position

How to convert a map location (lat, lng) pair to a screen position (x, y) pair in mapbox

由 可紊 提交于 2019-12-07 12:18:49
问题 I am using mapbox javascript API to do some cool stuff on a map. Now I have a map location (latitude, longitude) pair and I want to set the view to this location then use javascript to simulate a click at this location. The problem is that I need to find out the screen position (x, y) pair of this location after setting the view. But how do I do that? It seems there is an API L.ICRS. I tried but it returned NaN for both x and y -- please check my example javascript codes below. var latlng =

iOS7 position:fixed; works ugly

由 谁都会走 提交于 2019-12-07 11:36:27
问题 I know iScroll and I already used jQuery mobile for a long time and I know both of them fixed this problem but I want to do it myself and not include a large framework for this. My question is how did jQuery Mobile fixed this position:fixed; problem on iOS devies? Currently all my fixed positioned elements will only change the position if the scroll is finished, but it should always appear fixed at the top and not only at the end of the scroll. 回答1: I had the same problem. I had a fixed

Positioning label on CPTBarPlot (Core-Plot)

由 旧街凉风 提交于 2019-12-07 08:21:57
问题 I am trying to change default position of labels in Bar chart with Core-Plot. I am using this method: -(CPTLayer *)dataLabelForPlot:(CPTPlot *)plot recordIndex:(NSUInteger)idx; And I return: return textLayer = [[CPTTextLayer alloc] initWithText:@"2222" style:textStyle]; I get this result: But I want to appear as follows: Any idea? I tried to find answer on documentation, but I has been impossible. 回答1: Use a negative labelOffset for the bar plot. The default is +10 which puts the labels 10

How does css position impact element width/height?

由 删除回忆录丶 提交于 2019-12-07 07:13:15
问题 How do the various options for css position (static, relative, absolute, fixed) impact the way percentage width/height is calculated? This question may be too generic to provide a concrete answer, and it's possible that the answer is "the two are not directly related", but I'm having trouble understanding the impacts of css position on element size. Links to related questions/answers are welcome. 回答1: I recommend that you read A List Apart's CSS Positioning article. It's the best article I've

Starting a background image below navbar in Twitter Bootstrap

由 痞子三分冷 提交于 2019-12-07 05:08:07
问题 Relative CSS/bootstrap newbie. I've spent a while trying to get a background image to integrate with Twitter Bootstrap using the first method on this CSS Tricks page. I wound up using "body" as the CSS tag because HTML just... didn't work. While everything is working fine in general, the image is starting "behind" the top navbar and then extending downward, so the top is hidden behind the black navbar I've tried using margin-top to align the top of the background image with the bottom of the

Is this possible to achieve absolute position functionality without using position attribute through css?

由 半腔热情 提交于 2019-12-07 04:04:12
问题 I am creating outlook email. I have created an email system. I have check in all email giants like Gmail, yahoo etc it work perfectly but suddenly when I saw same email in outlook it was shocking that outlook not supports position attribute. Now, what I want is to achieve same functionality, I have searched on Google but not found a good source to solve issue except this platform to ask question. Please help! Thanks in advance. Note: I don’t want to do this by placing one div inside other.

efficient storage of a chess position

由 半城伤御伤魂 提交于 2019-12-07 02:57:50
问题 I've read tons of web hits related to this issue, and I still haven't come across any definitive answer. What I'd like to do is to make a database of chess positions, capable of identifying transpositions (generally which pieces are on which squares). EDIT: it should also be capable to identify similar (but not exactly identical) positions. This is a discussion almost 20 years ago (when space was an issue): https://groups.google.com/forum/#!topic/rec.games.chess.computer/wVyS3tftZAA One of

Why does the negative z-index removes the hovering capabilities of non-statically positioned element?

由 佐手、 提交于 2019-12-07 02:30:23
问题 I just noticed that setting z-index:-1 to non-statically positioned elements removes their hovering capabilities. Surprisingly the hovering capabilities of absolutely and fixed positioned elements varie with conditions, Absolutely/Fixed positioned elements loose the hovering capability partially only if there is some text written after them. Hovering over near the top border doesn't work. If there is nothing after them then hovering works properly. Relatively positioned elements loose the

JQuery特殊属性操作、事件机制 （3）

由 会有一股神秘感。 提交于 2019-12-07 01:53:23
1. jQuery特殊属性操作 1.1. val方法 val方法用于设置和获取表单元素的值，例如input、textarea的值 //设置值 $("#name").val(“张三”); //获取值 $("#name").val(); 1.2. html方法与text方法 html方法相当于innerHTML text方法相当于innerText //设置内容 $(“div”).html(“<span>这是一段内容</span>”); //获取内容 $(“div”).html() //设置内容 $(“div”).text(“<span>这是一段内容</span>”); //获取内容 $(“div”).text() 区别：html方法会识别html标签，text方法会那内容直接当成字符串，并不会识别html标签。 1.3. width方法与height方法 设置或者获取高度 //带参数表示设置高度 $(“img”).height(200); //不带参数获取高度 $(“img”).height(); 获取网页的可视区宽高 //获取可视区宽度 $(window).width(); //获取可视区高度 $(window).height(); 1.4. scrollTop与scrollLeft 设置或者获取垂直滚动条的位置 //获取页面被卷曲的高度 $(window).scrollTop()

Overlay div on top of parent with same size

由 落爺英雄遲暮 提交于 2019-12-07 00:31:42
问题 I need to overlay a child div to cover it's parent div when my drag and drop event starts, but I can't get the child div to be on top of the parent using z-index. Here is my HTML: <div class="some-element"> <div class="parent-div"> <div class="child-div"> <p>This should be over the parent</p> </div> <h1>Some text lorem ipsum</h1> </div> <div class="another-div"> <p>lorem ipsum</p> </div> </div> And here is my CSS html, body { height: 100%; width: 100%; } .some-element { background-color: blue
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