CN1553377A - System and method for scientific formula visual edit - Google Patents

Abstract

The system consists of input boundary surface module providing user boundary surface of standard formula element and input formula window to receive formula inputted by user and to send information to data layer module, data layer module receiving formula transmitted from boundary surface module and toconvert it to be corresponding XML mark stored in file as well as to convert XML mark in file to be object form when command of formula composing display is received, and composing display module receiving data transmitted from data layer module and to carry out composing display.

Description

The system and method for science formula visual edit

Technical field

The present invention relates to the science formula, particularly the visual edit system and method for science formula.

Background technology

At present, the most frequently used equation editing device is the Microsoft EquationEditor Microsoft equation editing device that adopts in the office software.This editing machine makes things convenient for user's typing formula, but exists following deficiency.

(1) is incorporated into as an OLE (object linking and embedding) embedded object in other application programs of supporting the OLE standard at the good formula of this editing machine inediting, embed host's document in the OLE mode, convergent-divergent arbitrarily, bring the formula form disunity of entire chapter document, influenced the format of entire chapter document.And this formula of utilization OLE mode does not have professional platform independence.

(2) can only import some fixing mathematic signs in this editing machine, not have extendability, not only comprise numerical expression, also need the formula of aspects such as chemistry, physics, need further to enlarge the range of application of equation editing device and the user need import.

Summary of the invention

Fundamental purpose of the present invention is to provide a kind of formula can be cross-platform and the visualizing editing method and the system of science formula convergent-divergent arbitrarily.

Secondary objective of the present invention is to provide the visualizing editing method and the system of the science formula of science formula automatic typesetting.

The invention provides a kind of formula visual edit system, this system comprises: the inputting interface module, be used to provide the user interface of the formula element and the input formula window of standard, and receive from the formula of user's input, and described information is passed to data layer module; Data layer module is used to receive the formula that transmits from the inputting interface module and converts thereof into corresponding XML tag storage hereof, when receiving formula composing idsplay order, storage XML tag is hereof converted to the form of corresponding object class; The composing display module is used to receive the data that send from the data layer module demonstration of setting type.

Also comprise the class creation module in the described inputting interface module, be used to create the formula element class of described formula element and the window class that the input formula is handled.

Described formula element comprises mathematical formulae symbol, physics electrical equipment symbol, chemical symbol, chemical structural formula, chemical equation.

A kind of formula visualizing editing method, this method comprises: (one) provides the user interface of the formula element and the input formula window of standard, receives from the formula of peripheral hardware input, and described information is passed to data layer module; (2) the data Layer mould converts the formula of described input to corresponding XML tag storage hereof, when receiving formula composing idsplay order, storage XML tag is hereof converted to the form of corresponding object class; (3) receive the data that send from the data layer module demonstration of setting type.

Step (one) also comprises the window class of creating formula element class and the input formula being handled before.

Step (three) comprises composition step,

(1), calculates the width of described single entry unit, highly when the new single entry unit of input;

(2) wide high size, the position of the minor at the described single entry of expansion unit place;

(3) according to the variation of minor, search other each adjacent formulas of all these minors, adjust the position of adjacent formula;

(4) size, the position of father's formula of the described minor of adjustment;

(5) described father's formula is imported as new, repeating step (1) is the formula body to (4) up to described father's formula.

Described step (three) comprises step display,

(1) location shows this formula character, symbol;

(2) search each subformula's parts of this this formula, enter minor;

(3) repeating step (1)-(2) are not till having minor to enter.

Develop cross-platform formula assembly, not only can run in the environment of developing instrument own, and can run in the developing instrument environment of supporting assembly technology and on the network.Specific surface more has superiority to the assembly of single developing instrument exploitation.Each formula input window is a formula component object, and sets up the organizational form of the data of these objects in system, makes formula can do as a whole the setting, can carry out unified attribute to formula and set.For example: the unified font size of setting.Thereby overcome the shortcoming of formula as ole object embedding host document.

Description of drawings

Fig. 1 is the composition frame chart of the visual edit system of science formula of the present invention.

Embodiment

The visual edit system 5 of science formula comprises inputting interface module 2 at least, data layer module 3 and composing display module 1.

