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Code Issues Releases Wiki Activity

Clean code.

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Lars Jung
2019-03-13 00:08:27 +01:00
parent 341bf3e960
commit 294813ff26
3 changed files with 69 additions and 108 deletions
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2
dist/pagemap.min.js vendored
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@@ -1,2 +1,2 @@
/*! pagemap v0.5.0 - https://larsjung.de/pagemap/ */
!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.pagemap=e():t.pagemap=e()}(this,function(){return function(t){function e(n){if(o[n])return o[n].exports;var r=o[n]={exports:{},id:n,loaded:!1};return t[n].call(r.exports,r,r.exports,e),r.loaded=!0,r.exports}var o={};return e.m=t,e.c=o,e.p="",e(0)}([function(t,e,o){(function(e){"use strict";var n=o(1),r=e.window,i=r.document,c=i.querySelector("body"),u=function(t){return"rgba(0,0,0,"+t/100+")"},f={viewport:null,styles:{"header,footer,section,article":u(8),"h1,a":u(10),"h2,h3,h4":u(8)},back:u(2),view:u(5),drag:u(10),interval:null},l=function(t,e,o,n){return o.split(/\s+/).forEach(function(o){return t[e](o,n)})},s=function(t,e,o){return l(t,"addEventListener",e,o)},a=function(t,e,o){return l(t,"removeEventListener",e,o)};t.exports=function(t,e){var o=Object.assign({},f,e),u=t.getContext("2d"),l=function(){var e=t.clientWidth,o=t.clientHeight;return function(t,n){return Math.min(e/t,o/n)}}(),p=function(e,o){t.width=e,t.height=o,t.style.width=e+"px",t.style.height=o+"px"},h=o.viewport,d=function(t){return Array.from((h||i).querySelectorAll(t))},v=!1,y=void 0,g=void 0,w=void 0,x=void 0,m=void 0,b=function(t,e){e&&(u.beginPath(),u.rect(t.x,t.y,t.w,t.h),u.fillStyle=e,u.fill())},T=function(t){Object.keys(t).forEach(function(e){var o=t[e];d(e).forEach(function(t){b(n.ofElement(t).relativeTo(y),o)})})},E=function(){y=h?n.ofContent(h):n.ofDocument(),g=h?n.ofViewport(h):n.ofWindow(),w=l(y.w,y.h),p(y.w*w,y.h*w),u.setTransform(1,0,0,1,0,0),u.clearRect(0,0,t.width,t.height),u.scale(w,w),b(y.relativeTo(y),o.back),T(o.styles),b(g.relativeTo(y),v?o.drag:o.view)},O=function(e){e.preventDefault();var o=n.ofViewport(t),i=(e.pageX-o.x)/w-g.w*x,c=(e.pageY-o.y)/w-g.h*m;h?(h.scrollLeft=i,h.scrollTop=c):r.scrollTo(i,c),E()},W=function e(o){v=!1,t.style.cursor="pointer",c.style.cursor="auto",a(r,"mousemove",O),a(r,"mouseup",e),O(o)},j=function(e){v=!0;var o=n.ofViewport(t),i=g.relativeTo(y);x=((e.pageX-o.x)/w-i.x)/i.w,m=((e.pageY-o.y)/w-i.y)/i.h,(x<0||x>1||m<0||m>1)&&(x=.5,m=.5),t.style.cursor="crosshair",c.style.cursor="crosshair",s(r,"mousemove",O),s(r,"mouseup",W),O(e)},H=function(){t.style.cursor="pointer",s(t,"mousedown",j),s(h||r,"load resize scroll",E),o.interval>0&&setInterval(function(){return E()},o.interval),E()};return H(),{redraw:E}}}).call(e,function(){return this}())},function(t,e){(function(e){"use strict";var o=e.window,n=o.document.documentElement,r=t.exports=function(t,e,o,n){return Object.assign(Object.create(r.prototype),{x:t,y:e,w:o,h:n})};r.prototype={constructor:r,relativeTo:function(){var t=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{x:0,y:0};return r(this.x-t.x,this.y-t.y,this.w,this.h)}},r.ofDocument=function(){return r(0,0,n.scrollWidth,n.scrollHeight)},r.ofWindow=function(){return r(o.pageXOffset,o.pageYOffset,n.clientWidth,n.clientHeight)};var i=function(t){var e=t.getBoundingClientRect();return{x:e.left+o.pageXOffset,y:e.top+o.pageYOffset}};r.ofElement=function(t){var e=i(t),o=e.x,n=e.y;return r(o,n,t.offsetWidth,t.offsetHeight)},r.ofViewport=function(t){var e=i(t),o=e.x,n=e.y;return r(o+t.clientLeft,n+t.clientTop,t.clientWidth,t.clientHeight)},r.ofContent=function(t){var e=i(t),o=e.x,n=e.y;return r(o+t.clientLeft-t.scrollLeft,n+t.clientTop-t.scrollTop,t.scrollWidth,t.scrollHeight)}}).call(e,function(){return this}())}])});
