kolibrios/programs/cmm/TWB/TWB.c

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scroll_bar scroll_wv = { 15,200,398,44,0,2,115,15,0,0xeeeeee,0xBBBbbb,0xeeeeee,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1};
enum { ALIGN_LEFT, ALIGN_CENTER, ALIGN_RIGHT};
struct _style {
byte
b, u, s, h,
pre,
blq,
li,
li_tab,
align;
};
struct TWebBrowser {
llist list;
_style style;
DrawBufer DrawBuf;
int zoom;
void Prepare();
void SetStyle();
void DrawStyle();
void DrawPage();
void DrawScroller();
void LoadInternalPage();
void NewLine();
void Perenos();
void BufEncode();
} WB1;
byte
link,
ignor_text,
cur_encoding,
t_html,
t_body;
dword bufpointer=0;
dword o_bufpointer=0;
dword bufsize=0;
dword text_colors[300];
dword text_color_index;
dword link_color_inactive;
dword link_color_active;
dword bg_color;
int draw_y;
int stolbec;
int tab_len;
int body_magrin=5;
int basic_line_h=22;
char URL[10000];
char header[2048];
char line[500];
char tagparam[10000];
char tag[100];
char oldtag[100];
char attr[1200];
char val[4096];
#include "..\TWB\absolute_url.h"
#include "..\TWB\links.h"
#include "..\TWB\anchors.h"
#include "..\TWB\colors.h"
#include "..\TWB\unicode_tags.h"
#include "..\TWB\img_cache.h"
#include "..\TWB\parce_tag.h"
//============================================================================================
void TWebBrowser::DrawStyle()
{
dword start_x, line_length, stolbec_len;
if (!header)
{
strcpy(#header, #line);
line = 0;
return;
}
if (t_html) && (!t_body) return;
if (line)
{
start_x = stolbec * list.font_w + body_magrin + list.x;
stolbec_len = strlen(#line) * zoom;
line_length = stolbec_len * list.font_w;
DrawBuf.WriteText(start_x, draw_y, list.font_type, text_colors[text_color_index], #line);
if (style.b) DrawBuf.WriteText(start_x+1, draw_y, list.font_type, text_colors[text_color_index], #line);
if (style.s) DrawBuf.DrawBar(start_x, list.item_h / 2 - zoom + draw_y, line_length, zoom, text_colors[text_color_index]);
if (style.u) DrawBuf.DrawBar(start_x, list.item_h - zoom - zoom + draw_y, line_length, zoom, text_colors[text_color_index]);
if (link) {
DrawBuf.DrawBar(start_x, draw_y + list.item_h - calc(zoom*2), line_length, zoom, text_colors[text_color_index]);
PageLinks.AddText(start_x, draw_y + list.y, line_length, list.item_h - calc(zoom*2), UNDERLINE, zoom); //TODO: set bigger underline_h for style.h
}
stolbec += stolbec_len;
}
}
//============================================================================================
void TWebBrowser::LoadInternalPage(dword bufpos, in_filesize){
bufsize = in_filesize;
bufpointer = bufpos;
Prepare();
}
//============================================================================================
void TWebBrowser::Prepare(){
word bukva[2];
dword j;
byte ignor_param;
dword bufpos;
dword line_len;
style.b = 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 = 0xFFFFFF;
DrawBuf.Fill(0, bg_color);
PageLinks.Clear();
strcpy(#header, #version);
draw_y = body_magrin;
stolbec = 0;
line = 0;
zoom = 1;
//for plaint text use CP866 for other UTF
if (strstri(bufpointer, "html")!=-1)
{
debugln("<html> found");
style.pre = false;
cur_encoding = CH_NULL;
}
else
{
debugln("no <html>");
style.pre = true;
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();
line = NULL;
NewLine();
break;
}
goto DEFAULT_MARK;
case '\9':
if (style.pre) //otherwise go to 0x0d
{
tab_len = strlen(#line) % 4;
if (!tab_len) tab_len = 4;
for (j=0; j<tab_len; j++;) chrcat(#line,' ');
break;
}
goto DEFAULT_MARK;
case '&': //&nbsp; 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))
{
bufpos+=3;
while (strncmp(bufpos,"-->",3)!=0) && (bufpos < bufpointer + bufsize)
{
bufpos++;
}
bufpos+=3;
break;
}
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<sizeof(tag)) chrcat(#tag, bukva);
}
else
{
ignor_param = true;
if (!ignor_text) && (strlen(#tagparam)+1<sizeof(tagparam)) strcat(#tagparam, #bukva);
}
bufpos++;
}
strlwr(#tag);
