g_box.c

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/***************************************************************************
 begin       : Sat Feb 20 2010
 copyright   : (C) 2010 by Martin Preuss
 email       : martin@libchipcard.de

 ***************************************************************************
 *          Please see toplevel file COPYING for license details           *
 ***************************************************************************/


#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#define DISABLE_DEBUGLOG


#include "g_box_p.h"
#include "g_generic_l.h"
#include "g_table_l.h"
#include "g_unorderedlist_l.h"
#include "htmlctx_l.h"
#include "o_box_l.h"
#include "o_word_l.h"
#include "o_grid_l.h"
#include "o_image_be.h"

#include <gwenhywfar/misc.h>
#include <gwenhywfar/debug.h>

#include <ctype.h>




HTML_GROUP *HtmlGroup_Box_new(const char *groupName,
                              HTML_GROUP *parent,
                              GWEN_XML_CONTEXT *ctx)
{
  HTML_GROUP *g;

  /* create base group */
  g=HtmlGroup_Generic_new(groupName, parent, ctx);
  assert(g);

  /* set virtual functions */
  HtmlGroup_SetStartTagFn(g, HtmlGroup_Box_StartTag);
  HtmlGroup_SetAddDataFn(g, HtmlGroup_Box_AddData);

  return g;
}



int HtmlGroup_Box_StartTag(HTML_GROUP *g, const char *tagName)
{
  HTML_GROUP *gNew=NULL;
  GWEN_XML_CONTEXT *ctx;
  GWEN_DB_NODE *dbAttribs;

  assert(g);

  ctx=HtmlGroup_GetXmlContext(g);
  dbAttribs=HtmlCtx_GetCurrentAttributes(ctx);

  if (strcasecmp(tagName, "b")==0) {
    /* Create new parser group with new properties but use the same object */
    HTML_PROPS *pr;
    HTML_FONT *fnt;

    gNew=HtmlGroup_Box_new(tagName, g, ctx);
    pr=HtmlProps_dup(HtmlGroup_GetProperties(g));
    fnt=HtmlProps_GetFont(pr);
    fnt=HtmlCtx_GetFont(ctx,
                        HtmlFont_GetFontName(fnt),
                        HtmlFont_GetFontSize(fnt),
                        HtmlFont_GetFontFlags(fnt) | HTML_FONT_FLAGS_STRONG);
    if (fnt) {
      HtmlProps_SetFont(pr, fnt);
      //HtmlFont_free(fnt);
    }
    HtmlGroup_SetProperties(gNew, pr);
    HtmlProps_free(pr);
    HtmlGroup_SetObject(gNew, HtmlGroup_GetObject(g));
  }
  else if (strcasecmp(tagName, "i")==0) {
    /* Create new parser group with new properties but use the same object */
    HTML_PROPS *pr;
    HTML_FONT *fnt;

    gNew=HtmlGroup_Box_new(tagName, g, ctx);
    pr=HtmlProps_dup(HtmlGroup_GetProperties(g));
    fnt=HtmlProps_GetFont(pr);
    fnt=HtmlCtx_GetFont(ctx,
                        HtmlFont_GetFontName(fnt),
                        HtmlFont_GetFontSize(fnt),
                        HtmlFont_GetFontFlags(fnt) | HTML_FONT_FLAGS_ITALIC);
    if (fnt) {
      HtmlProps_SetFont(pr, fnt);
      //HtmlFont_free(fnt);
    }
    HtmlGroup_SetProperties(gNew, pr);
    HtmlProps_free(pr);
    HtmlGroup_SetObject(gNew, HtmlGroup_GetObject(g));
  }
  else if (strcasecmp(tagName, "u")==0) {
    /* Create new parser group with new properties but use the same object */
    HTML_PROPS *pr;
    HTML_FONT *fnt;

