LibCore: Put all classes in the Core namespace and remove the leading C

I've been wanting to do this for a long time. It's time we start being
consistent about how this stuff works.

The new convention is:

- "LibFoo" is a userspace library that provides the "Foo" namespace.

That's it :^) This was pretty tedious to convert and I didn't even
start on LibGUI yet. But it's coming up next.

3 files changed, 7 insertions, 7 deletions

diff --git a/Applications/Piano/MainWidget.cpp b/Applications/Piano/MainWidget.cpp
index 044992a43e..cf597f6584 100644
--- a/Applications/Piano/MainWidget.cpp
+++ b/Applications/Piano/MainWidget.cpp
@@ -70,7 +70,7 @@ MainWidget::~MainWidget()
 // FIXME: There are some unnecessary calls to update() throughout this program,
 // which are an easy target for optimization.
 
-void MainWidget::custom_event(CCustomEvent&)
+void MainWidget::custom_event(Core::CustomEvent&)
 {
     m_wave_widget->update();
 
diff --git a/Applications/Piano/MainWidget.h b/Applications/Piano/MainWidget.h
index 5f1fce8afd..2a85ff4ab7 100644
--- a/Applications/Piano/MainWidget.h
+++ b/Applications/Piano/MainWidget.h
@@ -27,8 +27,8 @@
 
 #pragma once
 
+#include "Music.h"
 #include <LibGUI/GWidget.h>
-#include <Music.h>
 
 class AudioEngine;
 class WaveWidget;
@@ -48,7 +48,7 @@ private:
 
     virtual void keydown_event(GKeyEvent&) override;
     virtual void keyup_event(GKeyEvent&) override;
-    virtual void custom_event(CCustomEvent&) override;
+    virtual void custom_event(Core::CustomEvent&) override;
 
     void note_key_action(int key_code, Switch);
     void special_key_action(int key_code);
diff --git a/Applications/Piano/main.cpp b/Applications/Piano/main.cpp
index 3d8f0a36b4..d33c0f70b8 100644
--- a/Applications/Piano/main.cpp
+++ b/Applications/Piano/main.cpp
@@ -55,8 +55,8 @@ int main(int argc, char** argv)
     window->show();
 
     LibThread::Thread audio_thread([&] {
-        auto audio = CFile::construct("/dev/audio");
-        if (!audio->open(CIODevice::WriteOnly)) {
+        auto audio = Core::File::construct("/dev/audio");
+        if (!audio->open(Core::IODevice::WriteOnly)) {
             dbgprintf("Can't open audio device: %s", audio->error_string());
             return 1;
         }
@@ -65,8 +65,8 @@ int main(int argc, char** argv)
         for (;;) {
             audio_engine.fill_buffer(buffer);
             audio->write(reinterpret_cast<u8*>(buffer.data()), buffer_size);
-            CEventLoop::current().post_event(*main_widget, make<CCustomEvent>(0));
-            CEventLoop::wake();
+            Core::EventLoop::current().post_event(*main_widget, make<Core::CustomEvent>(0));
+            Core::EventLoop::wake();
         }
     });
     audio_thread.start();