forked from KolibriOS/kolibrios
484 lines
13 KiB
C
484 lines
13 KiB
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};
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enum { ALIGN_LEFT, ALIGN_CENTER, ALIGN_RIGHT};
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struct _style {
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byte
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b, u, s, h,
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pre,
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blq,
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li,
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li_tab,
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align;
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};
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struct TWebBrowser {
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llist list;
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_style style;
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DrawBufer DrawBuf;
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int zoom;
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void Prepare();
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void SetStyle();
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void DrawStyle();
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void DrawPage();
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void DrawScroller();
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void LoadInternalPage();
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void NewLine();
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void Perenos();
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void BufEncode();
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} WB1;
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byte
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link,
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ignor_text,
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cur_encoding,
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t_html,
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t_body;
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dword bufpointer=0;
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dword o_bufpointer=0;
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dword bufsize=0;
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dword text_colors[300];
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dword text_color_index;
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dword link_color_inactive;
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dword link_color_active;
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dword bg_color;
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int draw_y;
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int stolbec;
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int tab_len;
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int body_magrin=5;
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int basic_line_h=22;
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char URL[10000];
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char header[2048];
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char line[500];
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char tagparam[10000];
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char tag[100];
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char oldtag[100];
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char attr[1200];
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char val[4096];
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#include "..\TWB\absolute_url.h"
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#include "..\TWB\links.h"
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#include "..\TWB\anchors.h"
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#include "..\TWB\colors.h"
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#include "..\TWB\unicode_tags.h"
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#include "..\TWB\img_cache.h"
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#include "..\TWB\parce_tag.h"
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//============================================================================================
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void TWebBrowser::DrawStyle()
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{
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dword start_x, line_length, stolbec_len;
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if (!header)
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{
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strcpy(#header, #line);
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line = 0;
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return;
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}
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if (t_html) && (!t_body) return;
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if (line)
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{
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start_x = stolbec * list.font_w + body_magrin + list.x;
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stolbec_len = strlen(#line) * zoom;
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line_length = stolbec_len * list.font_w;
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DrawBuf.WriteText(start_x, draw_y, list.font_type, text_colors[text_color_index], #line);
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if (style.b) DrawBuf.WriteText(start_x+1, draw_y, list.font_type, text_colors[text_color_index], #line);
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if (style.s) DrawBuf.DrawBar(start_x, list.item_h / 2 - zoom + draw_y, line_length, zoom, text_colors[text_color_index]);
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if (style.u) DrawBuf.DrawBar(start_x, list.item_h - zoom - zoom + draw_y, line_length, zoom, text_colors[text_color_index]);
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if (link) {
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DrawBuf.DrawBar(start_x, draw_y + list.item_h - calc(zoom*2), line_length, zoom, text_colors[text_color_index]);
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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
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}
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stolbec += stolbec_len;
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}
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}
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//============================================================================================
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void TWebBrowser::LoadInternalPage(dword bufpos, in_filesize){
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bufsize = in_filesize;
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bufpointer = bufpos;
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Prepare();
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}
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//============================================================================================
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void TWebBrowser::Prepare(){
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word bukva[2];
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dword j;
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byte ignor_param;
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dword bufpos;
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dword line_len;
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style.b = style.u = style.s = style.h = style.blq = t_html = t_body =
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style.li = link = ignor_text = text_color_index = text_colors[0] = style.li_tab = 0;
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style.align = ALIGN_LEFT;
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link_color_inactive = 0x0000FF;
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link_color_active = 0xFF0000;
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bg_color = 0xFFFFFF;
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DrawBuf.Fill(0, bg_color);
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PageLinks.Clear();
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strcpy(#header, #version);
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draw_y = body_magrin;
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stolbec = 0;
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line = 0;
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zoom = 1;
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//for plaint text use CP866 for other UTF
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if (strstri(bufpointer, "html")!=-1)
