| <!-- |
| Copyright (C) 2012 Google 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. |
| 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of |
| its contributors may be used to endorse or promote products derived |
| from this software without specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY APPLE 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 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. |
| --> |
| <!DOCTYPE html> |
| <html> |
| <head> |
| <script src="inspect_tool_common.js"></script> |
| <link rel="stylesheet" href="inspect_tool_common.css"> |
| <style> |
| body { |
| --arrow-width: 15px; |
| --arrow-height: 8px; |
| --shadow-up: 5px; |
| --shadow-down: -5px; |
| --shadow-direction: var(--shadow-up); |
| --arrow-up: polygon(0 0, 100% 0, 50% 100%); |
| --arrow-down: polygon(50% 0, 0 100%, 100% 100%); |
| --arrow: var(--arrow-up); |
| } |
| |
| .px { |
| color: rgb(128, 128, 128); |
| } |
| |
| #element-title { |
| position: absolute; |
| z-index: 10; |
| } |
| |
| /* Material */ |
| |
| .tooltip-content { |
| position: absolute; |
| z-index: 10; |
| -webkit-user-select: none; |
| } |
| |
| .tooltip-content { |
| background-color: white; |
| padding: 5px 8px; |
| border: 1px solid white; |
| border-radius: 3px; |
| box-sizing: border-box; |
| min-width: 100px; |
| max-width: 300px; |
| z-index: 1; |
| background-clip: padding-box; |
| will-change: transform; |
| text-rendering: optimizeLegibility; |
| pointer-events: none; |
| filter: drop-shadow(0 2px 4px rgba(0,0,0,0.35)); |
| } |
| |
| .tooltip-content::after { |
| content: ""; |
| background: white; |
| width: var(--arrow-width); |
| height: var(--arrow-height); |
| clip-path: var(--arrow); |
| position: absolute; |
| top: var(--arrow-top); |
| left: var(--arrow-left); |
| visibility: var(--arrow-visibility); |
| } |
| |
| .element-info-section { |
| margin-top: 12px; |
| margin-bottom: 6px; |
| } |
| |
| .section-name { |
| color: #333; |
| font-weight: 500; |
| font-size: 10px; |
| text-transform: uppercase; |
| letter-spacing: .05em; |
| line-height: 12px; |
| } |
| |
| .element-info { |
| display: flex; |
| flex-direction: column; |
| } |
| |
| .element-info-header { |
| display: flex; |
| align-items: baseline; |
| } |
| |
| .element-info-body { |
| display: flex; |
| flex-direction: column; |
| padding-top: 2px; |
| margin-top: 2px; |
| } |
| |
| .element-info-row { |
| display: flex; |
| line-height: 19px; |
| } |
| |
| .separator-container { |
| display: flex; |
| align-items: center; |
| flex: auto; |
| margin-left: 7px; |
| } |
| |
| .separator { |
| border-top: 1px solid #ddd; |
| width: 100%; |
| } |
| |
| .element-info-name { |
| flex-shrink: 0; |
| color: #666; |
| } |
| |
| .element-info-gap { |
| flex: auto; |
| } |
| |
| .element-info-value-color { |
| display: flex; |
| color: rgb(48, 57, 66); |
| margin-left: 10px; |
| align-items: baseline; |
| } |
| |
| .element-info-value-contrast { |
| display: flex; |
| align-items: center; |
| text-align: right; |
| color: rgb(48, 57, 66); |
| margin-left: 10px; |
| } |
| |
| .element-info-value-contrast .a11y-icon { |
| margin-left: 8px; |
| } |
| |
| .element-info-value-icon { |
| display: flex; |
| align-items: center; |
| } |
| |
| .element-info-value-text { |
| text-align: right; |
| color: rgb(48, 57, 66); |
| margin-left: 10px; |
| align-items: baseline; |
| overflow: hidden; |
| text-overflow: ellipsis; |
| white-space: nowrap; |
| } |
| |
| .color-swatch { |
| display: flex; |
| margin-right: 2px; |
| width: 10px; |
| height: 10px; |
| background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAMCAIAAADZF8uwAAAAGUlEQVQYV2M4gwH+YwCGIasIUwhT25BVBADtzYNYrHvv4gAAAABJRU5ErkJggg==); |
| line-height: 10px; |
| } |
| |
| .color-swatch-inner { |
| flex: auto; |
