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// Copyright (C) 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.
import {TimeScale} from './time_scale';
import {TRACK_SHELL_WIDTH} from './track_constants';
export function drawVerticalLineAtTime(ctx: CanvasRenderingContext2D,
timeScale: TimeScale,
time: number,
height: number,
color: string,
lineWidth = 2) {
const xPos = TRACK_SHELL_WIDTH + Math.floor(timeScale.timeToPx(time));
drawVerticalLine(ctx, xPos, height, color, lineWidth);
}
function drawVerticalLine(ctx: CanvasRenderingContext2D,
xPos: number,
height: number,
color: string,
lineWidth = 2) {
ctx.beginPath();
ctx.strokeStyle = color;
const prevLineWidth = ctx.lineWidth;
ctx.lineWidth = lineWidth;
ctx.moveTo(xPos, 0);
ctx.lineTo(xPos, height);
ctx.stroke();
ctx.closePath();
ctx.lineWidth = prevLineWidth;
}
export function drawVerticalSelection(ctx: CanvasRenderingContext2D,
timeScale: TimeScale,
timeStart: number,
timeEnd: number,
height: number,
color: string) {
const xStartPos = TRACK_SHELL_WIDTH +
Math.floor(timeScale.timeToPx(timeStart));
const xEndPos = TRACK_SHELL_WIDTH + Math.floor(timeScale.timeToPx(timeEnd));
ctx.fillStyle = color;
ctx.fillRect(xStartPos, 0, xEndPos - xStartPos, height);
drawVerticalLine(ctx, xStartPos, height, `rgba(52,69,150)`);
drawVerticalLine(ctx, xEndPos, height, `rgba(52,69,150)`);
}
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