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/* eslint key-spacing: ["error", { "align": "value" }] */
import { Jimp, getTestDir, hasOwnProp } from "@jimp/test-utils";
import configure from "@jimp/custom";
import blit from "@jimp/plugin-blit";
import expect from "@storybook/expect";
import print from "../src";
const jimp = configure({ plugins: [print, blit] }, Jimp);
async function createTextImage(
width,
height,
font,
{ x = 0, y = 0, text, maxWidth, maxHeight }
) {
const loadedFont = await jimp.loadFont(font);
const image = await Jimp.create(width, height, 0xffffffff);
return image.print(loadedFont, x, y, text, maxWidth, maxHeight);
}
describe("Write text over image", function () {
this.timeout(30000);
const fontDefs = {
SANS_8_BLACK: { w: 28, h: 28, bg: 0xffffffff },
SANS_16_BLACK: { w: 54, h: 54, bg: 0xffffffff },
SANS_32_BLACK: { w: 114, h: 114, bg: 0xffffffff },
SANS_64_BLACK: { w: 220, h: 220, bg: 0xffffffff },
SANS_8_WHITE: { w: 28, h: 28, bg: 0x000000ff },
SANS_16_WHITE: { w: 54, h: 54, bg: 0x000000ff },
SANS_32_WHITE: { w: 114, h: 114, bg: 0x000000ff },
SANS_64_WHITE: { w: 220, h: 220, bg: 0x000000ff },
};
for (const fontName in fontDefs)
if (hasOwnProp(fontDefs, fontName))
((fontName, conf) => {
it("Jimp preset " + fontName + " bitmap font", async () => {
const font = await jimp.loadFont(Jimp["FONT_" + fontName]);
const expected =
getTestDir(__dirname) + "/images/" + fontName + ".png";
const expectedImg = await Jimp.read(expected);
const image = await Jimp.create(conf.w, conf.h, conf.bg);
expect(
image.print(font, 0, 0, "This is only a test.", image.bitmap.width)
.bitmap.data
).toEqual(expectedImg.bitmap.data);
});
})(fontName, fontDefs[fontName]);
it("Jimp preset SANS_16_BLACK bitmap font positioned", async () => {
const font = await jimp.loadFont(Jimp.FONT_SANS_16_BLACK);
const expected =
getTestDir(__dirname) + "/images/SANS_16_BLACK-positioned.png";
const expectedImg = await Jimp.read(expected);
const image = await Jimp.create("300", "100", 0xff8800ff);
expect(
image.print(font, 150, 50, "This is only a test.", 100).bitmap.data
).toEqual(expectedImg.bitmap.data);
});
it("Jimp loads font from URL", async () => {
const font = await Jimp.loadFont(
"https://raw.githubusercontent.com/jimp-dev/jimp/main/packages/plugin-print/fonts/open-sans/open-sans-16-black/open-sans-16-black.fnt"
);
const expected =
getTestDir(__dirname) + "/images/SANS_16_BLACK-positioned.png";
const expectedImg = await Jimp.read(expected);
const image = await Jimp.create("300", "100", 0xff8800ff);
expect(
image.print(font, 150, 50, "This is only a test.", 100).bitmap.data
).toEqual(expectedImg.bitmap.data);
});
it("Jimp renders ? for unknown characters", async () => {
const font = await jimp.loadFont(Jimp.FONT_SANS_16_BLACK);
const expected = getTestDir(__dirname) + "/images/unknown-char-test.png";
const expectedImg = await Jimp.read(expected);
const image = await Jimp.read("300", "100", 0xff8800ff);
expect(image.print(font, 0, 0, "ツ ツ ツ", 100).bitmap.data).toEqual(
expectedImg.bitmap.data
);
});
it("Jimp can print numbers too", async () => {
const font = await Jimp.loadFont(Jimp.FONT_SANS_16_BLACK);
const expected = getTestDir(__dirname) + "/images/print-number.png";
const expectedImg = await Jimp.read(expected);
const image = await Jimp.read("300", "100", 0xff8800ff);
expect(image.print(font, 0, 0, 12345678, 100).bitmap.data).toEqual(
expectedImg.bitmap.data
);
});
it("left-align text by default", async () => {
const expectedImage = await Jimp.read(
getTestDir(__dirname) + "/images/left-aligned.png"
);
const textImage = await createTextImage(320, 240, Jimp.FONT_SANS_16_BLACK, {
text: "This is only a test.",
maxWidth: 100,
});
expect(textImage.bitmap.data).toEqual(expectedImage.bitmap.data);
});
it("left-align text by default when passing object", async () => {
const expectedImage = await Jimp.read(
getTestDir(__dirname) + "/images/left-aligned.png"
);
const textImage = await createTextImage(320, 240, Jimp.FONT_SANS_16_BLACK, {
text: { text: "This is only a test." },