| border: 1px solid rgba(128, 128, 128, 0.6); |
| } |
| |
| .element-description { |
| flex: 1 1; |
| font-weight: bold; |
| word-wrap: break-word; |
| word-break: break-all; |
| } |
| |
| .dimensions { |
| color: hsl(0, 0%, 45%); |
| text-align: right; |
| margin-left: 10px; |
| } |
| |
| .material-node-width { |
| margin-right: 2px; |
| } |
| |
| .material-node-height { |
| margin-left: 2px; |
| } |
| |
| .material-tag-name { |
| /* Keep this in sync with inspectorSyntaxHighlight.css (--dom-tag-name-color) */ |
| color: rgb(136, 18, 128); |
| } |
| |
| .material-class-name, .material-node-id { |
| /* Keep this in sync with inspectorSyntaxHighlight.css (.webkit-html-attribute-value) */ |
| color: rgb(26, 26, 166); |
| } |
| |
| .contrast-text { |
| width: 16px; |
| height: 16px; |
| text-align: center; |
| line-height: 16px; |
| margin-right: 8px; |
| border: 1px solid rgba(0, 0, 0, 0.1); |
| padding: 0 1px; |
| } |
| |
| .a11y-icon { |
| width: 16px; |
| height: 16px; |
| background-repeat: no-repeat; |
| display: inline-block; |
| } |
| |
| .a11y-icon-not-ok { |
| background-image: url('data:image/svg+xml,<svg fill="none" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg"><path d="m9 1.5c-4.14 0-7.5 3.36-7.5 7.5s3.36 7.5 7.5 7.5 7.5-3.36 7.5-7.5-3.36-7.5-7.5-7.5zm0 13.5c-3.315 0-6-2.685-6-6 0-1.3875.4725-2.6625 1.2675-3.675l8.4075 8.4075c-1.0125.795-2.2875 1.2675-3.675 1.2675zm4.7325-2.325-8.4075-8.4075c1.0125-.795 2.2875-1.2675 3.675-1.2675 3.315 0 6 2.685 6 6 0 1.3875-.4725 2.6625-1.2675 3.675z" fill="%239e9e9e"/></svg>'); |
| } |
| |
| .a11y-icon-warning { |
| background-image: url('data:image/svg+xml,<svg fill="none" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg"><path d="m8.25 11.25h1.5v1.5h-1.5zm0-6h1.5v4.5h-1.5zm.7425-3.75c-4.14 0-7.4925 3.36-7.4925 7.5s3.3525 7.5 7.4925 7.5c4.1475 0 7.5075-3.36 7.5075-7.5s-3.36-7.5-7.5075-7.5zm.0075 13.5c-3.315 0-6-2.685-6-6s2.685-6 6-6 6 2.685 6 6-2.685 6-6 6z" fill="%23e37400"/></svg>'); |
| } |
| |
| .a11y-icon-ok { |
| background-image: url('data:image/svg+xml,<svg fill="none" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg"><path d="m9 1.5c-4.14 0-7.5 3.36-7.5 7.5s3.36 7.5 7.5 7.5 7.5-3.36 7.5-7.5-3.36-7.5-7.5-7.5zm0 13.5c-3.3075 0-6-2.6925-6-6s2.6925-6 6-6 6 2.6925 6 6-2.6925 6-6 6zm-1.5-4.35-1.95-1.95-1.05 1.05 3 3 6-6-1.05-1.05z" fill="%230ca40c"/></svg>'); |
| } |
| |
| @media (forced-colors: active) { |
| :root, body { |
| background-color: transparent; |
| forced-color-adjust: none; |
| } |
| .tooltip-content { |
| border-color: Highlight; |
| background-color: Canvas; |
| color: Text; |
| forced-color-adjust: none; |
| } |
| .tooltip-content::after { |
| background-color: Highlight; |
| } |
| .color-swatch-inner, |
| .contrast-text, |
| .separator { |
| border-color: Highlight; |
| } |
| .dimensions, |
| .element-info-name, |
| .element-info-value-color, |
| .element-info-value-contrast, |
| .element-info-value-icon, |
| .element-info-value-text, |
| .material-tag-name, |
| .material-class-name, |
| .material-node-id { |
| color: CanvasText; |
| } |
| } |
| </style> |
| |
| |
| <script> |
| const lightGridColor = "rgba(0,0,0,0.2)"; |
| const darkGridColor = "rgba(0,0,0,0.7)"; |
| const transparentColor = "rgba(0, 0, 0, 0)"; |
| const gridBackgroundColor = "rgba(255, 255, 255, 0.8)"; |
| |
| function _drawAxis(context, rulerAtRight, rulerAtBottom) |
| { |
| if (window._gridPainted) |
| return; |
| window._gridPainted = true; |
| |
| context.save(); |
| |
| var pageFactor = pageZoomFactor * pageScaleFactor * emulationScaleFactor; |
| var scrollX = window.scrollX * pageScaleFactor; |
| var scrollY = window.scrollY * pageScaleFactor; |
| function zoom(x) |
| { |
| return Math.round(x * pageFactor); |
| } |
| function unzoom(x) |
| { |
| return Math.round(x / pageFactor); |
| } |
| |
