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perf(ios): gridlayout optimizations #10582

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5138553
constant variables and helper functions added to increase efficiency,…
SeanKelly369 Jul 11, 2024
6575bab
grid-layout example improvement - varied col and row size settings
SeanKelly369 Jul 11, 2024
e05d8f9
Merge branch 'main' into origin/feat/grid-layout-ios-optimisation
SeanKelly369 Jul 11, 2024
6a4d73c
Merge branch 'main' into origin/feat/grid-layout-ios-optimisation
NathanWalker Jul 12, 2024
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38 changes: 38 additions & 0 deletions apps/ui/src/grid-layout/grid-layout-page.ts
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Original file line number Diff line number Diff line change
@@ -0,0 +1,38 @@
import { EventData, GestureStateTypes, PanGestureEventData, Page, View, ScrollView, GridLayout } from '@nativescript/core';

var page;
export function pageLoaded(args: EventData) {
page = <Page>args.object;
}

let currentDeltaY = 0;
export function panLayout(args: PanGestureEventData) {
const view = <View>args.object;
const scrollView = <ScrollView>view.parent;

if (args.state === GestureStateTypes.began) {
currentDeltaY = 0;
scrollView.isScrollEnabled = false;
} else if (args.state === GestureStateTypes.changed) {
const diff = args.deltaY - currentDeltaY;
view.translateY += diff;
currentDeltaY = args.deltaY;
} else if (args.state === GestureStateTypes.ended) {
scrollView.isScrollEnabled = true;
}
}

let isShowingGridLayout: boolean = true;

export function showHide() {
let gridContainer = page.getViewById('grid-container');
isShowingGridLayout = !isShowingGridLayout;

if (!isShowingGridLayout) {
console.info('hiding grid');
gridContainer.visibility = 'hidden';
} else {
console.info('showing grid');
gridContainer.visibility = 'visible';
}
}
79 changes: 79 additions & 0 deletions apps/ui/src/grid-layout/grid-layout-page.xml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,79 @@
<Page xmlns="http://schemas.nativescript.org/tns.xsd" loaded="pageLoaded" class="page">
<ScrollView id="grid-layout" height="100%">
<GridLayout height="80%" backgroundColor="red" rows="auto auto">
<StackLayout backgroundColor="green">
<Button backgroundColor="mediumblue" color="#fff" height="42" width="170" fontSize="20" tap="showHide" text="Toggle Show/Hide"></Button>
</StackLayout>
<StackLayout row="1">
<GridLayout id="grid-container" columns="* auto * 45 * * *" rows="* auto 50" height="400">
<StackLayout col="0" row="0" backgroundColor='maroon'>
<Label text="TNT" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="1" row="0" backgroundColor="blue">
<Label text="DAM" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="2" row="0" backgroundColor="salmon">
<Label text="BAR" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="3" row="0" backgroundColor="olive">
<Label text="OLD" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="4" row="0" backgroundColor="cyan">
<Label text="OUR" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="5" row="0" backgroundColor="darkcyan">
<Label text="THE" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="6" row="0" backgroundColor="limegreen">
<Label text="PER" color="#fff" fontSize="22"/>
</StackLayout>

<StackLayout col="0" row="1" backgroundColor='sandybrown'>
<Label text="ROW" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="1" row="1" backgroundColor="teal">
<Label text="WIP" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="2" row="1" backgroundColor="salmon">
<Label text="HIP" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="3" row="1" backgroundColor="sienna">
<Label text="LIP" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="4" row="1" backgroundColor="red">
<Label text="SON" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="5" row="1" backgroundColor="darkcyan">
<Label text="MOO" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="6" row="1" backgroundColor="purple">
<Label text="DID" color="#fff" fontSize="22"/>
</StackLayout>

<StackLayout col="0" row="2" backgroundColor='silver'>
<Label text="VID" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="1" row="2" backgroundColor="peru">
<Label text="FOR" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="2" row="2" backgroundColor="seagreen">
<Label text="LOB" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="3" row="2" backgroundColor="olivedrab">
<Label text="MIN" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="4" row="2" backgroundColor="orchid">
<Label text="BIN" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="5" row="2" backgroundColor="orangered">
<Label text="END" color="#fff" fontSize="22"/>
</StackLayout>
<StackLayout col="6" row="2" backgroundColor="navy">
<Label text="ACE" color="#fff" fontSize="22"/>
</StackLayout>

