Display method and display device of vector font characters
A display method and technology of vector characters, applied to static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of excessive calculation of the vector font engine, reduce the display speed of vector font characters, etc., and achieve faster display speed, The effect of reducing the amount of calculation
Active Publication Date: 2012-10-03
SHENZHEN IPANEL TECH LTD
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Problems solved by technology
The excessive calculation of the vector font engine reduces the display speed of the vector font characters
Method used
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Embodiment 1
[0031] see figure 2 , an embodiment of the method shown in the embodiment of the present invention, including
[0032] 101. Obtain the character to be displayed currently and the foreground color and background color of the character to be displayed currently;
[0033] During the process of displaying the vector characters, the vector font library engine obtains the characters to be displayed currently and the color of the characters to be displayed currently sent by the application program, and the color of the characters to be displayed currently is the foreground color. At the same time, the vector font library engine acquires the color of the center point of the area where the characters to be displayed currently are to be displayed as the background color.
[0034] refer to image 3 , taking the character "中" as an example, according to the target position of the character display and the size of the character grayscale bitmap, select the color of the center point 3 of...
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The invention discloses a display method of vector font characters, which comprises the steps of obtaining characters to be displayed and foreground color and background color of the characters to be displayed; calculating all display colors corresponding to the gray values in the gray level of a vector font engine according to the foreground color and background color of the characters to be displayed and saving the congruent relationship of the gray values and the calculated display colors; and obtaining a gray level bitmap of the characters to be displayed, obtaining and displaying the display colors corresponding to the saved gray values according to the gray value of each display point in the gray level bitmap. The embodiment of the invention also provides a display device of vector font characters. By adopting the method for calculating the display colors corresponding to the gray values in the gray level and saving the relationship of the gray values and the display colors in the technical scheme, the display speed of the vector font characters is increased.
Description
technical field [0001] The invention relates to the technical field of character display, in particular to a method and a display device for displaying vector font characters. Background technique [0002] Character display is generally divided into dot matrix fonts and vector fonts. Each glyph in vector fonts is described by a mathematical curve, which includes key points on the glyph boundary, derivative information of lines, etc. The rendering engine of the font reads These mathematical vectors are then rendered by performing certain mathematical operations. The advantage of vector fonts is that the actual size of the font can be scaled arbitrarily without deformation or discoloration. Therefore, vector fonts are widely used in current display devices. [0003] The current display method of vector font characters is that the vector font engine calculates the grayscale bitmap of the character, and the brightness of each display point in the grayscale bitmap is represente...
Claims
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IPC IPC(8): G09G5/22G09G5/30
Inventor 徐佳宏程伯钦朱吕亮
Owner SHENZHEN IPANEL TECH LTD