自学教程：C++ GB_IS_TERMINAL_VIEW函数代码示例

static voidgb_terminal_set_split_view (IdeLayoutView   *view,                            gboolean         split_view){  GbTerminalView *self = (GbTerminalView *)view;  GtkStyleContext *style_context;  g_assert (GB_IS_TERMINAL_VIEW (self));  g_return_if_fail (GB_IS_TERMINAL_VIEW (self));  if (split_view && (self->terminal_bottom != NULL))    return;  if (!split_view && (self->terminal_bottom == NULL))    return;  if (split_view)    {      style_context = gtk_widget_get_style_context (GTK_WIDGET (view));      self->terminal_bottom = g_object_new (GB_TYPE_TERMINAL,                                            "audible-bell", FALSE,                                            "scrollback-lines", G_MAXUINT,                                            "expand", TRUE,                                            "visible", TRUE,                                            NULL);      gtk_container_add_with_properties (GTK_CONTAINER (self->bottom_container),                                         GTK_WIDGET (self->terminal_bottom),                                         "position", 0,                                         NULL);      gtk_widget_show (self->bottom_container);      gb_terminal_view_connect_terminal (self, self->terminal_bottom);      style_context_changed (style_context, GB_TERMINAL_VIEW (view));      gtk_widget_grab_focus (GTK_WIDGET (self->terminal_bottom));      if (!self->bottom_has_spawned)        {          self->bottom_has_spawned = TRUE;          gb_terminal_respawn (self, self->terminal_bottom);        }    }  else    {      gtk_container_remove (GTK_CONTAINER (self->bottom_container),                            GTK_WIDGET (self->terminal_bottom));      gtk_widget_hide (self->bottom_container);      self->terminal_bottom = NULL;      self->bottom_has_focus = FALSE;      self->bottom_has_spawned = FALSE;      self->bottom_has_needs_attention = FALSE;      g_clear_object (&self->save_as_file_bottom);      gtk_widget_grab_focus (GTK_WIDGET (self->terminal_top));    }}

static gbooleanfocus_in_event_cb (VteTerminal    *terminal,                   GdkEvent       *event,                   GbTerminalView *self){  const gchar *title;  g_assert (VTE_IS_TERMINAL (terminal));  g_assert (GB_IS_TERMINAL_VIEW (self));  self->bottom_has_focus = (terminal != self->terminal_top);  title = gb_terminal_get_title (GB_VIEW (self));  if (self->document)    gb_terminal_document_set_title (self->document, title);  if (terminal == self->terminal_top)    {      self->top_has_needs_attention = FALSE;      gb_terminal_set_needs_attention (self, FALSE, GTK_POS_TOP);    }  else if (terminal == self->terminal_bottom)    {      self->bottom_has_needs_attention = FALSE;      gb_terminal_set_needs_attention (self, FALSE, GTK_POS_BOTTOM);    }  g_object_notify (G_OBJECT (self), "title");  return GDK_EVENT_PROPAGATE;}

static voidgb_terminal_set_needs_attention (GbTerminalView  *self,                                 gboolean         needs_attention,                                 GtkPositionType  position){  GtkWidget *parent;  g_assert (GB_IS_TERMINAL_VIEW (self));  parent = gtk_widget_get_parent (GTK_WIDGET (self));  if (GTK_IS_STACK (parent) &&      !gtk_widget_in_destruction (GTK_WIDGET (self)) &&      !gtk_widget_in_destruction (parent))    {      if (position == GTK_POS_TOP &&          !gtk_widget_in_destruction (GTK_WIDGET (self->terminal_top)))        {          self->top_has_needs_attention = TRUE;        }      else if (position == GTK_POS_BOTTOM &&               self->terminal_bottom != NULL &&               !gtk_widget_in_destruction (GTK_WIDGET (self->terminal_bottom)))        {          self->bottom_has_needs_attention = TRUE;        }      gtk_container_child_set (GTK_CONTAINER (parent), GTK_WIDGET (self),                               "needs-attention",                               !!(self->top_has_needs_attention || self->bottom_has_needs_attention) &&                               needs_attention,                               NULL);    }}

