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fltk/fluid/Fl_Type.cxx

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//
// "$Id: Fl_Type.cxx,v 1.6.2.6 2001/01/22 15:13:38 easysw Exp $"
//
// Widget type code for the Fast Light Tool Kit (FLTK).
//
// Each object described by Fluid is one of these objects. They
// are all stored in a double-linked list.
//
// They "type" of the object is covered by the virtual functions.
// There will probably be a lot of these virtual functions.
//
// The type browser is also a list of these objects, but they
// are "factory" instances, not "real" ones. These objects exist
// only so the "make" method can be called on them. They are
// not in the linked list and are not written to files or
// copied or otherwise examined.
//
// Copyright 1998-2001 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 to "fltk-bugs@fltk.org".
//
#include <FL/Fl.H>
#include <FL/Fl_Browser_.H>
#include <FL/fl_draw.H>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "Fl_Type.h"
////////////////////////////////////////////////////////////////
class Widget_Browser : public Fl_Browser_ {
friend class Fl_Type;
// required routines for Fl_Browser_ subclass:
void *item_first() const ;
void *item_next(void *) const ;
void *item_prev(void *) const ;
int item_selected(void *) const ;
void item_select(void *,int);
int item_width(void *) const ;
int item_height(void *) const ;
void item_draw(void *,int,int,int,int) const ;
int incr_height() const ;
public:
int handle(int);
void callback();
Widget_Browser(int,int,int,int,const char * =0);
};
static Widget_Browser *widget_browser;
Fl_Widget *make_widget_browser(int x,int y,int w,int h) {
return (widget_browser = new Widget_Browser(x,y,w,h));
}
void select(Fl_Type *o, int v) {
widget_browser->select(o,v,1);
// Fl_Type::current = o;
}
void select_only(Fl_Type *o) {
widget_browser->select_only(o,1);
}
void deselect() {
widget_browser->deselect();
//Fl_Type::current = 0; // this breaks the paste & merge functions
}
Fl_Type *Fl_Type::first;
Fl_Type *Fl_Type::last;
static void Widget_Browser_callback(Fl_Widget *o,void *) {
((Widget_Browser *)o)->callback();
}
Widget_Browser::Widget_Browser(int x,int y,int w,int h,const char*l)
: Fl_Browser_(x,y,w,h,l) {
type(FL_MULTI_BROWSER);
Fl_Widget::callback(Widget_Browser_callback);
when(FL_WHEN_RELEASE);
}
void *Widget_Browser::item_first() const {return Fl_Type::first;}
void *Widget_Browser::item_next(void *l) const {return ((Fl_Type*)l)->next;}
void *Widget_Browser::item_prev(void *l) const {return ((Fl_Type*)l)->prev;}
int Widget_Browser::item_selected(void *l) const {return ((Fl_Type*)l)->new_selected;}
void Widget_Browser::item_select(void *l,int v) {((Fl_Type*)l)->new_selected = v;}
int Widget_Browser::item_height(void *l) const {
return ((Fl_Type *)l)->visible ? textsize()+2 : 0;
}
int Widget_Browser::incr_height() const {return textsize()+2;}
static Fl_Type* pushedtitle;
// Generate a descriptive text for this item, to put in browser & window titles
const char* Fl_Type::title() {
const char* c = name(); if (c) return c;
return type_name();
}
extern const char* subclassname(Fl_Type*);
void Widget_Browser::item_draw(void *v, int x, int y, int, int) const {
Fl_Type *l = (Fl_Type *)v;
x += 3 + l->level * 10;
if (l->new_selected) fl_color(contrast(FL_BLACK,FL_SELECTION_COLOR));
else fl_color(FL_BLACK);
if (l->is_parent()) {
if (!l->next || l->next->level <= l->level) {
if (l->open_!=(l==pushedtitle)) {
fl_loop(x,y+7,x+5,y+12,x+10,y+7);
} else {
fl_loop(x+2,y+2,x+7,y+7,x+2,y+12);
}
