Theming

Walker has support for custom theming. Themes are separated into 2 files: a layout file and a style file, f.e. "kanagawa.json" and "kanagawa.css". If not present, the default css/layout will be used.

Default themes will be written to ~/.config/walker/themes/ so you can use those for reference.

Walker will detect gsettings color-scheme and set dark or light class on #window if the setting contains dark/light.

type UI struct {
	Anchors         Anchors `mapstructure:"anchors"`
	Fullscreen      bool    `mapstructure:"fullscreen"`
	IgnoreExclusive bool    `mapstructure:"ignore_exclusive"`
	Window          Window  `mapstructure:"window"`

	// internal
	AlignMap        map[string]gtk.Align         `mapstructure:"-"`
	IconSizeMap     map[string]gtk.IconSize      `mapstructure:"-"`
	IconSizeIntMap  map[string]int               `mapstructure:"-"`
	JustifyMap      map[string]gtk.Justification `mapstructure:"-"`
	OrientationMap  map[string]gtk.Orientation   `mapstructure:"-"`
	ScrollPolicyMap map[string]gtk.PolicyType    `mapstructure:"-"`
}

func (u *UI) InitUnitMaps() {
	u.AlignMap = make(map[string]gtk.Align)
	u.AlignMap["fill"] = gtk.AlignFill
	u.AlignMap["start"] = gtk.AlignStart
	u.AlignMap["end"] = gtk.AlignEnd
	u.AlignMap["center"] = gtk.AlignCenter
	u.AlignMap["baseline"] = gtk.AlignBaseline
	u.AlignMap["baseline_fill"] = gtk.AlignBaselineFill
	u.AlignMap["baseline_center"] = gtk.AlignBaselineCenter

	u.IconSizeMap = make(map[string]gtk.IconSize)
	u.IconSizeMap["inherit"] = gtk.IconSizeInherit
	u.IconSizeMap["normal"] = gtk.IconSizeNormal
	u.IconSizeMap["large"] = gtk.IconSizeLarge

	u.IconSizeIntMap = make(map[string]int)
	u.IconSizeIntMap["inherit"] = -1
	u.IconSizeIntMap["normal"] = 16
	u.IconSizeIntMap["large"] = 32
	u.IconSizeIntMap["larger"] = 64
	u.IconSizeIntMap["largest"] = 128

	u.JustifyMap = make(map[string]gtk.Justification)
	u.JustifyMap["left"] = gtk.JustifyLeft
	u.JustifyMap["right"] = gtk.JustifyRight
	u.JustifyMap["center"] = gtk.JustifyCenter
	u.JustifyMap["fill"] = gtk.JustifyFill

	u.OrientationMap = make(map[string]gtk.Orientation)
	u.OrientationMap["horizontal"] = gtk.OrientationHorizontal
	u.OrientationMap["vertical"] = gtk.OrientationVertical

	u.ScrollPolicyMap = make(map[string]gtk.PolicyType)
	u.ScrollPolicyMap["never"] = gtk.PolicyNever
	u.ScrollPolicyMap["always"] = gtk.PolicyAlways
	u.ScrollPolicyMap["automatic"] = gtk.PolicyAutomatic
	u.ScrollPolicyMap["external"] = gtk.PolicyExternal
}

type Widget struct {
	CssClasses []string `mapstructure:"css_classes"`
	HAlign     string   `mapstructure:"h_align"`
	HExpand    bool     `mapstructure:"h_expand"`
	Height     int      `mapstructure:"height"`
	Hide       bool     `mapstructure:"hide"`
	Margins    Margins  `mapstructure:"margins"`
	Name       string   `mapstructure:"name"`
	Opacity    float64  `mapstructure:"opacity"`
	VAlign     string   `mapstructure:"v_align"`
	VExpand    bool     `mapstructure:"h_expand"`
	Width      int      `mapstructure:"width"`
}

type BoxWidget struct {
	Widget      `mapstructure:",squash"`
	Orientation string `mapstructure:"orientation"`
	Spacing     int    `mapstructure:"spacing"`
}

type LabelWidget struct {
	Widget  `mapstructure:",squash"`
	Justify string  `mapstructure:"justify"`
	XAlign  float32 `mapstructure:"x_align"`
	YAlign  float32 `mapstructure:"y_align"`
	Wrap    bool    `mapstructure:"wrap"`
}

type ImageWidget struct {
	Widget    `mapstructure:",squash"`
	Icon      string `mapstructure:"icon"`
	IconSize  string `mapstructure:"icon_size"`
	PixelSize int    `mapstructure:"pixel_size"`
	Theme     string `mapstructure:"theme"`
}

