Method for displaying handwriting in PDF file
A handwriting and document technology, applied in the field of displaying handwriting and handwriting in PDF files, can solve the problems of affecting applications, single color, poor human-computer interaction interface, etc., and achieve the effect of improving friendliness and expanding application fields.
Active Publication Date: 2014-11-19
FUJIAN FOXIT SOFTWARE DEV LTD
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Problems solved by technology
The disadvantage of this technology is that the handwriting data is only the connection of stroke points, and the color is very single, which is very different from the handwriting actually written by the user. Therefore, the human-computer interaction interface of the prior art is poor, which seriously affects the use of this technology. Applications in painting, signing and other fields
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[0017] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0018] The present invention proposes a method for displaying handwriting in a PDF file. The handwriting described in the present invention is written on the screen by a paintbrush, where the handwriting can be Chinese characters, pictures, or letters. The screen in the present invention can be a touch screen, a screen of a tablet, etc., or a display, etc. Depending on the screen, the paintbrush is also different. For example, when the screen is a touch screen or tablet screen, the paintbrush can be a human finger or any hard object, such as a pencil, pen, etc.; when the screen is a display, the paintbrush can be used mouse to achieve.
[0019] figure 1 The flow chart of the method for displaying handwriting in PD...
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The invention relates to a method for displaying handwriting in a PDF file. The method comprises the steps of determining the insertion position of a handwriting label in the PDF file; correspondingly recording coordinates and pressure data of all stroke points on a screen with which a brush makes contact, and recording the sequence in which the brush makes contact with the stroke points; establishing corresponding relations between the pressure data and colors so as to establish the corresponding relations between the coordinates of the stroke points and the colors; displaying the stroke points with corresponding colors; connecting all the stroke points according to the sequence in which the brush makes contact with the stroke points to form handwriting data, wherein the colors of connecting lines between the adjacent stroke points are displayed according to the function rule; forming an appearance graph according to the handwriting data, and combining the handwriting data and the appearance graph into the handwriting label; embedding the handwriting label into the insertion position in the PDF file. By means of the method, the displayed handwriting is closer to the true handwriting of a user, the friendliness of a human-computer interaction interface is improved, and the application field is expanded.
Description
technical field [0001] The invention relates to the technical field of displaying handwriting in PDF files, in particular to a method for displaying handwriting in PDF files. Background technique [0002] With the development of technologies such as sensors and touch screens, it becomes possible to display handwriting input by brushes in PDF files. The existing technology stores the coordinates of each stroke point and the order in which the brush touches the stroke points, and then connects each stroke point to form a handwriting data, and then embeds the handwriting data into a PDF file, and finally displays in the PDF file Entered handwriting. The disadvantage of this technology is that the handwriting data is only the connection of stroke points, and the color is very single, which is very different from the handwriting actually written by the user. Therefore, the human-computer interaction interface of the prior art is poor, which seriously affects the use of this tech...
Claims
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IPC IPC(8): G06F3/0488
Inventor 刘孙亮
Owner FUJIAN FOXIT SOFTWARE DEV LTD