<Swing Dev> [11] RFR: JDK-8206238: Aspect ratio is not maintained when image is scaled in JEditorPane

Thu Jul 12 08:17:10 UTC 2018

Ok. Other than that changes looks fine Krishna.

Thanks and regards,

Shashi

From: Krishna Addepalli 
Sent: Thursday, July 12, 2018 12:25 PM
To: Shashidhara Veerabhadraiah <shashidhara.veerabhadraiah at oracle.com>; Prasanta Sadhukhan <prasanta.sadhukhan at oracle.com>; swing-dev at openjdk.java.net
Subject: RE: <Swing Dev> [11] RFR: JDK-8206238: Aspect ratio is not maintained when image is scaled in JEditorPane

Hi Shashi,

If we need the image to be presented as is, then we can choose not to specify any width/height attribute, and that will maintain the aspect ratio.

As long as we specify one of the attributes, then it is applied to the other as well. I understand your point, and that can be one way to handle it, but HTML chooses to handle it differently.

I have checked in W3Schools as well, and the behavior is same as in Chrome.

Hope this clarifies.

Thanks,

Krishna

From: Shashidhara Veerabhadraiah 
Sent: Wednesday, July 11, 2018 8:59 PM
To: Krishna Addepalli <HYPERLINK "mailto:krishna.addepalli at oracle.com"krishna.addepalli at oracle.com>; Prasanta Sadhukhan <HYPERLINK "mailto:prasanta.sadhukhan at oracle.com"prasanta.sadhukhan at oracle.com>; HYPERLINK "mailto:swing-dev at openjdk.java.net"swing-dev at openjdk.java.net
Subject: Re: <Swing Dev> [11] RFR: JDK-8206238: Aspect ratio is not maintained when image is scaled in JEditorPane

Hi Krishna, What I think is that, depicting a circle as an ellipse is wrong as per the bug description, isn't it the other way too is wrong as well? i.e., depicting an ellipse(say a 100 by 200 px) as a circle(Say 100 by 100 html attribute). 

I could not justify always choosing 1:1 aspect ratio when you can still maintain the aspect ratio(Including the chrome example)?

Thanks and regards,

Shashi

On 11/07/18 4:40 PM, Krishna Addepalli wrote:

Hi Shashi,

When one of the attributes of the image is not specified(width/height), the default behavior is to copy the value over from the other attribute. I have checked this behavior in Chrome.

Attached the html for your reference(just adjust the path to circle.png appropriately on your system).

Thanks,

Krishna

From: Shashidhara Veerabhadraiah 
Sent: Wednesday, July 11, 2018 3:07 PM
To: Krishna Addepalli HYPERLINK "mailto:krishna.addepalli at oracle.com"<krishna.addepalli at oracle.com>; Prasanta Sadhukhan HYPERLINK "mailto:prasanta.sadhukhan at oracle.com"<prasanta.sadhukhan at oracle.com>; HYPERLINK "mailto:swing-dev at openjdk.java.net"swing-dev at openjdk.java.net
Subject: RE: <Swing Dev> [11] RFR: JDK-8206238: Aspect ratio is not maintained when image is scaled in JEditorPane

Hi Krishna, One clarification about the change:

The said solution holds good for an image with an aspect ratio of 1:1. Can this aspect ratio be considered default? I think we should derive the aspect ratio from the image and use that value to calculate the unknown attribute of the scale information!!

Thanks and regards,
Shashi

From: Krishna Addepalli 
Sent: Wednesday, July 11, 2018 2:03 PM
To: Prasanta Sadhukhan <HYPERLINK "mailto:prasanta.sadhukhan at oracle.com"prasanta.sadhukhan at oracle.com>; HYPERLINK "mailto:swing-dev at openjdk.java.net"swing-dev at openjdk.java.net
Subject: Re: <Swing Dev> [11] RFR: JDK-8206238: Aspect ratio is not maintained when image is scaled in JEditorPane

Thanks for the review Prasanta.

I need one more review to push this regression.

