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hourly graph uses image with internal canvas for drawing

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This commit is contained in:
Matt Walsh
2022-12-08 09:23:26 -06:00
parent 64fb06d7b4
commit 69d14236f1
5 changed files with 52 additions and 49 deletions
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19
server/scripts/modules/hourly-graph.mjs
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@@ -42,18 +42,20 @@ class HourlyGraph extends WeatherDisplay {
}
drawCanvas() {
if (!this.canvas) this.canvas = this.elem.querySelector('.chart canvas');
if (!this.image) this.image = this.elem.querySelector('.chart img');
// get available space
const boundingRect = this.canvas.getBoundingClientRect();
const availableWidth = boundingRect.width;
const availableHeight = boundingRect.height;
const availableWidth = 532;
const availableHeight = 285;
this.canvas.width = availableWidth;
this.canvas.height = availableHeight;
this.image.width = availableWidth;
this.image.height = availableHeight;
// get context
const ctx = this.canvas.getContext('2d');
const canvas = document.createElement('canvas');
canvas.width = availableWidth;
canvas.height = availableHeight;
const ctx = canvas.getContext('2d');
ctx.imageSmoothingEnabled = false;
// calculate time scale
@@ -97,6 +99,9 @@ class HourlyGraph extends WeatherDisplay {
this.elem.querySelector('.y-axis .l-2').innerHTML = midTemp;
this.elem.querySelector('.y-axis .l-3').innerHTML = minTemp;
// set the image source
this.image.src = canvas.toDataURL();
super.drawCanvas();
this.finishDraw();
}

2
server/scripts/modules/radar.mjs
View File

@@ -367,8 +367,6 @@ class Radar extends WeatherDisplay {
}
RadarContext.putImageData(RadarImageData, 0, 0);
// MapContext.drawImage(RadarContext.canvas, 0, 0);
}
static mergeDopplerRadarImage(mapContext, radarContext) {