(e.layer) << " ";
    }

    os << e.pen << "\n";

    os << "variable list:\n";
    RS_DictIterator<RS_String> it(e.varList); // See QDictIterator
    for( ; it.current(); ++it ) {
        os << it.currentKey() << ": " << *it.current() << ", ";
    }

    // There should be a better way then this...
    switch(e.rtti()) {
    case RS2::EntityPoint:
        os << (RS_Point&)e;
        break;

    case RS2::EntityLine:
        os << (RS_Line&)e;
        break;

    case RS2::EntityPolyline:
        os << (RS_Polyline&)e;
        break;

    case RS2::EntityArc:
        os << (RS_Arc&)e;
        break;

    case RS2::EntityCircle:
        os << (RS_Circle&)e;
        break;

    case RS2::EntityEllipse:
        os << (RS_Ellipse&)e;
        break;

    case RS2::EntityInsert:
        os << (RS_Insert&)e;
        break;

    case RS2::EntityText:
        os << (RS_Text&)e;
        break;

    default:
        os << "Unknown Entity";
        break;
    }
    os << "}\n\n";

    return os;
}