Several updates for the audio file preview feature

Author: sadko4u

res/main/i18n/default/actions.json

@@ -29,6 +29,12 @@
 	"export_settings_to_clipboard": "Export settings to clipboard",
 	"export_settings_to_file": "Export settings to file...",
 
+	"file_preview": {
+		"pause": "Pause",
+		"play": "Play",
+		"stop": "Stop"
+	},
+	
 	"font_scaling": {
 		"select": "Font scaling",
 		"value:pc": "{@value} %",

res/main/i18n/default/labels.json

@@ -218,7 +218,14 @@
 	},
 	"file_list": "File list",
 	"file_name": "File name",
-	"file_preview": "File preview",
+	"file_preview": {
+		"": "File preview",
+		"audio_channels": "Audio channels:",
+		"auto_play": "Automatic play",
+		"duration": "Duration:",
+		"sample_format": "Sample format:",
+		"sample_rate": "Sample rate:"
+	},
 	"filter": "Filter",
 	"filters": "Filters",
 

res/main/schema/modern.xml

@@ -1635,6 +1635,16 @@
 	</style>
 
 	<style class="FileDialog::FileList" parents="ListBox"></style>
+	
+	<style class="FileDialog::FilePreview::Heading" parents="Label">
+		<allocation.hfill value="true" />
+		<text.layout.halign value="-1" />
+		<font.bold value="true" />
+	</style>
+	
+	<style class="FileDialog::FilePreview::Value" parents="Label">
+		<text.layout.halign value="-1" />
+	</style>
 
 	<style class="FileDialog::FilterComboBox" parents="ComboBox">
 		<color value="bg_light"/>

res/main/ui/about.xml

@@ -1,3 +1,5 @@
+<?xml version="1.0"?>
+
 <window ui:inject="AboutDialog" title="titles.about">
 	<grid rows="2" cols="2" spacing="8" expand="true" fill="true">
 		<align halign="0" valign="-1">

res/main/ui/audio_file_preview.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0"?>
+
+<preview halign="-1" valign="-1">
+	<vbox>
+		<label ui:inject="FileDialog::FilePreview::Heading" text="labels.file_preview.audio_channels" hfill="true" />
+		<label ui:inject="FileDialog::FilePreview::Value" ui:id="audio_channels" />
+		<label ui:inject="FileDialog::FilePreview::Heading" text="labels.file_preview.sample_rate" />
+		<label ui:inject="FileDialog::FilePreview::Value" ui:id="sample_rate" />
+		<label ui:inject="FileDialog::FilePreview::Heading" text="labels.file_preview.sample_format" />
+		<label ui:inject="FileDialog::FilePreview::Value" ui:id="sample_format" />
+		<label ui:inject="FileDialog::FilePreview::Heading" text="labels.file_preview.duration" />
+		<label ui:inject="FileDialog::FilePreview::Value" ui:id="duration" />
+		
+		<grid rows="3" cols="2">
+			<cell cols="2">
+				<fader ui:id="play_position" />
+			</cell>
+			<button ui:id="play_pause" text="actions.file_preview.play" />
+			<button ui:id="stop" text="actions.file_preview.stop" />
+			<cell cols="2">
+				<hbox>
+					<check ui:id="auto_play" id="_ui_preview_auto_play" />
+					<label text="labels.file_preview.auto_play" />
+				</hbox>
+			</cell>
+		</grid>
+	</vbox>
+</preview>