Composite underlining functions for text processors

• US 5,289,169 A
• Filed: 01/31/1991
• Issued: 02/22/1994
• Est. Priority Date: 01/31/1991
• Status: Expired due to Fees

• Current Assignee: Frame Technology Corp (Adobe Inc.)
• Original Assignee: Frame Technology Corp (Adobe Inc.)
• Inventors: Murray, David J., Sundberg, Sandra A., Kessler, Edward J., Corfield, Charles N.
• Primary Examiner(s): Boudreau, Leo H.
• Application Number:
  US07/648,291
• Time in Patent Office: 1,118 Days
• Field of Search: 382/61, 395/144, 395/145, 395/146, 395/147, 395/148, 395/149, 395/150, 395/151, 395/143, 340/730, 340/735, 340/748, 340/750
• US Class Current: 345/469.1
• CPC Class Codes: G06F 40/109 Font handling; Temporal or kinetic typography
• CPC Class Codes: G06F 40/166 Editing, e.g. inserting or deleting
• CPC Class Codes: G06F 40/189 Automatic justification

Abstract

Disclosed are text processing methods and text processing apparatus in an imaging system which images text characters and associated text functions, and specifically images text underline functions. The imaging system operates to control the appearance of rules for underlining functions, by controlling the offset (O), thickness (T) and gap (G) parameters as a function of user input values and as a function of font size (F_-- size) and typeface parameters (Para_-- 1 and Para_-- 2). A plurality of underline algorithms including a homogeneous algorithm and a composite algorithm are provided for controlling rules.

Claims

1. In an imaging system including a text processor having underlining functions, the method of imaging rules for characters of one or more fonts comprising:

reading user inputs for specifying underline algorithms and defining the characteristics of the rules for a particular one or more of the underlining functions,

selecting an underline algorithm from a plurality of underline algorithms as a function of the user inputs,

configuring the manner in which the selected algorithm depends on font properties as a function of the user inputs and for said particular one or more of the underlining functions, modifying the characteristics of the rules as a function of the user inputs,

drawing the rules in accordance with the underline algorithm.

2. The method of claim 1 wherein one of said underline algorithms is a homogeneous underline algorithm for drawing rules as a function of typeface and font size.

3. The method of claim 2 wherein said homogeneous underline algorithm controls the rules to be drawn as a function of typeface parameters from a metric table.

4. The method of claim 1 wherein one of said underline algorithms is a composite algorithm for drawing rules based upon a composite array of user inputs.

5. The method of claim 4 wherein said composite algorithm is configured independently of font size and typeface.

6. The method of claim 1 wherein said underlining functions include a homogeneous algorithm for drawing rules as a function of typeface and font size without user inputs and wherein one of said underline algorithms is a composite algorithm for drawing rules based upon a composite array of user inputs.

7. In an imaging system including a text processor having underlining functions, the method of imaging rules for text characters of one or more fonts wherein the text characters have a font size, F_-- size, and a typestyle defined by metric parameters, Para_-- 1 and Para_-- 2, comprising:

reading user inputs for defining the characteristics of the rules for an underlining function,

selecting an underline algorithm from a plurality of underline algorithms as a function of the user inputs wherein one of said underline algorithms is a composite algorithm for drawing rules based upon a composite array of user inputs, and wherein said composite algorithm combines said font size and parameters as a function of said user inputs,

configuring the manner in which the selected algorithm depends on font properties as a function of the user inputs,

drawing the rules in accordance with the selected underline algorithm.

8. The method of claim 7 wherein said composite array combines said user inputs to define an offset, O, of a first rule relative to said text characters, to define a thickness, T, of one or more rules including the first rule and a second rule and to define a gap, G, between the first rule and the second rule using a composite array having input values X,Y,Z;

X'"'"',Y'"'"',Z'"'"';

X",Y", Z" as follows;

O=X(F_-- size)+Y(F_-- size, Para_--

     1)+Z

T=X'"'"'(F_-- size)+Y'"'"'(F_-- size, Para_--

     2)+Z'"'"'

G=X"(F_-- size)+Y"(F_-- size, Para_--

     2)+Z"

9. In an imaging system including a text processor having underlining functions, the method of imaging rules for text characters of one or more fonts wherein the text characters have a font size, F_-- size, and a typestyle defined by metric parameters, Para_-- 1 and Para_-- 2, comprising:

reading user inputs for defining the characteristics of the rules for an underlining function,

selecting an underline algorithm from a plurality of underline algorithms as a function of the user inputs wherein said underlining functions include a homogeneous algorithm for drawing rules as a function of typeface and font size without user inputs and wherein one of said underline algorithms is a composite algorithm for drawing rules based upon a composite array of user inputs, and wherein said composite algorithm combines said font size and parameters as a function of said user inputs,

configuring the manner in which the selected underline algorithm depends on font properties as a function of the user inputs,

drawing the rules in accordance with the selected underline algorithm.

