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class AspectRatioSliderController {
constructor(widthSlider, heightSlider, ratioSource, roundingSource, roundingMethod) {
//References
this.widthSlider = new SliderComponentController(widthSlider);
this.heightSlider = new SliderComponentController(heightSlider);
this.ratioSource = new DropdownComponentController(ratioSource);
this.roundingSource = new CheckboxComponentController(roundingSource);
this.roundingMethod = new RadioComponentController(roundingMethod);
this.roundingIndicatorBadge = document.createElement("div");
// Badge implementation
this.roundingIndicatorBadge.innerText = "📐";
this.roundingIndicatorBadge.classList.add("rounding-badge");
this.ratioSource.element.appendChild(this.roundingIndicatorBadge);
// Check initial value of ratioSource to set badge visbility
let initialRatio = this.ratioSource.getVal();
if (!initialRatio.includes(":")) {
this.roundingIndicatorBadge.style.display = "none";
}
//Adjust badge icon if rounding is on
if (this.roundingSource.getVal()) {
this.roundingIndicatorBadge.classList.add("active");
this.roundingIndicatorBadge.innerText = "⚠️";
}
//Make badge clickable to toggle setting
this.roundingIndicatorBadge.addEventListener("click", () => {
this.roundingSource.setVal(!this.roundingSource.getVal());
});
//Make rounding setting toggle badge text and style if setting changes
this.roundingSource.child.addEventListener("change", () => {
if (this.roundingSource.getVal()) {
this.roundingIndicatorBadge.classList.add("active");
this.roundingIndicatorBadge.innerText = "⚠️";
}
else {
this.roundingIndicatorBadge.classList.remove("active");
this.roundingIndicatorBadge.innerText = "📐";
}
this.adjustStepSize();
});
//Other event listeners
this.widthSlider.childRangeField.addEventListener("change", (e) => { e.preventDefault(); this.resize("width"); });
this.widthSlider.childNumField.addEventListener("change", (e) => { e.preventDefault(); this.resize("width"); });
this.heightSlider.childRangeField.addEventListener("change", (e) => { e.preventDefault(); this.resize("height"); });
this.heightSlider.childNumField.addEventListener("change", (e) => { e.preventDefault(); this.resize("height"); });
this.ratioSource.childSelector.addEventListener("change", (e) => {
e.preventDefault();
//Check and toggle display of badge conditionally on dropdown selection
if (!this.ratioSource.getVal().includes(":")) {
this.roundingIndicatorBadge.style.display = 'none';
}
else {
this.roundingIndicatorBadge.style.display = 'block';
}
this.adjustStepSize();
});
}
resize(dimension) {
//For moving slider or number field
let val = this.ratioSource.getVal();
if (!val.includes(":")) {
return;
}
let [width, height] = val.split(":").map(Number);
let ratio = width / height;
if (dimension == 'width') {
let newHeight = parseInt(this.widthSlider.getVal()) / ratio;
if (this.roundingSource.getVal()) {
switch (this.roundingMethod.getVal()) {
case 'Round':
newHeight = Math.round(newHeight / 8) * 8;
break;
case 'Ceiling':
newHeight = Math.ceil(newHeight / 8) * 8;
break;
case 'Floor':
newHeight = Math.floor(newHeight / 8) * 8;
break;
}
}
this.heightSlider.setVal(newHeight.toString());
}
else if (dimension == "height") {
let newWidth = parseInt(this.heightSlider.getVal()) * ratio;
if (this.roundingSource.getVal()) {
switch (this.roundingMethod.getVal()) {
case 'Round':
newWidth = Math.round(newWidth / 8) * 8;
break;
case 'Ceiling':
newWidth = Math.ceil(newWidth / 8) * 8;
break;
case 'Floor':
newWidth = Math.floor(newWidth / 8) * 8;
break;
}
}
this.widthSlider.setVal(newWidth.toString());
}
}
adjustStepSize() {
/* Sets scales/precision/rounding steps;*/
let val = this.ratioSource.getVal();
if (!val.includes(":")) {
//If ratio unlocked
this.widthSlider.childRangeField.step = "8";
