Thrimbletrimmer: Add JS cropping tool to advanced template options

4 weeks ago · 1c5d37cc04
parent b866b5d21c
commit 1c5d37cc04
3 changed files with 160 additions and 14 deletions
--- a/thrimbletrimmer/edit.html
+++ b/thrimbletrimmer/edit.html
@ -18,6 +18,8 @@
 			content="345276493482-r84m2giavk10glnmqna0lbq8e1hdaus0.apps.googleusercontent.com"
 		/>
 		<script src="https://apis.google.com/js/platform.js?onload=onGLoad" async defer></script>
+		<link rel="stylesheet" href="https://unpkg.com/jcrop/dist/jcrop.css">
+		<script src="https://unpkg.com/jcrop"></script>
 	</head>
 	<body>
 		<div id="errors"></div>
@ -261,6 +263,20 @@
 							Regions are given as pixel coordinates of the top-left and bottom-right corners. <br/>
 							Note that if the regions are different sizes, the image will be stretched. <br/>

+							<button id="video-info-thumbnail-template-source-image-update">
+								Update Source Images
+							</button>
+							<br/>
+							
+							<div class="video-info-thumbnail-advanced-crop-flex-wrapper">
+								<div class="video-info-thumbnail-advanced-crop-flex-item">
+									<img
+										id="video-info-thumbnail-template-video-source-image"
+										class="hidden"
+										alt="Thumbnail preview image"
+										height="360" width="640"
+									/>
+									<br/>
 									Crop:
 									<input type="text" class="video-info-thumbnail-position" id="video-info-thumbnail-crop-0" />
 									<input type="text" class="video-info-thumbnail-position" id="video-info-thumbnail-crop-1" />
@ -268,7 +284,16 @@
 									<input type="text" class="video-info-thumbnail-position" id="video-info-thumbnail-crop-2" />
 									<input type="text" class="video-info-thumbnail-position" id="video-info-thumbnail-crop-3" />
 									<br/>
+								</div>
 								
+								<div class="video-info-thumbnail-advanced-crop-flex-item">
+									<img
+										id="video-info-thumbnail-template-overlay-image"
+										class="hidden"
+										alt="Thumbnail preview image"
+										height="360" width="640"
+									/>
+									<br/>
 									Location:
 									<input type="text" class="video-info-thumbnail-position" id="video-info-thumbnail-location-0" />
 									<input type="text" class="video-info-thumbnail-position" id="video-info-thumbnail-location-1" />
@ -276,6 +301,8 @@
 									<input type="text" class="video-info-thumbnail-position" id="video-info-thumbnail-location-2" />
 									<input type="text" class="video-info-thumbnail-position" id="video-info-thumbnail-location-3" />
 									<br/>
+								</div>
+							</div>
 						</details>
 					</div>
 					<div
--- a/thrimbletrimmer/scripts/edit.js
+++ b/thrimbletrimmer/scripts/edit.js
@ -15,6 +15,10 @@ const PAGE_STATE = {
 	CONFIRMING: 3,
 };

+// References to Jcrop "stages" for the advanced thumbnail editor crop tool
+var videoFrameStage;
+var templateStage;
+
 window.addEventListener("DOMContentLoaded", async (event) => {
 	commonPageSetup();
 	globalLoadChatWorker.onmessage = (event) => {
@ -259,6 +263,42 @@ window.addEventListener("DOMContentLoaded", async (event) => {
 			});
 	}

