ebiten/internal/devicescale/impl_desktop.go
divVerent 923c84a3d6
Split the concept of device scale and screen scale (#1811)
We now set deviceScale to always the mapping from logical window system pixels
to device independent pixels (which is what Ebiten API users expect), and
introduce a new concept of videoModeScale that maps from video mode to logical
window system pixels.

videoModeScale is now only used for computing full-screen resolutions, while
deviceScale is used for any other conversion.

Fixes window sizes on X11, should be a NOP otherwise.

Closes #1774.
2021-09-15 01:03:04 +09:00

41 lines
1.1 KiB
Go

// Copyright 2021 The Ebiten 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.
//go:build !android && !ios && !js
// +build !android,!ios,!js
package devicescale
import (
"github.com/hajimehoshi/ebiten/v2/internal/glfw"
)
func monitorAt(x, y int) *glfw.Monitor {
// Note: this assumes that x, y are exact monitor origins.
// If they're not, this arbitrarily returns the first monitor.
monitors := glfw.GetMonitors()
for _, mon := range monitors {
mx, my := mon.GetPos()
if x == mx && y == my {
return mon
}
}
return monitors[0]
}
func impl(x, y int) float64 {
sx, _ := monitorAt(x, y).GetContentScale()
return float64(sx)
}