reader.cxx

一个小的非常好用的电子书阅读器源码

  }

  static void bunindent_cb(Fl_Widget* o, void* _data)
  {
    ((reader_ui*)_data)->bunindent = !(((reader_ui*)_data)->bunindent);
    ((reader_ui*)_data)->setfilter();
  }

  static void brepara_cb(Fl_Widget* o, void* _data)
  {
    ((reader_ui*)_data)->brepara = !(((reader_ui*)_data)->brepara);
    ((reader_ui*)_data)->setfilter();
  }

  static void bindenterp_cb(Fl_Widget* o, void* _data)
  {
    ((reader_ui*)_data)->bindenter += 2;
    ((reader_ui*)_data)->setfilter();
  }

  static void bindenterm_cb(Fl_Widget* o, void* _data)
  {
    if (((reader_ui*)_data)->bindenter < 2)
      ((reader_ui*)_data)->bindenter = 0;
    else
      ((reader_ui*)_data)->bindenter -= 2;
    ((reader_ui*)_data)->setfilter();
  }

  static void bdblspce_cb(Fl_Widget* o, void* _data)
  {
    ((reader_ui*)_data)->bdblspce = !(((reader_ui*)_data)->bdblspce);
    ((reader_ui*)_data)->setfilter();
  }

  static void info_cb(Fl_Widget* o, void* _data)
  {

    static Fl_Window* infowin = NULL;
    static Fl_Output* filename;
    static Fl_Output* filesize;
    static Fl_Output* textsize;
    static CBar* comprat;
    static Fl_Output* posn;
    static CBar* frcn;
    static Fl_Multiline_Output* about;
    if (infowin == NULL)
      {
	infowin = new Fl_Window(160,240);
	//infowin = new_cwindow(160,240);
	//infowin->border(0);
	//infowin->box(FL_UP_BOX);
	filename = new Fl_Output(45,5,110,14,"Filename");
	filename->textsize(10);
	filename->labelsize(10);

	filesize = new Fl_Output(45,25,110,14,"Filesize");
	filesize->textsize(10);
	filesize->labelsize(10);

	textsize = new Fl_Output(45,45,110,14,"Textsize");
	textsize->textsize(10);
	textsize->labelsize(10);

	comprat = new CBar(45,65,110,14,"Ratio %");
	comprat->labelsize(10);

	posn = new Fl_Output(45,85,110,14,"Location");
	posn->textsize(10);
	posn->labelsize(10);

	frcn = new CBar(45,105,110,14,"% Read");
	frcn->labelsize(10);

	about = new Fl_Multiline_Output(5,125,150,90);
	about->textsize(10);
	about->value("TWReader - $Name: V1_1 $\n\nA file reader program for the Agenda\n\nReads text, PalmDoc and ppms format files");

	Fl_Button *jump_accept = new Fl_Button(62,220,35,14,"Okay");
	jump_accept->labelsize(10);
	jump_accept->callback(Cancel_cb,_data);
	infowin->end();
	infowin->set_modal();
      }
    unsigned long fs,ts;
    char sz[20];
    ((reader_ui *)_data)->input->sizes(fs,ts);
    unsigned long pl = ((reader_ui *)_data)->input->locate();

    filename->value(((reader_ui *)_data)->g_filename);

    sprintf(sz,"%u",fs);
    filesize->value(sz);

    sprintf(sz,"%u",ts);
    textsize->value(sz);

    comprat->value(100-(100*fs + (ts >> 1))/ts);

    sprintf(sz,"%u",pl);
    posn->value(sz);

    frcn->value((100*pl + (ts >> 1))/ts);

