go-charts/theme.go
2022-02-08 23:16:30 +08:00

145 lines
2.6 KiB
Go

// MIT License
// Copyright (c) 2022 Tree Xie
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package charts
import "github.com/wcharczuk/go-chart/v2/drawing"
const ThemeDark = "dark"
const ThemeLight = "light"
type Theme struct {
mode string
}
func NewTheme(mode string) *Theme {
return &Theme{
mode: mode,
}
}
func (t *Theme) IsDark() bool {
return t.mode == ThemeDark
}
func (t *Theme) GetAxisStrokeColor() drawing.Color {
if t.IsDark() {
return drawing.Color{
R: 185,
G: 184,
B: 206,
A: 255,
}
}
return drawing.Color{
R: 110,
G: 112,
B: 121,
A: 255,
}
}
func (t *Theme) GetAxisSplitLineColor() drawing.Color {
if t.IsDark() {
return drawing.Color{
R: 72,
G: 71,
B: 83,
A: 255,
}
}
return drawing.Color{
R: 224,
G: 230,
B: 242,
A: 255,
}
}
func (t *Theme) GetSeriesColor(index int) drawing.Color {
colors := t.GetSeriesColors()
return colors[index%len(colors)]
}
func (t *Theme) GetSeriesColors() []drawing.Color {
return []drawing.Color{
{
R: 84,
G: 112,
B: 198,
A: 255,
},
{
R: 145,
G: 204,
B: 117,
A: 255,
},
{
R: 250,
G: 200,
B: 88,
A: 255,
},
{
R: 238,
G: 102,
B: 102,
A: 255,
},
{
R: 115,
G: 192,
B: 222,
A: 255,
},
}
}
func (t *Theme) GetBackgroundColor() drawing.Color {
if t.IsDark() {
return drawing.Color{
R: 16,
G: 12,
B: 42,
A: 255,
}
}
return drawing.ColorWhite
}
func (t *Theme) GetTextColor() drawing.Color {
if t.IsDark() {
return drawing.Color{
R: 238,
G: 238,
B: 238,
A: 255,
}
}
return drawing.Color{
R: 70,
G: 70,
B: 70,
A: 255,
}
}