    gNew=HtmlGroup_Box_new(tagName, g, ctx);
    pr=HtmlProps_dup(HtmlGroup_GetProperties(g));
    fnt=HtmlProps_GetFont(pr);
    fnt=HtmlCtx_GetFont(ctx,
                        HtmlFont_GetFontName(fnt),
                        HtmlFont_GetFontSize(fnt),
                        HtmlFont_GetFontFlags(fnt) | HTML_FONT_FLAGS_UNDERLINE);
    if (fnt) {
      HtmlProps_SetFont(pr, fnt);
      //HtmlFont_free(fnt);
    }
    HtmlGroup_SetProperties(gNew, pr);
    HtmlProps_free(pr);
    HtmlGroup_SetObject(gNew, HtmlGroup_GetObject(g));
  }
  else if (strcasecmp(tagName, "p")==0) {
    HTML_OBJECT *o;

    gNew=HtmlGroup_Box_new(tagName, g, ctx);
    HtmlGroup_SetProperties(gNew, HtmlGroup_GetProperties(g));
    o=HtmlObject_Box_new(ctx);
    HtmlObject_AddFlags(o,
                        HTML_OBJECT_FLAGS_START_ON_NEWLINE |
                        HTML_OBJECT_FLAGS_END_WITH_NEWLINE);
    if (dbAttribs) {
      const char *s;

      s=GWEN_DB_GetCharValue(dbAttribs, "align", 0, "left");
      if (s) {
        if (strcasecmp(s, "right")==0)
          HtmlObject_AddFlags(o, HTML_OBJECT_FLAGS_JUSTIFY_RIGHT);
        else if (strcasecmp(s, "center")==0)
          HtmlObject_AddFlags(o, HTML_OBJECT_FLAGS_JUSTIFY_HCENTER);
      }
    }
    HtmlObject_Tree_AddChild(HtmlGroup_GetObject(g), o);
    HtmlObject_SetProperties(o, HtmlGroup_GetProperties(g));
    HtmlGroup_SetObject(gNew, o);
  }
  else if (strcasecmp(tagName, "right")==0) {
    HTML_OBJECT *o;

    gNew=HtmlGroup_Box_new(tagName, g, ctx);
    HtmlGroup_SetProperties(gNew, HtmlGroup_GetProperties(g));
    o=HtmlObject_Box_new(ctx);
    HtmlObject_AddFlags(o,
                        HTML_OBJECT_FLAGS_START_ON_NEWLINE |
                        HTML_OBJECT_FLAGS_END_WITH_NEWLINE |
                        HTML_OBJECT_FLAGS_JUSTIFY_RIGHT);
    HtmlObject_Tree_AddChild(HtmlGroup_GetObject(g), o);
    HtmlObject_SetProperties(o, HtmlGroup_GetProperties(g));
    HtmlGroup_SetObject(gNew, o);
  }
  else if (strcasecmp(tagName, "br")==0) {
    HTML_OBJECT *o;

    /* just create and add a control object */
    o=HtmlObject_new(ctx, HtmlObjectType_Control);
    HtmlObject_AddFlags(o, HTML_OBJECT_FLAGS_END_WITH_NEWLINE);
    HtmlObject_Tree_AddChild(HtmlGroup_GetObject(g), o);
    HtmlObject_SetProperties(o, HtmlGroup_GetProperties(g));
  }
  else if (strcasecmp(tagName, "img")==0) {
    HTML_OBJECT *o;
    GWEN_DB_NODE *dbAttribs;

    o=HtmlObject_Image_new(ctx);
    HtmlObject_AddFlags(o,
                        HTML_OBJECT_FLAGS_START_ON_NEWLINE |
                        HTML_OBJECT_FLAGS_END_WITH_NEWLINE);
    dbAttribs=HtmlCtx_GetCurrentAttributes(ctx);
    if (dbAttribs) {
      const char *s;
      int w;
      int h;

      w=GWEN_DB_GetIntValue(dbAttribs, "width", 0, -1);
      h=GWEN_DB_GetIntValue(dbAttribs, "height", 0, -1);

