OpenOffice 1.0 Draw Guide
Draw Guide:
A guide to using the Draw component of OpenOffice.org
Title: Draw Guide: A guide to using the Draw component of OpenOffice.org
Version: 1.0
First edition: October 2004
Contents
Overview....................................................................................................................................vi
Copyright and trademark information...................................................................................vi
Feedback................................................................................................................................vi
Acknowledgments................................................................................................................. vi
Modifications and updates.....................................................................................................vi
Introduction to Draw........................................................................................................................1
The Workplace............................................................................................................................ 2
The Toolbars............................................................................................................................... 3
The Function Bar....................................................................................................................3
The Object Bar........................................................................................................................4
The Main Toolbar...................................................................................................................4
The Color Bar......................................................................................................................... 5
The Option Bar....................................................................................................................... 6
The Rulers.............................................................................................................................. 6
The Status Bar........................................................................................................................ 7
Drawing Basic Shapes..................................................................................................................... 8
Drawing a segment of a straight line......................................................................................8
Drawing a rectangle..............................................................................................................11
Drawing a circle....................................................................................................................11
The Basic Drawing Shapes........................................................................................................12
The Texts.............................................................................................................................. 12
Rectangles and Squares........................................................................................................ 14
Circles, Ellipses and Arcs.....................................................................................................14
3D Objects............................................................................................................................ 16
Curves...................................................................................................................................17
Lines and Arrows..................................................................................................................18
Connectors............................................................................................................................19
Connector drawing basics................................................................................................19
Connector toolbar............................................................................................................ 21
Draw Guide i
Editing Gluepoints................................................................................................................21
Editing Objects Part I.....................................................................................................................24
Selection modes....................................................................................................................24
Changing the selection mode...........................................................................................25
Selecting Objects.................................................................................................................. 25
Direct selection................................................................................................................ 25
Selection by framing........................................................................................................25
Selecting hidden objects.................................................................................................. 26
Arranging objects.............................................................................................................26
Selecting several objects..................................................................................................26
Moving and Dynamically Adjusting the Size of an Object.................................................. 27
Dynamic movement of objects........................................................................................ 27
Dynamic size modification of objects..............................................................................27
Rotating an Object................................................................................................................28
Inclination........................................................................................................................ 28
Editing Object Points............................................................................................................29
Direct operation............................................................................................................... 29
How curves work.............................................................................................................30
The Bezier Curve Toolbar............................................................................................... 30
The three kinds of tangent............................................................................................... 30
Examples..........................................................................................................................31
Editing Objects Part II....................................................................................................................36
Changing Object Attributes.......................................................................................................36
Changing Attributes using the Context Menu...................................................................... 36
The Object Toolbar...............................................................................................................37
Line type.......................................................................................................................... 37
Choosing line attributes from the object toolbar............................................................. 39
Area Fill........................................................................................................................... 40
Choosing area fill patterns from the object toolbar......................................................... 45
The Text Object Edit Toolbar...............................................................................................45
Manual Editing of Object Size and Position........................................................................ 45
Draw Guide ii
Entering Position and Size data....................................................................................... 46
Size Data Entry................................................................................................................ 46
Angle of Rotation Data Entry.......................................................................................... 46
Inclination Data Entry......................................................................................................47
Using the Stylist........................................................................................................................ 48
Applying a Style................................................................................................................... 49
Changing a Style...................................................................................................................51
Creating a New Style............................................................................................................51
Special Transformations............................................................................................................51
Flip........................................................................................................................................52
3D Rotation Objects............................................................................................................. 53
