Libraries: Use default constructors/destructors in LibGfx

https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines#cother-other-default-operation-rules

"The compiler is more likely to get the default semantics right and
you cannot implement these functions better than the compiler."

Userland/Libraries/LibGfx/BMPLoader.cpp

@@ -1307,9 +1307,7 @@ BMPImageDecoderPlugin::BMPImageDecoderPlugin(const u8* data, size_t data_size)
     m_context->file_size = data_size;
 }
 
-BMPImageDecoderPlugin::~BMPImageDecoderPlugin()
-{
-}
+BMPImageDecoderPlugin::~BMPImageDecoderPlugin() = default;
 
 IntSize BMPImageDecoderPlugin::size()
 {

Userland/Libraries/LibGfx/ClassicWindowTheme.cpp

@@ -16,14 +16,6 @@ namespace Gfx {
 
 static constexpr int menubar_height = 20;
 
-ClassicWindowTheme::ClassicWindowTheme()
-{
-}
-
-ClassicWindowTheme::~ClassicWindowTheme()
-{
-}
-
 Gfx::IntRect ClassicWindowTheme::titlebar_icon_rect(WindowType window_type, const IntRect& window_rect, const Palette& palette) const
 {
     if (window_type == WindowType::ToolWindow)

Userland/Libraries/LibGfx/ClassicWindowTheme.h

@@ -13,8 +13,8 @@ namespace Gfx {
 
 class ClassicWindowTheme final : public WindowTheme {
 public:
-    ClassicWindowTheme();
-    virtual ~ClassicWindowTheme() override;
+    ClassicWindowTheme() = default;
+    virtual ~ClassicWindowTheme() override = default;
 
     virtual void paint_normal_frame(Painter& painter, WindowState window_state, const IntRect& window_rect, StringView window_title, const Bitmap& icon, const Palette& palette, const IntRect& leftmost_button_rect, int menu_row_count, bool window_modified) const override;
     virtual void paint_tool_window_frame(Painter&, WindowState, const IntRect& window_rect, StringView title, const Palette&, const IntRect& leftmost_button_rect) const override;

Userland/Libraries/LibGfx/DDSLoader.cpp

@@ -944,9 +944,7 @@ DDSImageDecoderPlugin::DDSImageDecoderPlugin(const u8* data, size_t size)
     m_context->data_size = size;
 }
 
-DDSImageDecoderPlugin::~DDSImageDecoderPlugin()
-{
-}
+DDSImageDecoderPlugin::~DDSImageDecoderPlugin() = default;
 
 IntSize DDSImageDecoderPlugin::size()
 {

Userland/Libraries/LibGfx/DisjointRectSet.h

@@ -17,8 +17,8 @@ public:
     DisjointRectSet(const DisjointRectSet&) = delete;
     DisjointRectSet& operator=(const DisjointRectSet&) = delete;
 
-    DisjointRectSet() { }
-    ~DisjointRectSet() { }
+    DisjointRectSet() = default;
+    ~DisjointRectSet() = default;
 
     DisjointRectSet(const IntRect& rect)
     {

Userland/Libraries/LibGfx/Filters/BoxBlurFilter.h

@@ -13,8 +13,8 @@ namespace Gfx {
 template<size_t N>
 class BoxBlurFilter : public GenericConvolutionFilter<N> {
 public:
-    BoxBlurFilter() { }
-    virtual ~BoxBlurFilter() { }
+    BoxBlurFilter() = default;
+    virtual ~BoxBlurFilter() = default;
 
     virtual const char* class_name() const override { return "BoxBlurFilter"; }
 };

Userland/Libraries/LibGfx/Filters/Filter.h

@@ -17,9 +17,9 @@ public:
     public:
         virtual bool is_generic_convolution_filter() const { return false; }
 
-        virtual ~Parameters() { }
+        virtual ~Parameters() = default;
     };
-    virtual ~Filter() { }
+    virtual ~Filter() = default;
 
     virtual const char* class_name() const = 0;
 
@@ -27,7 +27,7 @@ public:
     virtual void apply(Bitmap&, IntRect const&, Bitmap const&, IntRect const&) {};
 
 protected:
-    Filter() { }
+    Filter() = default;
 };
 
 }

Userland/Libraries/LibGfx/Filters/GenericConvolutionFilter.h

@@ -58,8 +58,8 @@ public:
         RefPtr<Gfx::Bitmap> m_target;
     };
 
-    GenericConvolutionFilter() { }
-    virtual ~GenericConvolutionFilter() { }
+    GenericConvolutionFilter() = default;
+    virtual ~GenericConvolutionFilter() = default;
 
     virtual const char* class_name() const override { return "GenericConvolutionFilter"; }
 

