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IDProjectCategoryView StatusDate SubmittedLast Update
0000433graphvizDotty/Lneato/Leftypublic2004-07-13 05:222011-04-28 04:02
ReporterAnkit Gupta 
Assigned Toerg 
PlatformOS*-*-OS Version
Summary0000433: ScrollBar doesn't scroll up or left

The ScrollBar in The DOTTY window (WYSIWYG view) doesn't work properly.

1)Major problem - It doesn't scroll up or left , i.e the scrollbar scrolls in only one direction
which is forward .The horizontal scrollbar doesn't scroll to the left, it keeps on going right
irrespective of where you click on the horizontal bar. Likewise, the vertical scrollbar only
scrolls down wherever you click.

2)Minor problem - It scrolls in discrete steps ( these steps are quite large) , which makes the
view a bit difficult to analyse. In other words, the scrollbar scrolls in jerks and not smoothly

These problems are with all kinds of dot input and on all operating systems. It is not specific to
any input or platform.
Steps To Reproduce

The problem is not specific to a input, it is a general problem of the scrollbar. However, I am
providing a dot file to reproduce the problem.

digraph cstate_r {
b00[sgval="src/[email protected]@[email protected]@STATE_A",shape=circle];
b01[sgval="src/[email protected]@[email protected]@STATE_B",shape=circle];
b10[sgval="src/[email protected]@[email protected]@STATE_C",shape=circle];
b11[sgval="src/[email protected]@[email protected]@STATE_D",shape=circle];
b00 -> b01 [ label="pkt_avl",sgval="src/[email protected]@[email protected]@STATE_B" ];
b00 -> b00 [ label="(!pkt_avl)",sgval="src/[email protected]@[email protected]@STATE_A" ];
b01 -> b10 [ label="loop_cmp",sgval="src/[email protected]@[email protected]@STATE_C",color=red ];
b01 -> b01 [ label="(!loop_cmp)",sgval="src/[email protected]@[email protected]@STATE_B" ];
b01 -> b00 [ label="empty",sgval="src/[email protected]@[email protected]@STATE_A" ];
b10 -> b00 [ label="",sgval="src/[email protected]@[email protected]@STATE_A" ];
b11 -> b00 [ label="",sgval="src/[email protected]@[email protected]@STATE_A",color=red ];
Additional Information
The problem is a critical one since for all views in which scrollbar is required, the
graph cannot be seen and analysed, thus negating the zoom feature of lefty/dotty.

[erg] The user neglected to check the middle and right mouse buttons, which
provide the desired behavior.
TagsNo tags attached.
VERSION     96c (09-24-96)
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- Issue History
Date Modified Username Field Change
2011-04-28 04:02 user1 New Issue
2011-04-28 04:02 user1 Assigned To => erg

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