com.netflix.atlas.chart.graphics.ValueGrid.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.Graphics2D
/**
* Draws horizontal grid lines based on a value axis.
*
* @param yaxis
* Axis to use for creating the scale and determining the the tick marks that correspond with
* the major grid lines.
* @param major
* Style to use for drawing the major tick lines.
* @param minor
* Style to use for drawing the minor tick lines.
*/
case class ValueGrid(yaxis: ValueAxis, major: Style, minor: Style) extends Element {
def draw(g: Graphics2D, x1: Int, y1: Int, x2: Int, y2: Int): Unit = {
val yscale = yaxis.scale(y1, y2)
val ticks = yaxis.ticks(y1, y2)
ticks.foreach { tick =>
if (tick.major) major.configure(g) else minor.configure(g)
val py = yscale(tick.v)
if (py != y1 && py != y2) {
g.drawLine(x1, py, x2, py)
}
}
}
}