Merge pull request #70074 from Chaosus/restore_audio_stream_editor

Restore `AudioStreamEditor` class to fix playable sound previews

1 files changed, 279 insertions, 0 deletions

diff --git a/editor/plugins/audio_stream_editor_plugin.cpp b/editor/plugins/audio_stream_editor_plugin.cpp
new file mode 100644
index 0000000000..719ae09f47
--- /dev/null
+++ b/editor/plugins/audio_stream_editor_plugin.cpp
@@ -0,0 +1,279 @@
+/*************************************************************************/
+/*  audio_stream_editor_plugin.cpp                                       */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "audio_stream_editor_plugin.h"
+
+#include "core/core_string_names.h"
+#include "editor/audio_stream_preview.h"
+#include "editor/editor_scale.h"
+#include "editor/editor_settings.h"
+
+// AudioStreamEditor
+
+void AudioStreamEditor::_notification(int p_what) {
+	switch (p_what) {
+		case NOTIFICATION_READY: {
+			AudioStreamPreviewGenerator::get_singleton()->connect(SNAME("preview_updated"), callable_mp(this, &AudioStreamEditor::_preview_changed));
+		} break;
+		case NOTIFICATION_THEME_CHANGED:
+		case NOTIFICATION_ENTER_TREE: {
+			Ref<Font> font = get_theme_font(SNAME("status_source"), SNAME("EditorFonts"));
+
+			_current_label->add_theme_font_override(SNAME("font"), font);
+			_duration_label->add_theme_font_override(SNAME("font"), font);
+
+			_play_button->set_icon(get_theme_icon(SNAME("MainPlay"), SNAME("EditorIcons")));
+			_stop_button->set_icon(get_theme_icon(SNAME("Stop"), SNAME("EditorIcons")));
+			_preview->set_color(get_theme_color(SNAME("dark_color_2"), SNAME("Editor")));
+
+			set_color(get_theme_color(SNAME("dark_color_1"), SNAME("Editor")));
+
+			_indicator->queue_redraw();
+			_preview->queue_redraw();
+		} break;
+		case NOTIFICATION_PROCESS: {
+			_current = _player->get_playback_position();
+			_indicator->queue_redraw();
+		} break;
+		case NOTIFICATION_VISIBILITY_CHANGED: {
+			if (!is_visible_in_tree()) {
+				_stop();
+			}
+		} break;
+		default: {
+		} break;
+	}
+}
+
+void AudioStreamEditor::_draw_preview() {
+	Rect2 rect = _preview->get_rect();
+	Size2 size = get_size();
+
+	Ref<AudioStreamPreview> preview = AudioStreamPreviewGenerator::get_singleton()->generate_preview(stream);
+	float preview_len = preview->get_length();
+
+	Vector<Vector2> lines;
+	lines.resize(size.width * 2);
+
+	for (int i = 0; i < size.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;
+		float min = preview->get_min(ofs, ofs_n) * 0.5 + 0.5;
+
+		int idx = i;
+		lines.write[idx * 2 + 0] = Vector2(i + 1, rect.position.y + min * rect.size.y);
+		lines.write[idx * 2 + 1] = Vector2(i + 1, rect.position.y + max * rect.size.y);
+	}
+
+	RS::get_singleton()->canvas_item_add_multiline(_preview->get_canvas_item(), lines, { get_theme_color(SNAME("contrast_color_2"), SNAME("Editor")) });
+}
+
+void AudioStreamEditor::_preview_changed(ObjectID p_which) {
+	if (stream.is_valid() && stream->get_instance_id() == p_which) {
+		_preview->queue_redraw();
+	}
+}
+
+void AudioStreamEditor::_stream_changed() {
+	if (!is_visible()) {
+		return;
+	}
+	queue_redraw();
+}
+
+void AudioStreamEditor::_play() {
+	if (_player->is_playing()) {
+		_pausing = true;
+		_player->stop();
+		_play_button->set_icon(get_theme_icon(SNAME("MainPlay"), SNAME("EditorIcons")));
+		set_process(false);
+	} else {
+		_pausing = false;
+		_player->play(_current);
+		_play_button->set_icon(get_theme_icon(SNAME("Pause"), SNAME("EditorIcons")));
+		set_process(true);
+	}
+}
+
+void AudioStreamEditor::_stop() {
+	_player->stop();
+	_play_button->set_icon(get_theme_icon(SNAME("MainPlay"), SNAME("EditorIcons")));
+	_current = 0;
+	_indicator->queue_redraw();
+	set_process(false);
+}
+
+void AudioStreamEditor::_on_finished() {
+	_play_button->set_icon(get_theme_icon(SNAME("MainPlay"), SNAME("EditorIcons")));
+	if (!_pausing) {
+		_current = 0;
+		_indicator->queue_redraw();
+	} else {
+		_pausing = false;
+	}
+	set_process(false);
+}
+
+void AudioStreamEditor::_draw_indicator() {
+	if (stream.is_null()) {
+		return;
+	}
+
+	Rect2 rect = _preview->get_rect();
+	float len = stream->get_length();
+	float ofs_x = _current / len * rect.size.width;
+	const Color col = get_theme_color(SNAME("accent_color"), SNAME("Editor"));