Inputting interface module 2, described inputting interface module 2 provide the user interface of the science formula element and the input science formula window of standard at least, receive the information of editing from the visual edit system 5 to this science formula of peripheral hardwares such as keyboard, mouse input;

Data layer module 3, this data layer module 3 receives the formula that sends from inputting interface module 2 and formats and serializing, when receiving the composing display command of this science formula, carry out the XML format conversion of the science formula of storage in the file 4 is become the form of corresponding object class, i.e. the pre-service of format conversion, the demonstration of setting type; The input and output of the conversion of these data layer module 3 main realization data layouts, tissue, buffer memory, file 4 etc.

Composing display layer module 1, this composing display module 1 are used to receive the data that send from data layer module 3 demonstration of setting type.

Introduce the method for the visual edit of this science formula in detail, concrete steps are as follows:

One, in science formula inputting interface module 2, creates the user interface of the element and the input science formula window of composition science formula, receive the information of editor's science formula of peripheral hardware inputs such as keyboard, mouse.

This science formula element comprises numerical expression symbol, physics electrical equipment symbol, chemical symbol, chemical structural formula, chemical equation.Those elements are standard in the formula, general and more common.As in the mathematics formula as fraction, radical, go up subscript formula, summation formula, quadrature formula, integration type etc., common chemical reaction equation in the chemistry, symbol commonly used in physics and the chemistry.The user can be according to the above-mentioned formula element that provides, the input formula.A formula comprises some independently single entries; Single entry comprises symbol string and minor, and the minimum unit of forming single entry is a single entry unit, and single entry unit can the is-symbol string, the single entry object in inseparable minor.As

$y=\mathrm{abc}+5/b+\sqrt[3]{\mathrm{ab}\sqrt[2]{4\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="A0313839700111.png"\; state="\{\{state\}\}">b</figure-callout>}}}$

y＝a+b

This formula comprises two independent single entries, and 5/b is a minor, comprises branch subobject 5 in the single entry object of this minor, denominator object b, and In

Two single entry objects in the minor, the truth of a matter is to liking 4b, and the radical exponent object is 2.

Specifically, as adopting VC++, object oriented languages such as VB are write.Utilize component technology, The Component Object Model (COM) is a binary system standard of sharing assembly between a kind of code, component object is compiled into forms such as dynamic link or executable file, they can move in the identical process space with the application program of calling, utilize Distributed COM, this component object may operate on the different machines.So, at first in the class creation module of science formula inputting interface module, create various base class and subclass, the base class that comprises has mathematics element class: mainly be the element that has defined about concrete logical meaning in the mathematical formulae; The chemical component class defines in the relevant chemistry element of concrete logical meaning; The physical component class is to have defined common electrical symbol, in mathematics element class, create its subordinate's subclass such as fraction, radical, on making type at the bottom of the subscript formula, summation formula, quadrature formula, integration type, top, mark placed arrow type, brace formula, stacked, matrix form, equation, set operation formula, logical operation formula, and the subclass of creating its subordinate in the chemical component class is an atomic diagram, chain structure formula, ring texture formula, chemical equation, chemical bond symbol, on line symbol, reaction symbol.Its data structure of definition and its method in the class, subclass has been inherited the feature (data structure and method) of base class.Mathematic sign, chemical symbol adopt international standards MathML and CML; Chemical experiment vessel and physics electrical equipment are the SVG (but vector graphics standard of retraction) that adopts international standards.

Except the formula element of above-mentioned disclosed user according to the composition science formula that provides in the science formula inputting interface module, system also provides User Defined science formula element.System provides the interface of User Defined science formula element.The user can be according to work characteristics separately, create a new storehouse, perhaps replenish in original storehouse, as having comprised multiple common matrix elements such as 2 rank, 3 rank, 4 rank in " matrix " storehouse, the user can add some personal matrixes in this matrix storehouse.

Two, data layer module 3 receives from the formula data of inputting interface module 2 transmission and formats and serializing, specifically, converts the formula object of importing to corresponding XML tag, is sent to file 4 and preserves.By this data layer module, all formula data can be preserved or output with the form of a kind of international standard XML, any reciever of this standard that is appreciated that can be explained these formula data that receive, and it is more unobstructed that data are exchanged, and has good professional platform independence.

When receiving the composing display command, convert the XML tag of science formula of storage in the file 4 to the data mode of corresponding object class, the pre-treatment step of setting type and showing.

Three, the composing display module receives the data that send from the data layer module demonstration of setting type.