| var width = canvasWidth / pageFactor; |
| var height = canvasHeight / pageFactor; |
| |
| const gridSubStep = 5; |
| const gridStep = 50; |
| |
| { |
| // Draw X grid background |
| context.save(); |
| context.fillStyle = gridBackgroundColor; |
| if (rulerAtBottom) |
| context.fillRect(0, zoom(height) - 15, zoom(width), zoom(height)); |
| else |
| context.fillRect(0, 0, zoom(width), 15); |
| |
| // Clip out backgrounds intersection |
| context.globalCompositeOperation = "destination-out"; |
| context.fillStyle = "red"; |
| if (rulerAtRight) |
| context.fillRect(zoom(width) - 15, 0, zoom(width), zoom(height)); |
| else |
| context.fillRect(0, 0, 15, zoom(height)); |
| context.restore(); |
| |
| // Draw Y grid background |
| context.fillStyle = gridBackgroundColor; |
| if (rulerAtRight) |
| context.fillRect(zoom(width) - 15, 0, zoom(width), zoom(height)); |
| else |
| context.fillRect(0, 0, 15, zoom(height)); |
| } |
| |
| context.lineWidth = 1; |
| context.strokeStyle = darkGridColor; |
| context.fillStyle = darkGridColor; |
| { |
| // Draw labels. |
| context.save(); |
| context.translate(-scrollX, 0.5 - scrollY); |
| var maxY = height + unzoom(scrollY); |
| for (var y = 2 * gridStep; y < maxY; y += 2 * gridStep) { |
| context.save(); |
| context.translate(scrollX, zoom(y)); |
| context.rotate(-Math.PI / 2); |
| context.fillText(y, 2, rulerAtRight ? zoom(width) - 7 : 13); |
| context.restore(); |
| } |
| context.translate(0.5, -0.5); |
| var maxX = width + unzoom(scrollX); |
| for (var x = 2 * gridStep; x < maxX; x += 2 * gridStep) { |
| context.save(); |
| context.fillText(x, zoom(x) + 2, rulerAtBottom ? scrollY + zoom(height) - 7 : scrollY + 13); |
| context.restore(); |
| } |
| context.restore(); |
| } |
| |
| { |
| // Draw vertical grid |
| context.save(); |
| if (rulerAtRight) { |
| context.translate(zoom(width), 0); |
| context.scale(-1, 1); |
| } |
| context.translate(-scrollX, 0.5 - scrollY); |
| var maxY = height + unzoom(scrollY); |
| for (var y = gridStep; y < maxY; y += gridStep) { |
| context.beginPath(); |
| context.moveTo(scrollX, zoom(y)); |
| var markLength = (y % (gridStep * 2)) ? 5 : 8; |
| context.lineTo(scrollX + markLength, zoom(y)); |
| context.stroke(); |
| } |
| context.strokeStyle = lightGridColor; |
| for (var y = gridSubStep; y < maxY; y += gridSubStep) { |
| if (!(y % gridStep)) |
| continue; |
| context.beginPath(); |
| context.moveTo(scrollX, zoom(y)); |
| context.lineTo(scrollX + gridSubStep, zoom(y)); |
| context.stroke(); |
| } |
| context.restore(); |
| } |
| |
| { |
| // Draw horizontal grid |
| context.save(); |
| if (rulerAtBottom) { |
| context.translate(0, zoom(height)); |
| context.scale(1, -1); |
| } |
| context.translate(0.5 - scrollX, -scrollY); |
| var maxX = width + unzoom(scrollX); |
| for (var x = gridStep; x < maxX; x += gridStep) { |
| context.beginPath(); |
| context.moveTo(zoom(x), scrollY); |
| var markLength = (x % (gridStep * 2)) ? 5 : 8; |
| context.lineTo(zoom(x), scrollY + markLength); |
| context.stroke(); |
| } |
| context.strokeStyle = lightGridColor; |
| for (var x = gridSubStep; x < maxX; x += gridSubStep) { |
| if (!(x % gridStep)) |
| continue; |
| context.beginPath(); |
| context.moveTo(zoom(x), scrollY); |
| context.lineTo(zoom(x), scrollY + gridSubStep); |
| context.stroke(); |
| } |
| context.restore(); |
| } |
| |
| context.restore(); |
| } |
| |
| function doReset() |
| { |
| document.getElementById("tooltip-container").removeChildren(); |
| window._gridPainted = false; |
| } |
| |
| /** |
| * @param {!String} hexa |
| * @return {!Array<number>} |
| */ |
| function parseHexa(hexa) { |
| return hexa.match(/#(\w\w)(\w\w)(\w\w)(\w\w)/).slice(1).map(c => parseInt(c, 16) / 255); |
| } |
| |
| /** |
| * @param {!String} hexa |
| * @return {!Array<number>} |
| */ |
