com.netflix.atlas.chart.graphics.Block.scala Maven / Gradle / Ivy
/*
* Copyright 2014-2024 Netflix, Inc.
*
* 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 com.netflix.atlas.chart.graphics
import java.awt.Color
import java.awt.Graphics2D
/**
* Draws a set of elements vertically.
*
* @param elements
* Set of elements to draw within the block.
* @param background
* Fill color to use for the background of the block. If not specified then the elements will
* be drawn directly over the existing content.
*/
case class Block(elements: List[Element], background: Option[Color] = None)
extends Element
with VariableHeight {
override def minHeight: Int = 0
override def computeHeight(g: Graphics2D, width: Int): Int = {
elements.map(_.getHeight(g, width)).sum
}
override def draw(g: Graphics2D, x1: Int, y1: Int, x2: Int, y2: Int): Unit = {
val width = x2 - x1
val height = y2 - y1
background.foreach { c =>
g.setColor(c)
g.fillRect(x1, y1, width, height)
}
var y = y1
elements.foreach { element =>
val h = element.getHeight(g, width)
element.draw(g, x1, y, x1 + width, y + h)
y += h
}
}
}