Fix issue with spacebar pausing in chromium, allow exit fullscreen with f hotkey

svelte/src/file_viewer/viewers/FilePreview.svelte

@@ -32,8 +32,6 @@ export const set_file = async file => {
 		file.availability === "ip_download_limited_captcha_required"
 	) {
 		viewer_type = "rate_limit"
-	} else if (!premium_download && $stats.limits.transfer_limit_used > $stats.limits.transfer_limit) {
-		viewer_type = "slow_down"
 	} else {
 		viewer_type = file_type(file)
 	}
@@ -67,7 +65,7 @@ export const seek = delta => {
 	</div>
 {:else if viewer_type === "abuse"}
 	<Abuse bind:this={viewer} on:download></Abuse>
-{:else if viewer_type === "slow_down"}
+{:else if !premium_download && $stats.limits.transfer_limit_used > $stats.limits.transfer_limit}
 	<SlowDown
 		on:download
 		file_size={current_file.size}

svelte/src/file_viewer/viewers/Video.svelte

@@ -83,7 +83,11 @@ const mute = () => {
 }
 
 const fullscreen = () => {
+	if (document.fullscreenElement === null) {
 		player.requestFullscreen()
+	} else {
+		document.exitFullscreen()
+	}
 }
 
 const keypress = e => {
@@ -104,6 +108,14 @@ const keypress = e => {
 		fullscreen()
 	}
 }
+const video_keydown = e => {
+	if (e.key === " ") {
+		// Prevent spacebar from pausing playback in Chromium. This conflicts
+		// with our own global key handler, causing the video to immediately
+		// pause again after unpausing.
+		e.stopPropagation()
+	}
+}
 </script>
 
 <svelte:window on:keypress={keypress} />
@@ -135,6 +147,7 @@ const keypress = e => {
 					on:pause={() => playing = false }
 					on:play={() => playing = true }
 					on:ended={() => dispatch("next", {})}
+					on:keydown={video_keydown}
 				>
 					<source src={file.get_href} type={file.mime_type} />
 				</video>

svelte/src/filesystem/viewers/Video.svelte

@@ -71,8 +71,22 @@ const mute = () => {
 }
 
 const fullscreen = () => {
+	if (document.fullscreenElement === null) {
 		player.requestFullscreen()
+	} else {
+		document.exitFullscreen()
 	}
+}
+
+const video_keydown = e => {
+	if (e.key === " ") {
+		// Prevent spacebar from pausing playback in Chromium. This conflicts
+		// with our own global key handler, causing the video to immediately
+		// pause again after unpausing.
+		e.stopPropagation()
+	}
+}
+
 </script>
 
 <div class="container">
@@ -101,6 +115,7 @@ const fullscreen = () => {
 					on:pause={() => playing = false }
 					on:play={() => playing = true }
 					on:ended={() => dispatch("open_sibling", 1)}
+					on:keydown={video_keydown}
 				>
 					<source src={fs_path_url($nav.base.path)} type={$nav.base.file_type} />
 				</video>