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enum { ALIGN_LEFT, ALIGN_CENTER, ALIGN_RIGHT};

struct _style {

	b, i, u, s, h,

	pre,

	blq,

	li,

	li_tab,

	align;

};

struct TWebBrowser {

	_style style;

	DrawBufer DrawBuf;

	void Prepare();

	void SetStyle();

	void DrawStyle();

	void DrawPage();

	void DrawScroller();

	void LoadInternalPage();

	void NewLine();

	void Perenos();

	void BufEncode();

} WB1;

	ignor_text,

	cur_encoding,

	t_html,

	t_body;

dword bufpointer=0;

dword bufsize=0;

dword text_colors[300];

dword link_color_inactive;

dword link_color_active;

dword bg_color;

dword block_bg_color;

int stroka;

int tab_len;

int anchor_line_num;

char URL[10000];

char line[500];

char tagparam[10000];

char tag[100];

char oldtag[100];

char attr[1200];

char val[4096];

char anchor[256]=0;

#include "..\TWB\absolute_url.h"

#include "..\TWB\colors.h"

#include "..\TWB\unicode_tags.h"

#include "..\TWB\img_cache.h"

#include "..\TWB\parce_tag.h"

{

	int start_x, start_y, line_length, stolbec_len, body_magrin=5;

	if (!header)

		ChangeCharset("UTF-8", "CP866", #line);

		strcpy(#header, #line);

		strcat(#header, " -");

		strcat(#header, #version);

		line = 0;

		return;

	}

	if (t_html) && (!t_body) return;

	if (line) && (!anchor)

		start_x = stolbec * list.font_w + body_magrin * DrawBuf.zoom + list.x;

		start_y = stroka * list.item_h + body_magrin;

		stolbec_len = strlen(#line) * DrawBuf.zoom;

		line_length = stolbec_len * list.font_w;

		if (style.h) stroka++;

		if (style.b) WriteBufText(start_x+1, start_y, list.font_type, text_colors[text_color_index], #line, buf_data);

		if (style.i) { stolbec++; DrawBuf.Skew(start_x, start_y, line_length, list.item_h); } // bug with zoom>1

		if (style.s) DrawBuf.DrawBar(start_x, list.item_h / 2 - DrawBuf.zoom + start_y, line_length, DrawBuf.zoom, text_colors[text_color_index]);

		if (style.u) DrawBuf.DrawBar(start_x, list.item_h - DrawBuf.zoom - DrawBuf.zoom + start_y, line_length, DrawBuf.zoom, text_colors[text_color_index]);

		if (link) {

			DrawBuf.DrawBar(start_x, list.item_h*style.h + list.item_h - DrawBuf.zoom - DrawBuf.zoom + start_y, line_length, DrawBuf.zoom, text_colors[text_color_index]);

			PageLinks.AddText(#line, line_length, list.item_h*style.h + list.item_h, UNDERLINE);

		}

		stolbec += stolbec_len;

	}

}

//============================================================================================

void TWebBrowser::LoadInternalPage(dword bufpos, in_filesize){

	bufsize = in_filesize;

	bufpointer = bufpos;

	Prepare();

}

//============================================================================================

void TWebBrowser::Prepare(){

	word bukva[2];

	int j;

	byte ignor_param;

	dword bufpos;

	int line_len;

	style.b = style.i = style.u = style.s = style.h = style.blq = t_html = t_body =

	style.li = link = ignor_text = text_color_index = text_colors[0] = style.li_tab = 0;

	style.align = ALIGN_LEFT;

	link_color_inactive = 0x0000FF;

	link_color_active = 0xFF0000;

	bg_color = block_bg_color = 0xFFFFFF;

	DrawBuf.Fill(bg_color);

	PageLinks.Clear();

	strcpy(#header, #version);

	stroka = -list.first;

	stolbec = 0;

	line = 0;

	//for plaint text use CP866 for other UTF

	if (strstri(bufpointer, "html"))

	{

		style.pre = 0;

		cur_encoding = CH_NULL;

	}

	else

	{

		style.pre = 1;

		cur_encoding = CH_NULL;

	}

	for (bufpos=bufpointer ; (bufpos < bufpointer+bufsize) && (ESBYTE[bufpos]!=0) ; bufpos++;)

