fl_type.h

PIXIL is a small footprint operating environment, complete with PDA PIM applications, a browser and

//
// "$Id: Fl_Type.h,v 1.1.1.1 2003/08/07 21:18:39 jasonk Exp $"
//
// Widget type header file 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.
//
// There is also a single "factory" instance of each type of this.
// The method "make()" is called on this factory to create a new
// instance of this object.  It could also have a "copy()" function,
// but it was easier to implement this by using the file read/write
// that is needed to save the setup anyways.
// Copyright 1998-1999 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 "[e-mail]".
//

#include <FL/Fl_Widget.H>
#include <FL/Fl_Menu.H>
#include "Fluid_Image.h"

class Fl_Type {

  friend class Widget_Browser;
  friend Fl_Widget *make_type_browser(int,int,int,int,const char *l=0);
  friend class Fl_Window_Type;
  virtual void setlabel(const char *); // virtual part of label(char*)

protected:

  Fl_Type();

  const char *name_;
  const char *label_;
  const char *callback_;
  const char *user_data_;
  const char *user_data_type_;

public:	// things that should not be public:

  Fl_Type *parent; // parent, which is previous in list
  char new_selected; // browser highlight
  char selected; // copied here by selection_changed()
  char open_;	// state of triangle in browser
  char visible; // true if all parents are open
  char rtti;	// hack because I have no rtti, this is 0 for base class
  int level;	// number of parents over this
  static Fl_Type *first, *last; // linked list of all objects
  Fl_Type *next, *prev;	// linked list of all objects

  Fl_Type *factory;
  const char *callback_name();

public:

  virtual ~Fl_Type();
  virtual Fl_Type *make() = 0;

  void add(Fl_Type *parent); // add as new child
  void insert(Fl_Type *n); // insert into list before n
  Fl_Type* remove();	// remove from list
  void move_before(Fl_Type*); // move before a sibling

  virtual const char *title(); // string for browser
  virtual const char *type_name() = 0; // type for code output

  const char *name() const {return name_;}
  void name(const char *);
  const char *label() const {return label_;}
  void label(const char *);
  const char *callback() const {return callback_;}
  void callback(const char *);
  const char *user_data() const {return user_data_;}
  void user_data(const char *);
  const char *user_data_type() const {return user_data_type_;}
  void user_data_type(const char *);

  virtual Fl_Type* click_test(int,int);
  virtual void add_child(Fl_Type*, Fl_Type* beforethis);
  virtual void move_child(Fl_Type*, Fl_Type* beforethis);
  virtual void remove_child(Fl_Type*);

  static Fl_Type *current;  // most recently picked object
  virtual void open();	// what happens when you double-click

  // read and write data to a saved file:
  void write();
  virtual void write_properties();
  virtual void read_property(const char *);
  virtual int read_fdesign(const char*, const char*);

  // write code, these are called in order:
  virtual void write_static(); // write static stuff to .c file
  virtual void write_code1(); // code and .h before children
  virtual void write_code2(); // code and .h after children

  // fake rtti:
  virtual int is_parent() const;
  virtual int is_widget() const;
  virtual int is_button() const;
  virtual int is_valuator() const;
  virtual int is_menu_item() const;
  virtual int is_menu_button() const;
  virtual int is_group() const;
  virtual int is_window() const;
  virtual int is_code_block() const;
  virtual int is_decl_block() const;
  virtual int is_class() const;

  const char* class_name() const;
};

class Fl_Function_Type : public Fl_Type {
  const char* return_type;
  char public_, cdecl_, constructor, havewidgets;
public:
  Fl_Type *make();
  void write_code1();
  void write_code2();
  void open();
  int ismain() {return name_ == 0;}
  virtual const char *type_name() {return "Function";}
  virtual const char *title() {
    return name() ? name() : "main()";
  }
  int is_parent() const {return 1;}
  int is_code_block() const {return 1;}
  void write_properties();
  void read_property(const char *);
};

class Fl_Code_Type : public Fl_Type {
public:
  Fl_Type *make();
  void write_code1();
  void write_code2();
  void open();
  virtual const char *type_name() {return "code";}
  int is_code_block() const {return 0;}
};

class Fl_CodeBlock_Type : public Fl_Type {
  const char* after;
public:
  Fl_Type *make();
  void write_code1();
  void write_code2();
  void open();
  virtual const char *type_name() {return "codeblock";}
  int is_code_block() const {return 1;}
  int is_parent() const {return 1;}
  void write_properties();
  void read_property(const char *);
};

class Fl_Decl_Type : public Fl_Type {
  char public_;
public:
  Fl_Type *make();
  void write_code1();
  void write_code2();
  void open();
  virtual const char *type_name() {return "decl";}
  void write_properties();
  void read_property(const char *);
};

class Fl_DeclBlock_Type : public Fl_Type {
  const char* after;
public:
  Fl_Type *make();
  void write_code1();
  void write_code2();
  void open();
  virtual const char *type_name() {return "declblock";}
  void write_properties();
  void read_property(const char *);
  int is_parent() const {return 1;}
  int is_decl_block() const {return 1;}
};

class Fl_Class_Type : public Fl_Type {
  const char* subclass_of;
  char public_;
public:
  // state variables for output:
  char write_public_state; // true when public: has been printed
  Fl_Class_Type* parent_class; // save class if nested
//
  Fl_Type *make();
  void write_code1();
  void write_code2();
  void open();
  virtual const char *type_name() {return "class";}
  int is_parent() const {return 1;}
  int is_decl_block() const {return 1;}
  int is_class() const {return 1;}
  void write_properties();
  void read_property(const char *);
};

#define NUM_EXTRA_CODE 4

class Fl_Widget_Type : public Fl_Type {
  virtual Fl_Widget *widget(int,int,int,int) = 0;
  virtual Fl_Widget_Type *_make() = 0; // virtual constructor
  virtual void setlabel(const char *);

  const char *extra_code_[NUM_EXTRA_CODE];
  const char *subclass_;
  uchar hotspot_;

protected:

  void write_static();
  void write_code1();
  void write_widget_code();
  void write_extra_code();
  void write_block_close();
  void write_code2();

public:

  const char *xclass; // junk string, used for shortcut
  Fl_Widget *o;
  int public_;

  Fluid_Image *image;
  void setimage(Fluid_Image *);

  Fl_Widget_Type();
  Fl_Type *make();
  void open();

  const char *extra_code(int n) const {return extra_code_[n];}
  void extra_code(int n,const char *);
  const char *subclass() const {return subclass_;}
  void subclass(const char *);
  uchar hotspot() const {return hotspot_;}
  void hotspot(uchar v) {hotspot_ = v;}
  uchar resizable() const;
  void resizable(uchar v);

  virtual int textstuff(int what, Fl_Font &, int &, Fl_Color &);
  virtual Fl_Menu_Item *subtypes();

  virtual int is_widget() const;

  virtual void write_properties();
  virtual void read_property(const char *);
  virtual int read_fdesign(const char*, const char*);