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fltk/fluid/nodes/Menu_Node.cxx
Matthias Melcher e4b3713fad Fluid: user_data_
2026-02-23 13:33:41 +01:00

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//
// Menu Node code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2025 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// https://www.fltk.org/COPYING.php
//
// Please see the following page on how to report bugs and issues:
//
// https://www.fltk.org/bugs.php
//
#include "nodes/Menu_Node.h"
#include "Fluid.h"
#include "Project.h"
#include "app/Image_Asset.h"
#include "proj/mergeback.h"
#include "proj/undo.h"
#include "io/Project_Reader.h"
#include "io/Project_Writer.h"
#include "io/Code_Writer.h"
#include "nodes/Window_Node.h"
#include "widgets/Formula_Input.h"
#include "widgets/Node_Browser.h"
#include <FL/Fl.H>
#include <FL/fl_message.H>
#include <FL/Fl_Menu_.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Value_Input.H>
#include <FL/Fl_Text_Display.H>
#include <FL/Fl_Menu_Button.H>
#include <FL/Fl_Shortcut_Button.H>
#include <FL/Fl_Output.H>
#include <FL/fl_draw.H>
#include <FL/Fl_Multi_Label.H>
#include "../src/flstring.h"
#include <stdio.h>
#include <stdlib.h>
using namespace fld;
using namespace fld::proj;
Fl_Menu_Item menu_item_type_menu[] = {
{"Normal",0,nullptr,(void*)nullptr},
{"Toggle",0,nullptr,(void*)FL_MENU_BOX},
{"Radio",0,nullptr,(void*)FL_MENU_RADIO},
{nullptr}};
static void delete_dependents(Fl_Menu_Item *m) {
if (!m)
return;
int level = 0;
for (;;m++) {
if (m->label()==nullptr) {
if (level==0) {
break;
} else {
level--;
}
}
if (m->flags&FL_SUBMENU)
level++;
if (m->labeltype()==FL_MULTI_LABEL)
delete (Fl_Multi_Label*)m->label();
}
}
static void delete_menu(Fl_Menu_Item *m) {
if (!m)
return;
delete_dependents(m);
delete[] m;
}
void Input_Choice_Node::build_menu() {
Fl_Input_Choice* w = (Fl_Input_Choice*)o;
// count how many Fl_Menu_Item structures needed:
int n = 0;
Node* q;
for (q = next; q && q->level > level; q = q->next) {
if (q->can_have_children()) n++; // space for null at end of submenu
n++;
}
if (!n) {
if (menusize) delete_menu((Fl_Menu_Item*)(w->menu()));
w->menu(nullptr);
menusize = 0;
} else {
n++; // space for null at end of menu
if (menusize<n) {
if (menusize) delete_menu((Fl_Menu_Item*)(w->menu()));
menusize = n+10;
w->menu(new Fl_Menu_Item[menusize]);
} else {
if (menusize) delete_dependents((Fl_Menu_Item*)(w->menu()));
}
// Menus are already built during the .fl file reading process, so if the
// end of a menu list is not read yet, the end markers (label==nullptr) will
// not be set, and deleting dependents will randomly free memory.
// Clearing the array should avoid that.
memset( (void*)w->menu(), 0, menusize * sizeof(Fl_Menu_Item) );
// fill them all in:
Fl_Menu_Item* m = (Fl_Menu_Item*)(w->menu());
int lvl = level+1;
for (q = next; q && q->level > level; q = q->next) {
Menu_Item_Node* i = (Menu_Item_Node*)q;
if (i->o->image()) {
if (i->o->label() && i->o->label()[0]) {
Fl_Multi_Label *ml = new Fl_Multi_Label;
ml->labela = (char*)i->o->image();
ml->labelb = i->o->label();
ml->typea = FL_IMAGE_LABEL;
ml->typeb = FL_NORMAL_LABEL;
ml->label(m);
} else {
i->o->image()->label(m);
}
} else {
m->label(i->o->label() ? i->o->label() : "(nolabel)");
m->labeltype(i->o->labeltype());
}
m->shortcut(((Fl_Button*)(i->o))->shortcut());
m->callback(nullptr,(void*)i);
m->flags = i->flags() & ~FL_MENU_HEADLINE;
m->labelfont(i->o->labelfont());
m->labelsize(i->o->labelsize());
m->labelcolor(i->o->labelcolor());
if (q->can_have_children()) {lvl++; m->flags |= FL_SUBMENU;}
m++;
int l1 =
(q->next && q->next->is_a(Type::Menu_Item)) ? q->next->level : level;
while (lvl > l1) {m->label(nullptr); m++; lvl--;}
lvl = l1;
}
}
o->redraw();
}
/**
Create and add a new Menu Item node.
