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A pure Kotlin, UI framework for the Web

There is a newer version: 0.10.4

package io.nacular.doodle.skia

import io.nacular.doodle.drawing.AffineTransform
import io.nacular.doodle.drawing.Color
import io.nacular.doodle.drawing.Font
import io.nacular.doodle.drawing.impl.FontImpl
import io.nacular.doodle.geometry.Path
import io.nacular.doodle.geometry.Point
import io.nacular.doodle.geometry.Polygon
import io.nacular.doodle.geometry.Rectangle
import io.nacular.doodle.geometry.toPath
import org.jetbrains.skia.Matrix33
import org.jetbrains.skia.Matrix44
import org.jetbrains.skia.RRect
import org.jetbrains.skia.Rect
import org.jetbrains.skia.paragraph.TextStyle


internal fun Color.skia(): Int = (((opacity * 0xFF).toUInt() shl 24) + (red.toUInt() shl 16) + (green.toUInt() shl 8) + blue.toUInt()).toInt()

internal fun Rectangle.skia() = Rect.makeXYWH(x.toFloat(), y.toFloat(), width.toFloat(), height.toFloat())
internal fun Rectangle.rrect(radius: Float) = RRect.makeXYWH(
        l = x.toFloat(),
        t = y.toFloat(),
        w = width.toFloat(),
        h = height.toFloat(),
        tlRad = radius, trRad = radius, brRad = radius, blRad = radius
)

internal fun Polygon.skia() = toPath().skia()

internal fun Point.skia() = org.jetbrains.skia.Point(x.toFloat(), y.toFloat())

internal fun Path.skia() = org.jetbrains.skia.Path.makeFromSVGString(data)

internal fun AffineTransform.skia33() = Matrix33(
        scaleX.toFloat    (),
        shearX.toFloat    (),
        translateX.toFloat(),
        shearY.toFloat    (),
        scaleY.toFloat    (),
        translateY.toFloat(),
        0f,
        0f,
        1f
)

internal fun AffineTransform.skia44() = Matrix44(
        m00.toFloat(), m01.toFloat(), m02.toFloat(), m03.toFloat(),
        m10.toFloat(), m11.toFloat(), m12.toFloat(), m13.toFloat(),
        m20.toFloat(), m21.toFloat(), m22.toFloat(), m23.toFloat(),
        0f,            0f,            0f,            1f
)

internal fun FontImpl.textStyle() = TextStyle().apply {
        fontSize     = textStyle.fontSize
        typeface     = textStyle.typeface
        fontStyle    = textStyle.fontStyle
        fontFamilies = textStyle.fontFamilies
        baselineMode = textStyle.baselineMode
}