Bug 68853 – [Chromium] Need a mechanism to query plugins for scaling to printable area or not.

• Component: WebKit API
• Status: RESOLVED FIXED

[Steve VanDeBogart]

The PDF format has a field to request that the output not be scaled to the printable area.  A decision about printing to the printable area vs. the entire page needs to be made before the printing flow starts.  The attached patch adds an accessor/API so that the plugins can indicate that print scaling should be disabled.

[Steve VanDeBogart]

Created attachment 108765 [details]
Add API to indicate if print scaling should be disabled.

This patch depends on http://codereview.chromium.org/8041052/ which is still in review.

[WebKit Review Bot]

Attachment 108765 [details] did not pass style-queue:

Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/WebKit/chromium/ChangeLog', u'Sourc..." exit_code: 1

Source/WebKit/chromium/public/WebFrame.h:453:  The parameter name "node" adds no information, so it should be removed.  [readability/parameter_name] [5]
Source/WebKit/chromium/src/WebFrameImpl.h:171:  The parameter name "node" adds no information, so it should be removed.  [readability/parameter_name] [5]
Total errors found: 2 in 7 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Steve VanDeBogart]

Created attachment 108775 [details]
Add API to indicate if print scaling should be disabled.

[Steve VanDeBogart]

Comment on attachment 108775 [details]
Add API to indicate if print scaling should be disabled.

Chromium part is in.  This can now land safely.

[Darin Fisher (:fishd, Google)]

Comment on attachment 108775 [details]
Add API to indicate if print scaling should be disabled.

View in context: https://bugs.webkit.org/attachment.cgi?id=108775&action=review

> Source/WebKit/chromium/public/WebFrame.h:451
> +    // If the frame or node is a plugin whose content indicates that printed

What does it mean for a frame to be a plugin?  Are you referring to the case of
a full-frame plugin, which has a PluginDocument?  Maybe say "If the frame contains
a full-frame plugin or the given node refers to a plugin, and the plugin's content
indicates that printed output..."

> Source/WebKit/chromium/src/WebFrameImpl.cpp:1404
> +    ASSERT(!frame()->document()->isFrameSet());

why do you have this assertion here?

> Source/WebKit/chromium/src/WebFrameImpl.cpp:1412
> +      return false;

nit: indentation

[Steve VanDeBogart]

Created attachment 110562 [details]
Add API to indicate if print scaling should be disabled.

Address nits and remove unneeded Assert.

[WebKit Review Bot]

Please wait for approval from [e-mail] before submitting because this patch contains changes to the Chromium public API.

[Steve VanDeBogart]

Comment on attachment 108775 [details]
Add API to indicate if print scaling should be disabled.

View in context: https://bugs.webkit.org/attachment.cgi?id=108775&action=review

>> Source/WebKit/chromium/public/WebFrame.h:451
>> +    // If the frame or node is a plugin whose content indicates that printed
> 
> What does it mean for a frame to be a plugin?  Are you referring to the case of
> a full-frame plugin, which has a PluginDocument?  Maybe say "If the frame contains
> a full-frame plugin or the given node refers to a plugin, and the plugin's content
> indicates that printed output..."

Done.

>> Source/WebKit/chromium/src/WebFrameImpl.cpp:1404
>> +    ASSERT(!frame()->document()->isFrameSet());
> 
> why do you have this assertion here?

Copied from printBegin(), removed.

>> Source/WebKit/chromium/src/WebFrameImpl.cpp:1412
>> +      return false;
> 
> nit: indentation

Done.

[WebKit Review Bot]

Comment on attachment 110562 [details]
Add API to indicate if print scaling should be disabled.

Clearing flags on attachment: 110562

Committed r97233: <http://trac.webkit.org/changeset/97233>

[WebKit Review Bot]

All reviewed patches have been landed.  Closing bug.