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Calculating frames only when shown #5

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Calculating frames only when shown #5

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87c4248
Calculating frames only when needed
Shallowmallow Feb 13, 2024
dcd1aaf
Removing now useless onReady
Shallowmallow Feb 13, 2024
aab3acc
onShown is called twice, so do a check before showing the frame
Shallowmallow Feb 13, 2024
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19 changes: 15 additions & 4 deletions src/custom/ColorTable.hx
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
package custom;
import haxe.ui.events.UIEvent;
import haxe.io.Bytes;
import haxe.ui.Toolkit;
import haxe.ui.components.Canvas;
Expand All @@ -12,14 +13,24 @@ class ColorTable extends Canvas {
super();
componentGraphics.setProperty("html5.graphics.method", "canvas");
}

private override function onReady() {
super.onReady();
pixels = Bytes.alloc(Std.int(this.width * this.height * 4));

private var _showNextFrame = false;

@:bind(this, UIEvent.SHOWN)
private function onShown(_) {
if (_showNextFrame) return;
_showNextFrame = true;
if (pixels == null) pixels = Bytes.alloc(Std.int(this.width * this.height * 4));
frame();
}

@:bind(this, UIEvent.HIDDEN)
private function onHidden(_) {
_showNextFrame = false;
}

private function frame() {
if (!_showNextFrame) return;
drawColorTable(componentGraphics, Std.int(this.width), Std.int(this.height), 1);
}

Expand Down
15 changes: 13 additions & 2 deletions src/custom/DemoGraph.hx
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Original file line number Diff line number Diff line change
@@ -1,15 +1,25 @@
package custom;

import haxe.ui.events.UIEvent;
import haxe.ui.Toolkit;
import haxe.ui.components.Canvas;
import haxe.ui.geom.Point;
import haxe.ui.graphics.ComponentGraphics;

class DemoGraph extends Canvas {
public function new() {
super();
private var _showNextFrame = false;

@:bind(this, UIEvent.SHOWN)
private function onShown(_) {
if (_showNextFrame) return;
_showNextFrame = true;
frame();
}

@:bind(this, UIEvent.HIDDEN)
private function onHidden(_) {
_showNextFrame = false;
}

private static var offset1:Float = 0;
private static var offset1Direction = 1;
Expand All @@ -24,6 +34,7 @@ class DemoGraph extends Canvas {
private var _pointCDirection = 1;
private var _pointCOffset:Float = 0;
private function frame() {
if (!_showNextFrame) return;
componentGraphics.clear();

drawGrid(componentGraphics, 520, 420, 10);
Expand Down
23 changes: 18 additions & 5 deletions src/custom/MiniGraph.hx
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
package custom;

import haxe.ui.events.UIEvent;
import haxe.io.Bytes;
import haxe.ui.Toolkit;
import haxe.ui.components.Canvas;
Expand All @@ -12,13 +13,24 @@ class MiniGraph extends Canvas {
super();
componentGraphics.setProperty("html5.graphics.method", "canvas");
}

private override function onReady() {
super.onReady();
pixels = Bytes.alloc(Std.int(this.width * this.height * 4));
populateDataPoints();

private var _showNextFrame = false;

@:bind(this, UIEvent.SHOWN)
private function onShown(_) {
if (_showNextFrame) return;
_showNextFrame = true;
if (pixels == null) {
pixels = Bytes.alloc(Std.int(this.width * this.height * 4));
populateDataPoints();
}
frame();
}

@:bind(this, UIEvent.HIDDEN)
private function onHidden(_) {
_showNextFrame = false;
}

private function populateDataPoints() {
var cx = Std.int(this.width);
Expand Down Expand Up @@ -56,6 +68,7 @@ class MiniGraph extends Canvas {

var skipFrame:Bool = false; // lets just slow it down in a hacky way bu skipping every other "frame"
private function frame() {
if (!_showNextFrame) return;
if (skipFrame == true) {
skipFrame = false;
Toolkit.callLater(frame);
Expand Down
23 changes: 18 additions & 5 deletions src/custom/Noise.hx
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
package custom;

import haxe.ui.events.UIEvent;
import haxe.io.Bytes;
import haxe.ui.Toolkit;
import haxe.ui.components.Canvas;
Expand All @@ -15,16 +16,28 @@ class Noise extends Canvas {
super();
componentGraphics.setProperty("html5.graphics.method", "canvas");
}

private override function onReady() {
super.onReady();
pixels = Bytes.alloc(Std.int(this.width * this.height * 4));

private var _showNextFrame = false;

@:bind(this, UIEvent.SHOWN)
private function onShown(_) {
if (_showNextFrame) return;
_showNextFrame = true;
if (pixels == null) {
pixels = Bytes.alloc(Std.int(this.width * this.height * 4));
}
frame();
}

@:bind(this, UIEvent.HIDDEN)
private function onHidden(_) {
_showNextFrame = false;
}

var skipFrame:Bool = false; // lets just slow it down in a hacky way bu skipping every other "frame"
private function frame() {
if (skipFrame == true) {
if (!_showNextFrame) return;
if (skipFrame) {
skipFrame = false;
Toolkit.callLater(frame);
return;
Expand Down