The Diagram object provides the properties Wall and Floor: The specified objects support the com.sun.star.chart.ChartArea service, which provides the usual fill and line properties (com.sun.star.drawing.FillProperties and com.sun.star.drawing.LineProperties services, refer to #Drawings and Presentations). One of these is used to query the value of the property and the other is issued to set it (get and set methods). The following is an example of a search and replace process: This example uses the first page of the document to create a ReplaceDescriptor and then applies this to all pages in a loop. The computeFunction expects a constant as the parameter that describes the mathematical function that you want to use. An object in LibreOffice Basic provides a range of properties and methods which can be called by means of the object. Building on this background, the following chapters will show how the API can be used to make LibreOffice do what you want it to do. LibreOffice then changes the way in which all text portions which use this template are depicted. Some of the properties that this service provides are: The following example creates a rectangle with a solid border (LineStyle = SOLID) that is 5 millimeters thick (LineWidth) and 50 percent transparent. To get the most out of this book, you should be familiar with other programming languages. It may not be available in all types of documents. Anyone who is already familiar with LibreOffice Basic programming can find additional information in the Developer's Guide on LibreOffice Basic and LibreOffice programming. The following code is an example of an error handling procedure: This procedure begins with the definition of an error handler, followed by the actual program code. The com.sun.star.awt.UnoControlEdit service forms the basis for text fields. The following properties are provided for 3D charts at the Diagram object: The following example creates a 3D area chart. Programmers who want to work directly with Java or C++ rather than LibreOffice Basic should consult the LibreOffice Developer's . To do this, you first create a standard LibreOffice Writer or LibreOffice Calc form and then link the fields to a database. Here, the methods are called directly by means of the relevant object. No programming knowledge is needed to use the corresponding functions. The Form Functions Toolbar is used for editing forms. This is a transfer channel which permits direct communication with the database. As a result, it returns a data field containing the names. If you are familiar with an interface, then you can transfer your knowledge from one service to another. The Asc and Chr functions allow the Unicode value belonging to a character to be established and/or the corresponding character to be found for a Unicode value. 257x267px The following example searches through all tables of a text document and applies the right-align format to all cells with numerical values by means of the corresponding paragraph property. The declaration can only be made using the supplement As Boolean. VBA: Different terminology for spreadsheets and their content is used in VBA and LibreOffice Basic. Again an auxiliary structure, in this case com.sun.star.drawing.Hatch, is used to define the appearance of hatches. The code used in this example creates a Doc object that references the current presentation document and establishes the associated presentation object. RectangleShape.String = "This is a test" A dialog editor is provided for creating dialogs, and this can be found in the LibreOffice Basic development environment. If a document has one page and this is called Slide 1, then the following examples are identical. An example of how to use the definition, and how to reference the fields within an instance, appears in the section on WithEnd With. These are: The code for saving a document can be extended by these options so that the document is only saved if the object has actually been modified and the file name is only queried if it is actually needed: The example first checks whether the relevant document has been modified since it was last saved. When administering strings, LibreOffice Basic uses the set of Unicode characters. However, this may have fatal consequences. The complete name of a service consists of the com.sun.star expression, which specifies that it is a LibreOffice service, followed by the module name, such as frame, and finally the actual service name, such as Desktop. By using ma units, LibreOffice ensures that a dialog looks the same on different systems under different system settings. The #API often uses pre-defined structs, but these are UNO structs, a highly-specialized kind of struct. The parameter provides the option of adding additional buttons, defining the pre-assigned button, and adding an information symbol. The text field is then inserted in the document using the associated text object of the left-hand footer line. FileNo is the handle created by the FreeFile function. Here are a few examples: The following example shows how all empty lines in a text document can be removed with the help of the regular expression ^$: So far, this chapter has only dealt with text paragraphs and their portions. However, unlike the old Application object, StarDesktop is primarily responsible for opening new documents. They are listed in the source text without a comma separating the thousand figure: The numbers can be preceded by both a plus (+) or minus (-) sign (with or without a space in between): When you type a decimal number, use a period (.) For example, the TextCursor in the following example. This code inserts a drawing element in a page and then adds text to the top left corner of the drawing object using the TextVerticalAdjust and TextHorizontalAdjust properties. The properties of this service are: The following example creates a rectangle with a shadow that is vertically and horizontally offset from the rectangle by 2 millimeters. It could be for example, A247. The example shows a dialog that contains a label and a list box. Some level of basic familiarity with Basic, Python, Java or C++ is the precondition to start learning about UNO. You can add custom dialog windows and forms to LibreOffice documents. The Execute method of the dialog returns the value 0, which is the same as when you click Cancel. You can also use the following style to declare an integer type variable: The Dim instruction can record several variable declarations: If you want to assign the variables to a permanent type, you must make separate assignments for each variable: If you do not declare the type for a variable, LibreOffice Basic assigns the variable a variant type. To open a file so that it can be written as a text file, the Open call is: Filename is a string containing the name of the file. The com.sun.star.style.CharacterProperties service does not provide any interfaces, but instead offers a range of properties through which character properties can be defined and called. Originally, single variables were used to reduce the computing time required for the more precise double variables. Since XML is based on standard text files, the resultant files are usually very large. The shadow is rendered in dark gray with 50 percent transparency. The third section moves beyond work with texts. The starting point for establishing the text fields present is the TextFields list of the document object. This service provides the following properties: When you format sheets, you can define whether page elements are visible. XIndexAccess provides the methods for accessing individual objects. This chapter presents the central interfaces and services of text documents. Chapter 1. The following example