!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.pagemap=e():t.pagemap=e()}(this,function(){return function(t){function e(r){if(n[r])return n[r].exports;var o=n[r]={exports:{},id:r,loaded:!1};return t[r].call(o.exports,o,o.exports,e),o.loaded=!0,o.exports}var n={};return e.m=t,e.c=n,e.p="",e(0)}([function(t,e){(function(e){"use strict";var n=e.window,r=n.document,o=r.documentElement,i=r.querySelector("body"),c=function(t){return"rgba(0,0,0,"+t/100+")"},u={viewport:null,styles:{"header,footer,section,article":c(8),"h1,a":c(10),"h2,h3,h4":c(8)},back:c(2),view:c(5),drag:c(10),interval:null},l=function(t,e,n,r){return n.split(/\s+/).forEach(function(n){return t[e](n,r)})},f=function(t,e,n){return l(t,"addEventListener",e,n)},s=function(t,e,n){return l(t,"removeEventListener",e,n)},a=function(t,e,n,r){return{x:t,y:e,w:n,h:r}},h=function(t){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{x:0,y:0};return a(t.x-e.x,t.y-e.y,t.w,t.h)},p=function(){return a(0,0,o.scrollWidth,o.scrollHeight)},d=function(){return a(n.pageXOffset,n.pageYOffset,o.clientWidth,o.clientHeight)},v=function(t){var e=t.getBoundingClientRect();return{x:e.left+n.pageXOffset,y:e.top+n.pageYOffset}},y=function(t){var e=v(t),n=e.x,r=e.y;return a(n,r,t.offsetWidth,t.offsetHeight)},g=function(t){var e=v(t),n=e.x,r=e.y;return a(n+t.clientLeft,r+t.clientTop,t.clientWidth,t.clientHeight)},x=function(t){var e=v(t),n=e.x,r=e.y;return a(n+t.clientLeft-t.scrollLeft,r+t.clientTop-t.scrollTop,t.scrollWidth,t.scrollHeight)};t.exports=function(t,e){var o=Object.assign({},u,e),c=t.getContext("2d"),l=function(){var e=t.clientWidth,n=t.clientHeight;return function(t,r){return Math.min(e/t,n/r)}}(),a=function(e,n){t.width=e,t.height=n,t.style.width=e+"px",t.style.height=n+"px"},v=o.viewport,m=function(t){return Array.from((v||r).querySelectorAll(t))},w=!1,b=void 0,E=void 0,H=void 0,L=void 0,O=void 0,T=function(t,e){e&&(c.beginPath(),c.rect(t.x,t.y,t.w,t.h),c.fillStyle=e,c.fill())},W=function(t){Object.keys(t).forEach(function(e){var n=t[e];m(e).forEach(function(t){T(h(y(t),b),n)})})},j=function(){b=v?x(v):p(),E=v?g(v):d(),H=l(b.w,b.h),a(b.w*H,b.h*H),c.setTransform(1,0,0,1,0,0),c.clearRect(0,0,t.width,t.height),c.scale(H,H),T(h(b,b),o.back),W(o.styles),T(h(E,b),w?o.drag:o.view)},X=function(e){e.preventDefault();var r=g(t),o=(e.pageX-r.x)/H-E.w*L,i=(e.pageY-r.y)/H-E.h*O;v?(v.scrollLeft=o,v.scrollTop=i):n.scrollTo(o,i),j()},Y=function e(r){w=!1,t.style.cursor="pointer",i.style.cursor="auto",s(n,"mousemove",X),s(n,"mouseup",e),X(r)},k=function(e){w=!0;var r=g(t),o=h(E,b);L=((e.pageX-r.x)/H-o.x)/o.w,O=((e.pageY-r.y)/H-o.y)/o.h,(L<0||L>1||O<0||O>1)&&(L=.5,O=.5),t.style.cursor="crosshair",i.style.cursor="crosshair",f(n,"mousemove",X),f(n,"mouseup",Y),X(e)},S=function(){t.style.cursor="pointer",f(t,"mousedown",k),f(v||n,"load resize scroll",j),o.interval>0&&setInterval(function(){return j()},o.interval),j()};return S(),{redraw:j}}}).call(e,function(){return this}())}])});