\param[in] strategy add after current or as last child
\return new Menu Item node
*/
Node *Menu_Item_Node::make(Strategy strategy) {
return Menu_Item_Node::make(0, strategy);
}
/**
Create an add a specific Menu Item node.
\param[in] flags set to 0, FL_MENU_RADIO, FL_MENU_TOGGLE, or FL_SUBMENU
\param[in] strategy add after current or as last child
\return new Menu Item node
*/
Node* Menu_Item_Node::make(int flags, Strategy strategy) {
// Find a good insert position based on the current marked node
Node *anchor = Fluid.proj.tree.current, *p = anchor;
if (p && (strategy.placement() == Strategy::AFTER_CURRENT))
p = p->parent;
while (p && !(p->is_a(Type::Menu_Manager_) || p->is_a(Type::Submenu))) {
anchor = p;
strategy.placement(Strategy::AFTER_CURRENT);
p = p->parent;
}
if (!p) {
fl_message("Please select a menu widget or a menu item");
return nullptr;
}
if (!o) {
o = new Fl_Button(0,0,100,20); // create template widget
}
Menu_Item_Node* t = nullptr;
if (flags==FL_SUBMENU) {
t = new Submenu_Node();
} else {
t = new Menu_Item_Node();
}
t->o = new Fl_Button(0,0,100,20);
t->o->type(flags);
t->factory = this;
t->add(anchor, strategy);
if (strategy.source() == Strategy::FROM_USER) {
if (flags==FL_SUBMENU) {
t->label("submenu");
} else {
t->label("item");
}
}
return t;
}
void group_selected_menuitems() {
// The group will be created in the parent group of the current menuitem
if (!Fluid.proj.tree.current->is_a(Type::Menu_Item)) {
return;
}
Menu_Item_Node *q = static_cast<Menu_Item_Node*>(Fluid.proj.tree.current);
Node *qq = Fluid.proj.tree.current->parent;
if (!qq || !(qq->is_a(Type::Menu_Manager_) || qq->is_a(Type::Submenu))) {
fl_message("Can't create a new submenu here.");
return;
}
Fluid.proj.undo.checkpoint();
Fluid.proj.undo.suspend();
Widget_Node *n = (Widget_Node*)(q->make(FL_SUBMENU, Strategy::AFTER_CURRENT));
for (Node *t = qq->next; t && (t->level > qq->level);) {
if (t->level != n->level || t == n || !t->selected) {
t = t->next;
continue;
}
Node *nxt = t->remove();
t->add(n, Strategy::AS_LAST_CHILD);
t = nxt;
}
widget_browser->rebuild();
Fluid.proj.undo.resume();
Fluid.proj.set_modflag(1);
}
void ungroup_selected_menuitems() {
// Find the submenu
Node *qq = Fluid.proj.tree.current->parent;
Widget_Node *q = static_cast<Widget_Node*>(Fluid.proj.tree.current);
int q_level = q->level;
if (!qq || !qq->is_a(Type::Submenu)) {
fl_message("Only menu items inside a submenu can be ungrouped.");
return;
}
Fluid.proj.undo.checkpoint();
Fluid.proj.undo.suspend();
Fluid.proj.tree.current = qq;
for (Node *t = qq->next; t && (t->level > qq->level);) {
if (t->level != q_level || !t->selected) {
t = t->next;
continue;
}
Node *nxt = t->remove();
t->insert(qq);
t = nxt;
}
if (!qq->next || (qq->next->level <= qq->level)) {
qq->remove();
delete qq; // qq has no children that need to be delete
}
Fluid.proj.tree.current = q;
widget_browser->rebuild();
Fluid.proj.undo.resume();
Fluid.proj.set_modflag(1);
}
/**
Create and add a new Checkbox Menu Item node.
