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Can I see changes before I save my file in Vim?

由 孤者浪人 提交于 2019-12-17 21:39:19
问题 I use Vim. I open a file. I edit it and I want to see what I've edited before I save it. How can I do this in Vim? 回答1: http://vim.wikia.com/wiki/Diff_current_buffer_and_the_original_file Here is a function and command to see a diff between the currently edited file and its unmodified version in the filesystem. Just put this in your vimrc or in the plugin directory, open a file, make some modifications without saving them, and do :DiffSaved . function! s:DiffWithSaved() let filetype=&ft

Can I see changes before I save my file in Vim?

由 冷暖自知 提交于 2019-12-17 21:28:12
问题 I use Vim. I open a file. I edit it and I want to see what I've edited before I save it. How can I do this in Vim? 回答1: http://vim.wikia.com/wiki/Diff_current_buffer_and_the_original_file Here is a function and command to see a diff between the currently edited file and its unmodified version in the filesystem. Just put this in your vimrc or in the plugin directory, open a file, make some modifications without saving them, and do :DiffSaved . function! s:DiffWithSaved() let filetype=&ft

【Android Camera】之 Preview

由 与世无争的帅哥 提交于 2019-12-17 17:28:53
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> Android C amera小系统 ： 嗯……直接看Camera HAL层，它实现是主要的工作, 它一般通过ioctl调用 V4L2 command ① 从linux kernel中的 camera driver① 得到preview数据. 然后交给surface(或overlay)显示或者保存为文件.在HAL层需要打开对应的设备文件,并通过ioctrl访问camera driver. Android通过这个HAL层来保证底层硬件(驱动)改变,只需修改对应的HAL层代码,FrameWork层与JAVA Ap的都不用改变. 注释：① V4L2(video 4 linux 2) 备注：①这个驱动并不是camera本身而是控制camera的主设备，这个camera控制器在linux里被抽象成为v4l2层通用，最后由(*attach)连接到具体每个不同的camera设备驱动里。camera=camera控制器+外接的camera sensor，控制器集成在cpu里,linux下的设备结点就是/dev/video0. preview 数据的显示过程: 简 单 概 括 为 Java app 呼叫 ② Jni ， Jni 调用各种 .so ： libandroid_runtime.so ---> libcamera

android studio designer preview: how to include device frame?

由 心已入冬 提交于 2019-12-17 16:32:52
问题 There seems to be tons of answers to the opposite question "how to remove device frame" which instructs user to click the "settings" button inside preview to uncheck "include device frame (if available)". But for me using 2.2.2 on a mac and 2.2.1 earlier, such a button with that option never was available. Out of the box (dmg) Android Studio Designer always only shows the viewport without any device frame. This explanation of the Designer settings suggests that option is only available if

How to get raw preview data from Camera object at least 15 frames per second in Android?

由 孤人 提交于 2019-12-17 08:09:32
问题 I need to obtain raw preview data from Camera object at least 15 frame per second , but I can only get a frame in 110 milliseconds which means I can get only 9 frames per second. I brief my code below. Camera mCamera = Camera.open(); Camera.Parameters parameters = mCamera.getParameters(); parameters.setPreviewFrameRate(30); parameters.setPreviewFpsRange(15000,30000); mCamera.setParameters(parameters); mCamera.addCallbackBuffer(new byte[dataBufferSize]); //dataBufferSize stands for the byte

Converting preview frame to bitmap

由 时光毁灭记忆、已成空白 提交于 2019-12-17 06:46:08
问题 I know the subject was on the board many times, but i can not get it work anyhow... I want to save view frames from preview to jpeg files. It looks more or less(code is simplified- without additional logic, exception etc) like this... public void onPreviewFrame(byte[] data, Camera camera) { int width = camera.getParameters().getPreviewSize().width; int height = camera.getParameters().getPreviewSize().height; final int[] rgb = decodeYUV420SP(data, width, height); Bitmap bmp = Bitmap

Android - Camera preview is sideways

由 人走茶凉 提交于 2019-12-16 20:41:42
问题 I am using a Preview to display what the camera see's on the screen. I can get everything working fine, surface created, surface set and the surface is displayed. However it always displays the picture at an incorrect 90 degree angle in portrait mode. Such as in the picture: I am aware that using the following code will set the picture straight: setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); However I have the Preview within an Activity that has other elements in it and

How to show image preview while downloading it on Android?

由 ☆樱花仙子☆ 提交于 2019-12-14 04:21:47
问题 i want to write an app that displays images from a Cherokee webserver. I do download the images with the following code: @Override protected Bitmap doInBackground(URL... params) { URL urlToDownload = params[0]; String downloadFileName = urlToDownload.getFile(); downloadFile = new File(applicationContext.getCacheDir(), downloadFileName); new File(downloadFile.getParent()).mkdirs(); // create all necessary folders // download the file if it is not already cached if (!downloadFile.exists()) {

Aptana Studio 3 preview problems with absolute path

由 我们两清 提交于 2019-12-14 01:24:20
问题 I have this structure for my project: Root Directory |-css folder |-style.css | |-it folder |-index.html If I try to include css file with: <link href="/css/style.css" rel="stylesheet" type="text/css"/> from index.html, aptana preview and also internal server can not find style.css. Why is this? In my remote server it works perfectly and I do not want to use a relative path. 回答1: In terms of the "why", the problem you are having is related to how your development server is setup versus your

Clarification required on Javascript in HTML5 fileAPI for image preview

由 让人想犯罪 __ 提交于 2019-12-13 20:53:23
问题 I was looking at the new HTML5 file API for showing a preview of an image to be uploaded. I googled for some code and almost every example had the same structure, almost the same code. I don't mind copying, particularly when it works, but I need to understand it. So I tried to understand the code but I am stuck with one area and need someone to explain that small part: The code refers to a HTML form input field and when the file is selected shows the preview image in a img tag. Nothing fancy.
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