    infowin->show();
  }

  reader_ui() : bstripcr(false), bunindent(false), brepara(false), bindenter(0), bdblspce(false), btight(false)
  {
    g_filename[0] = '\0';
#ifdef AGENDA
    window = Widget_Factory::new_window("TWReader");
    input = new myoutput(0, 0, Fl_Group::current()->w(), Fl_Group::current()->h());
    input->textfont(FL_HELVETICA);
    input->textsize(8);
    Fl_Group::current()->resizable(input);
    getprefs();
    input->tight = btight;
    int boolflag = FL_MENU_TOGGLE | ((bold) ? FL_MENU_VALUE : 0);
    int stripflag = FL_MENU_TOGGLE | ((bstripcr) ? FL_MENU_VALUE : 0);
    int unindentflag = FL_MENU_TOGGLE | ((bunindent) ? FL_MENU_VALUE : 0);
    int paraflag = FL_MENU_TOGGLE | ((brepara) ? FL_MENU_VALUE : 0);
    int dblflag = FL_MENU_TOGGLE | ((bdblspce) ? FL_MENU_VALUE : 0);
    int tightflag = FL_MENU_TOGGLE | ((btight) ? FL_MENU_VALUE : 0);
    Fl_Dockable_Window* toolbar = Widget_Factory::new_toolbar();
      Fl_Button *done_button = Widget_Factory::new_button("Done", quit_cb, this);
      Fl_Menu_Button* menubar = Widget_Factory::new_menu_button("File");
      menubar->add("Open",0,open_cb,this);
      menubar->add("Info",0,info_cb,this);
      menubar->add("Find",0,find_cb,this);
      menubar->add("Find Again",0,find2_cb,this);
      menubar->add("Jump",0,jump_cb,this);
#ifdef USEBKMKS
      menubar = Widget_Factory::new_menu_button("Marks");
      menubar->add("Mark",0,save_cb,this);
      menubar->add("Goto",0,getbkmk_cb,this);
      menubar->add("Delete",0,delbkmk_cb,this);
      menubar->add("Autogen",0,autogenbkmk_cb,this);
      menubar->add("Clear",0,clrbkmk_cb,this);
      menubar->add("Tidy",0,tidybkmk_cb,this);
#endif
      menubar = Widget_Factory::new_menu_button("View");
      menubar->add("Magnify",0,mag_cb,this);
      menubar->add("Reduce",0,red_cb,this);
      menubar->add("Font",0,fnt_cb,this);
      menubar->add("Bold",0,bld_cb,this,boolflag);
      menubar->add("Tight",0,tight_cb,this,tightflag);
      menubar = Widget_Factory::new_menu_button("Format");
      menubar->add("StripCR",0,bstripcr_cb,this,stripflag);
      menubar->add("Unindent",0,bunindent_cb,this,unindentflag);
      menubar->add("Repara",0,brepara_cb,this,paraflag);
      menubar->add("Indent+",0,bindenterp_cb,this,0);
      menubar->add("Indent-",0,bindenterm_cb,this,0);
      menubar->add("DblSpace",0,bdblspce_cb,this,dblflag);
    toolbar->end();
    window->add_dockable(toolbar,1);
    window->end();
#else
    window = new Fl_Window(Fl::w()/2,Fl::h()/2,"TWReader");
#ifdef WS
    input = new myoutput(0, 20, window->w(), window->h()-20);
#else
    input = new myoutput(0, 12, window->w(), window->h()-12);
#endif
    input->textfont(FL_HELVETICA);
    input->textsize(12);
    window->resizable(input);
    getprefs();
    input->tight = btight;
    int boolflag = FL_MENU_TOGGLE | ((bold) ? FL_MENU_VALUE : 0);
    int stripflag = FL_MENU_TOGGLE | ((bstripcr) ? FL_MENU_VALUE : 0);
    int unindentflag = FL_MENU_TOGGLE | ((bunindent) ? FL_MENU_VALUE : 0);
    int paraflag = FL_MENU_TOGGLE | ((brepara) ? FL_MENU_VALUE : 0);
    int dblflag = FL_MENU_TOGGLE | ((bdblspce) ? FL_MENU_VALUE : 0);
    int tightflag = FL_MENU_TOGGLE | ((btight) ? FL_MENU_VALUE : 0);
    static Fl_Menu_Item menuitems[] =
      {
	{ "File", 0, 0, 0, FL_SUBMENU },
	{ "&Open", FL_ALT+'o', open_cb, this },
	{ "&Quit", FL_ALT+'q', quit_cb, this},
	{ "&Info", FL_ALT+'i', info_cb,this},
	{ 0 },
	{ "Search", 0, 0, 0, FL_SUBMENU },
	{ "&Find",FL_ALT+'f',find_cb,this},
	{"Find A&gain",FL_ALT+'g',find2_cb,this},
	{"&Jump",FL_ALT+'j',jump_cb,this},
#ifdef USEBKMKS
	{ "&Mark Current", FL_ALT+'m', save_cb,this},
	{"Goto mar&k",FL_ALT+'k',getbkmk_cb,this},
	{ "More Bookmarks", 0, 0, 0, FL_SUBMENU },
	{ "De&lete Mark", FL_ALT+'l', delbkmk_cb, this},
	{"&Autogen",FL_ALT+'a',autogenbkmk_cb,this},
	{"&Clear",FL_ALT+'c',clrbkmk_cb,this},
	{"&Tidy",FL_ALT+'t',tidybkmk_cb,this},
	{0},
#endif
	{0},
	{"View",0,0,0,FL_SUBMENU},
	{"&Zoom in",FL_ALT+'z',mag_cb,this},
	{"&Zoom out",FL_ALT+'Z',red_cb,this},
	{"Fo&nt",FL_ALT+'n',fnt_cb,this},
	{"Bold",FL_ALT+'b',bld_cb,this,boolflag},
	{"Tight",FL_ALT+'w',tight_cb,this,tightflag},
	{0},
	{"Format",0,0,0,FL_SUBMENU},
	{"StripCR",0,bstripcr_cb,this,stripflag},
	{"Unindent",0,bunindent_cb,this,unindentflag},
	{"Repara",0,brepara_cb,this,paraflag},
	{"Indent+",0,bindenterp_cb,this,0},
	{"Indent-",0,bindenterm_cb,this,0},
	{"DblSpace",0,bdblspce_cb,this,dblflag},
	{0},
	{0}
      };
#ifdef WS
    Fl_Menu_Bar *menubar= new Fl_Menu_Bar(0,0,window->w(),20);
#else
    Fl_Menu_Bar *menubar= new Fl_Menu_Bar(0,0,window->w(),12);
    menubar->textsize(8);
#endif
    menubar->menu(menuitems);
    window->end();
#endif
    //    input = new myoutput(0, 0, Fl_Group::current()->w(), Fl_Group::current()->h(),toolbar);
    //
    //    Fl_Group::current()->resizable(input);
    //    input->callback((Fl_Callback *)changed_cb);
    //    input->when(FL_WHEN_CHANGED);
#ifdef USEBKMKS
    setupbkmks();
#endif
    //  window->callback((Fl_Callback *)quit_cb);
    setfilter();
    window->show();
  }
  void load_file(char *newfile) {
#ifdef USEBKMKS
    save_current(NULL,this);
#endif
    strcpy(g_filename,newfile);
#ifdef USEBKMKS
    input->load_file(newfile,initlocation(newfile));
#else
    input->load_file(newfile,0);
#endif
  }
  void locate(unsigned int lcn) { input->locate(lcn); }

