GLWBitmap.cpp

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////////////////////////////////////////////////////////////////////////////////
//    Scorched3D (c) 2000-2009
//
//    This file is part of Scorched3D.
//
//    Scorched3D 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.
//
//    Scorched3D is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with Scorched3D; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
////////////////////////////////////////////////////////////////////////////////

#include <GLW/GLWBitmap.h>
#include <GLEXT/GLState.h>
#include <common/Defines.h>

REGISTER_CLASS_SOURCE(GLWBitmap);

GLWBitmap::GLWBitmap(float x, float y, float w, float h, Image *bitmap) : 
        GLWidget(x, y, w, h),
        bitmap_(bitmap)
{
}

GLWBitmap::~GLWBitmap()
{
}

void GLWBitmap::draw()
{
        if (bitmap_)
        {
                GLState state(GLState::TEXTURE_OFF | GLState::BLEND_OFF);

                int width = MIN(bitmap_->getWidth(), (int) w_);
                int height = MIN(bitmap_->getHeight(), (int) h_);

                glPixelStorei(GL_PACK_ALIGNMENT, 4);    /* Force 4-byte alignment */
                glPixelStorei(GL_PACK_ROW_LENGTH, 0);
                glPixelStorei(GL_PACK_SKIP_ROWS, 0);
                glPixelStorei(GL_PACK_SKIP_PIXELS, 0);

                glRasterPos2f(x_, y_);
                glDrawPixels(
                        width, 
                        height,
                        GL_RGB, 
                        GL_UNSIGNED_BYTE, 
                        bitmap_->getBits());

                glPixelStorei(GL_PACK_ALIGNMENT, 4);    /* Force 4-byte alignment */
                glPixelStorei(GL_PACK_ROW_LENGTH, 0);
                glPixelStorei(GL_PACK_SKIP_ROWS, 0);
                glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
        }

        GLWidget::draw();
}

bool GLWBitmap::initFromXML(XMLNode *node)
{
        if (!GLWidget::initFromXML(node)) return false;
        return true;
}

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