如何在指南针中使用IE9、IE8、IE7和Opera制作跨浏览器渐变混合?
我想为所有浏览器制作mixin,包括IE9、IE8、IE7和Opera。
代码
像 http://www.colorzilla.com/gradient-editor/ 生成它生成的
background: #1e5799; /* Old browsers */
/* IE9 SVG, needs conditional override of 'filter' to 'none' */
background: url(data:image/svg+xml;base64,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);
background: -moz-linear-gradient(top, #1e5799 0%, #2989d8 50%, #207cca 51%, #7db9e8 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#1e5799), color-stop(50%,#2989d8), color-stop(51%,#207cca), color-stop(100%,#7db9e8)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /* IE10+ */
background: linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#1e5799', endColorstr='#7db9e8',GradientType=0 ); /* IE6-8 */
对于 IE9,我们需要设置 filter:none
支持 IE9 的完整多级渐变(使用 SVG)。添加一个 “gradient”类到所有具有渐变的元素,并添加 对 HTML 进行以下覆盖以完成 IE9 支持:
Compass 有最新的渐变模块 http: //compass-style.org/reference/compass/css3/images/ 我们可以在调用 $experimental-support-for-svg: true
后使用它,例如像这样
.gradient {@include linear-gradient(#000000, #ff0000)}
使用 给出这样的输出
.gradient {
background-image: url('data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PGxpbmVhckdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgeDE9IjUwJSIgeTE9IjAlIiB4Mj0iNTAlIiB5Mj0iMTAwJSI+PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iIzAwMDAwMCIvPjxzdG9wIG9mZnNldD0iMTAwJSIgc3RvcC1jb2xvcj0iI2ZmMDAwMCIvPjwvbGluZWFyR3JhZGllbnQ+PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8+PC9zdmc+IA==');
background-size: 100%;
background-image: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, #000000), color-stop(100%, #ff0000));
background-image: -webkit-linear-gradient(#000000, #ff0000);
background-image: -moz-linear-gradient(#000000, #ff0000);
background-image: -o-linear-gradient(#000000, #ff0000);
background-image: -ms-linear-gradient(#000000, #ff0000);
background-image: linear-gradient(#000000, #ff0000);
}
如果我们 将指南针图像代码与colorzilla代码进行比较
- < p>缺少 IE6-8 的版本
过滤器:progid:DXImageTransform.Microsoft.gradient( startColorstr='#1e5799', endColorstr='#7db9e8',GradientType=0 ); /* IE6-8 */
- 以及旧版浏览器
background: #1e5799; /* 旧浏览器 */
- 并且它使用
background-image
而不是background
- 并且它有一个额外的属性
background-size: 100%;
- 并且此页面上没有说明 http://compass-style.org/reference/compass/css3/images/ 如何 解决 IE9 所需的
filter:none
问题。
我的问题:
background-size: 100%;
有什么好处?- 使用
background-image
代替background
有什么好处? - 有没有办法将
filter:none
添加到仅适用于 IE9 的元素 罗盘? - 如何在指南针中也获得 IE6-8 兼容代码,如下
过滤器: progid:DXImageTransform.Microsoft.gradient( startColorstr='#1e5799', endColorstr='#7db9e8',GradientType=0 );
?
I want to make mixin for all browser including IE9 IE9, IE8, IE7 and Opera.
Like http://www.colorzilla.com/gradient-editor/ generate the code
it generate
background: #1e5799; /* Old browsers */
/* IE9 SVG, needs conditional override of 'filter' to 'none' */
background: url(data:image/svg+xml;base64,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);
background: -moz-linear-gradient(top, #1e5799 0%, #2989d8 50%, #207cca 51%, #7db9e8 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#1e5799), color-stop(50%,#2989d8), color-stop(51%,#207cca), color-stop(100%,#7db9e8)); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /* IE10+ */
background: linear-gradient(top, #1e5799 0%,#2989d8 50%,#207cca 51%,#7db9e8 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#1e5799', endColorstr='#7db9e8',GradientType=0 ); /* IE6-8 */
And for IE9 We need to set filter:none
Support for full multi-stop gradients with IE9 (using SVG). Add a
"gradient" class to all your elements that have a gradient, and add
the following override to your HTML to complete the IE9 support:<!--[if gte IE 9]> <style type="text/css"> .gradient { filter: none; } </style> <![endif]-->
Compass has latest module for gradient http://compass-style.org/reference/compass/css3/images/ which we can use after calling $experimental-support-for-svg: true
and for example use like this
.gradient {@include linear-gradient(#000000, #ff0000)}
Which gives output like this
.gradient {
background-image: url('data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4gPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGRlZnM+PGxpbmVhckdyYWRpZW50IGlkPSJncmFkIiBncmFkaWVudFVuaXRzPSJ1c2VyU3BhY2VPblVzZSIgeDE9IjUwJSIgeTE9IjAlIiB4Mj0iNTAlIiB5Mj0iMTAwJSI+PHN0b3Agb2Zmc2V0PSIwJSIgc3RvcC1jb2xvcj0iIzAwMDAwMCIvPjxzdG9wIG9mZnNldD0iMTAwJSIgc3RvcC1jb2xvcj0iI2ZmMDAwMCIvPjwvbGluZWFyR3JhZGllbnQ+PC9kZWZzPjxyZWN0IHg9IjAiIHk9IjAiIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InVybCgjZ3JhZCkiIC8+PC9zdmc+IA==');
background-size: 100%;
background-image: -webkit-gradient(linear, 50% 0%, 50% 100%, color-stop(0%, #000000), color-stop(100%, #ff0000));
background-image: -webkit-linear-gradient(#000000, #ff0000);
background-image: -moz-linear-gradient(#000000, #ff0000);
background-image: -o-linear-gradient(#000000, #ff0000);
background-image: -ms-linear-gradient(#000000, #ff0000);
background-image: linear-gradient(#000000, #ff0000);
}
if we compare compass Image code this to colorzilla code
it's missing which is for IE6-8
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#1e5799', endColorstr='#7db9e8',GradientType=0 ); /*
IE6-8 */- and for older browsers
background: #1e5799; /* Old browsers */
- and it's using
background-image
insteadbackground
- and it has one extra property
background-size: 100%;
- and there is no instruction on this page
http://compass-style.org/reference/compass/css3/images/ for how to
solvefilter:none
required for IE9.
My questions:
- What is the benefit of
background-size: 100%;
? - What is the benefit of using
background-image
insteadbackground
? - Is there a way to add
filter:none
to the element only for IE9 in
Compass? - How to get IE6-8 compatible code too in compass like this
filter:
?
progid:DXImageTransform.Microsoft.gradient( startColorstr='#1e5799',
endColorstr='#7db9e8',GradientType=0 );
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SVG 图像是背景图像,该属性的内容是以编程方式生成的图像。为了保持一致,Compass 使用背景图像。此外,指定背景图像可以允许编码器指定不会被 mixin 破坏的背景颜色。
设置背景大小可确保图像实际拉伸以填充元素的空间,而不是图像本身的大小。
这两个选项都有三个选项:
SVG images are background images, and the contents of that property is a programatically generated image. To keep it consistent, Compass uses the background image. Additionally, specifying
background-image
can allow the coder to specify abackground-color
that won't get nuked by the mixin.Setting
background-size
ensures that the image actually stretches to fill the space of the element, instead of being the size of the image itself.There are three options to both of these:
首先在你的 _base.scss 中尝试一下
然后添加
@import filter-gradient($start-color, $end-color, $orientation)
First of all give these a try in your _base.scss
Then add in
@import filter-gradient($start-color, $end-color, $orientation)