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Bug 1541175 Part 2: Force RDM UI to be at 100% zoom. r=pbro,ochameau

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Once RDM is up-and-running, the Zoom UI will stay synchronized with the
zoom level of the RDM content pane. These changes ensure that the RDM
tools are forced to 100%, and then does a fixup to get the Zoom UI to
match the RDM content pane zoom level again.

Differential Revision: https://phabricator.services.mozilla.com/D26045

--HG--
extra : moz-landing-system : lando
This commit is contained in:
Brad Werth 2019-05-06 07:21:13 +00:00
parent cda550669d
commit fcf2e160d9
1 changed files with 24 additions and 0 deletions
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24
devtools/client/responsive.html/manager.js
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@ -352,6 +352,25 @@ ResponsiveUI.prototype = {
debug("Wait until swap start");
await this.swap.start();
// Set the ui toolWindow to fullZoom and textZoom of 100%. Directly change
// the zoom levels of the toolwindow docshell. That doesn't affect the zoom
// of the RDM content, but it does send events that confuse the Zoom UI.
// So before we adjust the zoom levels of the toolWindow, we first cache
// the reported zoom levels of the RDM content, because we'll have to
// re-apply them to re-sync the Zoom UI.
// Cache the values now and we'll re-apply them near the end of this function.
// This is important since other steps here can also cause the Zoom UI update
// event to be sent for other browsers, and this means that the changes from
// our Zoom UI update event would be overwritten. After this function, future
// changes to zoom levels will send Zoom UI update events in an order that
// keeps the Zoom UI synchronized with the RDM content zoom levels.
const fullZoom = this.tab.linkedBrowser.fullZoom;
const textZoom = this.tab.linkedBrowser.textZoom;
ui.toolWindow.docShell.contentViewer.fullZoom = 1;
ui.toolWindow.docShell.contentViewer.textZoom = 1;
this.tab.addEventListener("BeforeTabRemotenessChange", this);
// Notify the inner browser to start the frame script
@ -371,6 +390,11 @@ ResponsiveUI.prototype = {
new SettingOnboardingTooltip(ui.toolWindow.document);
}
// Re-apply our cached zoom levels. Other Zoom UI update events have finished
// by now.
this.tab.linkedBrowser.fullZoom = fullZoom;
this.tab.linkedBrowser.textZoom = textZoom;
// Non-blocking message to tool UI to start any delayed init activities
message.post(this.toolWindow, "post-init");