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Method for dynamically displaying image after gif image is converted to pdf document
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A dynamic display, picture technology, applied in editing/combining graphics or text, animation production, image data processing, etc., can solve the problems of missing pictures, unable to display dynamically, etc., and achieve the effect of strong information transmission ability
Inactive Publication Date: 2014-02-12
FUJIAN FOXIT SOFTWARE DEV LTD
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At present, after converting this dynamic gif picture into a pdf format document, there is only one static picture (usually the first frame) in the pdf file, and the pictures of other frames are lost, and it cannot resemble the original gif The picture shows dynamically
[0003] Therefore, how to solve the problem that only one static image can be displayed after the gif image is converted into a pdf file is the research direction of those skilled in the art
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Embodiment 1
[0029] participate figure 2 , is a flow chart of an embodiment of a method for dynamically displaying pictures after a gif picture is converted to a pdf document in the present invention, and it includes the following steps:
[0030] Step S11: Extract and process each frame in the gif picture, then insert these pictures into the same page of the pdf file, and set the same position coordinates; after such setting, these pictures will be displayed in the same place, this What is displayed at the time is a picture superimposed by these pictures, so it is also necessary to control the display of each picture.
[0031] Step S21: set all pictures to be hidden through the OC dictionary item of the picture object;
[0032] Step S22: When the content is to be rendered, modify the OC dictionary item of each picture through JavaScript script to control whether it is displayed or hidden;
[0033] Step S23: Refresh the current page according to the refresh rate of each frame of the gif ...
Embodiment 2
[0036] participate image 3 , is a flow chart of an embodiment of a method for dynamically displaying pictures after a gif picture is converted to a pdf document in the present invention, and it includes the following steps:
[0037] Step S11': Create a screen annotation in the pdf file, extract each frame in the gif image and insert it into the same page of the pdf file as the content flow of the screen annotation;
[0038] Step S21': When rendering the content of the page, use JavaScript scripts to set the content of the marked AP dictionary item as the image stream to be displayed according to the refresh rate of each frame of the gif image;
[0040] Through the implementation of the above steps, the picture in the pdf file is the same as the original gif picture, and can dynamically display the content of each frame.
[0041] Both of the above two embodiments can dynamically display the image after converting the gif image to...
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Abstract
The invention discloses a method for dynamically displaying an image after the gif image is converted to a pdf document. The method comprises the steps that S1 all frames of the gif image are extracted, and the extracted multiple images are inserted into the pdf document; S2 display of the image of each frame is controlled through JavaScript, and the function that the gif image is dynamically displayed is achieved. By the adoption of the method, the gif image can be dynamically displayed in the pdf document, and all content of the gif image can also be displayed as an animation, the expressive ability of the original gif image is kept, and the information transmission ability of the pdf document is stronger.
Description
technical field [0001] The invention relates to a method for dynamically displaying a plurality of images, in particular to a method for dynamically displaying a plurality of images after converting a gif picture into a pdf document. Background technique [0002] A feature of the gif format is that multiple color images can be stored in a gif file. If the multiple image data stored in a file are read out one by one and displayed on the screen, the simplest animation can be formed. This is a dynamic gif picture. At present, after converting this dynamic gif picture into a pdf format document, there is only one static picture (usually the first frame) in the pdf file, and the pictures of other frames are lost, and it cannot resemble the original gif The picture is shown dynamically. [0003] Therefore, how to solve the problem that only one static image can be displayed after the gif image is converted into the pdf file is the research direction of those skilled in the art. ...
Claims
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