/* AbiWord
 * Copyright (C) 2004 Luca Padovani <lpadovan@cs.unibo.it>
 *
 * 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.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

#include "gr_Graphics.h"
#include "gr_Painter.h"
#include "gr_Abi_RenderingContext.h"
#include <math.h>

GR_Abi_RenderingContext::GR_Abi_RenderingContext(GR_Graphics* pGr)
  : m_pGraphics(pGr)
{
  UT_ASSERT(m_pGraphics);
}

GR_Abi_RenderingContext::~GR_Abi_RenderingContext()
{ }

void
GR_Abi_RenderingContext::setColor(const UT_RGBColor& c)
{ m_pGraphics->setColor(c); }

void
GR_Abi_RenderingContext::getColor(UT_RGBColor& c) const
{ m_pGraphics->getColor(c); }

void
GR_Abi_RenderingContext::getColor(RGBColor& c) const
{ 
  UT_RGBColor color;
  m_pGraphics->getColor(color);
  c = GR_Abi_RenderingContext::fromAbiColor(color);
}

 UT_sint32 GR_Abi_RenderingContext::toAbiLayoutUnits(const scaled& s) const
{
  return round(s * UT_LAYOUT_RESOLUTION / 72.0).toDouble();
}

scaled GR_Abi_RenderingContext::fromAbiLayoutUnits(UT_sint32 s)  const
{
  return scaled(s * 72.0 / UT_LAYOUT_RESOLUTION);
}

 scaled GR_Abi_RenderingContext::fromAbiX(UT_sint32 x) const
  { return fromAbiLayoutUnits(x); }

 scaled GR_Abi_RenderingContext::fromAbiY(UT_sint32 y)  const
  { return fromAbiLayoutUnits(-y); }


  UT_sint32 GR_Abi_RenderingContext::toAbiX(const scaled& x)  const
  { return toAbiLayoutUnits(x); }


  UT_sint32 GR_Abi_RenderingContext::toAbiY(const scaled& y)  const
  { return toAbiLayoutUnits(-y); }

void
GR_Abi_RenderingContext::fill(const UT_RGBColor& color, const scaled& x, const scaled& y, const BoundingBox& box) const
{
  xxx_UT_DEBUGMSG(("GR_Abi_RenderingContext::fill: color = %d %d %d at (%d,%d) box = [%d,%d,%d]\n",
		   color.m_red, color.m_grn, color.m_blu,
		   toAbiLayoutUnits(x), toAbiLayoutUnits(y),
		   toAbiLayoutUnits(box.width), toAbiLayoutUnits(box.height), toAbiLayoutUnits(box.depth)));
  GR_Painter Painter(m_pGraphics);
  UT_sint32 iHeight = toAbiLayoutUnits(box.verticalExtent());
  m_pGraphics->antiAliasAlways(true);
  UT_DEBUGMSG(("Doing Fill in Math iHeight %d \n",iHeight));
  Painter.fillRect(color,
		   toAbiX(x),
		   toAbiY(y + box.verticalExtent()),
		   toAbiLayoutUnits(box.horizontalExtent()),
		   iHeight);
  m_pGraphics->antiAliasAlways(false);
}

void
GR_Abi_RenderingContext::fill(const scaled& x, const scaled& y, const BoundingBox& box) const
{
  UT_RGBColor color;
  getColor(color);
  fill(color, x, y, box);
}

void
GR_Abi_RenderingContext::drawGlyph(const scaled& x, const scaled& y, GR_Font* f, UT_uint32 glyph) const
{
  m_pGraphics->setFont(f);
  GR_Painter Painter(m_pGraphics);
  Painter.drawGlyph(glyph,
		    toAbiX(x),
		    toAbiY(y));
}

void
GR_Abi_RenderingContext::drawChar(const scaled& x, const scaled& y, GR_Font* f, UT_UCS4Char c) const
{
  m_pGraphics->setFont(f);
  GR_Painter Painter(m_pGraphics);
  UT_sint32 ax = toAbiX(x);
  UT_sint32 ay = toAbiY(y) - m_pGraphics->getFontAscent(f);
  Painter.drawChars(&c, 0, 1,ax,ay);
}

void
GR_Abi_RenderingContext::drawBox(const scaled& x, const scaled& y, const BoundingBox& box) const
{
  UT_DEBUGMSG(("Doing drawBox in Math \n"));
  const UT_sint32 x0 = toAbiX(x);
  const UT_sint32 x1 = toAbiX(x + box.width);
  const UT_sint32 y0 = toAbiY(y);
  const UT_sint32 y1 = toAbiY(y + box.height);
  const UT_sint32 y2 = toAbiY(y - box.depth);
  GR_Painter Painter(m_pGraphics);
  m_pGraphics->antiAliasAlways(true);
  Painter.drawLine(x0, y0, x1, y0);
  Painter.drawLine(x0, y1, x0, y2);
  Painter.drawLine(x1, y1, x1, y2);
  Painter.drawLine(x0, y1, x1, y1);
  Painter.drawLine(x0, y2, x1, y2);
  m_pGraphics->antiAliasAlways(false);
}
