themes and styles

2026-03-08 15:31:17 +02:00
parent e37a67bc99
commit 1c2fc30127
39 changed files with 2693 additions and 199 deletions
@@ -0,0 +1,95 @@
+package world
+
+import (
+	"image"
+	"image/color"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+type bgScaleTheme struct {
+	img       image.Image
+	scaleMode BackgroundScaleMode
+}
+
+func (t bgScaleTheme) ID() string   { return "bgscale" }
+func (t bgScaleTheme) Name() string { return "bgscale" }
+
+func (t bgScaleTheme) BackgroundColor() color.Color { return color.RGBA{A: 255} }
+func (t bgScaleTheme) BackgroundImage() image.Image { return t.img }
+
+func (t bgScaleTheme) BackgroundTileMode() BackgroundTileMode     { return BackgroundTileNone }
+func (t bgScaleTheme) BackgroundScaleMode() BackgroundScaleMode   { return t.scaleMode }
+func (t bgScaleTheme) BackgroundAnchorMode() BackgroundAnchorMode { return BackgroundAnchorViewport }
+
+func (t bgScaleTheme) PointStyle() Style {
+	return Style{FillColor: color.RGBA{A: 255}, PointRadiusPx: 2}
+}
+func (t bgScaleTheme) LineStyle() Style {
+	return Style{StrokeColor: color.RGBA{A: 255}, StrokeWidthPx: 1}
+}
+func (t bgScaleTheme) CircleStyle() Style {
+	return Style{FillColor: color.RGBA{A: 255}, StrokeColor: color.RGBA{A: 255}, StrokeWidthPx: 1}
+}
+
+func (t bgScaleTheme) PointClassOverride(PointClassID) (StyleOverride, bool) {
+	return StyleOverride{}, false
+}
+func (t bgScaleTheme) LineClassOverride(LineClassID) (StyleOverride, bool) {
+	return StyleOverride{}, false
+}
+func (t bgScaleTheme) CircleClassOverride(CircleClassID) (StyleOverride, bool) {
+	return StyleOverride{}, false
+}
+
+func TestRender_BackgroundScaleNone_UsesDrawImage(t *testing.T) {
+	t.Parallel()
+
+	w := NewWorld(10, 10)
+	w.resetGrid(2 * SCALE)
+
+	img := image.NewRGBA(image.Rect(0, 0, 4, 4))
+	w.SetTheme(bgScaleTheme{img: img, scaleMode: BackgroundScaleNone})
+
+	params := RenderParams{
+		ViewportWidthPx:  10,
+		ViewportHeightPx: 10,
+		MarginXPx:        2,
+		MarginYPx:        2,
+		CameraXWorldFp:   5 * SCALE,
+		CameraYWorldFp:   5 * SCALE,
+		CameraZoom:       1.0,
+	}
+
+	d := &fakePrimitiveDrawer{}
+	require.NoError(t, w.Render(d, params))
+
+	require.NotEmpty(t, d.CommandsByName("DrawImage"))
+	require.Empty(t, d.CommandsByName("DrawImageScaled"))
+}
+
+func TestRender_BackgroundScaleFit_UsesDrawImageScaled(t *testing.T) {
+	t.Parallel()
+
+	w := NewWorld(10, 10)
+	w.resetGrid(2 * SCALE)
+
+	img := image.NewRGBA(image.Rect(0, 0, 4, 4))
+	w.SetTheme(bgScaleTheme{img: img, scaleMode: BackgroundScaleFit})
+
+	params := RenderParams{
+		ViewportWidthPx:  10,
+		ViewportHeightPx: 10,
+		MarginXPx:        2,
+		MarginYPx:        2,
+		CameraXWorldFp:   5 * SCALE,
+		CameraYWorldFp:   5 * SCALE,
+		CameraZoom:       1.0,
+	}
+
+	d := &fakePrimitiveDrawer{}
+	require.NoError(t, w.Render(d, params))
+
+	require.NotEmpty(t, d.CommandsByName("DrawImageScaled"))
+}