// Copyright 2016 Hajime Hoshi
//
// 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 ui

// TODO: Use golang.org/x/sys/windows (NewLazyDLL) instead of cgo.

// #cgo LDFLAGS: -lgdi32
//
// #include <windows.h>
//
// static int getCaptionHeight() {
//   return GetSystemMetrics(SM_CYCAPTION);
// }
import "C"

func glfwScale() float64 {
	// This function must be called on the main thread.
	return currentUI.deviceScale.Get()
}

func adjustWindowPosition(x, y int) (int, int) {
	// As the video width/height might be wrong,
	// adjust x/y at least to enable to handle the window (#328)
	if x < 0 {
		x = 0
	}
	t := int(C.getCaptionHeight())
	if y < t {
		y = t
	}
	return x, y
}