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LibWeb: Hack requestAnimationFrame() to provide a (very fake) timestamp

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This commit is contained in:
Andreas Kling 2020-04-21 23:49:09 +02:00
parent 627fd6374b
commit 54133c683d
1 changed files with 8 additions and 1 deletions
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9
Libraries/LibWeb/DOM/Window.cpp
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@ -29,6 +29,7 @@
#include <LibGUI/MessageBox.h> #include <LibGUI/MessageBox.h>
#include <LibJS/Interpreter.h> #include <LibJS/Interpreter.h>
#include <LibJS/Runtime/Function.h> #include <LibJS/Runtime/Function.h>
#include <LibJS/Runtime/MarkedValueList.h>
#include <LibWeb/DOM/Window.h> #include <LibWeb/DOM/Window.h>
namespace Web { namespace Web {
@ -81,10 +82,16 @@ void Window::set_timeout(JS::Function& callback, i32 interval)
i32 Window::request_animation_frame(JS::Function& callback) i32 Window::request_animation_frame(JS::Function& callback)
{ {
// FIXME: This is extremely fake!
static double fake_timestamp = 0;
i32 link_id = GUI::DisplayLink::register_callback([handle = make_handle(&callback)](i32 link_id) { i32 link_id = GUI::DisplayLink::register_callback([handle = make_handle(&callback)](i32 link_id) {
auto* function = const_cast<JS::Function*>(static_cast<const JS::Function*>(handle.cell())); auto* function = const_cast<JS::Function*>(static_cast<const JS::Function*>(handle.cell()));
auto& interpreter = function->interpreter(); auto& interpreter = function->interpreter();
interpreter.call(function); JS::MarkedValueList arguments(interpreter.heap());
arguments.append(JS::Value(fake_timestamp));
fake_timestamp += 10;
interpreter.call(function, {}, move(arguments));
GUI::DisplayLink::unregister_callback(link_id); GUI::DisplayLink::unregister_callback(link_id);
}); });