From 62dffe5405fb7cd666598073a05d4b23abd320cb Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Wed, 23 Mar 2016 00:44:16 +0900
Subject: [PATCH] Add ebiten.ScreenScale() (#191)

---
 examples/windowsize/main.go | 2 +-
 internal/ui/ui_glfw.go      | 4 ++++
 internal/ui/ui_js.go        | 4 ++++
 run.go                      | 5 +++++
 4 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/examples/windowsize/main.go b/examples/windowsize/main.go
index c7a7a6206..dd773f47e 100644
--- a/examples/windowsize/main.go
+++ b/examples/windowsize/main.go
@@ -32,7 +32,6 @@ const (
 
 var (
 	gophersImage *ebiten.Image
-	screenScale  = initScreenScale
 	keyStates    = map[ebiten.Key]int{
 		ebiten.KeyUp:    0,
 		ebiten.KeyDown:  0,
@@ -51,6 +50,7 @@ func update(screen *ebiten.Image) error {
 		keyStates[key]++
 	}
 	d := 0
+	screenScale := ebiten.ScreenScale()
 	switch screenScale {
 	case 1:
 		d = 32
diff --git a/internal/ui/ui_glfw.go b/internal/ui/ui_glfw.go
index 5a2764c12..45474dc79 100644
--- a/internal/ui/ui_glfw.go
+++ b/internal/ui/ui_glfw.go
@@ -97,6 +97,10 @@ func SetScreenScale(scale int) bool {
 	return currentUI.setScreenSize(currentUI.width, currentUI.height, scale)
 }
 
+func ScreenScale() int {
+	return currentUI.scale
+}
+
 func ActualScale() int {
 	return currentUI.actualScale()
 }
diff --git a/internal/ui/ui_js.go b/internal/ui/ui_js.go
index 48a13689d..6b4f22650 100644
--- a/internal/ui/ui_js.go
+++ b/internal/ui/ui_js.go
@@ -59,6 +59,10 @@ func SetScreenScale(scale int) bool {
 	return currentUI.setScreenSize(width, height, scale)
 }
 
+func ScreenScale() int {
+	return canvas.Get("dataset").Get("ebitenScale").Int()
+}
+
 func ActualScale() int {
 	return canvas.Get("dataset").Get("ebitenActualScale").Int()
 }
diff --git a/run.go b/run.go
index 891175fe3..962f1d0a0 100644
--- a/run.go
+++ b/run.go
@@ -165,3 +165,8 @@ func SetScreenScale(scale int) {
 	}
 	runContext.newScreenScale = scale
 }
+
+// ScreenScale returns the current screen scale.
+func ScreenScale() int {
+	return ui.ScreenScale()
+}