[英]Increasing the highlight of table rows & columns by mouse drag on specific cell
我想增加表行和列的突出显示。 当我拖动突出显示部分的最后一个单元格时,我想增加行和列及其标题的突出显示。 我使用以下代码突出显示:
<table id="table-1">
<thead>
<tr>
<th></th>
<th>Col1</th>
<th>Col2</th>
<th>Col3</th>
<th>Col4</th>
<th>Col5</th>
<th>Col6</th>
<th>Col7</th>
<th>Col8</th>
<th>Col9</th>
<th>Col10</th>
</tr>
</thead>
<tbody>
<tr>
<th>Row1</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row3</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row3</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row4</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row5</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row6</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row7</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row8</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row9</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row10</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
</tbody>
</table>
.hi_td {background-color:yellow;}
.hi_th {background-color:gray;}
.autofill-cover{
cursor:crosshair;
}
table{
user-select:none;
-webkit-user-select:none;
}
.hi_td.hi_top{
border-top:2px solid blue;
}
.hi_td.hi_bottom{
border-bottom:2px solid blue;
}
.hi_td.hi_left{
border-left:2px solid blue;
}
.hi_td.hi_right{
border-right:2px solid blue;
}
mdown = false;
msel = [
[],
[]
];
var funcfalse = function () {
console.log('selsta');
}
var getpos = function (o, i) {
var o = $(o); // get position of current cell
msel[0][i] = o.parent().index(); // set row
msel[1][i] = o.index(); // set column
return msel;
}
var modsel = function (o) {
var numsrt = function (a, b) {
return a - b;
}
var r = getpos(o, 1)[0].slice(0);
r.sort(numsrt);
var c = msel[1].slice(0);
c.sort(numsrt);
$trs = $('#table-1 tbody tr');
$('td', $trs).removeClass('hi_td');
$trs.slice(r[0], r[1] + 1).each(function () {
$('td', this).slice(c[0] - 1, c[1]).addClass('hi_td');
});
$("#table-1 thead tr th").removeClass('hi_th')
.slice(c[0], c[1] + 1).addClass('hi_th');
$("#table-1 tbody tr th").removeClass('hi_th')
.slice(r[0], r[1] + 1).addClass('hi_th');
}
var hover = function (ev) {
if (mdown) modsel(this);
}
var mo = function (ev) {
$('td').removeClass('hi_top hi_bottom hi_left hi_right');
var allHighlighted = $('.hi_td');
mdown = (ev.type == 'mousedown') ? 1 : 0;
getpos(this, 1 - mdown);
if (mdown) {
modsel(this);
} else {
allHighlighted.each(function (i, item) {
var index = $(item).index();
console.log(index);
var b = $("#table-1 td.hi_td:last").addClass("autofill-cover");
if (!$(item).prev().hasClass('hi_td')) {
$(item).addClass('hi_left'); //$(item).addClass('hi_right');
}
if (!$(item).next().hasClass('hi_td')) {
$(item).addClass('hi_right');
}
if (!$(item).closest('tr').prev().find('td:nth-child(' + (index + 1) + ')').hasClass('hi_td')) {
$(item).addClass('hi_top');
}
if (!$(item).closest('tr').next().find('td:nth-child(' + (index + 1) + ')').hasClass('hi_td')) {
$(item).addClass('hi_bottom');
}
});
}
}
var $tbl = $("#table-1"),
$tblHead = $("#table-1 thead tr");
$("tbody td", $tbl)
.on({
"mousedown": mo,
"mouseup": mo,
"mouseenter": hover,
"selectstart": funcfalse
});
如何解决这个问题呢? 我的代码的Jsfiddle链接: http : //jsfiddle.net/RmAqP/31/
我已经开始重写某些部分,因此我可以阅读代码并最终根据您的第一个版本重写整个过程。 希望你不要介意。
检查更新的JSFiddle: http : //jsfiddle.net/blvz/MZufz/
HTML (不变)
<table id="table-1">
<thead>
<tr>
<th></th>
<th>Col1</th>
<th>Col2</th>
<th>Col3</th>
<th>Col4</th>
<th>Col5</th>
<th>Col6</th>
<th>Col7</th>
<th>Col8</th>
<th>Col9</th>
<th>Col10</th>
</tr>
</thead>
<tbody>
<tr>
<th>Row1</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row3</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row3</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row4</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row5</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row6</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row7</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row8</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row9</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