</GridLayout>
</StackLayout>
</GridLayout>
</ScrollView>
</Page>
1 change: 1 addition & 0 deletions apps/ui/src/main-page.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,7 @@ export function pageLoaded(args: EventData) {
examples.set('nested-frames', 'nested-frames/main-page');
examples.set('media-queries', 'media-queries/main-page');
examples.set('screen-qualifiers', 'screen-qualifiers/main-page');
examples.set('grid-layout', 'grid-layout/grid-layout-page');
page.bindingContext = new MainPageViewModel(wrapLayout, examples);

const parent = page.getViewById('parentLayout');
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147 changes: 75 additions & 72 deletions packages/core/ui/layouts/grid-layout/index.ios.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -410,54 +410,61 @@ class MeasureHelper {
}

public addMeasureSpec(measureSpec: MeasureSpecs): void {
// Get column stats
let size = measureSpec.getColumnIndex() + measureSpec.getColumnSpan();
for (let i = measureSpec.getColumnIndex(); i < size; i++) {
const columnGroup: ItemGroup = this.columns[i];
if (columnGroup.getIsAuto()) {
measureSpec.autoColumnsCount++;
} else if (columnGroup.getIsStar()) {
measureSpec.starColumnsCount += columnGroup.rowOrColumn.value;
} else if (columnGroup.getIsAbsolute()) {
measureSpec.pixelWidth += layout.toDevicePixels(columnGroup.rowOrColumn.value);
const columnIndex = measureSpec.getColumnIndex();
const rowIndex = measureSpec.getRowIndex();
const columnSpan = measureSpec.getColumnSpan();
const rowSpan = measureSpec.getRowSpan();

const updateMeasureSpecCounts = (group: ItemGroup, measureSpec: MeasureSpecs, isColumn: boolean) => {
if (group.getIsAuto()) {
isColumn ? measureSpec.autoColumnsCount++ : measureSpec.autoRowsCount++;
} else if (group.getIsStar()) {
if (isColumn) {
measureSpec.starColumnsCount += group.rowOrColumn.value;
} else {
measureSpec.starRowsCount += group.rowOrColumn.value;
}
} else if (group.getIsAbsolute()) {
if (isColumn) {
measureSpec.pixelWidth += layout.toDevicePixels(group.rowOrColumn.value);
} else {
measureSpec.pixelHeight += layout.toDevicePixels(group.rowOrColumn.value);
}
}
}
};

if (measureSpec.autoColumnsCount > 0 && measureSpec.starColumnsCount === 0) {
// Determine which auto columns are affected by this element
for (let i = measureSpec.getColumnIndex(); i < size; i++) {
const columnGroup: ItemGroup = this.columns[i];
if (columnGroup.getIsAuto()) {
columnGroup.measureToFix++;
const updateAutoGroups = (index: number, size: number, groups: ItemGroup[], measureSpec: MeasureSpecs, isColumn: boolean) => {
for (let i = index; i < size; i++) {
const group: ItemGroup = groups[i];
if (group.getIsAuto()) {
group.measureToFix++;
}
}
};

// Process columns
let size = columnIndex + columnSpan;
for (let i = columnIndex; i < size; i++) {
updateMeasureSpecCounts(this.columns[i], measureSpec, true);
}

// Get row stats
size = measureSpec.getRowIndex() + measureSpec.getRowSpan();
for (let i = measureSpec.getRowIndex(); i < size; i++) {
const rowGroup: ItemGroup = this.rows[i];
if (rowGroup.getIsAuto()) {
measureSpec.autoRowsCount++;
} else if (rowGroup.getIsStar()) {
measureSpec.starRowsCount += rowGroup.rowOrColumn.value;
} else if (rowGroup.getIsAbsolute()) {
measureSpec.pixelHeight += layout.toDevicePixels(rowGroup.rowOrColumn.value);
}
if (measureSpec.autoColumnsCount > 0 && measureSpec.starColumnsCount === 0) {
updateAutoGroups(columnIndex, size, this.columns, measureSpec, true);
}

