Display /me differently

fixes #12
This commit is contained in:
fiaxh 2017-03-15 21:37:49 +01:00
parent 7ab4752b24
commit f277db6cb4
11 changed files with 333 additions and 248 deletions

View File

@ -80,8 +80,11 @@ SOURCES
src/ui/conversation_selector/groupchat_row.vala
src/ui/conversation_selector/list.vala
src/ui/conversation_selector/view.vala
src/ui/conversation_summary/conversation_item.vala
src/ui/conversation_summary/merged_message_item.vala
src/ui/conversation_summary/merged_status_item.vala
src/ui/conversation_summary/message_item.vala
src/ui/conversation_summary/message_textview.vala
src/ui/conversation_summary/slashme_item.vala
src/ui/conversation_summary/status_item.vala
src/ui/conversation_summary/view.vala
src/ui/conversation_titlebar.vala

View File

@ -1,6 +1,6 @@
<?xml version="1.0" encoding="UTF-8"?>
<interface>
<template class="DinoUiConversationSummaryMergedMessageItem">
<template class="DinoUiConversationSummaryMessageItem">
<property name="hexpand">True</property>
<property name="column-spacing">7</property>
<property name="orientation">horizontal</property>
@ -21,23 +21,10 @@
<property name="height">2</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="name_label">
<property name="xalign">0</property>
<property name="visible">True</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">0</property>
<property name="width">1</property>
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkLabel" id="time_label">
<property name="visible">True</property>
<property name="xalign">1</property>
<property name="yalign">0</property>
<style>
<class name="dim-label"/>
</style>
@ -79,19 +66,5 @@
<property name="height">1</property>
</packing>
</child>
<child>
<object class="GtkTextView" id="message_text_view">
<property name="editable">False</property>
<property name="hexpand">True</property>
<property name="wrap-mode">GTK_WRAP_WORD_CHAR</property>
<property name="visible">True</property>
</object>
<packing>
<property name="left_attach">1</property>
<property name="top_attach">1</property>
<property name="width">2</property>
<property name="height">1</property>
</packing>
</child>
</template>
</interface>

View File

@ -0,0 +1,34 @@
using Dino.Entities;
namespace Dino.Ui.ConversationSummary {
public enum MessageKind {
TEXT,
ME_COMMAND
}
public MessageKind get_message_kind(Message message) {
if (message.body.has_prefix("/me ")) {
return MessageKind.ME_COMMAND;
} else {
return MessageKind.TEXT;
}
}
public interface ConversationItem : Gtk.Widget {
public abstract bool merge(Entities.Message message);
public static ConversationItem create_for_message(StreamInteractor stream_interactor, Conversation conversation, Message message) {
switch (get_message_kind(message)) {
case MessageKind.TEXT:
return new MergedMessageItem(stream_interactor, conversation, message);
break;
case MessageKind.ME_COMMAND:
return new SlashMeItem(stream_interactor, conversation, message);
break;
}
return null;
}
}
}

