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refactor: create a util to compute container dimensions for bound text container (#5708)

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pull/5721/head
Aakansha Doshi 2 years ago committed by GitHub
parent 3a776f8795
commit 8636ef1017
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 78 additions and 56 deletions
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6
src/components/App.tsx
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@ -252,6 +252,7 @@ import {
getApproxMinLineHeight,
getApproxMinLineWidth,
getBoundTextElement,
getContainerDims,
} from "../element/textElement";
import { isHittingElementNotConsideringBoundingBox } from "../element/collision";
import {
@ -2385,8 +2386,9 @@ class App extends React.Component<AppProps, AppState> {
};
const minWidth = getApproxMinLineWidth(getFontString(fontString));
const minHeight = getApproxMinLineHeight(getFontString(fontString));
const newHeight = Math.max(container.height, minHeight);
const newWidth = Math.max(container.width, minWidth);
const containerDims = getContainerDims(container);
const newHeight = Math.max(containerDims.height, minHeight);
const newWidth = Math.max(containerDims.width, minWidth);
mutateElement(container, { height: newHeight, width: newWidth });
sceneX = container.x + newWidth / 2;
sceneY = container.y + newHeight / 2;

20
src/element/newElement.ts
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@ -21,7 +21,12 @@ import { AppState } from "../types";
import { getElementAbsoluteCoords } from ".";
import { adjustXYWithRotation } from "../math";
import { getResizedElementAbsoluteCoords } from "./bounds";
import { getContainerElement, measureText, wrapText } from "./textElement";
import {
getContainerDims,
getContainerElement,
measureText,
wrapText,
} from "./textElement";
import { BOUND_TEXT_PADDING, VERTICAL_ALIGN } from "../constants";
type ElementConstructorOpts = MarkOptional<
@ -164,7 +169,8 @@ const getAdjustedDimensions = (
let maxWidth = null;
const container = getContainerElement(element);
if (container) {
maxWidth = container.width - BOUND_TEXT_PADDING * 2;
const containerDims = getContainerDims(container);
maxWidth = containerDims.width - BOUND_TEXT_PADDING * 2;
}
const {
width: nextWidth,
@ -224,15 +230,16 @@ const getAdjustedDimensions = (
// make sure container dimensions are set properly when
// text editor overflows beyond viewport dimensions
if (container) {
let height = container.height;
let width = container.width;
const containerDims = getContainerDims(container);
let height = containerDims.height;
let width = containerDims.width;
if (nextHeight > height - BOUND_TEXT_PADDING * 2) {
height = nextHeight + BOUND_TEXT_PADDING * 2;
}
if (nextWidth > width - BOUND_TEXT_PADDING * 2) {
width = nextWidth + BOUND_TEXT_PADDING * 2;
}
if (height !== container.height || width !== container.width) {
if (height !== containerDims.height || width !== containerDims.width) {
mutateElement(container, { height, width });
}
}
@ -259,7 +266,8 @@ export const updateTextElement = (
): ExcalidrawTextElement => {
const container = getContainerElement(element);
if (container) {
text = wrapText(text, getFontString(element), container.width);
const containerDims = getContainerDims(container);
text = wrapText(text, getFontString(element), containerDims.width);
}
const dimensions = getAdjustedDimensions(element, text);
return newElementWith(element, {