} else {
if (l->open_!=(l==pushedtitle)) {
fl_polygon(x,y+7,x+5,y+12,x+10,y+7);
} else {
fl_polygon(x+2,y+2,x+7,y+7,x+2,y+12);
}
}
x += 10;
}
if (l->is_widget() || l->is_class()) {
const char* c = subclassname(l);
if (!strncmp(c,"Fl_",3)) c += 3;
fl_font(textfont(), textsize());
fl_draw(c, x, y+13);
x += int(fl_width(c)+fl_width('n'));
c = l->name();
if (c) {
fl_font(textfont()|FL_BOLD, textsize());
fl_draw(c, x, y+13);
} else if ((c=l->label())) {
char buf[50]; char* p = buf;
*p++ = '"';
for (int i = 20; i--;) {
if (! (*c & -32)) break;
*p++ = *c++;
}
if (*c) {strcpy(p,"..."); p+=3;}
*p++ = '"';
*p = 0;
fl_draw(buf, x, y+13);
}
} else {
const char* c = l->title();
char buf[60]; char* p = buf;
for (int i = 55; i--;) {
if (! (*c & -32)) break;
*p++ = *c++;
}
if (*c) {strcpy(p,"..."); p+=3;}
*p = 0;
fl_font(textfont() | (l->is_code_block() && (l->level==0 || l->parent->is_class())?0:FL_BOLD), textsize());
fl_draw(buf, x, y+13);
}
}
int Widget_Browser::item_width(void *v) const {
Fl_Type *l = (Fl_Type *)v;
if (!l->visible) return 0;
int w = 3 + l->level*10;
if (l->is_parent()) w += 10;
if (l->is_widget() || l->is_class()) {
const char* c = l->type_name();
if (!strncmp(c,"Fl_",3)) c += 3;
fl_font(textfont(), textsize());
w += int(fl_width(c) + fl_width('n'));
c = l->name();
if (c) {
fl_font(textfont()|FL_BOLD, textsize());
w += int(fl_width(c));
} else if ((c=l->label())) {
char buf[50]; char* p = buf;
*p++ = '"';
for (int i = 20; i--;) {
if (! (*c & -32)) break;
*p++ = *c++;
}
if (*c) {strcpy(p,"..."); p+=3;}
*p++ = '"';
*p = 0;
w += int(fl_width(buf));
}
} else {
const char* c = l->title();
char buf[60]; char* p = buf;
for (int i = 55; i--;) {
if (! (*c & -32)) break;
*p++ = *c++;
}
if (*c) {strcpy(p,"..."); p+=3;}
*p = 0;
fl_font(textfont() | (l->is_code_block() && (l->level==0 || l->parent->is_class())?0:FL_BOLD), textsize());
w += int(fl_width(buf));
}
return w;
}
void redraw_browser() {
widget_browser->redraw();
}
void Widget_Browser::callback() {
selection_changed((Fl_Type*)selection());
}
int Widget_Browser::handle(int e) {
static Fl_Type *title;
Fl_Type *l;
int X,Y,W,H; bbox(X,Y,W,H);
switch (e) {
case FL_PUSH:
if (!Fl::event_inside(X,Y,W,H)) break;
l = (Fl_Type*)find_item(Fl::event_y());
if (l) {
X += 10*l->level;
if (l->is_parent() && Fl::event_x()>X && Fl::event_x()<X+13) {
title = pushedtitle = l;
redraw_line(l);
return 1;
}
}
break;
case FL_DRAG:
if (!title) break;
l = (Fl_Type*)find_item(Fl::event_y());
if (l) {
X += 10*l->level;
if (l->is_parent() && Fl::event_x()>X && Fl::event_x()<X+13) ;
else l = 0;
}
if (l != pushedtitle) {
if (pushedtitle) redraw_line(pushedtitle);
if (l) redraw_line(l);
pushedtitle = l;
}
return 1;
case FL_RELEASE:
if (!title) {
l = (Fl_Type*)find_item(Fl::event_y());
if (l && l->new_selected && (Fl::event_clicks() || Fl::event_state(FL_CTRL)))
l->open();
break;
}
l = pushedtitle;
title = pushedtitle = 0;
if (l) {
if (l->open_) {
l->open_ = 0;
for (Fl_Type*k = l->next; k&&k->level>l->level; k = k->next)
k->visible = 0;
} else {
l->open_ = 1;
for (Fl_Type*k=l->next; k&&k->level>l->level;) {
k->visible = 1;
if (k->is_parent() && !k->open_) {
Fl_Type *j;
for (j = k->next; j && j->level>k->level; j = j->next);
k = j;
} else
k = k->next;
}
}
redraw();
}
return 1;
}
return Fl_Browser_::handle(e);
}
Fl_Type::Fl_Type() {
factory = 0;
parent = 0;
next = prev = 0;
selected = new_selected = 0;
visible = 0;
name_ = 0;
label_ = 0;
user_data_ = 0;
user_data_type_ = 0;
callback_ = 0;
rtti = 0;
level = 0;
}
static void fixvisible(Fl_Type *p) {
Fl_Type *t = p;
for (;;) {
