ebiten/internal/devicescale/impl_js.go
2019-05-01 17:28:00 +09:00

30 lines
803 B
Go

// Copyright 2018 The Ebiten Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build js
package devicescale
import (
"syscall/js"
)
func impl(x, y int) float64 {
ratio := js.Global().Get("window").Get("devicePixelRatio").Float()
if ratio == 0 {
ratio = 1
}
return ratio
}