text_dialog.cpp

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  label211 = gtk_label_new(_("Text Encoder:"));
  gtk_widget_show(label211);
  gtk_table_attach(GTK_TABLE(table8), label211, 0, 1, 1, 2,
                   (GtkAttachOptions)(GTK_FILL),
                   (GtkAttachOptions)(0), 0, 0);
  gtk_misc_set_alignment(GTK_MISC(label211), 0, 0.5);

  label212 = gtk_label_new(_("Repeat Time:"));
  gtk_widget_show(label212);
  gtk_table_attach(GTK_TABLE(table8), label212, 0, 1, 2, 3,
                   (GtkAttachOptions)(GTK_FILL),
                   (GtkAttachOptions)(0), 0, 0);
  gtk_misc_set_alignment(GTK_MISC(label212), 0, 0.5);

  TextRepeatTimeSpinner_adj = gtk_adjustment_new(tp != NULL ?
						 tp->GetFloatValue(CFG_TEXT_REPEAT_TIME_SECS) : 1, 0, 100, 1, 10, 10);
  TextRepeatTimeSpinner = gtk_spin_button_new(GTK_ADJUSTMENT(TextRepeatTimeSpinner_adj), 1, 1);
  gtk_widget_show(TextRepeatTimeSpinner);
  gtk_table_attach(GTK_TABLE(table8), TextRepeatTimeSpinner, 1, 2, 2, 3,
                   (GtkAttachOptions)(GTK_EXPAND | GTK_FILL),
                   (GtkAttachOptions)(0), 0, 0);
  gtk_spin_button_set_numeric(GTK_SPIN_BUTTON(TextRepeatTimeSpinner), TRUE);

  label213 = gtk_label_new(_("Text Profile:"));
  gtk_widget_show(label213);
  gtk_table_attach(GTK_TABLE(table8), label213, 0, 1, 0, 1,
                   (GtkAttachOptions)(GTK_FILL),
                   (GtkAttachOptions)(0), 0, 0);
  gtk_misc_set_alignment(GTK_MISC(label213), 0, 0.5);

  TextProfileName = gtk_entry_new();
  gtk_widget_show(TextProfileName);
  gtk_table_attach(GTK_TABLE(table8), TextProfileName, 1, 2, 0, 1,
                   (GtkAttachOptions)(GTK_EXPAND | GTK_FILL),
                   (GtkAttachOptions)(0), 0, 0);

  label224 = gtk_label_new(_("Encoder Settings:"));
  gtk_widget_show(label224);
  gtk_table_attach(GTK_TABLE(table8), label224, 0, 1, 3, 4,
                   (GtkAttachOptions)(GTK_FILL),
                   (GtkAttachOptions)(0), 0, 0);
  gtk_misc_set_alignment(GTK_MISC(label224), 0, 0.5);

  TextEncoderSettingsButton = gtk_button_new();
  gtk_widget_show(TextEncoderSettingsButton);
  gtk_table_attach(GTK_TABLE(table8), TextEncoderSettingsButton, 1, 2, 3, 4,
                   (GtkAttachOptions)(GTK_FILL),
                   (GtkAttachOptions)(0), 0, 0);

  alignment38 = gtk_alignment_new(0.5, 0.5, 0, 0);
  gtk_widget_show(alignment38);
  gtk_container_add(GTK_CONTAINER(TextEncoderSettingsButton), alignment38);

  hbox117 = gtk_hbox_new(FALSE, 2);
  gtk_widget_show(hbox117);
  gtk_container_add(GTK_CONTAINER(alignment38), hbox117);

  image43 = gtk_image_new_from_stock("gtk-preferences", GTK_ICON_SIZE_BUTTON);
  gtk_widget_show(image43);
  gtk_box_pack_start(GTK_BOX(hbox117), image43, FALSE, FALSE, 0);

  label225 = gtk_label_new_with_mnemonic(_("Settings"));
  gtk_widget_show(label225);
  gtk_box_pack_start(GTK_BOX(hbox117), label225, FALSE, FALSE, 0);

