|
HTML - Draw Only A Portion Of Image With Img?
Is it possible to draw only a certain portion of an image using img? I want to take this radar and only have it draw a rectangle around where I live instead of the whole image. Is there a way to specify what coordinates to draw using img?
Similar TutorialsHi guys, I'm having difficulty drawing lines on top of an uploaded "map.gif" image. Basically I've upload a small outline map and use the <area> function to create defined areas (cities, roads, etc). When I click on a city a snall pop up gets displayed with the word "hey, you've just click on Dallas" (or where ever). All that works just fine. My problem is that my map is actually just a blank outline with no actual cities or roads drawn on it. Therefore I tried using the <canvas> function to draw the cities (circles) and roads (lines). The only problem is that they appear below the map rather than on top of it. Any ideas as to how I can get the lines to appear on the map? Many thanks, Pete Okay a simplified version of my problem is this: I have a small table of 2x2, with the right two cells merged. I have content in the right cell in the form of text. The cell has the following formatting: overflow: hidden; and the text has the following formatting: position: relative; left: -91px; vertical-align: top; text-align: justify; The left cells are 182px wide, so the text looks like it is centered with respect to the entire table, with the overflow into the left two cells being cut off. The problem now is, I only want the text covered by the top left cell to be cut, and I want the text in the bottom left cell to still be visible. I tried using the 'clip:' property, but you cannot specify a non-rectangular area so it's of no help to me. There is an image in the top left cell, and nothing in the bottom left cell, so the other way to fix my problem would be to find some way of having the overflow appear BEHIND the other elements, so that the image would cover the text, and the empty cell would not. Hi all. I need to draw this table in html http://www.htmlforums.com/style1/ima...or/menupop.gif Please help Hello! Just a quick question really... Have you ever visited a website, clicked a link within the site, and noticed after doing so that only a portion of the page has changed? The diagram attached will hopefully help explain I am trying to achieve. i basically want a page consisting of two columns. The left column (nav) will be my navigation panel and contain links that when clicked by the user, the content beside it in the 'right' column (content) changes. Please can anyone suggest how i can achieve this? I have experimented with frames and floating frames (iframes) and it does work, yet I understand that frames are not supported by all browsers? this worries me! Can this be achieved through css? Are there any of you that know of any tutorials that can help me? Please, any help will be much appreciated! It seems, at least on my computer, that when I choose the blog page on my "site in progress"... that the page sort of zooms in. I thought at first it was because the page used a scrollbar and the other page didn't, but then I created another page with a scrollbar, separate from the blog, and it did NOT do the zoom effect. You can see the site in question he http://www.pzfantasyfootball.com As you can see, most noticeably in the navigation, the font looks fine, not blurry, not too big, just right. When you click on the blog page, the font becomes blurred and slightly bigger. I'm running the latest Firefox on a 1440x900 monitor. Any advice would be greatly appreciated. Thanks Hi all, In my report i show the amount value. Below the amount value, i want to draw 2 horizontal lines close to each other in HTML. I used 2 hr tags and it printed 2 horizontal lines but the width between them is large. I want the 2 horizontal lines to be very close to each other. e.g Amount: 100 -------- -------- The above 2 lines should be closer to each other and not like the above. Let me know if anyone knows how this can be done. dear everybody i need to draw a table with data inside the TEXTAREA but i don't understand how can i do it. Can anybody help me how can i do it . Thanks Web Developer Nanumsem Korea Is there a way to change the way IE handles transparent portions of an element - like a 200x200 pixel div with borders but no background? Firefox will consider "onmouseover" for the entire div, but IE seems only to react to the thin border. So, I can make a