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/*
* Copyright (C) 2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
WI.BoxShadowEditor = class BoxShadowEditor extends WI.Object
{
constructor()
{
super();
this._element = document.createElement("div");
this._element.classList.add("box-shadow-editor");
let tableElement = this._element.appendChild(document.createElement("table"));
function createInputRow(identifier, label) {
let id = `box-shadow-editor-${identifier}-input`;
let rowElement = tableElement.appendChild(document.createElement("tr"));
rowElement.className = identifier;
let headerElement = rowElement.appendChild(document.createElement("th"));
let labelElement = headerElement.appendChild(document.createElement("label"));
labelElement.setAttribute("for", id);
labelElement.textContent = label;
let dataElement = rowElement.appendChild(document.createElement("td"));
let inputElement = dataElement.appendChild(document.createElement("input"));
inputElement.id = id;
return {rowElement, inputElement};
}
function createSlider(rowElement, min, max) {
let dataElement = rowElement.appendChild(document.createElement("td"));
let rangeElement = dataElement.appendChild(document.createElement("input"));
rangeElement.type = "range";
rangeElement.min = min;
rangeElement.max = max;
return rangeElement;
}
let offsetXRow = createInputRow("offset-x", WI.UIString("Offset X", "Offset X @ Box Shadow Editor", "Input label for the x-axis of the offset of a CSS box shadow"));
this._offsetXInput = offsetXRow.inputElement;
this._offsetXInput.spellcheck = false;
this._offsetXInput.addEventListener("input", this._handleOffsetXInputInput.bind(this));
this._offsetXInput.addEventListener("keydown", this._handleOffsetXInputKeyDown.bind(this));
let offsetSliderDataElement = offsetXRow.rowElement.appendChild(document.createElement("td"));
offsetSliderDataElement.setAttribute("rowspan", 3);
this._offsetSliderKnobRadius = 5; // keep in sync with `.box-shadow-editor > table > tr > td > svg circle`
this._offsetSliderAreaSize = 100;
const offsetSliderContainerSize = this._offsetSliderAreaSize + (this._offsetSliderKnobRadius * 2);
this._offsetSliderSVG = offsetSliderDataElement.appendChild(createSVGElement("svg"));
this._offsetSliderSVG.setAttribute("tabindex", 0);
this._offsetSliderSVG.setAttribute("width", offsetSliderContainerSize);
this._offsetSliderSVG.setAttribute("height", offsetSliderContainerSize);
this._offsetSliderSVG.addEventListener("mousedown", this);
this._offsetSliderSVG.addEventListener("keydown", this);
this._offsetSliderSVGMouseDownPoint = null;
let offsetSliderGroup = this._offsetSliderSVG.appendChild(createSVGElement("g"));
offsetSliderGroup.setAttribute("transform", `translate(${this._offsetSliderKnobRadius}, ${this._offsetSliderKnobRadius})`);
let offsetSliderXAxisLine = offsetSliderGroup.appendChild(createSVGElement("line"));
offsetSliderXAxisLine.classList.add("axis");
offsetSliderXAxisLine.setAttribute("x1", this._offsetSliderAreaSize / 2);
offsetSliderXAxisLine.setAttribute("y1", 0);
offsetSliderXAxisLine.setAttribute("x2", this._offsetSliderAreaSize / 2);
offsetSliderXAxisLine.setAttribute("y2", this._offsetSliderAreaSize);
let offsetSliderYAxisLine = offsetSliderGroup.appendChild(createSVGElement("line"));
offsetSliderYAxisLine.classList.add("axis");
offsetSliderYAxisLine.setAttribute("x1", 0);
offsetSliderYAxisLine.setAttribute("y1", this._offsetSliderAreaSize / 2);
offsetSliderYAxisLine.setAttribute("x2", this._offsetSliderAreaSize);
offsetSliderYAxisLine.setAttribute("y2", this._offsetSliderAreaSize / 2);
