Start work on faces panel

kittens/choose_fonts/faces.go

@@ -0,0 +1,69 @@
+package choose_fonts
+
+import (
+	"fmt"
+	"kitty/tools/tui/loop"
+	"kitty/tools/utils"
+)
+
+var _ = fmt.Print
+
+type faces struct {
+	handler *handler
+
+	family   string
+	settings struct {
+		font_family, bold_font, italic_font, bold_italic_font string
+	}
+}
+
+func (self *faces) draw_screen() (err error) {
+	self.handler.lp.SetCursorVisible(false)
+	sz, _ := self.handler.lp.ScreenSize()
+	lines := []string{self.handler.format_title(self.family, 0), ""}
+	_, _, str := self.handler.render_lines.InRectangle(lines, 0, 0, int(sz.WidthCells), int(sz.HeightCells), &self.handler.mouse_state, self.on_click)
+	self.handler.lp.QueueWriteString(str)
+	return
+}
+
+func (self *faces) initialize(h *handler) (err error) {
+	self.handler = h
+	return
+}
+
+func (self *faces) on_wakeup() error {
+	return self.handler.draw_screen()
+}
+
+func (self *faces) on_click(id string) (err error) {
+	return
+}
+
+func (self *faces) on_key_event(event *loop.KeyEvent) (err error) {
+	if event.MatchesPressOrRepeat("esc") {
+		event.Handled = true
+		self.handler.current_pane = &self.handler.listing
+		return self.handler.draw_screen()
+	}
+	return
+}
+
+func (self *faces) on_text(text string, from_key_event bool, in_bracketed_paste bool) (err error) {
+	return
+}
+
+func (self *faces) on_enter(family string) error {
+	if family != "" {
+		self.family = family
+		r := self.handler.listing.resolved_faces_from_kitty_conf
+		d := func(conf ResolvedFace, setting *string, defval string) {
+			*setting = utils.IfElse(family == conf.Family, conf.Spec, defval)
+		}
+		d(r.Font_family, &self.settings.font_family, family)
+		d(r.Bold_font, &self.settings.bold_font, "auto")
+		d(r.Italic_font, &self.settings.italic_font, "auto")
+		d(r.Bold_italic_font, &self.settings.bold_italic_font, "auto")
+	}
+	self.handler.current_pane = self
+	return self.handler.draw_screen()
+}

kittens/choose_fonts/list.go

@@ -30,11 +30,12 @@ type FontList struct {
 	preview_cache_mutex            sync.Mutex
 }
 
-func (self *FontList) initialize(h *handler) {
+func (self *FontList) initialize(h *handler) error {
 	self.handler = h
 	self.preview_cache = make(map[preview_cache_key]string)
 	self.rl = readline.New(h.lp, readline.RlInit{DontMarkPrompts: true, Prompt: "Family: "})
 	self.variable_data_requested_for = utils.NewSet[string](256)
+	return nil
 }
 
 func (self *FontList) draw_search_bar() {
@@ -58,16 +59,18 @@ func center_string(x string, width int) string {
 	return strings.Repeat(" ", utils.Max(0, spaces)) + x
 }
 
+func (self *handler) format_title(title string, start_x int) string {
+	sz, _ := self.lp.ScreenSize()
+	return self.lp.SprintStyled("fg=green bold", center_string(title, int(sz.WidthCells)-start_x))
+}
+
 func (self *FontList) draw_family_summary(start_x int, sz loop.ScreenSize) (err error) {
 	lp := self.handler.lp
 	family := self.family_list.CurrentFamily()
 	if family == "" || int(sz.WidthCells) < start_x+2 {
 		return nil
 	}
-	lines := []string{
+	lines := []string{self.handler.format_title(family, start_x), ""}
-		lp.SprintStyled("fg=green bold", center_string(family, int(sz.WidthCells)-start_x)),
-		"",
-	}
 	width := int(sz.WidthCells) - start_x - 1
 	add_line := func(x string) {
 		lines = append(lines, style.WrapTextAsLines(x, width, style.WrapOptions{})...)
@@ -157,9 +160,10 @@ func (self *FontList) draw_preview(x, y int, sz loop.ScreenSize) (err error) {
 	return
 }
 
