PixelPaint: Draw the current editor selection as marching ants

This patch moves the marching ants painting code to Selection and
unifies the timer mechanism so that all marching ants are synchronized
which looks neat. :^)

1 files changed, 7 insertions, 1 deletions

diff --git a/Userland/Applications/PixelPaint/Selection.h b/Userland/Applications/PixelPaint/Selection.h
index e852f07da4..1322a14563 100644
--- a/Userland/Applications/PixelPaint/Selection.h
+++ b/Userland/Applications/PixelPaint/Selection.h
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <LibCore/Timer.h>
 #include <LibGfx/Rect.h>
 
 namespace PixelPaint {
@@ -15,7 +16,7 @@ class ImageEditor;
 // Coordinates are image-relative.
 class Selection {
 public:
-    Selection() { }
+    explicit Selection(ImageEditor&);
 
     bool is_empty() const { return m_rect.is_empty(); }
     void clear() { m_rect = {}; }
@@ -23,8 +24,13 @@ public:
 
     void paint(Gfx::Painter&, ImageEditor const&);
 
+    void draw_marching_ants(Gfx::Painter&, Gfx::IntRect const&) const;
+
 private:
+    ImageEditor& m_editor;
     Gfx::IntRect m_rect;
+    RefPtr<Core::Timer> m_marching_ants_timer;
+    int m_marching_ants_offset { 0 };
 };
 
 }