CN100498927C - Dot-character retracting method in two-dimension pattern engines and Chinese processing method - Google Patents
Dot-character retracting method in two-dimension pattern engines and Chinese processing method Download PDFInfo
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Abstract
The invention discloses an indent method of dot-matrix characters in a two-dimensional graphic engine, as well as a Chinese processing method finished with the algorithm. The invention comprises following steps: reading character data; opening a dot character library file for standby; processing the encrypted characters of the character data; using the indent method of dot-matrix characters to calculate the real length of each character, and obtaining the total length of all the read-in characters after accumulation; processing the heights and the row distances of characters; compared the total length of characters with a screen width, carrying on ellipsis processing or line shifting processing to the characters which overpass the screen, and recording the total length of the characters which can be displayed; setting the various channel attributes of the two-dimensional graphic engine and a buffer; processing and calculating the positions of middle, left alignment, and right alignment in a Chinese display; using the indent method of indention for dot-matrix characters to reduce characters; and sending the characters after reduction to the two-dimensional graphic channel for display output.
Description
Technical field
The present invention relates to use 2 dimension graphics engines to support the technology of dot matrix word library.Be particularly related to the indentation algorithm of dot character.
Background technology
At present increasing embedded product uses the X-Y scheme engine to support the TV OSD layer of picture and text to show.This is essential with regard to making that the display technique of supporting Chinese becomes.Yet because the limitation of 2D graphics engine, it can not support vector font library, therefore can only select to use dot matrix word library as the character library of supporting that Chinese is required.
In the dot character storehouse, comprised ASCII character and Chinese character and other symbols, each character is all used one 0,1 bitmap is represented.If wherein a certain position is 1, represent that then this character need be filled on this, therefore the color of this position should be changed to character color.If this position is 0, represent that then this does not need to be filled, should be changed to background color corresponding to this color.In actual applications, can be converted to dot matrix word character library by vector ASCII character and the Chinese character that uses among the Windows, thereby multiple font (as the Song typeface, regular script, black matrix, young garden etc.) can be arranged, every kind of font has multiple big ting model again, can select required font and character model according to the actual requirements like this.
The method that shows Chinese character under the western language environment is to call the Chinese character storehouse to carry out the Chinese character demonstration.The ISN of GB Chinese character is from AO-FF, and first byte is called the district, and second byte is called the position, and available Chinese character has only 96 of 96 district *.ASCII character in the character set is 1 Byte, its 16 system maximum be FFH, i.e. 255 western language characters, Here it is common character as "+", " ^ " etc., also comprises graphic character etc. in addition.Chinese character is made up of two bytes, and the definition of early stage country is that 1 Word (2 Byte) represents a Chinese character.National Specification: Chinese character base divides 94 districts, and there are 94 Chinese characters (distinguishing with the position) in each district, and each Chinese character has definite district and bit number in Chinese character base, the region-position code of Here it is Chinese character.Each Chinese character with the storage of dot-matrix font form, generally adopts 16 * 16 dot matrix (32 byte), 24 * 24 dot matrix (72 byte) in the storehouse, each point represents that with bit (0 or 1) corresponding showing is exactly corresponding Chinese character on screen.
Because under Chinese environment, input be the ISN of Chinese character, therefore must to the region-position code of convert, calculate side-play amount, from character library, find corresponding Chinese character, its type matrix is shown get final product.
Yet, use dot character that the shortcoming of its existence is also arranged.Its main shortcoming is exactly for a character that can't fill up 24 dot matrix (being the example explanation with 24 dot matrix word libraries here), will have in the display space of 24*24 when very most of by empty.This has just caused the effect after some character shows extremely loose.If run into continuous ascii character, then the effect that shows of dot matrix word library can't allow the people accept.As, for the vocabulary " lily " of an English, owing to use 24 dot matrix word libraries, the effect that shows has then become " lily ".Therefore the dot matrix word library display technique is still waiting to improve.
Summary of the invention
The objective of the invention is to overcome dot matrix word library owing to limit by dot matrix, the loose problem of character that when many ascii characters show continuously, is occurred, thus a kind of method that can carry out the indentation processing effectively to dot character is provided.
