NPAPI:BrowserZoomLevelQuery: Difference between revisions
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(NPAPI Browser Zoom Level initial spec) |
(Changed browser zoom to Browser CSS Zoom to make zoom more specific, added requirement for NPP_SetValue) |
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== Status == | == Status == | ||
Initial | Initial Draft | ||
== Contributors == | == Contributors == | ||
*Last modified: | *Last modified: 2016-01-28 | ||
*Authors: Kyle Machulis (Mozilla) | *Authors: Kyle Machulis (Mozilla) | ||
| Line 11: | Line 11: | ||
Currently, NPAPI plugins have no way to know if the browser is running | Currently, NPAPI plugins have no way to know if the browser is running | ||
at a zoom level other than 1x. We need an addition to the API that | at a CSS zoom level other than 1x. We need an addition to the API that | ||
allows plugins to query the current browser zoom level. | allows plugins to query the current browser CSS zoom level. | ||
== Specification == | == Specification == | ||
| Line 19: | Line 19: | ||
<pre> | <pre> | ||
NPNVbrowserCSSZoomFactor = 23 | |||
</pre> | </pre> | ||
This can be retrieved via NPN_GetValue, and will return a double | This can be retrieved via NPN_GetValue, and will return a double | ||
representing the current zoom level of the browser. Since changing | representing the current CSS zoom level of the browser. Since changing CSS | ||
zoom levels updates the window properties, this value can be re-queried | zoom levels updates the window properties, this value can be re-queried | ||
during NPN_SetWindow or other window property update calls, to see if | during NPN_SetWindow or other window property update calls, to see if | ||
a zoom change has been made. | a zoom change has been made. It will also be sent via NPP_SetValue so that | ||
plugins can be notified when it changes. | |||
== Relevant Bugs == | == Relevant Bugs == | ||
[https://bugzilla.mozilla.org/show_bug.cgi?id=1171182 Bug 1171182 - Implement browser zoom query in NPAPI] | [https://bugzilla.mozilla.org/show_bug.cgi?id=1171182 Bug 1171182 - Implement browser zoom query in NPAPI] | ||
Revision as of 00:20, 29 January 2016
Status
Initial Draft
Contributors
- Last modified: 2016-01-28
- Authors: Kyle Machulis (Mozilla)
Overview
Currently, NPAPI plugins have no way to know if the browser is running at a CSS zoom level other than 1x. We need an addition to the API that allows plugins to query the current browser CSS zoom level.
Specification
We'll need to add a NPNV variable:
NPNVbrowserCSSZoomFactor = 23
This can be retrieved via NPN_GetValue, and will return a double representing the current CSS zoom level of the browser. Since changing CSS zoom levels updates the window properties, this value can be re-queried during NPN_SetWindow or other window property update calls, to see if a zoom change has been made. It will also be sent via NPP_SetValue so that plugins can be notified when it changes.