Distort................................................................................................................................... 56
Dynamic Transparency Gradient Definition.........................................................................57
Dynamic Gradient Definition............................................................................................... 58
Managing 3D Objects and Bitmaps............................................................................................... 59
Managing 3D Objects................................................................................................................59
Rotating 3D objects.............................................................................................................. 59
3D effects..............................................................................................................................60
Buttons available in pages............................................................................................... 60
Favorites page..................................................................................................................60
Geometry Management page........................................................................................... 62
Shading page....................................................................................................................65
Illumination page............................................................................................................. 67
Texture Management page...............................................................................................68
Materials Management page............................................................................................71
Managing Bitmaps.................................................................................................................... 72
The Bitmap Image Toolbar...................................................................................................72
Bitmap Image Management Palette......................................................................................73
Combining Multiple Objects..........................................................................................................78
Grouping and Combining Objects.............................................................................................78
Grouping Functions.............................................................................................................. 78
Draw Guide iii
Group by common selection............................................................................................ 78
Maintaining groups and group dissociation.....................................................................78
Editing individual objects in a group...............................................................................79
Combination Functions........................................................................................................ 80
Shape Merge Functions........................................................................................................ 81
Merge...............................................................................................................................81
Subtract............................................................................................................................ 82
Intersect............................................................................................................................83
Putting the Shape Merge Functions to use.......................................................................84
Aids for Object Positioning.......................................................................................................85
Aligning Objects...................................................................................................................85
Distribution of Objects......................................................................................................... 87
Managing Object Arrangement............................................................................................ 89
Additional Tools............................................................................................................................ 92
Drawing Aid Tools....................................................................................................................92
Choosing Scale and Managing Zoom Values.......................................................................92
Zoom using the status bar................................................................................................ 92
Zoom Toolbar.................................................................................................................. 93
Managing Layers.................................................................................................................. 94
Placing Objects.....................................................................................................................95
The Magnetic Grid...........................................................................................................96
Capture Lines...................................................................................................................97
Dynamic insertion of a capture line.................................................................................97
Manual Insertion of a snap point or snap line..................................................................98
Snapping to object border................................................................................................ 98
Snapping to page..............................................................................................................99
Displaying guides.............................................................................................................99
Specific Functions...................................................................................................................100
Duplication......................................................................................................................... 100
Cross-Fading.......................................................................................................................101
Exchanging Objects with Other Programs......................................................................... 103
Draw Guide iv
Reminder Concerning Image Formats........................................................................... 103
The Web export function............................................................................................... 104
Draw Guide v
Overview
This document describes how to use Draw, the vector drawing component of OpenOffice.org
(OOo).
Copyright and trademark information
The contents of this Documentation are subject to the Public Documentation License,
Version 1.0 (the "License"); you may only use this Documentation if you comply with the
terms of this License. A copy of the License is available at:
http://www.openoffice.org/licenses/PDL.rtf
The Original Documentation is Draw Guide: A guide to using the Draw component of
OpenOffice.org. The Initial Writer(s) of the Original Documentation is/are Linda
Worthington © 2004. All Rights Reserved. (Initial Writer contact(s):lindaw65@earthlink.net.
The Initial Writer contact(s) is to report errors in the documentation. For questions regarding
how to use the software, subscribe to the Users Mail List and post your question there:
http://support.openoffice.org/index.html.)
All trademarks within this guide belong to legitimate owners.
Overview
Feedback
Please direct any comments or suggestions about this document to:
authors@user-faq.openoffice.org.
Acknowledgments
Thanks to Daniel Carrera, Carol Leather and Jean Hollis Weber for reviewing this chapter.
Original French document written by Michel Pinquier, translated to English by Alex
Thurgood and previous content revised by Jim Taylor
Modifications and updates
Version Date Description of Change
1.0 28 November 2004 First published version of complete Draw Guide
Draw Guide vi
Introduction to Draw
Draw is a vector graphics drawing tool. It offers a series of powerful tools that enable you to
quickly create all sorts of graphics.
It is perfectly integrated into the OpenOffice.org suite, and this makes exchanging graphics
with all modules of the suite very easy. For example, it is relatively simple to draw an image
and reuse it in the Writer and Impress modules. You can also work directly from within
Writer and Impress, using a subset of the functions and tools from the Draw module.
The Draw module functionality is very extensive and complete. Even though it was not
designed to rival high end graphics applications, it still possesses more functions than the
majority of drawing tools that are integrated into office productivity suites.
A few examples of drawing functions might whet your appetite: layer management, magnetic
grid point system, dimensions and measurement display, connectors for making organization
charts, 3D functions enabling small three-dimensional drawings to be created (with texture
and lighting effects), drawing and page style integration, and Bezier curves, just to name a
few.
