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/*
* Copyright 2019 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.text
import androidx.compose.ui.geometry.Offset
import androidx.compose.ui.geometry.Rect
import androidx.compose.ui.geometry.Size
import androidx.compose.ui.graphics.Canvas
import androidx.compose.ui.text.style.TextOverflow
object TextPainter {
/**
* Paints the text onto the given canvas.
*
* @param canvas a canvas to be drawn
* @param textLayoutResult a result of text layout
*/
fun paint(canvas: Canvas, textLayoutResult: TextLayoutResult) {
val needClipping = textLayoutResult.hasVisualOverflow &&
textLayoutResult.layoutInput.overflow == TextOverflow.Clip
if (needClipping) {
val width = textLayoutResult.size.width.toFloat()
val height = textLayoutResult.size.height.toFloat()
val bounds = Rect(Offset.Zero, Size(width, height))
canvas.save()
canvas.clipRect(bounds)
}
try {
textLayoutResult.multiParagraph.paint(
canvas,
textLayoutResult.layoutInput.style.color,
textLayoutResult.layoutInput.style.shadow,
textLayoutResult.layoutInput.style.textDecoration
)
} finally {
if (needClipping) {
canvas.restore()
}
}
}
}