  dialog_action_area10 = GTK_DIALOG(TextProfileDialog)->action_area;
  gtk_widget_show(dialog_action_area10);
  gtk_button_box_set_layout(GTK_BUTTON_BOX(dialog_action_area10), GTK_BUTTONBOX_END);

  cancelbutton8 = gtk_button_new_from_stock("gtk-cancel");
  gtk_widget_show(cancelbutton8);
  gtk_dialog_add_action_widget(GTK_DIALOG(TextProfileDialog), cancelbutton8, GTK_RESPONSE_CANCEL);
  GTK_WIDGET_SET_FLAGS(cancelbutton8, GTK_CAN_DEFAULT);

  okbutton10 = gtk_button_new_from_stock("gtk-ok");
  gtk_widget_show(okbutton10);
  gtk_dialog_add_action_widget(GTK_DIALOG(TextProfileDialog), okbutton10, GTK_RESPONSE_OK);
  GTK_WIDGET_SET_FLAGS(okbutton10, GTK_CAN_DEFAULT);

  g_signal_connect((gpointer) TextProfileDialog, "response",
                    G_CALLBACK(on_TextProfileDialog_response),
                    tp);
  g_signal_connect((gpointer) TextProfileEncoder, "changed",
                    G_CALLBACK(on_TextProfileEncoder_changed),
                    tp);
  g_signal_connect((gpointer) TextEncoderSettingsButton, "clicked",
                    G_CALLBACK(on_TextEncoderSettingsButton_clicked),
                    tp);

  /* Store pointers to all widgets, for use by lookup_widget(). */
  GLADE_HOOKUP_OBJECT_NO_REF(TextProfileDialog, TextProfileDialog, "TextProfileDialog");
  GLADE_HOOKUP_OBJECT_NO_REF(TextProfileDialog, dialog_vbox11, "dialog_vbox11");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, table8, "table8");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, TextProfileEncoder, "TextProfileEncoder");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, label211, "label211");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, label212, "label212");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, TextRepeatTimeSpinner, "TextRepeatTimeSpinner");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, label213, "label213");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, TextProfileName, "TextProfileName");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, label224, "label224");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, TextEncoderSettingsButton, "TextEncoderSettingsButton");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, alignment38, "alignment38");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, hbox117, "hbox117");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, image43, "image43");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, label225, "label225");
  GLADE_HOOKUP_OBJECT_NO_REF(TextProfileDialog, dialog_action_area10, "dialog_action_area10");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, cancelbutton8, "cancelbutton8");
  GLADE_HOOKUP_OBJECT(TextProfileDialog, okbutton10, "okbutton10");

  uint encoderIndex = 0;
  uint ix = 0;
  encoderNames = (const char **)malloc(text_encoder_table_size *
				       sizeof(const char *));
  for (ix = 0; ix < text_encoder_table_size; ix++) {
    if (tp != NULL && 
	strcasecmp(tp->GetStringValue(CFG_TEXT_ENCODING),
		   text_encoder_table[ix].text_encoding) == 0) {
      encoderIndex = ix;
    }
    encoderNames[ix] = text_encoder_table[ix].dialog_selection_name;
  }
  CreateOptionMenu(TextProfileEncoder,
		   encoderNames, 
		   text_encoder_table_size, 
		   encoderIndex);
  if (tp != NULL) {
    gtk_entry_set_text(GTK_ENTRY(TextProfileName), 
		       tp->GetStringValue(CFG_TEXT_PROFILE_NAME));
    gtk_widget_set_sensitive(TextProfileName, false);
  }
  gtk_widget_show(TextProfileDialog);

