fl_type.cxx

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//
// "$Id: Fl_Type.cxx,v 1.1.1.1 2003/06/03 22:25:40 agno 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 1998-2002 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.H>
#include <FL/Fl_Browser_.H>
#include <FL/fl_draw.H>
#include <stdlib.h>
#include "../src/flstring.h"
#include <stdio.h>

#include "Fl_Type.h"

#include <FL/Fl_Pixmap.H>
#include "pixmaps/lock.xpm"
//#include "pixmaps/unlock.xpm"

static Fl_Pixmap	lock_pixmap(lock_xpm);
//static Fl_Pixmap	unlock_pixmap(unlock_xpm);

#include "pixmaps/flWindow.xpm"
#include "pixmaps/flButton.xpm"
#include "pixmaps/flCheckButton.xpm"
#include "pixmaps/flRoundButton.xpm"
#include "pixmaps/flBox.xpm"
#include "pixmaps/flGroup.xpm"
#include "pixmaps/flFunction.xpm"
#include "pixmaps/flCode.xpm"
#include "pixmaps/flCodeBlock.xpm"
#include "pixmaps/flDeclaration.xpm"
#include "pixmaps/flDeclarationBlock.xpm"
#include "pixmaps/flClass.xpm"
#include "pixmaps/flTabs.xpm"
#include "pixmaps/flInput.xpm"
#include "pixmaps/flChoice.xpm"
#include "pixmaps/flMenuitem.xpm"
#include "pixmaps/flMenubar.xpm"
#include "pixmaps/flSubmenu.xpm"
#include "pixmaps/flScroll.xpm"
#include "pixmaps/flTile.xpm"
#include "pixmaps/flWizard.xpm"
#include "pixmaps/flPack.xpm"
#include "pixmaps/flReturnButton.xpm"
#include "pixmaps/flLightButton.xpm"
#include "pixmaps/flRepeatButton.xpm"
#include "pixmaps/flMenuButton.xpm"
#include "pixmaps/flOutput.xpm"
#include "pixmaps/flTextDisplay.xpm"
#include "pixmaps/flTextEdit.xpm"
#include "pixmaps/flFileInput.xpm"
#include "pixmaps/flBrowser.xpm"
#include "pixmaps/flCheckBrowser.xpm"
#include "pixmaps/flFileBrowser.xpm"
#include "pixmaps/flClock.xpm"
#include "pixmaps/flHelp.xpm"
#include "pixmaps/flProgress.xpm"
#include "pixmaps/flSlider.xpm"
#include "pixmaps/flScrollBar.xpm"
#include "pixmaps/flValueSlider.xpm"
#include "pixmaps/flAdjuster.xpm"
#include "pixmaps/flCounter.xpm"
#include "pixmaps/flDial.xpm"
#include "pixmaps/flRoller.xpm"
#include "pixmaps/flValueInput.xpm"
#include "pixmaps/flValueOutput.xpm"

