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feat: update renderConfig to move and scale content

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Arnošt Pleskot 2023-08-10 21:19:19 +02:00
parent 70c7185f32
commit c731bd13b6
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2 changed files with 111 additions and 32 deletions
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99
src/scene/fancyBackground.ts
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@ -1,7 +1,12 @@
import { FANCY_BG_BORDER_RADIUS, FANCY_BG_PADDING } from "../constants";
import {
DEFAULT_EXPORT_PADDING,
FANCY_BG_BORDER_RADIUS,
FANCY_BG_PADDING,
} from "../constants";
import { loadHTMLImageElement } from "../element/image";
import { roundRect } from "../renderer/roundRect";
import { DataURL } from "../types";
import { RenderConfig } from "./types";
type Dimensions = { w: number; h: number };
@ -25,23 +30,35 @@ const getScaleToFit = (contentSize: Dimensions, containerSize: Dimensions) => {
const addImageBackground = (
context: CanvasRenderingContext2D,
canvasWidth: number,
canvasHeight: number,
canvasDimensions: Dimensions,
fancyBackgroundImage: HTMLImageElement,
) => {
context.save();
context.beginPath();
if (context.roundRect) {
context.roundRect(0, 0, canvasWidth, canvasHeight, FANCY_BG_BORDER_RADIUS);
context.roundRect(
0,
0,
canvasDimensions.w,
canvasDimensions.h,
FANCY_BG_BORDER_RADIUS,
);
} else {
roundRect(context, 0, 0, canvasWidth, canvasHeight, FANCY_BG_BORDER_RADIUS);
roundRect(
context,
0,
0,
canvasDimensions.w,
canvasDimensions.h,
FANCY_BG_BORDER_RADIUS,
);
}
const scale = getScaleToFill(
{ w: fancyBackgroundImage.width, h: fancyBackgroundImage.height },
{ w: canvasWidth, h: canvasHeight },
{ w: canvasDimensions.w, h: canvasDimensions.h },
);
const x = (canvasWidth - fancyBackgroundImage.width * scale) / 2;
const y = (canvasHeight - fancyBackgroundImage.height * scale) / 2;
const x = (canvasDimensions.w - fancyBackgroundImage.width * scale) / 2;
const y = (canvasDimensions.h - fancyBackgroundImage.height * scale) / 2;
context.clip();
context.drawImage(
fancyBackgroundImage,
@ -56,8 +73,7 @@ const addImageBackground = (
const addContentBackground = (
context: CanvasRenderingContext2D,
canvasWidth: number,
canvasHeight: number,
normalizedDimensions: Dimensions,
contentBackgroundColor: string,
) => {
const shadows = [
@ -94,8 +110,8 @@ const addContentBackground = (
context.roundRect(
FANCY_BG_PADDING,
FANCY_BG_PADDING,
canvasWidth - FANCY_BG_PADDING * 2,
canvasHeight - FANCY_BG_PADDING * 2,
normalizedDimensions.w - FANCY_BG_PADDING * 2,
normalizedDimensions.h - FANCY_BG_PADDING * 2,
FANCY_BG_BORDER_RADIUS,
);
} else {
@ -103,8 +119,8 @@ const addContentBackground = (
context,
FANCY_BG_PADDING,
FANCY_BG_PADDING,
canvasWidth - FANCY_BG_PADDING * 2,
canvasHeight - FANCY_BG_PADDING * 2,
normalizedDimensions.w - FANCY_BG_PADDING * 2,
normalizedDimensions.h - FANCY_BG_PADDING * 2,
FANCY_BG_BORDER_RADIUS,
);
}
@ -118,23 +134,54 @@ const addContentBackground = (
});
};
export const applyFancyBackground = async (
canvas: HTMLCanvasElement,
fancyBackgroundImageUrl: DataURL,
backgroundColor: string,
) => {
const updateRenderConfig = (
renderConfig: RenderConfig,
canvasDimensions: Dimensions,
): { scale: number; renderConfig: RenderConfig } => {
const totalPadding =
FANCY_BG_PADDING + FANCY_BG_BORDER_RADIUS + DEFAULT_EXPORT_PADDING;
return {
renderConfig: {
...renderConfig,
scrollX: renderConfig.scrollX + totalPadding,
scrollY: renderConfig.scrollY + totalPadding,
},
scale: getScaleToFit(canvasDimensions, {
w: canvasDimensions.w - totalPadding * 2,
h: canvasDimensions.h - totalPadding * 2,
}),
};
};
export const applyFancyBackground = async ({
canvas,
fancyBackgroundImageUrl,
backgroundColor,
renderConfig,
}: {
canvas: HTMLCanvasElement;
fancyBackgroundImageUrl: DataURL;
backgroundColor: string;
scale: number;
renderConfig: RenderConfig;
}) => {
const context = canvas.getContext("2d")!;
const fancyBackgroundImage = await loadHTMLImageElement(
fancyBackgroundImageUrl,
);
addImageBackground(
context,
canvas.width,
canvas.height,
fancyBackgroundImage,
);
const canvasDimensions: Dimensions = { w: canvas.width, h: canvas.height };
addContentBackground(context, canvas.width, canvas.height, backgroundColor);
// const normalizedDimensions: Dimensions = {
// w: canvas.width / scale,
// h: canvas.height / scale,
// };
addImageBackground(context, canvasDimensions, fancyBackgroundImage);
addContentBackground(context, canvasDimensions, backgroundColor);
return updateRenderConfig(renderConfig, canvasDimensions);
};