This document only describes the functions associated with Draw. Some notions such as file
management or the way the OpenOffice.org environment works are mentioned only briefly as
these are covered elsewhere in the guide.
Draw Guide 1
Introduction to Draw
The Workplace
The main components of the Draw interface have the appearance shown in Figure 1.
Figure 1 - The Draw workplace
The major area located in the center of the screen is the one in which your drawings will be
made. It is surrounded by toolbars and information areas, the number and position of which
can vary according to the particular organization you have chosen for your workplace. The
small icons in each toolbar are called buttons. The picture above illustrates one of many
possibilities.
Draw Guide 2
Introduction to Draw
The Toolbars
The various Draw toolbars can be displayed or hidden according to your needs. To display
or hide the toolbars, simply click on any toolbar with the right mouse button1. A menu will
appear that lets you choose which of the four principal toolbars to display: the Function Bar,
the Main Toolbar, the Object Bar and the Option Bar. This menu also lets you select the
buttons that you wish to appear on the corresponding toolbar. All you have to do is select the
option Visible Buttons, and then select the desired buttons for that toolbar. Each toolbar has
a different list of buttons. Two additional toolbars, plus a toolbar customizing function, are
available from the Menu Bar by clicking View > Toolbars.
Many toolbar buttons are marked with a small arrow in the upper right corner of the button.
The arrow indicates that this button has additional functions. If you long-click (left-click and
hold), a submenu appears showing its additional functions.
You may wish to keep this submenu displayed on your screen, but in a different position than
the default location. You can make this submenu into a floating toolbar by detaching and
repositioning it. Click the submenu title bar and drag it to your desired screen location, then
release the mouse button. Most buttons marked with the small arrow can become floating
toolbars. The floating toolbar capability is common to all modules of the OpenOffice.org
suite.
The tools available in the various toolbars are explained in the following paragraphs.
The Function Bar
The Function Bar is displayed as follows:
It is the same for all of the modules of the OpenOffice.org suite and is not described in detail
here.
1 All references to mouse clicks are relative to the default right-handed mouse configuration. Left-handed users
can translate the mouse clicks to their left-handed mouse configuration.
Draw Guide 3
Introduction to Draw
The Object Bar
The Object Bar gives you a preview, and lets you modify the major characteristics of the
drawing objects that you are handling. The icons displayed will vary as a function of the
object that is selected. Sometimes more than one object bar is applicable for the selected
object; in this case a triangle is displayed at the right end – click on this triangle to toggle
through each of the available object bars.
In the example above, the available functions enable you to change the color of the line
drawn, the fill color, etc., of the object currently selected. If the selected object is text, the
toolbar will have the following appearance:
The Main Toolbar
This toolbar is the most important in the Draw module. It contains all the necessary
functions to enable drawing of various geometric and freehand shapes and for their
organization on the page.
The toolbar is shown here horizontally, but by default it is placed vertically on the left-hand
side of the workspace. As for other toolbars in OpenOffice.org, the buttons having a small
rightward pointing arrow enable you to gain access to further functionality. For example, if
you click on the icon representing a rectangle, the following window appears:
It is therefore possible to choose the type of rectangle you want to draw (for example, straight
or rounded, filled or empty, and so on). What's more, if you choose another option from the
icon with the arrow, this new option will be displayed as the default for all following
operations carried out using this button.
Draw Guide 4
Introduction to Draw
The Color Bar
To display the Color Bar, you need to use View > Toolbars > Color Bar. The toolbar then
appears at the bottom of the workspace.
This toolbar lets you rapidly choose the color of the objects in your drawing. The first box in
the panel corresponds to transparency (no color). The color palette that is shown by default
can be changed via the menu Format > Area as shown below. Choose the tab marked
Colors.
If you click on the Load Color List button that is circled, the file selector asks you to choose a
palette file (bearing the file extension .soc). Several palettes are supplied as standard with
OpenOffice.org. For example, web.soc is a color palette that is particularly adapted to
creating drawings that are going to appear in web pages, because the colors will be correctly
displayed on workstations with screens displaying at least 256 colors.
