mirror of
https://github.com/react/react-native-devtools-frontend.git
synced 2026-10-11 22:24:37 +08:00
Changhao Han
097956ebb5
Currently the Computed Styles pane renders several hundreds of computed styles in a single cycle, which means creating, appending, layout-out, rendering, and painting hundreds of heavily styled <li> items that contains widgets and children. This can create a visual lag ranging from ~100ms to ~1s. This CL breaks down these operations into smaller batches, and queues them using browser's requestIdleCallback to provide an instant rendering feedback. tracing before: https://chromedevtools.github.io/timeline-viewer/?loadTimelineFromURL=https://gist.githubusercontent.com/hanselfmu/424153ea140df049800e716031882238/raw/c62f1561cf4f56c1c5c869325015f3d99ab65637/computed_tab_perf_before.json tracing after: https://chromedevtools.github.io/timeline-viewer/?loadTimelineFromURL=https://gist.github.com/hanselfmu/5fdc43d3ae878aed82e79ff3af3c1ed6/raw/7d5095dfde0236eccafe53ec0fb22356e303afb9/computed_tab_perf_after.json Bug: chromium:1100148, chromium:1106251, chromium:1093263 Change-Id: Id0acbf91542280b026fdb67e28097bdb445606ea Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2308547 Commit-Queue: Changhao Han <changhaohan@chromium.org> Reviewed-by: Alex Rudenko <alexrudenko@chromium.org> Reviewed-by: Mathias Bynens <mathias@chromium.org>
159 lines
3.0 KiB
CSS
159 lines
3.0 KiB
CSS
/*
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* Copyright (c) 2017 The Chromium Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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.computed-style-property {
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overflow: hidden;
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flex: auto;
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text-overflow: ellipsis;
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}
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.computed-style-property .property-name {
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width: 16em;
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text-overflow: ellipsis;
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overflow: hidden;
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max-width: 52%;
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display: inline-block;
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vertical-align: text-top;
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}
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.computed-style-property .property-value {
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margin-left: 2em;
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position: relative;
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}
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.computed-style-property .property-value-text {
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overflow: hidden;
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text-overflow: ellipsis;
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}
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.goto-source-icon {
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background-color: #5a5a5a;
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display: none;
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position: absolute;
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left: -16px;
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top: 0;
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}
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.goto-source-icon:hover {
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background-color: #333;
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}
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.tree-outline li:hover .goto-source-icon {
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display: block;
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margin-top: -2px;
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}
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.computed-style-property-inherited {
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opacity: 50%;
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}
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.trace-link {
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user-select: none;
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float: right;
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padding-left: 1em;
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position: relative;
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z-index: 1;
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}
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.property-trace {
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text-overflow: ellipsis;
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overflow: hidden;
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flex-grow: 1;
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}
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.property-trace-selector {
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color: gray;
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padding-left: 2em;
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}
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.property-trace-value {
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position: relative;
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display: inline-block;
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margin-left: 16px;
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}
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.property-trace-inactive .property-trace-value::before {
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position: absolute;
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content: ".";
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border-bottom: 1px solid rgb(0 0 0 / 35%);
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top: 0;
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bottom: 5px;
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left: 0;
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right: 0;
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}
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.tree-outline li.even-row {
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position: relative;
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background-color: #f5f5f5;
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}
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.tree-outline,
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.tree-outline ol {
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padding-left: 0;
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}
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.tree-outline li:hover {
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background-color: rgb(235 242 252);
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cursor: pointer;
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}
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.tree-outline li::before {
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margin-left: 4px;
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}
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.delimiter {
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color: transparent;
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}
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.delimiter::selection {
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color: transparent;
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}
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.computed-narrow .computed-style-property .property-name,
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.computed-narrow .computed-style-property .property-value {
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display: inline-block;
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width: 100%;
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max-width: 100%;
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margin-left: 0;
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white-space: nowrap;
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}
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.computed-narrow .computed-style-property {
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padding: 2px 0;
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display: block;
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white-space: normal;
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}
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.computed-narrow.tree-outline li::before {
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margin-top: -14px;
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}
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@media (forced-colors: active) {
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.computed-style-property-inherited {
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opacity: 100%;
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}
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:host-context(.monospace.computed-properties) .tree-outline li:hover {
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forced-color-adjust: none;
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background-color: Highlight;
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}
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:host-context(.monospace.computed-properties) .tree-outline:not(.hide-selection-when-blurred) li.parent:hover.selected::before,
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:host-context(.monospace.computed-properties) .tree-outline-disclosure li.parent:hover::before,
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:host-context(.monospace.computed-properties) .tree-outline li:hover .goto-source-icon {
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background-color: HighlightText;
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}
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:host-context(.monospace.computed-properties) .tree-outline li:hover * {
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color: HighlightText;
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}
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.property-trace-inactive .property-trace-value::before {
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content: "";
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border-bottom-color: HighlightText !important;
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}
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}
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