To achieve these goals, the invention provides the indentation method of the dot character in a kind of X-Y scheme engine, may further comprise the steps:
A), from the one section character that reads in, take out a character, judge whether current character has exceeded the total byte length of this section character, as if not surpassing, then carry out next step, carry out cycle calculations with the byte number; Otherwise, interrupt carrying out, jump out circulation;
B), distinguish that current character is that Chinese character still is English character or symbol, if Chinese character is carried out next step, if English character or symbol, execution in step d);
C), Chinese character is converted into region-position code by 16 system ISNs, execution in step e then);
D), English character or symbol are converted into region-position code by 16 system ISNs, execution in step e then);
E), the dot character library file of opening is positioned retrieval, read the type matrix of the dot character of character, and deposit in the two-dimensional array by region-position code;
F), each value of two-dimensional array is done AND operation respectively, obtain and write down the position of leftmost point and rightmost point in the dot character, the position of rightmost point and the position of leftmost point are subtracted each other, can obtain the physical length of a character, and cut out for the blank parts of the left and right sides;
G), turn back to step a).
A kind of Chinese language processing method of using the indentation method of the dot character in the described X-Y scheme engine comprises:
1), from the reception metadata cache of X-Y scheme engine, read the character data within 256 bytes, and be provided with mark with identification whether need to continue to read;
2), open dot character library file for standby;
3), the encrypted characters in the character data is handled;
4), utilize the indentation method of dot character to calculate the physical length of each character read in, the physical length of each character that adds up then obtains the total length that all read in character;
5), the height and the line space of processing character, the height of character and line space addition are obtained the lengthwise position of character;
6), character total length and the screen width that obtains in the step 4) compared,, then the character that exceeds screen is done to omit and handle or do line feed and handle if the overall width of character surpasses the width of screen, and the total length of the record character that can show;
7), output, input channel attribute and the buffer to the X-Y scheme engine is provided with;
8) placed in the middle, left-justify and right-aligned position during the overall width that reads in character after, the indentation that utilizes step 4) and drawn is handled shows Chinese are handled and are calculated;
9), utilize the indentation method of dot character that the institute that obtains in the step 6) can character display be reduced;
10), the medium output to be shown of X-Y scheme passage sent in the character after will reducing.
In the technique scheme, the dot character in the described dot character library file comprises 16 * 16 dot matrix word libraries, 20 * 20 dot matrix word libraries, 24 * 24 dot matrix word libraries, 32 * 32 dot matrix word libraries.
In the technique scheme, in described step 7), when output, input channel attribute and the buffer of X-Y scheme engine is provided with, three input channels and output channel of X-Y scheme engine is set respectively, and input, the employed buffer of output channel.
The invention has the advantages that:
Indentation algorithm by the dot character in the X-Y scheme engine carries out indentation to dot character, makes that the character in the dot matrix word library can be good at combining, and has reduced the spacing of character, and it is more attractive in appearance to make it to see that it comes.And utilize the indentation algorithm of dot character that effective correction has been done in the Chinese language processing in the X-Y scheme engine, enable well to handle various requirement in conjunction with the indentation algorithm of dot character.
Description of drawings
Fig. 1 is the process flow diagram of dot character indentation method;
Fig. 2 is the process flow diagram of the Chinese language processing method in a kind of X-Y scheme engine of the present invention;
Fig. 3 is putting in order of 24 dot character points;
Fig. 4 is character display effect and the character comparison diagram that before not handling after handling by the indentation method.
Embodiment
Describe below in conjunction with the indentation method of the drawings and specific embodiments embedded system dot character of the present invention.
In the present embodiment, suppose to adopt in the character library 24 * 24 dot matrix, as shown in Figure 1 and Figure 2, processing procedure, indentation method and the flow for displaying of dot character in embedded system is as follows.
Whether step 1, read character data from receive metadata cache, character data must be within 256 bytes, and mark is set needs to continue to read with identification;
Step 2, open dot character library file, prepare to call;
Step 3, handle encrypted characters according to the attribute of character, described encrypted characters comprises that password, user name etc. need the character of special processing.
Step 4, utilize indentation algorithm each character physical length that accurate Calculation is read in respectively after, obtains the total length that all read in character through adding up.In this step, the total length of character is calculated the indentation overall width that is meant the full line character calculate, its objective is in order when handling the overlength character, to be convenient to the width and the character overall width of screen are compared.Owing to before character shows on screen, need do indentation and handle, avoid the too loose defective of character pitch common in the prior art, therefore, the width of the character after the indentation is 24 no longer entirely, can determine because of the difference of each character duration.When calculating, also just can not think again generally a line character overall width as shown in Equation (1), the number that equals this style of writing word multiply by 24, but as shown in Equation (2), should for the width of each character add up with.
