ebiten/examples/monitor/main.go
Hajime Hoshi a269cf3785 ebiten: remove (*Monitor).Bounds()
Now the unit of Bounds is device-dependent pixels, and this is useless
and Ebitengine API always treat device-independent pixels. Rather,
this might confuse users.

Until we find a good solution, let's remove Bounds() for v2.6.
MonitorType itself is still useful to specify a monitor to show a
window.
2023-09-23 18:24:03 +09:00

103 lines
2.6 KiB
Go

// Copyright 2023 The Ebitengine Authors
//
// 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.
package main
import (
"flag"
"fmt"
"log"
"strings"
"github.com/hajimehoshi/ebiten/v2"
"github.com/hajimehoshi/ebiten/v2/ebitenutil"
"github.com/hajimehoshi/ebiten/v2/inpututil"
)
const (
windowWidth = 640
windowHeight = 480
)
type Game struct {
monitors []*ebiten.MonitorType
}
func (g *Game) Update() error {
// Refresh monitors.
g.monitors = ebiten.AppendMonitors(g.monitors[:0])
// Handle keypresses.
if inpututil.IsKeyJustReleased(ebiten.KeyF) {
ebiten.SetFullscreen(!ebiten.IsFullscreen())
} else {
for i, m := range g.monitors {
if inpututil.IsKeyJustPressed(ebiten.KeyDigit0 + ebiten.Key(i)) {
ebiten.SetWindowTitle(m.Name())
ebiten.SetMonitor(m)
}
}
}
return nil
}
func (g *Game) Draw(screen *ebiten.Image) {
lines := []string{"F to toggle fullscreen", "0-9 to change monitor"}
lines = append(lines, "")
for i, m := range g.monitors {
lines = append(lines, fmt.Sprintf("%d: %s", i, m.Name()))
}
activeMonitor := ebiten.Monitor()
lines = append(lines, "")
for i, m := range g.monitors {
if m == activeMonitor {
lines = append(lines, fmt.Sprintf("active: %s (%d)", m.Name(), i))
}
}
ebitenutil.DebugPrint(screen, strings.Join(lines, "\n"))
}
func (g *Game) Layout(outsideWidth, outsideHeight int) (int, int) {
return windowWidth / 2, windowHeight / 2
}
func main() {
g := &Game{}
// Allow the user to pass in a monitor flag to target a specific monitor.
var monitor int
flag.IntVar(&monitor, "monitor", 0, "target monitor index to run the program on")
flag.Parse()
// Read our monitors.
g.monitors = ebiten.AppendMonitors(nil)
// Ensure the user did not supply a monitor index beyond the range of available monitors. If they did, set the monitor to the primary.
if monitor < 0 || monitor >= len(g.monitors) {
monitor = 0
}
targetMonitor := g.monitors[monitor]
ebiten.SetMonitor(targetMonitor)
ebiten.SetWindowTitle(targetMonitor.Name())
ebiten.SetWindowSize(windowWidth, windowHeight)
if err := ebiten.RunGame(g); err != nil {
log.Fatal(err)
}
}