simple drag-and-drop div in Firefox, but in IE you have to pick the 1 pixel border to drag it around :-( Putting a transparent image in the div does not help, since this will make the browser itself grab that image, ignoring my script. How can you make the div become selectable in IE too? All the best Robert Hi all -- I'm having an interesting problem. I'm designing a web page that has a navigation banner (home - programs - schedule of events - contact us - downloads) that is made up of a .png for each page (i.e. home.png, programs.png, etc). My page is 1000px wide and all of the navigation banner's images add up to 1000px wide. I'm using JavaScript to create an onMouseOver and onMouseOut effect on each of the images. The problem that I'm having occurs when I tried to add a link (either by <A HREF= or using an image map). Whenever I add a link to the image, a small (3px) area of white space shows up to the right of the image. This shifts all of my other images 3px to the right (and 3 more for each link I add to subsequent images) thus making the total width of the navigation banner over 1000px and the last image gets shoved to a new line. I can find no way to get rid of this white space other than to remove the link from the image. There is no property on the page that adds any sort of padding, margins, or borders to images or links, so I can see no property that has to be changed. Help! How do I get rid of this white space but still keep the link on the image?? [I posted this question on the Adobe forum to no avail, below is a screencap I took of the issue I'm having] Thanks in advance! //kl PS - I am using both IE8 and Chrome to view this webpage. I've set all the margins/padding/borders to 0px. Here is my CSS and the part of the code that pertains to the navigation banner. CSS: Code: <style type="text/css">
<!--
body {
font: 100% Verdana, Arial, Helvetica, sans-serif;
background: #666666;
margin: 0; /* it's good practice to zero the margin and padding of the body element to account for differing browser defaults */
padding: 0;
text-align: center; /* this centers the container in IE 5* browsers. The text is then set to the left aligned default in the #container selector */
color: #000000;
background-image: url(images/blue.bg.png);
background-repeat: repeat;
background-color: #009;
}
.oneColFixCtr #container {
width: 1000px; /* using 20px less than a full 800px width allows for browser chrome and avoids a horizontal scroll bar */
background: #FFFFFF;
margin: 0 auto; /* the auto margins (in conjunction with a width) center the page */
border: 0px solid #000000;
text-align: left; /* this overrides the text-align: center on the body element. */
}
.oneColFixCtr #mainContent {
padding: 0 20px; /* remember that padding is the space inside the div box and margin is the space outside the div box */
}
body, td, th {
color: #333;
}
#main_banner2 {
margin: 0px;
padding: 0px;
height: auto;
width: 1000px;
}
-->
</style>
</head>
Nav Banner: NOTE:: below HAS to be all one paragraph because if i insert a carriage return in between images, it also adds the white space... Code: <body class="oneColFixCtr"> <!-- MAIN NAVIGATION BANNER --> <!--HOME--><img src="images/nav/home.png" alt="home" name="home" width="82" height="30" border="0" onMouseOver="document.images.home.src='images/nav/home_over.png'" onMouseOut ="document.images.home.src='images/nav/home.png'"/><!--PROGRAMS--><img src="images/nav/programs.png" width="111" height="30" border="0" name="programs" onMouseOver="document.images.programs.src='images/nav/programs_over.png'" onMouseOut ="document.images.programs.src='images/nav/programs.png'"/><!--SCHEDULE OF EVENTS--><img src="images/nav/scheduleofevents.png" width="189" height="30" border="0" name="scheduleofevents" onMouseOver="document.images.scheduleofevents.src='images/nav/scheduleofevents_ over.png'" onMouseOut ="document.images.scheduleofevents.src='images/nav/scheduleofevents.png'"/><!-- CONTACT US--><img src="images/nav/contactus.png" width="119" height="30" border="0" name="contactus" onMouseOver="document.images.contactus.src='images/nav/contactus_over.png'" onMouseOut ="document.images.contactus.src='images/nav/contactus.png'"/><!--DOWNLOADS--><i mg src="images/nav/downloads.png" width="267" height="30" border="0" name="downloads" onMouseOver="document.images.downloads.src='images/nav/downloads_over.png'" onMouseOut ="document.images.downloads.src='images/nav/downloads.png'"/><!