if (tag[strlen(#tag)-1]=='/') tag[strlen(#tag)-1]=NULL; //for br/
if (tagparam) GetNextParam();
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 = draw_y;
DrawPage();
}
//============================================================================================
void TWebBrowser::Perenos()
{
int perenos_num;
char new_line_text[4096];
if (strlen(#line)*zoom + stolbec < list.column_max) return;
perenos_num = strrchr(#line, ' ');
if (!perenos_num) && (strlen(#line)*zoom>list.column_max) perenos_num=list.column_max/zoom;
strcpy(#new_line_text, #line + perenos_num);
line[perenos_num] = 0x00;
DrawStyle();
strcpy(#line, #new_line_text);
NewLine();
}
//============================================================================================
void TWebBrowser::SetStyle() {
int left1 = body_magrin + list.x;
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;
return;
}
if (ignor_text) return;
IF(istag("q"))
{
if (opened) strcat(#line, " \"");
if (!opened) strcat(#line, "\" ");
return;
}
if (isattr("id=")) || (isattr("name=")) { // TO FIX: works only if the param is the last
anchors.add(#val, draw_y);
}
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 = GetColor(#val);
DrawBuf.Fill(0, bg_color);
}
} while(GetNextParam());
if (opened) && (cur_encoding==CH_NULL) {
cur_encoding = CH_UTF8;
debugln("Document has no information about encoding, UTF will be used");
}
if (opened) {
if (strcmp(#header, #version) != 0) {
ChangeCharset(charsets[cur_encoding], "CP866", #header);
sprintf(#header, "%s - %s", #header, #version);
}
DrawTitle(#header);
}
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);
}
} 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("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("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, draw_y, WB1.list.w); return; }
if (istag("h1")) || (istag("h2")) || (istag("h3")) || (istag("caption")) {
style.h = opened;
if (opened)
{
NewLine();
draw_y += 10;
WB1.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;
list.item_h = basic_line_h * 2;
}
else
{
NewLine();
WB1.zoom=1;
WB1.list.font_type = 10011000b;
style.align = ALIGN_LEFT;
list.item_h = basic_line_h;
}
return;
}
if (istag("dt")) {
style.li = opened;
if (opened) NewLine();
return;
}
if (istag("li")) || (istag("dt"))
{
style.li = opened;
if (opened)
{
NewLine();
strcpy(#line, "\31 \0");
}
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, draw_y - 1, 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(dword set_new_encoding)
{
if (cur_encoding == set_new_encoding) return;
if (o_bufpointer==0)
{
o_bufpointer = malloc(bufsize);
strcpy(o_bufpointer, bufpointer);
}
else
{
strcpy(bufpointer, o_bufpointer);
}
debugval("cur_encoding ", cur_encoding);
debugval("set_new_encoding", set_new_encoding);
cur_encoding = set_new_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_x = list.x + list.w;
scroll_wv.start_y = list.y;
scroll_wv.size_y = list.h;
scrollbar_v_draw(#scroll_wv);
}
//============================================================================================
void TWebBrowser::NewLine()
{
dword onleft, ontop;
if (!stolbec) && (draw_y==body_magrin) return;
onleft = list.x + body_magrin;
ontop = draw_y + list.y;
if (t_html) && (!t_body) return;
draw_y += list.item_h;
if (style.blq) stolbec = 6; else stolbec = 0;
if (style.li) stolbec = style.li_tab * 5;
}
//============================================================================================
bool istag(dword text) { if (!strcmp(#tag,text)) return true; else return false; }
bool isattr(dword text) { if (!strcmp(#attr,text)) return true; else return false; }
bool isval(dword text) { if (!strcmp(#val,text)) return true; else return false; }
//============================================================================================
void TWebBrowser::DrawPage()
{
PutPaletteImage(list.first * DrawBuf.bufw * 4 + buf_data+8, DrawBuf.bufw, list.h, DrawBuf.bufx, DrawBuf.bufy, 32, 0);
DrawScroller();
}