	{

		if (ignor_text) && (ESBYTE[bufpos]!='<') continue;

		bukva = ESBYTE[bufpos];

		switch (bukva)

		{

		case 0x0a:

			if (style.pre)

			{

				DrawStyle();

				NewLine();

				break;

			}

		case '\9':

			if (style.pre) //otherwise go to 0x0d

			{

				tab_len = strlen(#line) % 4;

				if (!tab_len) tab_len = 4;

				for (j=0; j

				break;

			}

			goto DEFAULT_MARK;

		case '&': //  and so on

			bufpos++;

			tag=0;

			for (j=0; (ESBYTE[bufpos]<>';') && (j<7);   j++, bufpos++;)

			{

				bukva = ESBYTE[bufpos];

				chrcat(#tag, bukva);

			}

			if (bukva = GetUnicodeSymbol()) goto DEFAULT_MARK;

			break;

		case '<':

			bufpos++;

			if (!strncmp(bufpos,"!--",3))

			{

				if (!strncmp(bufpos,"-->",3)) || (bufpointer + bufsize <= bufpos) break;

				bufpos++;

			}

			tag = attr = tagparam = ignor_param = NULL;

			while (ESBYTE[bufpos] !='>') && (bufpos < bufpointer + bufsize) //ïîëó÷àåì òåã è åãî ïàðàìåòðû

			{

				bukva = ESBYTE[bufpos];

				if (bukva == '\9') || (bukva == '\x0a') || (bukva == '\x0d') bukva = ' ';

				if (!ignor_param) && (bukva <>' ')

				{

					if (strlen(#tag)+1

				}

				else

				{

					ignor_param = true;

					if (!ignor_text) && (strlen(#tagparam)+1

				}

				bufpos++;

			}

			strlwr(#tag);

			if (tag[strlen(#tag)-1]=='/') tag[strlen(#tag)-1]=NULL; //for br/

			Perenos();

			DrawStyle();

			line = NULL;

			if (tag) SetStyle();

			strlcpy(#oldtag, #tag, sizeof(oldtag));

			tag = attr = tagparam = ignor_param = NULL;

			break;

		default:

			DEFAULT_MARK:

			if (bukva<=15) bukva=' ';

			line_len = strlen(#line);

			if (!style.pre) && (bukva == ' ')

			{

				if (line[line_len-1]==' ') break; //no double spaces

				if (!stolbec) && (!line) break; //no paces at the beginning of the line

			}

			if (line_len < sizeof(line)) chrcat(#line, bukva);

			Perenos();

		}

	}

	DrawStyle();

	NewLine();

	if (list.first == 0) list.count = stroka;

	DrawPage();

	if (anchor)

	{

		anchor=NULL;

		list.first=anchor_line_num;

		Prepare();

	}

}

//============================================================================================

void TWebBrowser::Perenos()

{

	int perenos_num;

	char new_line_text[4096];

	if (strlen(#line)*DrawBuf.zoom + stolbec < list.column_max) return;

	perenos_num = strrchr(#line, ' ');

	if (!perenos_num) && (strlen(#line)*DrawBuf.zoom>list.column_max) perenos_num=list.column_max/DrawBuf.zoom;

	strcpy(#new_line_text, #line + perenos_num);

	line[perenos_num] = 0x00;

	DrawStyle();

	strcpy(#line, #new_line_text);

	NewLine();

}

//============================================================================================

void TWebBrowser::SetStyle() {

	int left1 = 5 + list.x;

	int top1 = stroka * list.item_h + list.y + 5;

	byte opened;

	byte meta_encoding;

	if (tag[0] == '/')

	{

		 opened = 0;

		 strcpy(#tag, #tag+1);

	}

	else opened = 1;

	if (istag("html")) {

		t_html = opened;

		return;

	}

	if (istag("script")) || (istag("style")) || (istag("binary")) || (istag("select")) { ignor_text = opened; return; }

	if (istag("form")) if (!opened) ignor_text = false;

	if(istag("title")) {

		if (opened) header=NULL;

		else if (!stroka) DrawTitle(#header);

		return;

	}

	if (ignor_text) return;

	IF(istag("q"))

		if (opened)	strcat(#line, " \"");

		if (!opened) strcat(#line, "\" ");

		return;

