forked from KolibriOS/kolibrios
387 lines
9.4 KiB
C
387 lines
9.4 KiB
C
/*========================================================
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= =
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= STYLE =
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= =
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========================================================*/
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#define HTML_PADDING_X 8;
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#define HTML_PADDING_Y 5;
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struct _style {
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bool bold, underlined, italic, strike;
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bool h1, h2, h3, h4, h5, h6;
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bool a;
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bool pre;
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bool ignore;
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bool body;
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dword color;
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void clear();
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};
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void _style::clear()
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{
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bold=underlined=italic=strike=0;
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h1=h2=h3=h4=h5=h6=0;
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a=0;
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pre=0;
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ignore=0;
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color=0;
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body=0;
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}
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/*========================================================
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= =
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= TAG =
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= =
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========================================================*/
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struct _tag {
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dword start;
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dword end;
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dword name;
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bool opens;
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dword attribute;
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dword value;
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void parse();
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int nameis();
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};
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void _tag::parse()
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{
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dword START = start;
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calc(1); //WTF
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if (ESBYTE[START]=='/') {
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START++;
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opens = false;
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} else opens = true;
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name = START;
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while ( (START < end) && (!__isWhite(ESBYTE[START])) ) {
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START++;
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}
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if (START!=end) ESBYTE[START] = '\0';
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START++;
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strlwr(name);
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start = START;
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}
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int _tag::nameis(dword _in_tag_name)
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{
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if (name) && (streq(_in_tag_name, name)) return true;
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return false;
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}
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/*========================================================
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= =
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= DRAW =
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= =
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========================================================*/
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struct _draw
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{
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dword x;
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dword y;
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void init();
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void line_break();
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};
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void _draw::init()
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{
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x = HTML_PADDING_X;
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y = HTML_PADDING_Y;
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}
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void _draw::line_break()
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{
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y+= list.item_h;
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x = HTML_PADDING_X;
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}
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/*========================================================
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= =
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= BUF =
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= =
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========================================================*/
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struct _buf
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{
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dword pointer;
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dword len;
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dword start;
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dword end;
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void init();
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};
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void _buf::init(dword _buf_pointer, _buf_len)
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{
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pointer = _buf_pointer;
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len = _buf_len;
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start = malloc(len);
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end = start + len;
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strlcpy(start, pointer, len);
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}
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/*========================================================
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= =
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= TEXT =
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= =
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========================================================*/
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struct _text {
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int size_pt_change;
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dword start;
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dword end;
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dword width;
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};
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/*
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dword line_break;
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byte char_holder;
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if (ESBYTE[buf.pos]==0x0A) {
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if (style.pre) {
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draw.line_break();
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continue;
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}
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}
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while (get_label_len(text.start) + draw.x + 30 > list.w)
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{
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for (line_break=tag.start-1; line_break>text.start; line_break--;)
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{
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char_holder = ESBYTE[line_break]; //set line end
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ESBYTE[line_break] = '\0';
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if (get_label_len(text.start) + draw.x + 30 <= list.w) break;
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ESBYTE[line_break] = char_holder; //restore line
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}
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if (draw_on) {
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if (style.a) {
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link.add(draw.x,draw.y + size_pt_change,get_label_len(text.start),list.item_h,text.start," ");
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label_draw_bar(draw.x, draw.y+kfont.size.pt+1, get_label_len(text.start), style.color);
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}
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WriteTextIntoBuf(draw.x, draw.y, style.color, text.start);
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}
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draw.x+=char_width[' '];
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ESBYTE[line_break] = char_holder; //restore line
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text.start = line_break;
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draw.line_break();
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}
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if (draw_on) {
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if (style.a) {
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link.add(draw.x,draw.y + size_pt_change,get_label_len(text.start),list.item_h,text.start," ");
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label_draw_bar(draw.x, draw.y+kfont.size.pt+1, get_label_len(text.start), style.color);
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}
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WriteTextIntoBuf(draw.x, draw.y, style.color, text.start);
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}
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draw.x += char_width[' '];
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draw.x += get_label_len(text.start);
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*/
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/*========================================================
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= =
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= DOM =
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= =
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========================================================*/
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struct _dom
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{
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_tag tag;
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_style style;
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_draw draw;
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_buf buf;
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_text text;
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_canvas canvas;
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void init();
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void apply_text();
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void set_style();
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void parse();
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};
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void _dom::init()
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{
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style.clear();
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draw.init();
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buf.init(io.buffer_data, strlen(io.buffer_data));
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}
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void _dom::set_style()
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{
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if (tag.nameis("body")) style.body = tag.opens;
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if (tag.nameis("b")) style.bold = tag.opens;
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if (tag.nameis("i")) style.italic = tag.opens;
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if (tag.nameis("s")) style.strike = tag.opens;
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if (tag.nameis("pre")) style.pre = tag.opens;
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if (tag.nameis("style")) style.ignore = tag.opens;
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if (tag.nameis("a")) {
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style.a = tag.opens;
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if (tag.opens) style.color=0x0000FF; else style.color=0;
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}
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if (tag.nameis("br"))
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|| (tag.nameis("p"))
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|| (tag.nameis("div"))
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|| (tag.nameis("tr")) {
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draw.line_break();
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return;
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}
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if (tag.nameis("li")) && (tag.opens) {
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draw.line_break();
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return;
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}
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if (tag.nameis("td")) && (tag.opens) {
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draw.line_break();
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return;
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}
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/*
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if (tag.nameis("title")) {
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strcpy(#title, text.start);
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strcat(#title, " - Aelia");
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DrawTitle(#title);
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}
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if (tag.nameis("h1")) || (tag.nameis("/h1")) ||
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(tag.nameis("h2")) || (tag.nameis("/h2")) ||
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(tag.nameis("h3")) || (tag.nameis("/h3")) {
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if (tag.nameis("h1")) {
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text.size_pt_change = 8;
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} else if (tag.nameis("/h1")) {
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text.size_pt_change = -8;
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} else if (tag.nameis("h2")) {
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text.size_pt_change = 6;
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} else if (tag.nameis("/h2")) {
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text.size_pt_change = -6;
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} else if (tag.nameis("h3")) {
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text.size_pt_change = 4;
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} else if (tag.nameis("/h3")) {
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text.size_pt_change = -4;
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}
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kfont.size.pt += text.size_pt_change;
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get_label_symbols_size();
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if (text.size_pt_change > 0) {
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draw.y+= list.item_h;//что если будет очень длинная строка в теге?
