mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-13 22:47:26 +01:00
101 lines
2.2 KiB
Go
101 lines
2.2 KiB
Go
// Copyright 2018 The Ebiten Authors
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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 dragonfly freebsd linux netbsd openbsd solaris
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// +build !android
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package devicescale
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import (
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"os"
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"os/exec"
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"regexp"
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"strconv"
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"strings"
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)
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type desktop int
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const (
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desktopUnknown desktop = iota
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desktopGnome
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desktopCinnamon
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desktopUnity
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desktopKDE
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desktopXfce
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)
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func currentDesktop() desktop {
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tokens := strings.Split(os.Getenv("XDG_CURRENT_DESKTOP"), ":")
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switch tokens[len(tokens)-1] {
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case "GNOME":
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return desktopGnome
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case "X-Cinnamon":
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return desktopCinnamon
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case "Unity":
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return desktopUnity
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case "KDE":
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return desktopKDE
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case "XFCE":
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return desktopXfce
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default:
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return desktopUnknown
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}
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}
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var gsettingsRe = regexp.MustCompile(`\Auint32 (\d+)\s*\z`)
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func gnomeScale() float64 {
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// TODO: Should 'monitors.xml' be loaded?
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out, err := exec.Command("gsettings", "get", "org.gnome.desktop.interface", "scaling-factor").Output()
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if err != nil {
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if err == exec.ErrNotFound {
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return 0
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}
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if _, ok := err.(*exec.ExitError); ok {
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return 0
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}
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panic(err)
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}
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m := gsettingsRe.FindStringSubmatch(string(out))
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s, err := strconv.Atoi(m[1])
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if err != nil {
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return 0
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}
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return float64(s)
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}
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func impl(x, y int) float64 {
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s := -1.0
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switch currentDesktop() {
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case desktopGnome:
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// TODO: Support wayland and per-monitor scaling https://wiki.gnome.org/HowDoI/HiDpi
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s = gnomeScale()
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case desktopCinnamon:
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s = cinnamonScale()
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case desktopUnity:
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// TODO: Implement, supports per-monitor scaling
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case desktopKDE:
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// TODO: Implement, appears to support per-monitor scaling
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case desktopXfce:
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// TODO: Implement
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}
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if s <= 0 {
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s = 1
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}
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return s
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}
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