0006496: Morph image snapshot yields a blurred picture

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Category

Severity

Reproducibility

Date Submitted

Last Update

0006496

[Squeak] Morphic

minor

always

05-21-07 12:45

05-21-07 23:59

Reporter

kks

View Status

public

Assigned To

Priority

normal

Resolution

open

Status

new

Product Version

3.10

Summary

0006496: Morph image snapshot yields a blurred picture

Description

Get a halo on a menu and shift-click the viewer icon. The resulting image is blurred (see attached image). If the image's extent is extended by 1@1, the blur goes away. The problem is seen on 3.9 and 3.10 on Linux, Mac and Windows VMs.

Additional Information

The following code is suspect:
Morph>>duplicateMorphImage: evt
        ..
        dup := self asSnapshotThumbnail withSnapshotBorder.
        dup bounds: self bounds.
        ..
Morphs add a 1px border along bottom-right to its underlying image forms, so I tried changing "self bounds" to "self fullBounds". The fix cleared the artifacts for menus and submenus. But for SystemWindows, it yields a Morph with an 1px extra line along the top. The (fullBounds origin y) appears to be less by 1px, so I am not sure if this is the right fix. Can some Morphic experts confirm this bug?

Attached Files

ThumbnailImage.gif [^] (4,734 bytes) 05-21-07 12:45

Morph-duplicateMorphImage.st [^] (449 bytes) 05-21-07 23:39

Relationships

Notes
(0010738 - 201 - 213 - 213 - 213 - 213 - 213) wiz 05-21-07 18:57	I am particular glad you found this one since it affects one of my contributions to 3dot9 and I would like to see it improved by removal of the error. Yours in curiosity and service, --Jerome Peace

(0010739 - 236 - 272 - 272 - 272 - 272 - 272) wiz 05-21-07 23:59	Uploaded Morph-duplicateMorphImage.st which patches the method to use #fullbounds instead of #bounds. Comments. As Subbu mentioned in his reports this fixes the immediate problem. Yours in curiosity and service, --Jerome Peace

Issue History
Date Modified	Username	Field	Change
05-21-07 12:45	kks	New Issue
05-21-07 12:45	kks	File Added: ThumbnailImage.gif
05-21-07 18:57	wiz	Note Added: 0010738
05-21-07 23:39	wiz	File Added: Morph-duplicateMorphImage.st
05-21-07 23:59	wiz	Note Added: 0010739

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