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ede/efiler/Fl_Icon_Browser.cxx
Vedran Ljubovic 96e331ae47 Fix one case when collapse/expand didn't work
2007-08-03 09:49:36 +00:00

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// Icon Browser - modified from Fl_Browser.cxx by Vedran Ljubovic
// "$Id: Fl_Icon_Browser.cxx 5190 2006-06-09 16:16:34Z mike $"
//
// Browser widget for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2005 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include <FL/Fl.H>
#include <FL/fl_draw.H>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include "Fl_Icon_Browser.h"
// I modified this from the original Forms data to use a linked list
// so that the number of items in the browser and size of those items
// is unlimited. The only problem is that the old browser used an
// index number to identify a line, and it is slow to convert from/to
// a pointer. I use a cache of the last match to try to speed this
// up.
// Also added the ability to "hide" a line. This set's it's height to
// zero, so the Fl_Browser_ cannot pick it.
#define SELECTED 1
#define NOTDISPLAYED 2
struct FL_BLINE { // data is in a linked list of these
FL_BLINE* prev;
FL_BLINE* next;
void* data;
Fl_Image* icon;
short length; // sizeof(txt)-1, may be longer than string
char flags; // selected, displayed
int level; // indentation level for tree
char txt[1]; // start of allocated array
};
void* Fl_Icon_Browser::item_first() const {return first;}
void* Fl_Icon_Browser::item_next(void* l) const {return ((FL_BLINE*)l)->next;}
void* Fl_Icon_Browser::item_prev(void* l) const {return ((FL_BLINE*)l)->prev;}
int Fl_Icon_Browser::item_selected(void* l) const {
return ((FL_BLINE*)l)->flags&SELECTED;}
void Fl_Icon_Browser::item_select(void* l, int v) {
if (v) ((FL_BLINE*)l)->flags |= SELECTED;
else ((FL_BLINE*)l)->flags &= ~SELECTED;
}
FL_BLINE* Fl_Icon_Browser::find_line(int line) const {
int n; FL_BLINE* l;
if (line == cacheline) return cache;
if (cacheline && line > (cacheline/2) && line < ((cacheline+lines)/2)) {
n = cacheline; l = cache;
} else if (line <= (lines/2)) {
n = 1; l = first;
} else {
n = lines; l = last;
}
for (; n < line && l; n++) l = l->next;
for (; n > line && l; n--) l = l->prev;
((Fl_Icon_Browser*)this)->cacheline = line;
((Fl_Icon_Browser*)this)->cache = l;
return l;
}
int Fl_Icon_Browser::lineno(void* v) const {
FL_BLINE* l = (FL_BLINE*)v;
if (!l) return 0;
if (l == cache) return cacheline;
if (l == first) return 1;
if (l == last) return lines;
if (!cache) {
((Fl_Icon_Browser*)this)->cache = first;
((Fl_Icon_Browser*)this)->cacheline = 1;
}
// assumme it is near cache, search both directions:
FL_BLINE* b = cache->prev;
int bnum = cacheline-1;
FL_BLINE* f = cache->next;
int fnum = cacheline+1;
int n = 0;
for (;;) {
if (b == l) {n = bnum; break;}
if (f == l) {n = fnum; break;}
if (b) {b = b->prev; bnum--;}
if (f) {f = f->next; fnum++;}
}
((Fl_Icon_Browser*)this)->cache = l;
((Fl_Icon_Browser*)this)->cacheline = n;
return n;
}
FL_BLINE* Fl_Icon_Browser::_remove(int line) {
FL_BLINE* ttt = find_line(line);
deleting(ttt);
cacheline = line-1;
cache = ttt->prev;
lines--;
full_height_ -= item_height(ttt);
if (ttt->prev) ttt->prev->next = ttt->next;