View File

@ -7,176 +7,46 @@ using Dino.Entities;
namespace Dino.Ui.ConversationSummary {
[GtkTemplate (ui = "/org/dino-im/conversation_summary/message_item.ui")]
public class MergedMessageItem : Grid {
public class MergedMessageItem : MessageItem {
public Conversation conversation { get; set; }
public Jid from { get; private set; }
public DateTime initial_time { get; private set; }
public ArrayList<Message> messages = new ArrayList<Message>(Message.equals_func);
[GtkChild] private Image image;
[GtkChild] private Label time_label;
[GtkChild] private Label name_label;
[GtkChild] private Image encryption_image;
[GtkChild] private Image received_image;
[GtkChild] private TextView message_text_view;
private StreamInteractor stream_interactor;
private TextTag link_tag;
private Label name_label = new Label("") { xalign=0, visible=true };
private MessageTextView textview = new MessageTextView() { visible=true };
public MergedMessageItem(StreamInteractor stream_interactor, Conversation conversation, Message message) {
this.conversation = conversation;
this.from = message.from;
this.initial_time = message.time;
this.stream_interactor = stream_interactor;
setup_tags();
base(stream_interactor, conversation, message);
set_main_widget(textview);
set_title_widget(name_label);
add_message(message);
string display_name = Util.get_message_display_name(stream_interactor, message, conversation.account);
name_label.set_markup(@"<span foreground=\"#$(Util.get_name_hex_color(display_name, false))\">$display_name</span>");
time_label.label = get_relative_time(initial_time.to_local());
Util.image_set_from_scaled_pixbuf(image, (new AvatarGenerator(30, 30, image.scale_factor)).draw_message(stream_interactor, message));
if (message.encryption != Encryption.NONE) {
encryption_image.visible = true;
encryption_image.set_from_icon_name("changes-prevent-symbolic", IconSize.SMALL_TOOLBAR);
}
name_label.label = Util.get_message_display_name(stream_interactor, message, conversation.account);
textview.style_updated.connect(update_display_style);
update_display_style();
Util.force_base_background(message_text_view, "textview, text:not(:selected)");
message_text_view.style_updated.connect(update_display_style);
}
public override void add_message(Message message) {
base.add_message(message);
if (messages.size > 1) textview.add_text("\n");
textview.add_text(message.body);
}
public override bool merge(Message message) {
if (get_message_kind(message) == MessageKind.TEXT &&
this.from.equals(message.from) &&
this.messages[0].encryption == message.encryption &&
message.time.difference(initial_time) < TimeSpan.MINUTE &&
this.messages[0].marked != Entities.Message.Marked.WONTSEND) {
add_message(message);
return true;
}
return false;
}
private void update_display_style() {
RGBA bg = message_text_view.get_style_context().get_background_color(StateFlags.NORMAL);
bool dark_theme = (bg.red < 0.5 && bg.green < 0.5 && bg.blue < 0.5);
string display_name = Util.get_message_display_name(stream_interactor, messages[0], conversation.account);
name_label.set_markup(@"<span foreground=\"#$(Util.get_name_hex_color(display_name, dark_theme))\">$display_name</span>");
LinkButton lnk = new LinkButton("http://example.com");
RGBA link_color = lnk.get_style_context().get_color(StateFlags.LINK);
link_tag.foreground_rgba = link_color;
}
public void update() {
time_label.label = get_relative_time(initial_time.to_local());
}
public void add_message(Message message) {
TextIter end;
message_text_view.buffer.get_end_iter(out end);
if (messages.size > 0) {
message_text_view.buffer.insert(ref end, "\n", -1);
}
message_text_view.buffer.insert(ref end, message.body, -1);
format_suffix_urls(message.body);
messages.add(message);
message.notify["marked"].connect_after(() => {
Idle.add(() => { update_received(); return false; });
});