Userland/Libraries/LibGfx/Filters/GrayscaleFilter.h

@@ -12,8 +12,8 @@ namespace Gfx {
 
 class GrayscaleFilter : public ColorFilter {
 public:
-    GrayscaleFilter() { }
-    virtual ~GrayscaleFilter() { }
+    GrayscaleFilter() = default;
+    virtual ~GrayscaleFilter() = default;
 
     virtual char const* class_name() const override { return "GrayscaleFilter"; }
 

Userland/Libraries/LibGfx/Filters/InvertFilter.h

@@ -12,8 +12,8 @@ namespace Gfx {
 
 class InvertFilter : public ColorFilter {
 public:
-    InvertFilter() { }
-    virtual ~InvertFilter() { }
+    InvertFilter() = default;
+    virtual ~InvertFilter() = default;
 
     virtual char const* class_name() const override { return "InvertFilter"; }
 

Userland/Libraries/LibGfx/Filters/LaplacianFilter.h

@@ -12,8 +12,8 @@ namespace Gfx {
 
 class LaplacianFilter : public GenericConvolutionFilter<3> {
 public:
-    LaplacianFilter() { }
-    virtual ~LaplacianFilter() { }
+    LaplacianFilter() = default;
+    virtual ~LaplacianFilter() = default;
 
     virtual const char* class_name() const override { return "LaplacianFilter"; }
 };

Userland/Libraries/LibGfx/Filters/SepiaFilter.h

@@ -18,7 +18,7 @@ public:
         : m_amount(amount)
     {
     }
-    virtual ~SepiaFilter() { }
+    virtual ~SepiaFilter() = default;
 
     virtual char const* class_name() const override { return "SepiaFilter"; }
 

Userland/Libraries/LibGfx/Filters/SharpenFilter.h

@@ -12,8 +12,8 @@ namespace Gfx {
 
 class SharpenFilter : public GenericConvolutionFilter<3> {
 public:
-    SharpenFilter() { }
-    virtual ~SharpenFilter() { }
+    SharpenFilter() = default;
+    virtual ~SharpenFilter() = default;
 
     virtual const char* class_name() const override { return "SharpenFilter"; }
 };

Userland/Libraries/LibGfx/Filters/SpatialGaussianBlurFilter.h

@@ -14,8 +14,8 @@ namespace Gfx {
 template<size_t N, typename = typename EnableIf<N % 2 == 1>::Type>
 class SpatialGaussianBlurFilter : public GenericConvolutionFilter<N> {
 public:
-    SpatialGaussianBlurFilter() { }
-    virtual ~SpatialGaussianBlurFilter() { }
+    SpatialGaussianBlurFilter() = default;
+    virtual ~SpatialGaussianBlurFilter() = default;
 
     virtual const char* class_name() const override { return "SpatialGaussianBlurFilter"; }
 };

Userland/Libraries/LibGfx/FontDatabase.cpp

@@ -119,10 +119,6 @@ FontDatabase::FontDatabase()
     }
 }
 
-FontDatabase::~FontDatabase()
-{
-}
-
 void FontDatabase::for_each_font(Function<void(const Gfx::Font&)> callback)
 {
     Vector<RefPtr<Gfx::Font>> fonts;

Userland/Libraries/LibGfx/FontDatabase.h

@@ -54,7 +54,7 @@ public:
 
 private:
     FontDatabase();
-    ~FontDatabase();
+    ~FontDatabase() = default;
 
     RefPtr<Typeface> get_or_create_typeface(const String& family, const String& variant);
 

Userland/Libraries/LibGfx/GIFLoader.cpp

@@ -605,7 +605,7 @@ GIFImageDecoderPlugin::GIFImageDecoderPlugin(const u8* data, size_t size)
     m_context->data_size = size;
 }
 
-GIFImageDecoderPlugin::~GIFImageDecoderPlugin() { }
+GIFImageDecoderPlugin::~GIFImageDecoderPlugin() = default;
 
 IntSize GIFImageDecoderPlugin::size()
 {

Userland/Libraries/LibGfx/ICOLoader.cpp

@@ -286,7 +286,7 @@ ICOImageDecoderPlugin::ICOImageDecoderPlugin(const u8* data, size_t size)
     m_context->data_size = size;
 }
 
-ICOImageDecoderPlugin::~ICOImageDecoderPlugin() { }
+ICOImageDecoderPlugin::~ICOImageDecoderPlugin() = default;
 
 IntSize ICOImageDecoderPlugin::size()
 {

Userland/Libraries/LibGfx/ImageDecoder.cpp

@@ -79,8 +79,4 @@ ImageDecoder::ImageDecoder(NonnullOwnPtr<ImageDecoderPlugin> plugin)
 {
 }
 
-ImageDecoder::~ImageDecoder()
-{
-}
-
 }

Userland/Libraries/LibGfx/ImageDecoder.h

@@ -27,7 +27,7 @@ struct ImageFrameDescriptor {
 
 class ImageDecoderPlugin {
 public:
-    virtual ~ImageDecoderPlugin() { }
+    virtual ~ImageDecoderPlugin() = default;
 
     virtual IntSize size() = 0;
 
@@ -42,13 +42,13 @@ public:
     virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) = 0;
 
 protected:
-    ImageDecoderPlugin() { }
+    ImageDecoderPlugin() = default;
 };
 
 class ImageDecoder : public RefCounted<ImageDecoder> {
 public:
     static RefPtr<ImageDecoder> try_create(ReadonlyBytes);
-    ~ImageDecoder();
+    ~ImageDecoder() = default;
 
