mirror of
https://github.com/hajimehoshi/ebiten.git
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64 lines
1.5 KiB
Go
64 lines
1.5 KiB
Go
// Copyright 2016 Hajime Hoshi
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !js
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package ui
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// TODO: Use golang.org/x/sys/windows (NewLazyDLL) instead of cgo.
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// #cgo LDFLAGS: -lgdi32
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//
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// #include <windows.h>
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//
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// static char* getDPI(int* dpi) {
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// HDC dc = GetWindowDC(0);
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// *dpi = GetDeviceCaps(dc, LOGPIXELSX);
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// if (!ReleaseDC(0, dc)) {
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// return "ReleaseDC failed";
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// }
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// return "";
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// }
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//
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// static int getCaptionHeight() {
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// return GetSystemMetrics(SM_CYCAPTION);
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// }
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//
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import "C"
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func deviceScale() float64 {
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dpi := C.int(0)
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if errmsg := C.GoString(C.getDPI(&dpi)); errmsg != "" {
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panic(errmsg)
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}
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return float64(dpi) / 96
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}
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func glfwScale() float64 {
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return deviceScale()
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}
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func adjustWindowPosition(x, y int) (int, int) {
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// As the video width/height might be wrong,
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// adjust x/y at least to enable to handle the window (#328)
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if x < 0 {
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x = 0
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}
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t := int(C.getCaptionHeight())
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if y < t {
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y = t
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}
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return x, y
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}
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