      /* preset */
      if (w!=-1)
        HtmlObject_Image_SetScaledWidth(o, w);
      if (h!=-1)
        HtmlObject_Image_SetScaledHeight(o, w);

      s=GWEN_DB_GetCharValue(dbAttribs, "src", 0, NULL);
      if (s && *s) {
        HTML_IMAGE *img;

        img=HtmlCtx_GetImage(ctx, s);
        if (img) {
          HtmlObject_Image_SetImage(o, img);
          /* adjust scaled width and height if not set by attributes */
          if (w==-1)
            HtmlObject_Image_SetScaledWidth(o, HtmlImage_GetWidth(img));
          if (h==-1)
            HtmlObject_Image_SetScaledHeight(o, HtmlImage_GetHeight(img));
        }
        else {
          DBG_ERROR(GWEN_LOGDOMAIN, "Image [%s] not found", s);
        }
      }
      else {
        DBG_ERROR(GWEN_LOGDOMAIN, "Missing image name in IMG element");
      }
    }

    HtmlObject_Tree_AddChild(HtmlGroup_GetObject(g), o);
    HtmlObject_SetProperties(o, HtmlGroup_GetProperties(g));
  }
  else if (strcasecmp(tagName, "table")==0) {
    HTML_OBJECT *o;

    gNew=HtmlGroup_Table_new(tagName, g, ctx);
    HtmlGroup_SetProperties(gNew, HtmlGroup_GetProperties(g));
    o=HtmlObject_Grid_new(ctx);
    HtmlObject_SetProperties(o, HtmlGroup_GetProperties(g));
    HtmlGroup_SetObject(gNew, o);
    HtmlObject_Tree_AddChild(HtmlGroup_GetObject(g), o);
  }
  else if (strcasecmp(tagName, "ul")==0) {
    HTML_OBJECT *o;

    gNew=HtmlGroup_UnorderedList_new(tagName, g, ctx);
    HtmlGroup_SetProperties(gNew, HtmlGroup_GetProperties(g));
    o=HtmlObject_Grid_new(ctx);
    HtmlObject_Grid_SetColumns(o, 2);
    HtmlObject_SetProperties(o, HtmlGroup_GetProperties(g));
    HtmlGroup_SetObject(gNew, o);
    HtmlObject_Tree_AddChild(HtmlGroup_GetObject(g), o);
  }
  else if (strcasecmp(tagName, "font")==0) {
    /* Create new parser group with new properties but use the same object */
    HTML_PROPS *pr;
    GWEN_DB_NODE *dbAttribs;

    gNew=HtmlGroup_Box_new(tagName, g, ctx);
    pr=HtmlProps_dup(HtmlGroup_GetProperties(g));

    dbAttribs=HtmlCtx_GetCurrentAttributes(ctx);
    if (dbAttribs) {
      HTML_FONT *fnt;
      const char *s;
      const char *fontName;
      int fontSize;
      uint32_t fontFlags;

      fnt=HtmlProps_GetFont(pr);
      fontName=GWEN_DB_GetCharValue(dbAttribs, "face", 0, NULL);
      if (fontName==NULL)
        fontName=HtmlFont_GetFontName(fnt);
      fontFlags=HtmlFont_GetFontFlags(fnt);
      fontSize=HtmlFont_GetFontSize(fnt);
      s=GWEN_DB_GetCharValue(dbAttribs, "size", 0, NULL);
      if (s && *s) {
        if (*s=='+') {
          int i;

          sscanf(s, "%d", &i);
          fontSize+=i*4;
        }
        else if (*s=='-') {
          int i;

          sscanf(s, "%d", &i);
          fontSize+=i*4;
        }
        else
          sscanf(s, "%d", &fontSize);
      }

      s=GWEN_DB_GetCharValue(dbAttribs, "color", 0, NULL);
      if (s && *s) {
        uint32_t color;

        color=HtmlCtx_GetColorFromName(ctx, s);
        HtmlProps_SetForegroundColor(pr, color);
      }

      fnt=HtmlCtx_GetFont(ctx, fontName, fontSize, fontFlags);
      if (fnt) {
        HtmlProps_SetFont(pr, fnt);
        //HtmlFont_free(fnt);
      }
    }

