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// Copyright (C) 2018 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use size 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 m from 'mithril';
import {timeToString} from '../common/time';
import {TRACK_SHELL_WIDTH} from './css_constants';
import {globals} from './globals';
import {
TickGenerator,
TickType,
timeScaleForVisibleWindow,
} from './gridline_helper';
import {Panel, PanelSize} from './panel';
export class TimeAxisPanel extends Panel {
view() {
return m('.time-axis-panel');
}
renderCanvas(ctx: CanvasRenderingContext2D, size: PanelSize) {
ctx.fillStyle = '#999';
ctx.font = '10px Roboto Condensed';
ctx.textAlign = 'left';
const startTime = timeToString(globals.state.traceTime.startSec);
ctx.fillText(startTime + ' +', 6, 11);
// Draw time axis.
const timeScale = timeScaleForVisibleWindow(TRACK_SHELL_WIDTH, size.width);
if (timeScale.timeSpan.duration > 0 && timeScale.widthPx > 0) {
const tickGen = new TickGenerator(timeScale);
for (const {type, time, position} of tickGen) {
if (type === TickType.MAJOR) {
ctx.fillRect(position, 0, 1, size.height);
ctx.fillText(time.toFixed(tickGen.digits) + ' s', position + 5, 10);
}
}
}
ctx.fillRect(TRACK_SHELL_WIDTH - 2, 0, 2, size.height);
}
}
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