Merge pull request #77664 from RedworkDE/audiostream-preview-crash-4.0

[4.0] Fix crash in AudioStream preview

editor/import/audio_stream_import_settings.cpp

@@ -78,6 +78,7 @@ void AudioStreamImportSettings::_notification(int p_what) {
 void AudioStreamImportSettings::_draw_preview() {
 	Rect2 rect = _preview->get_rect();
 	Size2 rect_size = rect.size;
+	int width = rect_size.width;
 
 	Ref<AudioStreamPreview> preview = AudioStreamPreviewGenerator::get_singleton()->generate_preview(stream);
 	float preview_offset = zoom_bar->get_value();
@@ -86,7 +87,7 @@ void AudioStreamImportSettings::_draw_preview() {
 	Ref<Font> beat_font = get_theme_font(SNAME("main"), SNAME("EditorFonts"));
 	int main_size = get_theme_font_size(SNAME("main_size"), SNAME("EditorFonts"));
 	Vector<Vector2> lines;
-	lines.resize(rect_size.width * 2);
+	lines.resize(width * 2);
 	Color color_active = get_theme_color(SNAME("contrast_color_2"), SNAME("Editor"));
 	Color color_inactive = color_active;
 	color_inactive.a *= 0.5;
@@ -108,7 +109,7 @@ void AudioStreamImportSettings::_draw_preview() {
 		}
 	}
 
-	for (int i = 0; i < rect_size.width; i++) {
+	for (int i = 0; i < width; i++) {
 		float ofs = preview_offset + i * preview_len / rect_size.width;
 		float ofs_n = preview_offset + (i + 1) * preview_len / rect_size.width;
 		float max = preview->get_max(ofs, ofs_n) * 0.5 + 0.5;
@@ -140,7 +141,7 @@ void AudioStreamImportSettings::_draw_preview() {
 		int bar_beats = stream->get_bar_beats();
 
 		int last_text_end_x = 0;
-		for (int i = 0; i < rect_size.width; i++) {
+		for (int i = 0; i < width; i++) {
 			float ofs = preview_offset + i * preview_len / rect_size.width;
 			int beat = int(ofs / beat_size);
 			if (beat != prev_beat) {

editor/plugins/audio_stream_editor_plugin.cpp

@@ -76,14 +76,18 @@ void AudioStreamEditor::_notification(int p_what) {
 void AudioStreamEditor::_draw_preview() {
 	Rect2 rect = _preview->get_rect();
 	Size2 size = get_size();
+	int width = size.width;
+	if (width <= 0) {
+		return; // No points to draw.
+	}
 
 	Ref<AudioStreamPreview> preview = AudioStreamPreviewGenerator::get_singleton()->generate_preview(stream);
 	float preview_len = preview->get_length();
 
 	Vector<Vector2> lines;
-	lines.resize(size.width * 2);
+	lines.resize(width * 2);
 
-	for (int i = 0; i < size.width; i++) {
+	for (int i = 0; i < width; i++) {
 		float ofs = i * preview_len / size.width;
 		float ofs_n = (i + 1) * preview_len / size.width;
 		float max = preview->get_max(ofs, ofs_n) * 0.5 + 0.5;