During composing demonstration science formula, defined the font size of object in such in the class of the science formula of creating, as the footmark class, the subscript object is n-1 number, this base object is that n number and subscript object are n-1 etc., is setting type when showing like this, and each single entry unit of formula will adapt to font size automatically according to default font size, and native system offers the some font sizes of selecting for users of object, and this function can be applied to all formula in this host's document.Revise like this and show that type-setting mode can be accurate to the appointment font size, be convenient to the unification of form in host's document, and the present invention is because the data processing method of the built-in object of employing system, so all formula can be used as an integral body and set in host's document, make and formula is carried out unified attribute set.

(1) when single entry unit of input, during as a character or symbol or formula element, composition step is as follows particularly.

(a) calculate the width of the single entry unit of this input, highly;

(b) expand width, height dimension, the position of the minor at this single entry unit place;

(c) according to the variation of minor, search other each adjacent formulas of this minor, adjust the position of adjacent formula, reach automatic alignment function,

(d) adjust the higher level of this minor, i.e. the size of father's formula, position.

(e) father's formula is imported as new, repeating step (a) is to (d), till the window of father's formula as whole formula input.

(2) according to composing update displayed flow process as a result, from outside to inside, the uncle calls minor one by one to son and shows:

(a) location shows this formula character, symbol;

(b) search each minor parts of all Ben Shinei, enter minor

(c) repeating step (b) and step (c) are up to there not being minor to enter;

(d) if necessary, show current cursor

As $y=\mathrm{abc}+\sqrt[3]{\mathrm{ab}\sqrt[2]{4\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="A0313839700111.png"\; state="\{\{state\}\}">b</figure-callout>}}},$ In input 2 o'clock, according to given standard font size, determine to go up target width and height, expand to that this is modular In other the width and the height of single entry unit, and adjust The size of this father's formula and position are until reaching whole formula $y=\mathrm{abc}+\sqrt[3]{\mathrm{ab}\sqrt[2]{4\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="A0313839700111.png"\; state="\{\{state\}\}">b</figure-callout>}}},$ And show according to above-mentioned steps.This composing display module can carry out automatic typesetting according to each modular font, font size and word space of determining of this formula and show.

Each formula input window is a formula component object, and in system the data organization mode of built-in those objects, can do as a whole the setting, set so can carry out unified attribute formula.Thereby overcome the shortcoming of formula as ole object embedding host document.

Claims (7)

1, a kind of formula visual edit system is characterized in that this system comprises:

The inputting interface module, the user interface that is used to provide the formula element of standard and imports the formula window receives from the formula of peripheral hardware input, and described information is passed to data layer module;

Data layer module is used to receive the formula that transmits from the inputting interface module and converts thereof into corresponding XML tag storage hereof, when receiving formula composing idsplay order, storage XML tag is hereof converted to the form of corresponding object class;

The composing display module is used to receive the data that send from the data layer module demonstration of setting type.

2, formula visual edit as claimed in claim 1 system is characterized in that, also comprises the class creation module in the described inputting interface module, is used to create the formula element class of described formula element and the window class that the input formula is handled.

3, science formula visual edit as claimed in claim 1 system is characterized in that described formula element comprises mathematical formulae symbol, physics electrical equipment symbol, chemical symbol, chemical structural formula, chemical equation.

4, a kind of formula visualizing editing method is characterized in that, this method comprises:

(1) provides the user interface of the formula element and the input formula window of standard, receive the formula of user's input, and described information is passed to data layer module;

(2) the data Layer mould converts the formula of described input to corresponding XML tag storage hereof, when receiving formula composing idsplay order, storage XML tag is hereof converted to the form of corresponding object class;

(3) receive the data that send from the data layer module demonstration of setting type.

5, formula visualizing editing method as claimed in claim 4 is characterized in that, step (1) also comprises the window class of creating formula element class and the input formula being handled before.

6, science formula visualizing editing method as claimed in claim 4 is characterized in that, step (three) comprises composition step,

(1), calculates the width of described single entry unit, highly when the new single entry unit of input;

(2) wide high size, the position of the minor at the described single entry of expansion unit place;

(3) according to the variation of minor, search other each adjacent formulas of all these minors, adjust the position of adjacent formula;

(4) size, the position of father's formula of the described minor of adjustment;

(5) described father's formula is imported as new, repeating step (1) is the formula body to (4) up to described father's formula.

7, science formula visualizing editing method as claimed in claim 4 is characterized in that, described step (three) comprises step display,

(1) location shows this formula character, symbol;

(2) search each subformula's parts of this this formula, enter minor;

(3) repeating step (1)-(2) are not till having minor to enter.

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