51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
package animation
|
||
|
||
import (
|
||
"fmt"
|
||
)
|
||
|
||
// FadeAnimation 淡入淡出动画
|
||
type FadeAnimation struct {
|
||
BaseAnimation
|
||
From string // 起始透明度
|
||
To string // 结束透明度
|
||
}
|
||
|
||
// NewFadeAnimation 创建一个淡入淡出动画
|
||
func NewFadeAnimation(targetID string, from, to string, duration float64, repeatCount int) *FadeAnimation {
|
||
return &FadeAnimation{
|
||
BaseAnimation: BaseAnimation{
|
||
Type: Fade,
|
||
Duration: duration,
|
||
RepeatCount: repeatCount,
|
||
Delay: 0,
|
||
TargetID: targetID,
|
||
Attributes: make(map[string]string),
|
||
},
|
||
From: from,
|
||
To: to,
|
||
}
|
||
}
|
||
|
||
// GenerateSVG 生成淡入淡出动画的SVG代码
|
||
func (a *FadeAnimation) GenerateSVG() string {
|
||
// 创建一个animate元素，并将其添加到目标元素中
|
||
svg := fmt.Sprintf("<animate href=\"#%s\" attributeName=\"opacity\" ", a.TargetID)
|
||
svg += fmt.Sprintf("from=\"%s\" to=\"%s\" ", a.From, a.To)
|
||
svg += fmt.Sprintf("dur=\"%gs\" ", a.Duration)
|
||
|
||
if a.RepeatCount < 0 {
|
||
svg += "repeatCount=\"indefinite\" "
|
||
} else if a.RepeatCount > 0 {
|
||
svg += fmt.Sprintf("repeatCount=\"%d\" ", a.RepeatCount)
|
||
}
|
||
|
||
if a.Delay > 0 {
|
||
svg += fmt.Sprintf("begin=\"%gs\" ", a.Delay)
|
||
}
|
||
|
||
svg += "/>\n"
|
||
|
||
return svg
|
||
}
|