LayoutlibFontResourceLoader.kt
/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.compose.ui.tooling
import android.content.Context
import android.graphics.Typeface
import android.os.Build
import androidx.annotation.DoNotInline
import androidx.annotation.RequiresApi
import androidx.compose.ui.text.font.Font
import androidx.compose.ui.text.font.ResourceFont
/**
* Layoutlib implementation for [Font.ResourceLoader]
*/
internal class LayoutlibFontResourceLoader(private val context: Context) : Font.ResourceLoader {
override fun load(font: Font): Typeface {
return if (font is ResourceFont && Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
ResourceFontHelper.load(context, font)
} else {
throw IllegalArgumentException("Unknown font type: ${font.javaClass.name}")
}
}
}
@RequiresApi(Build.VERSION_CODES.O)
private object ResourceFontHelper {
@DoNotInline
fun load(context: Context, font: ResourceFont): Typeface {
return context.resources.getFont(font.resId)
}
}