mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-28 04:38:55 +01:00
167 lines
5.1 KiB
Go
167 lines
5.1 KiB
Go
// 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.
|
|
|
|
//go:build (dragonfly || freebsd || linux || netbsd || openbsd || solaris) && !android
|
|
// +build dragonfly freebsd linux netbsd openbsd solaris
|
|
// +build !android
|
|
|
|
package glfw
|
|
|
|
import (
|
|
"fmt"
|
|
"math"
|
|
"runtime"
|
|
|
|
"github.com/hajimehoshi/ebiten/v2/internal/driver"
|
|
"github.com/hajimehoshi/ebiten/v2/internal/glfw"
|
|
"github.com/jezek/xgb"
|
|
"github.com/jezek/xgb/randr"
|
|
"github.com/jezek/xgb/xproto"
|
|
)
|
|
|
|
type videoModeScaleCacheKey struct{ X, Y int }
|
|
|
|
var videoModeScaleCache = map[videoModeScaleCacheKey]float64{}
|
|
|
|
// clearVideoModeScaleCache must be called from the main thread.
|
|
func clearVideoModeScaleCache() {
|
|
for k := range videoModeScaleCache {
|
|
delete(videoModeScaleCache, k)
|
|
}
|
|
}
|
|
|
|
// videoModeScale must be called from the main thread.
|
|
func videoModeScale(m *glfw.Monitor) float64 {
|
|
// Caching wrapper for videoModeScaleUncached as
|
|
// videoModeScaleUncached may be expensive (uses blocking calls on X connection)
|
|
// and public ScreenSizeInFullscreen API needs the videoModeScale.
|
|
monitorX, monitorY := m.GetPos()
|
|
cacheKey := videoModeScaleCacheKey{X: monitorX, Y: monitorY}
|
|
if cached, ok := videoModeScaleCache[cacheKey]; ok {
|
|
return cached
|
|
}
|
|
|
|
scale := videoModeScaleUncached(m)
|
|
videoModeScaleCache[cacheKey] = scale
|
|
return scale
|
|
}
|
|
|
|
// videoModeScaleUncached must be called from the main thread.
|
|
func videoModeScaleUncached(m *glfw.Monitor) float64 {
|
|
// TODO: if glfw/glfw#1961 gets fixed, this function may need revising.
|
|
// In case GLFW decides to switch to returning logical pixels, we can just return 1.
|
|
|
|
// Note: GLFW currently returns physical pixel sizes,
|
|
// but we need to predict the window system-side size of the fullscreen window
|
|
// for Ebiten's `ScreenSizeInFullscreen` public API.
|
|
// Also at the moment we need this prior to switching to fullscreen, but that might be replacable.
|
|
// So this function computes the ratio of physical per logical pixels.
|
|
xconn, err := xgb.NewConn()
|
|
if err != nil {
|
|
// No X11 connection?
|
|
// Assume we're on pure Wayland then.
|
|
// GLFW/Wayland shouldn't be having this issue.
|
|
return 1
|
|
}
|
|
defer xconn.Close()
|
|
|
|
if err := randr.Init(xconn); err != nil {
|
|
// No RANDR extension? No problem.
|
|
return 1
|
|
}
|
|
|
|
root := xproto.Setup(xconn).DefaultScreen(xconn).Root
|
|
res, err := randr.GetScreenResourcesCurrent(xconn, root).Reply()
|
|
if err != nil {
|
|
// Likely means RANDR is not working. No problem.
|
|
return 1
|
|
}
|
|
|
|
monitorX, monitorY := m.GetPos()
|
|
|
|
for _, crtc := range res.Crtcs[:res.NumCrtcs] {
|
|
info, err := randr.GetCrtcInfo(xconn, crtc, res.ConfigTimestamp).Reply()
|
|
if err != nil {
|
|
// This Crtc is bad. Maybe just got disconnected?
|
|
continue
|
|
}
|
|
if info.NumOutputs == 0 {
|
|
// This Crtc is not connected to any output.
|
|
// In other words, a disabled monitor.
|
|
continue
|
|
}
|
|
if int(info.X) == monitorX && int(info.Y) == monitorY {
|
|
xWidth, xHeight := info.Width, info.Height
|
|
vm := m.GetVideoMode()
|
|
physWidth, physHeight := vm.Width, vm.Height
|
|
// Return one scale, even though there may be separate X and Y scales.
|
|
// Return the _larger_ scale, as this would yield a letterboxed display on mismatch, rather than a cut-off one.
|
|
scale := math.Max(float64(physWidth)/float64(xWidth), float64(physHeight)/float64(xHeight))
|
|
return scale
|
|
}
|
|
}
|
|
|
|
// Monitor not known to XRandR. Weird.
|
|
return 1
|
|
}
|
|
|
|
// fromGLFWMonitorPixel must be called from the main thread.
|
|
func (u *UserInterface) fromGLFWMonitorPixel(x float64, videoModeScale float64) float64 {
|
|
return x / (videoModeScale * u.deviceScaleFactor())
|
|
}
|
|
|
|
// fromGLFWPixel must be called from the main thread.
|
|
func (u *UserInterface) fromGLFWPixel(x float64) float64 {
|
|
return x / u.deviceScaleFactor()
|
|
}
|
|
|
|
// toGLFWPixel must be called from the main thread.
|
|
func (u *UserInterface) toGLFWPixel(x float64) float64 {
|
|
return x * u.deviceScaleFactor()
|
|
}
|
|
|
|
func (u *UserInterface) adjustWindowPosition(x, y int) (int, int) {
|
|
return x, y
|
|
}
|
|
|
|
func currentMonitorByOS(_ *glfw.Window) *glfw.Monitor {
|
|
// TODO: Implement this correctly. (#1119).
|
|
return nil
|
|
}
|
|
|
|
func (u *UserInterface) nativeWindow() uintptr {
|
|
// TODO: Implement this.
|
|
return 0
|
|
}
|
|
|
|
func (u *UserInterface) isNativeFullscreen() bool {
|
|
return false
|
|
}
|
|
|
|
func (u *UserInterface) setNativeCursor(shape driver.CursorShape) {
|
|
// TODO: Use native API in the future (#1571)
|
|
u.window.SetCursor(glfwSystemCursors[shape])
|
|
}
|
|
|
|
func (u *UserInterface) isNativeFullscreenAvailable() bool {
|
|
return false
|
|
}
|
|
|
|
func (u *UserInterface) setNativeFullscreen(fullscreen bool) {
|
|
panic(fmt.Sprintf("glfw: setNativeFullscreen is not implemented in this environment: %s", runtime.GOOS))
|
|
}
|
|
|
|
func (u *UserInterface) adjustViewSize() {
|
|
}
|