preview

I want to show image preview before uploading process. In my case I selected multiple images with input file and the list of file name will show as link. When I click on the image file name link then the preview image popup will show of it's specific image. Here is my code.. <input id="uploadBtn" type="file" class="upload" multiple="multiple" name="browsefile" style="display: none !important;"/> <input type="button" value="ファイル追加" onclick="document.getElementById('uploadBtn').click();" style="float: right;"/> <input id="filename" type="hidden" /> <br> <div id="upload_prev"></div> <div style=

I want to display a preview in fullscreen using camera2 api. The camera size I selected is 4160x3120 (16:9) and my screen is 1080x1920 (9:16). Therefore if I want the preview to be right scaled I have to crop the camera output : Rect zoomCrop = new Rect(0, 0, 1755, 3120); captureRequestBuilder.set(CaptureRequest.SCALER_CROP_REGION, zoomCrop); The cropped preview should be of size 1755x3120 which has a ratio of 9:16 as well. Still the preview is streched. Question : Am I using SCALER_CROP_REGION correctly ? If not, how am I supposed to use it ? Thanks in advance I've been struggling with the

The preview of my website's pages is displaying in FaceBook and LinkedIn but no preview appears when I paste the link in WhatsApp. 来源： https://stackoverflow.com/questions/49647727/theres-no-preview-for-links-to-my-website-in-whatsapp

I want to show filtered camera preview in my application. I'm using Camera.setPreviewCallback() for this. I managed to process callback data and show filtered image in OpenGL view but I have no idea how to hide original camera preview and still receive preview callbacks. Making surface view "gone" or "invisible" doesn't work, making it small enough (10x10) to hide behind GUI doesn't work either. It just stops sending callbacks with preview data. Can you share some workaround on this? I'm testing using Galaxy S2. Thank you in advance. A solution is to even though set the Preview Size to be as

I want to create a "preview window" for my "main window", so if I take mouse pointer to a particular button or place then it show main window preview in a small window, and when I click on that "preview window" then it should return to the "main window". For example Windows 7 task bar creates a preview for each opened application. How can I can offer this feature to my users? E.G. An extremely simplistic implementation. import java.awt.*; import java.awt.image.*; import java.awt.event.*; import javax.swing.*; class ShowPreviews { class ToolTipListener extends MouseAdapter { JWindow toolTip;