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Bug 1231517 - part 4, Add ZoomToFocusedInput function to nsDOMWindowUtils r=kats

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This commit is contained in:
Randall Barker 2016-01-19 17:45:39 -08:00
parent 5595d357f2
commit 1bb772ec45
2 changed files with 60 additions and 1 deletions
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54
dom/base/nsDOMWindowUtils.cpp
View File

@ -105,6 +105,7 @@
#include "nsDocument.h"
#include "HTMLImageElement.h"
#include "mozilla/css/ImageLoader.h"
#include "mozilla/layers/APZCTreeManager.h" // for layers::ZoomToRectBehavior
#ifdef XP_WIN
#undef GetClassName
@ -2421,6 +2422,59 @@ nsDOMWindowUtils::FlushApzRepaints(bool* aOutResult)
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::ZoomToFocusedInput()
{
nsIWidget* widget = GetWidget();
if (!widget) {
return NS_OK;
}
// If APZ is not enabled, this function is a no-op.
if (!widget->AsyncPanZoomEnabled()) {
return NS_OK;
}
nsFocusManager* fm = nsFocusManager::GetFocusManager();
if (!fm) {
return NS_OK;
}
nsIContent* content = fm->GetFocusedContent();
if (!content) {
return NS_OK;
}
nsIPresShell* shell = APZCCallbackHelper::GetRootContentDocumentPresShellForContent(content);
if (!shell) {
return NS_OK;
}
nsIScrollableFrame* rootScrollFrame = shell->GetRootScrollFrameAsScrollable();
if (!rootScrollFrame) {
return NS_OK;
}
nsIDocument* document = shell->GetDocument();
if (!document) {
return NS_OK;
}
uint32_t presShellId;
FrameMetrics::ViewID viewId;
if (APZCCallbackHelper::GetOrCreateScrollIdentifiers(document->GetDocumentElement(), &presShellId, &viewId)) {
uint32_t flags = layers::DISABLE_ZOOM_OUT;
if (!Preferences::GetBool("formhelper.autozoom")) {
flags |= layers::PAN_INTO_VIEW_ONLY;
}
CSSRect bounds = nsLayoutUtils::GetBoundingContentRect(content, rootScrollFrame);
bounds.Inflate(15.0f, 0.0f);
widget->ZoomToRect(presShellId, viewId, bounds, flags);
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMWindowUtils::ComputeAnimationDistance(nsIDOMElement* aElement,
const nsAString& aProperty,

7
dom/interfaces/base/nsIDOMWindowUtils.idl
View File

@ -49,7 +49,7 @@ interface nsIJSRAIIHelper;
interface nsIContentPermissionRequest;
interface nsIObserver;
[scriptable, uuid(7846c43d-e131-40a6-8417-3be2c7e11df1)]
[scriptable, uuid(ca6a458c-82e7-4979-886e-6d214eac6f0b)]
interface nsIDOMWindowUtils : nsISupports {
/**
@ -1458,6 +1458,11 @@ interface nsIDOMWindowUtils : nsISupports {
*/
bool flushApzRepaints();
/**
* Ask APZ to pan and zoom to the focused input element.
*/
void zoomToFocusedInput();
/**
* Method for testing StyleAnimationValue::ComputeDistance.
*