steps through all the paragraphs of a text: The example first creates a ParagraphEnumeration auxiliary object. To check if the contents of a cell contains a number or a string, use the Type property: The Cell.Type property returns a value for the com.sun.star.table.CellContentType enumeration which identifies the contents type of a cell. When saving date values, LibreOffice Basic uses an internal format that permits comparisons and mathematical operations on date and time values. They can, however, only be used in tables that do not contain merged table cells. If you do have such collision, Basic may produce strange runtime error messages, or your Sub may not work. The following example uses a recursive function to calculate the factorial of the numbers 42, -42, and 3.14: The example returns the factorial of the number 42 by recursively calling the CalculateFactorial function until it reaches the base condition of 0! A space in a local file name therefore, for example, becomes a %20 in the URL. The com.sun.star.text.TextTableRow service provides the following properties: Columns are accessed in the same way as rows, using the getByIndex, getCount, insertByIndex, and removeByIndex methods on the Column object, which is reached through getColumns. ThisComponent returns the last previously active document. If nothing is assigned, the function returns a zero value (number 0 for numerical values and a blank for strings). This rule ensures that source texts can be transferred from one country to another without conversion. 257x267pxThe LibreOffice Basic development environment. The Object type designation should be used to declare an object variable: The call declares an object variable named Obj. Note: LibreOffice recognizes a whole range of services that support this service. VBA: Unlike VBA, where you can only dimension dynamic arrays by using Dim MyArray(), LibreOffice Basic lets you change both static and dynamic arrays using ReDim. Note: You can also move data from the database window into text documents using the drag-and-drop function. Since LibreOffice Basic is a procedural programming language, several linguistic constructs have had to be added to it which enable the use of UNO. Example declarations of double variables: Currency variables differ from the other variable types by the way they handle values. Forms, on the other hand, are displayed directly in the document, just like drawing elements. Then it iterates through the entire text, sentence by sentence, and highlights each of the first words and formats this in bold. The structure for hatches has the following properties: The following example demonstrates the use of a hatch structure: This code creates a simple hatch structure (HatchStyle = SINGLE) whose lines are rotated 45 degrees (Angle). All characters that follow an apostrophe are treated as comments: Markers can only contain Latin letters, numbers, and underscores (_). Here are the associated properties of the com.sun.star.util.SearchDescriptor service: Once the SearchDescriptor has been prepared as requested, it can be applied to the text document. If a new page is inserted in a drawing document of several pages, all subsequent pages which have not been renamed will automatically see their default name change, e.g. Among the most useful are: LibreOffice Basic understands common mathematical, logical, and comparison operators. In other words, the methods are assigned (as combinations) to the service in interfaces. If you assign a floating point number to a long integer variable, the number is rounded up or down to the next whole number. LibreOffice automatically ensures that the relevant data is retrieved from the database, and that any changes made are written back to the database. As a result, LibreOffice Basic enables the creation of a variable through simple usage and without an explicit declaration. Depending on the system and configuration, various types of data are saved here. The user interface provides a corresponding option for creating data sources in the Extras menu. Regardless of the type of event, all objects provide access to the relevant control element and its model. Any modifications made to the data within the spreadsheet will also be reflected in the assigned chart. The following example shows how to create a chart assigned to some cell ranges within a spreadsheet document: Although the code used in the example may appear to be complex, the central processes are limited to three lines. As the name suggests, LibreOffice Basic is a programming language from the Basic family. Issue 31001 Issue 54049 Issue 91121 Issue 107277 are still not corrected. To make your code easier to read, you should assign meaningful names to these procedures. This section, however, provides little information about the functions specified, but instead concentrates on the programming interface from SDBC, which allows for automated database querying and therefore permits a much greater range of applications to be used. The following example traverses the contents of a text document in a loop and uses a message in each instance to inform the user whether the object in question is a paragraph or table. An integer variable can take up to two bytes of memory. All occurrences of the name, The character $ marks a paragraph end. Buy a printed copy. You do that by using the name of the object as a qualifier. Write it before the inner name, and separate it by a period: Since containers may hold other containers, you may need more than one qualifier. Similarly, if you set this value to zero for a control element, the element is displayed on all the tab pages in a dialog. Note: The real API call is: Sheet.getColumns.getByIndex(1). Apache OpenOffice offers a complete user interface for developing programs in Basic. This detail may be of interest in particular to Java- or C++ programmers, since in these languages, the interface is needed to request a method. Each of these documents may contain several spreadsheets. The basic functionality for the individual document objects is provided by the com.sun.star.document.OfficeDocument service. SetModuleB is triggered from one toolbar button and ShowVarB is triggered from another toolbar button, then ShowVarB will display a C value of 0 since module variables are reset after each macro completion. It passes through a complete document and formats the first word of every sentence in bold type. To define the cell range that you want to insert, use the com.sun.star.table.CellRangeAddress structure. . Use UBound() to check if the returned array is empty. The control codes are defined in the com.sun.star.text.ControlCharacter group of constants. Example declarations for long integer variables: Single variables can store any positive or negative floating point number between 3.402823 x 1038 and 1.401298 x 10-45. The structure is further complicated by tables. It returns the document object on which the macro is run. The name StarDesktop was, however, retained for the frame object of LibreOffice because it clearly indicates that this is a basic object for the entire application. The text frame is therefore inserted directly in the text flow and behaves like a character. In addition to context-independent services, there are also context-dependent services whose objects are only useful when used in conjunction with another object. Values for the Array fields can be stored like this: Accessing values in an array works like this: And example containing all steps that show real array usage: A variable in LibreOffice Basic has a limited life span and a limited scope from which it can be read and used in other program fragments.
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