修复上游 issues 第二批：TypesettingTools#173 arch1t3cht#45 arch1t3cht#118 arch1t3cht#28

- 修复TypesettingTools#173: \fn0字体重置，在libass/VSFilter中等同于\fn，重置为样式默认字体
- 修复TypesettingTools#45: 分辨率设置UB，'设为视频分辨率'不再调用ResampleResolution
- 修复TypesettingTools#118: SRT时间精度，厘秒转换从四舍五入改为截断，匹配VSFilter/libass
- 修复TypesettingTools#28: 字体收集器性能，PrintUsage行号批量拼接输出

Author: mojie126

libaegisub/ass/time.cpp

@@ -24,8 +24,8 @@
 #include <algorithm>
 
 // classic VSFilter internally uses a signed 32-bit int to denote milliseconds.
-// To avoid this limit to < 596h (-6 to avoid rounding up to 596h in centisecond precision)
-static const int MAX_TIME = 596 * 60 * 60 * 1000 - 6;
+// 限制在 596 小时以内
+static const int MAX_TIME = 596 * 60 * 60 * 1000;
 
 static void decompose_time(int ms_time, int& h, int& m, int& s, int& ms) {
 	h = ms_time / 3600000;

libaegisub/include/libaegisub/ass/time.h

@@ -28,9 +28,8 @@ class Time {
 	Time(int ms = 0);
 	Time(std::string_view text);
 
-	/// Get millisecond, rounded to centisecond precision
-	// Always round up for 5ms because the range is [start, stop)
-	operator int() const { return (time + 5) - (time + 5) % 10; }
+	/// 获取截断至厘秒精度的毫秒值，与 VSFilter/libass 行为一致
+	operator int() const { return time - time % 10; }
 
 	/// Return the time as a string
 	/// @param ms Use milliseconds precision, for non-ASS formats

src/dialog_video_properties.cpp

@@ -158,6 +158,13 @@ bool update_video_properties(AssFile *file, const AsyncVideoProvider *new_provid
 		if (res == FIX_IGNORE) return commit_subs;
 		OPT_SET("Video/Last Script Resolution Mismatch Choice")->SetInt(res);
 
+		// "设置为视频分辨率"仅更新脚本属性，不执行 resample
+		if (res == FIX_SET) {
+			file->SetScriptInfo("PlayResX", std::to_string(vx));
+			file->SetScriptInfo("PlayResY", std::to_string(vy));
+			return true;
+		}
+
 		ResampleResolution(file, {
 			{0, 0, 0, 0},
 			sx, sy, vx, vy,

src/font_file_lister.cpp

@@ -91,7 +91,9 @@ void FontCollector::ProcessDialogueLine(const AssDialogue *line, int index) {
 					overriden = true;
 				}
 				else if (tag.Name == "\\fn") {
-					style.facename = tag.Params[0].Get(initial.facename);
+					auto name = tag.Params[0].Get(initial.facename);
+					// \fn0 在 libass/VSFilter 中等同于 \fn，重置为样式默认字体
+					style.facename = (name == "0") ? initial.facename : name;
 					overriden = true;
 				}
 			}
@@ -196,10 +198,12 @@ void FontCollector::PrintUsage(UsageData const& data) {
 	}
 
 	if (data.lines.size()) {
-		status_callback(_("Used on lines:"), 2);
+		// 批量拼接行号，避免逐行号调用 status_callback 导致 GUI 事件风暴
+		wxString lines_str = _("Used on lines:");
 		for (int line : data.lines)
-			status_callback(fmt_wx(" %d", line), 2);
-		status_callback("\n", 2);
+			lines_str += fmt_wx(" %d", line);
+		lines_str += "\n";
+		status_callback(lines_str, 2);
 	}
 	status_callback("\n", 2);
 }

tests/tests/time.cpp

@@ -23,11 +23,19 @@ using agi::Time;
 
 TEST(lagi_time, out_of_range_times) {
 	EXPECT_EQ(0, (int)Time(-1));
-	EXPECT_EQ(596 * 60 * 60 * 1000 - 10, (int)Time(596 * 60 * 60 * 1000));
+	EXPECT_EQ(596 * 60 * 60 * 1000, (int)Time(596 * 60 * 60 * 1000));
 }
 
-TEST(lagi_time, rounds_to_cs) {
+TEST(lagi_time, truncates_to_cs) {
 	EXPECT_EQ(10, (int)Time(14));
+	EXPECT_EQ(10, (int)Time(15));
+	EXPECT_EQ(10, (int)Time(19));
+	EXPECT_EQ(0, (int)Time(5));
+}
+
+TEST(lagi_time, srt_to_ass_truncates) {
+	EXPECT_STREQ("0:00:49.46", Time("0:00:49,466").GetAssFormatted().c_str());
+	EXPECT_STREQ("1:23:45.67", Time("1:23:45,678").GetAssFormatted().c_str());
 }
 
 TEST(lagi_time, cs_formatting) {