From 480869c3d1d820b344d23989d2deae64a594869e Mon Sep 17 00:00:00 2001 From: toasted-nutbread Date: Tue, 20 Sep 2022 21:06:39 -0400 Subject: Exclude documentElement from zoom calculation (#2227) * Exclude documentElement from zoom calculation * Add an option * Refactor zoom coordinate conversion functions * Convert zoom coordinates for text sources * Rename variable * Convert rect coordinate spaces * Handle shadow DOM --- ext/data/schemas/options-schema.json | 7 ++- ext/js/app/frontend.js | 1 + ext/js/app/popup.js | 58 ++++++++++++++++++++---- ext/js/data/options-util.js | 2 + ext/js/display/display.js | 2 + ext/js/dom/document-util.js | 87 +++++++++++++++++++++++++++--------- ext/js/dom/text-source-element.js | 5 ++- ext/js/dom/text-source-range.js | 4 +- ext/js/language/text-scanner.js | 10 ++++- ext/settings.html | 28 ++++++++++++ 10 files changed, 167 insertions(+), 37 deletions(-) (limited to 'ext') diff --git a/ext/data/schemas/options-schema.json b/ext/data/schemas/options-schema.json index 09398fb0..13bbbaec 100644 --- a/ext/data/schemas/options-schema.json +++ b/ext/data/schemas/options-schema.json @@ -438,7 +438,8 @@ "layoutAwareScan", "matchTypePrefix", "hidePopupOnCursorExit", - "hidePopupOnCursorExitDelay" + "hidePopupOnCursorExitDelay", + "normalizeCssZoom" ], "properties": { "inputs": { @@ -706,6 +707,10 @@ "type": "number", "minimum": 0, "default": 0 + }, + "normalizeCssZoom": { + "type": "boolean", + "default": true } } }, diff --git a/ext/js/app/frontend.js b/ext/js/app/frontend.js index f3b925c3..de3eb7fd 100644 --- a/ext/js/app/frontend.js +++ b/ext/js/app/frontend.js @@ -395,6 +395,7 @@ class Frontend { this._textScanner.setOptions({ inputs: scanningOptions.inputs, deepContentScan: scanningOptions.deepDomScan, + normalizeCssZoom: scanningOptions.normalizeCssZoom, selectText: scanningOptions.selectText, delay: scanningOptions.delay, touchInputEnabled: scanningOptions.touchInputEnabled, diff --git a/ext/js/app/popup.js b/ext/js/app/popup.js index 9ca2165d..8b62b92a 100644 --- a/ext/js/app/popup.js +++ b/ext/js/app/popup.js @@ -368,7 +368,7 @@ class Popup extends EventDispatcher { * `valid` is `false` for `PopupProxy`, since the DOM node is hosted in a different frame. */ getFrameRect() { - const {left, top, right, bottom} = this._frame.getBoundingClientRect(); + const {left, top, right, bottom} = this._getFrameBoundingClientRect(); return {left, top, right, bottom, valid: true}; } @@ -377,7 +377,7 @@ class Popup extends EventDispatcher { * @returns {Promise<{width: number, height: number, valid: boolean}>} The size and whether or not it is valid. */ async getFrameSize() { - const {width, height} = this._frame.getBoundingClientRect(); + const {width, height} = this._getFrameBoundingClientRect(); return {width, height, valid: true}; } @@ -680,12 +680,13 @@ class Popup extends EventDispatcher { * @returns {SizeRect} The calculated rectangle for where to position the popup. */ _getPosition(sourceRects, writingMode, viewport) { - const scale = this._contentScale; - const scaleRatio = this._frameSizeContentScale === null ? 1.0 : scale / this._frameSizeContentScale; - this._frameSizeContentScale = scale; + sourceRects = this._convertSourceRectsCoordinateSpace(sourceRects); + const contentScale = this._contentScale; + const scaleRatio = this._frameSizeContentScale === null ? 