24
src/element/textElement.ts
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@ -16,16 +16,16 @@ export const redrawTextBoundingBox = (
element: ExcalidrawTextElement,
container: ExcalidrawElement | null,
) => {
const maxWidth = container
? container.width - BOUND_TEXT_PADDING * 2
: undefined;
let maxWidth = undefined;
let text = element.text;
if (container) {
const containerDims = getContainerDims(container);
maxWidth = containerDims.width - BOUND_TEXT_PADDING * 2;
text = wrapText(
element.originalText,
getFontString(element),
container.width,
containerDims.width,
);
}
const metrics = measureText(
@ -37,16 +37,20 @@ export const redrawTextBoundingBox = (
let coordX = element.x;
// Resize container and vertically center align the text
if (container) {
let nextHeight = container.height;
const containerDims = getContainerDims(container);
let nextHeight = containerDims.height;
coordX = container.x + BOUND_TEXT_PADDING;
if (element.verticalAlign === VERTICAL_ALIGN.TOP) {
coordY = container.y + BOUND_TEXT_PADDING;
} else if (element.verticalAlign === VERTICAL_ALIGN.BOTTOM) {
coordY =
container.y + container.height - metrics.height - BOUND_TEXT_PADDING;
container.y +
containerDims.height -
metrics.height -
BOUND_TEXT_PADDING;
} else {
coordY = container.y + container.height / 2 - metrics.height / 2;
if (metrics.height > container.height - BOUND_TEXT_PADDING * 2) {
coordY = container.y + containerDims.height / 2 - metrics.height / 2;
if (metrics.height > containerDims.height - BOUND_TEXT_PADDING * 2) {
nextHeight = metrics.height + BOUND_TEXT_PADDING * 2;
coordY = container.y + nextHeight / 2 - metrics.height / 2;
}
@ -474,3 +478,7 @@ export const getContainerElement = (
}
return null;
};
export const getContainerDims = (element: ExcalidrawElement) => {
return { width: element.width, height: element.height };
};