+	document
+		.getElementById("video-info-thumbnail-template-source-image-update")
+		.addEventListener("click", async (_event) => {
+			const videoFrameImageElement = document.getElementById("video-info-thumbnail-template-video-source-image");
+
+			const timeEntryElement = document.getElementById("video-info-thumbnail-time");
+			const imageTime = wubloaderTimeFromVideoHumanTime(timeEntryElement.value);
+			if (imageTime === null) {
+				videoFrameImageElement.classList.add("hidden");
+				addError("Couldn't preview thumbnail; couldn't parse thumbnail frame timestamp");
+				return;
+			}
+			const imageTemplate = document.getElementById("video-info-thumbnail-template").value;
+			const videoFrameQuery = new URLSearchParams({
+				timestamp: imageTime,
+			});
+			videoFrameImageElement.src = `/frame/${globalStreamName}/source.png?${videoFrameQuery}`;
+			videoFrameImageElement.classList.remove("hidden");
+
+			const templateImageElement = document.getElementById("video-info-thumbnail-template-overlay-image");
+
+			templateImageElement.src = `/thrimshim/template/${imageTemplate}.png`;
+			templateImageElement.classList.remove("hidden");
+
+			createTemplateCropWidgets();
+		});
+
+	document.getElementById("video-info-thumbnail-crop-0").addEventListener("input", updateTemplateCropWidgets);
+	document.getElementById("video-info-thumbnail-crop-1").addEventListener("input", updateTemplateCropWidgets);
+	document.getElementById("video-info-thumbnail-crop-2").addEventListener("input", updateTemplateCropWidgets);
+	document.getElementById("video-info-thumbnail-crop-3").addEventListener("input", updateTemplateCropWidgets);
+	document.getElementById("video-info-thumbnail-location-0").addEventListener("input", updateTemplateCropWidgets);
+	document.getElementById("video-info-thumbnail-location-1").addEventListener("input", updateTemplateCropWidgets);
+	document.getElementById("video-info-thumbnail-location-2").addEventListener("input", updateTemplateCropWidgets);
+	document.getElementById("video-info-thumbnail-location-3").addEventListener("input", updateTemplateCropWidgets);
+
 	document
 		.getElementById("video-info-thumbnail-template-preview-generate")
 		.addEventListener("click", async (_event) => {
@ -2156,3 +2196,70 @@ function canEditMetadata() {
 function isNonVideoInput(element) {
 	return element.id.startsWith("data-correction-force-reset");
 }
+
+/** 
+ * Helper function to create the Jcrop widgets the first time the user chooses
+ * to load the advanced template cropping tool images in a given session. 
+ */
+function createTemplateCropWidgets() {
+	if (videoFrameStage == null) {
+		videoFrameStage = Jcrop.attach('video-info-thumbnail-template-video-source-image');
+		videoFrameStage.listen('crop.update',function(widget,e){
+			const pos = widget.pos;
+			const fieldX1 = document.getElementById("video-info-thumbnail-crop-0");
+			const fieldY1 = document.getElementById("video-info-thumbnail-crop-1");
+			const fieldX2 = document.getElementById("video-info-thumbnail-crop-2");
+			const fieldY2 = document.getElementById("video-info-thumbnail-crop-3");
+			fieldX1.value = pos.x*2;
+			fieldY1.value = pos.y*2;
+			fieldX2.value = (pos.x+pos.w)*2;
+			fieldY2.value = (pos.y+pos.h)*2;
+		});
+	}
+	if (templateStage == null) {
+		templateStage = Jcrop.attach('video-info-thumbnail-template-overlay-image');
+		templateStage.listen('crop.change',function(widget,e){
+			const pos = widget.pos;
+			const fieldX1 = document.getElementById("video-info-thumbnail-location-0");
+			const fieldY1 = document.getElementById("video-info-thumbnail-location-1");
+			const fieldX2 = document.getElementById("video-info-thumbnail-location-2");
+			const fieldY2 = document.getElementById("video-info-thumbnail-location-3");
+			fieldX1.value = pos.x*2;
+			fieldY1.value = pos.y*2;
+			fieldX2.value = (pos.x+pos.w)*2;
+			fieldY2.value = (pos.y+pos.h)*2;
+		});
+	}
+
+	updateTemplateCropWidgets();
+}
+
+/**
+ * Helper function to update the Jcrop widgets (creating them if needed) based
+ * on the current values in the advanced template cropping text input fields.
+ */
+function updateTemplateCropWidgets() {
+	const videoFieldX1 = document.getElementById("video-info-thumbnail-crop-0");
+	const videoFieldY1 = document.getElementById("video-info-thumbnail-crop-1");
+	const videoFieldX2 = document.getElementById("video-info-thumbnail-crop-2");
+	const videoFieldY2 = document.getElementById("video-info-thumbnail-crop-3");
+	const videoFrameRect = Jcrop.Rect.create(videoFieldX1.value/2, videoFieldY1.value/2, (videoFieldX2.value-videoFieldX1.value)/2, (videoFieldY2.value-videoFieldY1.value)/2);
+	if (videoFrameStage.active == null) {
+		videoFrameStage.newWidget(videoFrameRect);
+	} else {
+		videoFrameStage.active.pos = videoFrameRect;
+		videoFrameStage.active.render();
+	}
+
+	const templateFieldX1 = document.getElementById("video-info-thumbnail-location-0");
+	const templateFieldY1 = document.getElementById("video-info-thumbnail-location-1");
+	const templateFieldX2 = document.getElementById("video-info-thumbnail-location-2");
+	const templateFieldY2 = document.getElementById("video-info-thumbnail-location-3");
+	const templateRect = Jcrop.Rect.create(templateFieldX1.value/2, templateFieldY1.value/2, (templateFieldX2.value-templateFieldX1.value)/2, (templateFieldY2.value-templateFieldY1.value)/2);
+	if (templateStage.active == null) {
+		templateStage.newWidget(templateRect);
+	} else {
+		templateStage.active.pos = templateRect;
+		templateStage.active.render();
+	}
+}
--- a/thrimbletrimmer/styles/thrimbletrimmer.css
+++ b/thrimbletrimmer/styles/thrimbletrimmer.css
@ -371,6 +371,18 @@ input.range-definition-chapter-marker-description {
 	max-width: 320px;
 }

+#video-info-thumbnail-template-video-source-image {
+	max-width: 640px;
+}
+
+#video-info-thumbnail-template-overlay-image {
+	max-width: 640px;
+}
+
+.video-info-thumbnail-advanced-crop-flex-wrapper {
+	display: flex;
+}
+
 .submission-response-error {
 	white-space: pre-wrap;
 }