this._offsetSliderLine = offsetSliderGroup.appendChild(createSVGElement("line"));
this._offsetSliderLine.setAttribute("x1", this._offsetSliderAreaSize / 2);
this._offsetSliderLine.setAttribute("y1", this._offsetSliderAreaSize / 2);
this._offsetSliderKnob = offsetSliderGroup.appendChild(createSVGElement("circle"));
let offsetYRow = createInputRow("offset-y", WI.UIString("Offset Y", "Offset Y @ Box Shadow Editor", "Input label for the y-axis of the offset of a CSS box shadow"));
this._offsetYInput = offsetYRow.inputElement;
this._offsetYInput.spellcheck = false;
this._offsetYInput.addEventListener("input", this._handleOffsetYInputInput.bind(this));
this._offsetYInput.addEventListener("keydown", this._handleOffsetYInputKeyDown.bind(this));
let insetRow = createInputRow("inset", WI.UIString("Inset", "Inset @ Box Shadow Editor", "Checkbox label for the inset of a CSS box shadow."));
this._insetCheckbox = insetRow.inputElement;
this._insetCheckbox.type = "checkbox";
this._insetCheckbox.addEventListener("change", this._handleInsetCheckboxChange.bind(this));
let blurRadiusRow = createInputRow("blur-radius", WI.UIString("Blur", "Blur @ Box Shadow Editor", "Input label for the blur radius of a CSS box shadow"));
this._blurRadiusInput = blurRadiusRow.inputElement;
this._blurRadiusInput.spellcheck = false;
this._blurRadiusInput.addEventListener("input", this._handleBlurRadiusInputInput.bind(this));
this._blurRadiusInput.addEventListener("keydown", this._handleBlurRadiusInputKeyDown.bind(this));
this._blurRadiusInput.min = 0;
this._blurRadiusSlider = createSlider(blurRadiusRow.rowElement, 0, 100);
this._blurRadiusSlider.addEventListener("input", this._handleBlurRadiusSliderInput.bind(this));
let spreadRadiusRow = createInputRow("spread-radius", WI.UIString("Spread", "Spread @ Box Shadow Editor", "Input label for the spread radius of a CSS box shadow"));
this._spreadRadiusInput = spreadRadiusRow.inputElement;
this._spreadRadiusInput.spellcheck = false;
this._spreadRadiusInput.addEventListener("input", this._handleSpreadRadiusInputInput.bind(this));
this._spreadRadiusInput.addEventListener("keydown", this._handleSpreadRadiusInputKeyDown.bind(this));
this._spreadRadiusSlider = createSlider(spreadRadiusRow.rowElement, -50, 50);
this._spreadRadiusSlider.addEventListener("input", this._handleSpreadRadiusSliderInput.bind(this));
this._colorPicker = new WI.ColorPicker;
this._colorPicker.addEventListener(WI.ColorPicker.Event.ColorChanged, this._handleColorChanged, this);
this._element.appendChild(this._colorPicker.element);
this.boxShadow = new WI.BoxShadow;
WI.addWindowKeydownListener(this);
}
// Public
get element() { return this._element; }
get boxShadow()
{
return this._boxShadow;
}
set boxShadow(boxShadow)
{
console.assert(boxShadow instanceof WI.BoxShadow);
this._boxShadow = boxShadow;
let offsetX = this._boxShadow?.offsetX || {value: 0, unit: ""};
let offsetY = this._boxShadow?.offsetY || {value: 0, unit: ""};
this._offsetXInput.value = offsetX.value + offsetX.unit;
this._offsetYInput.value = offsetY.value + offsetY.unit;
let offsetSliderCenter = this._offsetSliderAreaSize / 2;
let offsetSliderX = Number.constrain(offsetX.value + offsetSliderCenter, 0, this._offsetSliderAreaSize);
let offsetSliderY = Number.constrain(offsetY.value + offsetSliderCenter, 0, this._offsetSliderAreaSize);
this._offsetSliderLine.setAttribute("x2", offsetSliderX);
this._offsetSliderKnob.setAttribute("cx", offsetSliderX);
this._offsetSliderLine.setAttribute("y2", offsetSliderY);
this._offsetSliderKnob.setAttribute("cy", offsetSliderY);
