mapkml.cpp

/******************************************************************************
 * $Id$
 *
 * Project:  MapServer
 * Purpose:  Headers for mapkml.cpp Google Earth KML output
 * Author:   David Kana and the MapServer team
 *
 ******************************************************************************
 * Copyright (c) 1996-2009 Regents of the University of Minnesota.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies of this Software or works derived from this Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *****************************************************************************/
#include "mapserver.h"

#ifdef USE_KML

#include "mapkmlrenderer.h"

#ifdef __cplusplus
extern "C" {
#endif

  KmlRenderer* getKmlRenderer(imageObj* img)
  {
    return (KmlRenderer*) img->img.plugin;
  }

  imageObj* msCreateImageKml(int width, int height, outputFormatObj *format, colorObj* bg)
  {
    imageObj *image = NULL;

    image = (imageObj*)malloc(sizeof(imageObj));
    MS_CHECK_ALLOC(image, sizeof(imageObj), NULL);
    memset(image, 0, sizeof(imageObj));

    KmlRenderer *ren = new KmlRenderer(width, height, format, bg);
    image->img.plugin = (void *) ren;

    return image;
  }

  int msSaveImageKml(imageObj *img, mapObj* /*map*/, FILE *fp, outputFormatObj *format)
  {
    KmlRenderer* renderer = getKmlRenderer(img);
    return renderer->saveImage(img, fp, format);
  }

  int msRenderLineKml(imageObj *img, shapeObj *p, strokeStyleObj *style)
  {
    KmlRenderer* renderer = getKmlRenderer(img);
    renderer->renderLine(img, p, style);
    return MS_SUCCESS;
  }

  int msRenderPolygonKml(imageObj *img, shapeObj *p, colorObj *color)
  {
    KmlRenderer* renderer = getKmlRenderer(img);
    renderer->renderPolygon(img, p, color);
    return MS_SUCCESS;
  }

  int msRenderPolygonTiledKml(imageObj * /*img*/, shapeObj * /*p*/,  imageObj * /*tile*/)
  {
    /*KmlRenderer* renderer = getKmlRenderer(img);*/
    return MS_SUCCESS;
  }

  int msRenderLineTiledKml(imageObj * /*img*/, shapeObj * /*p*/, imageObj * /*tile*/)
  {
    return MS_SUCCESS;
  }

  int msRenderGlyphsKml(imageObj *img, pointObj *labelpnt, char *text, double angle, colorObj *clr, colorObj *olcolor, int olwidth)
  {
    KmlRenderer* renderer = getKmlRenderer(img);
    renderer->renderGlyphs(img, labelpnt, text, angle, clr, olcolor, olwidth);
    return MS_SUCCESS;
  }

  int msRenderVectorSymbolKml(imageObj *img, double x, double y,
                              symbolObj *symbol, symbolStyleObj *style)
  {
    KmlRenderer* renderer = getKmlRenderer(img);
    renderer->renderVectorSymbol(img, x, y, symbol, style);
    return MS_SUCCESS;
  }

  int msRenderPixmapSymbolKml(imageObj *img, double x, double y,
                              symbolObj *symbol, symbolStyleObj *style)
  {
    KmlRenderer* renderer = getKmlRenderer(img);
    renderer->renderPixmapSymbol(img, x, y, symbol, style);
    return MS_SUCCESS;
  }

  int msRenderEllipseSymbolKml(imageObj *image, double x, double y,
                               symbolObj *symbol, symbolStyleObj *style)
  {
    KmlRenderer* renderer = getKmlRenderer(image);
    renderer->renderEllipseSymbol(image, x, y, symbol, style);
    return MS_SUCCESS;
  }

  int msRenderTruetypeSymbolKml(imageObj *image, double x, double y,
                                symbolObj *symbol, symbolStyleObj *style)
  {
    KmlRenderer* renderer = getKmlRenderer(image);
    renderer->renderTruetypeSymbol(image, x, y, symbol, style);
    return MS_SUCCESS;
  }


  int msRenderTileKml(imageObj * /*img*/, imageObj * /*tile*/, double /*x*/, double /*y*/)
  {
    return MS_SUCCESS;
  }

  int msGetRasterBufferKml(imageObj * /*img*/,rasterBufferObj * /*rb*/)
  {
    return MS_FAILURE; //not supported for kml
  }