-func (self *FontList) on_wakeup() {
+func (self *FontList) on_wakeup() error {
 	self.family_list.UpdateFamilies(utils.StableSortWithKey(utils.Keys(self.fonts), strings.ToLower))
 	self.family_list.SelectFamily(self.resolved_faces_from_kitty_conf.Font_family.Family)
+	return self.handler.draw_screen()
 }
 
 func (self *FontList) draw_screen() (err error) {
@@ -235,6 +239,14 @@ func (self *FontList) next(delta int, allow_wrapping bool) {
 }
 
 func (self *FontList) on_key_event(event *loop.KeyEvent) (err error) {
+	if event.MatchesPressOrRepeat("enter") {
+		event.Handled = true
+		if family := self.family_list.CurrentFamily(); family != "" {
+			return self.handler.faces.on_enter(family)
+		}
+		self.handler.lp.Beep()
+		return
+	}
 	if event.MatchesPressOrRepeat("esc") {
 		event.Handled = true
 		if self.rl.AllText() != "" {

kittens/choose_fonts/ui.go

@@ -30,6 +30,15 @@ type TextStyle struct {
 	Background string  `json:"background"`
 }
 
+type pane interface {
+	initialize(*handler) error
+	draw_screen() error
+	on_wakeup() error
+	on_key_event(event *loop.KeyEvent) error
+	on_text(text string, from_key_event bool, in_bracketed_paste bool) error
+	on_click(id string) error
+}
+
 type handler struct {
 	lp                   *loop.Loop
 	state                State
@@ -43,6 +52,10 @@ type handler struct {
 	temp_dir             string
 
 	listing FontList
+	faces   faces
+
+	panes        []pane
+	current_pane pane
 }
 
 func (h *handler) set_worker_error(err error) {
@@ -62,7 +75,12 @@ func (h *handler) initialize() (err error) {
 	h.lp.SetCursorVisible(false)
 	h.lp.OnQueryResponse = h.on_query_response
 	h.lp.QueryTerminal("font_size", "dpi_x", "dpi_y", "foreground", "background")
-	h.listing.initialize(h)
+	h.panes = []pane{&h.listing, &h.faces}
+	for _, pane := range h.panes {
+		if err = pane.initialize(h); err != nil {
+			return err
+		}
+	}
 	// dont use /tmp as it may be mounted in RAM, Le Sigh
 	if h.temp_dir, err = os.MkdirTemp(utils.CacheDir(), "kitten-choose-fonts-*"); err != nil {
 		return
@@ -136,11 +154,10 @@ func (h *handler) draw_screen() (err error) {
 	h.lp.ClearScreenButNotGraphics()
 	h.lp.AllowLineWrapping(false)
 	h.mouse_state.ClearCellRegions()
-	switch h.state {
+	if h.current_pane == nil {
-	case SCANNING_FAMILIES:
 		h.lp.Println("Scanning system for fonts, please wait...")
-	case LISTING_FAMILIES:
+	} else {
-		return h.listing.draw_screen()
+		return h.current_pane.draw_screen()
 	}
 	return
 }
@@ -149,12 +166,10 @@ func (h *handler) on_wakeup() (err error) {
 	if err = h.get_worker_error(); err != nil {
 		return
 	}
-	switch h.state {
+	if h.current_pane == nil {
-	case SCANNING_FAMILIES:
+		h.current_pane = &h.listing
-		h.state = LISTING_FAMILIES
-		h.listing.on_wakeup()
 	}
-	return h.draw_screen()
+	return h.listing.on_wakeup()
 }
 
 func (h *handler) on_mouse_event(event *loop.MouseEvent) (err error) {
@@ -179,17 +194,15 @@ func (h *handler) on_key_event(event *loop.KeyEvent) (err error) {
 		event.Handled = true
 		return fmt.Errorf("canceled by user")
 	}
-	switch h.state {
+	if h.current_pane != nil {
-	case LISTING_FAMILIES:
+		err = h.current_pane.on_key_event(event)
-		return h.listing.on_key_event(event)
 	}
 	return
 }
 
 func (h *handler) on_text(text string, from_key_event bool, in_bracketed_paste bool) (err error) {
-	switch h.state {
+	if h.current_pane != nil {
-	case LISTING_FAMILIES:
+		err = h.current_pane.on_text(text, from_key_event, in_bracketed_paste)
-		return h.listing.on_text(text, from_key_event, in_bracketed_paste)
 	}
 	return
 }

tools/utils/strings.go

@@ -167,3 +167,5 @@ func RuneOffsetsToByteOffsets(text string) func(int) int {
 		return self.byte_offset
 	}
 }
+
+func Repr(x any) string { return fmt.Sprintf("%#v", x) }