Character overall width=24* character number (1)
Width behind character overall width=single character indentation add up (2)
24 dot characters get rule ready as shown in Figure 3: as can be seen from the figure the character of 24 dot matrix by 24 the row, 24 compositions of every row.Each point all is a point of forming literal, if this literal illustrates that for " 1 " this point should be revealed at this point, otherwise this point does not show.
Use bit arithmetic in 24 points of each row for after the reference position bejin_pos of the point of " 1 " and final position end_pos write down, compare initial value bejin_pos and stop value end_pos that each line item gets off, select wherein minimum initial value bejin_pos and maximum stop value end_pos to locate the position of this character in the 24*24 dot matrix.In case literal is positioned, just can literal be reduced by the part of the left side and the right blank, and the developed width of the literal that each process is reduced is as shown in Equation 3:
Each is through the developed width=stop value end_pos-initial value bejin_pos (3) of the literal of reduction
After trying to achieve the width behind each character indentation, can try to achieve the total length of character according to formula (2).
The height of step 5, processing character and line space, the height of character and line space added up just can obtain being presented at the lengthwise position of the character on the screen.
Step 6, character overall width and the screen width that utilizes the indentation algorithm computation to obtain in the step 4 compared,, then the character that exceeds screen is done to omit and handle or do line feed and handle if the overall width of character surpasses the width of screen.If desired character is done to omit and handle, then also will determine the width of character one by one, prepare to abandon the character that exceeds screen at any time.
Step 7, the various channel attributes and the buffer (BUFFER) of X-Y scheme engine is provided with; Wherein, be provided with three input channels and output channel of 2D graphics engine respectively, and input, the employed buffer of output channel.
Handle and accurate Calculation placed in the middle, left-justify and right-aligned position during step 8, the overall width that reads in this section character after utilizing the indentation that is drawn of step 4 to handle show Chinese.
Step 9, get a character, judge whether current character has exceeded the length of the character that reads in the step 1,, then carry out next step if do not surpass, otherwise, interrupt carrying out, jump out circulation.
Character is to read in the form of 16 system ISNs, and Length is the shared byte number of character that reads in.A Chinese character need take two bytes, and English or symbol take a byte.If Chinese, while circulates every circulation primary m from adding two, if English or symbol then while circulate every circulation primary m from adding one.M is a totalizer, controls current while circular treatment on which byte, and promptly this reads in m and m+1 byte in all bytes if Chinese is then when pre-treatment, if English or symbol then handle this read in all bytes in the m byte
Step 10, distinguish that current character is that Chinese character still is English character or symbol, if Chinese character is carried out next step, if English or symbol, execution in step 12; In ASCII character, Chinese character accounts for two bytes, and English or symbol only account for a byte, if not treated directly interior code data being sent in the function that reads font file gone, mistake will appear, what cause reading is that mess code or the misregistration character that retrieves from character library are true, therefore need distinguish Chinese and English and symbol, and processing respectively.
Step 11, Chinese character is converted into region-position code by 16 system ISNs, execution in step 13 then; Wherein Zhong Wen district's sign indicating number equals m byte data (text[m]) and deducts 0xa0 again, and bit code then is that the data (text[m+1]) of m+1 byte deduct 0xa0 again.Promptly sign indicating number=text[m distinguished in Chinese]-0xa0, Chinese bit code=text[m+1]-0xa1.
Step 12, English character or symbol are converted into region-position code by 16 system ISNs, execution in step 13 then; English or symbol have the fixed area sign indicating number, and their district's sign indicating number all is 0xa3, and bit code then is to deduct 0xa0 again after the data (text[m]) after the content of m byte converts 16 systems to add 0x80.
Step 13, font file is positioned retrieval by region-position code; Obtain by above-mentioned steps calculating the side-play amount of this character in character library after the region-position code of character.Side-play amount=((district's sign indicating number-1) * 94+ (bit code-1)) * 72, wherein 94 expressions have 94 districts, and character of 72 expressions uses 72 bytes to come mark, and the mark here is 0,1 the mark of getting ready.It is equivalent to delegation 24 points (24 points account for three bytes, and 8 of each bytes are 8 points), and one has 24 row.Therefore need 24 * 3 bytes to represent the character of one 24 dot matrix.Calculate after the side-play amount 72 bytes of reading this character in the character library again according to side-play amount.
Step 14, utilize thought in the indentation algorithm that current character is carried out indentation to calculate, determine the reference position of character late.
Step 15, current character is sent into the medium output to be shown of X-Y scheme passage, get character late then and forward step 9 to.