if (t->parent) t->visible = t->parent->visible && t->parent->open_;
else t->visible = 1;
t = t->next;
if (!t || t->level <= p->level) break;
}
}
// turn a click at x,y on this into the actual picked object:
Fl_Type* Fl_Type::click_test(int,int) {return 0;}
void Fl_Type::add_child(Fl_Type*, Fl_Type*) {}
void Fl_Type::move_child(Fl_Type*, Fl_Type*) {}
void Fl_Type::remove_child(Fl_Type*) {}
// add a list of widgets as a new child of p:
void Fl_Type::add(Fl_Type *p) {
if (p && parent == p) return;
parent = p;
Fl_Type *end = this;
while (end->next) end = end->next;
Fl_Type *q;
int newlevel;
if (p) {
for (q = p->next; q && q->level > p->level; q = q->next);
newlevel = p->level+1;
} else {
q = 0;
newlevel = 0;
}
for (Fl_Type *t = this->next; t; t = t->next) t->level += (newlevel-level);
level = newlevel;
if (q) {
prev = q->prev;
prev->next = this;
q->prev = end;
end->next = q;
} else if (first) {
prev = last;
prev->next = this;
end->next = 0;
last = end;
} else {
first = this;
last = end;
prev = end->next = 0;
}
if (p) p->add_child(this,0);
open_ = 1;
fixvisible(this);
modflag = 1;
widget_browser->redraw();
}
// add to a parent before another widget:
void Fl_Type::insert(Fl_Type *g) {
Fl_Type *end = this;
while (end->next) end = end->next;
parent = g->parent;
int newlevel = g->level;
visible = g->visible;
for (Fl_Type *t = this->next; t; t = t->next) t->level += newlevel-level;
level = newlevel;
prev = g->prev;
if (prev) prev->next = this; else first = this;
end->next = g;
g->prev = end;
fixvisible(this);
if (parent) parent->add_child(this, g);
widget_browser->redraw();
}
// Return message number for I18N...
int
Fl_Type::msgnum() {
int count;
Fl_Type *p;
for (count = 0, p = this; p;) {
if (p->is_widget() && p->label() && !((Fl_Widget_Type *)p)->image) count ++;
if (p->prev) p = p->prev;
else p = p->parent;
}
return count;
}
// delete from parent:
Fl_Type *Fl_Type::remove() {
Fl_Type *end = this;
for (;;) {
if (!end->next || end->next->level <= level) break;
end = end->next;
}
if (prev) prev->next = end->next;
else first = end->next;
if (end->next) end->next->prev = prev;
else last = prev;
Fl_Type *r = end->next;
prev = end->next = 0;
if (parent) parent->remove_child(this);
parent = 0;
widget_browser->redraw();
selection_changed(0);
return r;
}
// update a string member:
int storestring(const char *n, const char * & p, int nostrip) {
if (n == p) return 0;
int length = 0;
if (n) { // see if blank, strip leading & trailing blanks
if (!nostrip) while (isspace(*n)) n++;
const char *e = n + strlen(n);
if (!nostrip) while (e > n && isspace(*(e-1))) e--;
length = e-n;
if (!length) n = 0;
}
if (n == p) return 0;
if (n && p && !strncmp(n,p,length) && !p[length]) return 0;
if (p) free((void *)p);
if (!n || !*n) {
p = 0;
} else {
char *q = (char *)malloc(length+1);
strncpy(q,n,length);
q[length] = 0;
p = q;
}
modflag = 1;
return 1;
}
void Fl_Type::name(const char *n) {
if (storestring(n,name_)) {
if (visible) widget_browser->redraw();
}
}
void Fl_Type::label(const char *n) {
if (storestring(n,label_,1)) {
setlabel(label_);
if (visible && !name_) widget_browser->redraw();
}
}
void Fl_Type::callback(const char *n) {
storestring(n,callback_);
}
void Fl_Type::user_data(const char *n) {
storestring(n,user_data_);
}
void Fl_Type::user_data_type(const char *n) {
storestring(n,user_data_type_);
}
void Fl_Type::open() {
printf("Open of '%s' is not yet implemented\n",type_name());
}
void Fl_Type::setlabel(const char *) {}
Fl_Type::~Fl_Type() {
// warning: destructor only works for widgets that have been add()ed.
