From 9483adee465732cd8acc2bb1991dffdae813673c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?kleines=20Filmr=C3=B6llchen?= <filmroellchen@serenityos.org>
Date: Sat, 13 Aug 2022 13:03:23 +0200
Subject: PixelPaint: Expose the GUI event loop from the ImageEditor

This allows processing threads to call back into the GUI.
---
 Userland/Applications/PixelPaint/ImageEditor.cpp | 1 +
 Userland/Applications/PixelPaint/ImageEditor.h   | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/Userland/Applications/PixelPaint/ImageEditor.cpp b/Userland/Applications/PixelPaint/ImageEditor.cpp
index 62cd342b49..05ce2e857f 100644
--- a/Userland/Applications/PixelPaint/ImageEditor.cpp
+++ b/Userland/Applications/PixelPaint/ImageEditor.cpp
@@ -30,6 +30,7 @@ constexpr int marching_ant_length = 4;
 ImageEditor::ImageEditor(NonnullRefPtr<Image> image)
     : m_image(move(image))
     , m_title("Untitled")
+    , m_gui_event_loop(Core::EventLoop::current())
 {
     set_focus_policy(GUI::FocusPolicy::StrongFocus);
     m_undo_stack.push(make<ImageUndoCommand>(*m_image, String()));
diff --git a/Userland/Applications/PixelPaint/ImageEditor.h b/Userland/Applications/PixelPaint/ImageEditor.h
index b7d5888d43..d0e2bc4cb2 100644
--- a/Userland/Applications/PixelPaint/ImageEditor.h
+++ b/Userland/Applications/PixelPaint/ImageEditor.h
@@ -12,6 +12,7 @@
 #include "Image.h"
 #include "Selection.h"
 #include <AK/Variant.h>
+#include <LibCore/EventLoop.h>
 #include <LibGUI/AbstractZoomPanWidget.h>
 #include <LibGUI/Frame.h>
 #include <LibGUI/UndoStack.h>
@@ -114,6 +115,8 @@ public:
     void draw_marching_ants(Gfx::Painter&, Gfx::IntRect const&) const;
     void draw_marching_ants(Gfx::Painter&, Mask const&) const;
 
+    Core::EventLoop& gui_event_loop() { return m_gui_event_loop; }
+
 private:
     explicit ImageEditor(NonnullRefPtr<Image>);
 
@@ -179,6 +182,8 @@ private:
     int m_marching_ants_offset { 0 };
 
     void draw_marching_ants_pixel(Gfx::Painter&, int x, int y) const;
+
+    Core::EventLoop& m_gui_event_loop;
 };
 
 }
-- 
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