update_received();
}
private void update_received() {
bool all_received = true;
bool all_read = true;
foreach (Message message in messages) {
if (message.marked == Message.Marked.WONTSEND) {
received_image.visible = true;
received_image.set_from_icon_name("dialog-warning-symbolic", IconSize.SMALL_TOOLBAR);
Util.force_error_color(received_image);
Util.force_error_color(encryption_image);
Util.force_error_color(time_label);
return;
} else if (message.marked != Message.Marked.READ) {
all_read = false;
if (message.marked != Message.Marked.RECEIVED) {
all_received = false;
}
}
}
if (all_read) {
received_image.visible = true;
received_image.set_from_icon_name("dino-double-tick-symbolic", IconSize.SMALL_TOOLBAR);
} else if (all_received) {
received_image.visible = true;
received_image.set_from_icon_name("dino-tick-symbolic", IconSize.SMALL_TOOLBAR);
} else if (received_image.visible) {
received_image.set_from_icon_name("image-loading-symbolic", IconSize.SMALL_TOOLBAR);
}
}
private void format_suffix_urls(string text) {
int absolute_start = message_text_view.buffer.text.length - text.length;
Regex url_regex = new Regex("""(?i)\b((?:[a-z][\w-]+:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»]))""");
MatchInfo match_info;
url_regex.match(text, 0, out match_info);
for (; match_info.matches(); match_info.next()) {
string? url = match_info.fetch(0);
int start;
int end;
match_info.fetch_pos(0, out start, out end);
start = text[0:start].char_count();
end = text[0:end].char_count();
TextIter start_iter;
TextIter end_iter;
message_text_view.buffer.get_iter_at_offset(out start_iter, absolute_start + start);
message_text_view.buffer.get_iter_at_offset(out end_iter, absolute_start + end);
message_text_view.buffer.apply_tag_by_name("url", start_iter, end_iter);
}
}
private void setup_tags() {
link_tag = message_text_view.buffer.create_tag("url", underline: Pango.Underline.SINGLE, foreground: "blue");
message_text_view.button_release_event.connect(open_url);
message_text_view.motion_notify_event.connect(change_cursor_over_url);
}
private bool open_url(EventButton event_button) {
int buffer_x, buffer_y;
message_text_view.window_to_buffer_coords(TextWindowType.TEXT, (int) event_button.x, (int) event_button.y, out buffer_x, out buffer_y);
TextIter iter;
message_text_view.get_iter_at_location(out iter, buffer_x, buffer_y);
TextIter start_iter = iter, end_iter = iter;
if (start_iter.backward_to_tag_toggle(null) && end_iter.forward_to_tag_toggle(null)) {
string url = start_iter.get_text(end_iter);
try{
AppInfo.launch_default_for_uri(url, null);
} catch (Error err) {
print("Tryed to open " + url);
}
}
return false;
}
private bool change_cursor_over_url(EventMotion event_motion) {
TextIter iter;
message_text_view.get_iter_at_location(out iter, (int) event_motion.x, (int) event_motion.y);
if (iter.has_tag(message_text_view.buffer.tag_table.lookup("url"))) {
event_motion.window.set_cursor(new Cursor.for_display(get_display(), CursorType.HAND2));
} else {
event_motion.window.set_cursor(new Cursor.for_display(get_display(), CursorType.XTERM));
}
return false;
}
private static string get_relative_time(DateTime datetime) {
DateTime now = new DateTime.now_local();
TimeSpan timespan = now.difference(datetime);
if (timespan > 365 * TimeSpan.DAY) {
return datetime.format("%d.%m.%Y %H:%M");
} else if (timespan > 7 * TimeSpan.DAY) {
return datetime.format("%d.%m %H:%M");
} else if (timespan > 1 * TimeSpan.DAY) {
return datetime.format("%a, %H:%M");
} else if (timespan > 9 * TimeSpan.MINUTE) {
return datetime.format("%H:%M");
} else if (timespan > TimeSpan.MINUTE) {
return (timespan / TimeSpan.MINUTE).to_string() + " min ago";
} else {
return "Just now";
}
name_label.set_markup(@"<span foreground=\"#$(Util.get_name_hex_color(display_name, Util.is_dark_theme(textview)))\">$display_name</span>");
}
}