The indentation algorithm that above-mentioned steps 4 adopts has carried out accurate indentation to the total length that reads in character and has calculated and think that placed in the middle, left-justify, right-aligned demonstration provide accurate length computation data.
Above-mentioned steps 9 has adopted the processing thought of indentation algorithm to step 14, and character of every processing will read 0,1 distribution situation of this character from character library, and promptly 0 of 72 bytes, 1 distributes.According to the disposal route of indentation algorithm this character is carried out indentation afterwards, and obtain the start address of next character.
Above-mentioned steps 15 is the type matrix of handling through indentation, and the output buffers passage of sending into the 2D graphics engine at last is medium to be shown.Generally use 0 of character to use background colour or do transparent demonstration for the demonstration of character, and the color that 1 use is different from background colour shows.
As shown in Figure 1, the indentation of the described character of above-mentioned steps calculating specific implementation step is as follows:
Step 300: the one section character that reads in is carried out cycle calculations with the byte number.Because the character that reads in is all read among the BUFFER with the form of byte.Therefore the number according to byte circulates, and withdraws from this circulation after all bytes finish fully.
Step 301:, handle respectively according to the difference of Chinese character with English and symbol.Because each character is to read in the form of ISN when reading in, Chinese inner code accounts for two bytes, and English or symbol account for a byte.If not treatedly directly ISN is sent into, mistake will appear, and what cause reading is mess code, or misregistration character is true.
ISN-the 0xa0 of Chinese character district sign indicating number=m byte
ISN-the 0xa0 of Chinese character bit code=m+1 character
District sign indicating number=the 0xa3 of English or symbol
ISN+the 0x80-0xa0 of the bit code of English or symbol=m byte
Step 302: font file is positioned retrieval by region-position code.The side-play amount of this character in the character library that the retrieval by window dependence character area bit code of font file is calculated.
Side-play amount=((district's sign indicating number-1) * 94+ (bit code-1)) * 72
Step 303: it is that 72 byte Buffer (be made up of 24 * 24 points by the Chinese of one 24 dot matrix that the type matrix that reads dot character according to side-play amount from character library is put into size, per 8 points are bytes, there are 3 bytes in delegation like this, 24 go altogether, once for 0,1 font file, it uses 24 * 3 bytes to represent a character), if this position is 1, represent that then these needs of this character are filled, therefore the color of this position should be changed to character color.If this position is 0, represent that then this does not need to be filled, should be changed to background color corresponding to this color.
Step 304: each value to two-dimensional array is done AND operation respectively, obtains and write down the position of leftmost point and rightmost point in this 24 dot character, then can cut out for the blank parts of those left and right sides.
Step 305: to each character of this section character reduce one by one and its width that adds up after, can obtain the developed width of this section character.
With character " i " is example, and method of the present invention is described.Shown in Figure 4 is does not use demonstration and the demonstration situation of using behind the indentation algorithm before the indentation algorithm.The demonstration of handling first three character " i " as can be seen distributes and does not disperse, and handles the tangible improvement of being distributed with of back three " i ", and tangible reduction has been carried out on the left side and the right side of character " i ".
Processing to three characters " i " is at first read corresponding type matrix according to dot character indentation algorithm from character library, and by computing to 0 and 1 in the type matrix, obtain initial value bejin_pos (initial value bejin_pos=8) and stop value end_pos (stop value end_pos=14).The developed width of i deducts initial value bejin_pos (stop value end_pos one initial value bejin_pos=6) for stop value end_pos.The overall width of three character i is 6 * 3=18.Here ignore as placed in the middle, exceed processing requirements such as screen character.Suppose that three characters only require left-justify, the reference position on screen of first i=screen edge width X1+0 then according to reference position and 0 and 1 put in order, uses background colour to show to 0, and the color that 1 use is different from background colour shows.The reference position on screen=screen edge width+6 (developed width of first i) of second i+character pitch (set up on their own, be generally 0), display packing is identical with first character i, just the reference position difference.The reference position on screen=screen edge width+12 (developed widths of two i) of the 3rd i+character pitch (set up on their own, be generally 0), display packing is identical with first character i, just the reference position difference.
Three character i crossing through the dot character indentation algorithm process of two bit pattern engines just can have simply been shown by above processing.
