mirror of
https://github.com/hajimehoshi/ebiten.git
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39 lines
1.0 KiB
Go
39 lines
1.0 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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package ui
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import (
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"github.com/hajimehoshi/ebiten/internal/devicescale"
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)
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type deviceScale struct {
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val float64
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frame int64
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lastUpdated int64
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}
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func (d *deviceScale) Update() {
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d.frame++
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}
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func (d *deviceScale) Get() float64 {
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// As devicescale.DeviceScale accesses OS API, not call this too often.
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if d.val == 0 || d.frame-d.lastUpdated > 30 {
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d.val = devicescale.DeviceScale()
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d.lastUpdated = d.frame
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}
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return d.val
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}
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