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commonMain.org.jetbrains.skia.shaper.Shaper.kt Maven / Gradle / Ivy
@file:Suppress("NESTED_EXTERNAL_DECLARATION")
package org.jetbrains.skia.shaper
import org.jetbrains.skia.*
import org.jetbrains.skia.FontFeature.Companion.arrayOfFontFeaturesToInterop
import org.jetbrains.skia.impl.*
import org.jetbrains.skia.impl.Library.Companion.staticLoad
/**
* Shapes text using HarfBuzz and places the shaped text into a
* client-managed buffer.
*/
class Shaper internal constructor(ptr: NativePointer) : Managed(ptr, _FinalizerHolder.PTR) {
companion object {
fun makePrimitive(): Shaper {
Stats.onNativeCall()
return Shaper(_nMakePrimitive())
}
fun makeShaperDrivenWrapper(): Shaper {
return makeShaperDrivenWrapper(null)
}
fun makeShaperDrivenWrapper(fontMgr: FontMgr?): Shaper {
return try {
Stats.onNativeCall()
Shaper(_nMakeShaperDrivenWrapper(getPtr(fontMgr)))
} finally {
reachabilityBarrier(fontMgr)
}
}
fun makeShapeThenWrap(): Shaper {
return makeShapeThenWrap(null)
}
fun makeShapeThenWrap(fontMgr: FontMgr?): Shaper {
return try {
Stats.onNativeCall()
Shaper(_nMakeShapeThenWrap(getPtr(fontMgr)))
} finally {
reachabilityBarrier(fontMgr)
}
}
fun makeShapeDontWrapOrReorder(): Shaper {
return makeShapeDontWrapOrReorder(null)
}
fun makeShapeDontWrapOrReorder(fontMgr: FontMgr?): Shaper {
return try {
Stats.onNativeCall()
Shaper(_nMakeShapeDontWrapOrReorder(getPtr(fontMgr)))
} finally {
reachabilityBarrier(fontMgr)
}
}
/**
*
* Only works on macOS
*
*
* WARN broken in m87 https://bugs.chromium.org/p/skia/issues/detail?id=10897
*
* @return Shaper on macOS, throws UnsupportedOperationException elsewhere
*/
fun makeCoreText(): Shaper {
Stats.onNativeCall()
val ptr = _nMakeCoreText()
if (ptr == NullPointer) throw UnsupportedOperationException("CoreText not available")
return Shaper(ptr)
}
fun make(): Shaper {
return make(null)
}
fun make(fontMgr: FontMgr?): Shaper {
return try {
Stats.onNativeCall()
Shaper(Shaper_nMake(getPtr(fontMgr)))
} finally {
reachabilityBarrier(fontMgr)
}
}
init {
staticLoad()
}
}
fun shape(text: String, font: Font): TextBlob? {
return shape(text, font, ShapingOptions.DEFAULT, Float.POSITIVE_INFINITY, Point.Companion.ZERO)
}
fun shape(text: String, font: Font, width: Float): TextBlob? {
return shape(text, font, ShapingOptions.DEFAULT, width, Point.Companion.ZERO)
}
fun shape(text: String, font: Font, width: Float, offset: Point): TextBlob? {
return shape(text, font, ShapingOptions.DEFAULT, width, offset)
}
fun shape(text: String, font: Font, opts: ShapingOptions, width: Float, offset: Point): TextBlob? {
return try {
Stats.onNativeCall()
val ptr = ManagedString(text).use { managedString ->
interopScope {
_nShapeBlob(
_ptr,
managedString._ptr,
getPtr(font),
optsFeaturesLen = opts.features?.size ?: 0,
optsFeaturesIntArray = arrayOfFontFeaturesToInterop(opts.features),
optsBooleanProps = opts._booleanPropsToInt(),
width = width,
offsetX = offset.x,
offsetY = offset.y
)
}
}
if (NullPointer == ptr) null else TextBlob(ptr)
} finally {
reachabilityBarrier(this)
reachabilityBarrier(font)
}
}
fun shape(
text: String,
font: Font,
opts: ShapingOptions,
width: Float,
runHandler: RunHandler
): Shaper {
ManagedString(text).use { textUtf8 ->
FontMgrRunIterator(textUtf8, false, font, opts).use { fontIter ->
IcuBidiRunIterator(
textUtf8,
false,
if (opts.isLeftToRight) -2 /* Bidi.DIRECTION_LEFT_TO_RIGHT */ else -1 /* Bidi.DIRECTION_RIGHT_TO_LEFT */
).use { bidiIter ->
HbIcuScriptRunIterator(textUtf8, false).use { scriptIter ->
val langIter =
TrivialLanguageRunIterator(text, defaultLanguageTag())
return shape(textUtf8, fontIter, bidiIter, scriptIter, langIter, opts, width, runHandler)
}
}
}
}
}
fun shape(
text: String,
fontIter: Iterator,
bidiIter: Iterator,
scriptIter: Iterator,
langIter: Iterator,
opts: ShapingOptions,
width: Float,
runHandler: RunHandler
): Shaper {
ManagedString(text).use { textUtf8 ->
return shape(
textUtf8,
fontIter,
bidiIter,
scriptIter,
langIter,
opts,
width,
runHandler
)
}
}
fun shape(
textUtf8: ManagedString,
fontIter: Iterator,
bidiIter: Iterator,
scriptIter: Iterator,
langIter: Iterator,
opts: ShapingOptions,
width: Float,
runHandler: RunHandler
): Shaper {
Stats.onNativeCall()
doShape(textUtf8, fontIter, bidiIter, scriptIter, langIter, opts, width, runHandler)
return this
}
fun shapeLine(text: String?, font: Font?, opts: ShapingOptions): TextLine {
return try {
Stats.onNativeCall()
ManagedString(text).use { managedString ->
interopScope {
TextLine(
_nShapeLine(
_ptr,
managedString._ptr,
getPtr(font),
