Theme.h

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#pragma once
 
#include <DirectXMath.h>
#include <string>
 
namespace z8::ui {
 
enum class WidgetVisualState {
  Normal,
  Hovered,
  Pressed,
  Selected,
  Disabled,
  Focused
};
 
struct StateColorStyle {
  DirectX::XMFLOAT4 Normal;
  DirectX::XMFLOAT4 Hovered;
  DirectX::XMFLOAT4 Pressed;
  DirectX::XMFLOAT4 Selected;
  DirectX::XMFLOAT4 Disabled;
  DirectX::XMFLOAT4 Focused;
 
  const DirectX::XMFLOAT4 &Resolve(WidgetVisualState state) const;
};
 
struct SpacingStyle {
  inline static constexpr float ExtraSmall = 2.0f;
  inline static constexpr float Small = 4.0f;
  inline static constexpr float Medium = 6.0f;
  inline static constexpr float Large = 8.0f;
};
 
struct RectStyle {
  DirectX::XMFLOAT4 Color;
  DirectX::XMFLOAT4 BorderColor;
  float BorderWidth = 0.0f;
  float Margin = SpacingStyle::ExtraSmall;
  float Padding = SpacingStyle::ExtraSmall;
  float MinWidth = 30.0f;
  float MinHeight = 24.0f;
  float CornerRadius = 0.0f;
};
 
struct TextStyle {
  DirectX::XMFLOAT4 Color;
  DirectX::XMFLOAT4 MutedColor;
  DirectX::XMFLOAT4 DisabledColor;
  std::wstring FontFamily = L"Microsoft YaHei";
  float FontSize = 14.0f;
  float SmallFontSize = 12.0f;
  float HeadingFontSize = 15.0f;
  float LineHeight = 20.0f;
};
 
struct IconStyle {
  StateColorStyle Color;
  float SmallSize = 12.0f;
  float NormalSize = 16.0f;
  float LargeSize = 20.0f;
};
 
struct ButtonStyle {
  StateColorStyle BackgroundColor;
  StateColorStyle ForegroundColor;
  DirectX::XMFLOAT4 BorderColor;
  float BorderWidth = 0.0f;
  float ControlHeight = 24.0f;
  float IconButtonSize = 28.0f;
  float CornerRadius = 2.0f;
  float ContentPadding = SpacingStyle::Small;
};
 
struct ToggleStyle {
  StateColorStyle IndicatorColor;
  StateColorStyle ForegroundColor;
  DirectX::XMFLOAT4 BorderColor;
  DirectX::XMFLOAT4 FocusedBorderColor;
  float BorderWidth = 1.0f;
  float ControlHeight = 24.0f;
  float IndicatorSize = 14.0f;
  float CornerRadius = 2.0f;
  float ContentGap = SpacingStyle::Medium;
};
 
struct SliderStyle {
  DirectX::XMFLOAT4 TrackColor;
  DirectX::XMFLOAT4 FillColor;
  StateColorStyle ThumbColor;
  float ControlHeight = 24.0f;
  float MinimumWidth = 96.0f;
  float TrackThickness = 4.0f;
  float ThumbSize = 12.0f;
  float CornerRadius = 2.0f;
};
 
struct TextInputStyle {
  StateColorStyle BackgroundColor;
  StateColorStyle ForegroundColor;
  DirectX::XMFLOAT4 PlaceholderColor;
  DirectX::XMFLOAT4 BorderColor;
  DirectX::XMFLOAT4 FocusedBorderColor;
  DirectX::XMFLOAT4 CaretColor;
  float ControlHeight = 24.0f;
  float MinimumWidth = 120.0f;
  float ContentPadding = SpacingStyle::Medium;
  float BorderWidth = 1.0f;
  float CaretWidth = 1.0f;
  float CornerRadius = 2.0f;
};
 