View File

@ -1,31 +0,0 @@
using Gee;
using Gtk;
using Dino.Entities;
namespace Dino.Ui.ConversationSummary {
private class MergedStatusItem : Expander {
private StreamInteractor stream_interactor;
private Conversation conversation;
private ArrayList<Show> statuses = new ArrayList<Show>();
public MergedStatusItem(StreamInteractor stream_interactor, Conversation conversation, Show show) {
set_hexpand(true);
add_status(show);
}
public void add_status(Show show) {
statuses.add(show);
StatusItem status_item = new StatusItem(stream_interactor, conversation, @"is $(show.as)");
if (statuses.size == 1) {
label = show.as;
} else {
label = @"changed their status $(statuses.size) times";
add(new Label(show.as));
}
}
}
}

View File

@ -0,0 +1,112 @@
using Gee;
using Gdk;
using Gtk;
using Markup;
using Dino.Entities;
namespace Dino.Ui.ConversationSummary {
[GtkTemplate (ui = "/org/dino-im/conversation_summary/message_item.ui")]
public class MessageItem : Grid, ConversationItem {
[GtkChild] private Image image;
[GtkChild] private Label time_label;
[GtkChild] private Image encryption_image;
[GtkChild] private Image received_image;
public StreamInteractor stream_interactor;
public Conversation conversation { get; set; }
public Jid from { get; private set; }
public DateTime initial_time { get; private set; }
public ArrayList<Message> messages = new ArrayList<Message>(Message.equals_func);
public MessageItem(StreamInteractor stream_interactor, Conversation conversation, Message message) {
this.conversation = conversation;
this.stream_interactor = stream_interactor;
this.initial_time = message.time;
this.from = message.from;
if (message.encryption != Encryption.NONE) {
encryption_image.visible = true;
encryption_image.set_from_icon_name("changes-prevent-symbolic", IconSize.SMALL_TOOLBAR);
}
time_label.label = get_relative_time(initial_time.to_local());
Util.image_set_from_scaled_pixbuf(image, (new AvatarGenerator(30, 30, image.scale_factor)).draw_message(stream_interactor, message));
}
public void set_title_widget(Widget w) {
attach(w, 1, 0, 1, 1);
}
public void set_main_widget(Widget w) {
attach(w, 1, 1, 2, 1);
}
public void update() {
time_label.label = get_relative_time(initial_time.to_local());
}
public virtual void add_message(Message message) {
messages.add(message);
message.notify["marked"].connect_after(() => {
Idle.add(() => { update_received(); return false; });
});
update_received();
}
public virtual bool merge(Message message) {
return false;
}
private void update_received() {
bool all_received = true;
bool all_read = true;
foreach (Message message in messages) {
if (message.marked == Message.Marked.WONTSEND) {
received_image.visible = true;
received_image.set_from_icon_name("dialog-warning-symbolic", IconSize.SMALL_TOOLBAR);
Util.force_error_color(received_image);
Util.force_error_color(encryption_image);
Util.force_error_color(time_label);
return;
} else if (message.marked != Message.Marked.READ) {
all_read = false;
if (message.marked != Message.Marked.RECEIVED) {
all_received = false;
}
}
}
if (all_read) {
received_image.visible = true;
received_image.set_from_icon_name("dino-double-tick-symbolic", IconSize.SMALL_TOOLBAR);
} else if (all_received) {
received_image.visible = true;
received_image.set_from_icon_name("dino-tick-symbolic", IconSize.SMALL_TOOLBAR);
} else if (received_image.visible) {
received_image.set_from_icon_name("image-loading-symbolic", IconSize.SMALL_TOOLBAR);
}
}
private static string get_relative_time(DateTime datetime) {
DateTime now = new DateTime.now_local();
TimeSpan timespan = now.difference(datetime);
if (timespan > 365 * TimeSpan.DAY) {
return datetime.format("%d.%m.%Y %H:%M");
} else if (timespan > 7 * TimeSpan.DAY) {
return datetime.format("%d.%m %H:%M");
} else if (timespan > 1 * TimeSpan.DAY) {
return datetime.format("%a, %H:%M");
} else if (timespan > 9 * TimeSpan.MINUTE) {
return datetime.format("%H:%M");
} else if (timespan > TimeSpan.MINUTE) {
return (timespan / TimeSpan.MINUTE).to_string() + " min ago";
} else {
return "Just now";
}
}
}
}