static voidstyle_context_changed (GtkStyleContext *style_context,                       GbTerminalView  *self){  GtkStateFlags state;  GdkRGBA fg;  GdkRGBA bg;  g_assert (GTK_IS_STYLE_CONTEXT (style_context));  g_assert (GB_IS_TERMINAL_VIEW (self));  state = gtk_style_context_get_state (style_context);  G_GNUC_BEGIN_IGNORE_DEPRECATIONS;  gtk_style_context_get_color (style_context, state, &fg);  gtk_style_context_get_background_color (style_context, state, &bg);  G_GNUC_END_IGNORE_DEPRECATIONS;  if (bg.alpha == 0.0)    {      gdk_rgba_parse (&bg, "#f6f7f8");    }  vte_terminal_set_colors (self->terminal_top, &fg, &bg,                           solarized_palette,                           G_N_ELEMENTS (solarized_palette));  if (self->terminal_bottom)    vte_terminal_set_colors (self->terminal_bottom, &fg, &bg,                             solarized_palette,                             G_N_ELEMENTS (solarized_palette));}

static GbDocument *gb_terminal_view_get_document (GbView *view){  g_return_val_if_fail (GB_IS_TERMINAL_VIEW (view), NULL);  return GB_DOCUMENT (GB_TERMINAL_VIEW (view)->document);}

static voidsize_allocate_cb (VteTerminal    *terminal,                  GtkAllocation  *alloc,                  GbTerminalView *self){  glong width;  glong height;  glong columns;  glong rows;  g_assert (VTE_IS_TERMINAL (terminal));  g_assert (alloc != NULL);  g_assert (GB_IS_TERMINAL_VIEW (self));  if ((alloc->width == 0) || (alloc->height == 0))    return;  width = vte_terminal_get_char_width (terminal);  height = vte_terminal_get_char_height (terminal);  if ((width == 0) || (height == 0))    return;  columns = alloc->width / width;  rows = alloc->height / height;  if ((columns < 2) || (rows < 2))    return;  vte_terminal_set_size (terminal, columns, rows);}

static voidgb_terminal_respawn (GbTerminalView *self,                     VteTerminal    *terminal){  g_autoptr(GPtrArray) args = NULL;  g_autofree gchar *workpath = NULL;  GtkWidget *toplevel;  GError *error = NULL;  IdeContext *context;  IdeVcs *vcs;  GFile *workdir;  GPid child_pid;  gint64 now;  g_assert (GB_IS_TERMINAL_VIEW (self));  vte_terminal_reset (terminal, TRUE, TRUE);  toplevel = gtk_widget_get_toplevel (GTK_WIDGET (self));  if (!IDE_IS_WORKBENCH (toplevel))    return;  /* Prevent flapping */  now = g_get_monotonic_time ();  if ((now - self->last_respawn) < (G_USEC_PER_SEC / 10))    return;  self->last_respawn = now;  context = ide_workbench_get_context (IDE_WORKBENCH (toplevel));  vcs = ide_context_get_vcs (context);  workdir = ide_vcs_get_working_directory (vcs);  workpath = g_file_get_path (workdir);  args = g_ptr_array_new_with_free_func (g_free);  g_ptr_array_add (args, vte_get_user_shell ());  g_ptr_array_add (args, NULL);  vte_terminal_spawn_sync (terminal,                           VTE_PTY_DEFAULT | VTE_PTY_NO_LASTLOG | VTE_PTY_NO_UTMP | VTE_PTY_NO_WTMP,                           workpath,                           (gchar **)args->pdata,                           NULL,                           G_SPAWN_DEFAULT,                           NULL,                           NULL,                           &child_pid,                           NULL,                           &error);  if (error != NULL)    {      g_warning ("%s", error->message);      g_clear_error (&error);      return;    }  vte_terminal_watch_child (terminal, child_pid);}

static voidwindow_title_changed_cb (VteTerminal    *terminal,                         GbTerminalView *self){  g_assert (VTE_IS_TERMINAL (terminal));  g_assert (GB_IS_TERMINAL_VIEW (self));  g_object_notify (G_OBJECT (self), "title");}

static voidgb_terminal_grab_focus (GtkWidget *widget){  GbTerminalView *self = (GbTerminalView *)widget;  g_assert (GB_IS_TERMINAL_VIEW (self));  if (self->bottom_has_focus && self->terminal_bottom)    gtk_widget_grab_focus (GTK_WIDGET (self->terminal_bottom));  else    gtk_widget_grab_focus (GTK_WIDGET (self->terminal_top));}

static IdeLayoutView *gb_terminal_create_split (IdeLayoutView *view){  IdeLayoutView *new_view;  g_assert (GB_IS_TERMINAL_VIEW (view));  new_view = g_object_new (GB_TYPE_TERMINAL_VIEW,                          "visible", TRUE,                          NULL);  return new_view;}