else first = ttt->next;
if (ttt->next) ttt->next->prev = ttt->prev;
else last = ttt->prev;
return(ttt);
}
void Fl_Icon_Browser::remove(int line) {
if (line < 1 || line > lines) return;
free(_remove(line));
}
void Fl_Icon_Browser::insert(int line, FL_BLINE* t) {
if (!first) {
t->prev = t->next = 0;
first = last = t;
} else if (line <= 1) {
inserting(first, t);
t->prev = 0;
t->next = first;
t->next->prev = t;
first = t;
} else if (line > lines) {
t->prev = last;
t->prev->next = t;
t->next = 0;
last = t;
} else {
FL_BLINE* n = find_line(line);
inserting(n, t);
t->next = n;
t->prev = n->prev;
t->prev->next = t;
n->prev = t;
}
cacheline = line;
cache = t;
lines++;
full_height_ += item_height(t);
redraw_line(t);
}
void Fl_Icon_Browser::insert(int line, const char* newtext, void* d) {
int l = strlen(newtext);
FL_BLINE* t = (FL_BLINE*)malloc(sizeof(FL_BLINE)+l);
t->length = (short)l;
t->flags = 0;
strcpy(t->txt, newtext);
t->data = d;
t->icon = 0;
t->level = 0;
insert(line, t);
}
void Fl_Icon_Browser::move(int to, int from) {
if (from < 1 || from > lines) return;
insert(to, _remove(from));
}
void Fl_Icon_Browser::text(int line, const char* newtext) {
if (line < 1 || line > lines) return;
FL_BLINE* t = find_line(line);
int l = strlen(newtext);
if (l > t->length) {
FL_BLINE* n = (FL_BLINE*)malloc(sizeof(FL_BLINE)+l);
replacing(t, n);
cache = n;
n->data = t->data;
n->length = (short)l;
n->flags = t->flags;
n->icon = t->icon;
n->level = t->level;
n->prev = t->prev;
if (n->prev) n->prev->next = n; else first = n;
n->next = t->next;
if (n->next) n->next->prev = n; else last = n;
free(t);
t = n;
}
strcpy(t->txt, newtext);
redraw_line(t);
}
void Fl_Icon_Browser::data(int line, void* d) {
if (line < 1 || line > lines) return;
find_line(line)->data = d;
}
int Fl_Icon_Browser::item_height(void* lv) const {
FL_BLINE* l = (FL_BLINE*)lv;
if (l->flags & NOTDISPLAYED) return 0;
int hmax = 2; // use 2 to insure we don't return a zero!
if (!l->txt[0]) {
// For blank lines set the height to exactly 1 line!
fl_font(textfont(), textsize());
int hh = fl_height();
if (hh > hmax) hmax = hh;
}
else {
const int* i = column_widths();
// do each column separately as they may all set different fonts:
for (char* str = l->txt; str && *str; str++) {
Fl_Font font = textfont(); // default font
int tsize = textsize(); // default size
while (*str==format_char()) {
str++;
switch (*str++) {
case 'l': case 'L': tsize = 24; break;
case 'm': case 'M': tsize = 18; break;
case 's': tsize = 11; break;
case 'b': font = (Fl_Font)(font|FL_BOLD); break;
case 'i': font = (Fl_Font)(font|FL_ITALIC); break;
case 'f': case 't': font = FL_COURIER; break;
case 'B':
case 'C': strtol(str, &str, 10); break;// skip a color number
case 'F': font = (Fl_Font)strtol(str,&str,10); break;
case 'S': tsize = strtol(str,&str,10); break;
case 0: case '@': str--;
case '.': goto END_FORMAT;
}
}
END_FORMAT:
char* ptr = str;
if (ptr && *i++) str = strchr(str, column_char());
else str = NULL;
if((!str && *ptr) || (str && ptr < str)) {
fl_font(font, tsize); int hh = fl_height();
if (hh > hmax) hmax = hh;
}
if (!str || !*str) break;
}
}
if (l->icon && (l->icon->h()+2)>hmax) hmax=l->icon->h()+2; // leave 2px above/below
return hmax; // previous version returned hmax+2!