| function normalizeColorString(hexa) { |
| if (hexa.endsWith("FF")) |
| return hexa.substr(0, 7); |
| const [r, g, b, a] = parseHexa(hexa); |
| return `rgba(${(r * 255).toFixed()}, ${(g * 255).toFixed()}, ${(b * 255).toFixed()}, ${Math.round(a * 100) / 100})`; |
| } |
| |
| /** |
| * Calculate the contrast ratio between a foreground and a background color. |
| * Returns the ratio to 1, for example for two colors with a contrast ratio of 21:1, |
| * this function will return 21. |
| * See http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef |
| * @param {!Array<number>} fgRGBA |
| * @param {!Array<number>} bgRGBA |
| * @return {number} |
| */ |
| function contrastRatio(fgRGBA, bgRGBA) { |
| // If we have a semi-transparent background color over an unknown |
| // background, draw the line for the "worst case" scenario: where |
| // the unknown background is the same color as the text. |
| bgRGBA = blendColors(bgRGBA, fgRGBA); |
| const fgLuminance = luminance(blendColors(fgRGBA, bgRGBA)); |
| const bgLuminance = luminance(bgRGBA); |
| const result = (Math.max(fgLuminance, bgLuminance) + 0.05) / (Math.min(fgLuminance, bgLuminance) + 0.05); |
| return result.toFixed(2); |
| |
| /** |
| * Calculate the luminance of this color using the WCAG algorithm. |
| * See http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef |
| * @param {!Array<number>} rgba |
| * @return {number} |
| */ |
| function luminance(rgba) { |
| const rSRGB = rgba[0]; |
| const gSRGB = rgba[1]; |
| const bSRGB = rgba[2]; |
| |
| const r = rSRGB <= 0.03928 ? rSRGB / 12.92 : Math.pow(((rSRGB + 0.055) / 1.055), 2.4); |
| const g = gSRGB <= 0.03928 ? gSRGB / 12.92 : Math.pow(((gSRGB + 0.055) / 1.055), 2.4); |
| const b = bSRGB <= 0.03928 ? bSRGB / 12.92 : Math.pow(((bSRGB + 0.055) / 1.055), 2.4); |
| |
| return 0.2126 * r + 0.7152 * g + 0.0722 * b; |
| } |
| |
| /** |
| * Combine the two given color according to alpha blending. |
| * @param {!Array<number>} fgRGBA |
| * @param {!Array<number>} bgRGBA |
| * @return {!Array<number>} |
| */ |
| function blendColors(fgRGBA, bgRGBA) { |
| const alpha = fgRGBA[3]; |
| return [ |
| ((1 - alpha) * bgRGBA[0]) + (alpha * fgRGBA[0]), |
| ((1 - alpha) * bgRGBA[1]) + (alpha * fgRGBA[1]), |
| ((1 - alpha) * bgRGBA[2]) + (alpha * fgRGBA[2]), |
| alpha + (bgRGBA[3] * (1 - alpha)) |
| ]; |
| } |
| } |
| |
| function computeIsLargeFont(contrast) { |
| const boldWeights = new Set(['bold', 'bolder', '600', '700', '800', '900']); |
| |
| const fontSizePx = parseFloat(contrast.fontSize.replace('px', '')); |
| const isBold = boldWeights.has(contrast.fontWeight); |
| |
| const fontSizePt = fontSizePx * 72 / 96; |
| if (isBold) |
| return fontSizePt >= 14; |
| else |
| return fontSizePt >= 18; |
| } |
| |
| function _createElementDescription(elementInfo) |
| { |
| const elementInfoElement = createElement("div", "element-info"); |
| const elementInfoHeaderElement = elementInfoElement.createChild("div", "element-info-header"); |
| const descriptionElement = elementInfoHeaderElement.createChild("div", "element-description monospace"); |
| const tagNameElement = descriptionElement.createChild("span", "material-tag-name"); |
| tagNameElement.textContent = elementInfo.tagName; |
| const nodeIdElement = descriptionElement.createChild("span", "material-node-id"); |
| const maxLength = 80; |
| nodeIdElement.textContent = elementInfo.idValue ? "#" + elementInfo.idValue.trimEnd(maxLength) : ""; |
| nodeIdElement.classList.toggle("hidden", !elementInfo.idValue); |
| |
| const classNameElement = descriptionElement.createChild("span", "material-class-name"); |
| if (nodeIdElement.textContent.length < maxLength) |
| classNameElement.textContent = (elementInfo.className || "").trimEnd(maxLength - nodeIdElement.textContent.length); |