maxWidth: 100,
});
expect(textImage.bitmap.data).toEqual(expectedImage.bitmap.data);
});
it("left-align text when passing object with alignmentX", async () => {
const expectedImage = await Jimp.read(
getTestDir(__dirname) + "/images/left-aligned.png"
);
const textImage = await createTextImage(320, 240, Jimp.FONT_SANS_16_BLACK, {
text: {
text: "This is only a test.",
alignmentX: Jimp.HORIZONTAL_ALIGN_LEFT,
},
maxWidth: 100,
});
expect(textImage.bitmap.data).toEqual(expectedImage.bitmap.data);
});
it("center-align text when passing object with alignmentX", async () => {
const expectedImage = await Jimp.read(
getTestDir(__dirname) + "/images/center-aligned.png"
);
const textImage = await createTextImage(320, 240, Jimp.FONT_SANS_16_BLACK, {
text: {
text: "This is only a test.",
alignmentX: Jimp.HORIZONTAL_ALIGN_CENTER,
},
maxWidth: 100,
});
expect(textImage.bitmap.data).toEqual(expectedImage.bitmap.data);
});
it("right-align text when passing object with alignmentX", async () => {
const expectedImage = await Jimp.read(
getTestDir(__dirname) + "/images/right-aligned.png"
);
const textImage = await createTextImage(320, 240, Jimp.FONT_SANS_16_BLACK, {
text: {
text: "This is only a test.",
alignmentX: Jimp.HORIZONTAL_ALIGN_RIGHT,
},
maxWidth: 100,
});
expect(textImage.bitmap.data).toEqual(expectedImage.bitmap.data);
});
it("middle-align text when passing object with alignmentY", async () => {
const expectedImage = await Jimp.read(
getTestDir(__dirname) + "/images/middle-aligned.png"
);
const textImage = await createTextImage(320, 240, Jimp.FONT_SANS_16_BLACK, {
text: {
text: "This is only a test.",
alignmentY: Jimp.VERTICAL_ALIGN_MIDDLE,
},
maxWidth: 100,
maxHeight: 240,
});
expect(textImage.bitmap.data).toEqual(expectedImage.bitmap.data);
});
it("middle-align text when passing object with alignmentY can offset y", async () => {
const expectedImage = await Jimp.read(
getTestDir(__dirname) + "/images/middle-aligned-y.png"
);
const textImage = await createTextImage(320, 240, Jimp.FONT_SANS_16_BLACK, {
y: 50,
text: {
text: "This is only a test.",
alignmentY: Jimp.VERTICAL_ALIGN_MIDDLE,
},
maxWidth: 100,
maxHeight: 240,
});
expect(textImage.bitmap.data).toEqual(expectedImage.bitmap.data);
});
it("bottom-align text when passing object with alignmentY", async () => {
const expectedImage = await Jimp.read(
getTestDir(__dirname) + "/images/bottom-aligned.png"
);
const textImage = await createTextImage(320, 240, Jimp.FONT_SANS_16_BLACK, {
text: {
text: "This is only a test.",
alignmentY: Jimp.VERTICAL_ALIGN_BOTTOM,
},
maxWidth: 100,
maxHeight: 240,
});
expect(textImage.bitmap.data).toEqual(expectedImage.bitmap.data);
});
it("bottom-align text when passing object with alignmentY offset y", async () => {
const expectedImage = await Jimp.read(
getTestDir(__dirname) + "/images/bottom-aligned-y.png"
);
const textImage = await createTextImage(320, 240, Jimp.FONT_SANS_16_BLACK, {
y: 100,
text: {
text: "This is only a test.",
alignmentY: Jimp.VERTICAL_ALIGN_BOTTOM,
},
maxWidth: 100,
maxHeight: 100,
});
expect(textImage.bitmap.data).toEqual(expectedImage.bitmap.data);
});
it("exposes print y position in cb", async () => {
const expectedImage = await Jimp.read(
getTestDir(__dirname) + "/images/spacing.png"
);
const loadedFont = await jimp.loadFont(Jimp.FONT_SANS_16_BLACK);
const image = await Jimp.create(500, 500, 0xffffffff);
image.print(
loadedFont,
0,
0,
"One two three four fix six seven eight nine ten eleven twelve",
250,
(err, image, { x, y }) => {
image.print(
loadedFont,
x,
y + 50,
"thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty",
250
);
}
);
expect(image.bitmap.data).toEqual(expectedImage.bitmap.data);
});
it("measureText is consistent with measureTextWidth", async () => {
const font = await jimp.loadFont(Jimp.FONT_SANS_16_BLACK);
const text = "n n n";
const width = jimp.measureText(font, text);
const height = jimp.measureTextHeight(font, text, width);
const lineHeight = jimp.measureTextHeight(font, text, Infinity);
expect(height).toEqual(lineHeight);
});
});