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1 PrefaceUIPinchGestureRecognizer captures and processes gesture actions similar to zoom in and out. 2. code exampleZYViewController. m [Plain]-(Void) viewDidLoad{[Super viewDidLoad];Self. view. backgroundColor = [UIColor whiteColor];CGRect labelRect = CGRectMake (0.0f,/* X */0.0f,/* Y */200366f,/* Width */200366f);/* Height */Self. myBlackLabel = [[UILabel alloc] initWithFrame: labelRect];Self. myBlackLabel. center = self. view. center;Self. myBlack

Zoom to zoom in:Modify the parameters inside the red box, 2.0 to enlarge twice times, 0.5 to zoom out twice times.Rotating:Modify the parameters inside the red box to indicate how many degrees of rotation. Counterclockwise.This can happen when you write code in a rotation:Because of the rotation, the coordinates of the mapping can not make the coordinates continu

De:oDragHandle.parentElement; } if (odraghandle.classname = "D")Ragable ") {Isdrag = true; odragobj = odraghandle; nty = parseint (oDragObj.style.top + 0); y = nn6? e.clienty:event.cli Enty; NTX = parseint (oDragObj.style.left + 0); x = nn6? E.clientx:event.clientx; Document.onmousemove = Movemouse; The document.onmouseup=mup;//event will return FALSE when the mouse button is loosened; } Document.onmousedown = Initdrag; Document.onmouseup = new Function ("Isdrag=false"); Move the function Clic

Img_zoom (e, O)//Picture mouse wheel Zoom{var zoom = parseint (O.style.zoom, 10) 100;Zoom + = EVENT.WHEELDELTA/12;if (Zoom > 0) o.style.zoom = zoom + '% ';return false;}You can modify the src= "picture address" in the picture address and this.width=300 300 values, other plac

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The original: Put Baidu map in the page you wrote, you can zoom in and zoom out1, first enter the website, http://api.map.baidu.com/lbsapi/creatmap/index.html(If it is wrong, you can take the following methods: Into the Baidu map, the upper right corner has a map API, click into the main page will have a map of the rapid generator, and then you can create their own map)2, in the Web site search for their ow

One: implementation function: Map zoom in, zoom out, roam, globalSecond: Operation effect:Three: The source code is as follows:Using system;using system.collections.generic;using system.componentmodel;using system.data;using System.Drawing; Using System.text;using system.windows.forms;using ESRI. Arcgis.esrisystem;using ESRI. Arcgis.carto;using ESRI. Arcgis.controls;using ESRI. Arcgis.systemui;using ESRI. A

Project needs to do a JS control image of the special effects, wheel control zoom, zoom, mouse drag and other effects, online find methods, various error, incompatible ... Finally, I have developed a set of options as follows:The code is copied directly from the project and is not organized.Code a bit long ╮ (╯_╰) ╭ since it is special effects, it is necessary to duang, have patience to test it! Of course t

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.1 varZoomcontrol;2 3 /*4 * Drop Box zoom out5 */6 functionzoomout () {7 if(zoomcontrol==NULL|| zoomcontrol== ' undefined '){8Zoomcontrol =NewSuperMap.Control.ZoomBox ({out:true});9 Map.addcontrol (Zoomcontrol);Ten } One Else{ Azoomcontrol.out=true; - } - zoomcontrol.activate (); the } - /* - * Pull Frame

Use the keyboard to control the DIV. The Red Square is the keyboard operation area. You can perform the following operations:Upper: lower left: lower right: →Ctrl + 1: the background turns greenCtrl + 2: the background turns yellowCtrl + 3: the background turns blueCtrl + ZOOM: Zoom inCtrl + ZOOM: Zoom out [Ctrl + A s

Example of vue. js + Echarts Development Chart zoom-in and zoom-out function, vue. jsecharts Recently, I used echarts to develop the chart function of a system. I first stated that my previous ext. js and ext. js have their own set of components for the chart, which is also very convenient to use. However, because ext. js is too bloated, the company decided to use echarts to develop chart functions. When we

The scale mentioned here is not the size of the browser, but rather the percentage scaling of the content of the browser's Web page (by pressing the CTRL and + keys or the scale of the-number key).There are ways to detect this scale, and QQ space is used by flash to detect whether the browser is zooming. The JavaScript method is provided here to detect the zoom of the browser.For IE6, it is ignored, because IE6 can only scale the text.First of all, th

Plugin Description: jquery font zoom zoom plugin zoomfontsize.js percent scaling based on parent class, compatibility as follows: How to useThe class property of the body is added changbody_fontsize and the Font property of the entire page is set to percent (except body)Disadvantages:1. Need to scale according to the parent class percentage2.Chrome font scaling minimum is 12px and cannot be scaledPlugin Sou

A line of JS code xue Project needs to click on the image to zoom out, in fact, the main use of the vue:class dynamic switch, the content is relatively simple. At first I thought of the maintenance of the needs too complicated, and test little sister chatted a bit before the reaction came.Two months less than four items, now is the maintenance of the bug phase, has been overtime to add the feeling that the whole person is not a fairy, is the yellow fa

Project, often encounter the page is enlarged or reduced, resulting in page display error, JS can judge the page zoom out.If return 100 is the default no scaling, if greater than 100 is magnified, otherwise shrink function detectzoom () { var ratio = 0, screen = Window.screen, ua = Navigator.userAgent.toLowerCase (); if (window.devicepixelratio!== undefined) { ratio = Window.devicepixelratio; } else if (~ua.indexof (' MSIE ')) {

Zoomerang.js is a very useful HTML DOM element to zoom out JS effect plugin. It can zoom in and out on any element on the page. When an element is in the listening state of Zoomerang, tapping the element can enlarge it to the middle of the screen, and then click it again to return to its original position.Precautions for use:This element zoom-out effect depends o

Vue allows image cropping to zoom in, zoom out, and rotate at the same time. This article describes how to resize, zoom out, and rotate a cropped image by using vue. The details are as follows: Effect: Crop images in a specified area Rotating Images Enlarge image Output bolb format data to formData object General principle: Use the h5 FileReader

Based on the CSS 3 image hover zoom effect, CSS3 hover zoom Today, we are going to share a cool CSS3 image special effect, which allows you to hover and zoom over the image with a mouse over it, and make the image glow around it. With a black background, this CSS3 image is more stereoscopic and suitable for displaying product images. Download Online Preview sour

This article will share with you a frequently used jquery full screen album plug-in zoomvisualizer with the ability to adjust and zoom in and out, if you are interested in the jquery full-screen album plug-in zoomvisualizer, you can use this article to learn about it: Click to view source code download JQuery's full-screen album plug-in zoomVisualizer with adjustable zoom-in and

POP-A click animation with a zoom-in and restoration effect, pop-zoom-in and restoration Animation Principle Listen to click events on the screen -(Void) touchesBegan :( NSSet -(Void) touchesEnded :( NSSet -(Void) touchesCancelled :( nullable NSSet Animation Pop animation, requires a pop Frame Two animations are magnified and restored. KPOPViewScaleXY: Zoom in