| classNameElement.classList.toggle("hidden", !elementInfo.className); |
| const dimensionsElement = elementInfoHeaderElement.createChild("div", "dimensions"); |
| dimensionsElement.createChild("span", "material-node-width").textContent = Math.round(elementInfo.nodeWidth * 100) / 100; |
| dimensionsElement.createTextChild("\u00d7"); |
| dimensionsElement.createChild("span", "material-node-height").textContent = Math.round(elementInfo.nodeHeight * 100) / 100; |
| |
| const style = elementInfo.style || {}; |
| let elementInfoBodyElement; |
| |
| if (elementInfo.isLockedAncestor) |
| addTextRow("Showing the locked ancestor", ""); |
| |
| const color = style["color"]; |
| if (color && color !== "#00000000") |
| addColorRow("Color", color); |
| |
| const fontFamily = style["font-family"]; |
| const fontSize = style["font-size"]; |
| if (fontFamily && fontSize !== "0px") |
| addTextRow("Font", `${fontSize} ${fontFamily}`); |
| |
| const bgcolor = style["background-color"]; |
| if (bgcolor && bgcolor !== "#00000000") |
| addColorRow("Background", bgcolor); |
| |
| const margin = style["margin"]; |
| if (margin && margin !== "0px") |
| addTextRow("Margin", margin); |
| |
| const padding = style["padding"]; |
| if (padding && padding !== "0px") |
| addTextRow("Padding", padding); |
| |
| const cbgColor = elementInfo.contrast ? elementInfo.contrast.backgroundColor : null; |
| const hasContrastInfo = color && color !== "#00000000" && cbgColor && cbgColor !== "#00000000"; |
| |
| addSection("Accessibility"); |
| |
| if (hasContrastInfo) |
| addContrastRow(style["color"], elementInfo.contrast); |
| |
| addTextRow("Name", elementInfo.accessibleName); |
| addTextRow("Role", elementInfo.accessibleRole); |
| addIconRow("Keyboard-focusable", elementInfo.isKeyboardFocusable ? "a11y-icon a11y-icon-ok" : "a11y-icon a11y-icon-not-ok"); |
| |
| function ensureElementInfoBody() { |
| if (!elementInfoBodyElement) |
| elementInfoBodyElement = elementInfoElement.createChild("div", "element-info-body") |
| } |
| |
| function addSection(name) { |
| ensureElementInfoBody(); |
| const rowElement = elementInfoBodyElement.createChild("div", "element-info-row element-info-section"); |
| const nameElement = rowElement.createChild("div", "section-name"); |
| nameElement.textContent = name; |
| const separatorElement = rowElement |
| .createChild("div", "separator-container") |
| .createChild("div", "separator"); |
| } |
| |
| function addRow(name, rowClassName, valueClassName) { |
| ensureElementInfoBody(); |
| const rowElement = elementInfoBodyElement.createChild("div", "element-info-row"); |
| if (rowClassName) |
| rowElement.classList.add(rowClassName); |
| const nameElement = rowElement.createChild("div", "element-info-name"); |
| nameElement.textContent = name; |
| rowElement.createChild("div", "element-info-gap"); |
| return rowElement.createChild("div", valueClassName || ""); |
| } |
| |
| function addIconRow(name, value) { |
| addRow(name, "", "element-info-value-icon").createChild('div', value); |
| } |
| |
| function addTextRow(name, value) { |
| addRow(name, "", "element-info-value-text").createTextChild(value); |
| } |
| |
| function addColorRow(name, color) { |
| const valueElement = addRow(name, "", "element-info-value-color"); |
| const swatch = valueElement.createChild("div", "color-swatch"); |
| const inner = swatch.createChild("div", "color-swatch-inner"); |
| inner.style.backgroundColor = color; |
| valueElement.createTextChild(normalizeColorString(color)); |
| } |
| |
| function addContrastRow(fgColor, contrast) { |
| const ratio = contrastRatio(parseHexa(fgColor), parseHexa(contrast.backgroundColor)); |
| const threshold = computeIsLargeFont(contrast) ? 3.0 : 4.5; |
| const valueElement = addRow("Contrast", "", "element-info-value-contrast"); |
| const sampleText = valueElement.createChild("div", "contrast-text"); |
