Userland+LibGUI: Add shorthand versions of the Margins constructor

This allows for typing [8] instead of [8, 8, 8, 8] to specify the same
margin on all edges, for example. The constructors follow CSS' style of
specifying margins. The added constructors are:

- Margins(int all): Sets the same margin on all edges.
- Margins(int vertical, int horizontal): Sets the first argument to top
  and bottom margins, and the second argument to left and right margins.
- Margins(int top, int vertical, int bottom): Sets the first argument to
  the top margin, the second argument to the left and right margins,
  and the third argument to the bottom margin.

2 files changed, 2 insertions, 2 deletions

diff --git a/Userland/Applications/Piano/MainWidget.cpp b/Userland/Applications/Piano/MainWidget.cpp
index 296c0180c0..d9f95956ff 100644
--- a/Userland/Applications/Piano/MainWidget.cpp
+++ b/Userland/Applications/Piano/MainWidget.cpp
@@ -24,7 +24,7 @@ MainWidget::MainWidget(TrackManager& track_manager, AudioPlayerLoop& loop)
 {
     set_layout<GUI::VerticalBoxLayout>();
     layout()->set_spacing(2);
-    layout()->set_margins({ 2, 2, 2, 2 });
+    layout()->set_margins(2);
     set_fill_with_background_color(true);
 
     m_wave_widget = add<WaveWidget>(track_manager);
diff --git a/Userland/Applications/Piano/SamplerWidget.cpp b/Userland/Applications/Piano/SamplerWidget.cpp
index c9215ec08a..87b8cdf327 100644
--- a/Userland/Applications/Piano/SamplerWidget.cpp
+++ b/Userland/Applications/Piano/SamplerWidget.cpp
@@ -72,7 +72,7 @@ SamplerWidget::SamplerWidget(TrackManager& track_manager)
     : m_track_manager(track_manager)
 {
     set_layout<GUI::VerticalBoxLayout>();
-    layout()->set_margins({ 10, 10, 10, 10 });
+    layout()->set_margins(10);
     layout()->set_spacing(10);
     set_fill_with_background_color(true);