}
int Fl_Icon_Browser::item_width(void* v) const {
char* str = ((FL_BLINE*)v)->txt;
const int* i = column_widths();
int ww = 0;
while (*i) { // add up all tab-seperated fields
char* e;
e = strchr(str, column_char());
if (!e) break; // last one occupied by text
str = e+1;
ww += *i++;
}
// OK, we gotta parse the string and find the string width...
int tsize = textsize();
Fl_Font font = textfont();
int done = 0;
while (*str == format_char_ && str[1] && str[1] != format_char_) {
str ++;
switch (*str++) {
case 'l': case 'L': tsize = 24; break;
case 'm': case 'M': tsize = 18; break;
case 's': tsize = 11; break;
case 'b': font = (Fl_Font)(font|FL_BOLD); break;
case 'i': font = (Fl_Font)(font|FL_ITALIC); break;
case 'f': case 't': font = FL_COURIER; break;
case 'B':
case 'C': strtol(str, &str, 10); break;// skip a color number
case 'F': font = (Fl_Font)strtol(str, &str, 10); break;
case 'S': tsize = strtol(str, &str, 10); break;
case '.':
done = 1;
break;
case '@':
str--;
done = 1;
}
if (done)
break;
}
if (*str == format_char_ && str[1])
str ++;
FL_BLINE* blind = (FL_BLINE*)v;
if (ww==0 && blind->icon) ww = blind->icon->w();
fl_font(font, tsize);
return ww + int(fl_width(str)) + 6;
}
int Fl_Icon_Browser::full_height() const {
return full_height_;
}
int Fl_Icon_Browser::incr_height() const {
return textsize()+2;
}
void Fl_Icon_Browser::item_draw(void* v, int X, int Y, int W, int H) const {
char* str = ((FL_BLINE*)v)->txt;
const int* i = column_widths();
bool first=true; // for icon
FL_BLINE*blind = (FL_BLINE*)v;
while (W > 6) { // do each tab-seperated field
int w1 = W; // width for this field
char* e = 0; // pointer to end of field or null if none
if (*i) { // find end of field and temporarily replace with 0
e = strchr(str, column_char());
if (e) {*e = 0; w1 = *i++;}
}
// Tree drawing code
// TODO: try to avoid using item_height...
#define TREE_GLYPH_WIDTH 10
// [+] and [-] box size
#define TREE_BOX_SIZE 6
if (first && blind->level>0) {
if (blind->flags & SELECTED)
fl_color(fl_contrast(textcolor(), selection_color()));
else
fl_color(textcolor());
fl_line_style(FL_DOT);
int ih = item_height(blind);
int hspace = (TREE_GLYPH_WIDTH-TREE_BOX_SIZE)/2;
int vspace = (ih-TREE_BOX_SIZE)/2;
// Draw vertical lines for parents
for(int i=1; i<blind->level; i++) {
// is there anything below to connect?
FL_BLINE* k = blind->next;
while (k && k->level > i)
k = k->next;
if (k && k->level==i)
fl_line(X+TREE_GLYPH_WIDTH/2, Y, X+TREE_GLYPH_WIDTH/2, Y+ih);
X += TREE_GLYPH_WIDTH; W -= TREE_GLYPH_WIDTH; w1 -= TREE_GLYPH_WIDTH;
}
if (blind->next && blind->next->level > blind->level) {
// draw dotted lines before and after
if (blind->prev)
fl_line(X+TREE_GLYPH_WIDTH/2, Y, X+TREE_GLYPH_WIDTH/2, Y+vspace);
// is there another item with same level?