     IntSize size() const { return m_plugin->size(); }
     int width() const { return size().width(); }

Userland/Libraries/LibGfx/JPGLoader.cpp

@@ -1232,9 +1232,7 @@ JPGImageDecoderPlugin::JPGImageDecoderPlugin(const u8* data, size_t size)
     m_context->huffman_stream.stream.ensure_capacity(50 * KiB);
 }
 
-JPGImageDecoderPlugin::~JPGImageDecoderPlugin()
-{
-}
+JPGImageDecoderPlugin::~JPGImageDecoderPlugin() = default;
 
 IntSize JPGImageDecoderPlugin::size()
 {

Userland/Libraries/LibGfx/Line.h

@@ -19,7 +19,7 @@ namespace Gfx {
 template<typename T>
 class Line {
 public:
-    Line() { }
+    Line() = default;
 
     Line(Point<T> a, Point<T> b)
         : m_a(a)

Userland/Libraries/LibGfx/PNGLoader.cpp

@@ -918,9 +918,7 @@ PNGImageDecoderPlugin::PNGImageDecoderPlugin(const u8* data, size_t size)
     m_context->data_size = size;
 }
 
-PNGImageDecoderPlugin::~PNGImageDecoderPlugin()
-{
-}
+PNGImageDecoderPlugin::~PNGImageDecoderPlugin() = default;
 
 IntSize PNGImageDecoderPlugin::size()
 {

Userland/Libraries/LibGfx/PNGWriter.h

@@ -19,7 +19,7 @@ public:
     static ByteBuffer encode(Gfx::Bitmap const&);
 
 private:
-    PNGWriter() { }
+    PNGWriter() = default;
 
     Vector<u8> m_data;
     void add_chunk(PNGChunk&);

Userland/Libraries/LibGfx/Painter.cpp

@@ -72,10 +72,6 @@ Painter::Painter(Gfx::Bitmap& bitmap)
     m_clip_origin = state().clip_rect;
 }
 
-Painter::~Painter()
-{
-}
-
 void Painter::fill_rect_with_draw_op(IntRect const& a_rect, Color color)
 {
     VERIFY(scale() == 1); // FIXME: Add scaling support.

Userland/Libraries/LibGfx/Painter.h

@@ -26,7 +26,7 @@ namespace Gfx {
 class Painter {
 public:
     explicit Painter(Gfx::Bitmap&);
-    ~Painter();
+    ~Painter() = default;
 
     enum class LineStyle {
         Solid,

Userland/Libraries/LibGfx/Path.h

@@ -143,7 +143,7 @@ private:
 
 class Path {
 public:
-    Path() { }
+    Path() = default;
 
     void move_to(const FloatPoint& point)
     {

Userland/Libraries/LibGfx/ShareableBitmap.h

@@ -14,7 +14,7 @@ namespace Gfx {
 
 class ShareableBitmap {
 public:
-    ShareableBitmap() { }
+    ShareableBitmap() = default;
 
     enum Tag { ConstructWithKnownGoodBitmap };
     ShareableBitmap(NonnullRefPtr<Gfx::Bitmap>, Tag);

Userland/Libraries/LibGfx/StylePainter.h

@@ -34,7 +34,7 @@ enum class FrameShape {
 // FIXME: should this be in its own header?
 class BaseStylePainter {
 public:
-    virtual ~BaseStylePainter() { }
+    virtual ~BaseStylePainter() = default;
 
     virtual void paint_button(Painter&, IntRect const&, Palette const&, ButtonStyle, bool pressed, bool hovered = false, bool checked = false, bool enabled = true, bool focused = false, bool default_button = false) = 0;
     virtual void paint_tab_button(Painter&, IntRect const&, Palette const&, bool active, bool hovered, bool enabled, bool top, bool in_active_window) = 0;
@@ -47,7 +47,7 @@ public:
     virtual void paint_simple_rect_shadow(Painter&, IntRect const&, Bitmap const& shadow_bitmap, bool shadow_includes_frame = false, bool fill_content = false) = 0;
 
 protected:
-    BaseStylePainter() { }
+    BaseStylePainter() = default;
 };
 
 class StylePainter {

Userland/Libraries/LibGfx/WindowTheme.cpp

@@ -15,8 +15,4 @@ WindowTheme& WindowTheme::current()
     return theme;
 }
 
-WindowTheme::~WindowTheme()
-{
-}
-
 }

Userland/Libraries/LibGfx/WindowTheme.h

@@ -27,7 +27,7 @@ public:
         Moving,
     };
 
-    virtual ~WindowTheme();
+    virtual ~WindowTheme() = default;
 
     static WindowTheme& current();
 
@@ -50,7 +50,7 @@ public:
     virtual float frame_alpha_hit_threshold(WindowState) const = 0;
 
 protected:
-    WindowTheme() { }
+    WindowTheme() = default;
 };
 
 }