p_rect.cpp

Go to the documentation of this file.

/*
 * p_rect.cpp
 *
 * Copyright (C) 2007,2009  Thomas A. Vaughan
 * All rights reserved.
 *
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the <organization> nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THOMAS A. VAUGHAN ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THOMAS A. VAUGHAN BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *
 * Implementation of a rect primitive.
 * (p_ stands for Primitive)
 */

// includes --------------------------------------------------------------------
#include "vgfx.h"             // all primitives should include this header first
#include "drawer.h"

#include "common/wave_ex.h"
#include "perf/perf.h"
#include "util/parsing.h"



namespace vgfx {

////////////////////////////////////////////////////////////////////////////////
//
//      static helper methods
//
////////////////////////////////////////////////////////////////////////////////

class Rectangle : public Primitive {
public:
        ~Rectangle(void) throw() { }

        // public class methods ------------------------------------------------
        void initialize(IN const init_rect_t& init);

        // vgfx::Primitive class interface methods -----------------------------
        virtual const char * getType(void) const throw() { return "rect"; }
        virtual void persist(OUT std::ostream& stream) const;
        virtual bool doesContainerExist(IN const VecString& path) const;
        virtual bool canCreateContainer(IN const VecString& path) const;
        virtual void removeContainer(IN const VecString& path);
        virtual void getContainerDictionary(IN const VecString& path,
                                OUT dictionary_t& data) const;
        virtual void setContainerDictionary(IN const VecString& path,
                                IN const dictionary_t& data);
        virtual void recalcBoundingRect(IN const char * tag_path,
                                IN Drawer * drawer,
                                IN const xform_2d_t& T) { }
        virtual bool getBoundingRect(OUT rect_t& r) const throw();
        virtual void draw(IN Drawer * drawer,
                                IN const rect_t& r_cm,
                                IN const xform_2d_t& T);

private:
        rect_t          m_rect;         // our actual coordinates
        bool            m_fill;
};



////////////////////////////////////////////////////////////////////////////////
//
//      Rectangle -- public class methods
//
////////////////////////////////////////////////////////////////////////////////

void
Rectangle::initialize
(
IN const init_rect_t& init
)
{
        this->setID(init.id.c_str());
        m_rect = init.rect;
        m_fill = init.fill;
}



bool
Rectangle::getBoundingRect
(
OUT rect_t& r
)
const throw()
{
        r = m_rect;
        return true;
}



#define WRITE_R_FIELD(q) { if (m_rect.q) { stream << " " << #q << " " << m_rect.q; } }

void
Rectangle::persist
(
OUT std::ostream& stream
)
const
{
        stream << "rect id " << this->getID();
        WRITE_R_FIELD(left)
        WRITE_R_FIELD(top)
        WRITE_R_FIELD(right)
        WRITE_R_FIELD(bottom)

        if (m_fill) {
                stream << " fill true";
        }
}



bool
Rectangle::doesContainerExist
(
IN const VecString& path
)
const
{
        if (path.size() > 0) {
                return false;
        }
        return true;
}


bool
Rectangle::canCreateContainer
(
IN const VecString& path
)
const
{
        return false;
}


void
Rectangle::removeContainer
(
IN const VecString& path
)
{
        WAVE_EX(wex);
        wex << "rectangles have no removable containers";
}



#define ADD_R_VALUE(q) { data[ #q ] = getStringValue( m_rect.q ); }

void
Rectangle::getContainerDictionary
(
IN const VecString& path,
OUT dictionary_t& data
)
const
{
        if (path.size() > 0) {
                WAVE_EX(wex);
                wex << "Rectangles do not support subcontainers";
        }

        data.clear();
        ADD_R_VALUE(left)
        ADD_R_VALUE(top)
        ADD_R_VALUE(right)
        ADD_R_VALUE(bottom)
}



#define CHECK_R_VALUE(q) { if (!strcmp(name, #q )) { m_rect.q = atof(value); continue; } }

void
Rectangle::setContainerDictionary
(
IN const VecString& path,
IN const dictionary_t& data
)
{
        if (path.size() > 0) {
                WAVE_EX(wex);
                wex << "Rectangles do not support subcontainers";
        }

        for (dictionary_t::const_iterator i = data.begin(); i != data.end();
             ++i) {
                const char * name = i->first.c_str();
                const char * value = i->second.c_str();

                CHECK_R_VALUE(left)
                CHECK_R_VALUE(top)
                CHECK_R_VALUE(right)
                CHECK_R_VALUE(bottom)
        
                {
                        WAVE_EX(wex);
                        wex << "Invalid property for rect curve: '";
                        wex << name << "'";
                }
        }
}



void
Rectangle::draw
(
IN Drawer * drawer,
IN const rect_t& r_cm,
IN const xform_2d_t& T
)
{
        ASSERT(drawer, "null");

        drawer->setTransform(T);
        if (m_fill)
                drawer->fillRect(m_rect);
        else
                drawer->drawRect(m_rect);
}



////////////////////////////////////////////////////////////////////////////////
//
//      public API
//
////////////////////////////////////////////////////////////////////////////////

#define SET_R_FIELD(x)   init.rect.x = atof(getOptionalValue(data, #x , "0.0"));

void
init_rect_from_data
(
IN const dictionary_t& data,
OUT init_rect_t& init
)
{
        init.id = getRequiredValue(data, "id");

        SET_R_FIELD(left)
        SET_R_FIELD(top)
        SET_R_FIELD(right)
        SET_R_FIELD(bottom)

        init.fill = !strcmp("true", getOptionalValue(data, "fill", "false"));
}



smart_ptr<Primitive>
create_rect
(
IN const init_rect_t& init
)
{
        smart_ptr<Rectangle> local = new Rectangle;
        ASSERT(local, "out of memory");

        local->initialize(init);

        return local;
}


};      // vgfx namespace