Thanks, 
Krishna

From: Prasanta Sadhukhan 
Sent: Wednesday, July 11, 2018 10:28 AM
To: Krishna Addepalli <HYPERLINK "mailto:krishna.addepalli at oracle.com"krishna.addepalli at oracle.com>; HYPERLINK "mailto:swing-dev at openjdk.java.net"swing-dev at openjdk.java.net
Subject: Re: <Swing Dev> [11] RFR: JDK-8206238: Aspect ratio is not maintained when image is scaled in JEditorPane

+1

Regards
Prasanta

On 7/10/2018 6:59 PM, Krishna Addepalli wrote:

Sorry my bad. Here is the new webrev: HYPERLINK "http://cr.openjdk.java.net/%7Ekaddepalli/8206238/webrev02/"http://cr.openjdk.java.net/~kaddepalli/8206238/webrev02/

Thanks,

Krishna

From: Prasanta Sadhukhan 
Sent: Tuesday, July 10, 2018 6:03 PM
To: Krishna Addepalli HYPERLINK "mailto:krishna.addepalli at oracle.com"<krishna.addepalli at oracle.com>; HYPERLINK "mailto:swing-dev at openjdk.java.net"swing-dev at openjdk.java.net
Subject: Re: <Swing Dev> [11] RFR: JDK-8206238: Aspect ratio is not maintained when image is scaled in JEditorPane

Ok. Thanks for the clarification. Btw, there is another reversal as I mentioned earlier

158         System.out.println("Test with only height set to 100");
 159         test(r, editorPanes[4], 100, 100);
 160 
 161         System.out.println("Test with only width set to 100");
 162         test(r, editorPanes[5], 100, 100);

as editorPane[4] tests width 100
121             editorPanes[4] = new JEditorPane("text/html",
 122                     "<img width=\"100\" src =\"

Regards
Prasanta

On 7/10/2018 5:54 PM, Krishna Addepalli wrote:

Hi Prasanta,

Thanks for your review. Here is the updated webrev: HYPERLINK "http://cr.openjdk.java.net/%7Ekaddepalli/8206238/webrev01/"http://cr.openjdk.java.net/~kaddepalli/8206238/webrev01/

So, the actual width and height of the image is 200, but the bug is that when any other value (only height or width) is specified, then the image should be scaled to that size(both width and height).

The test tests the same with different values like 100, 50 and 300 apart from the original image size of 200.

Hope this clarifies.

Thanks,

Krishna

From: Prasanta Sadhukhan 
Sent: Tuesday, July 10, 2018 3:48 PM
To: Krishna Addepalli HYPERLINK "mailto:krishna.addepalli at oracle.com"<krishna.addepalli at oracle.com>; HYPERLINK "mailto:swing-dev at openjdk.java.net"swing-dev at openjdk.java.net
Subject: Re: <Swing Dev> [11] RFR: JDK-8206238: Aspect ratio is not maintained when image is scaled in JEditorPane

Fix looks good to me. For test,

152         System.out.println("Test with none of them set");
 153         test(r, editorPanes[2], 200, 200);
 154 
 155         System.out.println("Test with both of them set to 200");
 156         test(r, editorPanes[3], 200, 200);

should be reversed as you do

115             editorPanes[2] = new JEditorPane("text/html",
 116                     "<img width=\"200\" height=\"200\" src=\HYPERLINK "file:///\\""file:///" + ABSOLUTE_FILE_PATH + "\"");
 117 
 118             editorPanes[3] = new JEditorPane("text/html",
 119                     "<img src=\HYPERLINK "file:///\\""file:///" + ABSOLUTE_FILE_PATH + "\"");

Same for 158, 161.

Also, what is the need for
158         System.out.println("Test with only height set to 100");
when you already have a test for height only
146         System.out.println("Test with only height set to 200");

SImilar for width.

Regards
Prasanta
On 7/10/2018 3:15 PM, Krishna Addepalli wrote:

Hi All,

Please review a fix for the bug JDK-8206238: https://bugs.openjdk.java.net/browse/JDK-8206238

Webrev: HYPERLINK "http://cr.openjdk.java.net/%7Ekaddepalli/8206238/webrev00/"http://cr.openjdk.java.net/~kaddepalli/8206238/webrev00/

The problem is that, when any one of the attributes for the image (height/width), are specified, it should copy the value to the other attribute. Currently, it only updates the respective attribute, and fills the other attribute with the size of the image.

Fixed this problem in the proposed patch.

Thanks,

Krishna

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