static voidchild_exited_cb (VteTerminal    *terminal,                 gint            exit_status,                 GbTerminalView *self){  g_assert (VTE_IS_TERMINAL (terminal));  g_assert (GB_IS_TERMINAL_VIEW (self));  if (!ide_widget_action (GTK_WIDGET (self), "view-stack", "close", NULL))    {      if (!gtk_widget_in_destruction (GTK_WIDGET (terminal)))        gb_terminal_respawn (self, terminal);    }}

static GbView *gb_terminal_create_split (GbView *view){  GbView *new_view;  g_assert (GB_IS_TERMINAL_VIEW (view));  new_view = g_object_new (GB_TYPE_TERMINAL_VIEW,                          "document", gb_terminal_view_get_document (view),                          "visible", TRUE,                          NULL);  return new_view;}

static gchar *gb_terminal_get_title (IdeLayoutView *view){  const gchar *title = NULL;  GbTerminalView *self = (GbTerminalView *)view;  g_assert (GB_IS_TERMINAL_VIEW (self));  if (self->bottom_has_focus)    title = vte_terminal_get_window_title (self->terminal_bottom);  else    title = vte_terminal_get_window_title (self->terminal_top);  return g_strdup (title);}

static const gchar *gb_terminal_get_title (GbView *view){  const gchar *title;  GbTerminalView *self = (GbTerminalView *)view;  g_assert (GB_IS_TERMINAL_VIEW (self));  if (self->bottom_has_focus)    title = vte_terminal_get_window_title (self->terminal_bottom);  else    title = vte_terminal_get_window_title (self->terminal_top);  return title;}

static voidgb_terminal_realize (GtkWidget *widget){  GbTerminalView *self = (GbTerminalView *)widget;  g_assert (GB_IS_TERMINAL_VIEW (self));  GTK_WIDGET_CLASS (gb_terminal_view_parent_class)->realize (widget);  if (!self->top_has_spawned)    {      self->top_has_spawned = TRUE;      gb_terminal_respawn (self, self->terminal_top);    }}

static voidnotification_received_cb (VteTerminal    *terminal,                          const gchar    *summary,                          const gchar    *body,                          GbTerminalView *self){  g_assert (VTE_IS_TERMINAL (terminal));  g_assert (GB_IS_TERMINAL_VIEW (self));  if (!gtk_widget_has_focus (GTK_WIDGET (terminal)))    {      if (terminal == self->terminal_top)        gb_terminal_set_needs_attention (self, TRUE, GTK_POS_TOP);      else if (terminal == self->terminal_bottom)        gb_terminal_set_needs_attention (self, TRUE, GTK_POS_BOTTOM);    }}

static voidgb_terminal_view_set_document (GbTerminalView     *view,                               GbTerminalDocument *document){  g_return_if_fail (GB_IS_TERMINAL_VIEW (view));  if (view->document != document)    {      if (view->document)        g_clear_object (&view->document);      if (document)        view->document = g_object_ref (document);      g_object_notify (G_OBJECT (view), "document");    }}

static voidgb_terminal_view_set_font_name (GbTerminalView *self,                                const gchar    *font_name){  PangoFontDescription *font_desc = NULL;  g_assert (GB_IS_TERMINAL_VIEW (self));  if (font_name != NULL)    font_desc = pango_font_description_from_string (font_name);  if (font_desc != NULL)    {      vte_terminal_set_font (self->terminal_top, font_desc);      if (self->terminal_bottom)        vte_terminal_set_font (self->terminal_bottom, font_desc);      pango_font_description_free (font_desc);    }}

static gbooleanfocus_in_event_cb (VteTerminal    *terminal,                   GdkEvent       *event,                   GbTerminalView *self){  g_assert (VTE_IS_TERMINAL (terminal));  g_assert (GB_IS_TERMINAL_VIEW (self));  self->bottom_has_focus = (terminal != self->terminal_top);  if (terminal == self->terminal_top)    {      self->top_has_needs_attention = FALSE;      gb_terminal_set_needs_attention (self, FALSE, GTK_POS_TOP);    }  else if (terminal == self->terminal_bottom)    {      self->bottom_has_needs_attention = FALSE;      gb_terminal_set_needs_attention (self, FALSE, GTK_POS_BOTTOM);    }  return GDK_EVENT_PROPAGATE;}