84
src/element/textWysiwyg.tsx
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@ -18,6 +18,7 @@ import { mutateElement } from "./mutateElement";
import {
getApproxLineHeight,
getBoundTextElementId,
getContainerDims,
getContainerElement,
wrapText,
} from "./textElement";
@ -83,17 +84,17 @@ export const textWysiwyg = ({
app: App;
}) => {
const textPropertiesUpdated = (
updatedElement: ExcalidrawTextElement,
updatedTextElement: ExcalidrawTextElement,
editable: HTMLTextAreaElement,
) => {
const currentFont = editable.style.fontFamily.replace(/"/g, "");
if (
getFontFamilyString({ fontFamily: updatedElement.fontFamily }) !==
getFontFamilyString({ fontFamily: updatedTextElement.fontFamily }) !==
currentFont
) {
return true;
}
if (`${updatedElement.fontSize}px` !== editable.style.fontSize) {
if (`${updatedTextElement.fontSize}px` !== editable.style.fontSize) {
return true;
}
return false;
@ -102,46 +103,49 @@ export const textWysiwyg = ({
const updateWysiwygStyle = () => {
const appState = app.state;
const updatedElement =
const updatedTextElement =
Scene.getScene(element)?.getElement<ExcalidrawTextElement>(id);
if (!updatedElement) {
if (!updatedTextElement) {
return;
}
const { textAlign, verticalAlign } = updatedElement;
const { textAlign, verticalAlign } = updatedTextElement;
const approxLineHeight = getApproxLineHeight(getFontString(updatedElement));
if (updatedElement && isTextElement(updatedElement)) {
let coordX = updatedElement.x;
let coordY = updatedElement.y;
const container = getContainerElement(updatedElement);
let maxWidth = updatedElement.width;
let maxHeight = updatedElement.height;
let width = updatedElement.width;
const approxLineHeight = getApproxLineHeight(
getFontString(updatedTextElement),
);
if (updatedTextElement && isTextElement(updatedTextElement)) {
let coordX = updatedTextElement.x;
let coordY = updatedTextElement.y;
const container = getContainerElement(updatedTextElement);
let maxWidth = updatedTextElement.width;
let maxHeight = updatedTextElement.height;
let width = updatedTextElement.width;
// Set to element height by default since that's
// what is going to be used for unbounded text
let height = updatedElement.height;
if (container && updatedElement.containerId) {
let height = updatedTextElement.height;
if (container && updatedTextElement.containerId) {
const propertiesUpdated = textPropertiesUpdated(
updatedElement,
updatedTextElement,
editable,
);
const containerDims = getContainerDims(container);
// using editor.style.height to get the accurate height of text editor
const editorHeight = Number(editable.style.height.slice(0, -2));
if (editorHeight > 0) {
height = editorHeight;
}
if (propertiesUpdated) {
originalContainerHeight = container.height;
originalContainerHeight = containerDims.height;
// update height of the editor after properties updated
height = updatedElement.height;
height = updatedTextElement.height;
}
if (!originalContainerHeight) {
originalContainerHeight = container.height;
originalContainerHeight = containerDims.height;
}
maxWidth = container.width - BOUND_TEXT_PADDING * 2;
maxHeight = container.height - BOUND_TEXT_PADDING * 2;
maxWidth = containerDims.width - BOUND_TEXT_PADDING * 2;
maxHeight = containerDims.height - BOUND_TEXT_PADDING * 2;
width = maxWidth;
// The coordinates of text box set a distance of
// 5px to preserve padding
@ -149,27 +153,27 @@ export const textWysiwyg = ({
// autogrow container height if text exceeds
if (height > maxHeight) {
const diff = Math.min(height - maxHeight, approxLineHeight);
mutateElement(container, { height: container.height + diff });
mutateElement(container, { height: containerDims.height + diff });
return;
} else if (
// autoshrink container height until original container height
// is reached when text is removed
container.height > originalContainerHeight &&
containerDims.height > originalContainerHeight &&
height < maxHeight
) {
const diff = Math.min(maxHeight - height, approxLineHeight);
mutateElement(container, { height: container.height - diff });
mutateElement(container, { height: containerDims.height - diff });
}
// Start pushing text upward until a diff of 30px (padding)
// is reached
else {
// vertically center align the text
if (verticalAlign === VERTICAL_ALIGN.MIDDLE) {
coordY = container.y + container.height / 2 - height / 2;
coordY = container.y + containerDims.height / 2 - height / 2;
}
if (verticalAlign === VERTICAL_ALIGN.BOTTOM) {
coordY =
container.y + container.height - height - BOUND_TEXT_PADDING;
container.y + containerDims.height - height - BOUND_TEXT_PADDING;
}
}
}
@ -177,7 +181,7 @@ export const textWysiwyg = ({
const initialSelectionStart = editable.selectionStart;
const initialSelectionEnd = editable.selectionEnd;
const initialLength = editable.value.length;
editable.value = updatedElement.originalText;
editable.value = updatedTextElement.originalText;
// restore cursor position after value updated so it doesn't
// go to the end of text when container auto expanded
@ -192,10 +196,10 @@ export const textWysiwyg = ({
editable.selectionEnd = editable.value.length - diff;
}
const lines = updatedElement.originalText.split("\n");
const lineHeight = updatedElement.containerId
const lines = updatedTextElement.originalText.split("\n");
const lineHeight = updatedTextElement.containerId
? approxLineHeight
: updatedElement.height / lines.length;
: updatedTextElement.height / lines.length;
if (!container) {
maxWidth = (appState.width - 8 - viewportX) / appState.zoom.value;
}
@ -203,9 +207,9 @@ export const textWysiwyg = ({
// Make sure text editor height doesn't go beyond viewport
const editorMaxHeight =
(appState.height - viewportY) / appState.zoom.value;
const angle = container ? container.angle : updatedElement.angle;
const angle = container ? container.angle : updatedTextElement.angle;
Object.assign(editable.style, {
font: getFontString(updatedElement),
font: getFontString(updatedTextElement),
// must be defined *after* font ¯\_(ツ)_/¯
lineHeight: `${lineHeight}px`,
width: `${width}px`,
@ -222,8 +226,8 @@ export const textWysiwyg = ({
),
textAlign,
verticalAlign,
color: updatedElement.strokeColor,
opacity: updatedElement.opacity / 100,
color: updatedTextElement.strokeColor,
opacity: updatedTextElement.opacity / 100,
filter: "var(--theme-filter)",
maxWidth: `${maxWidth}px`,
maxHeight: `${editorMaxHeight}px`,
@ -231,9 +235,9 @@ export const textWysiwyg = ({
// For some reason updating font attribute doesn't set font family
// hence updating font family explicitly for test environment
if (isTestEnv()) {
editable.style.fontFamily = getFontFamilyString(updatedElement);
editable.style.fontFamily = getFontFamilyString(updatedTextElement);
}
mutateElement(updatedElement, { x: coordX, y: coordY });
mutateElement(updatedTextElement, { x: coordX, y: coordY });
}
};
@ -276,10 +280,10 @@ export const textWysiwyg = ({
if (onChange) {
editable.oninput = () => {
const updatedElement = Scene.getScene(element)?.getElement(
const updatedTextElement = Scene.getScene(element)?.getElement(
id,
) as ExcalidrawTextElement;
const font = getFontString(updatedElement);
const font = getFontString(updatedTextElement);
// using scrollHeight here since we need to calculate
// number of lines so cannot use editable.style.height
// as that gets updated below

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