\param[in] strategy add after current or as last child
\return new node
*/
Node *Checkbox_Menu_Item_Node::make(Strategy strategy) {
return Menu_Item_Node::make(FL_MENU_TOGGLE, strategy);
}
/**
Create and add a new Radio ButtonMenu Item node.
\param[in] strategy add after current or as last child
\return new node
*/
Node *Radio_Menu_Item_Node::make(Strategy strategy) {
return Menu_Item_Node::make(FL_MENU_RADIO, strategy);
}
/**
Create and add a new Submenu Item node.
\param[in] strategy add after current or as last child
\return new node
*/
Node *Submenu_Node::make(Strategy strategy) {
return Menu_Item_Node::make(FL_SUBMENU, strategy);
}
Menu_Item_Node Menu_Item_Node::prototype;
Checkbox_Menu_Item_Node Checkbox_Menu_Item_Node::prototype;
Radio_Menu_Item_Node Radio_Menu_Item_Node::prototype;
Submenu_Node Submenu_Node::prototype;
////////////////////////////////////////////////////////////////
// Writing the C code:
// test functions in Widget_Node.C:
int is_name(const char *c);
const char *array_name(Widget_Node *o);
int isdeclare(const char *c);
// Search backwards to find the parent menu button and return it's name.
// Also put in i the index into the button's menu item array belonging
// to this menu item.
const char* Menu_Item_Node::menu_name(fld::io::Code_Writer& f, int& i) {
i = 0;
Node* t = prev;
while (t && t->is_a(Type::Menu_Item)) {
// be sure to count the {0} that ends a submenu:
if (t->level > t->next->level) i += (t->level - t->next->level);
// detect empty submenu:
else if (t->level == t->next->level && t->can_have_children()) i++;
t = t->prev;
i++;
}
if (!t) return "\n#error Menu_Item_Node::menu_name, invalid f\n";
return f.unique_id(t, "menu", t->name(), t->label());
}
void Menu_Item_Node::write_static(fld::io::Code_Writer& f) {
if (image && label() && label()[0]) {
f.write_h_once("#include <FL/Fl.H>");
f.write_h_once("#include <FL/Fl_Multi_Label.H>");
}
if (callback() && is_name(callback()) && !user_defined(callback()))
f.write_h_once("extern void %s(Fl_Menu_*, %s);",
callback(),
user_data_type_or_voidp().c_str());
for (int n=0; n < NUM_EXTRA_CODE; n++) {
if (!extra_code(n).empty() && isdeclare(extra_code(n).c_str()))
f.write_h_once("%s", extra_code(n).c_str());
}
if (callback() && !is_name(callback()) && (callback()[0] != '[')) {
// see if 'o' or 'v' used, to prevent unused argument warnings:
int use_o = 0;
int use_v = 0;
const char *d;
for (d = callback(); *d;) {
if (*d == 'o' && !is_id(d[1])) use_o = 1;
if (*d == 'v' && !is_id(d[1])) use_v = 1;
do d++; while (is_id(*d));
while (*d && !is_id(*d)) d++;
}
const char* cn = callback_name(f);
const char* k = class_name(1);
if (k) {
f.write_c("\nvoid %s::%s_i(Fl_Menu_*", k, cn);
} else {
f.write_c("\nstatic void %s(Fl_Menu_*", cn);
}
if (use_o) f.write_c(" o");
std::string ut = user_data_type_or_voidp();
f.write_c(", %s", ut.c_str());
if (use_v) f.write_c(" v");
f.write_c(") {\n");
f.tag(Mergeback::Tag::GENERIC, Mergeback::Tag::MENU_CALLBACK, 0);
f.write_c_indented(callback(), 1, 0);
if (*(d-1) != ';' && *(d-1) != '}') {
const char *p = strrchr(callback(), '\n');
if (p) p ++;
else p = callback();
// Only add trailing semicolon if the last line is not a preprocessor
// statement...
if (*p != '#' && *p) f.write_c(";");
}
f.write_c("\n");
f.tag(Mergeback::Tag::MENU_CALLBACK, Mergeback::Tag::GENERIC, get_uid());
f.write_c("}\n");
// If the menu item is part of a Class or Widget Class, FLUID generates
// a dummy static callback which retrieves a pointer to the class and then
// calls the original callback from within the class context.