}


/***************************************************************************
 * Text File Dialog for running events
 ***************************************************************************/
static guint timer_id = 0;
static const GtkTargetEntry drop_types[] = {
  { "text/plain", 0, 1 },
  { "text/uri-list", 0, 2},
  { "text/x-moz-url", 0, 3},
  { "text/html", 0, 4},
  { "UTF8_STRING", 0, 5},
  { "STRING", 0, 6},
};

typedef struct text_line_offset_t {
  text_line_offset_t *next_line;
  uint index;
  uint64_t offset;
} text_line_offset_t;

typedef struct text_file_data_t {
  FILE *m_file;
  char m_buffer[PATH_MAX]; // a nice large number
  uint m_index; // line in file we're on
  uint m_max_index;
  text_line_offset_t *m_line_offset_head, *m_line_offset_tail;
};

static bool ReadNextLine (text_file_data_t *tptr)
{
  off_t start;
  start = ftello(tptr->m_file);
  if (fgets(tptr->m_buffer, PATH_MAX, tptr->m_file) == NULL) {
    tptr->m_max_index = tptr->m_index;
    return false;
  }
  char *end = tptr->m_buffer + strlen(tptr->m_buffer) - 1;
  while (isspace(*end) && end > tptr->m_buffer) {
    *end = '\0';
    end--;
  }
  debug_message("Read line %u %s", tptr->m_index, tptr->m_buffer);
  
  if (tptr->m_line_offset_tail == NULL ||
      tptr->m_line_offset_tail->index < tptr->m_index) {
    text_line_offset_t *tlptr = MALLOC_STRUCTURE(text_line_offset_t);
    tlptr->next_line = NULL;
    tlptr->index = tptr->m_index;
    tlptr->offset = start;
    if (tptr->m_line_offset_head == NULL) {
      tptr->m_line_offset_head = tptr->m_line_offset_tail = tlptr;
    } else {
      tptr->m_line_offset_tail->next_line = tlptr;
      tptr->m_line_offset_tail = tlptr;
    }
    debug_message("Add to end");
  }
  tptr->m_index++;
  return true;
}

static void GoToLine (text_file_data_t *tptr, text_line_offset_t *tlptr) 
{
  debug_message("Go to line - %u offset "U64,
		tlptr->index, tlptr->offset);
  fseeko(tptr->m_file, tlptr->offset, SEEK_SET);
  tptr->m_index = tlptr->index;
  ReadNextLine(tptr);
}

static void GoToLine (text_file_data_t *tptr, uint index)
{
  uint ix;
  debug_message("go to line %u", index);
  if (tptr->m_line_offset_tail != NULL) {
    debug_message("tail index %u", index);
  }
  if (tptr->m_line_offset_tail != NULL &&
      tptr->m_line_offset_tail->index >= index) {
    debug_message("Looking for tail");
    text_line_offset_t *tlptr;
    for (ix = 0, tlptr = tptr->m_line_offset_head; ix < index; ix++) {
      tlptr = tlptr->next_line;
    }
    if (tlptr->index != index) {
      error_message("Seek not right %u %u", tlptr->index, index);
    }
    GoToLine(tptr, tlptr);
    return;
  }
  uint start_index = 0;
  if (tptr->m_line_offset_tail) {
    start_index = tptr->m_line_offset_tail->index;
    GoToLine(tptr, tptr->m_line_offset_tail);
  }
  for (ix = start_index; ix < index; ix++) {
    if (ReadNextLine(tptr) == false)
      return;
  }
}

static void GoToLine (text_file_data_t *tptr, int index)
{
  return GoToLine(tptr, (uint)index);
}

static gboolean
on_TextFileDialog_delete_event         (GtkWidget       *widget,
                                        GdkEvent        *event,
                                        gpointer         user_data)
{
  // don't do anything - the main window will control this dialog
  return TRUE;
}

static text_file_data_t *GetTextFileDataFromUserData (gpointer user_data)
{
  GtkWidget *dialog = GTK_WIDGET(user_data);
  
  return (text_file_data_t *)lookup_widget(dialog, "TextFileData");
}

static void DisplayLineInBuffer (gpointer user_data, 
				 text_file_data_t *tptr)
{
  GtkWidget *dialog = GTK_WIDGET(user_data);
  GtkWidget *entry = lookup_widget(dialog, "LineEntry");
  gtk_entry_set_text(GTK_ENTRY(entry), tptr->m_buffer);
  debug_message("Set text to %s", tptr->m_buffer);
}
  
