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package org.jetbrains.skia
import org.jetbrains.skia.impl.*
import org.jetbrains.skia.impl.Library.Companion.staticLoad
class TextBlobBuilder internal constructor(ptr: NativePointer) : Managed(ptr, _FinalizerHolder.PTR) {
companion object {
init {
staticLoad()
}
}
/**
* Constructs empty TextBlobBuilder. By default, TextBlobBuilder has no runs.
*
* @see [https://fiddle.skia.org/c/@TextBlobBuilder_empty_constructor](https://fiddle.skia.org/c/@TextBlobBuilder_empty_constructor)
*/
constructor() : this(TextBlobBuilder_nMake()) {
Stats.onNativeCall()
}
/**
*
* Returns TextBlob built from runs of glyphs added by builder. Returned
* TextBlob is immutable; it may be copied, but its contents may not be altered.
* Returns null if no runs of glyphs were added by builder.
*
*
* Resets TextBlobBuilder to its initial empty state, allowing it to be
* reused to build a new set of runs.
*
* @return SkTextBlob or null
*
* @see [https://fiddle.skia.org/c/@TextBlobBuilder_make](https://fiddle.skia.org/c/@TextBlobBuilder_make)
*/
fun build(): TextBlob? {
return try {
Stats.onNativeCall()
val ptr = _nBuild(_ptr)
if (ptr == NullPointer) null else TextBlob(ptr)
} finally {
reachabilityBarrier(this)
}
}
/**
* Glyphs are positioned on a baseline at (x, y), using font metrics to
* determine their relative placement.
*
* @param font Font used for this run
* @param text Text to append in this run
* @param x horizontal offset within the blob
* @param y vertical offset within the blob
* @param bounds optional run bounding box
* @return this
*/
fun appendRun(font: Font, text: String, x: Float, y: Float, bounds: Rect? = null): TextBlobBuilder {
return appendRun(font, font.getStringGlyphs(text), x, y, bounds)
}
/**
*
* Glyphs are positioned on a baseline at (x, y), using font metrics to
* determine their relative placement.
*
*
* bounds defines an optional bounding box, used to suppress drawing when TextBlob
* bounds does not intersect Surface bounds. If bounds is null, TextBlob bounds
* is computed from (x, y) and glyphs metrics.
*
* @param font Font used for this run
* @param glyphs glyphs in this run
* @param x horizontal offset within the blob
* @param y vertical offset within the blob
* @param bounds optional run bounding box
* @return this
*/
fun appendRun(font: Font?, glyphs: ShortArray?, x: Float, y: Float, bounds: Rect?): TextBlobBuilder {
return try {
Stats.onNativeCall()
interopScope {
_nAppendRun(
_ptr,
getPtr(font),
toInterop(glyphs),
glyphs?.size ?: 0,
x,
y,
toInterop(bounds?.serializeToFloatArray())
)
}
this
} finally {
reachabilityBarrier(this)
reachabilityBarrier(font)
}
}
/**
*
* Glyphs are positioned on a baseline at y, using x-axis positions from xs.
*
*
* bounds defines an optional bounding box, used to suppress drawing when TextBlob
* bounds does not intersect Surface bounds. If bounds is null, TextBlob bounds
* is computed from (x, y) and glyphs metrics.
*
* @param font Font used for this run
* @param glyphs glyphs in this run
* @param xs horizontal positions of glyphs within the blob
* @param y vertical offset within the blob
* @param bounds optional run bounding box
* @return this
*/
/**
*
* Glyphs are positioned on a baseline at y, using x-axis positions from xs.
*
* @param font Font used for this run
* @param glyphs glyphs in this run
* @param xs horizontal positions on glyphs within the blob
* @param y vertical offset within the blob
* @return this
*/
fun appendRunPosH(
font: Font?,
glyphs: ShortArray,
xs: FloatArray,
y: Float,
bounds: Rect? = null
): TextBlobBuilder {
return try {
require(glyphs.size == xs.size) { "glyphs.length " + glyphs.size + " != xs.length " + xs.size }
Stats.onNativeCall()
interopScope {
_nAppendRunPosH(
_ptr,
getPtr(font),
toInterop(glyphs),
glyphs.size,
toInterop(xs),
y,
toInterop(bounds?.serializeToFloatArray())
)
}
this
} finally {
reachabilityBarrier(this)
reachabilityBarrier(font)
}
}
/**
*
* Glyphs are positioned at positions from pos.
