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Add capability to have different shapes of the dots
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Simon Scholz
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Nov 27, 2023
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kotlin-sample/src/main/kotlin/io/github/simonscholz/CustomDotsMain.kt
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| package io.github.simonscholz | ||
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| import io.github.simonscholz.qrcode.QrCodeConfig | ||
| import io.github.simonscholz.qrcode.QrCodeDotShape | ||
| import io.github.simonscholz.qrcode.QrCodeFactory | ||
| import java.awt.Color | ||
| import java.awt.Graphics2D | ||
| import java.io.File | ||
| import java.nio.file.Files | ||
| import java.nio.file.Paths | ||
|
|
||
| fun main() { | ||
| val path = Paths.get(System.getProperty("user.home"), "qr-code-samples") | ||
| Files.createDirectories(path) | ||
| val qrCodeDir = path.toAbsolutePath().toString() | ||
| val qrCodeApi = QrCodeFactory.createQrCodeApi() | ||
| QrCodeConfig.Builder("https://simonscholz.github.io/") | ||
| .qrCodeDotStyler(QrCodeDotShape.CIRCLE) | ||
| .qrCodeSize(800) | ||
| .build() | ||
| .run { | ||
| qrCodeApi.createQrCodeImage(this) | ||
| .toFile(File(qrCodeDir, "/qr-with-CIRCLE-dots-kotlin.png")) | ||
| } | ||
|
|
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| QrCodeConfig.Builder("https://simonscholz.github.io/") | ||
| .qrCodeDotStyler(QrCodeDotShape.ROUNDED_SQUARE) | ||
| .qrCodeSize(800) | ||
| .build() | ||
| .run { | ||
| qrCodeApi.createQrCodeImage(this) | ||
| .toFile(File(qrCodeDir, "/qr-with-ROUND-SQUARE-dots-kotlin.png")) | ||
| } | ||
|
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| QrCodeConfig.Builder("https://simonscholz.github.io/") | ||
| .qrCodeDotStyler(QrCodeDotShape.HEXAGON) | ||
| .qrCodeSize(800) | ||
| .build() | ||
| .run { | ||
| qrCodeApi.createQrCodeImage(this) | ||
| .toFile(File(qrCodeDir, "/qr-with-HEXAGON-dots-kotlin.png")) | ||
| } | ||
|
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| QrCodeConfig.Builder("https://simonscholz.github.io/") | ||
| .qrCodeDotStyler(QrCodeDotShape.TRIANGLE) | ||
| .qrCodeSize(800) | ||
| .build() | ||
| .run { | ||
| qrCodeApi.createQrCodeImage(this) | ||
| .toFile(File(qrCodeDir, "/qr-with-TRIANGLE-dots-kotlin.png")) | ||
| } | ||
|
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| QrCodeConfig.Builder("https://simonscholz.github.io/") | ||
| .qrCodeDotStyler(QrCodeDotShape.HEART) | ||
| .qrCodeSize(800) | ||
| .build() | ||
| .run { | ||
| qrCodeApi.createQrCodeImage(this) | ||
| .toFile(File(qrCodeDir, "/qr-with-HEART-dots-kotlin.png")) | ||
| } | ||
|
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| QrCodeConfig.Builder("https://simonscholz.github.io/") | ||
| .qrCodeDotStyler(QrCodeDotShape.HOUSE) | ||
| .qrCodeSize(800) | ||
| .build() | ||
| .run { | ||
| qrCodeApi.createQrCodeImage(this) | ||
| .toFile(File(qrCodeDir, "/qr-with-HOUSE-dots-kotlin.png")) | ||
| } | ||
|
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| QrCodeConfig.Builder("https://simonscholz.github.io/") | ||
| .qrCodeDotStyler(::drawColorfulHouseWithDoorAndWindow) | ||
| .qrCodeSize(800) | ||
| .build() | ||
| .run { | ||
| qrCodeApi.createQrCodeImage(this) | ||
| .toFile(File(qrCodeDir, "/qr-with-COLORFUL-HOUSE-dots-kotlin.png")) | ||
| } | ||
| } | ||
|
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| private fun drawColorfulHouseWithDoorAndWindow(x: Int, y: Int, size: Int, graphic: Graphics2D) { | ||