FL_BLINE* p = blind->next;
bool collapsed=true;
while (p && p->level > blind->level) {
if (!(p->flags&NOTDISPLAYED)) collapsed=false;
p = p->next;
}
if (p && p->level == blind->level)
fl_line(X+TREE_GLYPH_WIDTH/2, Y+ih-vspace, X+TREE_GLYPH_WIDTH/2, Y+ih);
// draw [+] glyph
fl_color(fl_lighter(fl_color()));
fl_line_style(0);
fl_line(X+hspace, Y+vspace, X+TREE_GLYPH_WIDTH-hspace, Y+vspace);
fl_line(X+TREE_GLYPH_WIDTH-hspace, Y+vspace, X+TREE_GLYPH_WIDTH-hspace, Y+ih-vspace-(ih%2));
fl_line(X+TREE_GLYPH_WIDTH-hspace, Y+ih-vspace-(ih%2), X+hspace, Y+ih-vspace-(ih%2));
fl_line(X+hspace, Y+ih-vspace-(ih%2), X+hspace, Y+vspace);
fl_line(X+hspace+2, Y+ih/2, X+TREE_GLYPH_WIDTH-hspace-2, Y+ih/2); // minus
if (collapsed)
fl_line(X+TREE_GLYPH_WIDTH/2, Y+vspace+2, X+TREE_GLYPH_WIDTH/2, Y+ih-vspace-2-(ih%2)); // plus
fl_color(fl_darker(fl_color()));
}
else if (blind->next && blind->next->level == blind->level) {
// draw |- glyph
fl_line(X+TREE_GLYPH_WIDTH/2, Y, X+TREE_GLYPH_WIDTH/2, Y+ih);
fl_line(X+TREE_GLYPH_WIDTH/2+2, Y+ih/2, X+TREE_GLYPH_WIDTH-1, Y+ih/2);
}
else {
// draw L glyph
fl_line(X+TREE_GLYPH_WIDTH/2, Y, X+TREE_GLYPH_WIDTH/2, Y+ih/2);
fl_line(X+TREE_GLYPH_WIDTH/2+2, Y+ih/2, X+TREE_GLYPH_WIDTH-1, Y+ih/2);
}
X += TREE_GLYPH_WIDTH; W -= TREE_GLYPH_WIDTH; w1 -= TREE_GLYPH_WIDTH;
fl_line_style(0);
}
// NOTE: This version is drawing continuous lines, but the problem is,
// if parent item is invisible (e.g. scrolled out) it's line isn't drawn :(
/* #define TREE_GLYPH_WIDTH 10
#define TREE_BOX_SIZE 6 // box size
if (first && blind->level>0) {
if (blind->flags & SELECTED)
fl_color(fl_contrast(textcolor(), selection_color()));
else
fl_color(textcolor());
fl_line_style(FL_DOT);
int ih = item_height(blind);
int hspace = (TREE_GLYPH_WIDTH-TREE_BOX_SIZE)/2;
int vspace = (ih-TREE_BOX_SIZE)/2;
for(int i=1; i<blind->level; i++) {
// leave space for the vertical line
X += TREE_GLYPH_WIDTH; W -= TREE_GLYPH_WIDTH; w1 -= TREE_GLYPH_WIDTH;
}
if (blind->next && blind->next->level > blind->level) {
// draw dotted lines before and after
if (blind->prev)
fl_line(X+TREE_GLYPH_WIDTH/2, Y, X+TREE_GLYPH_WIDTH/2, Y+vspace);
int lineend = Y+ih;
FL_BLINE* p = blind->next;
bool collapsed=true;
while (p && p->level > blind->level) {
lineend += item_height(p);
if (!(p->flags&NOTDISPLAYED)) collapsed=false;
p = p->next;
}
if (p && p->level == blind->level)
fl_line(X+TREE_GLYPH_WIDTH/2, Y+ih-vspace, X+TREE_GLYPH_WIDTH/2, lineend);
// draw [+] glyph
fl_color(fl_lighter(fl_color()));
fl_line_style(0);
fl_line(X+hspace, Y+vspace, X+TREE_GLYPH_WIDTH-hspace, Y+vspace);
fl_line(X+TREE_GLYPH_WIDTH-hspace, Y+vspace, X+TREE_GLYPH_WIDTH-hspace, Y+ih-vspace-(ih%2));
fl_line(X+TREE_GLYPH_WIDTH-hspace, Y+ih-vspace-(ih%2), X+hspace, Y+ih-vspace-(ih%2));
