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@@ -33,7 +33,7 @@ const canvas = {
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width: 0,
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height: 0,
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images: [],
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- level: 4
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+ level: 0
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};
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const mouse = {
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@@ -138,20 +138,31 @@ const draw_ = function(ctx, isize, url, level, images, id, coords) {
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}
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};
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+const init = function(c) {
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+ const image = new Image();
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+ image.src = canvas.url + "0".repeat((canvas.level + 1) * 2)
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+
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+ image.onload = () => {
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+ canvas.width = image.width;
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+ canvas.height = image.height;
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+ canvas.images = draw(c.getContext("2d"), canvas.boundary, canvas,
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+ canvas.url, canvas.level, canvas.images, {x: 0, y: 0});
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+ }
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+}
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+
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const main = function() {
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const c = document.getElementById("canvas");
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- c.setAttribute("width", 1000); // window.getComputedStyle(document.body).getPropertyValue("width"));
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- c.setAttribute("height", 1000); // window.getComputedStyle(document.body).getPropertyValue("height"));
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+ c.setAttribute("width", window.getComputedStyle(document.body).getPropertyValue("width"));
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+ c.setAttribute("height", window.getComputedStyle(document.body).getPropertyValue("height"));
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document.addEventListener("mousedown", (e) => {
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- console.log(e);
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- if (c === document.activeElement && e.buttons === 1) {
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+ if (c === document.activeElement && e.button === 0) {
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mouse.prevX = e.clientX;
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mouse.prevY = e.clientY;
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}
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});
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document.addEventListener("mouseup", (e) => {
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- if (c === document.activeElement) {
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+ if (c === document.activeElement && e.button === 0) {
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mouse.x = e.clientX;
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mouse.y = e.clientY;
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@@ -160,13 +171,12 @@ const main = function() {
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}
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});
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- const image = new Image();
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- image.src = canvas.url + "0".repeat((canvas.level + 1) * 2)
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+ document.addEventListener("wheel", (e) => {
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+ if (c === document.activeElement) {
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+ canvas.level += e.deltaY > 0 ? 1 : -1;
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+ init(c);
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+ }
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+ });
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- image.onload = () => {
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- canvas.width = image.width;
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- canvas.height = image.height;
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- canvas.images = draw(c.getContext("2d"), canvas.boundary, canvas,
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- canvas.url, canvas.level, canvas.images, {x: 0, y: 0});
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- }
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+ init(c);
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};
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