how to connect barcode reader to java application Figure 6-26. Images scrolling to the left and disappearing in Font

Drawer PDF 417 in Font Figure 6-26. Images scrolling to the left and disappearing

Figure 6-26. Images scrolling to the left and disappearing
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6-14. Scrolling Images Using Arrays
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Problem
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You have a block of five images and you want it to work so that initially three of the five images appear in the invisible window. Then these images should scroll toward the left border (making the last two hidden images appear in the invisible window). All the images should disappear out of the left border. You want to do this with the help of arrays.
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Solution
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We will be making use of the same HTML file and style sheet file (style.css) that we used in Recipe 6-13. The jQuery code to make each image scroll toward the left border and become invisible one by one is shown here: $(document).ready(function() { var $pic = $('#scroller a img'); var imgs = $pic.length; var next; for (var i=0;i<imgs;i++){ next=$pic.eq(i); scroll(next); }; }); function scroll(im) { im.animate({'left': -770}, 5000); }; Here, we start by retrieving all the images nested inside the anchor elements, which are in turn nested inside the div element of ID scroller, and storing them in the variable $pic. $pic is now an array of five images. We then find out the number of images in $pic array and store the count in the imgs variable. In the for loop we get one image from the $pic array and store it in the variable next. That is, all the images will be assigned to the variable next one by one. To scroll, we invoke the function scroll, and the image stored in the variable next is passed to it (that is, the variable next is assigned to its parameter im). In the scroll() method, the image is set to animate toward the left and stop at a distance of 770px from the left border that is, 770px inside the left border to make even the last (fifth) image disappear. The image while scrolling may appear as in Figure 6-27.
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Figure 6-27. All images scrolling to the left
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Scrolling an Image over Other Images
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Say you want to adapt the solution above, because you want three images to appear stationary and one image (the fourth) to scroll over this block of three images. The jQuery code for that solution is here: $(document).ready(function() { var $pic = $('#scroller a img'); var next; next=$pic.eq(3); scroll(next); }); function scroll(im) { im.animate({'left': -770}, 5000); }; We can see that the variable next is assigned to the fourth image (at index location 3) in the $pic array in the fourth statement, and is passed to the scroll function for scrolling over the images. Initially, we have three images that appear in the invisible window, as shown in Figurer 6-28.
Figure 6-28. Initial images on loading the web page The fourth image will begin from the right border and will scroll toward the left border (of the invisible window) over the three images, as shown in Figure 6-29, where that fourth image is over the second and third images.
CHAPTER 6 VISUAL EFFECTS
Figure 6-29. An image scrolling to the left on top of the other images
Scrolling Only the Image that Is Hovered Over
You have three images that appear initially in the invisible window, and you want functionality so that any image that is hovered over will scroll toward the left border and disappear. The jQuery code may appear as shown here: $(document).ready(function() { var $pic = $('#scroller a img'); $pic.hover( function(){ $(this).animate({'left': -770}, 5000); }, function(){ } ); }); We can see that the third statement attaches the hover event to the block of images (stored in the $pic array) and in its event-handling function we are animating the hovered image toward the left border and making it stop at the distance of 770px from the left border; that is, 770px inside the left border (to make it completely invisible). If we hover over the middle image, it will start scrolling toward the left, as shown in Figure 6-30.
Figure 6-30. An image that is hovered over starts scrolling left. When the middle image is completely scrolled in the left border, we re left with a blank space in the middle of the image block, as shown in Figure 6-31.
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