108
src/pagemap.js
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@@ -1,7 +1,6 @@
const Rect = require('./rect');
const win = global.window;
const doc = win.document;
const doc_el = doc.documentElement;
const body = doc.querySelector('body');
const black = pc => `rgba(0,0,0,${pc / 100})`;
@@ -22,18 +21,48 @@ const _listener = (el, method, types, fn) => types.split(/\s+/).forEach(type =>
const on = (el, types, fn) => _listener(el, 'addEventListener', types, fn);
const off = (el, types, fn) => _listener(el, 'removeEventListener', types, fn);
const Rect = (x, y, w, h) => { return {x, y, w, h}; };
const rect_rel_to = (rect, pos = {x: 0, y: 0}) => Rect(rect.x - pos.x, rect.y - pos.y, rect.w, rect.h);
const rect_of_doc = () => {
return Rect(0, 0, doc_el.scrollWidth, doc_el.scrollHeight);
};
const rect_of_win = () => {
return Rect(win.pageXOffset, win.pageYOffset, doc_el.clientWidth, doc_el.clientHeight);
};
const el_get_offset = el => {
const br = el.getBoundingClientRect();
return {x: br.left + win.pageXOffset, y: br.top + win.pageYOffset};
};
const rect_of_el = el => {
const {x, y} = el_get_offset(el);
return Rect(x, y, el.offsetWidth, el.offsetHeight);
};
const rect_of_viewport = el => {
const {x, y} = el_get_offset(el);
return Rect(x + el.clientLeft, y + el.clientTop, el.clientWidth, el.clientHeight);
};
const rect_of_content = el => {
const {x, y} = el_get_offset(el);
return Rect(x + el.clientLeft - el.scrollLeft, y + el.clientTop - el.scrollTop, el.scrollWidth, el.scrollHeight);
};
module.exports = (canvas, options) => {
const settings = Object.assign({}, defaults, options);
const context = canvas.getContext('2d');
const calcScale = (() => {
const calc_scale = (() => {
const width = canvas.clientWidth;
const height = canvas.clientHeight;
return (w, h) => Math.min(width / w, height / h);
})();
const resizeCanvas = (w, h) => {
const resize_canvas = (w, h) => {
canvas.width = w;
canvas.height = h;
canvas.style.width = `${w}px`;
@@ -45,13 +74,13 @@ module.exports = (canvas, options) => {
let drag = false;
let rootRect;
let viewRect;
let root_rect;
let view_rect;
let scale;
let dragRx;
let dragRy;
let drag_rx;
let drag_ry;
const drawRect = (rect, col) => {
const draw_rect = (rect, col) => {
if (!col) {
return;
}
@@ -61,36 +90,36 @@ module.exports = (canvas, options) => {
context.fill();
};
const applyStyles = styles => {
const apply_styles = styles => {
Object.keys(styles).forEach(sel => {
const col = styles[sel];
find(sel).forEach(el => {
drawRect(Rect.ofElement(el).relativeTo(rootRect), col);
draw_rect(rect_rel_to(rect_of_el(el), root_rect), col);
});
});
};
const draw = () => {
rootRect = viewport ? Rect.ofContent(viewport) : Rect.ofDocument();
viewRect = viewport ? Rect.ofViewport(viewport) : Rect.ofWindow();
scale = calcScale(rootRect.w, rootRect.h);
root_rect = viewport ? rect_of_content(viewport) : rect_of_doc();
view_rect = viewport ? rect_of_viewport(viewport) : rect_of_win();
scale = calc_scale(root_rect.w, root_rect.h);
resizeCanvas(rootRect.w * scale, rootRect.h * scale);
resize_canvas(root_rect.w * scale, root_rect.h * scale);
context.setTransform(1, 0, 0, 1, 0, 0);
context.clearRect(0, 0, canvas.width, canvas.height);
context.scale(scale, scale);