type Anchors struct {
	Bottom bool `mapstructure:"bottom"`
	Left   bool `mapstructure:"left"`
	Right  bool `mapstructure:"right"`
	Top    bool `mapstructure:"top"`
}

type Margins struct {
	Bottom int `mapstructure:"bottom"`
	End    int `mapstructure:"end"`
	Start  int `mapstructure:"start"`
	Top    int `mapstructure:"top"`
}

type Window struct {
	Widget `mapstructure:",squash"`
	Box    Box `mapstructure:"box"`
}

type Box struct {
	BoxWidget `mapstructure:",squash"`
	Scroll    Scroll        `mapstructure:"scroll"`
	AiScroll  AiScroll      `mapstructure:"ai_scroll"`
	Revert    bool          `mapstructure:"revert"`
	Search    SearchWrapper `mapstructure:"search"`
	Bar       BarWrapper    `mapstructure:"bar"`
}

type AiScroll struct {
	Widget           `mapstructure:",squash"`
	List             AiListWrapper `mapstructure:"list"`
	OverlayScrolling bool          `mapstructure:"overlay_scrolling"`
	HScrollbarPolicy string        `mapstructure:"h_scrollbar_policy"`
	VScrollbarPolicy string        `mapstructure:"v_scrollbar_policy"`
}

type AiListWrapper struct {
	BoxWidget `mapstructure:",squash"`
	Item      LabelWidget `mapstructure:"item"`
}

type BarWrapper struct {
	BoxWidget `mapstructure:",squash"`
	Position  string          `mapstructure:"position"`
	Entry     BarEntryWrapper `mapstructure:"entry"`
}

type BarEntryWrapper struct {
	BoxWidget `mapstructure:",squash"`
	Icon      ImageWidget `mapstructure:"icon"`
	Label     LabelWidget `mapstructure:"label"`
}

type Scroll struct {
	Widget           `mapstructure:",squash"`
	List             ListWrapper `mapstructure:"list"`
	OverlayScrolling bool        `mapstructure:"overlay_scrolling"`
	HScrollbarPolicy string      `mapstructure:"h_scrollbar_policy"`
	VScrollbarPolicy string      `mapstructure:"v_scrollbar_policy"`
}

type SearchWrapper struct {
	BoxWidget `mapstructure:",squash"`
	Revert    bool          `mapstructure:"revert"`
	Input     SearchWidget  `mapstructure:"input"`
	Prompt    PromptWidget  `mapstructure:"prompt"`
	Clear     ImageWidget   `mapstructure:"clear"`
	Spinner   SpinnerWidget `mapstructure:"spinner"`
}

type PromptWidget struct {
	LabelWidget `mapstructure:",squash"`
	ImageWidget `mapstructure:",squash"`
	Text        string `mapstructure:"text"`
	Icon        string `mapstructure:"icon"`
}

type SearchWidget struct {
	Widget `mapstructure:",squash"`
}

type SpinnerWidget struct {
	Widget `mapstructure:",squash"`
}

type ListWrapper struct {
	AlwaysShow  bool           `mapstructure:"always_show"`
	Grid        bool           `mapstructure:"grid"`
	Item        ListItemWidget `mapstructure:"item"`
	MarkerColor string         `mapstructure:"marker_color"`
	MaxHeight   int            `mapstructure:"max_height"`
	MaxWidth    int            `mapstructure:"max_width"`
	MinHeight   int            `mapstructure:"min_height"`
	MinWidth    int            `mapstructure:"min_width"`
	Orientation string         `mapstructure:"orientation"`
	Placeholder LabelWidget    `mapstructure:"placeholder"`
	Widget      `mapstructure:",squash"`
}

type ListItemWidget struct {
	BoxWidget       `mapstructure:",squash"`
	Revert          bool                  `mapstructure:"revert"`
	ActivationLabel ActivationLabelWidget `mapstructure:"activation_label"`
	Icon            ImageWidget           `mapstructure:"icon"`
	Text            TextWrapper           `mapstructure:"text"`
}

type ActivationLabelWidget struct {
	LabelWidget  `mapstructure:",squash"`
	Overlay      bool `mapstructure:"overlay"`
	HideModifier bool `mapstructure:"hide_modifier"`
}

type TextWrapper struct {
	BoxWidget `mapstructure:",squash"`
	Label     LabelWidget `mapstructure:"label"`
	Revert    bool        `mapstructure:"revert"`
	Sub       LabelWidget `mapstructure:"sub"`
}