let blurRadius = this._boxShadow?.blurRadius || {value: 0, unit: ""};
this._blurRadiusInput.value = blurRadius.value + blurRadius.unit;
this._blurRadiusSlider.value = blurRadius.value;
let spreadRadius = this._boxShadow?.spreadRadius || {value: 0, unit: ""};
this._spreadRadiusInput.value = spreadRadius.value + spreadRadius.unit;
this._spreadRadiusSlider.value = spreadRadius.value;
let inset = this._boxShadow?.inset || false;
this._insetCheckbox.checked = inset;
let color = this._boxShadow?.color || WI.Color.fromString("transparent");
this._colorPicker.color = color;
}
// Protected
handleEvent(event)
{
switch (event.type) {
case "keydown":
console.assert(event.target === this._offsetSliderSVG);
this._handleOffsetSliderSVGKeyDown(event);
return;
case "mousedown":
console.assert(event.target === this._offsetSliderSVG);
this._handleOffsetSliderSVGMouseDown(event);
return;
case "mousemove":
this._handleWindowMouseMove(event);
return;
case "mouseup":
this._handleWindowMouseUp(event);
return;
}
console.assert();
}
// Private
_updateBoxShadow({offsetX, offsetY, blurRadius, spreadRadius, inset, color})
{
let change = false;
if (!offsetX)
offsetX = this._boxShadow.offsetX;
else if (!Object.shallowEqual(offsetX, this._boxShadow.offsetX))
change = true;
if (!offsetY)
offsetY = this._boxShadow.offsetY;
else if (!Object.shallowEqual(offsetY, this._boxShadow.offsetY))
change = true;
if (!blurRadius)
blurRadius = this._boxShadow.blurRadius;
else if (!Object.shallowEqual(blurRadius, this._boxShadow.blurRadius))
change = true;
if (!spreadRadius)
spreadRadius = this._boxShadow.spreadRadius;
else if (!Object.shallowEqual(spreadRadius, this._boxShadow.spreadRadius))
change = true;
if (inset === undefined)
inset = this._boxShadow.inset;
else if (inset !== this._boxShadow.inset)
change = true;
if (!color)
color = this._boxShadow.color;
else if (color.toString() !== this._boxShadow.color?.toString())
change = true;
if (!change)
return;
this.boxShadow = new WI.BoxShadow(offsetX, offsetY, blurRadius, spreadRadius, inset, color);
this.dispatchEventToListeners(WI.BoxShadowEditor.Event.BoxShadowChanged, {boxShadow: this._boxShadow});
}
_updateBoxShadowOffsetFromSliderMouseEvent(event, saveMouseDownPoint)
{
let point = WI.Point.fromEventInElement(event, this._offsetSliderSVG);
point.x = Number.constrain(point.x - this._offsetSliderKnobRadius, 0, this._offsetSliderAreaSize);
point.y = Number.constrain(point.y - this._offsetSliderKnobRadius, 0, this._offsetSliderAreaSize);
if (saveMouseDownPoint)
this._offsetSliderSVGMouseDownPoint = point;
if (event.shiftKey && this._offsetSliderSVGMouseDownPoint) {
if (Math.abs(this._offsetSliderSVGMouseDownPoint.x - point.x) > Math.abs(this._offsetSliderSVGMouseDownPoint.y - point.y))
point.y = this._offsetSliderSVGMouseDownPoint.y;
else
point.x = this._offsetSliderSVGMouseDownPoint.x;
}
let offsetSliderCenter = this._offsetSliderAreaSize / 2;
this._updateBoxShadow({
offsetX: {
value: point.x - offsetSliderCenter,
unit: this._boxShadow.offsetX.unit,
},
offsetY: {
value: point.y - offsetSliderCenter,
unit: this._boxShadow.offsetY.unit,
},
});
}
_determineShiftForEvent(event)
{
let shift = 0;
if (event.key === "ArrowUp")
shift = 1;
else if (event.key === "ArrowDown")
shift = -1;
if (!shift)
return NaN;
if (event.metaKey)
shift *= 100;
else if (event.shiftKey)
shift *= 10;
else if (event.altKey)
shift /= 10;
event.preventDefault();
return shift;
}
_handleOffsetSliderSVGKeyDown(event) {
let shiftX = 0;
let shiftY = 0;
switch (event.keyCode) {
case WI.KeyboardShortcut.Key.Up.keyCode:
shiftY = -1;
break;