this.widthSlider.childRangeField.min = "64";
this.widthSlider.childNumField.step = "8";
this.widthSlider.childNumField.min = "64";
this.heightSlider.childRangeField.step = "8";
this.heightSlider.childRangeField.min = "64";
this.heightSlider.childNumField.step = "8";
this.heightSlider.childNumField.min = "64";
return;
}
//Format string and calculate step sizes
let [width, height] = val.split(":").map(Number);
let decimalPlaces = (width.toString().split(".")[1] || []).length;
//keep upto 6 decimal points of precision of ratio
//euclidean gcd does not support floats, so we scale it up
decimalPlaces = decimalPlaces > 6 ? 6 : decimalPlaces;
let gcd = this.gcd(width * 10 ** decimalPlaces, height * 10 ** decimalPlaces) / 10 ** decimalPlaces;
let stepSize = 8 * height / gcd;
let stepSizeOther = 8 * width / gcd;
if (this.roundingSource.getVal()) {
//If rounding is on set/keep default stepsizes
this.widthSlider.childRangeField.step = "8";
this.widthSlider.childRangeField.min = "64";
this.widthSlider.childNumField.step = "8";
this.widthSlider.childNumField.min = "64";
this.heightSlider.childRangeField.step = "8";
this.heightSlider.childRangeField.min = "64";
this.heightSlider.childNumField.step = "8";
this.heightSlider.childNumField.min = "64";
}
else {
//if rounding is off, set step sizes so they enforce snapping
//min is changed, because it offsets snap positions
this.widthSlider.childRangeField.step = stepSizeOther.toString();
this.widthSlider.childRangeField.min = stepSizeOther.toString();
this.widthSlider.childNumField.step = stepSizeOther.toString();
this.widthSlider.childNumField.min = stepSizeOther.toString();
this.heightSlider.childRangeField.step = stepSize.toString();
this.heightSlider.childRangeField.min = stepSize.toString();
this.heightSlider.childNumField.step = stepSize.toString();
this.heightSlider.childNumField.min = stepSize.toString();
}
let currentWidth = parseInt(this.widthSlider.getVal());
//Rounding treated kinda like pythons divmod
let stepsTaken = Math.round(currentWidth / stepSizeOther);
//this snaps it to closest rule matches (rules being html step points, and ratio)
let newWidth = stepsTaken * stepSizeOther;
this.widthSlider.setVal(newWidth.toString());
this.heightSlider.setVal(Math.round(newWidth / (width / height)).toString());
}
gcd(a, b) {
//euclidean gcd
if (b === 0) {
return a;
}
return this.gcd(b, a % b);
}
static observeStartup(widthSliderId, heightSliderId, ratioSourceId, roundingSourceId, roundingMethodId) {
let observer = new MutationObserver(() => {
let widthSlider = document.querySelector("gradio-app").shadowRoot.getElementById(widthSliderId);
let heightSlider = document.querySelector("gradio-app").shadowRoot.getElementById(heightSliderId);
let ratioSource = document.querySelector("gradio-app").shadowRoot.getElementById(ratioSourceId);
let roundingSource = document.querySelector("gradio-app").shadowRoot.getElementById(roundingSourceId);
let roundingMethod = document.querySelector("gradio-app").shadowRoot.getElementById(roundingMethodId);
if (widthSlider && heightSlider && ratioSource && roundingSource && roundingMethod) {
observer.disconnect();
new AspectRatioSliderController(widthSlider, heightSlider, ratioSource, roundingSource, roundingMethod);
}
});
observer.observe(gradioApp(), { childList: true, subtree: true });
}
}
document.addEventListener("DOMContentLoaded", () => {
//Register mutation observer for self start-up;
AspectRatioSliderController.observeStartup("txt2img_width", "txt2img_height", "txt2img_ratio", "setting_aspect_ratios_rounding", "setting_aspect_ratios_rounding_method");
AspectRatioSliderController.observeStartup("img2img_width", "img2img_height", "img2img_ratio", "setting_aspect_ratios_rounding", "setting_aspect_ratios_rounding_method");
});
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