// k is the name of the enclosing class (or classes)
if (k) {
// Implement the callback as a static member function
f.write_c("void %s::%s(Fl_Menu_* o, %s v) {\n", k, cn, ut.c_str());
// Find the Fl_Menu_ container for this menu item
Node* t = parent; while (t->is_a(Type::Menu_Item)) t = t->parent;
if (t) {
Widget_Node *tw = (t->is_widget()) ? static_cast<Widget_Node*>(t) : nullptr;
Node *q = nullptr;
// Generate code to call the callback
if (tw->is_a(Type::Menu_Bar) && ((Menu_Bar_Node*)tw)->is_sys_menu_bar()) {
// Fl_Sys_Menu_Bar removes itself from any parent on macOS, so we
// wrapped it in a class and remeber the parent class in a new
// class memeber variable.
Menu_Bar_Node *tmb = (Menu_Bar_Node*)tw;
f.write_c("%s%s* sys_menu_bar = ((%s*)o);\n", f.indent(1),
tmb->sys_menubar_proxy_name(), tmb->sys_menubar_proxy_name());
f.write_c("%s%s* parent_class = ((%s*)sys_menu_bar->_parent_class);\n",
f.indent(1), k, k);
f.write_c("%sparent_class->%s_i(o,v);\n}\n",
f.indent(1), cn);
} else {
f.write_c("%s((%s*)(o", f.indent(1), k);
// The class pointer is in the user_data field of the top widget
if (t && t->is_a(Type::Input_Choice)) {
// Go up one more level for Fl_Input_Choice, as these are groups themselves
f.write_c("->parent()");
}
// Now generate code to find the topmost widget in this class
for (t = t->parent; t && t->is_widget() && !is_class(); q = t, t = t->parent)
f.write_c("->parent()");
// user_data is cast into a pointer to the
if (!q || !q->is_a(Type::Widget_Class))
f.write_c("->user_data()");
f.write_c("))->%s_i(o,v);\n}\n", cn);
}
} else {
f.write_c("#error Enclosing Fl_Menu_* not found\n");
}
}
}
if (image) {
if (!f.c_contains(image))
image->write_static(f, compress_image_);
}
if (next && next->is_a(Type::Menu_Item)) return;
// okay, when we hit last item in the menu we have to write the
// entire array out:
const char* k = class_name(1);
if (k) {
int i;
f.write_c("\nFl_Menu_Item %s::%s[] = {\n", k, menu_name(f, i));
} else {
int i;
f.write_c("\nFl_Menu_Item %s[] = {\n", menu_name(f, i));
}
Node* t = prev; while (t && t->is_a(Type::Menu_Item)) t = t->prev;
for (Node* q = t->next; q && q->is_a(Type::Menu_Item); q = q->next) {
((Menu_Item_Node*)q)->write_item(f);
int thislevel = q->level; if (q->can_have_children()) thislevel++;
int nextlevel =
(q->next && q->next->is_a(Type::Menu_Item)) ? q->next->level : t->level+1;
while (thislevel > nextlevel) {f.write_c(" {0,0,0,0,0,0,0,0,0},\n"); thislevel--;}
}
f.write_c(" {0,0,0,0,0,0,0,0,0}\n};\n");
if (k) {
// Write menu item variables...
t = prev; while (t && t->is_a(Type::Menu_Item)) t = t->prev;
for (Node* q = t->next; q && q->is_a(Type::Menu_Item); q = q->next) {
Menu_Item_Node *m = (Menu_Item_Node*)q;
const char *c = array_name(m);
if (c) {
if (c==m->name()) {
// assign a menu item address directly to a variable
int i;
const char* n = ((Menu_Item_Node *)q)->menu_name(f, i);
f.write_c("Fl_Menu_Item* %s::%s = %s::%s + %d;\n", k, c, k, n, i);
} else {
// if the name is an array, only define the array.