| sampleText.style.color = fgColor; |
| sampleText.style.backgroundColor = contrast.backgroundColor; |
| sampleText.textContent = "Aa"; |
| const valueSpan = valueElement.createChild("span"); |
| valueSpan.textContent = Math.round(ratio * 100) / 100; |
| valueElement.createChild("div", ratio < threshold ? "a11y-icon a11y-icon-warning" : "a11y-icon a11y-icon-ok"); |
| } |
| |
| return elementInfoElement; |
| } |
| |
| function _drawElementTitle(elementInfo, bounds) |
| { |
| const tooltipContainer = document.getElementById("tooltip-container"); |
| tooltipContainer.removeChildren(); |
| _createMaterialTooltip(tooltipContainer, bounds, _createElementDescription(elementInfo), true); |
| } |
| |
| function _createMaterialTooltip(parentElement, bounds, contentElement, withArrow) |
| { |
| const tooltipContainer = parentElement.createChild("div"); |
| const tooltipContent = tooltipContainer.createChild("div", "tooltip-content"); |
| tooltipContent.appendChild(contentElement); |
| |
| const titleWidth = tooltipContent.offsetWidth; |
| const titleHeight = tooltipContent.offsetHeight; |
| const arrowHalfWidth = 8; |
| const pageMargin = 2; |
| const arrowWidth = arrowHalfWidth * 2; |
| const arrowInset = arrowHalfWidth + 2; |
| |
| const containerMinX = pageMargin + arrowInset; |
| const containerMaxX = canvasWidth - pageMargin - arrowInset - arrowWidth; |
| |
| // Left align arrow to the tooltip but ensure it is pointing to the element. |
| // Center align arrow if the inspected element bounds are too narrow. |
| const boundsAreTooNarrow = bounds.maxX - bounds.minX < arrowWidth + 2 * arrowInset; |
| let arrowX; |
| if (boundsAreTooNarrow) { |
| arrowX = (bounds.minX + bounds.maxX) * 0.5 - arrowHalfWidth; |
| } else { |
| const xFromLeftBound = bounds.minX + arrowInset; |
| const xFromRightBound = bounds.maxX - arrowInset - arrowWidth; |
| if (xFromLeftBound > containerMinX && xFromLeftBound < containerMaxX) |
| arrowX = xFromLeftBound; |
| else |
| arrowX = Number.constrain(containerMinX, xFromLeftBound, xFromRightBound); |
| } |
| // Hide arrow if element is completely off the sides of the page. |
| const arrowHidden = !withArrow || arrowX < containerMinX || arrowX > containerMaxX; |
| |
| let boxX = arrowX - arrowInset; |
| boxX = Number.constrain(boxX, pageMargin, canvasWidth - titleWidth - pageMargin); |
| |
| let boxY = bounds.minY - arrowHalfWidth - titleHeight; |
| let onTop = true; |
| if (boxY < 0) { |
| boxY = Math.min(canvasHeight - titleHeight, bounds.maxY + arrowHalfWidth); |
| onTop = false; |
| } else if (bounds.minY > canvasHeight) { |
| boxY = canvasHeight - arrowHalfWidth - titleHeight; |
| } |
| |
| // If tooltip intersects with the bounds, hide it. |
| // Allow bounds to contain the box though for the large elements like <body>. |
| const includes = boxX >= bounds.minX && boxX + titleWidth <= bounds.maxX && |
| boxY >= bounds.minY && boxY + titleHeight <= bounds.maxY; |
| const overlaps = boxX < bounds.maxX && boxX + titleWidth > bounds.minX && |
| boxY < bounds.maxY && boxY + titleHeight > bounds.minY; |
| if (overlaps && !includes) { |
| tooltipContent.style.display = 'none'; |
| return; |
| } |
| |
| tooltipContent.style.top = boxY + "px"; |
| tooltipContent.style.left = boxX + "px"; |
| tooltipContent.style.setProperty('--arrow-visibility', (arrowHidden || includes) ? 'hidden' : 'visible'); |
| if (arrowHidden) |
| return; |
| |
| tooltipContent.style.setProperty('--arrow', onTop ? 'var(--arrow-up)' : 'var(--arrow-down)'); |
| tooltipContent.style.setProperty('--shadow-direction', onTop ? 'var(--shadow-up)' : 'var(--shadow-down)'); |
| tooltipContent.style.setProperty('--arrow-top', (onTop ? titleHeight : -arrowHalfWidth) + 'px'); |
| tooltipContent.style.setProperty('--arrow-left', (arrowX - boxX) + 'px'); |