--FACEBOOK--><im g src="images/nav/facebook.png" width="90" height="30" border="0" name="facebook" onMouseOver="document.images.facebook.src='images/nav/facebook_over.png'" onMouseOut ="document.images.facebook.src='images/nav/facebook.png'"/><!--TWITTER--><img src="images/nav/twitter.png" width="67" height="30" border="0" name="twitter" onMouseOver="document.images.twitter.src='images/nav/twitter_over.png'" onMouseOut ="document.images.twitter.src='images/nav/twitter.png'"/><!--BLOGGER--><img src="images/nav/blogger.png" width="75" height="30" border="0" name="blogger" onMouseOver="document.images.blogger.src='images/nav/blogger_over.png'" onMouseOut ="document.images.blogger.src='images/nav/blogger.png'"/><img src="images/home_banner.png" alt="home_border" width="1000" height="7" /><br /> So in January 2006 I posted a question about "making two buttons in one" 3 years and 5 months later i am happy to announce that I have found a solution. Ok, so no I have not spent the last three years looking, but the need for one came around again yesterday so I revisited the project. All I needed was "simple" image toggle. Image 'A' click it once it changes to image 'B' click it again it changes back to image 'A' All the "image toggle" codes I could find were extremely complex. I thought I had finally found one, it wasn't perfect, but it was the smallest and most basic thing I could find. HTML Code: <html>
<head>
<style type="text/css">
.on {background-image:url(playlist_btn.png); background-repeat:no-repeat;}
.off {background-image:url(playlist_btn_x.png); background-repeat:no-repeat;}
</style>
<script language="javascript">
function togglestyle(el){if(el.className == "on") {el.className="off";} else {el.className="on";}}
</script>
</head>
<body>
<div id="onoff" class="playlist_btn"><img src="blank.gif" width="50 height="50" onclick="togglestyle(onoff)"></div>
</body>
</html>
I tested it, it worked, so I considered problem solved. I placed it in my page and nothing. Turns out it wont work with a doc type - so it's useless. Other problems, I'm not big on using "blank gif's" unless I have to, if you want multiple image toggles you need a new JS function for each one, and two lines of css as well. And, though I rarely use image rollovers anymore, it would certainly not be possible in this method. So it was back to the drawing board. Well, I had actually already found the solution a few minuets prior to finding out that the above code is so good. I had coded a button that on rollover shows a tooltip, when you click the button, the text in the tool tip, changes, chick again and it reverts. All done with a simple showHide javascript function, that i am finfing out has many uses. here is the awesome code: Code:
function showHide(elementid){
if (document.getElementById(elementid).style.display == 'none'){
document.getElementById(elementid).style.display = '';
} else {
document.getElementById(elementid).style.display = 'none';
}
}
function hideShow(elementid){
if (document.getElementById(elementid).style.display == ''){
document.getElementById(elementid).style.display = 'none';
} else {
document.getElementById(elementid).style.display = '';
}
}
I wont take credit for the showHide code, but I will take credit for the hideShow portion, obviously a monkey could have coded the revers, but iot does make it that much more universal. As the original code was designed to show something that was hidden, add the revers to hide something that is showing and it's perfect. Now I will take a moment to say, though I have yet to find a problem with the code, it seems to work in most browsers, firefox, ie, safari, and validates for WC3 - In sure it has it's flaws. Until now, to show and hide divs I had used the MM_showHideLayers JavaScript function, which by default used the visibility style. It is of course a good script, and has many uses, it's not very big, but it is somewhat complex. The other thing to think about is that invisible objects still take up space. That's what is cool about the display:none: style, is that is not only invisible but it doesn't take up space. So here is how I used the above to JavaScript to make a simple onclick image toggle: HTML Code: <img id="on" src="on.png" width="50" height="50" onClick="javascript:hideShow('on'); javascript:showHide('off')" alt="on">
<img id="off" src="off.png" width="50" height="50" onClick="javascript:hideShow('off'); javascript:showHide('plus')" style="display:none;" alt="off">