+	Ref<Texture2D> icon = get_theme_icon(SNAME("TimelineIndicator"), SNAME("EditorIcons"));
+	_indicator->draw_line(Point2(ofs_x, 0), Point2(ofs_x, rect.size.height), col, Math::round(2 * EDSCALE));
+	_indicator->draw_texture(
+			icon,
+			Point2(ofs_x - icon->get_width() * 0.5, 0),
+			col);
+
+	_current_label->set_text(String::num(_current, 2).pad_decimals(2) + " /");
+}
+
+void AudioStreamEditor::_on_input_indicator(Ref<InputEvent> p_event) {
+	const Ref<InputEventMouseButton> mb = p_event;
+	if (mb.is_valid() && mb->get_button_index() == MouseButton::LEFT) {
+		if (mb->is_pressed()) {
+			_seek_to(mb->get_position().x);
+		}
+		_dragging = mb->is_pressed();
+	}
+
+	const Ref<InputEventMouseMotion> mm = p_event;
+	if (mm.is_valid()) {
+		if (_dragging) {
+			_seek_to(mm->get_position().x);
+		}
+	}
+}
+
+void AudioStreamEditor::_seek_to(real_t p_x) {
+	_current = p_x / _preview->get_rect().size.x * stream->get_length();
+	_current = CLAMP(_current, 0, stream->get_length());
+	_player->seek(_current);
+	_indicator->queue_redraw();
+}
+
+void AudioStreamEditor::set_stream(const Ref<AudioStream> &p_stream) {
+	if (stream.is_valid()) {
+		stream->disconnect(CoreStringNames::get_singleton()->changed, callable_mp(this, &AudioStreamEditor::_stream_changed));
+	}
+
+	stream = p_stream;
+	if (stream.is_null()) {
+		hide();
+		return;
+	}
+	stream->connect(CoreStringNames::get_singleton()->changed, callable_mp(this, &AudioStreamEditor::_stream_changed));
+
+	_player->set_stream(stream);
+	_current = 0;
+
+	String text = String::num(stream->get_length(), 2).pad_decimals(2) + "s";
+	_duration_label->set_text(text);
+
+	queue_redraw();
+}
+
+AudioStreamEditor::AudioStreamEditor() {
+	set_custom_minimum_size(Size2(1, 100) * EDSCALE);
+
+	_player = memnew(AudioStreamPlayer);
+	_player->connect(SNAME("finished"), callable_mp(this, &AudioStreamEditor::_on_finished));
+	add_child(_player);
+
+	VBoxContainer *vbox = memnew(VBoxContainer);
+	vbox->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT);
+	add_child(vbox);
+
+	_preview = memnew(ColorRect);
+	_preview->set_v_size_flags(SIZE_EXPAND_FILL);
+	_preview->connect(SNAME("draw"), callable_mp(this, &AudioStreamEditor::_draw_preview));
+	vbox->add_child(_preview);
+
+	_indicator = memnew(Control);
+	_indicator->set_anchors_and_offsets_preset(Control::PRESET_FULL_RECT);
+	_indicator->connect(SNAME("draw"), callable_mp(this, &AudioStreamEditor::_draw_indicator));
+	_indicator->connect(SNAME("gui_input"), callable_mp(this, &AudioStreamEditor::_on_input_indicator));
+	_preview->add_child(_indicator);
+
+	HBoxContainer *hbox = memnew(HBoxContainer);
+	hbox->add_theme_constant_override("separation", 0);
+	vbox->add_child(hbox);
+
+	_play_button = memnew(Button);
+	hbox->add_child(_play_button);
+	_play_button->set_flat(true);
+	_play_button->set_focus_mode(Control::FOCUS_NONE);
+	_play_button->connect(SNAME("pressed"), callable_mp(this, &AudioStreamEditor::_play));
+	_play_button->set_shortcut(ED_SHORTCUT("audio_stream_editor/audio_preview_play_pause", TTR("Audio Preview Play/Pause"), Key::SPACE));
+
+	_stop_button = memnew(Button);
+	hbox->add_child(_stop_button);
+	_stop_button->set_flat(true);
+	_stop_button->set_focus_mode(Control::FOCUS_NONE);
+	_stop_button->connect(SNAME("pressed"), callable_mp(this, &AudioStreamEditor::_stop));
+
+	_current_label = memnew(Label);
+	_current_label->set_horizontal_alignment(HORIZONTAL_ALIGNMENT_RIGHT);
+	_current_label->set_h_size_flags(Control::SIZE_EXPAND_FILL);
+	_current_label->set_modulate(Color(1, 1, 1, 0.5));
+	hbox->add_child(_current_label);
+
+	_duration_label = memnew(Label);
+	hbox->add_child(_duration_label);
+}
+
+// EditorInspectorPluginAudioStream
+
+bool EditorInspectorPluginAudioStream::can_handle(Object *p_object) {
+	return Object::cast_to<AudioStream>(p_object) != nullptr;
+}
+
+void EditorInspectorPluginAudioStream::parse_begin(Object *p_object) {
+	AudioStream *stream = Object::cast_to<AudioStream>(p_object);
+
+	editor = memnew(AudioStreamEditor);
+	editor->set_stream(Ref<AudioStream>(stream));
+
+	add_custom_control(editor);
+}
+
+// AudioStreamEditorPlugin
+
+AudioStreamEditorPlugin::AudioStreamEditorPlugin() {
+	Ref<EditorInspectorPluginAudioStream> plugin;
+	plugin.instantiate();
+	add_inspector_plugin(plugin);
+}