// The actual assignment is in write_code1(fld::io::Code_Writer& f)
f.write_c("Fl_Menu_Item* %s::%s;\n", k, c);
}
}
}
}
}
int Menu_Item_Node::flags() {
int i = o->type();
if (((Fl_Button*)o)->value()) i |= FL_MENU_VALUE;
if (!o->active()) i |= FL_MENU_INACTIVE;
if (!o->visible()) i |= FL_MENU_INVISIBLE;
if (can_have_children()) {
if (user_data().empty())
i |= FL_SUBMENU;
else
i |= FL_SUBMENU_POINTER;
}
if (hotspot()) i |= FL_MENU_DIVIDER;
if (menu_headline()) i |= FL_MENU_HEADLINE;
return i;
}
void Menu_Item_Node::write_item(fld::io::Code_Writer& f) {
static const char * const labeltypes[] = {
"FL_NORMAL_LABEL",
"FL_NO_LABEL",
"FL_SHADOW_LABEL",
"FL_ENGRAVED_LABEL",
"FL_EMBOSSED_LABEL",
"FL_MULTI_LABEL",
"FL_ICON_LABEL",
"FL_IMAGE_LABEL"
};
write_comment_inline_c(f, " ");
f.write_c(" {");
if (label() && label()[0])
switch (Fluid.proj.i18n.type) {
case fld::I18n_Type::GNU:
// we will call i18n when the menu is instantiated for the first time
f.write_c("%s(", Fluid.proj.i18n.gnu_static_function.c_str());
f.write_cstring(label());
f.write_c(")");
break;
case fld::I18n_Type::POSIX:
// fall through: strings can't be translated before a catalog is chosen
default:
f.write_cstring(label());
}
else
f.write_c("\"\"");
if (((Fl_Button*)o)->shortcut()) {
int s = ((Fl_Button*)o)->shortcut();
f.write_c(", ");
if (Fluid.proj.use_FL_COMMAND) {
if (s & FL_CTRL) { f.write_c("FL_CONTROL|"); s &= ~FL_CTRL; }
if (s & FL_META) { f.write_c("FL_COMMAND|"); s &= ~FL_META; }
} else {
if (s & FL_CTRL) { f.write_c("FL_CTRL|"); s &= ~FL_CTRL; }
if (s & FL_META) { f.write_c("FL_META|"); s &= ~FL_META; }
}
if (s & FL_SHIFT) { f.write_c("FL_SHIFT|"); s &= ~FL_SHIFT; }
if (s & FL_ALT) { f.write_c("FL_ALT|"); s &= ~FL_ALT; }
if ((s < 127) && isprint(s))
f.write_c("'%c', ", s);
else
f.write_c("0x%x, ", s);
} else {
f.write_c(", 0, ");
}
if (callback()) {
if (callback()[0] == '[') {
f.write_c("\n");
f.tag(Mergeback::Tag::GENERIC, Mergeback::Tag::WIDGET_CALLBACK, 0);
f.write_c_indented(callback(), 1, 0);
f.write_c("\n");
f.tag(Mergeback::Tag::WIDGET_CALLBACK, Mergeback::Tag::GENERIC, get_uid());
f.write_c("%s, ", f.indent_plus(1));
} else {
const char* k = is_name(callback()) ? nullptr : class_name(1);
if (k) {
f.write_c(" (Fl_Callback*)%s::%s,", k, callback_name(f));
} else {
f.write_c(" (Fl_Callback*)%s,", callback_name(f));
}
}
} else
f.write_c(" 0,");
if (!user_data().empty())
f.write_c(" (void*)(%s),", user_data().c_str());
else
f.write_c(" 0,");
f.write_c(" %d, (uchar)%s, %d, %d, %d", flags(),
labeltypes[o->labeltype()], o->labelfont(), o->labelsize(), o->labelcolor());
f.write_c("},\n");
}
void start_menu_initialiser(fld::io::Code_Writer& f, int &initialized, const char *name, int index) {
if (!initialized) {
initialized = 1;
f.write_c("%s{ Fl_Menu_Item* o = &%s[%d];\n", f.indent(), name, index);
f.indentation++;
}
}
void Menu_Item_Node::write_code1(fld::io::Code_Writer& f) {
int i; const char* mname = menu_name(f, i);
if (!prev->is_a(Type::Menu_Item)) {
// for first menu item, declare the array
if (class_name(1)) {
f.write_h("%sstatic Fl_Menu_Item %s[];\n", f.indent(1), mname);
} else {