struct TreeViewStyle {
  StateColorStyle RowColor;
  StateColorStyle ForegroundColor;
  StateColorStyle IconColor;
  float RowHeight = 24.0f;
  float Indent = 12.0f;
  float IconSize = 12.0f;
  float ContentGap = SpacingStyle::Small;
};
 
struct MenuStyle {
  StateColorStyle BackgroundColor;
  StateColorStyle ForegroundColor;
  DirectX::XMFLOAT4 PopupColor;
  DirectX::XMFLOAT4 PopupBorderColor;
  float MenuBarHeight = 28.0f;
  float ItemHeight = 24.0f;
  float PopupWidth = 184.0f;
  float HorizontalPadding = SpacingStyle::Medium;
  float PopupPadding = SpacingStyle::ExtraSmall;
  float IconSize = 12.0f;
  float BorderWidth = 1.0f;
  float CornerRadius = 2.0f;
};
 
struct ToolBarStyle {
  DirectX::XMFLOAT4 Color;
  DirectX::XMFLOAT4 BorderColor;
  float Height = 36.0f;
  float Padding = SpacingStyle::Small;
  float BorderWidth = 1.0f;
};
 
struct DockStyle {
  DirectX::XMFLOAT4 PreviewColor;
  DirectX::XMFLOAT4 PreviewBorderColor;
  float PreviewBorderWidth = 2.0f;
};
 
struct TabStyle {
  StateColorStyle BackgroundColor;
  StateColorStyle ForegroundColor;
  StateColorStyle IconColor;
  DirectX::XMFLOAT4 AccentColor;
  DirectX::XMFLOAT4 SeparatorColor;
  float Height = 28.0f;
  float MinWidth = 72.0f;
  float MaxWidth = 240.0f;
  float IconSize = 16.0f;
  float IconMargin = SpacingStyle::Medium;
  float FixedContentWidth = 48.0f;
  float AccentHeight = 2.0f;
  float CornerRadius = 0.0f;
};
 
struct ScrollBarStyle {
  DirectX::XMFLOAT4 TrackColor;
  StateColorStyle ThumbColor;
  float Thickness = 12.0f;
  float ThumbInset = 3.0f;
  float MinimumThumbLength = 24.0f;
  float CornerRadius = 2.0f;
};
 
struct PanelStyle : RectStyle {
  DirectX::XMFLOAT4 TitleColor;
  DirectX::XMFLOAT4 TitleActiveColor;
  DirectX::XMFLOAT4 TitleTextColor;
  DirectX::XMFLOAT4 ContentSeparatorColor;
  float TitleHeight = 28.0f;
  float ContentPadding = SpacingStyle::Medium;
  float ContentSeparatorWidth = 1.0f;
  float ResizeBorder = 6.0f;
};
 
struct DemoStyle {
  DirectX::XMFLOAT4 RowColor;
  DirectX::XMFLOAT4 AlternateRowColor;
  DirectX::XMFLOAT4 SelectedRowColor;
  float PanelWidth = 360.0f;
  float PanelHeight = 320.0f;
  float RowHeight = 28.0f;
  float RowMargin = SpacingStyle::ExtraSmall;
  float ToolbarHeight = 36.0f;
  float LeftPanelWidth = 260.0f;
  float RightPanelWidth = 300.0f;
  float BottomPanelHeight = 180.0f;
};
 
struct Theme {
  RectStyle Rect;
  TextStyle Text;
  IconStyle Icon;
  ButtonStyle Button;
  ToggleStyle Toggle;
  SliderStyle Slider;
  TextInputStyle TextInput;
  TreeViewStyle TreeView;
  MenuStyle Menu;
  ToolBarStyle ToolBar;
  DockStyle Dock;
  TabStyle Tab;
  ScrollBarStyle ScrollBar;
  PanelStyle Panel;
  DemoStyle Demo;
 
  static const Theme &Default() { return UnrealEditor(); }
  static const Theme &UnrealEditor();
};
 
} // namespace z8::ui