v0.1.0 initial commit

tui/render.go

@@ -0,0 +1,84 @@
+package tui
+
+import "github.com/lixenwraith/terminal"
+
+// Default spinner frames for Region.Spinner
+var spinnerFrames = spinnerSets[SpinnerBraille]
+
+// Text renders text at position, truncates at region edge
+func (r Region) Text(x, y int, s string, fg, bg terminal.RGB, attr terminal.Attr) {
+	if y < 0 || y >= r.H {
+		return
+	}
+	col := 0
+	for _, ch := range s {
+		if x+col >= r.W {
+			break
+		}
+		if x+col >= 0 {
+			r.Cell(x+col, y, ch, fg, bg, attr)
+		}
+		col++
+	}
+}
+
+// TextStyled renders text using Style struct
+func (r Region) TextStyled(x, y int, s string, style Style) {
+	if y < 0 || y >= r.H {
+		return
+	}
+	col := 0
+	for _, ch := range s {
+		if x+col >= r.W {
+			break
+		}
+		if x+col >= 0 {
+			r.Cell(x+col, y, ch, style.Fg, style.Bg, style.Attr)
+		}
+		col++
+	}
+}
+
+// TextRight renders text right-aligned on row
+func (r Region) TextRight(y int, s string, fg, bg terminal.RGB, attr terminal.Attr) {
+	x := r.W - RuneLen(s)
+	r.Text(x, y, s, fg, bg, attr)
+}
+
+// TextCenter renders text centered on row
+func (r Region) TextCenter(y int, s string, fg, bg terminal.RGB, attr terminal.Attr) {
+	x := (r.W - RuneLen(s)) / 2
+	r.Text(x, y, s, fg, bg, attr)
+}
+
+// TextBlock renders wrapped text within region bounds, returns number of lines rendered
+func (r Region) TextBlock(x, y int, text string, fg, bg terminal.RGB, attr terminal.Attr) int {
+	if x >= r.W || y >= r.H || text == "" {
+		return 0
+	}
+
+	availW := r.W - x
+	if availW < 1 {
+		return 0
+	}
+
+	lines := WrapText(text, availW)
+	rendered := 0
+
+	for i, line := range lines {
+		lineY := y + i
+		if lineY >= r.H {
+			break
+		}
+		r.Text(x, lineY, line, fg, bg, attr)
+		rendered++
+	}
+
+	return rendered
+}
+
+// TextBlockStyled renders wrapped text using Style struct, returns number of lines rendered
+func (r Region) TextBlockStyled(x, y int, text string, style Style) int {
+	return r.TextBlock(x, y, text, style.Fg, style.Bg, style.Attr)
+}
+