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A pure Kotlin, UI framework for the Web
package io.nacular.doodle.theme.native
import io.nacular.doodle.drawing.Color
import io.nacular.doodle.drawing.Font
import io.nacular.doodle.drawing.Font.Style
import io.nacular.doodle.drawing.Font.Style.Italic
import io.nacular.doodle.drawing.Font.Style.Normal
import io.nacular.doodle.drawing.Font.Style.Oblique
import io.nacular.doodle.event.PointerEvent
import io.nacular.doodle.geometry.Point
import io.nacular.doodle.system.SystemInputEvent.Modifier.Alt
import io.nacular.doodle.system.SystemInputEvent.Modifier.Ctrl
import io.nacular.doodle.system.SystemInputEvent.Modifier.Meta
import io.nacular.doodle.system.SystemInputEvent.Modifier.Shift
import io.nacular.doodle.system.SystemPointerEvent.Button.Button2
import io.nacular.doodle.system.SystemPointerEvent.Button.Button3
import io.nacular.doodle.system.SystemPointerEvent.Type.Click
import io.nacular.doodle.system.SystemPointerEvent.Type.Down
import io.nacular.doodle.system.SystemPointerEvent.Type.Drag
import io.nacular.doodle.system.SystemPointerEvent.Type.Enter
import io.nacular.doodle.system.SystemPointerEvent.Type.Exit
import io.nacular.doodle.system.SystemPointerEvent.Type.Move
import io.nacular.doodle.system.SystemPointerEvent.Type.Up
import io.nacular.measured.units.Angle
import io.nacular.measured.units.div
import io.nacular.measured.units.normalize
import io.nacular.measured.units.times
import kotlinx.datetime.Clock
import org.jetbrains.skia.FontSlant.ITALIC
import org.jetbrains.skia.FontSlant.OBLIQUE
import org.jetbrains.skia.FontSlant.UPRIGHT
import org.jetbrains.skia.FontStyle
import org.jetbrains.skia.paragraph.BaselineMode.IDEOGRAPHIC
import org.jetbrains.skia.paragraph.TextStyle
import java.awt.Component
import java.awt.event.InputEvent.ALT_DOWN_MASK
import java.awt.event.InputEvent.BUTTON1_DOWN_MASK
import java.awt.event.InputEvent.BUTTON2_DOWN_MASK
import java.awt.event.InputEvent.CTRL_DOWN_MASK
import java.awt.event.InputEvent.META_DOWN_MASK
import java.awt.event.InputEvent.SHIFT_DOWN_MASK
import java.awt.event.MouseEvent
import java.awt.event.MouseEvent.BUTTON1
import java.awt.event.MouseEvent.BUTTON2
import java.awt.event.MouseEvent.BUTTON3
import java.awt.event.MouseEvent.BUTTON3_DOWN_MASK
import java.awt.event.MouseEvent.MOUSE_CLICKED
import java.awt.event.MouseEvent.MOUSE_DRAGGED
import java.awt.event.MouseEvent.MOUSE_ENTERED
import java.awt.event.MouseEvent.MOUSE_EXITED
import java.awt.event.MouseEvent.MOUSE_MOVED
import java.awt.event.MouseEvent.MOUSE_PRESSED
import java.awt.event.MouseEvent.MOUSE_RELEASED
import java.awt.event.MouseWheelEvent
import java.awt.font.TextAttribute.FAMILY
import java.awt.font.TextAttribute.POSTURE
import java.awt.font.TextAttribute.POSTURE_OBLIQUE
import java.awt.font.TextAttribute.POSTURE_REGULAR
import java.awt.font.TextAttribute.SIZE
import java.awt.font.TextAttribute.WEIGHT
import org.jetbrains.skia.Font as SkiaFont
import java.awt.Color as AwtColor
import java.awt.Font as AwtFont
internal fun PointerEvent.toAwt(target: Component, at: Point = location): MouseEvent {
val id = when (type) {
Up -> MOUSE_RELEASED
Down -> MOUSE_PRESSED