    HtmlGroup_SetProperties(gNew, pr);
    HtmlProps_free(pr);
    HtmlGroup_SetObject(gNew, HtmlGroup_GetObject(g));
  }
  else if (strcasecmp(tagName, "h1")==0) {
    /* Create new parser group with new properties but use the same object */
    HTML_PROPS *pr;
    HTML_FONT *fnt;
    HTML_OBJECT *o;

    gNew=HtmlGroup_Box_new(tagName, g, ctx);
    pr=HtmlProps_dup(HtmlGroup_GetProperties(g));
    fnt=HtmlProps_GetFont(pr);
    fnt=HtmlCtx_GetFont(ctx,
                        HtmlFont_GetFontName(fnt),
                        HtmlFont_GetFontSize(fnt)*1.8,
                        HtmlFont_GetFontFlags(fnt) | HTML_FONT_FLAGS_STRONG);
    if (fnt) {
      HtmlProps_SetFont(pr, fnt);
      //HtmlFont_free(fnt);
    }
    HtmlGroup_SetProperties(gNew, pr);

    o=HtmlObject_Box_new(ctx);
    HtmlObject_Tree_AddChild(HtmlGroup_GetObject(g), o);
    HtmlObject_AddFlags(o,
                        HTML_OBJECT_FLAGS_START_ON_NEWLINE |
                        HTML_OBJECT_FLAGS_END_WITH_NEWLINE);
    HtmlObject_SetProperties(o, pr);
    HtmlGroup_SetObject(gNew, o);
    HtmlProps_free(pr);
  }
  else if (strcasecmp(tagName, "h2")==0) {
    /* Create new parser group with new properties but use the same object */
    HTML_PROPS *pr;
    HTML_FONT *fnt;
    HTML_OBJECT *o;

    gNew=HtmlGroup_Box_new(tagName, g, ctx);
    pr=HtmlProps_dup(HtmlGroup_GetProperties(g));
    fnt=HtmlProps_GetFont(pr);
    fnt=HtmlCtx_GetFont(ctx,
                        HtmlFont_GetFontName(fnt),
                        HtmlFont_GetFontSize(fnt)*1.5,
                        HtmlFont_GetFontFlags(fnt) | HTML_FONT_FLAGS_STRONG);
    if (fnt) {
      HtmlProps_SetFont(pr, fnt);
      //HtmlFont_free(fnt);
    }
    HtmlGroup_SetProperties(gNew, pr);

    o=HtmlObject_Box_new(ctx);
    HtmlObject_Tree_AddChild(HtmlGroup_GetObject(g), o);
    HtmlObject_AddFlags(o,
                        HTML_OBJECT_FLAGS_START_ON_NEWLINE |
                        HTML_OBJECT_FLAGS_END_WITH_NEWLINE);
    HtmlObject_SetProperties(o, pr);
    HtmlGroup_SetObject(gNew, o);
    HtmlProps_free(pr);
  }
  else if (strcasecmp(tagName, "h3")==0) {
    /* Create new parser group with new properties but use the same object */
    HTML_PROPS *pr;
    HTML_FONT *fnt;
    HTML_OBJECT *o;

    gNew=HtmlGroup_Box_new(tagName, g, ctx);
    pr=HtmlProps_dup(HtmlGroup_GetProperties(g));
    fnt=HtmlProps_GetFont(pr);
    fnt=HtmlCtx_GetFont(ctx,
                        HtmlFont_GetFontName(fnt),
                        HtmlFont_GetFontSize(fnt),
                        HtmlFont_GetFontFlags(fnt) | HTML_FONT_FLAGS_STRONG);
    if (fnt) {
      HtmlProps_SetFont(pr, fnt);
      //HtmlFont_free(fnt);
    }
    HtmlGroup_SetProperties(gNew, pr);