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{
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debugln("<html> found");
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style.pre = false;
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cur_encoding = CH_NULL;
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}
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else
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{
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debugln("no <html>");
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style.pre = true;
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cur_encoding = CH_NULL;
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}
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for (bufpos=bufpointer ; (bufpos < bufpointer+bufsize) && (ESBYTE[bufpos]!=0) ; bufpos++;)
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{
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if (ignor_text) && (ESBYTE[bufpos]!='<') continue;
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bukva = ESBYTE[bufpos];
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switch (bukva)
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{
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case 0x0a:
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if (style.pre)
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{
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DrawStyle();
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line = NULL;
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NewLine();
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break;
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}
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goto DEFAULT_MARK;
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case '\9':
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if (style.pre) //otherwise go to 0x0d
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{
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tab_len = strlen(#line) % 4;
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if (!tab_len) tab_len = 4;
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for (j=0; j<tab_len; j++;) chrcat(#line,' ');
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break;
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}
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goto DEFAULT_MARK;
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case '&': // and so on
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bufpos++;
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tag=0;
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for (j=0; (ESBYTE[bufpos]<>';') && (j<7); j++, bufpos++;)
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{
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bukva = ESBYTE[bufpos];
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chrcat(#tag, bukva);
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}
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if (bukva = GetUnicodeSymbol()) goto DEFAULT_MARK;
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break;
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case '<':
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bufpos++;
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if (!strncmp(bufpos,"!--",3))
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{
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bufpos+=3;
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while (strncmp(bufpos,"-->",3)!=0) && (bufpos < bufpointer + bufsize)
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{
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bufpos++;
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}
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bufpos+=3;
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break;
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}
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tag = attr = tagparam = ignor_param = NULL;
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while (ESBYTE[bufpos] !='>') && (bufpos < bufpointer + bufsize) //ïîëó÷àåì òåã è åãî ïàðàìåòðû
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{
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bukva = ESBYTE[bufpos];
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if (bukva == '\9') || (bukva == '\x0a') || (bukva == '\x0d') bukva = ' ';
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if (!ignor_param) && (bukva <>' ')
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{
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if (strlen(#tag)+1<sizeof(tag)) chrcat(#tag, bukva);
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}
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else
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{
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ignor_param = true;
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if (!ignor_text) && (strlen(#tagparam)+1<sizeof(tagparam)) strcat(#tagparam, #bukva);
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}
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bufpos++;
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}
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strlwr(#tag);
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if (tag[strlen(#tag)-1]=='/') tag[strlen(#tag)-1]=NULL; //for br/
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if (tagparam) GetNextParam();
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Perenos();
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DrawStyle();
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line = NULL;
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if (tag) SetStyle();
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strlcpy(#oldtag, #tag, sizeof(oldtag));
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tag = attr = tagparam = ignor_param = NULL;
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break;
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default:
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DEFAULT_MARK:
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if (bukva<=15) bukva=' ';
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line_len = strlen(#line);
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if (!style.pre) && (bukva == ' ')
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{
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if (line[line_len-1]==' ') break; //no double spaces
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if (!stolbec) && (!line) break; //no paces at the beginning of the line
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}
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if (line_len < sizeof(line)) chrcat(#line, bukva);
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Perenos();
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}
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}
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DrawStyle();
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NewLine();
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if (list.first == 0) list.count = draw_y;
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DrawPage();
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}
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//============================================================================================
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void TWebBrowser::Perenos()
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{
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int perenos_num;
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char new_line_text[4096];
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if (strlen(#line)*zoom + stolbec < list.column_max) return;
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perenos_num = strrchr(#line, ' ');
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if (!perenos_num) && (strlen(#line)*zoom>list.column_max) perenos_num=list.column_max/zoom;
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strcpy(#new_line_text, #line + perenos_num);
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line[perenos_num] = 0x00;
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DrawStyle();
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strcpy(#line, #new_line_text);
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NewLine();
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}
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//============================================================================================
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void TWebBrowser::SetStyle() {
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int left1 = body_magrin + list.x;
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byte opened;
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byte meta_encoding;