| } |
| |
| function _drawRulers(context, bounds, rulerAtRight, rulerAtBottom) |
| { |
| context.save(); |
| var width = canvasWidth; |
| var height = canvasHeight; |
| context.strokeStyle = "rgba(128, 128, 128, 0.3)"; |
| context.lineWidth = 1; |
| context.translate(0.5, 0.5); |
| |
| if (rulerAtRight) { |
| for (var y in bounds.rightmostXForY) { |
| context.beginPath(); |
| context.moveTo(width, y); |
| context.lineTo(bounds.rightmostXForY[y], y); |
| context.stroke(); |
| } |
| } else { |
| for (var y in bounds.leftmostXForY) { |
| context.beginPath(); |
| context.moveTo(0, y); |
| context.lineTo(bounds.leftmostXForY[y], y); |
| context.stroke(); |
| } |
| } |
| |
| if (rulerAtBottom) { |
| for (var x in bounds.bottommostYForX) { |
| context.beginPath(); |
| context.moveTo(x, height); |
| context.lineTo(x, bounds.topmostYForX[x]); |
| context.stroke(); |
| } |
| } else { |
| for (var x in bounds.topmostYForX) { |
| context.beginPath(); |
| context.moveTo(x, 0); |
| context.lineTo(x, bounds.topmostYForX[x]); |
| context.stroke(); |
| } |
| } |
| |
| context.restore(); |
| } |
| |
| function buildPath(commands, bounds) { |
| var commandsIndex = 0; |
| |
| function extractPoints(count) |
| { |
| var points = []; |
| |
| for (var i = 0; i < count; ++i) { |
| var x = Math.round(commands[commandsIndex++] * emulationScaleFactor); |
| bounds.maxX = Math.max(bounds.maxX, x); |
| bounds.minX = Math.min(bounds.minX, x); |
| |
| var y = Math.round(commands[commandsIndex++] * emulationScaleFactor); |
| bounds.maxY = Math.max(bounds.maxY, y); |
| bounds.minY = Math.min(bounds.minY, y); |
| |
| bounds.leftmostXForY[y] = Math.min(bounds.leftmostXForY[y] || Number.MAX_VALUE, x); |
| bounds.rightmostXForY[y] = Math.max(bounds.rightmostXForY[y] || Number.MIN_VALUE, x); |
| bounds.topmostYForX[x] = Math.min(bounds.topmostYForX[x] || Number.MAX_VALUE, y); |
| bounds.bottommostYForX[x] = Math.max(bounds.bottommostYForX[x] || Number.MIN_VALUE, y); |
| points.push(x, y); |
| } |
| return points; |
| } |
| |
| var commandsLength = commands.length; |
| var path = new Path2D(); |
| while (commandsIndex < commandsLength) { |
| switch (commands[commandsIndex++]) { |
| case "M": |
| path.moveTo.apply(path, extractPoints(1)); |
| break; |
| case "L": |
| path.lineTo.apply(path, extractPoints(1)); |
| break; |
| case "C": |
| path.bezierCurveTo.apply(path, extractPoints(3)); |
| break; |
| case "Q": |
| path.quadraticCurveTo.apply(path, extractPoints(2)); |
| break; |
| case "Z": |
| path.closePath(); |
| break; |
| } |
| } |
| path.closePath(); |
| return path; |
| } |
| |
| function drawPath(context, commands, fillColor, outlineColor, bounds) |
| { |
| context.save(); |
| const path = buildPath(commands, bounds); |
| if (fillColor) { |
| context.fillStyle = fillColor; |
| context.fill(path); |
| } |
| if (outlineColor) { |
| context.lineWidth = 2; |
| context.strokeStyle = outlineColor; |
| context.stroke(path); |
| } |
| context.restore(); |
| return path; |
| } |
| |
| function emptyBounds() |
| { |
| var bounds = { |
| minX: Number.MAX_VALUE, |
| minY: Number.MAX_VALUE, |
| maxX: Number.MIN_VALUE, |
| maxY: Number.MIN_VALUE, |
| leftmostXForY: {}, |
| rightmostXForY: {}, |
| topmostYForX: {}, |
| bottommostYForX: {} |
| }; |
| return bounds; |
| } |
| |
| function _drawLayoutGridHighlight(highlight, context) |
| { |
| const rowPath = buildPath(highlight.rows, emptyBounds()); |
| const columnPath = buildPath(highlight.columns, emptyBounds()); |
| context.save(); |
| context.translate(0.5, 0.5); |
| context.setLineDash([3, 3]); |
| context.lineWidth = 0; |
| context.strokeStyle = highlight.color; |
| |
| context.save(); |
| context.clip(columnPath); |
| context.stroke(rowPath); |
| context.restore(); |
| |
| context.save(); |
| context.clip(rowPath); |