<tr>
<th>Row10</th>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
<td>info</td>
</tr>
</tbody>
</table>
CSS (稍有变化)
td.highlighted { background-color: yellow; }
thead th.highlighted:not(:first-child), tbody th.highlighted { background-color: gray; }
.autofill-cover{
cursor:crosshair;
}
table{
user-select:none;
-webkit-user-select:none;
}
td.highlighted.top{
border-top:2px solid blue;
}
td.highlighted.bottom{
border-bottom:2px solid blue;
}
td.highlighted.left{
border-left:2px solid blue;
}
td.highlighted.right{
border-right:2px solid blue;
}
JavaScript (主要重写)
var SELECTION_START = 0;
var SELECTION_END = 1;
var selection = [getCellPos(), getCellPos()];
$tbl = $("#table-1");
function startSelection(event) {
if (event.button === 2) { return false; }
clearSelectionBorders();
if (this !== $tbl.find('td.highlighted').last()[0]) {
setSelection(this, SELECTION_START);
}
setSelection(this, SELECTION_END);
$tbl.find("tr > *").mouseenter(moveSelection);
}
function stopSelection() {
applySelectionHighlight();
applySelectionBorders();
$tbl.find("tr > *").off('mouseenter');
}
function moveSelection() {
setSelection(this, SELECTION_END);
}
function setSelection(element, position) {
element = $(element);
var cellPos = getCellPos(element);
selection[position] = cellPos;
applySelectionHighlight();
}
function getCellPos(element) {
element = $(element);
if (element.length) return {
col: element.index(),
row: element.parent().parent().is($tbl.find('thead')) ? 0 : element.parent().index() + 1
};
return {
row: -1,
col: -1
};
}
function getSelectionRect() {
var rect = {
x: 0,
y: 0,
width: 0,
height: 0
};
rect.x = Math.min(selection[SELECTION_START].col, selection[SELECTION_END].col);
rect.y = Math.min(selection[SELECTION_START].row, selection[SELECTION_END].row);
rect.width = Math.max(selection[SELECTION_START].col, selection[SELECTION_END].col) + 1;
rect.height = Math.max(selection[SELECTION_START].row, selection[SELECTION_END].row) + 1;
if (rect.x === 0 && rect.width === 1) rect.width = $tbl.find('tr:first-child > *').length;
if (rect.y === 0 && rect.height === 1) rect.height = $tbl.find('tr').length;
return rect;
}
function applySelectionHighlight() {
clearSelectionHighlight();
var selectionRect = getSelectionRect();
$tbl.find('thead tr > *').slice(selectionRect.x, selectionRect.width).addClass('highlighted');
$tbl.find('tr').slice(selectionRect.y, selectionRect.height).each(function () {
$(this).find('> th:first-child').addClass('highlighted');
$(this).find('> *').slice(selectionRect.x, selectionRect.width).addClass('highlighted');
});
}
function clearSelectionHighlight() {
$tbl.find('tr > *').removeClass('highlighted');
}
function applySelectionBorders() {
var allHighlighted = $tbl.find('.highlighted');
allHighlighted.each(function (i, item) {
var index = $(item).index();
var b = $tbl.find("td.highlighted:last").addClass("autofill-cover");
if (!$(item).prev().is('td.highlighted')) {
$(item).addClass('left');
}
if (!$(item).next().is('td.highlighted')) {
$(item).addClass('right');
}
if (!$(item).closest('tr').prev().find('td:nth-child(' + (index + 1) + ')').hasClass('highlighted')) {
$(item).addClass('top');
}
if (!$(item).closest('tr').next().find('td:nth-child(' + (index + 1) + ')').hasClass('highlighted')) {
$(item).addClass('bottom');
}
});
}
function clearSelectionBorders() {
$tbl.find('td').removeClass('top bottom left right');
}
function clearAll() {
selection = [getCellPos(), getCellPos()];
clearSelectionHighlight()
clearSelectionBorders();
}
$tbl.find("tr > *").mousedown(startSelection);
$(window).mouseup(stopSelection);
$(document).mousedown(function (event) {
if ($(event.target).parents($tbl).length === 0) clearAll();
});
我希望这可以解决您的问题,或者至少可以帮助您解决问题。
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