The color selection box also lets you individually change any color by modifying the
numerical values that you can enter in the fields provided to the right of the color palette.
You can also click on Edit to display a dialog box making the choice of colors easier.
You can use the color schemes known as CMYK (Cyan, Magenta, Yellow, Black), RGB
(Red, Green, Blue) or HSB (Hue, Saturation, Brightness).
Draw Guide 5
Introduction to Draw
The Option Bar
This toolbar lets you activate or deactivate various mechanisms that make drawing easier. As
opposed to the other toolbars, the Option Bar isn't displayed by default. In order to display it,
from the menu bar click View > Toolbars > Option Bar. When it is displayed, it can
generally be found at the bottom of the screen and looks like this:
The Rulers
On the upper and left-hand side of the workspace, you should see the rulers. These indicate
the sizes of the objects that have been drawn. The movement of the mouse in the workspace
shows up on the rulers to help you position objects precisely.
The page margins in the drawing area are also represented on the rulers. It is possible to
change the margins directly on the rulers by dragging them with the mouse.
You can also directly modify the units of measurement of the rulers by clicking on one of the
two rulers with the right mouse button:
Draw Guide 6
Introduction to Draw
As you can see from the illustration, the two rulers can have different units.
The rulers are also used to manage handle points and capture lines that make positioning
objects easier.
The Status Bar
The Status Bar is located at the bottom of the screen. We shall look more closely at the
middle part of this area, since it is particularly relevant to the Draw module. The three areas
of interest to us are as follows:
The sizes are given in the current unit (not to be confused with the ruler units). This unit can
be defined via Tools > Options > Draw > General. This dialog box also lets you change the
scale of the page. You can also change the scale by double-clicking on the number shown in
the status bar.
Draw Guide 7
Drawing Basic Shapes
This chapter will teach you the basic methods for drawing simple shapes. In the remainder of
this document, we'll use the term objects to designate the various shapes drawn (whether
they're simple lines, rectangles or more complicated shapes). This is common notation in
vector drawing software.
The following three sections illustrate how to draw three basic shapes: a straight line, a
rectangle and a circle. This illustration shows the buttons on the Main Toolbar that
correspond to the next three sections.
Drawing a segment of a straight line
Let's get started with drawing the simplest of shapes, a segment of a straight line. To begin,
click on the Lines and Arrows button on the Main Toolbar. The default line on the Main
Toolbar Lines and Arrows button is an arrow. To change to a line, long-click the Arrow
Style button to see a list of all the different arrow heads and tails available on line segments.
Draw Guide 8
Drawing Basic Shapes
To draw a straight line segment, click the straight line button and place the mouse cursor at
the point where you wish to start drawing.
Start Point
Drag the mouse while keeping the button pressed down. Let go of the mouse button when
you want to stop drawing the line. Two blue or green handle points located at each end of the
line will appear, showing that this is the currently selected object. The handle colors depend
on the default select mode (they will be green for simple selection and blue when in point
edit mode).
While drawing the segment, if you hold down the Shift key as well, you will force the line to
be drawn at angle which is a multiple of 45° with respect to the horizontal. The star in dots
shows the angles that are permitted for the straight line when the Shift key is pressed.
Draw Guide 9
Drawing Basic Shapes
If you replace the Shift key with the Control key [Ctrl], the constraining angle will be 15°.
You can set this angle in the Tools > Options > Drawing > Grid dialog box.
If you hold down the [Alt] key, the line will be drawn symmetrically with respect to the start
point. This technique lets you draw straight lines by starting from the middle of the line.
Note: You must press the left mouse button BEFORE you press the [Alt] key to
draw your line. Pressing the [Alt] key first will cause you to move the program
panel instead of drawing a line.
Start Point
The line you draw will have the default attributes (color, line type, and arrow style). You can
change the line attributes by activating (clicking) the line. Right-click and select the line, and
then make your attribute changes with the menu provided. You can reach this same dialog
box by clicking the line button on the object bar.
