mirror of
https://github.com/JetSetIlly/Gopher2600.git
synced 2025-04-02 11:02:17 -04:00
98 lines
2.1 KiB
Go
98 lines
2.1 KiB
Go
// This file is part of Gopher2600.
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//
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// Gopher2600 is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Gopher2600 is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Gopher2600. If not, see <https://www.gnu.org/licenses/>.
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package display
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import (
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"github.com/jetsetilly/gopher2600/prefs"
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"github.com/jetsetilly/gopher2600/resources"
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)
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type Colour struct {
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dsk *prefs.Disk
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Brightness prefs.Float
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Contrast prefs.Float
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Saturation prefs.Float
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Hue prefs.Float
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}
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func (p *Colour) String() string {
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return p.dsk.String()
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}
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const (
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brightness = 1.0
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contrast = 1.0
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saturation = 1.0
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hue = 0.0
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)
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func newColour() (*Colour, error) {
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p := &Colour{}
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p.SetDefaults()
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pth, err := resources.JoinPath(prefs.DefaultPrefsFile)
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if err != nil {
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return nil, err
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}
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p.dsk, err = prefs.NewDisk(pth)
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if err != nil {
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return nil, err
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}
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err = p.dsk.Add("display.color.brightness", &p.Brightness)
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if err != nil {
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return nil, err
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}
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err = p.dsk.Add("display.color.contrast", &p.Contrast)
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if err != nil {
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return nil, err
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}
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err = p.dsk.Add("display.color.saturation", &p.Saturation)
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if err != nil {
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return nil, err
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}
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err = p.dsk.Add("display.color.hue", &p.Hue)
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if err != nil {
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return nil, err
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}
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err = p.dsk.Load(true)
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if err != nil {
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return nil, err
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}
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return p, nil
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}
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// SetDefaults reverts all colour values to default
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func (p *Colour) SetDefaults() {
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p.Brightness.Set(brightness)
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p.Contrast.Set(contrast)
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p.Saturation.Set(saturation)
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p.Hue.Set(hue)
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}
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// Load colour values from disk
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func (p *Colour) Load() error {
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return p.dsk.Load(false)
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}
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// Save current colour values to disk
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func (p *Colour) Save() error {
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return p.dsk.Save()
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}
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