optsFeaturesLen = opts.features?.size ?: 0,
optsFeatures = arrayOfFontFeaturesToInterop(opts.features),
optsBooleanProps = opts._booleanPropsToInt()
)
)
}
}
} finally {
reachabilityBarrier(this)
reachabilityBarrier(font)
}
}
fun shapeLine(text: String?, font: Font?): TextLine {
return shapeLine(text, font, ShapingOptions.DEFAULT)
}
private object _FinalizerHolder {
val PTR = Shaper_nGetFinalizer()
}
}
internal expect fun Shaper.doShape(
textUtf8: ManagedString,
fontIter: Iterator,
bidiIter: Iterator,
scriptIter: Iterator,
langIter: Iterator,
opts: ShapingOptions,
width: Float,
runHandler: RunHandler
)
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper__1nGetFinalizer")
private external fun Shaper_nGetFinalizer(): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper__1nMake")
private external fun Shaper_nMake(fontMgrPtr: NativePointer): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper__1nMakePrimitive")
private external fun _nMakePrimitive(): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper__1nMakeShaperDrivenWrapper")
private external fun _nMakeShaperDrivenWrapper(fontMgrPtr: NativePointer): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper__1nMakeShapeThenWrap")
private external fun _nMakeShapeThenWrap(fontMgrPtr: NativePointer): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper__1nMakeShapeDontWrapOrReorder")
private external fun _nMakeShapeDontWrapOrReorder(fontMgrPtr: NativePointer): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper__1nMakeCoreText")
private external fun _nMakeCoreText(): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper__1nShapeBlob")
private external fun _nShapeBlob(
ptr: NativePointer,
text: NativePointer,
fontPtr: NativePointer,
optsFeaturesLen: Int,
optsFeaturesIntArray: InteropPointer,
optsBooleanProps: Int,
width: Float,
offsetX: Float,
offsetY: Float
): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper__1nShapeLine")
private external fun _nShapeLine(
ptr: NativePointer,
text: NativePointer,
fontPtr: NativePointer,
optsFeaturesLen: Int,
optsFeatures: InteropPointer,
optsBooleanProps: Int
): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper__1nShape")
internal external fun Shaper_nShape(
ptr: NativePointer,
textPtr: NativePointer,
fontIter: InteropPointer,
bidiIter: InteropPointer,
scriptIter: InteropPointer,
langIter: InteropPointer,
optsFeaturesLen: Int,
optsFeaturesIntArray: InteropPointer,
optsBooleanProps: Int,
width: Float,
runHandler: InteropPointer
)
// Native/JS only
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper_RunIterator_1nGetFinalizer")
internal external fun RunIterator_nGetFinalizer(): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper_RunIterator_1nCreateRunIterator")
internal external fun RunIterator_nCreateRunIterator(type: Int, textPtr: NativePointer): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper_RunIterator_1nInitRunIterator")
internal external fun RunIterator_nInitRunIterator(
ptr: NativePointer,
type: Int,
onConsume: InteropPointer,
onEndOfCurrentRun: InteropPointer,
onAtEnd: InteropPointer,
onCurrent: InteropPointer
)
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper_RunHandler_1nCreate")
internal external fun RunHandler_nCreate(): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper_RunHandler_1nGetFinalizer")
internal external fun RunHandler_nGetFinalizer(): NativePointer
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper_RunHandler_1nInit")
internal external fun RunHandler_nInit(
ptr: NativePointer,
onBeginLine: InteropPointer,
onRunInfo: InteropPointer,
onCommitRunInfo: InteropPointer,
onRunOffset: InteropPointer,
onCommitRun: InteropPointer,
onCommitLine: InteropPointer
)
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper_RunHandler_1nGetGlyphs")
internal external fun RunHandler_nGetGlyphs(ptr: NativePointer, result: InteropPointer)
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper_RunHandler_1nGetClusters")
internal external fun RunHandler_nGetClusters(ptr: NativePointer, result: InteropPointer)
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper_RunHandler_1nGetPositions")
internal external fun RunHandler_nGetPositions(ptr: NativePointer, result: InteropPointer)
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper_RunHandler_1nSetOffset")
internal external fun RunHandler_nSetOffset(ptr: NativePointer, x: Float, y: Float)
@ExternalSymbolName("org_jetbrains_skia_shaper_Shaper_RunHandler_1nGetRunInfo")
internal external fun RunHandler_nGetRunInfo(ptr: NativePointer, result: InteropPointer): NativePointer