View File

@ -0,0 +1,87 @@
using Gdk;
using Gtk;
using Dino.Entities;
namespace Dino.Ui.ConversationSummary {
public class MessageTextView : TextView {
private TextTag link_tag;
public MessageTextView() {
Object(editable:false, hexpand:true, wrap_mode:WrapMode.WORD_CHAR);
link_tag = buffer.create_tag("url", underline: Pango.Underline.SINGLE, foreground: "blue");
button_release_event.connect(open_url);
motion_notify_event.connect(change_cursor_over_url);
update_display_style();
Util.force_base_background(this, "textview, text:not(:selected)");
style_updated.connect(update_display_style);
}
public void add_text(string text) {
TextIter end;
buffer.get_end_iter(out end);
buffer.insert(ref end, text, -1);
format_suffix_urls(text);
}
private void update_display_style() {
LinkButton lnk = new LinkButton("http://example.com");
RGBA link_color = lnk.get_style_context().get_color(StateFlags.LINK);
link_tag.foreground_rgba = link_color;
}
private void format_suffix_urls(string text) {
int absolute_start = buffer.text.length - text.length;
Regex url_regex = new Regex("""(?i)\b((?:[a-z][\w-]+:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:'".,<>?«»]))""");
MatchInfo match_info;
url_regex.match(text, 0, out match_info);
for (; match_info.matches(); match_info.next()) {
string? url = match_info.fetch(0);
int start;
int end;
match_info.fetch_pos(0, out start, out end);
start = text[0:start].char_count();
end = text[0:end].char_count();
TextIter start_iter;
TextIter end_iter;
buffer.get_iter_at_offset(out start_iter, absolute_start + start);
buffer.get_iter_at_offset(out end_iter, absolute_start + end);
buffer.apply_tag_by_name("url", start_iter, end_iter);
}
}
private bool open_url(EventButton event_button) {
int buffer_x, buffer_y;
window_to_buffer_coords(TextWindowType.TEXT, (int) event_button.x, (int) event_button.y, out buffer_x, out buffer_y);
TextIter iter;
get_iter_at_location(out iter, buffer_x, buffer_y);
TextIter start_iter = iter, end_iter = iter;
if (start_iter.backward_to_tag_toggle(null) && end_iter.forward_to_tag_toggle(null)) {
string url = start_iter.get_text(end_iter);
try{
AppInfo.launch_default_for_uri(url, null);
} catch (Error err) {
print("Tryed to open " + url);
}
}
return false;
}
private bool change_cursor_over_url(EventMotion event_motion) {
TextIter iter;
get_iter_at_location(out iter, (int) event_motion.x, (int) event_motion.y);
if (iter.has_tag(buffer.tag_table.lookup("url"))) {
event_motion.window.set_cursor(new Cursor.for_display(get_display(), CursorType.HAND2));
} else {
event_motion.window.set_cursor(new Cursor.for_display(get_display(), CursorType.XTERM));
}
return false;
}
}
}

View File

@ -0,0 +1,43 @@
using Gdk;
using Gtk;
using Dino.Entities;
namespace Dino.Ui.ConversationSummary {
public class SlashMeItem : MessageItem {
private Box box = new Box(Orientation.VERTICAL, 0) { visible=true, vexpand=true };
private MessageTextView textview = new MessageTextView() { visible=true };
private string text;
private TextTag nick_tag;
public SlashMeItem(StreamInteractor stream_interactor, Conversation conversation, Message message) {
base(stream_interactor, conversation, message);
box.set_center_widget(textview);
set_title_widget(box);
text = message.body.substring(3);
string display_name = Util.get_message_display_name(stream_interactor, message, conversation.account);
nick_tag = textview.buffer.create_tag("nick", foreground: @"#$(Util.get_name_hex_color(display_name, false))");
TextIter iter;
textview.buffer.get_start_iter(out iter);
textview.buffer.insert_with_tags(ref iter, display_name, display_name.length, nick_tag);
textview.add_text(text);
add_message(message);
textview.style_updated.connect(update_display_style);
update_display_style();
}
public override bool merge(Message message) {
return false;
}
private void update_display_style() {
string display_name = Util.get_message_display_name(stream_interactor, messages[0], conversation.account);
nick_tag.foreground = @"#$(Util.get_name_hex_color(display_name, Util.is_dark_theme(textview)))";
}
}
}

View File

@ -22,7 +22,7 @@ private class StatusItem : Grid {
attach(image, 0, 0, 1, 1);
attach(label, 1, 0, 1, 1);
string display_name = Util.get_display_name(stream_interactor, conversation.counterpart, conversation.account);
label.set_markup(@"<span foreground=\"#B1B1B1\"> $(escape_text(display_name)) $text </span>");
label.set_markup(@"<span foreground=\"#B1B1B1\">$(escape_text(display_name)) $text</span>");
show_all();
}
}