10. The method of claim 9 wherein said composite array combines said user inputs to define an offset, O, of a first rule relative to said text characters, to define a thickness, T, of one or more rules including the first rule and a second rule and to define a gap, G, between the first rule and the second rule using a composite array having input values X,Y,Z;

X'"'"',Y'"'"',Z'"'"';

X", Y", Z" as follows;

O=X(F_-- size)+Y(F_-- size, Para_--

     1)+Z

T=X'"'"'(F_-- size)+Y'"'"'(F_-- size, Para_--

     2)+Z'"'"'

G=X"(F_-- size)+Y"(F_-- size, Para_--

     2)+Z".

11. In an imaging system including a text processor for processing text characters and associated text functions where the text characters are arrayed along a baseline in runs having a font size, F_-- size, and a typestyle defined by metric parameters including a rule position, Underline_-- Position, and a rule thickness, Underline_-- Thickness, and wherein each run has the same font size, metric parameters, and text function characteristics, the method of imaging the text characters and the text functions comprising:

processing runs of text characters and for each run,

reading user inputs for defining the characteristics of the text functions, wherein said reading step includes reading nine multipliers X,Y,Z;

X'"'"',Y'"'"', Z'"'"';

X",Y", Z" which define an offset, O, of a first rule from the baseline, which define a thickness, T, of rules and which define a gap, G, between the first and second rule using a composite array as follows;

O=X * F_-- size+H * F_-- size * Underline_-- Position+Z

T=X'"'"'* F_-- size+Y'"'"'* F_-- size * Underline_-- Thickness+Z'"'"'

G=X"* F_-- size+Y"* F_-- size * Underline_-- Thickness+Z"

selecting a function algorithm from a plurality of function algorithms in response to the user inputs,

drawing the text functions based upon the selected function algorithm, and

drawing the text characters.

12. The method of claim 11 wherein in said reading step said nine multipliers X, Y,Z;

X'"'"', Y'"'"',Z'"'"';

X",Y",Z" are user selected with 0,1 or other integer or fractional values.

13. In an imaging system including a text processor for processing text characters and associated text functions where the text characters are arrayed along a baseline in runs having a font size, F_-- size, and a typestyle defined by a first parameter, Para_-- 1, and a second parameter, Para_-- 2, and wherein each run has the same font size, metric parameters, and text function characteristics, the method of imaging the text characters and the text function comprising:

processing runs of text characteristics of the text functions, wherein said reading step includes reading nine input values X,Y,Z;

X'"'"',Y'"'"',Z'"'"';

X",Y", Z" which define an offset, O, of a first image relative to the baseline, which define a thickness, T, of one or more images and which define a gap, G, of a first image relative to a second image using a composite array as follows;

O=X(F_-- size)+Y(F_-- size, Para_--

     1)+Z

T=X'"'"'(F_-- size)+Y'"'"'(F_-- size, Para_--

     2)+Z'"'"'

G=X"(F_-- size)+Y"(F_-- size, Para_--

     2)+Z"

selecting a function algorithm from a plurality of function algorithms in response to the user inputs,

drawing the text functions based upon the selected function algorithm, and

drawing the text characters.

14. The method of claim 13 wherein in said reading step said nine multipliers X, Y,Z;

X'"'"',Y'"'"',Z'"'"';

X",Y",Z" are used selected with 0, 1 or other integer or fractional values.

15. In an imaging system including a text processor having underlining functions, the method of imaging rules for text characters of one or more fonts, wherein the text characters have a font size, F_-- size, and a typestyle defined by metric parameters, Para_-- 1 and Para_-- 2, comprising:

reading user inputs for defining the characteristics of the rules for the underlining function,

selecting an underline algorithm from a plurality of underline algorithms as a function of the user inputs, said underline algorithms including an algorithm having a double underline function and including a composite algorithm for drawing rules based upon a composite array of user inputs and wherein said composite algorithm combines said font size and parameters as a function of said user inputs,

configuring the manner in which the selected algorithm depends on font properties as a function of the user inputs,

drawing the rules in accordance with the underline algorithm.

16. The method of claim 15 wherein said composite array combines said user inputs to define an offset, O, of a first rule relative to said text characters, to define a thickness, T, of one or more rules including the first rule and a second rule and to define a gap, G, between the first rule and the second rule using a composite array having input values X,Y,Z;

X'"'"',Y'"'"',Z'"'"';

X",Y",Z" as follows;

O=X(F_-- size)+Y(F_-- size, Para_--

     1)+Z

T=X'"'"'(F_-- size)+Y'"'"'(F_-- size, Para_--

     2)+Z'"'"'

G=X"(F_-- size)+Y"(F_-- size, Para_--

     2)+Z".

