ui: basic map scroller

2026-03-06 23:29:06 +02:00
parent 29d188969b
commit 1de621c743
68 changed files with 9861 additions and 118 deletions
@@ -0,0 +1,109 @@
+package client
+
+import (
+	"testing"
+
+	"fyne.io/fyne/v2"
+	"fyne.io/fyne/v2/test"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/iliadenisov/galaxy/client/world"
+)
+
+type fakeEditor struct {
+	scale float32
+	p     world.RenderParams
+
+	forced  bool
+	updates int
+	refresh int
+}
+
+func (e *fakeEditor) CanvasScale() float32 { return e.scale }
+
+func (e *fakeEditor) UpdateParams(fn func(p *world.RenderParams)) {
+	fn(&e.p)
+	e.updates++
+}
+
+func (e *fakeEditor) RequestRefresh() { e.refresh++ }
+
+func (e *fakeEditor) ForceFullRedraw() { e.forced = true }
+
+func TestPanController_DraggedUpdatesCameraByDeltaPx(t *testing.T) {
+	t.Parallel()
+
+	fe := &fakeEditor{
+		scale: 1.0, // 1 fyne unit == 1 px for the test
+		p: world.RenderParams{
+			CameraZoom:     1.0,
+			CameraXWorldFp: 5 * world.SCALE,
+			CameraYWorldFp: 5 * world.SCALE,
+		},
+	}
+
+	pc := NewPanController(fe)
+
+	// Drag right by +3 px and down by +2 px.
+	pc.Dragged(&fyne.DragEvent{
+		Dragged: fyne.Delta{DX: 3, DY: 2},
+	})
+
+	require.Equal(t, 1, fe.updates)
+
+	// Map follows pointer => camera moves opposite to pointer delta.
+	require.Equal(t, 5*world.SCALE-3*world.SCALE, fe.p.CameraXWorldFp)
+	require.Equal(t, 5*world.SCALE-2*world.SCALE, fe.p.CameraYWorldFp)
+}
+
+func TestPanController_DraggedUsesCanvasScaleByMultiplying(t *testing.T) {
+	t.Parallel()
+
+	fe := &fakeEditor{
+		scale: 2.0, // 2 px per fyne unit
+		p: world.RenderParams{
+			CameraZoom:     1.0,
+			CameraXWorldFp: 0,
+			CameraYWorldFp: 0,
+		},
+	}
+
+	pc := NewPanController(fe)
+
+	// Dragged.DX=1 fyne unit => 2 px after scaling.
+	pc.Dragged(&fyne.DragEvent{
+		Dragged: fyne.Delta{DX: 1, DY: 0},
+	})
+
+	require.Equal(t, -2*world.SCALE, fe.p.CameraXWorldFp)
+}
+
+func TestPanController_DragEndForcesFullRedrawAndRefresh(t *testing.T) {
+	t.Parallel()
+
+	fe := &fakeEditor{
+		scale: 1.0,
+		p: world.RenderParams{
+			CameraZoom:     1.0,
+			CameraXWorldFp: 0,
+			CameraYWorldFp: 0,
+		},
+	}
+
+	pc := NewPanController(fe)
+
+	// Simulate a drag start.
+	pc.Dragged(&fyne.DragEvent{PointEvent: fyne.PointEvent{Position: fyne.Position{X: 1, Y: 1}}})
+
+	pc.DragEnd()
+	require.True(t, fe.forced)
+	require.Equal(t, 1, fe.refresh)
+}
+
+// Optional: demonstrate use of fyne/test package to ensure types are available.
+// (Not strictly needed, but keeps fyne dependency "active" in tests.)
+func TestFyneTestDriverIsUsable(t *testing.T) {
+	t.Parallel()
+	_ = test.NewApp()
+}