Cool huh? Now this example does not have a rollover either, but since it uses to individual images and is not replacing one image wioth another you could easily apply a rollover to both images. But, hold on, look at the above code, isn't that essentially a rollover? Change the first onClick to onMouseOver and the second to onMouseOut and look at that a 'brand new' method for mouseovers. So lets take a look at this for a second, and compare MM_swapImage to this new hideShow method. As far as CSS rollovers I definitely prefer them to the MM_swapImage method, as they use a minimal amount of code. However they actually take a lot of math, construction the buttons is somewhat tedious, because css buttons use 1 image and change it's position, to work well you have to use a "blank.gif" and the the css can really add up if you have a lot of buttons: Also, you can't go directly to a button in the document, you have to fish through the css to make any adjustments. But they are fast, they don't need to be preloaded and... they are pretty cool. But anyway, swapImage and hideShow... The left is the MM_swapImage method. Now when you use the swapImage js you also have to use MM_swapImgRestore, MM_findObj, MM_preloadImages. You don't have to use the preload script but it does make thing work faster... supposedly, but that requires a onload script in the body tag, and if you have a lot of rollovers your body tag can get really long really quick. So what are the advantages, well we know for sure it works, and you only need on image in the document, however actualy having the image you are "swapping" too actually in the document can add functionality. So as you can see, on the right, the showHide method is, in total code, much smaller. True you do need to use two images, so the total code in the body is longer but, it's more than evened out bu the minimal JavaScript, and I think it's worth it. You don't need to use a preloader, you have full control over both images, the up and over state, and unlike the swapImage method, though it's rare you would need to, your up and over images can actually be different sizes, which is kind of cool. So here's the basic code for a rollover: HTML Code: <img id="up" src="up.png" width="50" height="50" onMouseOver="javascript:hideShow('up'); javascript:showHide('over')" alt="up">
<a href="http://google.com"><img id="over" src="over.png" width="50" height="50" onMouseOut="javascript:hideShow('over'); javascript:showHide('up')" style="display:none;" alt="over" border="0"></a>
To add a link the button you just apply it to the "over state" image. And unlike swapImage, though it is overkill, you can also add a "downstate" image quite easily. So, back to the on/off button here is how you would code it using showHide with rollovers. HTML Code: <img id="on" src="on.png" width="50" height="50" onMouseOver="javascript:hideShow('on'); javascript:showHide('onover')" alt="on">
<img id="onover" src="on_over.png" width="50" height="50" onMouseOut="javascript:hideShow('onover'); javascript:showHide('on')" onClick="javascript:hideShow('onover'); javascript:showHide('offover')" style="display:none;" alt="onover">
<img id="off" src="off.png" width="50" height="50" onMouseOver="javascript:hideShow('off'); javascript:showHide('offover')" style="display:none;" alt="off">
<img id="offover" src="off_over.png" width="50" height="50" style="display:none;" onMouseout="javascript:hideShow('offover'); javascript:showHide('off')" onClick="javascript:hideShow('onover'); javascript:showHide('off')"alt="offover">
So here is what is going on: you have the upstate on.png image, when you mouse over it on.png is hidden and on_over.png is displayed. When you click on_over.png it is hidden and off_over.png is display, mouse off it and off.png is displayed. Make scene? Now be aware, when you click, you are also in a scene "mousing off" so some flickering can occur. Firefox handles everything pretty well, IE and Safari not so much. When you click the on_over.png the click tells it to hide on_over.png and show the off_over.png, at the same time the mouseoff tells it to hide on_over.png and show the on.png. So fortunately the toggle with rollovers isn't perfect, but perhaps some more tweaking of the code or maybe, in this case swapImage would work better to do the rollovers... But all in all I'd say its a solid concept. If you feel compiled to do so, reply with any comments, concerns or flaws you see. Hey guys. I need a little help with my HTML image rotator. Everything works fine, except the images don't show up on the right slide. All 4 images show up on the first slide. I can't figure out what's wrong. Any help will be greatly appreciated. Code: <!DOCTYPE html>