17. In an imaging system including a text processor having underlining functions, the method of imaging rules for text characters of one or more fonts, wherein the text characters have a font size, F_-- size, and a typestyle defined by metric parameters, Para_-- 1 and Para_-- 2, comprising:

reading user inputs for defining the characteristics of the rules for the underlining function,

selecting an underline algorithm from a plurality of underline algorithms as a function of the user inputs, said underline algorithms including an algorithm having a double underlining function and including a homogeneous algorithm for drawing rules as a function of typeface and font size without user inputs and wherein one of said underline algorithms is a composite algorithm for drawing rules based upon a composite array of user inputs, and wherein said composite algorithm combines said font size and parameters as a function of said user inputs,

configuring the manner in which the selected algorithm depends on font properties as a function of the user inputs,

drawing the rules in accordance with the underline algorithm.

18. The method of claim 17 wherein said composite array combines said user inputs to define an offset, O, of a first rule relative to said text characters, to define a thickness, T, of one or more rules including the first rule and a second rule and to define a gap, G, between the first rule and the second rule using a composite array having input values X,Y,Z;

X'"'"',Y'"'"'Z'"'"';

X",Y",Z" as follows;

O=X(F_-- size)+Y(F_-- size, Para_--

     1)+Z

T=X'"'"'(F_-- size)+Y'"'"'(F_-- size, Para_--

     2)+Z'"'"'

G=X"(F_-- size)+Y"(F_-- size, Para_--

     2)+Z".

19. In an imaging system including a text processor for processing text characters and associated text functions where the text characters are arrayed along a baseline in runs having a font size, F_-- size, and a typestyle defined by metric parameters including a rule position, Underline_-- Position, and a rule thickness, Underline_-- Thickness, and wherein each run has the same font size, metric parameters, and text function characteristics, the method of imaging the text characters and the text functions comprising:

processing runs of text characters and for each run,

reading user inputs for defining the characteristics of the text functions,

selecting a function algorithm from a plurality of function algorithms in response to the user inputs,

drawing the text functions based upon the selected function algorithm, said function algorithms including a double underlining function, and

drawing the text characters.

20. The method of claim 19 wherein said reading step includes reading nine multipliers X,Y,Z;

X'"'"',Y'"'"',Z'"'"';

X",Y",Z" which define an offset, O, of a first rule from the baseline, which define a thickness, T, of rules and which define a gap, G, between the first and a second rule using a composite array as follows;

O=X * F_-- size+Y * F_-- size * Underline_-- Position+Z

T=X'"'"'* F_-- size+Y'"'"'* F_-- size * Underline_-- Thickness+Z'"'"'

G=X"* F_-- size+Y"* F_-- size * Underline_-- Thickness+Z".

21. The method of claim 20 wherein in said reading step said nine multipliers X,Y,Z;

X'"'"',Y'"'"',Z'"'"';

X",Y",Z" are user selected with 0,1 or other integer or fractional values.

22. In an imaging system including a text processor for processing text characters and associated text functions where the text characters are arrayed along a baseline in runs having a font size, F_-- size, and a typestyle defined by a first parameter, Para_-- 1, and a second parameter, Para_-- 2, and wherein each run has the same font size, metric parameters, and text function characteristics, the method of imaging the text characters and the text functioning comprising:

processing runs of text characters and for each run,

reading user inputs for defining the characteristics of the text functions, wherein said reading step includes reading nine input values X,Y,Z;

X'"'"',Y'"'"',Z'"'"';

X",Y", Z" which define an offset, O, of a first image relative to the baseline, which define a thickness, T, of one or more images and which define a gap, G, of the first image relative to a second image using a composite array as follows;

O=X(F_-- size)+Y(F_-- size, Para_--

     1)+Z

T=X'"'"'(F_-- size)+Y'"'"'(F_-- size, Para_--

     2)+Z'"'"'

G=X"(F_-- size)+Y"(F_-- size, Para_--

     2)+Z"

selecting a function algorithm from a plurality of function algorithms in response to the user inputs, said function algorithms including a double underlining function,

drawing the text functions based upon the selected functional algorithm and

drawing the text characters.

23. The method of claim 22 wherein in said reading step said nine multipliers X, Y,Z;

X'"'"',Y'"'"',Z'"'"';

X",Y",Z" are user selected with 0,1 or other integer or fractional values.