Draw Guide 10
Drawing Basic Shapes
Drawing a rectangle
Drawing rectangles is similar to drawing straight line segments, except that you use the
Rectangle button from the Main Toolbar.
The line drawn with the mouse shows the diagonal of the rectangle.
Start Point
If you hold the [Shift] key, you will get a square and the [Alt] key enables you to draw a
rectangle starting from its center.
Drawing a circle
To draw an ellipse or a circle, use the Ellipse button from the Main Toolbar.
The ellipse or circle is defined by a rectangle that is linked to the diagonal drawn with the
mouse. The diameter of the ellipse or circle corresponds to the longest side of the rectangle.
Start Point
Extended functions shown by long-clicking the Ellipse button include circles, ellipses, ellipse
and circle pies, segments, arcs, filled and non-filled closed shapes.
Draw Guide 11
Drawing Basic Shapes
There are three other ways to draw an ellipse or circle:
Shift-circle - forces the ellipse to be a circle.
Alt-circle - draws a symmetrical ellipse or circle from the center instead of dragging
corner to corner.
Note: You must press the left mouse button BEFORE you press the [Alt] key
to draw your circle. Pressing the [Alt] key first will cause you to move the
program panel instead of drawing a circle.
Ctrl-circle - snaps to grid lines.
The Basic Drawing Shapes
This section provides a complete overview of the various basic objects that you can draw in
the Draw module. These objects can then be edited, combined, and manipulated to create
more complex shapes. In the preceding pages, we have seen how to use some of these basic
drawing shapes.
All of the tool palettes described here can be displayed from the Main Toolbar.
The Texts
The text mode palette looks like this:
The Text tool lets you write text in the default font, color and size.
If you click on an empty space in the workspace, the text will be written at that spot. If you
click on an object, the text will be written in the center of the object and will remain within
the object, and the border of the object will become the text's frame.
When you've finished typing your text, click inside the frame. If you wish, you can drop to
the following line by pressing the [Enter] key. The text can be edited at all times by clicking
Draw Guide 12
Drawing Basic Shapes
Here is a text
the size of which has been
changed dynamically
Here is a text
the size of which has been
changed dynamically
on it.
When you type your text, you will notice that the upper ruler includes the usual paragraph
attributes: indents, first line, tab stops.
You can, as in Writer, change the style of all or part of the characters you enter. The Stylist
also works here, so you can create styles that you can use again in other text frames exactly as
you would with Writer.
The text frames can also be manipulated just like any other draw objects. You can assign
them fill colors, shadows etc. You can also rotate the frame and write the text at any angle.
The Fit Text To Frame tool lets you type in text, but you can also change the size of the
resulting text by manipulating the object's selection handles.
In the example above, the same text has been duplicated, but the selection rectangle has been
changed. In order to make the effect clearer, we have displayed the border of the rectangle.
The Callout tool in the palette is used for creating captions (callouts or figure labels). In fact
it's a tool that puts a frame around text and provides a connector (an articulated arrow). This
tool has been used many times for the captions in this manual.
Draw Guide 13
Rectangles and Squares
This toolbar palette has 8 tools:
These buttons let you draw filled or empty rectangles.
These buttons let you draw filled or empty squares.
Note: If you hold the [Shift] key down when drawing a rectangle, you will
create a square.
Drawing Basic Shapes
These buttons let you draw filled or empty rounded rectangles.
These buttons let you draw filled or empty rounded squares.
Circles, Ellipses and Arcs
Draw Guide 14
Drawing Basic Shapes
These two tools let you draw empty or filled ellipses.
These two buttons let you draw empty or filled circles.
Note: Drawing an ellipse while holding down the [Shift] key at the same time
also lets you draw a circle.
These two buttons let you draw an elliptical sector. Here's the way to do this:
First draw the ellipse. Then indicate on the ellipse with the mouse the
position of the first segment and then repeat this for the second segment. You
will note the particular shape of the mouse cursor when drawing the elliptical
sector.
These two tools let you draw circular sectors. The way to draw them is
similar to that for elliptical sectors.