| context.stroke(columnPath); |
| context.restore(); |
| |
| context.restore(); |
| } |
| |
| function clipLayoutGridCells(highlight, context) { |
| // It may seem simpler to, before drawing the desired path, call context.clip() |
| // with the rows and then with the columns. However, the 2nd context.clip() call |
| // would try to find the intersection of the rows and columns, which is way too |
| // expensive if the grid is huge, e.g. a 1000x1000 grid has 1M cells. |
| // Therefore, it's better to draw the path first, set the globalCompositeOperation |
| // so that the existing canvas content is kept where it overlaps with new content, |
| // and then draw the rows and columns. |
| if (highlight.gridInfo) { |
| for (const grid of highlight.gridInfo) { |
| if (!grid.isPrimaryGrid) |
| continue; |
| context.save(); |
| context.globalCompositeOperation = "destination-in"; |
| drawPath(context, grid.rows, "red", null, emptyBounds()); |
| drawPath(context, grid.columns, "red", null, emptyBounds()); |
| context.restore(); |
| } |
| } |
| } |
| |
| function drawHighlight(highlight, context) |
| { |
| context = context || window.context; |
| context.save(); |
| |
| var bounds = emptyBounds(); |
| |
| for (var paths = highlight.paths.slice(); paths.length;) { |
| var path = paths.pop(); |
| context.save(); |
| drawPath(context, path.path, path.fillColor, path.outlineColor, bounds); |
| if (paths.length) { |
| context.globalCompositeOperation = "destination-out"; |
| drawPath(context, paths[paths.length - 1].path, "red", null, bounds); |
| } |
| // Clip content quad using the data grid cells info to create white stripes. |
| if (path.name === "content") |
| clipLayoutGridCells(highlight, context); |
| context.restore(); |
| } |
| context.restore(); |
| |
| context.save(); |
| |
| var rulerAtRight = highlight.paths.length && highlight.showRulers && bounds.minX < 20 && bounds.maxX + 20 < canvasWidth; |
| var rulerAtBottom = highlight.paths.length && highlight.showRulers && bounds.minY < 20 && bounds.maxY + 20 < canvasHeight; |
| |
| if (highlight.showRulers) |
| _drawAxis(context, rulerAtRight, rulerAtBottom); |
| |
| if (highlight.paths.length) { |
| if (highlight.showExtensionLines) |
| _drawRulers(context, bounds, rulerAtRight, rulerAtBottom); |
| |
| if (highlight.elementInfo) |
| _drawElementTitle(highlight.elementInfo, bounds); |
| } |
| if (highlight.gridInfo) { |
| for (var grid of highlight.gridInfo) |
| _drawLayoutGridHighlight(grid, context); |
| } |
| context.restore(); |
| |
| return { bounds: bounds }; |
| } |
| |
| function test() { |
| document.body.classList.add("platform-mac"); |
| reset(window); |
| drawHighlight( |
| {"paths":[{"path":["M",122,133.796875,"L",822,133.796875,"L",822,208.796875,"L",122,208.796875,"Z"], "fillColor":"rgba(111, 168, 220, 0.658823529411765)","name":"content"}, |
| {"path":["M",122,113.796875,"L",822,113.796875,"L",822,228.796875,"L",122,228.796875,"Z"],"fillColor":"rgba(246, 178, 107, 0.66)","name":"margin"}],"showRulers":false,"showExtensionLines":false, |
| "elementInfo":{"tagName":"button","className":"class.name", "idValue":"download-hero","nodeWidth":"700","nodeHeight":"75","style":{"color":"#FFFFFFFF","font-family":"\"Product Sans\", \"Open Sans\", Roboto, Arial, \"Product Sans\", \"Open Sans\", Roboto, Arial","font-size":"20px","line-height":"25px","padding":"0px","margin":"20px 0px","background-color":"#00000000"},"contrast":{"fontSize":"20px","fontWeight":"400","backgroundColor":"#F9B826BF"},"isKeyboardFocusable":false,"accessibleName":"name","accessibleRole":"role"}, showExtensionLines: true, showRulers: true}); |
| } |
| |
| </script> |
| </head> |
| <body class="fill"> |
| <canvas id="canvas" class="fill"></canvas> |
| <div id="tooltip-container"></div> |
| </body> |
| </html> |