drawRect(rootRect.relativeTo(rootRect), settings.back);
applyStyles(settings.styles);
drawRect(viewRect.relativeTo(rootRect), drag ? settings.drag : settings.view);
draw_rect(rect_rel_to(root_rect, root_rect), settings.back);
apply_styles(settings.styles);
draw_rect(rect_rel_to(view_rect, root_rect), drag ? settings.drag : settings.view);
};
const onDrag = ev => {
const on_drag = ev => {
ev.preventDefault();
const cr = Rect.ofViewport(canvas);
const x = (ev.pageX - cr.x) / scale - viewRect.w * dragRx;
const y = (ev.pageY - cr.y) / scale - viewRect.h * dragRy;
const cr = rect_of_viewport(canvas);
const x = (ev.pageX - cr.x) / scale - view_rect.w * drag_rx;
const y = (ev.pageY - cr.y) / scale - view_rect.h * drag_ry;
if (viewport) {
viewport.scrollLeft = x;
@@ -101,38 +130,37 @@ module.exports = (canvas, options) => {
draw();
};
const onDragEnd = ev => {
const on_drag_end = ev => {
drag = false;
canvas.style.cursor = 'pointer';
body.style.cursor = 'auto';
off(win, 'mousemove', onDrag);
off(win, 'mouseup', onDragEnd);
onDrag(ev);
off(win, 'mousemove', on_drag);
off(win, 'mouseup', on_drag_end);
on_drag(ev);
};
const onDragStart = ev => {
const on_drag_start = ev => {
drag = true;
const cr = Rect.ofViewport(canvas);
const vr = viewRect.relativeTo(rootRect);
dragRx = ((ev.pageX - cr.x) / scale - vr.x) / vr.w;
dragRy = ((ev.pageY - cr.y) / scale - vr.y) / vr.h;
if (dragRx < 0 || dragRx > 1 || dragRy < 0 || dragRy > 1) {
dragRx = 0.5;
dragRy = 0.5;
const cr = rect_of_viewport(canvas);
const vr = rect_rel_to(view_rect, root_rect);
drag_rx = ((ev.pageX - cr.x) / scale - vr.x) / vr.w;
drag_ry = ((ev.pageY - cr.y) / scale - vr.y) / vr.h;
if (drag_rx < 0 || drag_rx > 1 || drag_ry < 0 || drag_ry > 1) {
drag_rx = 0.5;
drag_ry = 0.5;
}
canvas.style.cursor = 'crosshair';
body.style.cursor = 'crosshair';
on(win, 'mousemove', onDrag);
on(win, 'mouseup', onDragEnd);
onDrag(ev);
on(win, 'mousemove', on_drag);
on(win, 'mouseup', on_drag_end);
on_drag(ev);
};
const init = () => {
canvas.style.cursor = 'pointer';
on(canvas, 'mousedown', onDragStart);
on(canvas, 'mousedown', on_drag_start);
on(viewport || win, 'load resize scroll', draw);
if (settings.interval > 0) {
setInterval(() => draw(), settings.interval);

67
src/rect.js
View File

@@ -1,67 +0,0 @@
const win = global.window;
const docEl = win.document.documentElement;
const Rect = module.exports = (x, y, w, h) => {
return Object.assign(Object.create(Rect.prototype), {
x, y, w, h
});
};
Rect.prototype = {
constructor: Rect,
relativeTo(pos = {x: 0, y: 0}) {
return Rect(this.x - pos.x, this.y - pos.y, this.w, this.h);
}
};
Rect.ofDocument = () => {
return Rect(0, 0, docEl.scrollWidth, docEl.scrollHeight);
};
Rect.ofWindow = () => {
return Rect(
win.pageXOffset,
win.pageYOffset,
docEl.clientWidth,
docEl.clientHeight
);
};
const getOffset = el => {
const br = el.getBoundingClientRect();
return {
x: br.left + win.pageXOffset,
y: br.top + win.pageYOffset
};
};
Rect.ofElement = el => {
const {x, y} = getOffset(el);
return Rect(
x,
y,
el.offsetWidth,
el.offsetHeight
);
};
Rect.ofViewport = el => {
const {x, y} = getOffset(el);
return Rect(
x + el.clientLeft,
y + el.clientTop,
el.clientWidth,
el.clientHeight
);
};
Rect.ofContent = el => {
const {x, y} = getOffset(el);
return Rect(
x + el.clientLeft - el.scrollLeft,
y + el.clientTop - el.scrollTop,
el.scrollWidth,
el.scrollHeight
);
};