f.write_h("extern Fl_Menu_Item %s[];\n", mname);
}
}
const char *c = array_name(this);
if (c) {
if (class_name(1)) {
f.write_public(public_);
f.write_h("%sstatic Fl_Menu_Item *%s;\n", f.indent(1), c);
} else {
if (c==name())
f.write_h("#define %s (%s+%d)\n", c, mname, i);
else
f.write_h("extern Fl_Menu_Item *%s;\n", c);
}
}
if (callback()) {
if (!is_name(callback()) && (callback()[0] != '[') && class_name(1)) {
const char* cn = callback_name(f);
std::string ut = user_data_type_or_voidp();
f.write_public(0);
f.write_h("%sinline void %s_i(Fl_Menu_*, %s);\n", f.indent(1), cn, ut.c_str());
f.write_h("%sstatic void %s(Fl_Menu_*, %s);\n", f.indent(1), cn, ut.c_str());
}
}
int menuItemInitialized = 0;
// if the name is an array variable, assign the value here
if (name() && strchr(name(), '[')) {
f.write_c("%s%s = &%s[%d];\n", f.indent_plus(1), name(), mname, i);
}
if (image) {
start_menu_initialiser(f, menuItemInitialized, mname, i);
if (label() && label()[0]) {
f.write_c("%sFl_Multi_Label *ml = new Fl_Multi_Label;\n", f.indent());
f.write_c("%sml->labela = (char*)", f.indent());
image->write_inline(f);
f.write_c(";\n");
if (Fluid.proj.i18n.type==fld::I18n_Type::NONE) {
f.write_c("%sml->labelb = o->label();\n", f.indent());
} else if (Fluid.proj.i18n.type==fld::I18n_Type::GNU) {
f.write_c("%sml->labelb = %s(o->label());\n",
f.indent(), Fluid.proj.i18n.gnu_function.c_str());
} else if (Fluid.proj.i18n.type==fld::I18n_Type::POSIX) {
f.write_c("%sml->labelb = catgets(%s,%s,i+%d,o->label());\n",
f.indent(),
Fluid.proj.i18n.posix_file.empty() ? "_catalog" : Fluid.proj.i18n.posix_file.c_str(),
Fluid.proj.i18n.posix_set.c_str(), msgnum());
}
f.write_c("%sml->typea = FL_IMAGE_LABEL;\n", f.indent());
f.write_c("%sml->typeb = FL_NORMAL_LABEL;\n", f.indent());
f.write_c("%sml->label(o);\n", f.indent());
} else {
image->write_code(f, 0, "o");
}
}
if ((Fluid.proj.i18n.type != fld::I18n_Type::NONE) && label() && label()[0]) {
Fl_Labeltype t = o->labeltype();
if (image) {
// label was already copied a few lines up
} else if ( t==FL_NORMAL_LABEL || t==FL_SHADOW_LABEL
|| t==FL_ENGRAVED_LABEL || t==FL_EMBOSSED_LABEL) {
start_menu_initialiser(f, menuItemInitialized, mname, i);
if (Fluid.proj.i18n.type==fld::I18n_Type::GNU) {
f.write_c("%so->label(%s(o->label()));\n",
f.indent(), Fluid.proj.i18n.gnu_function.c_str());
} else if (Fluid.proj.i18n.type==fld::I18n_Type::POSIX) {
f.write_c("%so->label(catgets(%s,%s,i+%d,o->label()));\n",
f.indent(),
Fluid.proj.i18n.posix_file.empty() ? "_catalog" : Fluid.proj.i18n.posix_file.c_str(),
Fluid.proj.i18n.posix_set.c_str(), msgnum());
}
}
}
for (int n=0; n < NUM_EXTRA_CODE; n++) {
if (!extra_code(n).empty() && !isdeclare(extra_code(n).c_str())) {
start_menu_initialiser(f, menuItemInitialized, mname, i);
f.write_c("%s%s\n", f.indent(), extra_code(n).c_str());
}
}
if (menuItemInitialized) {
f.indentation--;
f.write_c("%s}\n",f.indent());
}
}
void Menu_Item_Node::write_code2(fld::io::Code_Writer&) {}
////////////////////////////////////////////////////////////////
// This is the base class for widgets that contain a menu (ie
// subclasses of Fl_Menu_.