static void
on_TextFileDialog_destroy         (GtkObject       *widget,
				   gpointer         user_data)
{
  text_file_data_t *tptr = 
    (text_file_data_t *)lookup_widget(GTK_WIDGET(widget), "TextFileData");

  if (timer_id != 0)
    gtk_timeout_remove(timer_id);
  if (tptr != NULL) {
    text_line_offset_t *tlptr = tptr->m_line_offset_head;
    while (tlptr != NULL) {
      tptr->m_line_offset_head = tlptr->next_line;
      free(tlptr);
      tlptr = tptr->m_line_offset_head;
    }
    free(tptr);
  }
}

static void
on_StartButton_clicked                 (GtkButton       *button,
                                        gpointer         user_data)
{
  debug_message("start clicked");
  text_file_data_t *tptr = GetTextFileDataFromUserData(user_data);
  GoToLine(tptr, 0);
  DisplayLineInBuffer(user_data, tptr);
}


static void
on_PrevButton_clicked                  (GtkButton       *button,
                                        gpointer         user_data)
{
  debug_message("prev clicked");
  text_file_data_t *tptr = GetTextFileDataFromUserData(user_data);
  uint index = tptr->m_index;
  if (tptr->m_index > 2) index = tptr->m_index - 2;
  else index = 0;
  GoToLine(tptr, index);
  DisplayLineInBuffer(user_data, tptr);
}


static void
on_NextButton_clicked                  (GtkButton       *button,
                                        gpointer         user_data)
{
  text_file_data_t *tptr = GetTextFileDataFromUserData(user_data);
  ReadNextLine(tptr);
  DisplayLineInBuffer(user_data, tptr);
}


static void
on_EndButton_clicked                   (GtkButton       *button,
                                        gpointer         user_data)
{
  text_file_data_t *tptr = GetTextFileDataFromUserData(user_data);
  if (tptr->m_line_offset_tail != NULL) {
    if (tptr->m_index < tptr->m_line_offset_tail->index) {
      GoToLine(tptr, tptr->m_line_offset_tail);
    }
  }
  while (ReadNextLine(tptr));
  DisplayLineInBuffer(user_data, tptr);
}

gint on_TextDialog_timeout (gpointer user_data)
{
  GtkWidget *dialog = GTK_WIDGET(user_data);
  GtkWidget *wid = lookup_widget(dialog, "statusbar2");
  gtk_statusbar_pop(GTK_STATUSBAR(wid), 0);
  gtk_statusbar_push(GTK_STATUSBAR(wid), 0, "");
  timer_id = 0;
  return 0;
}

static void
on_SendButton_clicked                  (GtkButton       *button,
                                        gpointer         user_data)
{
  GtkWidget *dialog = GTK_WIDGET(user_data);
  GtkWidget *wid = lookup_widget(dialog, "LineEntry");
  const char *line = gtk_entry_get_text(GTK_ENTRY(wid));
  if (AVFlow->GetTextSource() == NULL) {
    error_message("no text source");
    return;
  }
  AVFlow->GetTextSource()->SourceString(line);
  
  char buffer[60];
  snprintf(buffer, sizeof(buffer),"Wrote: %.25s...", line);
  wid = lookup_widget(dialog, "statusbar2");
  gtk_statusbar_pop(GTK_STATUSBAR(wid), 0);
  gtk_statusbar_push(GTK_STATUSBAR(wid), 0, buffer);
  if (timer_id != 0) {
    gtk_timeout_remove(timer_id);
  }
  timer_id = gtk_timeout_add(3 * 1000, 
			     on_TextDialog_timeout, 
			     user_data);
  text_file_data_t *tptr = GetTextFileDataFromUserData(user_data);
  if (tptr != NULL) {
    ReadNextLine(tptr);
    DisplayLineInBuffer(user_data, tptr);
  } 
}

static void
on_LineEntry_activate  (GtkEntry *ent,
			gpointer user_data)
{
  on_SendButton_clicked(NULL, user_data);
}
static void on_drag_data_received_entry (GtkWidget *widget,
					 GdkDragContext *context,