*
*
* bounds defines an optional bounding box, used to suppress drawing when TextBlob
* bounds does not intersect Surface bounds. If bounds is null, TextBlob bounds
* is computed from (x, y) and glyphs metrics.
*
* @param font Font used for this run
* @param glyphs glyphs in this run
* @param pos positions of glyphs within the blob
* @param bounds optional run bounding box
* @return this
*/
/**
*
* Glyphs are positioned at positions from pos.
*
* @param font Font used for this run
* @param glyphs glyphs in this run
* @param pos positions of glyphs within the blob
* @return this
*/
fun appendRunPos(font: Font?, glyphs: ShortArray, pos: Array, bounds: Rect? = null): TextBlobBuilder {
return try {
require(glyphs.size == pos.size) { "glyphs.length " + glyphs.size + " != pos.length " + pos.size }
val floatPos = FloatArray(pos.size * 2)
for (i in pos.indices) {
floatPos[i * 2] = pos[i].x
floatPos[i * 2 + 1] = pos[i].y
}
Stats.onNativeCall()
interopScope {
_nAppendRunPos(
_ptr,
getPtr(font),
toInterop(glyphs),
glyphs.size,
toInterop(floatPos),
toInterop(bounds?.serializeToFloatArray())
)
}
this
} finally {
reachabilityBarrier(this)
reachabilityBarrier(font)
}
}
fun appendRunRSXform(font: Font?, glyphs: ShortArray, xform: Array): TextBlobBuilder {
return try {
require(glyphs.size == xform.size) { "glyphs.length " + glyphs.size + " != xform.length " + xform.size }
val floatXform = FloatArray(xform.size * 4)
for (i in xform.indices) {
floatXform[i * 4] = xform[i].scos
floatXform[i * 4 + 1] = xform[i].ssin
floatXform[i * 4 + 2] = xform[i].tx
floatXform[i * 4 + 3] = xform[i].ty
}
Stats.onNativeCall()
interopScope {
_nAppendRunRSXform(
_ptr,
getPtr(font),
toInterop(glyphs),
glyphs.size,
toInterop(floatXform)
)
}
this
} finally {
reachabilityBarrier(this)
reachabilityBarrier(font)
}
}
private object _FinalizerHolder {
val PTR = TextBlobBuilder_nGetFinalizer()
}
}
@ExternalSymbolName("org_jetbrains_skia_TextBlobBuilder__1nGetFinalizer")
private external fun TextBlobBuilder_nGetFinalizer(): NativePointer
@ExternalSymbolName("org_jetbrains_skia_TextBlobBuilder__1nMake")
private external fun TextBlobBuilder_nMake(): NativePointer
@ExternalSymbolName("org_jetbrains_skia_TextBlobBuilder__1nBuild")
private external fun _nBuild(ptr: NativePointer): NativePointer
@ExternalSymbolName("org_jetbrains_skia_TextBlobBuilder__1nAppendRun")
private external fun _nAppendRun(
ptr: NativePointer, fontPtr: NativePointer,
glyphs: InteropPointer, glyphsLen: Int,
x: Float, y: Float,
bounds: InteropPointer
)
@ExternalSymbolName("org_jetbrains_skia_TextBlobBuilder__1nAppendRunPosH")
private external fun _nAppendRunPosH(
ptr: NativePointer,
fontPtr: NativePointer,
glyphs: InteropPointer,
glyphsLen: Int,
xs: InteropPointer,
y: Float,
bounds: InteropPointer
)
@ExternalSymbolName("org_jetbrains_skia_TextBlobBuilder__1nAppendRunPos")
private external fun _nAppendRunPos(
ptr: NativePointer, fontPtr: NativePointer,
glyphs: InteropPointer, glyphsLen: Int,
pos: InteropPointer,
bounds: InteropPointer
)
@ExternalSymbolName("org_jetbrains_skia_TextBlobBuilder__1nAppendRunRSXform")
private external fun _nAppendRunRSXform(
ptr: NativePointer, fontPtr: NativePointer,
glyphs: InteropPointer, glyphsLen: Int,
xform: InteropPointer
)