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} else {//коммент выше и коммент ниже связаны
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draw.y+= list.item_h - text.size_pt_change;//не очень понятна логика этого места
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text.size_pt_change = 0;
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}
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draw.x = HTML_PADDING_X;
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return;
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}
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*/
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}
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void _dom::apply_text()
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{
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if (kfont.size.height) && (style.body) {
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kfont.bold = style.bold;
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canvas.write_text(draw.x, draw.y, style.color, text.start);
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if (style.a) {
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canvas.draw_hor_line(draw.x, draw.y + list.item_h-2, kfont.get_label_width(text.start), style.color);
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link.add(draw.x, draw.y, kfont.get_label_width(text.start), list.item_h, text.start, "http://kolibrios.org");
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}
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}
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}
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void _dom::parse()
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{
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dword i;
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init();
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text.start = buf.start;
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tag.start = buf.start;
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for ( i=buf.start; i<buf.end; i++ )
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{
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if (ESBYTE[i]=='<') {
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tag.start = i+1;
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text.end = i-1;
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ESBYTE[i] = '\0';
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apply_text();
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}
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if (ESBYTE[i]=='>') {
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tag.end = i-1;
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text.start = i+1;
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ESBYTE[i] = '\0';
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tag.parse();
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set_style();
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}
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}
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free(buf.start);
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if (!kfont.size.height) {
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list.count = draw.y/list.item_h+3;
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if (list.count < list.visible) list.count = list.visible;
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kfont.size.height = list.count+5*list.item_h;
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kfont.raw_size = 0;
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parse();
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}
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}
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/*========================================================
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= =
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= PREPARE =
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= =
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========================================================*/
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void PreparePage()
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{
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_dom dom;
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strcpy(#title, history.current()+strrchr(history.current(),'/'));
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ChangeCharset(encoding, "CP866", io.buffer_data);
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link.clear();
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kfont.size.height = 0;
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if ( strstri(io.buffer_data, "<html") == -1 ) ParseTxt(); else dom.parse();
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kfont.ApplySmooth();
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DrawPage();
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}
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void ParseTxt()
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{
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_canvas canvas;
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byte ch, zeroch=0;
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dword bufoff, buflen, line_start, srch_pos;
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int stroka_y=5, line_length=0;
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line_start=io.buffer_data;
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buflen = strlen(io.buffer_data) + io.buffer_data;
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for (bufoff=io.buffer_data; bufoff<buflen; bufoff++)
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{
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ch = ESBYTE[bufoff];
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line_length += kfont_char_width[ch];
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if (line_length>=list.w-30) || (ch==10) {
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srch_pos = bufoff;
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loop()
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{
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if (__isWhite(ESBYTE[srch_pos])) { bufoff=srch_pos+1; break; } //normal word-break
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if (srch_pos == line_start) break; //no white space found in whole line
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srch_pos--;
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}
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if (kfont.size.height) {
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ESBYTE[bufoff] >< zeroch; //set line end
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canvas.write_text(8, stroka_y, 0x000000, line_start);
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ESBYTE[bufoff] >< zeroch; //restore line
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}
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stroka_y += list.item_h;
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line_start = bufoff;
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line_length = 0;
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}
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}
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if (!kfont.size.height) {
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list.count = stroka_y/list.item_h+3;
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if (list.count < list.visible) list.count = list.visible;
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kfont.size.height = list.count+5*list.item_h;
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kfont.raw_size = 0;
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ParseTxt();
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}
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else canvas.write_text(8, stroka_y, 0x000000, line_start);
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} |