case WI.KeyboardShortcut.Key.Right.keyCode:
shiftX = 1;
break;
case WI.KeyboardShortcut.Key.Down.keyCode:
shiftY = 1;
break;
case WI.KeyboardShortcut.Key.Left.keyCode:
shiftX = -1;
break;
}
if (!shiftX && !shiftY)
return false;
let multiplier = 1;
if (event.shiftKey)
multiplier = 10;
else if (event.altKey)
multiplier = 0.1;
shiftX *= multiplier;
shiftY *= multiplier;
let offsetValueLimit = this._offsetSliderAreaSize / 2;
this._updateBoxShadow({
offsetX: {
value: Number.constrain(this._boxShadow.offsetX.value + shiftX, -1 * offsetValueLimit, offsetValueLimit).maxDecimals(1),
unit: this._boxShadow.offsetX.unit,
},
offsetY: {
value: Number.constrain(this._boxShadow.offsetY.value + shiftY, -1 * offsetValueLimit, offsetValueLimit).maxDecimals(1),
unit: this._boxShadow.offsetY.unit,
},
});
}
_handleOffsetSliderSVGMouseDown(event)
{
if (event.button !== 0)
return;
event.stop();
this._offsetSliderSVG.focus();
window.addEventListener("mousemove", this, true);
window.addEventListener("mouseup", this, true);
this._updateBoxShadowOffsetFromSliderMouseEvent(event, true);
}
_handleWindowMouseMove(event)
{
this._updateBoxShadowOffsetFromSliderMouseEvent(event);
}
_handleWindowMouseUp(event)
{
this._offsetSliderSVGMouseDownPoint = null;
window.removeEventListener("mousemove", this, true);
window.removeEventListener("mouseup", this, true);
}
_handleOffsetXInputInput(event)
{
this._updateBoxShadow({
offsetX: WI.BoxShadow.parseNumberComponent(this._offsetXInput.value),
});
}
_handleOffsetXInputKeyDown(event)
{
let shift = this._determineShiftForEvent(event);
if (isNaN(shift))
return;
this._updateBoxShadow({
offsetX: {
value: (this._boxShadow.offsetX.value + shift).maxDecimals(1),
unit: this._boxShadow.offsetX.unit,
},
});
}
_handleOffsetYInputInput(event)
{
this._updateBoxShadow({
offsetY: WI.BoxShadow.parseNumberComponent(this._offsetYInput.value),
});
}
_handleOffsetYInputKeyDown(event)
{
let shift = this._determineShiftForEvent(event);
if (isNaN(shift))
return;
this._updateBoxShadow({
offsetY: {
value: (this._boxShadow.offsetY.value + shift).maxDecimals(1),
unit: this._boxShadow.offsetY.unit,
},
});
}
_handleBlurRadiusInputInput(event)
{
this._updateBoxShadow({
blurRadius: WI.BoxShadow.parseNumberComponent(this._blurRadiusInput.value),
});
}
_handleBlurRadiusInputKeyDown(event)
{
let shift = this._determineShiftForEvent(event);
if (isNaN(shift))
return;
this._updateBoxShadow({
blurRadius: {
value: (this._boxShadow.blurRadius.value + shift).maxDecimals(1),
unit: this._boxShadow.blurRadius.unit,
}
});
}
_handleBlurRadiusSliderInput(event)
{
this._updateBoxShadow({
blurRadius: {
value: this._blurRadiusSlider.valueAsNumber,
unit: this._boxShadow.blurRadius.unit,
}
});
}
_handleSpreadRadiusInputInput(event)
{
this._updateBoxShadow({
spreadRadius: WI.BoxShadow.parseNumberComponent(this._spreadRadiusInput.value),
});
}
_handleSpreadRadiusInputKeyDown(event)
{
let shift = this._determineShiftForEvent(event);
if (isNaN(shift))
return;
this._updateBoxShadow({
spreadRadius: {
value: (this._boxShadow.spreadRadius.value + shift).maxDecimals(1),
unit: this._boxShadow.spreadRadius.unit,
}
});
}
_handleSpreadRadiusSliderInput(event)
{
this._updateBoxShadow({
spreadRadius: {
value: this._spreadRadiusSlider.valueAsNumber,
unit: this._boxShadow.spreadRadius.unit,
}
});
}
_handleInsetCheckboxChange(event)
{
this._updateBoxShadow({
inset: !!this._insetCheckbox.checked,
});
}
_handleColorChanged(event)
{
this._updateBoxShadow({
color: this._colorPicker.color,
});
}
};
WI.BoxShadowEditor.Event = {
BoxShadowChanged: "box-shadow-editor-box-shadow-changed"
};