	}

	if (anchor) if (isattr("id=")) || (isattr("name=")) { //very bad: if the tag is not the last it wound work

		if (!strcmp(#anchor, #val))	anchor_line_num=list.first+stroka;

	}

	if (istag("body")) {

		t_body = opened;

		do{

			if (isattr("link=")) link_color_inactive = GetColor(#val);

			if (isattr("alink=")) link_color_active = GetColor(#val);

			if (isattr("text=")) text_colors[0]=GetColor(#val);

			if (isattr("bgcolor="))

			{

				bg_color = block_bg_color = GetColor(#val);

				DrawBuf.Fill(bg_color);

			}

		} while(GetNextParam());

		if (opened) && (cur_encoding==CH_NULL) debugln("Document has no information about encoding, UTF will be used");

		return;

	}

	if (istag("a")) {

		if (opened)

		{

			if (link) IF(text_color_index > 0) text_color_index--; //åñëè ïðåäûäóùèé òåã à íå áûë çàêðûò

			do{

				if (isattr("href=")) && (!strstr(#val,"javascript:"))

				{

					text_color_index++;

					text_colors[text_color_index] = text_colors[text_color_index-1];

					link = 1;

					text_colors[text_color_index] = link_color_inactive;

					PageLinks.AddLink(#val, DrawBuf.zoom * stolbec * list.font_w + left1, top1-DrawBuf.zoom);

				}

			} while(GetNextParam());

		}

		else {

			link = 0;

			IF(text_color_index > 0) text_color_index--;

		}

		return;

	}

	if (istag("font")) {

		if (opened)

		{

			text_color_index++;

			text_colors[text_color_index] = text_colors[text_color_index-1];

			do{

				if (isattr("color=")) text_colors[text_color_index] = GetColor(#val);

			} while(GetNextParam());

		}

		else if (text_color_index > 0) text_color_index--;

		return;

	}

	if (istag("bg")) {

		if (opened) {block_bg_color=GetColor(#val); NewLine();}

		if (!opened) block_bg_color=bg_color;

	}

	if (istag("div")) || (istag("header")) || (istag("article")) || (istag("footer")) {

		IF(oldtag[0] != 'h') NewLine();

		return;

	}

	if (istag("p")) {

		IF(oldtag[0] == 'h') return;

		NewLine();

		IF(opened) NewLine();

		return;

	}

	if (istag("br")) { NewLine(); return; }

	if (istag("tr")) { if (opened) NewLine(); return; }

	if (istag("b")) || (istag("strong")) || (istag("big")) { style.b = opened; return; }

	if (istag("i")) || (istag("em")) || (istag("subtitle")) { style.i=opened; return; }

	if (istag("u")) || (istag("ins")) { style.u=opened; return;}

	if (istag("s")) || (istag("strike")) || (istag("del")) { style.s=opened; return; }

	if (istag("dd")) { stolbec += 5; return; }

	if (istag("blockquote")) { style.blq = opened; return; }

	if (istag("pre")) || (istag("code")) { style.pre = opened; return; }

	if (istag("img")) { ImgCache.Images( left1, top1, WB1.list.w); return; }

	if (istag("h1")) || (istag("h2")) || (istag("h3")) || (istag("h4")) || (istag("caption")) {

		style.h = opened;

		NewLine();

		if (opened)

		{

			WB1.DrawBuf.zoom=2;

			WB1.list.font_type |= 10011001b;

			if (isattr("align=")) && (isval("center")) style.align = ALIGN_CENTER;

			if (isattr("align=")) && (isval("right")) style.align = ALIGN_RIGHT;

			if (stroka>1) NewLine();

		}

		else

		{

			WB1.DrawBuf.zoom=1;

			WB1.list.font_type = 10011000b;

			style.align = ALIGN_LEFT;

		}

		return;

	}

	if (istag("dt")) {

		style.li = opened;

		if (opened) NewLine();

		return;

	}

	if (istag("li")) || (istag("dt"))

	{

		style.li = opened;

		if (opened)

		{

			NewLine();

			DrawBuf.DrawBar(style.li_tab * 5 * list.font_w * DrawBuf.zoom + list.x, stroka +1 * list.item_h - 3