// Process rows
size = rowIndex + rowSpan;
for (let i = rowIndex; i < size; i++) {
updateMeasureSpecCounts(this.rows[i], measureSpec, false);
}

if (measureSpec.autoRowsCount > 0 && measureSpec.starRowsCount === 0) {
// Determine which auto rows are affected by this element
for (let i = measureSpec.getRowIndex(); i < size; i++) {
const rowGroup: ItemGroup = this.rows[i];
if (rowGroup.getIsAuto()) {
rowGroup.measureToFix++;
}
}
updateAutoGroups(rowIndex, size, this.rows, measureSpec, false);
}

this.columns[measureSpec.getColumnIndex()].children.push(measureSpec);
this.rows[measureSpec.getRowIndex()].children.push(measureSpec);
// Add measureSpec to children
this.columns[columnIndex].children.push(measureSpec);
this.rows[rowIndex].children.push(measureSpec);
}

public clearMeasureSpecs(): void {
Expand All @@ -479,25 +486,25 @@ class MeasureHelper {
}

init(): void {
const rows = this.rows.length;
if (rows === 0) {
this.singleRowGroup.setIsLengthInfinity(this.infinityHeight);
this.rows.push(this.singleRowGroup);
this.fakeRowAdded = true;
} else if (rows > 1 && this.fakeRowAdded) {
this.rows.splice(0, 1);
this.fakeRowAdded = false;
}

const cols = this.columns.length;
if (cols === 0) {
this.fakeColumnAdded = true;
this.singleColumnGroup.setIsLengthInfinity(this.infinityWidth);
this.columns.push(this.singleColumnGroup);
} else if (cols > 1 && this.fakeColumnAdded) {
this.columns.splice(0, 1);
this.fakeColumnAdded = false;
}
const handleSingleGroup = (groups: ItemGroup[], singleGroup: ItemGroup, infinityLength: boolean, fakeGroupAdded: boolean, setFakeGroupAdded: (value: boolean) => void): void => {
const length = groups.length;
if (length === 0) {
singleGroup.setIsLengthInfinity(infinityLength);
groups.push(singleGroup);
setFakeGroupAdded(true);
} else if (length > 1 && fakeGroupAdded) {
groups.splice(0, 1);
setFakeGroupAdded(false);
}
};

handleSingleGroup(this.rows, this.singleRowGroup, this.infinityHeight, this.fakeRowAdded, (value) => {
this.fakeRowAdded = value;
});

handleSingleGroup(this.columns, this.singleColumnGroup, this.infinityWidth, this.fakeColumnAdded, (value) => {
this.fakeColumnAdded = value;
});

MeasureHelper.initList(this.rows);
MeasureHelper.initList(this.columns);
Expand All @@ -515,25 +522,21 @@ class MeasureHelper {
measureSpec.measured = true;
}

if (measureSpec.autoColumnsCount > 0 && measureSpec.starColumnsCount === 0) {
const size = measureSpec.getColumnIndex() + measureSpec.getColumnSpan();
for (let i = measureSpec.getColumnIndex(); i < size; i++) {
const columnGroup: ItemGroup = this.columns[i];
if (columnGroup.getIsAuto()) {
columnGroup.currentMeasureToFixCount++;
const updateCurrentMeasureToFixCount = (index: number, span: number, groups: ItemGroup[], autoCount: number, starCount: number) => {
if (autoCount > 0 && starCount === 0) {
const size = index + span;
for (let i = index; i < size; i++) {
const group = groups[i];
if (group.getIsAuto()) {
group.currentMeasureToFixCount++;
}
}
}
}
};

if (measureSpec.autoRowsCount > 0 && measureSpec.starRowsCount === 0) {
const size = measureSpec.getRowIndex() + measureSpec.getRowSpan();
for (let i = measureSpec.getRowIndex(); i < size; i++) {
const rowGroup: ItemGroup = this.rows[i];
if (rowGroup.getIsAuto()) {
rowGroup.currentMeasureToFixCount++;
}
}
}
updateCurrentMeasureToFixCount(measureSpec.getColumnIndex(), measureSpec.getColumnSpan(), this.columns, measureSpec.autoColumnsCount, measureSpec.starColumnsCount);

updateCurrentMeasureToFixCount(measureSpec.getRowIndex(), measureSpec.getRowSpan(), this.rows, measureSpec.autoRowsCount, measureSpec.starRowsCount);
}

private fixColumns(): void {
Expand Down