<html>
<head>
<title>...</title>
<style>
#sliderwrap {
height: 403px;
}
#sliderleft {
width: 10px;
height: 100%;
float: left;
background: #efefef;
border: 1px solid #ccc;
}
#sliderleft div {
height: 100px;
border-bottom: 1px solid black;
}
#slidercontent {
position: relative;
width: 650px;
height: 100%;
float: left;
border: 1px solid black;
overflow: hidden;
}
#sliderimages {
position: absolute;
-webkit-transition: all .5s ease-in-out;
-moz-transition: all .5s ease-in-out;
-ms-transition: all .5s ease-in-out;
-o-transition: all .5s ease-in-out;
transition: all .5s ease-in-out;
}
#sliderimages img {
display: block;
}
.s0 #slide0,
.s1 #slide1,
.s2 #slide2,
.s3 #slide3 {
background: #ccc;
}
.s0 #sliderimages {top: 0 }
.s1 #sliderimages {top: -500px}
.s2 #sliderimages {top: -1000px}
.s3 #sliderimages {top: -1500px}
</style>
<script>
var slide = 0;
var interval_id = 0;
function stop_timer() {
clearInterval(interval_id);
if (this.getAttribute("data-slide")) {
slide = parseInt(this.getAttribute("data-slide"));
document.getElementById("sliderwrap").className = "s" + slide;
}
}
function start_timer() {
clearInterval(interval_id);
interval_id = setInterval(
function() {
slide = (slide + 1) % 4;
document.getElementById("sliderwrap").className = "s" + slide;
},
3000
);
}
window.onload = function() {
start_timer();
var el = document.getElementById("slidercontent");
var divs = document.getElementById("sliderleft").getElementsByTagName("div");
for (var i = 0; i < divs.length; i++) {
divs[i].onmouseover = stop_timer;
divs[i].onmouseout = start_timer;
}
el.onmouseover = stop_timer;
el.onmouseout = start_timer;
}
</script>
</head>
<body>
<div id="sliderwrap" class="s0">
<div id="sliderleft">
<div id="slide0" data-slide="0"></div>
<div id="slide1" data-slide="1"></div>
<div id="slide2" data-slide="2"></div>
<div id="slide3" data-slide="3"></div>
</div>
<div id="slidercontent">
<div id="sliderimages">
<img src="http://i.imgur.com/8iWz6.jpg">
<img src="http://i.imgur.com/1d2U6.jpg">
<img src="http://i.imgur.com/8iWz6.jpg">
<img src="http://i.imgur.com/1d2U6.jpg">
</div>
</div>
<div style="clear: both;"></div>
</div>
</body>
</html>
the title makes it sounds really confusing. Ok im making my first website, and i need help with a code, (as you can see on www.dalekblaster.co.uk) i have got a section at the top where the images change from one to another. The code is - HTML Code: // Set slideShowSpeed (milliseconds)
var slideShowSpeed = 5000;
// Duration of crossfade (seconds)
var crossFadeDuration = 5;
// Specify the image files
var Pic = new Array();
// to add more images, just continue
// the pattern, adding to the array below
Pic[0] = 'http://www.dalekblaster.co.uk/images/banner/dalekblasternexttime.jpg'
Pic[1] = 'http://www.dalekblaster.co.uk/images/banner/dalekblaster2.jpg'
Pic[2] = 'http://www.dalekblaster.co.uk/images/banner/dalekblastersjanexttime.jpg'
Pic[3] = 'http://www.dalekblaster.co.uk/images/banner/dalekblaster.jpg'
// do not edit anything below this line
var t;
var j = 0;
var p = Pic.length;
var preLoad = new Array();
for (i = 0; i < p; i++) {
preLoad[i] = new Image();
preLoad[i].src = Pic[i];
}
function runSlideShow() {
if (document.all) {
document.images.SlideShow.style.filter="blendTrans(duration=2)";
document.images.SlideShow.style.filter="blendTrans(duration=crossFadeDuration)";
document.images.SlideShow.filters.blendTrans.Apply();
}
document.images.SlideShow.src = preLoad[j].src;
if (document.all) {
document.images.SlideShow.filters.blendTrans.Play();
}
j = j + 1;
if (j > (p - 1)) j = 0;
t = setTimeout('runSlideShow()', slideShowSpeed);
Now i need help because, i want to link each picture on the slideshow to a differnet page or external site, but im not sure how. (but so they can go to different pages not the same one) can anyone help me? I'm not sure if this is an IE issue, css, html... I have all icons and images showing a broken image" red X OVER the actual image? I've never seen this on any other sites or even on any other sites i've done. They are all .png images but I use .png files successfully all the time? Anyone encounter this? Here's the HTML surrounding the image file: HTML Code: <div class="header logo2"> <!-- Logo begins here --> <a href="index.php" title=""><img src="images/logo.png" alt="" /></a> </div> <!-- END Logo --> Here's the CSS surrounding the image with no other images or backgrounds being called??? HTML Code: .header {