  void getprefs()
  {
    prefs_t prefs;
#ifdef USEBKMKS
    DBT key, data;
    memset(&key,0,sizeof(key));
    memset(&data,0,sizeof(data));
    char buffer[] = PREFRNCE;
    key.data = buffer;
    key.size = strlen(buffer);
    int ret = bkmks->get(bkmks, &key, &data, 0);
    if (ret != 0 || data.size != sizeof(prefs))
      {
	//	fl_alert("Incompatible or missing preferences");
      }
    else
      {
	memcpy(&prefs,data.data,data.size);
	//printf("%d:%d:%d\n",prefs.textsize,prefs.textfont,prefs.bold);
	input->textsize(prefs.textsize);
	input->textfont(prefs.textfont);
	if (prefs.bold)
	  {
	    bold = true;
	  }
	bstripcr = prefs.bstripcr;
	bunindent = prefs.bunindent;
	brepara = prefs.brepara;
	bdblspce = prefs.bdblspce;
	btight = prefs.btight;
	bindenter = prefs.bindenter;
      }
#else
    FILE *f = fopen(".twr-bkmks","rb");
    if (f != NULL)
      {
	size_t n = fread(&prefs,sizeof(prefs),1,f);
	if (n == 1)
	  {
	    input->textsize(prefs.textsize);
	    input->textfont(prefs.textfont);
	    if (prefs.bold)
	      {
		bold = true;
	      }
	    bstripcr = prefs.bstripcr;
	    bunindent = prefs.bunindent;
	    brepara = prefs.brepara;
	    bdblspce = prefs.bdblspce;
	    btight = prefs.btight;
	    bindenter = prefs.bindenter;
	    size_t lcn;
	    n = fread(&lcn,sizeof(lcn),1,f);
	    if (n == 1)
	      {
		char filename[1024];
		memset(filename,0,1024);
		n = fread(filename,sizeof(char),1023,f);
		strcpy(g_filename,filename);
		if (n > 0)
		  {
		    setfilter();
		    input->load_file(filename,lcn);
		  }
	      }
	  }
	fclose(f);
      }
#endif
  }

