Subversion Repositories Kolibri OS

/*========================================================

=                                                        =

=                        STYLE                           =

=                                                        =

========================================================*/

#define HTML_PADDING_X 8;

#define HTML_PADDING_Y 5;

struct _style {

	bool bold, underlined, italic, strike;

	bool h1, h2, h3, h4, h5, h6;

	bool a;

	bool pre;

	bool ignore;

	bool body;

	dword color;

	void clear();

};

void _style::clear()

{

	bold=underlined=italic=strike=0;

	h1=h2=h3=h4=h5=h6=0;

	a=0;

	pre=0;

	ignore=0;

	color=0;

	body=0;

}

/*========================================================

=                                                        =

=                         TAG                            =

=                                                        =

========================================================*/

struct _tag {

	dword start;

	dword end;

	dword name;

	bool opens;

	dword attribute;

	dword value;

	void parse();

	int nameis();

};

void _tag::parse()

{

	dword START = start;

	calc(1); //WTF

	if (ESBYTE[START]=='/') {

		START++;

		opens = false;

	} else opens = true;

	name = START;

	while ( (START < end) && (!__isWhite(ESBYTE[START])) ) {

		START++;

	}

	if (START!=end) ESBYTE[START] = '\0';

	START++;

	strlwr(name);

	start = START;

}

int _tag::nameis(dword _in_tag_name)

{

	if (name) && (streq(_in_tag_name, name)) return true;

	return false;

}

/*========================================================

=                                                        =

=                         DRAW                           =

=                                                        =

========================================================*/

struct _draw

{

	dword x;

	dword y;

	void init();

	void line_break();

};

void _draw::init()

{

	x = HTML_PADDING_X;

	y = HTML_PADDING_Y;

}

void _draw::line_break()

{

	y+= list.item_h;

	x = HTML_PADDING_X;

}

/*========================================================

=                                                        =

=                         BUF                            =

=                                                        =

========================================================*/

struct _buf

{

	dword pointer;

	dword len;

	dword start;

	dword end;

	void init();

};

void _buf::init(dword _buf_pointer, _buf_len)

{

	pointer = _buf_pointer;

	len = _buf_len;

	start = malloc(len);

	end = start + len;

	strlcpy(start, pointer, len);

}

/*========================================================

=                                                        =

=                         TEXT                           =

=                                                        =

========================================================*/

struct _text {

	int size_pt_change;

	dword start;

	dword end;

	dword width;

};

/*========================================================

=                                                        =

=                         DOM                            =

=                                                        =

========================================================*/

struct _dom

{

	_tag tag;

	_style style;

	_draw draw;

	_buf buf;

	_text text;

	_canvas canvas;

	void init();

	void apply_text();

	void set_style();

	void parse();

};

void _dom::init()

{

	style.clear();

	draw.init();

	buf.init(io.buffer_data, strlen(io.buffer_data));

}

void _dom::set_style()

{

	if (tag.nameis("body")) style.body = tag.opens;

	if (tag.nameis("b")) style.bold = tag.opens;

	if (tag.nameis("i")) style.italic = tag.opens;

	if (tag.nameis("s")) style.strike = tag.opens;

	if (tag.nameis("pre")) style.pre = tag.opens;

	if (tag.nameis("style")) style.ignore = tag.opens;

	if (tag.nameis("a"))  {

		style.a = tag.opens;

		if (tag.opens) style.color=0x0000FF; else style.color=0;

	}

	if (tag.nameis("br"))

		|| (tag.nameis("p"))

		|| (tag.nameis("div"))

		|| (tag.nameis("tr")) {

		draw.line_break();

		return;

	}

	if (tag.nameis("li")) && (tag.opens) {

		draw.line_break();

		return;

	}

	if (tag.nameis("td")) && (tag.opens) {

		draw.line_break();

		return;

	}

	/*

	if (tag.nameis("title")) {

		strcpy(#title, text.start);

		strcat(#title, " - Aelia");

		DrawTitle(#title);

	}

	if 	(tag.nameis("h1")) || (tag.nameis("/h1")) ||

		(tag.nameis("h2")) || (tag.nameis("/h2")) ||

		(tag.nameis("h3")) || (tag.nameis("/h3")) {

		if (tag.nameis("h1")) {

			text.size_pt_change = 8;

		} else if (tag.nameis("/h1")) {

			text.size_pt_change = -8;

		} else if (tag.nameis("h2")) {

			text.size_pt_change = 6;

		} else if (tag.nameis("/h2")) {

			text.size_pt_change = -6;

		} else if (tag.nameis("h3")) {

			text.size_pt_change = 4;

		} else if (tag.nameis("/h3")) {

			text.size_pt_change = -4;

		}

		kfont.size.pt += text.size_pt_change;

		get_label_symbols_size();

		if (text.size_pt_change > 0) {

			draw.y+= list.item_h;//что если будет очень длинная строка в теге?

		} else {//коммент выше и коммент ниже связаны

			draw.y+= list.item_h - text.size_pt_change;//не очень понятна логика этого места

			text.size_pt_change = 0;

		}

		draw.x = HTML_PADDING_X;

		return;

	}

	*/

}

void _dom::apply_text(dword _intext)

{

	int label_w;

	int textlen = strlen(_intext);

	dword curline = malloc(textlen);

	if (!textlen) || (!style.body) return;

	do {

		strlcpy(curline, _intext, textlen);

		label_w = kfont.get_label_width(curline);

		textlen--;

	} while (label_w > list.w - draw.x - 10) && (textlen);

	kfont.bold = style.bold;

	if (kfont.size.height) {

		canvas.write_text(draw.x, draw.y, style.color, curline);

		if (style.a) {

			canvas.draw_hor_line(draw.x, draw.y + list.item_h-2,

				kfont.get_label_width(curline), style.color);

			link.add(draw.x, draw.y, kfont.get_label_width(curline),

				list.item_h, curline, "http://kolibrios.org");

		}

	}

	draw.x += label_w;

	strcpy(curline, _intext + textlen);

	if (textlen) && (textlen < strlen(_intext)-1) {

		draw.x = 0;

		draw.y += list.item_h;

		apply_text(_intext + textlen);

	}

}

void _dom::parse()

{

	dword i;

	init();

	text.start = buf.start;

	tag.start = buf.start;

	for ( i=buf.start; i

	{

		if (ESBYTE[i]=='<') {

			tag.start = i+1;

			text.end = i-1;

			ESBYTE[i] = '\0';

			apply_text(text.start);

		}

		if (ESBYTE[i]=='>') {

			tag.end = i-1;

			text.start = i+1;

			ESBYTE[i] = '\0';

			tag.parse();

			set_style();

		}

	}

	free(buf.start);

	if (!kfont.size.height) {

		list.count = draw.y/list.item_h+3;

		if (list.count < list.visible) list.count = list.visible;

		kfont.size.height = list.count+5*list.item_h;

		kfont.raw_size = 0;

		parse();

	}

}

/*========================================================

=                                                        =

=                       PREPARE                          =

=                                                        =

========================================================*/

void PreparePage()

{

	_dom dom;

	strcpy(#title, history.current()+strrchr(history.current(),'/'));

	ChangeCharset(encoding, "CP866", io.buffer_data);

	link.clear();

	kfont.size.height = 0;

	dom.parse();

	kfont.ApplySmooth();

	DrawPage();

}