| val roofHeight = size / 2 | ||
| val houseWidth = size | ||
| val houseHeight = size - roofHeight | ||
|
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| // Draw the base of the house | ||
| graphic.color = Color.RED | ||
| graphic.fillRect(x, y + roofHeight, houseWidth, houseHeight) | ||
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| // Draw the roof | ||
| graphic.color = Color.BLUE | ||
| val roofXPoints = intArrayOf(x, x + houseWidth / 2, x + houseWidth) | ||
| val roofYPoints = intArrayOf(y + roofHeight, y, y + roofHeight) | ||
| graphic.fillPolygon(roofXPoints, roofYPoints, 3) | ||
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| // Draw the door | ||
| val doorWidth = size / 5 | ||
| val doorHeight = size / 2 - 1 | ||
| val doorX = x + (houseWidth - size / 5) / 2 + size / 10 | ||
| val doorY = y + roofHeight + houseHeight - doorHeight + 1 | ||
| graphic.color = Color.GREEN | ||
| graphic.fillRect(doorX, doorY, doorWidth, doorHeight) | ||
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| // Draw the window | ||
| val windowSize = size / 5 | ||
| val windowX = x + size / 5 | ||
| val windowY = y + roofHeight + size / 5 | ||
| graphic.color = Color.YELLOW | ||
| graphic.fillRect(windowX, windowY, windowSize, windowSize) | ||
| } |
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47 changes: 47 additions & 0 deletions
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qr-code/src/main/kotlin/io/github/simonscholz/qrcode/QrCodeDotStyler.kt
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| package io.github.simonscholz.qrcode | ||
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| import io.github.simonscholz.qrcode.internal.graphics.CustomQrCodeDotStyler | ||
| import java.awt.Graphics2D | ||
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| interface QrCodeDotStyler { | ||
| fun createDot(x: Int, y: Int, dotSize: Int, graphics: Graphics2D) | ||
| } | ||
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| enum class QrCodeDotShape : QrCodeDotStyler { | ||
| SQUARE { | ||
| override fun createDot(x: Int, y: Int, dotSize: Int, graphics: Graphics2D) { | ||
| graphics.fillRect(x, y, dotSize, dotSize) | ||
| } | ||
| }, | ||
| ROUNDED_SQUARE { | ||
| override fun createDot(x: Int, y: Int, dotSize: Int, graphics: Graphics2D) { | ||
| graphics.fillRoundRect(x, y, dotSize, dotSize, 10, 10) | ||
| } | ||
| }, | ||
| CIRCLE { | ||
| override fun createDot(x: Int, y: Int, dotSize: Int, graphics: Graphics2D) { | ||
| graphics.fillArc(x, y, dotSize, dotSize, 0, 360) | ||
| } | ||
| }, | ||
| HEXAGON { | ||
| override fun createDot(x: Int, y: Int, dotSize: Int, graphics: Graphics2D) { | ||
| CustomQrCodeDotStyler.drawHexagon(x, y, dotSize, graphics) | ||
| } | ||
| }, | ||
| TRIANGLE { | ||
| override fun createDot(x: Int, y: Int, dotSize: Int, graphics: Graphics2D) { | ||
| CustomQrCodeDotStyler.drawEquilateralTriangle(x, y, dotSize, graphics) | ||
| } | ||
| }, | ||
| HEART { | ||
| override fun createDot(x: Int, y: Int, dotSize: Int, graphics: Graphics2D) { | ||
| CustomQrCodeDotStyler.drawHeart(x, y, dotSize, graphics) | ||
| } | ||
| }, | ||
| HOUSE { | ||
| override fun createDot(x: Int, y: Int, dotSize: Int, graphics: Graphics2D) { | ||
| CustomQrCodeDotStyler.drawHouse(x, y, dotSize, graphics) | ||
| } | ||
| }, | ||
| ; | ||
| } |
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...e/src/main/kotlin/io/github/simonscholz/qrcode/internal/graphics/CustomQrCodeDotStyler.kt
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| package io.github.simonscholz.qrcode.internal.graphics | ||
