Bootstrap 3超大(xl)列 [英] Bootstrap 3 extra large (xl) columns

问题描述

在Bootstrap的LESS构建中，有人可以告诉我如何添加第五个设备尺寸(超大(col-xl-#))吗?

解决方案

您可以创建另一个less文件(例如bootstrapxl.less)，其中包含以下代码并编译该文件:

@import "bootstrap.less";

// XLarge screen
@screen-xlg:                  1600px;
@screen-xlg-min:              @screen-xlg;
@screen-xlg-hughdesktop:      @screen-xlg-min;

// So media queries don't overlap when required, provide a maximum
@screen-lg-max:              (@screen-xlg-min - 1);

//== Container sizes
// Large screen / wide desktop
@container-xlarge-desktop:      ((1540px + @grid-gutter-width));
@container-xlg:                 @container-xlarge-desktop;

// Container widths
//
// Set the container width, and override it for fixed navbars in media queries.

.container {
  @media (min-width: @screen-xlg-min) {
    width: @container-xlg;
  }
}

.make-grid-xlgcolumns() {
  // Common styles for all sizes of grid columns, widths 1-12
  .col(@index) when (@index = 1) { // initial
    @item: ~".col-xlg-@{index}";
    .col((@index + 1), @item);
  }
  .col(@index, @list) when (@index =< @grid-columns) { // general; "=<" isn't a typo
    @item: ~".col-xlg-@{index}";
    .col((@index + 1), ~"@{list}, @{item}");
  }
  .col(@index, @list) when (@index > @grid-columns) { // terminal
    @{list} {
      position: relative;
      // Prevent columns from collapsing when empty
      min-height: 1px;
      // Inner gutter via padding
      padding-left:  (@grid-gutter-width / 2);
      padding-right: (@grid-gutter-width / 2);
    }
  }
  .col(1); // kickstart it
}
.make-grid-xlgcolumns();
.make-grid(xlg);

// Generate the large columns
.make-xlg-column(@columns; @gutter: @grid-gutter-width) {
  position: relative;
  min-height: 1px;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);

  @media (min-width: @screen-xlg-min) {
    float: left;
    width: percentage((@columns / @grid-columns));
  }
}
.make-xlg-column-offset(@columns) {
  @media (min-width: @screen-xlg-min) {
    margin-left: percentage((@columns / @grid-columns));
  }
}
.make-xlg-column-push(@columns) {
  @media (min-width: @screen-xlg-min) {
    left: percentage((@columns / @grid-columns));
  }
}
.make-xlg-column-pull(@columns) {
  @media (min-width: @screen-xlg-min) {
    right: percentage((@columns / @grid-columns));
  }
}

请注意，除了上面的代码中的.make-grid-xlgcolumns mixin外，您还可以通过添加.col-xlg-类前缀来修改less/minins/grid-framework.less文件中的.make-grid-columns() mixin.

从BS 3.2.0开始，您应该使用自动前缀程序来确保新的编译版本具有与原始编译版本相同的浏览器支持，另请参见: https://stackoverflow.com/a/26963773/1596547 添加与默认网格重叠的列或网格. /p>

In Bootstrap's LESS build can someone please tell me how to add a fifth device size, extra large (col-xl-#)?

解决方案

You can create a other less file (for instance bootstrapxl.less), containing the following code and compile that file:

@import "bootstrap.less";

// XLarge screen
@screen-xlg:                  1600px;
@screen-xlg-min:              @screen-xlg;
@screen-xlg-hughdesktop:      @screen-xlg-min;

// So media queries don't overlap when required, provide a maximum
@screen-lg-max:              (@screen-xlg-min - 1);

//== Container sizes
// Large screen / wide desktop
@container-xlarge-desktop:      ((1540px + @grid-gutter-width));
@container-xlg:                 @container-xlarge-desktop;

// Container widths
//
// Set the container width, and override it for fixed navbars in media queries.

.container {
  @media (min-width: @screen-xlg-min) {
    width: @container-xlg;
  }
}

.make-grid-xlgcolumns() {
  // Common styles for all sizes of grid columns, widths 1-12
  .col(@index) when (@index = 1) { // initial
    @item: ~".col-xlg-@{index}";
    .col((@index + 1), @item);
  }
  .col(@index, @list) when (@index =< @grid-columns) { // general; "=<" isn't a typo
    @item: ~".col-xlg-@{index}";
    .col((@index + 1), ~"@{list}, @{item}");
  }
  .col(@index, @list) when (@index > @grid-columns) { // terminal
    @{list} {
      position: relative;
      // Prevent columns from collapsing when empty
      min-height: 1px;
      // Inner gutter via padding
      padding-left:  (@grid-gutter-width / 2);
      padding-right: (@grid-gutter-width / 2);
    }
  }
  .col(1); // kickstart it
}
.make-grid-xlgcolumns();
.make-grid(xlg);

// Generate the large columns
.make-xlg-column(@columns; @gutter: @grid-gutter-width) {
  position: relative;
  min-height: 1px;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);

  @media (min-width: @screen-xlg-min) {
    float: left;
    width: percentage((@columns / @grid-columns));
  }
}
.make-xlg-column-offset(@columns) {
  @media (min-width: @screen-xlg-min) {
    margin-left: percentage((@columns / @grid-columns));
  }
}
.make-xlg-column-push(@columns) {
  @media (min-width: @screen-xlg-min) {
    left: percentage((@columns / @grid-columns));
  }
}
.make-xlg-column-pull(@columns) {
  @media (min-width: @screen-xlg-min) {
    right: percentage((@columns / @grid-columns));
  }
}

Notice that instead of the .make-grid-xlgcolumns mixin in the above code you could also modify the .make-grid-columns() mixin in the less/minins/grid-framework.less file by adding the .col-xlg- class prefix.

Since BS 3.2.0 you should use the autoprefixer to make sure that your new compiled version has the same browser support as the original compiled version, see also: https://github.com/twbs/bootstrap/issues/13620 To run the autofixer for your new code replace the bootstrap.less file reference with a reference to your new bootstrapxl.less in Gruntfile.js and run grunt dist after your changes.

update

Please notice that the above solution only works when you add column classes for a larger grid. See https://stackoverflow.com/a/26963773/1596547 to add columns or grids that overlap the default grids.

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