impl_ios.go (935B)
1 // Copyright 2016 Hajime Hoshi 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 //go:build ios 16 // +build ios 17 18 package devicescale 19 20 // #cgo CFLAGS: -x objective-c 21 // #cgo LDFLAGS: -framework Foundation -framework UIKit 22 // 23 // #import <UIKit/UIKit.h> 24 // 25 // static double devicePixelRatio() { 26 // return [[UIScreen mainScreen] nativeScale]; 27 // } 28 import "C" 29 30 func impl(x, y int) float64 { 31 return float64(C.devicePixelRatio()) 32 }