1.0 : contentScale / this._frameSizeContentScale; + this._frameSizeContentScale = contentScale; const frameRect = this._frame.getBoundingClientRect(); - const frameWidth = Math.max(frameRect.width * scaleRatio, this._initialWidth * scale); - const frameHeight = Math.max(frameRect.height * scaleRatio, this._initialHeight * scale); + const frameWidth = Math.max(frameRect.width * scaleRatio, this._initialWidth * contentScale); + const frameHeight = Math.max(frameRect.height * scaleRatio, this._initialHeight * contentScale); const horizontal = (writingMode === 'horizontal-tb' || this._verticalTextPosition === 'default'); let preferAfter; @@ -700,8 +701,8 @@ class Popup extends EventDispatcher { horizontalOffset = this._horizontalOffset2; verticalOffset = this._verticalOffset2; } - horizontalOffset *= scale; - verticalOffset *= scale; + horizontalOffset *= contentScale; + verticalOffset *= contentScale; let best = null; const sourceRectsLength = sourceRects.length; @@ -955,4 +956,43 @@ class Popup extends EventDispatcher { } return false; } + + /** + * Gets the bounding client rect for the frame element, with a coordinate conversion applied. + * @returns {DOMRect} The rectangle of the frame. + */ + _getFrameBoundingClientRect() { + return DocumentUtil.convertRectZoomCoordinates(this._frame.getBoundingClientRect(), this._container); + } + + /** + * Converts the coordinate space of source rectangles. + * @param {Rect[]} sourceRects The list of rectangles to convert. + * @returns {Rect[]} Either an updated list of rectangles, or `sourceRects` if no change is required. + */ + _convertSourceRectsCoordinateSpace(sourceRects) { + let scale = DocumentUtil.computeZoomScale(this._container); + if (scale === 1) { return sourceRects; } + scale = 1 / scale; + const sourceRects2 = []; + for (const rect of sourceRects) { + sourceRects2.push(this._createScaledRect(rect, scale)); + } + return sourceRects2; + } + + /** + * Creates a scaled rectangle. + * @param {Rect} rect The rectangle to scale. + * @param {number} scale The scale factor. + * @returns {Rect} A new rectangle which has been scaled. + */ + _createScaledRect(rect, scale) { + return { + left: rect.left * scale, + top: rect.top * scale, + right: rect.right * scale, + bottom: rect.bottom * scale + }; + } } diff --git a/ext/js/data/options-util.js b/ext/js/data/options-util.js index d2835adb..442007d0 100644 --- a/ext/js/data/options-util.js +++ b/ext/js/data/options-util.js @@ -980,10 +980,12 @@ class OptionsUtil { _updateVersion20(options) { // Version 20 changes: // Added anki.downloadTimeout. + // Added scanning.normalizeCssZoom. // Fixed general.popupTheme invalid default. // Fixed general.popupOuterTheme invalid default. for (const profile of options.profiles) { profile.options.anki.downloadTimeout = 0; + profile.options.scanning.normalizeCssZoom = true; const {general} = profile.options; if (general.popupTheme === 'default') { general.popupTheme = 'light'; diff --git a/ext/js/display/display.js b/ext/js/display/display.js index 8905d304..d286bd5e 100644 --- a/ext/js/display/display.js +++ b/ext/js/display/display.js @@ -367,6 +367,7 @@ class Display extends EventDispatcher { scanning: { inputs: scanningOptions.inputs, deepContentScan: scanningOptions.deepDomScan, + normalizeCssZoom: scanningOptions.normalizeCssZoom, selectText: scanningOptions.selectText, delay: scanningOptions.delay, touchInputEnabled: scanningOptions.touchInputEnabled, @@ -1532,6 +1533,7 @@ class Display extends EventDispatcher { } }], deepContentScan: scanningOptions.deepDomScan, + normalizeCssZoom: scanningOptions.normalizeCssZoom, selectText: false, delay: scanningOptions.delay, touchInputEnabled: false, diff --git a/ext/js/dom/document-util.js b/ext/js/dom/document-util.js index b974387e..41f44afe 100644 --- a/ext/js/dom/document-util.js +++ b/ext/js/dom/document-util.js @@ -24,10 +24,9 @@ class DocumentUtil { constructor() { this._transparentColorPattern = /rgba\s*\([^)]*,\s*0(?:\.0+)?