|email@example.com <firstname.lastname@example.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc>||Thu Oct 14 05:29:16 2021 +0000|
|email@example.com <firstname.lastname@example.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc>||Thu Oct 14 05:29:16 2021 +0000|
Determine viewport distances for lazy image loading https://bugs.webkit.org/show_bug.cgi?id=203557 Patch by Rob Buis <email@example.com> on 2021-10-13 Reviewed by Simon Fraser. Determine appropriate lazy image loading viewport distances for desktop and mobile devices by using a lazy load distance of one viewport in all directions. * html/LazyLoadImageObserver.cpp: (WebCore::LazyLoadImageObserver::intersectionObserver): git-svn-id: http://svn.webkit.org/repository/webkit/trunk@284148 268f45cc-cd09-0410-ab3c-d52691b4dbfc
WebKit is a cross-platform web browser engine. On iOS and macOS, it powers Safari, Mail, iBooks, and many other applications.
Visit WebKit Feature Status page to see which Web API has been implemented, in development, or under consideration.
Once your bug is filed, you will receive email when it is updated at each stage in the bug life cycle. After the bug is considered fixed, you may be asked to download the latest nightly and confirm that the fix works for you.
On Windows, follow the instructions on our website.
Run the following command to clone WebKit's Git SVN repository:
git clone firstname.lastname@example.org:WebKit/WebKit.git WebKit
git clone https://github.com/WebKit/WebKit.git WebKit
If you want to be able to track Subversion revision from your git checkout, you can run the following command to do so:
For information about this, and other aspects of using Git with WebKit, read the wiki page.
If you don‘t want to use Git, run the following command to check out WebKit’s Subversion repository:
svn checkout https://svn.webkit.org/repository/webkit/trunk WebKit
Install Xcode and its command line tools if you haven't done so already:
Run the following command to build a debug build with debugging symbols and assertions:
For performance testing, and other purposes, use
You can open
WebKit.xcworkspace to build and debug WebKit within Xcode.
If you don't use a custom build location in Xcode preferences, you have to update the workspace settings to use
WebKitBuild directory. In menu bar, choose File > Workspace Settings, then click the Advanced button, select “Custom”, “Relative to Workspace”, and enter
WebKitBuild for both Products and Intermediates.
iOS, tvOS and watchOS are all considered embedded builds. The first time after you install a new Xcode, you will need to run:
Without this step, you will see the error message: “
target specifies product type ‘com.apple.product-type.tool’, but there’s no such product type for the ‘iphonesimulator’ platform.” when building target
JSCLLIntOffsetsExtractor of project
Run the following command to build a debug build with debugging symbols and assertions for embededded simulators:
Tools/Scripts/build-webkit --debug --<platform>-simulator
or embedded devices:
Tools/Scripts/build-webkit --debug --<platform>-device
For production builds:
cmake -DPORT=GTK -DCMAKE_BUILD_TYPE=RelWithDebInfo -GNinja ninja sudo ninja install
For development builds:
Tools/gtk/install-dependencies Tools/Scripts/update-webkitgtk-libs Tools/Scripts/build-webkit --gtk --debug
For more information on building WebKitGTK+, see the wiki page.
For production builds:
cmake -DPORT=WPE -DCMAKE_BUILD_TYPE=RelWithDebInfo -GNinja ninja sudo ninja install
For development builds:
Tools/wpe/install-dependencies Tools/Scripts/update-webkitwpe-libs Tools/Scripts/build-webkit --wpe --debug
For building WebKit on Windows, see the wiki page.
Run the following command to launch Safari with your local build of WebKit:
run-safari script sets the
DYLD_FRAMEWORK_PATH environment variable to point to your build products, and then launches
DYLD_FRAMEWORK_PATH tells the system loader to prefer your build products over the frameworks installed in
To run other applications with your local build of WebKit, run the following command:
Run the following command to launch iOS simulator with your local build of WebKit:
run-safari --debug --ios-simulator
In both cases, if you have built release builds instead, use
--release instead of
If you have a development build, you can use the run-minibrowser script, e.g.:
run-minibrowser --debug --wpe
Pass one of
--wpe to indicate the port to use.
Congratulations! You’re up and running. Now you can begin coding in WebKit and contribute your fixes and new features to the project. For details on submitting your code to the project, read Contributing Code.