fl_line(X+hspace, Y+ih-vspace-(ih%2), X+hspace, Y+vspace);
fl_line(X+hspace+2, Y+ih/2, X+TREE_GLYPH_WIDTH-hspace-2, Y+ih/2); // minus
if (collapsed)
fl_line(X+TREE_GLYPH_WIDTH/2, Y+vspace+2, X+TREE_GLYPH_WIDTH/2, Y+ih-vspace-2-(ih%2)); // plus
fl_color(fl_darker(fl_color()));
fl_line_style(FL_DOT);
X += TREE_GLYPH_WIDTH; W -= TREE_GLYPH_WIDTH; w1 -= TREE_GLYPH_WIDTH;
}
else if (blind->next && blind->next->level == blind->level) {
// draw |- glyph
int lineend = Y+ih;
FL_BLINE* p = blind->next;
FL_BLINE* q = blind;
while (p && p->level == blind->level) {
lineend += item_height(p);
q = p;
p = p->next;
}
lineend -= item_height(q);
fl_line(X+TREE_GLYPH_WIDTH/2, Y, X+TREE_GLYPH_WIDTH/2, lineend);
fl_line(X+TREE_GLYPH_WIDTH/2+2, Y+ih/2, X+TREE_GLYPH_WIDTH-1, Y+ih/2);
X += TREE_GLYPH_WIDTH; W -= TREE_GLYPH_WIDTH; w1 -= TREE_GLYPH_WIDTH;
}
else {
// draw L glyph
fl_line(X+TREE_GLYPH_WIDTH/2, Y, X+TREE_GLYPH_WIDTH/2, Y+ih/2);
fl_line(X+TREE_GLYPH_WIDTH/2+2, Y+ih/2, X+TREE_GLYPH_WIDTH-1, Y+ih/2);
X += TREE_GLYPH_WIDTH; W -= TREE_GLYPH_WIDTH; w1 -= TREE_GLYPH_WIDTH;
}
fl_line_style(0);
}*/
// Icon drawing code
if (first) {
first=false;
if (blind->icon != 0) {
blind->icon->draw(X+2,Y+1); // leave 2px left, 1px above
int iconw = blind->icon->w() + 2;
X += iconw; W -= iconw; w1 -= iconw;
}
}
int tsize = textsize();
Fl_Font font = textfont();
Fl_Color lcol = textcolor();
Fl_Align talign = FL_ALIGN_LEFT;
// check for all the @-lines recognized by XForms:
while (*str == format_char() && *++str && *str != format_char()) {
switch (*str++) {
case 'l': case 'L': tsize = 24; break;
case 'm': case 'M': tsize = 18; break;
case 's': tsize = 11; break;
case 'b': font = (Fl_Font)(font|FL_BOLD); break;
case 'i': font = (Fl_Font)(font|FL_ITALIC); break;
case 'f': case 't': font = FL_COURIER; break;
case 'c': talign = FL_ALIGN_CENTER; break;
case 'r': talign = FL_ALIGN_RIGHT; break;
case 'B':
if (!(((FL_BLINE*)v)->flags & SELECTED)) {
fl_color((Fl_Color)strtol(str, &str, 10));
fl_rectf(X, Y, w1, H);
} else strtol(str, &str, 10);
break;
case 'C':
lcol = (Fl_Color)strtol(str, &str, 10);
break;
case 'F':
font = (Fl_Font)strtol(str, &str, 10);
break;
case 'N':
lcol = FL_INACTIVE_COLOR;
break;
case 'S':
tsize = strtol(str, &str, 10);
break;
case '-':
fl_color(FL_DARK3);
fl_line(X+3, Y+H/2, X+w1-3, Y+H/2);
fl_color(FL_LIGHT3);
fl_line(X+3, Y+H/2+1, X+w1-3, Y+H/2+1);
break;
case 'u':
case '_':
fl_color(lcol);
fl_line(X+3, Y+H-1, X+w1-3, Y+H-1);
break;
case '.':
goto BREAK;
case '@':
str--; goto BREAK;
}
}
BREAK:
fl_font(font, tsize);
if (((FL_BLINE*)v)->flags & SELECTED)
lcol = fl_contrast(lcol, selection_color());
if (!active_r()) lcol = fl_inactive(lcol);
fl_color(lcol);
fl_draw(str, X+3, Y, w1-6, H, e ? Fl_Align(talign|FL_ALIGN_CLIP) : talign, 0, 0);
if (!e) break; // no more fields...
