kolibrios/programs/cmm/aelia/prepare_page.h
Kirill Lipatov (Leency) e5231646b3 Aelia 0.2: improve label.smooth function (thanks e-andrew), a very basic html support implemented
git-svn-id: svn://kolibrios.org@6053 a494cfbc-eb01-0410-851d-a64ba20cac60
2016-01-10 22:33:10 +00:00

200 lines
5.8 KiB
C

void PreparePage()
{
list.SetSizes(0, TOOLBAR_H, Form.cwidth-scroll.size_x-1, Form.cheight-TOOLBAR_H, label.size.pt+2);
strcpy(#title, history.current()+strrchr(history.current(),'/'));
//get font chars width, need to increase performance
get_label_symbols_size();
ChangeCharset(charsets[encoding], "CP866", io.buffer_data);
if (strstri(io.buffer_data, "<html")==-1) {
debugln("no <html> found");
DrawProgress(STEP_2_COUNT_PAGE_HEIGHT); ParceTxt(false); //get page height to calculate buffer size
DrawProgress(STEP_3_DRAW_PAGE_INTO_BUFFER); ParceTxt(true); //draw text in buffer
} else {
debugln("<html> tag found");
DrawProgress(STEP_2_COUNT_PAGE_HEIGHT); ParceHtml(false); //get page height to calculate buffer size
DrawProgress(STEP_3_DRAW_PAGE_INTO_BUFFER); ParceHtml(true); //draw text in buffer
}
strcat(#title, " - Aelia");
DrawTitle(#title);
DrawProgress(STEP_4_SMOOTH_FONT); label.apply_smooth();
DrawProgress(STEP_5_STOP); DrawPage();
}
void ParceTxt(byte draw)
{
byte ch, zeroch=0;
dword bufoff, buflen, line_start, srch_pos;
int stroka_y=5, line_length=0;
line_start=io.buffer_data;
buflen = strlen(io.buffer_data) + io.buffer_data;
for (bufoff=io.buffer_data; bufoff<buflen; bufoff++)
{
ch = ESBYTE[bufoff];
line_length += char_width[ch];
if (line_length>=list.w-30) || (ch==10) {
srch_pos = bufoff;
loop()
{
if (__isWhite(ESBYTE[srch_pos])) { bufoff=srch_pos+1; break; } //normal word-break
if (srch_pos == line_start) break; //no white space found in whole line
srch_pos--;
}
if (draw==true) {
ESBYTE[bufoff] >< zeroch; //set line end
WriteTextIntoBuf(8, stroka_y, 0x000000, line_start);
ESBYTE[bufoff] >< zeroch; //restore line
}
stroka_y += list.item_h;
line_start = bufoff;
line_length = 0;
}
}
if (draw==false) {
list.count = stroka_y/list.item_h+2;
if (list.count < list.visible) list.count = list.visible;
label.size.height = list.count+1*list.item_h;
label.raw_size = 0;
}
if (draw==true) WriteTextIntoBuf(8, stroka_y, 0x000000, line_start);
}
/*========================================================
= =
= HTML =
= =
========================================================*/
/* <title> <meta encoding> <a hrf=""> <img src="" alt=""> <h1>..<h6> <b> <u> <s> <pre> */
struct _DOM {
dword start;
dword end;
dword len;
};
struct _style {
bool b, u, i, s;
bool h1, h2, h3, h4, h5, h6;
bool a;
bool pre;
bool ignore;
dword color;
} style;
struct _text {
dword start;
int x, y;
};
struct _tag {
dword start;
dword name;
dword param[10];
dword value[10];
void parce();
int nameis();
};
void _tag::parce()
{
dword o = name = start;
while (ESBYTE[o]!=' ') && (ESBYTE[o]) o++; //searching for a space after tag name
ESBYTE[o] = '\0';
strlwr(name);
}
int _tag::nameis(dword _in_tag_name)
{
if (strcmp(_in_tag_name, name)==0) return true;
return false;
}
#define HTML_PADDING_X 8;
#define HTML_PADDING_Y 5;
void ParceHtml(byte draw)
{
int stroka_x = HTML_PADDING_X;
int stroka_y = HTML_PADDING_Y;
dword line_break;
byte ch, zeroch;
_DOM DOM;
_text text;
_tag tag;
dword DOM_pos;
/* Create DOM */
debugln("creating DOM");
DOM.len = strlen(io.buffer_data);
DOM.start = malloc(DOM.len);
DOM.end = DOM.start + DOM.len;
strlcpy(DOM.start, io.buffer_data, DOM.len);
/* Parce DOM */
debugln("starting DOM parce...");
text.start = DOM_pos;
for (DOM_pos=DOM.start; DOM_pos<DOM.end; DOM_pos++)
{
if (ESBYTE[DOM_pos]==0x0D) || (ESBYTE[DOM_pos]==0x0A) ESBYTE[DOM_pos]=' ';
ch = ESBYTE[DOM_pos];
//debugch(ch);
if (ch=='<') {
ESBYTE[DOM_pos] = '\0';
tag.start = DOM_pos + 1;
if (style.ignore) continue;
if (tag.nameis("title")) {
strcpy(#title, text.start);
continue;
}
while (get_label_len(text.start) + stroka_x + 30 > list.w)
{
//debugln("long line cut");
zeroch = 0;
for (line_break=tag.start-1; line_break>text.start; line_break--;)
{
ESBYTE[line_break] >< zeroch; //set line end
if (get_label_len(text.start) + stroka_x + 30 <= list.w) break;
ESBYTE[line_break] >< zeroch; //restore line
}
if (draw==true) {
if (style.a) label_draw_bar(stroka_x, stroka_y+label.size.pt+1, get_label_len(text.start), style.color);
WriteTextIntoBuf(stroka_x, stroka_y, style.color, text.start);
}
ESBYTE[line_break] >< zeroch; //restore line
text.start = line_break;
stroka_x = HTML_PADDING_X;
stroka_y += list.item_h;
}
if (draw==true) {
if (style.a) label_draw_bar(stroka_x, stroka_y+label.size.pt+1, get_label_len(text.start), style.color);
WriteTextIntoBuf(stroka_x, stroka_y, style.color, text.start);
}
stroka_x += get_label_len(text.start);
}
if (ch=='>') {
ESBYTE[DOM_pos] = '\0';
text.start = DOM_pos + 1;
tag.parce();
if (tag.nameis("br")) || (tag.nameis("p")) || (tag.nameis("div")) || (tag.nameis("h1")) || (tag.nameis("h2")) {
stroka_y+= list.item_h;
stroka_x = HTML_PADDING_X;
continue;
}
if (tag.nameis("script")) || (tag.nameis("style")) style.ignore = true;
if (tag.nameis("/script")) || (tag.nameis("/style")) style.ignore = false;
if (tag.nameis("a")) { style.a = true; style.color=0x0000FF; }
if (tag.nameis("/a")) { style.a = false; style.color=0x000000; }
}
}
if (draw==false) {
list.count = stroka_y/list.item_h+2;
if (list.count < list.visible) list.count = list.visible;
label.size.height = list.count+1*list.item_h;
label.raw_size = 0;
}
free(DOM.start);
}