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The first possible syntax is a list of integers. Each element
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represents the number of pixels of a line segment. Only the odd
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segments are drawn using the "outline" color. The other segments
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are drawn transparant.
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are drawn transparent.
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The second possible syntax is a character list containing only
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5 possible characters B<[.,-_ ]>. The space can be used
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to enlarge the space between other line elements, and can not
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occur as the first position in the string. Some examples:
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5 possible characters B<[.,-_ ]>, with the first 4 characters
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producing a segment of length 1 to 4, respectively, followed
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by a transparent segment of length 2. The space can be used
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repeatedly to enlarge the space between other line elements
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by 1, and can not occur as the first position in the string.
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The main difference of this syntax with the previous one is
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that it it shape-conserving. This means that all values in the dash
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list will be multiplied by the line width before display. This
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assures that "." will always be displayed as a dot and "-"
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always as a dash regardless of the line width.
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Some examples, for a line width of 2:
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-dash . = -dash [2,4]
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366
-dash - = -dash [6,4]
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-dash -. = -dash [6,4,2,4]
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368
-dash -.. = -dash [6,4,2,4,2,4]
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-dash '. ' = -dash [2,8]
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-dash '. ' = -dash [2,8]
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370
-dash ',' = -dash [4,4]
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The main difference of this syntax with the previous is that it
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it shape-conserving. This means that all values in the dash
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list will be multiplied by the line width before display. This
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assures that "." will always be displayed as a dot and "-"
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always as a dash regardless of the line width.
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On systems where only a limited set of dash patterns, the dash
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pattern will be displayed as the most close dash pattern that
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is available. For example, on Windows only the first 4 of the
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On systems where only a limited set of dash patterns is available,
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the dash pattern will be displayed as the closest available dash
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pattern. For example, on Windows only the first 4 of the
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above examples are available. The last 2 examples will be
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displayed identically as the first one.
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=item B<-disabledbitmap> =E<gt> I<bitmap>
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Specifies the bitmaps to display in the item in its normal, active and
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disabled states. All bitmaps must have the same width and height.
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I<Bitmap> may have any of the forms accepted by B<Tk_GetBitmap>.
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=item B<-foreground> =E<gt> I<color>
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=item B<-activeforeground> =E<gt> I<bitmap>
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=item B<-activeforeground> =E<gt> I<color>
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=item B<-disabledforeground> =E<gt> I<bitmap>
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=item B<-disabledforeground> =E<gt> I<color>
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Specifies the color to use for each of the bitmap's '1' valued pixels
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in its normal, active and disabled states.
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=item B<-disabledimage> =E<gt> I<name>
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Specifies the name of the images to display in the item in is normal,
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active and disabled states.
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This image must have been created previously with the
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B<imageCreate> method.
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active and disabled states. This image must have been created
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previously, see L<Tk::Image>.
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=item B<-state> =E<gt> I<state>
added
removed
pod/Canvas.pod