*e = column_char(); // put the seperator back
X += w1;
W -= w1;
str = e+1;
}
}
static const int no_columns[1] = {0};
Fl_Icon_Browser::Fl_Icon_Browser(int X, int Y, int W, int H, const char*l)
: Fl_Browser_(X, Y, W, H, l) {
column_widths_ = no_columns;
lines = 0;
full_height_ = 0;
cacheline = 0;
format_char_ = '@';
column_char_ = '\t';
first = last = cache = 0;
}
void Fl_Icon_Browser::lineposition(int line, Fl_Line_Position pos) {
if (line<1) line = 1;
if (line>lines) line = lines;
int p = 0;
FL_BLINE* l;
for (l=first; l && line>1; l = l->next) {
line--; p += item_height(l);
}
if (l && (pos == BOTTOM)) p += item_height (l);
int final = p, X, Y, W, H;
bbox(X, Y, W, H);
switch(pos) {
case TOP: break;
case BOTTOM: final -= H; break;
case MIDDLE: final -= H/2; break;
}
if (final > (full_height() - H)) final = full_height() -H;
position(final);
}
int Fl_Icon_Browser::topline() const {
return lineno(top());
}
void Fl_Icon_Browser::clear() {
for (FL_BLINE* l = first; l;) {
FL_BLINE* n = l->next;
free(l);
l = n;
}
full_height_ = 0;
first = 0;
lines = 0;
new_list();
}
void Fl_Icon_Browser::add(const char* newtext, void* d) {
insert(lines+1, newtext, d);
//Fl_Icon_Browser_::display(last);
}
const char* Fl_Icon_Browser::text(int line) const {
if (line < 1 || line > lines) return 0;
return find_line(line)->txt;
}
void* Fl_Icon_Browser::data(int line) const {
if (line < 1 || line > lines) return 0;
return find_line(line)->data;
}
int Fl_Icon_Browser::select(int line, int v) {
if (line < 1 || line > lines) return 0;
return Fl_Browser_::select(find_line(line), v);
}
int Fl_Icon_Browser::selected(int line) const {
if (line < 1 || line > lines) return 0;
return find_line(line)->flags & SELECTED;
}
void Fl_Icon_Browser::show(int line) {
FL_BLINE* t = find_line(line);
if (t->flags & NOTDISPLAYED) {
t->flags &= ~NOTDISPLAYED;
full_height_ += item_height(t);
if (Fl_Browser_::displayed(t)) redraw_lines();
}
}
void Fl_Icon_Browser::hide(int line) {
FL_BLINE* t = find_line(line);
if (!(t->flags & NOTDISPLAYED)) {
full_height_ -= item_height(t);
t->flags |= NOTDISPLAYED;
if (Fl_Browser_::displayed(t)) redraw_lines();
}
}
void Fl_Icon_Browser::display(int line, int v) {
if (line < 1 || line > lines) return;
if (v) show(line); else hide(line);
}
int Fl_Icon_Browser::visible(int line) const {
if (line < 1 || line > lines) return 0;
return !(find_line(line)->flags&NOTDISPLAYED);
}
int Fl_Icon_Browser::value() const {
return lineno(selection());
}
// SWAP TWO LINES
void Fl_Icon_Browser::swap(FL_BLINE *a, FL_BLINE *b) {
if ( a == b || !a || !b) return; // nothing to do
swapping(a, b);
FL_BLINE *aprev = a->prev;
FL_BLINE *anext = a->next;
FL_BLINE *bprev = b->prev;
FL_BLINE *bnext = b->next;
if ( b->prev == a ) { // A ADJACENT TO B
if ( aprev ) aprev->next = b; else first = b;
b->next = a;
a->next = bnext;
b->prev = aprev;
a->prev = b;
if ( bnext ) bnext->prev = a; else last = a;
} else if ( a->prev == b ) { // B ADJACENT TO A
if ( bprev ) bprev->next = a; else first = a;
a->next = b;
b->next = anext;
a->prev = bprev;
b->prev = a;
if ( anext ) anext->prev = b; else last = b;
} else { // A AND B NOT ADJACENT
// handle prev's
b->prev = aprev;
if ( anext ) anext->prev = b; else last = b;
a->prev = bprev;
if ( bnext ) bnext->prev = a; else last = a;
// handle next's
if ( aprev ) aprev->next = b; else first = b;
b->next = anext;
if ( bprev ) bprev->next = a; else first = a;
a->next = bnext;
}
// Disable cache -- we played around with positions
cacheline = 0;
cache = 0;
}
