mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-27 04:08:53 +01:00
52 lines
1.4 KiB
Go
52 lines
1.4 KiB
Go
// Copyright 2021 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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//go:build !android && !ios && !js
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package devicescale
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import (
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"github.com/hajimehoshi/ebiten/v2/internal/glfw"
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)
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func monitorAt(x, y int) *glfw.Monitor {
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// Note: this assumes that x, y are exact monitor origins.
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// If they're not, this arbitrarily returns the first monitor.
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monitors := glfw.GetMonitors()
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for _, mon := range monitors {
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mx, my := mon.GetPos()
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if x == mx && y == my {
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return mon
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}
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}
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return monitors[0]
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}
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func impl(x, y int) float64 {
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// Keep calling GetContentScale until the returned scale is 0 (#2051).
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// Retry this at most 5 times to avoid an inifinite loop.
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for i := 0; i < 5; i++ {
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// An error can happen e.g. when entering a screensaver on Windows (#2488).
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sx, _, err := monitorAt(x, y).GetContentScale()
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if err != nil {
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continue
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}
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if sx == 0 {
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continue
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}
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return float64(sx)
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}
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return 1
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}
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