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| import java.awt.Graphics2D | ||
| import java.awt.Point | ||
| import java.awt.Polygon | ||
| import kotlin.math.cos | ||
| import kotlin.math.sin | ||
| import kotlin.math.sqrt | ||
|
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| internal object CustomQrCodeDotStyler { | ||
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| fun drawHouse(x: Int, y: Int, size: Int, graphic: Graphics2D) { | ||
| val roofHeight = size / 2 | ||
| val houseWidth = size - 1 // -1 to have a gap between the houses | ||
| val houseHeight = size - roofHeight | ||
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| // Draw the base of the house | ||
| graphic.fillRect(x, y + roofHeight, houseWidth, houseHeight) | ||
|
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| // Draw the roof | ||
| val roofXPoints = intArrayOf(x, x + houseWidth / 2, x + houseWidth) | ||
| val roofYPoints = intArrayOf(y + roofHeight, y, y + roofHeight) | ||
| graphic.fillPolygon(roofXPoints, roofYPoints, 3) | ||
| } | ||
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| fun drawHeart(x: Int, y: Int, size: Int, graphic: Graphics2D) { | ||
| val heartWidth = handleRoundingIssues(size) | ||
| val heartHeight = handleRoundingIssues(size) | ||
| val gap = heartWidth / 4 | ||
|
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| // Draw the left arc of the heart | ||
| graphic.fillArc(x, y, heartWidth / 2, heartHeight / 2, 0, 180) | ||
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| // Draw the right arc of the heart | ||
| graphic.fillArc(x + heartWidth / 2, y, heartWidth / 2, heartHeight / 2, 0, 180) | ||
|
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| // Draw the bottom triangle of the heart | ||
| val triangleXPoints = intArrayOf(x, x + heartWidth / 2, x + heartWidth, x) | ||
| val triangleYPoints = intArrayOf(y + heartHeight / 2 - gap, y + heartHeight - gap, y + heartHeight / 2 - gap, y + heartHeight / 2 - gap) | ||
| graphic.fillPolygon(triangleXPoints, triangleYPoints, 4) | ||
| } | ||
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| private fun handleRoundingIssues(size: Int): Int = | ||
| if (size % 2 == 0) { | ||
| size | ||
| } else { | ||
| size - 1 | ||
| } | ||
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| fun drawHexagon(x: Int, y: Int, size: Int, graphic: Graphics2D) { | ||
| val hexRadius = size / 2 | ||
| graphic.fillPolygon(createHexagon(Point(x + hexRadius, y + hexRadius), hexRadius)) | ||
| } | ||
|
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| private fun createHexagon(center: Point, radius: Int): Polygon { | ||
| val polygon = Polygon() | ||
| for (i in 0..5) { | ||
| polygon.addPoint( | ||
| (center.x + radius * cos(i * 2 * Math.PI / 6.0)).toInt(), | ||
| (center.y + radius * sin(i * 2 * Math.PI / 6.0)).toInt(), | ||
| ) | ||
| } | ||
| return polygon | ||
| } | ||
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| fun drawEquilateralTriangle(x: Int, y: Int, size: Int, graphic: Graphics2D) { | ||
| val triangleHeight = (sqrt(3.0) / 2 * size).toInt() | ||
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| val triangleXPoints = intArrayOf(x, x + size / 2, x + size, x) | ||
| val triangleYPoints = intArrayOf(y + triangleHeight, y, y + triangleHeight, y + triangleHeight) | ||
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| graphic.fillPolygon(triangleXPoints, triangleYPoints, 3) | ||
| } | ||
| } |
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