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Convert to bitmap

All drawing objects are vector graphics. Use the command Convert > To Bitmap

from the context menu to convert a vector graphic to a raster graphic. Draw creates

the raster graphic in PNG format with a color depth of 24 bits. Unfortunately any

transparency effects which were created in the vector graphic are lost in this

conversion, although the PNG format used in Draw does support transparency. Only

if you use the eyedropper tool to set transparency will an Alpha channel also be

produced.

To determine the height and width of the converted graphic (number of pixels), Draw

considers the dpi setting of the operating system for the screen and the percentage

scaling factor set under Tools > Options > OpenOffice.org > View in the section

User Interface.

Example:

Width of vector graphic: 1.5 inch

Monitor setting of operating system: 96 dpi ( = 96 dots per inch)

Scaling 130 %

Calculation: 1.5 inch x 96 dpi *130% = 187 pixels

The actual number of pixels will vary somewhat from this value due to rounding.

When the format permits, Draw uses a dpi value (in this case 125 dpi) which permits

the calculation to be reversed and the picture with this pixel value reproduced with

the correct width of 1.5 inch.

Print options with raster graphics

If you have only a black and white printer or are experiencing problems with

printing, you should check the following settings.

You can set up printing so that all text and all graphics are printed in grayscale or

black and white. The general settings are in Tools > Options > OpenOffice.org

Draw > Print in the section Quality (see Figure 126). To set these for the current

document only, use Options in the Print dialog (File > Print). With both Black/white

printing and Grayscale printing, no background is printed.

Figure 126: Options - OpenOffice.org Draw - Print

Other options are in Tools > Options > OpenOffice.org > Print (see Figure 127).

They relate to page options (scaling) and other printing variables. They affect the size

of the print file and the time taken to print the document. With most modern systems

you can simply accept the defaults. As different operating systems and printers have

their own requirements, you need to tailor the settings to your particular site

conditions. Refer to the Help file for more information.

Chapter 6 Editing Pictures (Raster Graphics) 109

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OpenOffice.org OpenOffice - 3.3 Guía de usuario Pagina 109