  void setprefs()
  {
    prefs_t prefs;
    prefs.textsize = input->textsize();
    prefs.textfont = input->textfont();
    prefs.bold = bold;
    prefs.bstripcr = bstripcr;
    prefs.bunindent = bunindent;
    prefs.brepara = brepara;
    prefs.bdblspce = bdblspce;
    prefs.btight = btight;
    prefs.bindenter = bindenter;
    //printf("%d:%d:%d\n",prefs.textsize,prefs.textfont,prefs.bold);
#ifdef USEBKMKS
    DBT key, data;
    memset(&key,0,sizeof(key));
    memset(&data,0,sizeof(data));
    char buffer[] = PREFRNCE;
    key.data = buffer;
    key.size = strlen(buffer);
    //printf("%d:%d:%d\n",prefs.textsize,prefs.textfont,prefs.bold);
    data.data = &prefs;
    data.size = sizeof(prefs);
    int ret = bkmks->put(bkmks, &key, &data, 0);
#else
    FILE *f = fopen(".twr-bkmks","wb");
    fwrite(&prefs,sizeof(prefs),1,f);
    size_t lcn = input->pagelocate();
    if (g_filename[0] != '\0')
      {
	fwrite(&lcn,sizeof(lcn),1,f);
	fwrite(g_filename,1,strlen(g_filename),f);
      }
    fclose(f);
#endif
  }
};

#ifdef USEBKMKS
unsigned int reader_ui::initlocation(char *file) {
  DBT key, data;
  memset(&key,0,sizeof(key));
  memset(&data,0,sizeof(data));
  key.data = file;
  key.size = strlen(file);
  getdefaultbkmk(file,&key);
  int ret = bkmks->get(bkmks, &key, &data, 0);
  if (ret == 0)
    {
      unsigned long lcn;
      memcpy(&lcn,data.data,sizeof(lcn));
      return lcn;
    }
  else
    {
      return 0;
    }
}
#endif

int main(int argc, char **argv) {
#ifdef USEBKMKS
  bkmks = dbopen(".twr-bkmks", O_RDWR|O_CREAT, S_IRWXU, DB_BTREE, NULL);
  //  fl_message_font(FL_HELVETICA,8);
  if (bkmks == NULL)
    {
      fl_alert("ERROR: can't open bookmarks - the file may be corrupt.");
      return 10;
    }
#endif

  reader_ui reader;

  filename[0] = '\0';
  search[0] = '\0';

  if (argc > 1) {
    unsigned int lcn = 0;
    if (argc > 2) lcn = atoi(argv[2]);
    reader.load_file(argv[1]);
    
    if (argc > 2) reader.locate(lcn);
    
  }
  else
    {
#ifdef USEBKMKS
      DBT key, data;
      memset(&key,0,sizeof(key));
      memset(&data,0,sizeof(data));
      char newfile[1024];
      char buffer[1024];
      strcpy(buffer,LASTFILE);
      key.data = buffer;
      key.size = strlen(buffer);
      int ret = bkmks->get(bkmks, &key, &data, 0);
      if (ret == 0)
	{
	  memcpy(newfile,data.data,data.size);
	  newfile[data.size] = '\0';
	  reader.load_file(newfile);
	}
#endif
    }
  fl_message_font(FL_HELVETICA,8);
  return Fl::run();
}
//
// End of "$Id: reader.cxx,v 1.36 2001/10/10 19:55:20 agenda Exp $".
//