\s*\)/; - this._cssZoomSupported = (typeof document.createElement('div').style.zoom === 'string'); } - getRangeFromPoint(x, y, deepContentScan) { + getRangeFromPoint(x, y, {deepContentScan, normalizeCssZoom}) { const elements = this._getElementsFromPoint(x, y, deepContentScan); let imposter = null; let imposterContainer = null; @@ -52,7 +51,7 @@ class DocumentUtil { } } - const range = this._caretRangeFromPointExt(x, y, deepContentScan ? elements : []); + const range = this._caretRangeFromPointExt(x, y, deepContentScan ? elements : [], normalizeCssZoom); if (range !== null) { if (imposter !== null) { this._setImposterStyle(imposterContainer.style, 'z-index', '-2147483646'); @@ -175,6 +174,60 @@ class DocumentUtil { }; } + /** + * Computes the scaling adjustment that is necessary for client space coordinates based on the + * CSS zoom level. + * @param {Node} node A node in the document. + * @returns {number} The scaling factor. + */ + static computeZoomScale(node) { + if (this._cssZoomSupported === null) { + this._cssZoomSupported = (typeof document.createElement('div').style.zoom === 'string'); + } + if (!this._cssZoomSupported) { return 1; } + // documentElement must be excluded because the computer style of its zoom property is inconsistent. + // * If CSS `:root{zoom:X;}` is specified, the computed zoom will always report `X`. + // * If CSS `:root{zoom:X;}` is not specified, the computed zoom report the browser's zoom level. + // Therefor, if CSS root zoom is specified as a value other than 1, the adjusted {x, y} values + // would be incorrect, which is not new behaviour. + let scale = 1; + const {ELEMENT_NODE, DOCUMENT_FRAGMENT_NODE} = Node; + const {documentElement} = document; + for (; node !== null && node !== documentElement; node = node.parentNode) { + const {nodeType} = node; + if (nodeType === DOCUMENT_FRAGMENT_NODE) { + const {host} = node; + if (typeof host !== 'undefined') { + node = host; + } + continue; + } else if (nodeType !== ELEMENT_NODE) { + continue; + } + let {zoom} = getComputedStyle(node); + if (typeof zoom !== 'string') { continue; } + zoom = Number.parseFloat(zoom); + if (!Number.isFinite(zoom) || zoom === 0) { continue; } + scale *= zoom; + } + return scale; + } + + static convertRectZoomCoordinates(rect, node) { + const scale = this.computeZoomScale(node); + return (scale === 1 ? rect : new DOMRect(rect.left * scale, rect.top * scale, rect.width * scale, rect.height * scale)); + } + + static convertMultipleRectZoomCoordinates(rects, node) { + const scale = this.computeZoomScale(node); + if (scale === 1) { return rects; } + const results = []; + for (const rect of rects) { + results.push(new DOMRect(rect.left * scale, rect.top * scale, rect.width * scale, rect.height * scale)); + } + return results; + } + static isPointInRect(x, y, rect) { return ( x >= rect.left && x < rect.right && @@ -435,7 +488,7 @@ class DocumentUtil { return e !== null ? [e] : []; } - _isPointInRange(x, y, range) { + _isPointInRange(x, y, range, normalizeCssZoom) { // Require a text node to start const {startContainer} = range; if (startContainer.nodeType !== Node.TEXT_NODE) { @@ -443,8 +496,10 @@ class DocumentUtil { } // Convert CSS zoom coordinates - if (this._cssZoomSupported) { - ({x, y} = this._convertCssZoomCoordinates(x, y, startContainer)); + if (normalizeCssZoom) { + const scale = DocumentUtil.computeZoomScale(startContainer); + x /= scale; + y /= scale; } // Scan forward @@ -583,7 +638,7 @@ class DocumentUtil { } } - _caretRangeFromPointExt(x, y, elements) { + _caretRangeFromPointExt(x, y, elements, normalizeCssZoom) { let previousStyles = null; try { let i = 0; @@ -596,7 +651,7 @@ class DocumentUtil { const startContainer = range.startContainer; if (startContinerPre !