MySQL Bugs: #41636: Straight vertical or horizontal relationship not clickable

Bug #41636	Straight vertical or horizontal relationship not clickable
Submitted:	19 Dec 2008 12:37	Modified:	17 Sep 2009 15:27
Reporter:	Karsten Wutzke	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Workbench	Severity:	S3 (Non-critical)
Version:	5.0.29	OS:	Windows (XP)
Assigned to:	Alfredo Kojima	CPU Architecture:	Any
Tags:	CHECKED, relationship vertical horizontal click hover

Description:
I try to model my diagram's relationships without "angles", so I often wind up having straight lines between tables. With 5.0.29 (can't say if any previous version are affected, too) when hovering over a relationship, it doesn't turn red and thus can't be selected via click.

How to repeat:
Try to move table boxes around so that either an exactly vertical or horizontal line is created. Moving the mouse cursor over them does nothing.

Workaround: Either produce a jagged edge or use the mouse with *pressed* left mouse button to select with multi object selection tool.

Suggested fix:
It seems like a relationship line gets some size/width of the orthogonal line if one exists. Offsetting line with one or a few pixels restores the desired behavior. Looks like some property is being set to zero which should really be the minimum X pixels that a straight line needs to be in size/width.

Thank you for the bug report. It is possible you illustrate that with a screen-shot?. Thanks in advance.

No red hover shown on relationship

Attachment: mysqlwb-nohovershown.jpg (image/jpeg, text), 36.03 KiB.

The screenshot doesn't save the cursor on Windows XP, so I marked the point with a red X where the cursor was when I created the screenshot. The next image shows a slightly displaced relationship with a small edge in between...

Red hover shown on relationship

Attachment: mysqlwb-hovershown.jpg (image/jpeg, text), 35.58 KiB.

The pixel span, where the relationship becomes red is just one pixel wide in the example. It seems to be zero for the straight edge example...

Synopsis corrected (typo)

Could you, please, upload the .mwb file that demonstrates the behaviour described? I can not repeat this problem.

I think you have to zoom out a little... as a matter of fact, using the default zoom level (which I didn't when posting this bug report) it seems to work with straight lines, however, I have to hit the exact pixel where the line is. For angled relationships, all seems to be ok.

Example relationship (zoom out)

Attachment: straight-and-angled-lines.mwb (application/octet-stream, text), 7.61 KiB.

Thank you for the feedback. Verified with the sample project provided.

this has been improved during optimization/changes of drawing code. could not reproduce that anymore with 5.2.3 and 5.1.18