bmp.h

下载来的一个看图软件的源代码

/* libwmf ("ipa/svg/bmp.h"): library for wmf conversion
   Copyright (C) 2000 - various; see CREDITS, ChangeLog, and sources

   The libwmf Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 of the
   License, or (at your option) any later version.

   The libwmf 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the libwmf Library; see the file COPYING.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */


static void wmf_svg_rop_draw (wmfAPI* API,wmfROP_Draw_t* rop_draw)
{	/* wmf_svg_t* ddata = WMF_SVG_GetData (API); */

	WMF_DEBUG (API,"~~~~~~~~wmf_[svg_]rop_draw");

	
}

/* TODO ?? Care about bmp_draw->type
 */
static void wmf_svg_bmp_draw (wmfAPI* API,wmfBMP_Draw_t* bmp_draw)
{	wmf_svg_t* ddata = WMF_SVG_GetData (API);

	float width;
	float height;

	char* name = 0;

	svgPoint pt;

	wmfStream* out = ddata->out;

	WMF_DEBUG (API,"~~~~~~~~wmf_[svg_]bmp_draw");

	if (out == 0) return;

	if (bmp_draw->bmp.data == 0) return;

	if ((ddata->flags & WMF_SVG_INLINE_IMAGES) == 0)
	{	if (ddata->image.name == 0) return;

		name = ddata->image.name (ddata->image.context);

		if (name == 0) return;

		wmf_ipa_bmp_png (API,bmp_draw,name);

		if (ERR (API))
		{	WMF_DEBUG (API,"bailing...");
			return;
		}

		/* Okay, if we've got this far then "name" is the filename of an png (cropped) image */
	}

	pt = svg_translate (API,bmp_draw->pt);

	width  = (float) (bmp_draw->pixel_width  * (double) bmp_draw->crop.w);
	height = (float) (bmp_draw->pixel_height * (double) bmp_draw->crop.h);

	width  = svg_width  (API,width);
	height = svg_height (API,height);

	width  = ABS (width);
	height = ABS (height);

	wmf_stream_printf (API,out,"<image ");

	wmf_stream_printf (API,out,"x=\"%f\" ",pt.x);
	wmf_stream_printf (API,out,"y=\"%f\" ",pt.y);

	wmf_stream_printf (API,out, "width=\"%f\" ",width);
	wmf_stream_printf (API,out,"height=\"%f\"\n",height);

	width  /= (float) bmp_draw->crop.w;
	height /= (float) bmp_draw->crop.h;

	wmf_stream_printf (API,out,"\ttransform=\"matrix(");
	wmf_stream_printf (API,out,"%f 0 0 %f %f %f)\"\n",width,height,pt.x,pt.y);

	if ((ddata->flags & WMF_SVG_INLINE_IMAGES) == 0)
	{	wmf_stream_printf (API,out,"\tsodipodi:absref=\"%s\"\n",name);
		wmf_stream_printf (API,out,"\txlink:href=\"%s\"/>\n",name);
	}
	else
	{	wmf_stream_printf (API,out,"\txlink:href=\"data:image/png;base64,");

		wmf_ipa_bmp_b64 (API,bmp_draw,out);

		if (ERR (API))
		{	WMF_DEBUG (API,"bailing...");
			return;
		}

		wmf_stream_printf (API,out,"\"/>\n");
	}
}

static void wmf_svg_bmp_read (wmfAPI* API,wmfBMP_Read_t* bmp_read)
{	WMF_DEBUG (API,"~~~~~~~~wmf_[svg_]bmp_read");

	wmf_ipa_bmp_read (API,bmp_read);
}

static void wmf_svg_bmp_free (wmfAPI* API,wmfBMP* bmp)
{	WMF_DEBUG (API,"~~~~~~~~wmf_[svg_]bmp_free");

	wmf_ipa_bmp_free (API,bmp);
}