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if (tag[0] == '/')
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{
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opened = 0;
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strcpy(#tag, #tag+1);
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}
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else opened = 1;
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if (istag("html")) {
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t_html = opened;
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return;
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}
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if (istag("script")) || (istag("style")) || (istag("binary")) || (istag("select")) { ignor_text = opened; return; }
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if (istag("form")) if (!opened) ignor_text = false;
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if(istag("title")) {
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if (opened) header=NULL;
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return;
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}
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if (ignor_text) return;
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IF(istag("q"))
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{
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if (opened) strcat(#line, " \"");
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if (!opened) strcat(#line, "\" ");
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return;
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}
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if (isattr("id=")) || (isattr("name=")) { // TO FIX: works only if the param is the last
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anchors.add(#val, draw_y);
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}
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if (istag("body")) {
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t_body = opened;
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do{
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if (isattr("link=")) link_color_inactive = GetColor(#val);
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if (isattr("alink=")) link_color_active = GetColor(#val);
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if (isattr("text=")) text_colors[0]=GetColor(#val);
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if (isattr("bgcolor="))
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{
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bg_color = GetColor(#val);
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DrawBuf.Fill(0, bg_color);
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}
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} while(GetNextParam());
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if (opened) && (cur_encoding==CH_NULL) {
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cur_encoding = CH_UTF8;
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debugln("Document has no information about encoding, UTF will be used");
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}
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if (opened) {
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if (strcmp(#header, #version) != 0) {
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ChangeCharset(charsets[cur_encoding], "CP866", #header);
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sprintf(#header, "%s - %s", #header, #version);
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}
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DrawTitle(#header);
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}
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return;
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}
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if (istag("a")) {
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if (opened)
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{
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if (link) IF(text_color_index > 0) text_color_index--; //åñëè ïðåäûäóùèé òåã à íå áûë çàêðûò
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do{
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if (isattr("href=")) && (!strstr(#val,"javascript:"))
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{
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text_color_index++;
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text_colors[text_color_index] = text_colors[text_color_index-1];
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link = 1;
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text_colors[text_color_index] = link_color_inactive;
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PageLinks.AddLink(#val);
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}
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} while(GetNextParam());
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}
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else {
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link = 0;
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IF(text_color_index > 0) text_color_index--;
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}
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return;
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}
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if (istag("font")) {
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if (opened)
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{
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text_color_index++;
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text_colors[text_color_index] = text_colors[text_color_index-1];
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do{
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if (isattr("color=")) text_colors[text_color_index] = GetColor(#val);
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} while(GetNextParam());
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}
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else if (text_color_index > 0) text_color_index--;
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return;
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}
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if (istag("div")) || (istag("header")) || (istag("article")) || (istag("footer")) {
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IF(oldtag[0] != 'h') NewLine();
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return;
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}
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if (istag("p")) {
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IF(oldtag[0] == 'h') return;
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NewLine();
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IF(opened) NewLine();
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return;
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}
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if (istag("br")) { NewLine(); return; }
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if (istag("tr")) { if (opened) NewLine(); return; }
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if (istag("b")) || (istag("strong")) || (istag("big")) { style.b = opened; return; }
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if (istag("u")) || (istag("ins")) { style.u=opened; return;}
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if (istag("s")) || (istag("strike")) || (istag("del")) { style.s=opened; return; }
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if (istag("dd")) { stolbec += 5; return; }
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if (istag("blockquote")) { style.blq = opened; return; }
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if (istag("pre")) || (istag("code")) { style.pre = opened; return; }
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if (istag("img")) { ImgCache.Images( left1, draw_y, WB1.list.w); return; }
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if (istag("h1")) || (istag("h2")) || (istag("h3")) || (istag("caption")) {
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style.h = opened;
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if (opened)
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{
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NewLine();
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draw_y += 10;
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WB1.zoom=2;
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WB1.list.font_type |= 10011001b;
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if (isattr("align=")) && (isval("center")) style.align = ALIGN_CENTER;
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if (isattr("align=")) && (isval("right")) style.align = ALIGN_RIGHT;
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list.item_h = basic_line_h * 2;