Claims (4)
1, the indentation method of the dot character in a kind of X-Y scheme engine may further comprise the steps:
A), read in one section character, from the one section character that reads in, take out a character, judge whether current character has exceeded the total byte length of this section character, as if not surpassing, then carry out next step, carry out cycle calculations with the byte number; Otherwise, interrupt carrying out, jump out circulation;
B), distinguish that current character is that Chinese character still is English character or symbol, if Chinese character is carried out next step, if English character or symbol, execution in step d);
C), Chinese character is converted into region-position code by 16 system ISNs, execution in step e then);
D), English character or symbol are converted into region-position code by 16 system ISNs, execution in step e then);
E), the dot character library file of opening is positioned retrieval, read the type matrix of the dot character of character, and deposit in the two-dimensional array by region-position code;
F), each value of two-dimensional array is done AND operation respectively, obtain and write down the position of leftmost point and rightmost point in the dot character, the position of rightmost point and the position of leftmost point are subtracted each other, can obtain the physical length of a character, and cut out for the blank parts of the left and right sides;
G), turn back to step a).
2, a kind of application rights requires the Chinese language processing method of the indentation method of the dot character in the 1 described X-Y scheme engine, comprising:
1), from the reception metadata cache of X-Y scheme engine, read the character data within 256 bytes, and be provided with mark with identification whether need to continue to read;
2), open dot character library file for standby;
3), the encrypted characters in the character data is handled;
4), utilize the indentation method of dot character to calculate the physical length of each character read in, the physical length of each character that adds up then obtains the total length that all read in character;
5), the height and the line space of processing character, the height of character and line space addition are obtained the lengthwise position of character;
6), character total length and the screen width that obtains in the step 4) compared,, then the character that exceeds screen is done to omit and handle or do line feed and handle if the overall width of character surpasses the width of screen, and the total length of the record character that can show;
7), output, input channel attribute and the buffer to the X-Y scheme engine is provided with;
8) placed in the middle, left-justify and right-aligned position during the overall width that reads in character after, the indentation that utilizes step 4) and drawn is handled shows Chinese are handled and are calculated;
9), utilize the indentation method of dot character that the institute that obtains in the step 6) can character display be reduced;
10), the medium output to be shown of X-Y scheme passage sent in the character after will reducing.
3, the Chinese language processing method of the indentation method of the dot character in the X-Y scheme engine according to claim 2, it is characterized in that the dot character in the described dot character library file comprises 16 * 16 dot matrix word libraries, 20 * 20 dot matrix word libraries, 24 * 24 dot matrix word libraries, 32 * 32 dot matrix word libraries.
4, the Chinese language processing method of the indentation method of the dot character in the X-Y scheme engine according to claim 2, it is characterized in that, in described step 7), when output, input channel attribute and the buffer of X-Y scheme engine is provided with, three input channels and an output channel of X-Y scheme engine are set respectively, and input, the employed buffer of output channel.
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| CN101763845A (en) * | 2008-12-26 | 2010-06-30 | 上海闻泰电子科技有限公司 | Method for calculating the display width of characters in a dot matrix character library |
| CN101599264B (en) * | 2009-07-15 | 2011-10-12 | 青岛海信移动通信技术股份有限公司 | Method and relevant device for displaying characters on mobile terminal |
| CN102117266B (en) * | 2009-12-31 | 2013-07-10 | 北京谊安医疗系统股份有限公司 | Method and device for processing character pitch |
| CN103186507B (en) * | 2011-12-31 | 2016-12-28 | 北京大唐高鸿软件技术有限公司 | Dot matrix word library processing method |
| CN102761418B (en) * | 2012-07-16 | 2015-04-22 | 重庆电子工程职业学院 | Character compression encrypting method |
| CN104834701B (en) * | 2015-04-28 | 2019-03-26 | 成都品果科技有限公司 | Intelligent search result presentation method based on IOS system |
| CN104932846B (en) * | 2015-06-08 | 2018-03-09 | 中国人民解放军91872部队 | A kind of Russian character print output intent of test equipment |
| CN108242211A (en) * | 2016-12-26 | 2018-07-03 | 航天信息股份有限公司 | Processing method, device and the board units of dot character |
| CN108804066A (en) * | 2018-06-11 | 2018-11-13 | 深圳市琥蜂科技有限公司 | The display methods and computer readable storage medium of screen display character |
| CN110106684B (en) * | 2019-05-23 | 2021-11-05 | 卓力电器集团有限公司 | Intelligent control system of electric iron |
| CN112242118B (en) * | 2019-07-16 | 2021-11-16 | 西安诺瓦星云科技股份有限公司 | Information scrolling display method, device and system |
| CN112115708A (en) * | 2020-08-31 | 2020-12-22 | 深圳市镜玩科技有限公司 | Adaptive label display method, related device, equipment and medium |
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