static Fl_Pixmap	window_pixmap(flWindow_xpm);
static Fl_Pixmap	button_pixmap(flButton_xpm);
static Fl_Pixmap	checkbutton_pixmap(flCheckButton_xpm);
static Fl_Pixmap	roundbutton_pixmap(flRoundButton_xpm);
static Fl_Pixmap	box_pixmap(flBox_xpm);
static Fl_Pixmap	group_pixmap(flGroup_xpm);
static Fl_Pixmap	function_pixmap(flFunction_xpm);
static Fl_Pixmap	code_pixmap(flCode_xpm);
static Fl_Pixmap	codeblock_pixmap(flCodeBlock_xpm);
static Fl_Pixmap	declaration_pixmap(flDeclaration_xpm);
static Fl_Pixmap	declarationblock_pixmap(flDeclarationBlock_xpm);
static Fl_Pixmap	class_pixmap(flClass_xpm);
static Fl_Pixmap	tabs_pixmap(flTabs_xpm);
static Fl_Pixmap	input_pixmap(flInput_xpm);
static Fl_Pixmap	choice_pixmap(flChoice_xpm);
static Fl_Pixmap	menuitem_pixmap(flMenuitem_xpm);
static Fl_Pixmap	menubar_pixmap(flMenubar_xpm);
static Fl_Pixmap	submenu_pixmap(flSubmenu_xpm);
static Fl_Pixmap	scroll_pixmap(flScroll_xpm);
static Fl_Pixmap	tile_pixmap(flTile_xpm);
static Fl_Pixmap	wizard_pixmap(flWizard_xpm);
static Fl_Pixmap	pack_pixmap(flPack_xpm);
static Fl_Pixmap	returnbutton_pixmap(flReturnButton_xpm);
static Fl_Pixmap	lightbutton_pixmap(flLightButton_xpm);
static Fl_Pixmap	repeatbutton_pixmap(flRepeatButton_xpm);
static Fl_Pixmap	menubutton_pixmap(flMenuButton_xpm);
static Fl_Pixmap	output_pixmap(flOutput_xpm);
static Fl_Pixmap	textdisplay_pixmap(flTextDisplay_xpm);
static Fl_Pixmap	textedit_pixmap(flTextEdit_xpm);
static Fl_Pixmap	fileinput_pixmap(flFileInput_xpm);
static Fl_Pixmap	browser_pixmap(flBrowser_xpm);
static Fl_Pixmap	checkbrowser_pixmap(flCheckBrowser_xpm);
static Fl_Pixmap	filebrowser_pixmap(flFileBrowser_xpm);
static Fl_Pixmap	clock_pixmap(flClock_xpm);
static Fl_Pixmap	help_pixmap(flHelp_xpm);
static Fl_Pixmap	progress_pixmap(flProgress_xpm);
static Fl_Pixmap	slider_pixmap(flSlider_xpm);
static Fl_Pixmap	scrollbar_pixmap(flScrollBar_xpm);
static Fl_Pixmap	valueslider_pixmap(flValueSlider_xpm);
static Fl_Pixmap	adjuster_pixmap(flAdjuster_xpm);
static Fl_Pixmap	counter_pixmap(flCounter_xpm);
static Fl_Pixmap	dial_pixmap(flDial_xpm);
static Fl_Pixmap	roller_pixmap(flRoller_xpm);
static Fl_Pixmap	valueinput_pixmap(flValueInput_xpm);
static Fl_Pixmap	valueoutput_pixmap(flValueOutput_xpm);

Fl_Pixmap *pixmap[] = { 0, &window_pixmap, &button_pixmap, &checkbutton_pixmap, &roundbutton_pixmap, /* 0..4 */
 &box_pixmap, &group_pixmap, &function_pixmap, &code_pixmap, &codeblock_pixmap, &declaration_pixmap, /* 5..10 */ 
 &declarationblock_pixmap, &class_pixmap, &tabs_pixmap, &input_pixmap, &choice_pixmap,               /* 11..15 */
 &menuitem_pixmap, &menubar_pixmap, &submenu_pixmap, &scroll_pixmap, &tile_pixmap, &wizard_pixmap,   /* 16..21 */
 &pack_pixmap, &returnbutton_pixmap, &lightbutton_pixmap, &repeatbutton_pixmap, &menubutton_pixmap,  /* 22..26 */
 &output_pixmap, &textdisplay_pixmap, &textedit_pixmap, &fileinput_pixmap, &browser_pixmap,          /* 27..32 */
 &checkbrowser_pixmap, &filebrowser_pixmap, &clock_pixmap, &help_pixmap, &progress_pixmap,	     /* 33..36 */
 &slider_pixmap, &scrollbar_pixmap, &valueslider_pixmap, &adjuster_pixmap, &counter_pixmap,          /* 37..41 */
 &dial_pixmap, &roller_pixmap, &valueinput_pixmap, &valueoutput_pixmap, /* 42..45*/ };

////////////////////////////////////////////////////////////////

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 + 18 + l->level * 12;
  if (l->new_selected) fl_color(fl_contrast(FL_BLACK,FL_SELECTION_COLOR));
  else fl_color(FL_BLACK);
  Fl_Pixmap *pm = pixmap[l->pixmapID()];
  if (pm) pm->draw(X-18, Y);
  if (l->is_public() == 0) lock_pixmap.draw(X - 17, Y);
  else if (l->is_public() > 0) ; //unlock_pixmap.draw(X - 17, Y);
  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 + 16 + 18 + 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 += 12*l->level + 18;
      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;