View File

@ -11,13 +11,13 @@ namespace Dino.Ui.ConversationSummary {
public class View : Box {
public Conversation? conversation { get; private set; }
public HashMap<Entities.Message, MergedMessageItem> message_items = new HashMap<Entities.Message, MergedMessageItem>(Entities.Message.hash_func, Entities.Message.equals_func);
public HashMap<Entities.Message, ConversationItem> conversation_items = new HashMap<Entities.Message, ConversationItem>(Entities.Message.hash_func, Entities.Message.equals_func);
[GtkChild] private ScrolledWindow scrolled;
[GtkChild] private Box main;
private StreamInteractor stream_interactor;
private MergedMessageItem? last_message_item;
private ConversationItem? last_conversation_item;
private StatusItem typing_status;
private Entities.Message? earliest_message;
double? was_value;
@ -44,8 +44,9 @@ public class View : Box {
Idle.add(() => { on_show_received(show, jid, account); return false; });
});
Timeout.add_seconds(60, () => {
foreach (MergedMessageItem message_item in message_items.values) {
message_item.update();
foreach (ConversationItem conversation_item in conversation_items.values) {
MessageItem message_item = conversation_item as MessageItem;
if (message_item != null) message_item.update();
}
return true;
});
@ -56,10 +57,10 @@ public class View : Box {
public void initialize_for_conversation(Conversation? conversation) {
this.conversation = conversation;
clear();
message_items.clear();
conversation_items.clear();
was_upper = null;
was_page_size = null;
last_message_item = null;
last_conversation_item = null;
ArrayList<Object> objects = new ArrayList<Object>();
Gee.List<Entities.Message>? messages = MessageManager.get_instance(stream_interactor).get_messages(conversation);
@ -158,13 +159,11 @@ public class View : Box {
MergedMessageItem? current_item = null;
int items_added = 0;
for (int i = 0; i < messages.size; i++) {
if (current_item != null && should_merge_message(current_item, messages[i])) {
current_item.add_message(messages[i]);
} else {
if (current_item == null || !current_item.merge(messages[i])) {
current_item = new MergedMessageItem(stream_interactor, conversation, messages[i]);
force_alloc_width(current_item, main.get_allocated_width());
main.add(current_item);
message_items[messages[i]] = current_item;
conversation_items[messages[i]] = current_item;
main.reorder_child(current_item, items_added);
items_added++;
}
@ -176,35 +175,25 @@ public class View : Box {
private void show_message(Entities.Message message, Conversation conversation, bool animate = false) {
if (this.conversation != null && this.conversation.equals(conversation)) {
if (should_merge_message(last_message_item, message)) {
last_message_item.add_message(message);
} else {
MergedMessageItem message_item = new MergedMessageItem(stream_interactor, conversation, message);
if (last_conversation_item == null || !last_conversation_item.merge(message)) {
ConversationItem conversation_item = ConversationItem.create_for_message(stream_interactor, conversation, message);
if (animate) {
Revealer revealer = new Revealer() {transition_duration = 200, transition_type = RevealerTransitionType.SLIDE_UP, visible = true};
revealer.add(message_item);
revealer.add(conversation_item);
force_alloc_width(revealer, main.get_allocated_width());
main.add(revealer);
revealer.set_reveal_child(true);
} else {
force_alloc_width(message_item, main.get_allocated_width());
main.add(message_item);
force_alloc_width(conversation_item, main.get_allocated_width());
main.add(conversation_item);
}
last_message_item = message_item;
last_conversation_item = conversation_item;
}
message_items[message] = last_message_item;
conversation_items[message] = last_conversation_item;
update_chat_state();
}
}
private bool should_merge_message(MergedMessageItem? message_item, Entities.Message message) {
return message_item != null &&
message_item.from.equals(message.from) &&
message_item.messages.get(0).encryption == message.encryption &&
message.time.difference(message_item.initial_time) < TimeSpan.MINUTE &&
(message_item.messages.get(0).marked == Entities.Message.Marked.WONTSEND) == (message.marked == Entities.Message.Marked.WONTSEND);
}
private void force_alloc_width(Widget widget, int width) {
Allocation alloc = Allocation();
widget.get_preferred_width(out alloc.width, null);

View File

@ -105,6 +105,11 @@ public class Util : Object {
public static void force_error_color(Gtk.Widget widget, string selector = "*") {
force_color(widget, "@error_color", selector);
}
public static bool is_dark_theme(Gtk.Widget widget) {
Gdk.RGBA bg = widget.get_style_context().get_background_color(StateFlags.NORMAL);
return (bg.red < 0.5 && bg.green < 0.5 && bg.blue < 0.5);
}
}
}