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}
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else
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{
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NewLine();
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WB1.zoom=1;
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WB1.list.font_type = 10011000b;
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style.align = ALIGN_LEFT;
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list.item_h = basic_line_h;
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}
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return;
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}
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if (istag("dt")) {
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style.li = opened;
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if (opened) NewLine();
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return;
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}
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if (istag("li")) || (istag("dt"))
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{
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style.li = opened;
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if (opened)
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{
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NewLine();
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strcpy(#line, "\31 \0");
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}
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return;
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}
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if (istag("ul")) || (istag("ol")) {
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if (!opened)
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{
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style.li = opened;
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style.li_tab--;
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NewLine();
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}
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else style.li_tab++;
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}
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if (istag("hr")) {
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if (isattr("color=")) EDI = GetColor(#val); else EDI = 0x999999;
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$push edi;
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NewLine();
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$pop edi;
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DrawBuf.DrawBar(5, draw_y - 1, list.w-10, 1, EDI);
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NewLine();
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return;
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}
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if (istag("meta")) || (istag("?xml")) {
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meta_encoding = CH_NULL;
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do{
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if (isattr("charset=")) || (isattr("content=")) || (isattr("encoding="))
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{
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strcpy(#val, #val[strrchr(#val, '=')]); //search in content=
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strlwr(#val);
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if (isval("utf-8")) || (isval("utf8")) meta_encoding = CH_UTF8;
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else if (isval("koi8-r")) || (isval("koi8-u")) meta_encoding = CH_KOI8;
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else if (isval("windows-1251")) || (isval("windows1251")) meta_encoding = CH_CP1251;
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else if (isval("iso-8859-5")) || (isval("iso8859-5")) meta_encoding = CH_ISO8859_5;
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else if (isval("dos")) || (isval("cp-866")) meta_encoding = CH_CP866;
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}
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} while(GetNextParam());
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if (meta_encoding!=CH_NULL) BufEncode(meta_encoding);
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return;
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}
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}
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void TWebBrowser::BufEncode(dword set_new_encoding)
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{
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if (cur_encoding == set_new_encoding) return;
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if (o_bufpointer==0)
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{
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o_bufpointer = malloc(bufsize);
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strcpy(o_bufpointer, bufpointer);
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}
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else
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{
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strcpy(bufpointer, o_bufpointer);
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}
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debugval("cur_encoding ", cur_encoding);
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debugval("set_new_encoding", set_new_encoding);
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cur_encoding = set_new_encoding;
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bufpointer = ChangeCharset(charsets[cur_encoding], "CP866", bufpointer);
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}
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//============================================================================================
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void TWebBrowser::DrawScroller()
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{
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scroll_wv.max_area = list.count;
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scroll_wv.cur_area = list.visible;
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scroll_wv.position = list.first;
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scroll_wv.all_redraw = 0;
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scroll_wv.start_x = list.x + list.w;
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scroll_wv.start_y = list.y;
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scroll_wv.size_y = list.h;
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scrollbar_v_draw(#scroll_wv);
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}
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//============================================================================================
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void TWebBrowser::NewLine()
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{
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dword onleft, ontop;
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if (!stolbec) && (draw_y==body_magrin) return;
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onleft = list.x + body_magrin;
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ontop = draw_y + list.y;
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if (t_html) && (!t_body) return;
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draw_y += list.item_h;
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if (style.blq) stolbec = 6; else stolbec = 0;
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if (style.li) stolbec = style.li_tab * 5;
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}
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//============================================================================================
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bool istag(dword text) { if (!strcmp(#tag,text)) return true; else return false; }
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bool isattr(dword text) { if (!strcmp(#attr,text)) return true; else return false; }
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bool isval(dword text) { if (!strcmp(#val,text)) return true; else return false; }
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//============================================================================================
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void TWebBrowser::DrawPage()
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{
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PutPaletteImage(list.first * DrawBuf.bufw * 4 + buf_data+8, DrawBuf.bufw, list.h, DrawBuf.bufx, DrawBuf.bufy, 32, 0);
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DrawScroller();
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} |