// This is a parent widget and menu items can be added as
// children. An actual array of Fl_Menu_Items is kept parallel
// with the child objects and updated as they change.
void Menu_Base_Node::build_menu() {
Fl_Menu_* w = (Fl_Menu_*)o;
// count how many Fl_Menu_Item structures needed:
int n = 0;
Node* q;
for (q = next; q && q->level > level; q = q->next) {
if (q->can_have_children()) n++; // space for null at end of submenu
n++;
}
if (!n) {
if (menusize) delete_menu((Fl_Menu_Item*)(w->menu()));
w->menu(nullptr);
menusize = 0;
} else {
n++; // space for null at end of menu
if (menusize<n) {
if (menusize) delete_menu((Fl_Menu_Item*)(w->menu()));
menusize = n+10;
w->menu(new Fl_Menu_Item[menusize]);
} else {
if (menusize) delete_dependents((Fl_Menu_Item*)(w->menu()));
}
// Menus are already built during the .fl file reading process, so if the
// end of a menu list is not read yet, the end markers (label==nullptr) will
// not be set, and deleting dependents will randomly free memory.
// Clearing the array should avoid that.
memset( (void*)w->menu(), 0, menusize * sizeof(Fl_Menu_Item) );
// fill them all in:
Fl_Menu_Item* m = (Fl_Menu_Item*)(w->menu());
int lvl = level+1;
for (q = next; q && q->level > level; q = q->next) {
Menu_Item_Node* i = (Menu_Item_Node*)q;
if (i->o->image()) {
if (i->o->label() && i->o->label()[0]) {
Fl_Multi_Label *ml = new Fl_Multi_Label;
ml->labela = (char*)i->o->image();
ml->labelb = i->o->label();
ml->typea = FL_IMAGE_LABEL;
ml->typeb = FL_NORMAL_LABEL;
ml->label(m);
} else {
i->o->image()->label(m);
}
} else {
m->label(i->o->label() ? i->o->label() : "(nolabel)");
m->labeltype(i->o->labeltype());
}
m->shortcut(((Fl_Button*)(i->o))->shortcut());
m->callback(nullptr,(void*)i);
m->flags = (i->flags() | i->o->type()) & ~FL_MENU_HEADLINE;
m->labelfont(i->o->labelfont());
m->labelsize(i->o->labelsize());
m->labelcolor(i->o->labelcolor());
if (q->can_have_children()) {lvl++; m->flags |= FL_SUBMENU;}
m++;
int l1 =
(q->next && q->next->is_a(Type::Menu_Item)) ? q->next->level : level;
while (lvl > l1) {m->label(nullptr); m++; lvl--;}
lvl = l1;
}
}
o->redraw();
}
Node* Menu_Base_Node::click_test(int, int) {
if (selected) return nullptr; // let user move the widget
Fl_Menu_* w = (Fl_Menu_*)o;
if (!menusize) return nullptr;
const Fl_Menu_Item* save = w->mvalue();
w->value((Fl_Menu_Item*)nullptr);
Fl::pushed(w);
w->handle(FL_PUSH);
Fl::focus(nullptr);
const Fl_Menu_Item* m = w->mvalue();
if (m) {
// restore the settings of toggles & radio items:
if (m->flags & (FL_MENU_RADIO | FL_MENU_TOGGLE)) build_menu();
return (Node*)(m->user_data());
}
w->value(save);
return this;
}
void Menu_Manager_Node::write_code2(fld::io::Code_Writer& f) {
if (next && next->is_a(Type::Menu_Item)) {
f.write_c("%s%s->menu(%s);\n", f.indent(), name() ? name() : "o",
f.unique_id(this, "menu", name(), label()));
}
Widget_Node::write_code2(f);
}
void Menu_Base_Node::copy_properties() {
Widget_Node::copy_properties();
Fl_Menu_ *s = (Fl_Menu_*)o, *d = (Fl_Menu_*)live_widget;
d->menu(s->menu());
d->down_box(s->down_box());
d->textcolor(s->textcolor());
d->textfont(s->textfont());
d->textsize(s->textsize());
}
////////////////////////////////////////////////////////////////
Fl_Menu_Item button_type_menu[] = {
{"normal",0,nullptr,(void*)nullptr},
{"popup1",0,nullptr,(void*)Fl_Menu_Button::POPUP1},