if (widget_browser) widget_browser->deleting(this);
if (prev) prev->next = next; else first = next;
if (next) next->prev = prev; else last = prev;
if (current == this) current = 0;
modflag = 1;
if (parent) parent->remove_child(this);
}
int Fl_Type::is_parent() const {return 0;}
int Fl_Type::is_widget() const {return 0;}
int Fl_Type::is_valuator() const {return 0;}
int Fl_Type::is_button() const {return 0;}
int Fl_Type::is_menu_item() const {return 0;}
int Fl_Type::is_menu_button() const {return 0;}
int Fl_Type::is_group() const {return 0;}
int Fl_Type::is_window() const {return 0;}
int Fl_Type::is_code_block() const {return 0;}
int Fl_Type::is_decl_block() const {return 0;}
int Fl_Type::is_class() const {return 0;}
////////////////////////////////////////////////////////////////
Fl_Type *in_this_only; // set if menu popped-up in window
void select_all_cb(Fl_Widget *,void *) {
Fl_Type *p = Fl_Type::current ? Fl_Type::current->parent : 0;
if (in_this_only) {
Fl_Type *t = p;
for (; t && t != in_this_only; t = t->parent);
if (t != in_this_only) p = in_this_only;
}
for (;;) {
if (p) {
int foundany = 0;
for (Fl_Type *t = p->next; t && t->level>p->level; t = t->next) {
if (!t->new_selected) {widget_browser->select(t,1,0); foundany = 1;}
}
if (foundany) break;
p = p->parent;
} else {
for (Fl_Type *t = Fl_Type::first; t; t = t->next)
widget_browser->select(t,1,0);
break;
}
}
selection_changed(p);
}
static void delete_children(Fl_Type *p) {
Fl_Type *f;
for (f = p; f && f->next && f->next->level > p->level; f = f->next);
for (; f != p; ) {
Fl_Type *g = f->prev;
delete f;
f = g;
}
}
void delete_all(int selected_only) {
for (Fl_Type *f = Fl_Type::first; f;) {
if (f->selected || !selected_only) {
delete_children(f);
Fl_Type *g = f->next;
delete f;
f = g;
} else f = f->next;
}
if(!selected_only) include_H_from_C=1;
selection_changed(0);
}
// move f (and it's children) into list before g:
// returns pointer to whatever is after f & children
void Fl_Type::move_before(Fl_Type* g) {
if (level != g->level) printf("move_before levels don't match! %d %d\n",
level, g->level);
Fl_Type* n;
for (n = next; n && n->level > level; n = n->next);
if (n == g) return;
Fl_Type *l = n ? n->prev : Fl_Type::last;
prev->next = n;
if (n) n->prev = prev; else Fl_Type::last = prev;
prev = g->prev;
l->next = g;
if (prev) prev->next = this; else Fl_Type::first = this;
g->prev = l;
if (parent) parent->move_child(this,g);
widget_browser->redraw();
}
// move selected widgets in their parent's list:
void earlier_cb(Fl_Widget*,void*) {
Fl_Type *f;
for (f = Fl_Type::first; f; ) {
Fl_Type* nxt = f->next;
if (f->selected) {
Fl_Type* g;
for (g = f->prev; g && g->level > f->level; g = g->prev);
if (g && g->level == f->level && !g->selected) f->move_before(g);
}
f = nxt;
}
}
void later_cb(Fl_Widget*,void*) {
Fl_Type *f;
for (f = Fl_Type::last; f; ) {
Fl_Type* prv = f->prev;
if (f->selected) {
Fl_Type* g;
for (g = f->next; g && g->level > f->level; g = g->next);
if (g && g->level == f->level && !g->selected) g->move_before(f);
}
f = prv;
}
}
////////////////////////////////////////////////////////////////
// write a widget and all it's children:
void Fl_Type::write() {
write_indent(level);
write_word(type_name());
write_word(name());
write_open(level);
write_properties();
write_close(level);
if (!is_parent()) return;
// now do children:
write_open(level);
Fl_Type *child;
for (child = next; child && child->level > level; child = child->next)
if (child->level == level+1) child->write();
write_close(level);
}
void Fl_Type::write_properties() {
// repeat this for each attribute:
if (label()) {
write_indent(level+1);
write_word("label");
write_word(label());
}
if (user_data()) {
write_indent(level+1);
write_word("user_data");
write_word(user_data());
if (user_data_type()) {
write_word("user_data_type");
write_word(user_data_type());
}
}
if (callback()) {
write_indent(level+1);
write_word("callback");
write_word(callback());
}
if (is_parent() && open_) write_word("open");
if (selected) write_word("selected");
}
void Fl_Type::read_property(const char *c) {
if (!strcmp(c,"label"))
label(read_word());
else if (!strcmp(c,"user_data"))
user_data(read_word());
else if (!strcmp(c,"user_data_type"))
user_data_type(read_word());
else if (!strcmp(c,"callback"))
callback(read_word());
else if (!strcmp(c,"open"))
open_ = 1;
else if (!strcmp(c,"selected"))
select(this,1);
else
read_error("Unknown property \"%s\"", c);
}
int Fl_Type::read_fdesign(const char*, const char*) {return 0;}
//
// End of "$Id: Fl_Type.cxx,v 1.6.2.6 2001/01/22 15:13:38 easysw Exp $".
//
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