cpp/openttd-patchpack/source Changeset - r24823:6a09ecd63560

Changeset - r24823:6a09ecd63560

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Jonathan G Rennison - 3 years ago 2021-02-18 11:17:51
j.g.rennison@gmail.com

Fix: Unnecessary status bar redraws when there is no news to show (#8691)

InvalidateWindowData with mode SBI_NEWS_DELETED was called on the
status bar when checking for a new item of news to be shown in the
ticker, even if there is no news queued and no change occurs.

1 file changed with 1 insertions and 2 deletions:

src/news_gui.cpp

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src/news_gui.cpp

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@@ @@ -657,26 +657,24 @@ static bool ReadyForNextNewsItem() @@
 	/* neither newsticker nor newspaper are running */
 	return (NewsWindow::duration <= 0 || FindWindowById(WC_NEWS_WINDOW, 0) == nullptr);
+}
 /** Move to the next ticker item */
 static void MoveToNextTickerItem()
+{
 	/* There is no status bar, so no reason to show news;
 	 * especially important with the end game screen when
 	 * there is no status bar but possible news. */
 	if (FindWindowById(WC_STATUS_BAR, 0) == nullptr) return;
 	InvalidateWindowData(WC_STATUS_BAR, 0, SBI_NEWS_DELETED); // invalidate the statusbar
 	/* if we're not at the last item, then move on */
 	while (_statusbar_news_item != _latest_news) {
 		_statusbar_news_item = (_statusbar_news_item == nullptr) ? _oldest_news : _statusbar_news_item->next;
 		const NewsItem *ni = _statusbar_news_item;
 		const NewsType type = ni->type;
 		/* check the date, don't show too old items */
 		if (_date - _news_type_data[type].age > ni->date) continue;
 		switch (_news_type_data[type].GetDisplay()) {
 			default: NOT_REACHED();
 			case ND_OFF: // Off - show nothing only a small reminder in the status bar
@@ @@ -757,24 +755,25 @@ static void DeleteNewsItem(NewsItem *ni) @@
 		/* About to remove the currently forced item (shown as newspapers) ||
 		 * about to remove the currently displayed item (newspapers) */
 		MoveToNextNewsItem();
+	}
 	if (_statusbar_news_item == ni) {
 		/* When we're the current news, go to the previous item first;
 		 * we just possibly made that the last news item. */
 		_statusbar_news_item = ni->prev;
 		/* About to remove the currently displayed item (ticker, or just a reminder) */
 		InvalidateWindowData(WC_STATUS_BAR, 0, SBI_NEWS_DELETED); // invalidate the statusbar
 		MoveToNextTickerItem();
+	}
 	delete ni;
 	SetWindowDirty(WC_MESSAGE_HISTORY, 0);
+}
 /**
  * Add a new newsitem to be shown.
  * @param string String to display
  * @param type news category

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