== startContainer) { - if (this._isPointInRange(x, y, range)) { + if (this._isPointInRange(x, y, range, normalizeCssZoom)) { return range; } startContinerPre = startContainer; @@ -668,18 +723,6 @@ class DocumentUtil { _isElementUserSelectAll(element) { return getComputedStyle(element).userSelect === 'all'; } - - _convertCssZoomCoordinates(x, y, node) { - const ELEMENT_NODE = Node.ELEMENT_NODE; - for (; node !== null; node = node.parentNode) { - if (node.nodeType !== ELEMENT_NODE) { continue; } - let {zoom} = getComputedStyle(node); - if (typeof zoom !== 'string') { continue; } - zoom = Number.parseFloat(zoom); - if (!Number.isFinite(zoom) || zoom === 0) { continue; } - x /= zoom; - y /= zoom; - } - return {x, y}; - } } +// eslint-disable-next-line no-underscore-dangle +DocumentUtil._cssZoomSupported = null; diff --git a/ext/js/dom/text-source-element.js b/ext/js/dom/text-source-element.js index fe3fe083..b5fc1683 100644 --- a/ext/js/dom/text-source-element.js +++ b/ext/js/dom/text-source-element.js @@ -16,6 +16,7 @@ */ /* global + * DocumentUtil * StringUtil */ @@ -95,11 +96,11 @@ class TextSourceElement { } getRect() { - return this._element.getBoundingClientRect(); + return DocumentUtil.convertRectZoomCoordinates(this._element.getBoundingClientRect(), this._element); } getRects() { - return this._element.getClientRects(); + return DocumentUtil.convertMultipleRectZoomCoordinates(this._element.getClientRects(), this._element); } getWritingMode() { diff --git a/ext/js/dom/text-source-range.js b/ext/js/dom/text-source-range.js index 5e3e814c..6c35c4cb 100644 --- a/ext/js/dom/text-source-range.js +++ b/ext/js/dom/text-source-range.js @@ -91,11 +91,11 @@ class TextSourceRange { } getRect() { - return this._range.getBoundingClientRect(); + return DocumentUtil.convertRectZoomCoordinates(this._range.getBoundingClientRect(), this._range.startContainer); } getRects() { - return this._range.getClientRects(); + return DocumentUtil.convertMultipleRectZoomCoordinates(this._range.getClientRects(), this._range.startContainer); } getWritingMode() { diff --git a/ext/js/language/text-scanner.js b/ext/js/language/text-scanner.js index 93de4dd4..3b8a8b47 100644 --- a/ext/js/language/text-scanner.js +++ b/ext/js/language/text-scanner.js @@ -54,6 +54,7 @@ class TextScanner extends EventDispatcher { this._selectionRestoreInfo = null; this._deepContentScan = false; + this._normalizeCssZoom = true; this._selectText = false; this._delay = 0; this._touchInputEnabled = false; @@ -151,6 +152,7 @@ class TextScanner extends EventDispatcher { setOptions({ inputs, deepContentScan, + normalizeCssZoom, selectText, delay, touchInputEnabled, @@ -167,6 +169,9 @@ class TextScanner extends EventDispatcher { if (typeof deepContentScan === 'boolean') { this._deepContentScan = deepContentScan; } + if (typeof normalizeCssZoom === 'boolean') { + this._normalizeCssZoom = normalizeCssZoom; + } if (typeof selectText === 'boolean') { this._selectText = selectText; } @@ -932,7 +937,10 @@ class TextScanner extends EventDispatcher { return; } - const textSource = this._documentUtil.getRangeFromPoint(x, y, this._deepContentScan); + const textSource = this._documentUtil.getRangeFromPoint(x, y, { + deepContentScan: this._deepContentScan, + normalizeCssZoom: this._normalizeCssZoom + }); try { await this._search(textSource, searchTerms, searchKanji, inputInfo); } finally { diff --git a/ext/settings.html b/ext/settings.html index 1a50a4b4..dc1405de 100644 --- a/ext/settings.html +++ b/ext/settings.html @@ -511,6 +511,34 @@ +
+
+
+
Normalize CSS zoom
+
+ Correct the pointer location on webpages where CSS zoom is used. + More… +
+
+
+ +
+
+ +
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