Move -> MOUSE_MOVED
Exit -> MOUSE_EXITED
Drag -> MOUSE_DRAGGED
Click -> MOUSE_CLICKED
Enter -> MOUSE_ENTERED
}
val button = when (buttons) {
setOf(Button2) -> BUTTON2
setOf(Button3) -> BUTTON3
else -> BUTTON1
}
// FIXME: Inject
val time = Clock.System.now().toEpochMilliseconds()
var modifiers = when (button) {
BUTTON2 -> BUTTON2_DOWN_MASK
BUTTON3 -> BUTTON3_DOWN_MASK
else -> BUTTON1_DOWN_MASK
}
if (Alt in this.modifiers) {
modifiers = modifiers or ALT_DOWN_MASK
}
if (Ctrl in this.modifiers) {
modifiers = modifiers or CTRL_DOWN_MASK
}
if (Shift in this.modifiers) {
modifiers = modifiers or SHIFT_DOWN_MASK
}
if (Meta in this.modifiers) {
modifiers = modifiers or META_DOWN_MASK
}
return MouseEvent(target, id, time, modifiers, at.x.toInt(), at.y.toInt(), clickCount, false, button)
}
internal fun MouseEvent.update(target: Component, location: java.awt.Point): MouseEvent = when (this) {
is MouseWheelEvent -> MouseWheelEvent(
target,
id,
`when`,
modifiersEx,
location.x, location.y,
clickCount, isPopupTrigger, scrollType, scrollAmount, wheelRotation)
else -> MouseEvent(target, id, `when`, modifiersEx, location.x, location.y, clickCount, isPopupTrigger)
}
private const val MAX_SKIA_FONT_WEIGHT = 1000f
internal fun AwtFont.skiaStyle(): FontStyle {
val w = attributes[WEIGHT] as? Float?
val weight = when {
w == null || w > 1f -> when (style) {
AwtFont.PLAIN -> FontStyle.NORMAL
AwtFont.BOLD -> FontStyle.BOLD
AwtFont.ITALIC -> FontStyle.ITALIC
AwtFont.BOLD + AwtFont.ITALIC -> FontStyle.BOLD_ITALIC
else -> FontStyle.NORMAL
}.weight
else -> (w * MAX_SKIA_FONT_WEIGHT).toInt()
}
return FontStyle(weight, size, (attributes[POSTURE] as? Float).let {
when (it) {
POSTURE_OBLIQUE -> ITALIC
else -> UPRIGHT
}
})
}
internal fun SkiaFont.toAwt() = AwtFont(mutableMapOf(
SIZE to size,
FAMILY to typefaceOrDefault.familyName,
WEIGHT to typefaceOrDefault.fontStyle.weight / MAX_SKIA_FONT_WEIGHT,
POSTURE to typefaceOrDefault.fontStyle.slant.run {
when (this) {
ITALIC -> POSTURE_OBLIQUE
OBLIQUE -> POSTURE_OBLIQUE
else -> POSTURE_REGULAR
}
}
))
internal fun Font?.toAwt(default: SkiaFont) = when (this) {
null -> default.toAwt()
else -> AwtFont(mutableMapOf(
SIZE to size,
FAMILY to family,
WEIGHT to weight / MAX_SKIA_FONT_WEIGHT,
POSTURE to style.run {
when (this) {
Normal -> POSTURE_REGULAR
Italic -> POSTURE_OBLIQUE
is Oblique -> angle?.normalize()?.div(360 * Angle.degrees) ?: POSTURE_OBLIQUE
}
}
))
}
internal fun AwtFont?.toDoodle(): Font? = when (this) {
null -> null
else -> object: Font {
override val size : Int get() = [email protected]
override val style : Style get() = when {
[email protected] -> Italic
[email protected] -> Oblique()
else -> Normal
}
override val weight: Int get() = [email protected][WEIGHT] as? Int ?: 0
override val family: String get() = [email protected]
}
}
internal fun SkiaFont.textStyle() = TextStyle().apply {
fontSize = size
typeface = typefaceOrDefault
fontStyle = typefaceOrDefault.fontStyle
fontFamilies = typefaceOrDefault.familyNames.map { it.name }.toTypedArray()
baselineMode = IDEOGRAPHIC
}
internal fun Color.toAwt() = AwtColor(red.toInt(), green.toInt(), blue.toInt(), (opacity * 255).toInt())© 2015 - 2024 Weber Informatics LLC | Privacy Policy