  int msGetTruetypeTextBBoxKml(rendererVTableObj * /*r*/,char** /*fonts*/, int /*numfonts*/, double size, char *string,
                               rectObj *rect, double **advances, int /*bAdjustBaseline*/)
  {
    rect->minx=0.0;
    rect->maxx=0.0;
    rect->miny=0.0;
    rect->maxy=0.0;
    if (advances) {
      int numglyphs = msGetNumGlyphs(string);
      *advances = (double*) msSmallMalloc(numglyphs * sizeof (double));
      for(int i=0; i<numglyphs; i++) {
        (*advances)[i] = size;
      }
    }
    return MS_SUCCESS;
  }

  int msStartNewLayerKml(imageObj *img, mapObj * /*map*/, layerObj *layer)
  {
    KmlRenderer* renderer = getKmlRenderer(img);
    return renderer->startNewLayer(img, layer);
  }

  int msCloseNewLayerKml(imageObj *img, mapObj * /*map*/, layerObj *layer)
  {
    KmlRenderer* renderer = getKmlRenderer(img);
    return renderer->closeNewLayer(img, layer);
  }

  int msFreeImageKml(imageObj *image)
  {
    KmlRenderer* renderer = getKmlRenderer(image);
    if (renderer) {
      delete renderer;
    }
    image->img.plugin=NULL;
    return MS_SUCCESS;
  }

  int msFreeSymbolKml(symbolObj * /*symbol*/)
  {
    return MS_SUCCESS;
  }

  int msStartShapeKml(imageObj *img, shapeObj *shape)
  {
    KmlRenderer* renderer = getKmlRenderer(img);
    renderer->startShape(img, shape);
    return MS_SUCCESS;
  }

  int msEndShapeKml(imageObj *img, shapeObj *shape)
  {
    KmlRenderer* renderer = getKmlRenderer(img);
    renderer->endShape(img, shape);
    return MS_SUCCESS;
  }

  int msMergeRasterBufferKml(imageObj *dest, rasterBufferObj *overlay, double /*opacity*/, int /*srcX*/,
                             int /*srcY*/, int /*dstX*/, int /*dstY*/, int /*width*/, int /*height*/)
  {
    KmlRenderer* renderer = getKmlRenderer(dest);
    return renderer->mergeRasterBuffer(dest,overlay);
  }

#ifdef __cplusplus
}
#endif


#endif /*USE_KML*/

int aggInitializeRasterBuffer(rasterBufferObj *rb, int width, int height, int mode);

int msPopulateRendererVTableKML( rendererVTableObj *renderer )
{
#ifdef USE_KML
  renderer->supports_pixel_buffer = 0;
  renderer->supports_clipping = 0;
  renderer->use_imagecache = 0;
  renderer->default_transform_mode = MS_TRANSFORM_NONE;

  renderer->startLayer = msStartNewLayerKml;
  renderer->endLayer = msCloseNewLayerKml;
  renderer->renderLine=&msRenderLineKml;
  renderer->createImage=&msCreateImageKml;
  renderer->saveImage=&msSaveImageKml;
  renderer->renderPolygon=&msRenderPolygonKml;
  renderer->renderText=&msRenderGlyphsKml;
  renderer->renderEllipseSymbol = &msRenderEllipseSymbolKml;
  renderer->renderVectorSymbol = &msRenderVectorSymbolKml;
  renderer->renderPixmapSymbol = &msRenderPixmapSymbolKml;
  renderer->mergeRasterBuffer = &msMergeRasterBufferKml;
  renderer->loadImageFromFile = msLoadMSRasterBufferFromFile;
  renderer->initializeRasterBuffer = aggInitializeRasterBuffer;
  renderer->renderTile = &msRenderTileKml;
  renderer->renderPolygonTiled = &msRenderPolygonTiledKml;
  renderer->renderLineTiled = NULL;
  renderer->freeSymbol = &msFreeSymbolKml;
  renderer->freeImage=&msFreeImageKml;
  renderer->mergeRasterBuffer = msMergeRasterBufferKml;
  renderer->compositeRasterBuffer = NULL;

  renderer->startShape=&msStartShapeKml;
  renderer->endShape=&msEndShapeKml;

  return MS_SUCCESS;
#else
  msSetError(MS_MISCERR, "KML Driver requested but is not built in",
             "msPopulateRendererVTableKML()");
  return MS_FAILURE;
#endif
}