Drawing and Graphics

Using the Drawing Interface

Importing Macintosh PICT Resources

13

The following information applies to the Mac OS version of NTK; the Windows
version differs. See the Newton Toolkit User's Guide for details.

A Macintosh PICT resource can be imported into the Newton in two ways: as a
bitmap or as a picture object. A Macintosh PICT resource is stored much more
compactly on the Newton as a picture object; however, it may be slower to draw
than a bitmap. The same Macintosh PICT resource may occupy much more space
when imported as a bitmap, but may draw significantly faster. The method you
should use depends on whether you want to optimize for space or speed.

A Macintosh PICT resource is imported as a bitmap by using the slot editor for the

icon

slot (an editor of the picture type). Alternatively, the resource can be

imported as a picture object by using the

GetResource

or

GetNamedResource

compile-time functions available in NTK. In this case, you must use an

AfterScript

slot to set the value of the

icon

slot to the picture object obtained

by one of these resource functions.

The constant

clIconView

can also be used to indicate a

view of the

clPictureView

class. These two constants

have identical values.

Here is an example of a template defining a view of the

clPictureView

class:

aPicture := {...

viewClass: clPictureView,
viewBounds: {left:0, top:75, right:150, bottom:175},
viewFlags: vVisible+vClickable,
icon: myPicture,

...}

Drawing Non-Default Fonts

13

You can draw a font other than the default font by putting the font specifier style
frame close to the text shape so that another style frame won't override it. Use
either

DrawShape

or

MakePict

.

There are several places where it might seem reasonable to put the style frame with
the font specifier.

DrawShape

takes a style argument, so you could place it there:

:DrawShape(myText, {font: '{family: someFont,

face: 0, size: 9 }});

You can embed a style frame in an array of shapes:

:DrawShape ([{font: ...}, myText, shape ], nil);