			 - DrawBuf.zoom - DrawBuf.zoom, DrawBuf.zoom*2, DrawBuf.zoom*2, 0x454545);

		}

		return;

	}

	if (istag("ul")) || (istag("ol")) {

		if (!opened)

		{

			style.li = opened;

			style.li_tab--;

			NewLine();

		}

		else style.li_tab++;

	}

	if (istag("hr")) {

		if (isattr("color=")) EDI = GetColor(#val); else EDI = 0x999999;

		$push edi;

		NewLine();

		$pop edi;

		DrawBuf.DrawBar(5, list.item_h*stroka+4, list.w-10, 1, EDI);

		NewLine();

		return;

	}

	if (istag("meta")) || (istag("?xml")) {

		meta_encoding = CH_NULL;

		do{

			if (isattr("charset=")) || (isattr("content=")) || (isattr("encoding="))

			{

				strcpy(#val, #val[strrchr(#val, '=')]); //search in content=

				strlwr(#val);

				if      (isval("utf-8"))        || (isval("utf8"))        meta_encoding = CH_UTF8;

				else if (isval("koi8-r"))       || (isval("koi8-u"))      meta_encoding = CH_KOI8;

				else if (isval("windows-1251")) || (isval("windows1251")) meta_encoding = CH_CP1251;

				else if (isval("iso-8859-5"))   || (isval("iso8859-5"))   meta_encoding = CH_ISO8859_5;

				else if (isval("dos"))          || (isval("cp-866"))      meta_encoding = CH_CP866;

			}

		} while(GetNextParam());

		if (meta_encoding!=CH_NULL) BufEncode(meta_encoding);

		return;

	}

}

void TWebBrowser::BufEncode(int set_new_encoding)

	int bufpointer_realsize;

	if (o_bufpointer==0)

	{

		o_bufpointer = malloc(bufsize);

		strcpy(o_bufpointer, bufpointer);

	}

	else

	{

		strcpy(bufpointer, o_bufpointer);

	}

	if (cur_encoding!=set_new_encoding) {

		cur_encoding = set_new_encoding;

		debugln(charsets[cur_encoding]);

		bufpointer = ChangeCharset(charsets[cur_encoding], "CP866", bufpointer);

	}

}

//============================================================================================

void TWebBrowser::DrawScroller()

{

	scroll_wv.max_area = list.count;

	scroll_wv.cur_area = list.visible;

	scroll_wv.position = list.first;

	scroll_wv.all_redraw = 0;

	scroll_wv.start_y = list.y;

	scroll_wv.size_y = list.h;

	scrollbar_v_draw(#scroll_wv);

//============================================================================================

void TWebBrowser::NewLine()

{

	int onleft, ontop;

	onleft = list.x + 5;

	if (t_html) && (!t_body) return;

	if (block_bg_color!=bg_color) DrawBuf.DrawBar(0, stroka+1*list.item_h+5, DrawBuf.bufw, list.item_h, block_bg_color);

	if (stroka * list.item_h + 5 >= 0) && ( stroka + 1 * list.item_h + 5 < list.h) && (!anchor)

	{

		if (style.align == ALIGN_CENTER) && (DrawBuf.zoom==1) DrawBuf.AlignCenter(onleft,ontop,list.w,list.item_h,stolbec * list.font_w);

		if (style.align == ALIGN_RIGHT) && (DrawBuf.zoom==1)  DrawBuf.AlignRight(onleft,ontop,list.w,list.item_h,stolbec * list.font_w);

	}

	stroka++;

	if (style.blq) stolbec = 6; else stolbec = 0;

	if (style.li) stolbec = style.li_tab * 5;

}

//============================================================================================

int istag(dword text) { if (!strcmp(#tag,text)) return true; else return false; }

int isattr(dword text) { if (!strcmp(#attr,text)) return true; else return false; }

int isval(dword text) { if (!strcmp(#val,text)) return true; else return false; }

//============================================================================================

void TWebBrowser::DrawPage()

{

	PutPaletteImage(list.first * list.item_h * DrawBuf.bufw * 4 + buf_data+8, DrawBuf.bufw, list.h, DrawBuf.bufx, DrawBuf.bufy, 32, 0);

	DrawScroller();

}

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