You can also draw elliptical segments. An elliptical segment is an ellipse that
has been cut into two along a straight line segment. The idea is simple: first
draw the ellipse, then place the first and second segment points. You will
note the particular shape of the mouse cursor.
These two buttons let you draw circular segments.
This button lets you draw an elliptical arc. This works in a similar way to
elliptical sectors, except that the resulting figure isn't closed.
Here again, note the shape of the mouse cursor. Just like with sectors and
segments, arcs can be changed at any time.
The last tool in the ellipse palette lets you draw circular arcs.
Draw Guide 15
Drawing Basic Shapes
3D Objects
Draw lets you draw three dimensional objects. The 3D object palette offers a choice of 8
basic primitives that can be used to create more complex objects through merging or
combination.
The creation of a 3D object always works in the same way: click on the associated button and
then draw a rectangle on the work area corresponding to the foreground area of the object to
be drawn. A cube silhouette (boundary box) that will contain the future object is displayed.
This tool creates a cube. More generally, this tool can be used to create 3D
parallelepipeds. If you want to draw a cube, press down the Ctrl key [Ctrl] while
drawing your shape.
This tool lets you draw a sphere. In reality, the object drawn by default with this
tool is an ellipsoid. To obtain a sphere, just press the Ctrl key while drawing.
This tool lets you draw a cylinder.
This tool lets you draw a cone.
Draw Guide 16
This tool draws a pyramid.
This one lets you draw a torus (a ring).
And this one a shell or cup shape; that is, a hollowed out hemisphere.
This button lets you draw a complete hemisphere; that is, filled.
Curves
The curve palette offers 8 tools for drawing non-linear profiles.
Drawing Basic Shapes
These icons represent the basic tools for drawing curves. The resulting curve
can be manipulated by Bezier curves as we have seen previously. The principle
behind the tools is as follows:
Click on the drawing area to position the first point. Keeping the mouse button
pressed down, move the mouse to draw the tangent to the curve that passes
through the start point. Let go of the mouse button and move the mouse to
draw the curve.
To finish the shape, double-click on the left mouse button. This operation can
be repeated immediately starting from the newly created end point.
The shape you create will be filled or empty depending on the button you
pressed. Where the shape is filled, a segment will be drawn from the start point
to the end point. The object that results can be manipulated like any other, but
you can also play with the tangents of the object in edit points mode.
Draw Guide 17
Drawing Basic Shapes
This tool lets you create polygons. A polygon is a series of straight segments.
The way it works is fairly simple: just click on the workspace to set the first
point, move the mouse to the next position where you want to set a second
point and click, and a segment will be drawn between the two. The polygon is
drawn by repeating this procedure until all of the points have been drawn.
When you have finished, double-click on the mouse to release the polygon
from edit mode. If you chose to create a closed shape, a segment will link the
start point to the end of the last segment that you have drawn.
This tool is similar to the previous one, but various segments will all have
angles that are a multiple of 45° in relation to a horizontal axis. The shape
drawn will be open or filled depending on the button chosen.
When you click on these buttons, you can draw a freehand line. The principle
behind this is as follows: move the mouse and at the same time hold down the
left mouse button. The movement of the mouse as shown on screen will
become the curve that is drawn. OpenOffice.org actually draws a curve
composed of several control points. You can check this by switching into edit
points mode. Here again, depending on the icon chosen, you can draw a closed
or open freehand curve.
Lines and Arrows
This button corresponds to the simplest of drawing shapes, a straight line
segment.
The line drawn will begin or end with an arrow.
The two ends of the segment are made up of a circle at one end and an arrow at
the other.
Draw Guide 18
Drawing Basic Shapes
The two ends of the segment will be made up of a square at one end and an
arrow at the other.
The segments drawn will have an angle that is a multiple of 45° to the
horizontal axis. You can get the same effect by pressing the Ctrl key when you
draw your line.
This button lets you display the dimensions of the object being drawn. A
dimension object includes a double-headed arrow, two segments that indicate
the extremities of the measured zone, and a measure in the current unit of
measure.