void Fl_Icon_Browser::swap(int ai, int bi) {
if (ai < 1 || ai > lines || bi < 1 || bi > lines) return;
FL_BLINE* a = find_line(ai);
FL_BLINE* b = find_line(bi);
swap(a,b);
}
void Fl_Icon_Browser::set_icon(int line, Fl_Image* icon) {
if (icon && line>0 && line<=lines) {
// update full_height_
FL_BLINE* bl = find_line(line);
int dh = icon->h() - item_height(bl) + 2; // leave 2px above/below
if (dh>0) full_height_ += dh;
bl->icon=icon;
redraw_line(bl);
}
}
void Fl_Icon_Browser::remove_icon(int line) {
if (line>0 && line<=lines) {
FL_BLINE* bl = find_line(line);
if (!bl->icon) return;
int dh = bl->icon->h()+2; // leave 2px above/below
bl->icon=0;
redraw_line(bl);
// update_full_height_
dh -= item_height(bl);
if (dh>0) full_height_ -= dh;
}
}
Fl_Image* Fl_Icon_Browser::get_icon(int line) {
if (line < 1 || line > lines) return 0;
return find_line(line)->icon;
}
// Tree support
void Fl_Icon_Browser::indent(int line, int level) {
if (line < 1 || line > lines) return;
if (level<0) return;
find_line(line)->level = level;
}
int Fl_Icon_Browser::indent(int line) {
if (line < 1 || line > lines) return 0;
return find_line(line)->level;
}
void Fl_Icon_Browser::collapse(void* l) {
fprintf(stderr, "collapse(l)\n");
FL_BLINE* ll = (FL_BLINE*)l;
FL_BLINE* p = ll->next;
while (p && p->level > ll->level) {
if (!(p->flags & NOTDISPLAYED)) {
full_height_ -= item_height(p);
p->flags |= NOTDISPLAYED;
}
p = p->next;
}
}
void Fl_Icon_Browser::expand(void* l) {
fprintf(stderr, "expand(l)\n");
FL_BLINE* ll = (FL_BLINE*)l;
FL_BLINE* p = ll->prev;
// if invisible, expand parent
if (ll->flags & NOTDISPLAYED) {
while (p && p->level != ll->level-1)
p = p->prev;
if (p) expand(p); // if not found, do nothing
}
p = ll->next;
while (p && p->level > ll->level) {
// expand only the level below!
if ((p->flags & NOTDISPLAYED) && (p->level==ll->level+1)) {
p->flags &= ~NOTDISPLAYED;
full_height_ += item_height(p);
}
p = p->next;
}
}
void Fl_Icon_Browser::collapse(int line) {
if (line < 1 || line > lines) return;
collapse(find_line(line));
redraw_lines();
}
void Fl_Icon_Browser::expand(int line) {
if (line < 1 || line > lines) return;
expand(find_line(line));
redraw();
}
void Fl_Icon_Browser::collapse_all() {
FL_BLINE* l = first;
if (!l) return;
do {
collapse(l);
} while (l=l->next);
redraw_lines();
}
void Fl_Icon_Browser::expand_all() {
FL_BLINE* l = first;
if (!l) return;
do {
collapse(l);
} while (l=l->next);
redraw();
}
void Fl_Icon_Browser::toggle_collapse(int line) {
if (line < 1 || line > lines) return;
toggle_collapse(find_line(line));
redraw();
}
void Fl_Icon_Browser::toggle_collapse(void* lp) {
FL_BLINE* l = (FL_BLINE*)lp;
if (!l->next || l->next->level <= l->level) return;
bool invisibles=false;
FL_BLINE* p = l->next;
do {
// expand only one level below!
if (p->level <=l->level) break;
if ((p->flags & NOTDISPLAYED) && (p->level==l->level+1))
invisibles=true;
} while (p=p->next);
if (invisibles)
expand(l);
else
collapse(l);
}
int Fl_Icon_Browser::handle(int e) {
if (e==FL_PUSH) {
FL_BLINE* l = first;
int itemy=y()-position();
while (l) {
itemy+=item_height(l);
if (itemy>Fl::event_y()) break;
l = l->next;
}
if (l && (l->level > 0) && (Fl::event_x()>x()+(l->level-1)*TREE_GLYPH_WIDTH) && (Fl::event_x()<x()+l->level*TREE_GLYPH_WIDTH)) {
toggle_collapse(l);
redraw();
Fl::event_is_click(0); // prevent the next click from becoming callback
return 1;
}
}
return Fl_Browser_::handle(e);
}
//
// End of "$Id: Fl_Icon_Browser.cxx 5190 2006-06-09 16:16:34Z mike $".
//
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