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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "SVG.h"
#include "../base/Exception.h"
#include "../base/ObjectCounter.h"
#include "../base/ScopeTimer.h"
#include "../base/OSHelper.h"
#include "../base/StringHelper.h"
#include "../base/Logger.h"
#include "../graphics/PixelFormat.h"
#include "../graphics/Filterfill.h"
#include "../graphics/Filterfliprgb.h"
#include "../graphics/FilterUnmultiplyAlpha.h"
#include "../graphics/BitmapLoader.h"
#include "OGLSurface.h"
#include "Player.h"
#include "ImageNode.h"
#include <glib-object.h>
#ifndef RSVG_CAIRO_H
#include <librsvg/rsvg-cairo.h>
#endif
#include <cairo.h>
#include <iostream>
using namespace std;
namespace avg {
SVG::SVG(const UTF8String& sFilename, bool bUnescapeIllustratorIDs)
: m_sFilename(sFilename),
m_bUnescapeIllustratorIDs(bUnescapeIllustratorIDs)
{
GError* pErr = 0;
m_pRSVG = rsvg_handle_new_from_file(m_sFilename.c_str(), &pErr);
if (!m_pRSVG) {
throw Exception(AVG_ERR_INVALID_ARGS,
string("Could not open svg file: ") + m_sFilename);
g_error_free(pErr);
}
}
SVG::~SVG()
{
g_object_unref(m_pRSVG);
}
BitmapPtr SVG::renderElement(const UTF8String& sElementID)
{
return renderElement(sElementID, 1);
}
BitmapPtr SVG::renderElement(const UTF8String& sElementID, const glm::vec2& size)
{
SVGElementPtr pElement = getElement(sElementID);
glm::vec2 elementSize = pElement->getSize();
return internalRenderElement(pElement, size, elementSize);
}
BitmapPtr SVG::renderElement(const UTF8String& sElementID, float scale)
{
SVGElementPtr pElement = getElement(sElementID);
glm::vec2 size = pElement->getSize();
glm::vec2 renderSize = size * scale;
return internalRenderElement(pElement, renderSize, size);
}
NodePtr SVG::createImageNode(const UTF8String& sElementID, const py::dict& nodeAttrs)
{
BitmapPtr pBmp = renderElement(sElementID);
return createImageNodeFromBitmap(pBmp, nodeAttrs);
}
NodePtr SVG::createImageNode(const UTF8String& sElementID, const py::dict& nodeAttrs,
const glm::vec2& renderSize)
{
BitmapPtr pBmp = renderElement(sElementID, renderSize);
return createImageNodeFromBitmap(pBmp, nodeAttrs);
}
NodePtr SVG::createImageNode(const UTF8String& sElementID, const py::dict& nodeAttrs,
float scale)
{
BitmapPtr pBmp = renderElement(sElementID, scale);
return createImageNodeFromBitmap(pBmp, nodeAttrs);
}
glm::vec2 SVG::getElementPos(const UTF8String& sElementID)
{
SVGElementPtr pElement = getElement(sElementID);
return pElement->getPos();
}
glm::vec2 SVG::getElementSize(const UTF8String& sElementID)
{
SVGElementPtr pElement = getElement(sElementID);
return pElement->getSize();
}
BitmapPtr SVG::internalRenderElement(const SVGElementPtr& pElement,
const glm::vec2& renderSize, const glm::vec2& size)
{
glm::vec2 pos = pElement->getPos();
glm::vec2 scale(renderSize.x/size.x, renderSize.y/size.y);
IntPoint boundingBox = IntPoint(renderSize) +
IntPoint(int(scale.x+0.5), int(scale.y+0.5));
BitmapPtr pBmp(new Bitmap(boundingBox, B8G8R8A8));
FilterFill<Pixel32>(Pixel32(0,0,0,0)).applyInPlace(pBmp);
cairo_surface_t* pSurface;
cairo_t* pCairo;
pSurface = cairo_image_surface_create_for_data(pBmp->getPixels(),
CAIRO_FORMAT_ARGB32, boundingBox.x, boundingBox.y,
pBmp->getStride());
pCairo = cairo_create(pSurface);
cairo_scale(pCairo, scale.x, scale.y);
cairo_translate(pCairo, -pos.x, -pos.y);
rsvg_handle_render_cairo_sub(m_pRSVG, pCairo, pElement->getUnescapedID().c_str());
FilterUnmultiplyAlpha().applyInPlace(pBmp);
cairo_surface_destroy(pSurface);
cairo_destroy(pCairo);
if (!BitmapLoader::get()->isBlueFirst()) {
FilterFlipRGB().applyInPlace(pBmp);
}
return pBmp;
}
NodePtr SVG::createImageNodeFromBitmap(BitmapPtr pBmp, const py::dict& nodeAttrs)
{
ImageNodePtr pNode = boost::dynamic_pointer_cast<ImageNode>(
Player::get()->createNode("image", nodeAttrs));
pNode->setBitmap(pBmp);
return pNode;
}
SVGElementPtr SVG::getElement(const UTF8String& sElementID)
{
map<UTF8String, SVGElementPtr>::iterator pos = m_ElementMap.find(sElementID);
if (pos == m_ElementMap.end()) {
SVGElementPtr pElement(new SVGElement(m_pRSVG, m_sFilename, sElementID,
m_bUnescapeIllustratorIDs));
m_ElementMap[sElementID] = pElement;
return pElement;
} else {
return pos->second;
}
}
}
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