| 38 | * @param game - the game application instance triggering the resize |
| 39 | */ |
| 40 | export function onresize(game: Application): void { |
| 41 | const renderer = game.renderer; |
| 42 | const settings = renderer.settings as any; |
| 43 | let scaleX = settings.scale, |
| 44 | scaleY = settings.scale; |
| 45 | let nodeBounds; |
| 46 | |
| 47 | if (settings.autoScale) { |
| 48 | // set max the canvas max size if CSS values are defined |
| 49 | let canvasMaxWidth = Infinity; |
| 50 | let canvasMaxHeight = Infinity; |
| 51 | |
| 52 | if (globalThis.getComputedStyle) { |
| 53 | const style = globalThis.getComputedStyle(renderer.getCanvas(), null); |
| 54 | canvasMaxWidth = parseInt(style.maxWidth, 10) || Infinity; |
| 55 | canvasMaxHeight = parseInt(style.maxHeight, 10) || Infinity; |
| 56 | } |
| 57 | |
| 58 | if (typeof game.settings.scaleTarget !== "undefined") { |
| 59 | // get the bounds of the given scale target |
| 60 | nodeBounds = device.getElementBounds(game.settings.scaleTarget); |
| 61 | } else { |
| 62 | // get the maximum canvas size within the parent div containing the canvas container |
| 63 | nodeBounds = device.getParentBounds(game.getParentElement()); |
| 64 | } |
| 65 | |
| 66 | const _max_width = Math.min(canvasMaxWidth, nodeBounds.width); |
| 67 | const _max_height = Math.min(canvasMaxHeight, nodeBounds.height); |
| 68 | |
| 69 | // calculate final canvas width & height |
| 70 | const screenRatio = _max_width / _max_height; |
| 71 | |
| 72 | if ( |
| 73 | (settings.scaleMethod === "fill-min" && |
| 74 | screenRatio > renderer.designRatio) || |
| 75 | (settings.scaleMethod === "fill-max" && |
| 76 | screenRatio < renderer.designRatio) || |
| 77 | settings.scaleMethod === "flex-width" |
| 78 | ) { |
| 79 | // resize the display canvas to fill the parent container |
| 80 | const sWidth = Math.min(canvasMaxWidth, settings.height * screenRatio); |
| 81 | scaleX = scaleY = _max_width / sWidth; |
| 82 | renderer.resize(Math.floor(sWidth), settings.height); |
| 83 | } else if ( |
| 84 | (settings.scaleMethod === "fill-min" && |
| 85 | screenRatio < renderer.designRatio) || |
| 86 | (settings.scaleMethod === "fill-max" && |
| 87 | screenRatio > renderer.designRatio) || |
| 88 | settings.scaleMethod === "flex-height" |
| 89 | ) { |
| 90 | // resize the display canvas to fill the parent container |
| 91 | const sHeight = Math.min( |
| 92 | canvasMaxHeight, |
| 93 | settings.width * (_max_height / _max_width), |
| 94 | ); |
| 95 | scaleX = scaleY = _max_height / sHeight; |
| 96 | renderer.resize(settings.width, Math.floor(sHeight)); |
| 97 | } else if (settings.scaleMethod === "flex") { |