If a dimensioned object is resized, the corresponding change in size is
recalculated automatically and displayed. If you group an object with
dimensions, any change in the size of the object will be reflected in the sizes
reported in the dimensions. In such a case, we call them associated dimensions.
The dimensions can be configured using a dialog box that is available from the
local dimensions menu.
The dimensions are shown as default in the unit of measurement corresponding
to that of the sheet. You can change the units using the menu Format >
Dimensions.
The Dimensioning options dialog lets you set up the positions of the elements
that make up the dimension. You can enter line thicknesses, distance and
overhang to the guide marks, text position and also change the unit of
measurement displayed (or even not to display the unit of measurement).
You can also set the line type and text attributes using the classical available
functions already discussed.
With this tool; you can draw a segment bearing arrows at each end.
Connectors
Connectors are a particular type of curve, the ends of which are attached to gluepoints on
other objects, and which stick to these gluepoints when the associated object is moved. They
are particularly useful for making organizational charts. You can reorganize the blocks of
your chart while keeping the links between them.
OpenOffice.org Draw has a whole panoply of functions that are really quite remarkable as far
as connectors are concerned. Finding the various functions is not at first sight very easy, but
we shall look at the ways of making them visible.
Connector drawing basics
The principle behind drawing a connector is as follows: all objects have gluepoints associated
with them. The gluepoints are invisible by default. The connectors you can draw position
themselves automatically onto the gluepoints of the object. Draw sets the default number of
gluepoints for an object to 4. We will see later how you can change the position of the
gluepoints and add new ones.
Draw Guide 19
Drawing Basic Shapes
The default gluepoints are located at the centers of the lines forming the edges of the
selection rectangle around an object. As you can see on the following figure, this means that
the gluepoints are not necessarily located on the contour of the object:
When you move one of the ends of a connector over an object, its gluepoints become visible.
You can drop the end of the connector onto one of the gluepoints. Afterwards, whenever
either the connector or the object are moved, the end of the connector will remain attached to
the object gluepoint.
You can also drop the end of the connector onto the object. In this case, when you move the
object or the connector, OpenOffice.org will automatically choose the best gluepoint in order
to avoid a too lengthy connector:
Wherever possible, OpenOffice.org will attempt to avoid drawing the connector over the top
of the object.
You can always break the link between a connector and an object by moving the end of the
connector away from the gluepoint to which it was attached.
As with all objects, control points are associated with connectors in order to facilitate their
drawing. The main control point is located in the middle of the connector and lets you decide
on the size of each segment either side of the control point.
Draw Guide 20
Drawing Basic Shapes
Connector toolbar
The connector toolbar contains a large number of buttons.
As shown by the figure above, the connectors can be grouped into four categories. Each
category is subdivided into 7 connector types depending on the arrowhead for each end.
The buttons in this row let you draw traditional connectors like the ones you have
seen on the previous pages.
These connectors are made up of a line segment and two smaller segments at the
horizontal or vertical ends.
These connectors are comprised of a simple straight line.
These connectors are based on Bezier curves.
Editing Gluepoints
Gluepoint management is handled by a special toolbar. This toolbar isn't visible by default.
To display it, press the button in the option toolbar.
The gluepoint toolbar looks like this:
Here's a brief description of the way these buttons work:
Draw Guide 21
Drawing Basic Shapes
This button lets you insert a new gluepoint. If the object is filled, the point can be
inserted anywhere within the object and not only on its contour. After you've
chosen this tool, click on the object to add the gluepoints.
The gluepoints remain visible for as long as the button is pressed down. They are
displayed as little blue crosses and the gluepoint that is currently selected appears
highlighted. You can move the gluepoints with the mouse and delete them with the
[Del] key.
These four buttons let you choose the directions of movement that are allowed
around the junction of a connector gluepoint. You can also select several of these
buttons for any given gluepoint. Here's an example of their use:
Here's a very simple drawing to which a gluepoint has been added.
By default, connector lines can attach themselves to this point from any direction.
Now click on the . The effect of this is to force any connector placed on the
gluepoint to come in from the left as shown in the following drawing:
Draw Guide 22
Loading...