impl_mac.go (1345B)
1 // Copyright 2018 The Ebiten Authors 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 // +build darwin 16 // +build !ios 17 18 package devicescale 19 20 // #cgo CFLAGS: -x objective-c 21 // #cgo LDFLAGS: -framework AppKit 22 // 23 // #import <AppKit/AppKit.h> 24 // 25 // static float scaleAt(int x, int y) { 26 // // On macOS, the direction of Y axis is inverted from GLFW monitors (#807). 27 // // This is an inverse function of _glfwTransformYNS in GLFW (#1113). 28 // y = CGDisplayBounds(CGMainDisplayID()).size.height - y - 1; 29 // 30 // NSArray<NSScreen*>* screens = [NSScreen screens]; 31 // for (NSScreen* screen in screens) { 32 // if (NSPointInRect(NSMakePoint(x, y), [screen frame])) { 33 // return [screen backingScaleFactor]; 34 // } 35 // } 36 // return 0; 37 // } 38 import "C" 39 40 func impl(x, y int) float64 { 41 return float64(C.scaleAt(C.int(x), C.int(y))) 42 }