chore: import upstream snapshot with attribution

2026-07-13 12:30:31 +08:00
commit c4536f7e05
239 changed files with 23836 additions and 0 deletions
@@ -0,0 +1,111 @@
+package codeview
+
+import (
+	"image"
+	"testing"
+	"time"
+
+	"gioui.org/f32"
+	"gioui.org/io/input"
+	"gioui.org/io/key"
+	"gioui.org/io/pointer"
+	"gioui.org/layout"
+	"gioui.org/op"
+	"gioui.org/text"
+	"gioui.org/unit"
+	"gioui.org/widget/material"
+
+	"loov.dev/lensm/internal/disasm"
+	"loov.dev/lensm/internal/gui"
+	"loov.dev/lensm/internal/syntax"
+)
+
+func TestCodeUIStyleLayoutWithHelpAndSelection(t *testing.T) {
+	base := material.NewTheme()
+	base.Shaper = text.NewShaper(text.WithCollection(gui.LoadFonts("")))
+	base.TextSize = unit.Sp(12)
+	theme := gui.NewTheme(base, false)
+	state := &UI{Code: &disasm.Code{
+		Name:    "main.example",
+		File:    "main.go",
+		MaxJump: 1,
+		Insts: []disasm.Inst{
+			{Text: "MOV (R2), R1", NativeText: "mov (%r2), %r1"},
+			{Text: "ADDQ $1, R1", NativeText: "addq $1, %r1"},
+		},
+		Source: []disasm.Source{{
+			File: "main.go",
+			Blocks: []disasm.SourceBlock{{
+				LineRange: disasm.LineRange{From: 1, To: 2},
+				Lines:     []string{"func example() {", "}"},
+			}},
+		}},
+	}}
+	state.mousePosition = f32.Pt(100, 22)
+
+	var router input.Router
+	var operations op.Ops
+	newContext := func() layout.Context {
+		operations.Reset()
+		return layout.Context{
+			Ops:         &operations,
+			Source:      router.Source(),
+			Metric:      unit.Metric{PxPerDp: 1, PxPerSp: 1},
+			Now:         time.Now(),
+			Constraints: layout.Exact(image.Pt(1200, 600)),
+		}
+	}
+	copied := ""
+	style := Style{
+		UI:         state,
+		Theme:      theme,
+		Syntax:     syntax.PaletteFor(syntax.StyleGoLand, theme.Colors.SyntaxColors()),
+		ShowNative: true,
+		TextHeight: theme.TextSize,
+		CopyText: func(_ layout.Context, text string) {
+			copied = text
+		},
+	}
+	gtx := newContext()
+	if got := style.Layout(gtx).Size; got != gtx.Constraints.Max {
+		t.Fatalf("Layout size = %v, want %v", got, gtx.Constraints.Max)
+	}
+	router.Frame(gtx.Ops)
+
+	router.Queue(
+		pointer.Event{Source: pointer.Mouse, PointerID: 1, Buttons: pointer.ButtonPrimary, Kind: pointer.Press, Position: f32.Pt(100, 20)},
+		pointer.Event{Source: pointer.Mouse, PointerID: 1, Buttons: pointer.ButtonPrimary, Kind: pointer.Move, Position: f32.Pt(100, 40)},
+		pointer.Event{Source: pointer.Mouse, PointerID: 1, Buttons: pointer.ButtonPrimary, Kind: pointer.Release, Position: f32.Pt(100, 40)},
+	)
+	gtx = newContext()
+	style.Layout(gtx)
+	router.Frame(gtx.Ops)
+	if from, to, ok := state.Selection.Range(); !ok || from != 0 || to != 1 || state.Selection.View != ViewGoAsm {
+		t.Fatalf("drag selection = %#v, range %d..%d", state.Selection, from, to)
+	}
+	if !gtx.Focused(state) {
+		t.Fatal("code view did not retain keyboard focus after drag selection")
+	}
+
+	router.Queue(key.Event{Name: key.Name("C"), Modifiers: key.ModShortcut, State: key.Press})
+	gtx = newContext()
+	style.Layout(gtx)
+	router.Frame(gtx.Ops)
+	if want := "MOV (R2), R1\nADDQ $1, R1\n"; copied != want {
+		t.Fatalf("copied text = %q, want %q", copied, want)
+	}
+
+	// A fast drag past the bottom edge must clamp to the last line, not
+	// stop at the last in-range drag sample.
+	router.Queue(
+		pointer.Event{Source: pointer.Mouse, PointerID: 2, Buttons: pointer.ButtonPrimary, Kind: pointer.Press, Position: f32.Pt(100, 20)},
+		pointer.Event{Source: pointer.Mouse, PointerID: 2, Buttons: pointer.ButtonPrimary, Kind: pointer.Move, Position: f32.Pt(100, 5000)},
+		pointer.Event{Source: pointer.Mouse, PointerID: 2, Buttons: pointer.ButtonPrimary, Kind: pointer.Release, Position: f32.Pt(100, 5000)},
+	)
+	gtx = newContext()
+	style.Layout(gtx)
+	router.Frame(gtx.Ops)
+	if from, to, ok := state.Selection.Range(); !ok || from != 0 || to != len(state.Code.Insts)-1 {
+		t.Fatalf("overshoot drag selection = %#v, range %d..%d", state.Selection, from, to)
+	}
+}