{"popup2",0,nullptr,(void*)Fl_Menu_Button::POPUP2},
{"popup3",0,nullptr,(void*)Fl_Menu_Button::POPUP3},
{"popup12",0,nullptr,(void*)Fl_Menu_Button::POPUP12},
{"popup23",0,nullptr,(void*)Fl_Menu_Button::POPUP23},
{"popup13",0,nullptr,(void*)Fl_Menu_Button::POPUP13},
{"popup123",0,nullptr,(void*)Fl_Menu_Button::POPUP123},
{nullptr}};
Menu_Button_Node Menu_Button_Node::prototype;
////////////////////////////////////////////////////////////////
Fl_Menu_Item dummymenu[] = {{"CHOICE"},{nullptr}};
Choice_Node Choice_Node::prototype;
Input_Choice_Node Input_Choice_Node::prototype;
void Input_Choice_Node::copy_properties() {
Widget_Node::copy_properties();
Fl_Input_Choice *s = (Fl_Input_Choice*)o, *d = (Fl_Input_Choice*)live_widget;
d->menu(s->menu());
d->down_box(s->down_box());
d->textcolor(s->textcolor());
d->textfont(s->textfont());
d->textsize(s->textsize());
}
Node* Input_Choice_Node::click_test(int, int) {
if (selected) return nullptr; // let user move the widget
Fl_Menu_* w = ((Fl_Input_Choice*)o)->menubutton();
if (!menusize) return nullptr;
const Fl_Menu_Item* save = w->mvalue();
w->value((Fl_Menu_Item*)nullptr);
Fl::pushed(w);
w->handle(FL_PUSH);
Fl::focus(nullptr);
const Fl_Menu_Item* m = w->mvalue();
if (m) {
// restore the settings of toggles & radio items:
if (m->flags & (FL_MENU_RADIO | FL_MENU_TOGGLE)) build_menu();
return (Node*)(m->user_data());
}
w->value(save);
return this;
}
////////////////////////////////////////////////////////////////
Menu_Bar_Node Menu_Bar_Node::prototype;
Fl_Menu_Item menu_bar_type_menu[] = {
{"Fl_Menu_Bar",0,nullptr,(void*)nullptr},
{"Fl_Sys_Menu_Bar",0,nullptr,(void*)1},
{nullptr}};
Menu_Bar_Node::Menu_Bar_Node()
: _proxy_name(nullptr)
{
}
Menu_Bar_Node::~Menu_Bar_Node() {
if (_proxy_name)
::free(_proxy_name);
}
/**
\brief Return true if this is an Fl_Sys_Menu_Bar.
This test fails if subclass() is the name of a class that the user may have
derived from Fl_Sys_Menu_Bar.
*/
bool Menu_Bar_Node::is_sys_menu_bar() {
if (o->type()==1) return true;
return (subclass() == "Fl_Sys_Menu_Bar");
}
std::string Menu_Bar_Node::sys_menubar_name() const {
if (!subclass().empty())
return subclass();
else
return "Fl_Sys_Menu_Bar";
}
const char *Menu_Bar_Node::sys_menubar_proxy_name() {
if (!_proxy_name)
_proxy_name = (char*)::malloc(128);
::snprintf(_proxy_name, 63, "%s_Proxy", sys_menubar_name().c_str());
return _proxy_name;
}
void Menu_Bar_Node::write_static(fld::io::Code_Writer& f) {
super::write_static(f);
if (is_sys_menu_bar()) {
f.write_h_once("#include <FL/Fl_Sys_Menu_Bar.H>");
if (is_in_class()) {
// Make room for a pointer to the enclosing class.
f.write_c_once( // must be less than 1024 bytes!
"\nclass %s: public %s {\n"
"public:\n"
" %s(int x, int y, int w, int h, const char *l=0L)\n"
" : %s(x, y, w, h, l) { }\n"
" void *_parent_class;\n"
"};\n",
sys_menubar_proxy_name(), sys_menubar_name().c_str(),
sys_menubar_proxy_name(), sys_menubar_name().c_str()
);
}
}
}
void Menu_Bar_Node::write_code1(fld::io::Code_Writer& f) {
super::write_code1(f);
if (is_sys_menu_bar() && is_in_class()) {
f.write_c("%s((%s*)%s)->_parent_class = (void*)this;\n",
f.indent(), sys_menubar_proxy_name(), name() ? name() : "o");
}
}
//void Menu_Bar_Node::write_code2(fld::io::Code_Writer& f) {
// super::write_code2(f);
//}
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