height: 41px;
}
.logo2 { text-align: right; }
See Image Attached... Hi I am wondering if there is a way to create a composite image of different images in a website folder? So if I have a folder with image01.png, image02.png, image03.png, is there a way (on a website) to take those three images and create on composite image out of them, and then maybe place this new image in another folder? I don't want to use Flash. Thanks for your time and help. Shaun Hi I am wondering if there is a way to create a composite image of different images in a website folder? So if I have a folder with image01.png, image02.png, image03.png, is there a way (on a website) to take those three images and create on composite image out of them, and then maybe place this new image in another folder? I don't want to use Flash. Thanks for your time and help. Shaun Hi guys, new to the forum and it looks like a helpful place. I've searched for my answer but can't find the solution hence why I'm posting here. What I want to do I imagine shouldn't be too difficult but I'm very new to this and trying to teach myself as I go. What I have is an image with various hotspots on it pointing to different pages. Now My hot spots work fine which amazed me but i what i need to be able to do is when i rollover a hot spot a pop up type window comes up showing a small amout of information about the page its linked to and a small image of same web page. I would appreciate any help but please bear in mind I am really new to all this so instructions wil have to be really basic or you'll just lose me. Oh and I'm using dreamweaver if that helps. If this is possible in one of the other adabe programmes where I could save all the information on the image or whatever then I'm willign to try anything. Cheers guys. Can we place an image just right to an image having the style float:left? If so how? I tried keeping but the second image was coming below the first image. <td colspan="4"> <img src="images/Subject.gif" style="float: left" /> <b>Subject - Craig TestFile</b> <img src="images/dot.jpg" class="imageUnderLine" /> </td> Also the is there any way to remove the spaces that come in between when we use <hr> tag? For example if we write test<hr> the seperator drawn is after a line break with text. Im trying to create a simple thing for my business. What im trying to do is have the image of each of my employees and under it have their name and other info. I want the images side by side with some space and able to put their info under it. Can someone help me with a html code? thanks! Can you make an Image be transparent, like in photoshop? (see image attached) I want to make the white space in my top banner transparent so that you can see the background image below it. Hi, I'm a complete newb and html-challenged, so please forgive my stupid questions. This is what I want for the personal website I'm making: a fixed image as the background that covers the entire screen regardless of what screen resolution a user's computer has - this much I've managed with CSS...I think (like this right? http://www.geocities.com/serenamonster/index.htm ) clickable regions on this background image to use for navigation to various parts of the site. Or in other words, the background image as an image map. - this I'm having trouble with, because you have to designate the picture as a set # of pixels in dimension to make an image map right? and if I do that to my background image, then it may display too big or too small depending on the person's screen resolution right? So does anyone know how I can have clickable regions on my fixed background image without the image being too big for low resolutions or too small for high resolutions? (he http://www.geocities.com/serenamonster/map.html the background image is fixed at 800x400. I want to make each star on the image a hyperlink to a different part of the site). I read somewhere that standard is 800x600 to fill a person's browser right? But on my computer the image only covers about 2/3 of the browser screen which is too small. How can I make it so that it fills 100% of any viewer's screen regardless of resolution? How does it look on your computer? I know these are probably just really stupid questions because I'm missing something really fundamental...but any help would be greatly appreciated! Thanks! ~Serena P.S. is it possible to do mouseovers for certain coordinates on an image map? |
|||||||