    o=HtmlObject_Box_new(ctx);
    HtmlObject_Tree_AddChild(HtmlGroup_GetObject(g), o);
    HtmlObject_AddFlags(o,
                        HTML_OBJECT_FLAGS_START_ON_NEWLINE |
                        HTML_OBJECT_FLAGS_END_WITH_NEWLINE);
    HtmlObject_SetProperties(o, pr);
    HtmlGroup_SetObject(gNew, o);
    HtmlProps_free(pr);
  }
  else if (strcasecmp(tagName, "h4")==0) {
    /* Create new parser group with new properties but use the same object */
    HTML_PROPS *pr;
    HTML_FONT *fnt;
    HTML_OBJECT *o;

    gNew=HtmlGroup_Box_new(tagName, g, ctx);
    pr=HtmlProps_dup(HtmlGroup_GetProperties(g));
    fnt=HtmlProps_GetFont(pr);
    fnt=HtmlCtx_GetFont(ctx,
                        HtmlFont_GetFontName(fnt),
                        HtmlFont_GetFontSize(fnt),
                        HtmlFont_GetFontFlags(fnt) | HTML_FONT_FLAGS_ITALIC);
    if (fnt) {
      HtmlProps_SetFont(pr, fnt);
      //HtmlFont_free(fnt);
    }
    HtmlGroup_SetProperties(gNew, pr);

    o=HtmlObject_Box_new(ctx);
    HtmlObject_Tree_AddChild(HtmlGroup_GetObject(g), o);
    HtmlObject_AddFlags(o,
                        HTML_OBJECT_FLAGS_START_ON_NEWLINE |
                        HTML_OBJECT_FLAGS_END_WITH_NEWLINE);
    HtmlObject_SetProperties(o, pr);
    HtmlGroup_SetObject(gNew, o);
    HtmlProps_free(pr);
  }
  else if (strcasecmp(tagName, "html")==0 ||
           strcasecmp(tagName, "body")==0) {
  }
  else {
    DBG_WARN(GWEN_LOGDOMAIN,
             "Unknown group [%s], handling as normal box", tagName);
    gNew=HtmlGroup_Box_new(tagName, g, ctx);
    HtmlGroup_SetProperties(gNew, HtmlGroup_GetProperties(g));
    HtmlGroup_SetObject(gNew, HtmlGroup_GetObject(g));
  }

  if (gNew) {
    HtmlCtx_SetCurrentGroup(ctx, gNew);
    GWEN_XmlCtx_IncDepth(ctx);
  }

  return 0;
}



int HtmlGroup_Box_AddData(HTML_GROUP *g, const char *data)
{
  GWEN_XML_CONTEXT *ctx;
  GWEN_BUFFER *buf;
  int rv;
  uint8_t *s;
  HTML_OBJECT *o;

  assert(g);

  ctx=HtmlGroup_GetXmlContext(g);
  if (data && *data) {
    buf=GWEN_Buffer_new(0, strlen(data), 0, 1);
    rv=HtmlCtx_SanitizeData(ctx, data, buf);
    if (rv<0) {
      DBG_INFO(GWEN_LOGDOMAIN, "here (%d)", rv);
      GWEN_Buffer_free(buf);
      return rv;
    }
    if (GWEN_Buffer_GetUsedBytes(buf)) {
      s=(uint8_t *)GWEN_Buffer_GetStart(buf);

      while (*s) {
        uint8_t *t;
        uint8_t c;

        /* find begin of word */
        while (*s && isspace(*s))
          s++;

        /* find end of word */
        t=s;
        while (*t && !isspace(*t))
          t++;
        c=*t;
        *t=0;
        o=HtmlObject_Word_new(ctx, (const char *) s);
        HtmlObject_SetProperties(o, HtmlGroup_GetProperties(g));
        HtmlObject_Tree_AddChild(HtmlGroup_GetObject(g), o);
        *t=c;
        s=t;
      }
    }
    GWEN_Buffer_free(buf);
  }

  return 0;
}