92 lines
2.0 KiB
Go
92 lines
2.0 KiB
Go
package tins2020
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type HoverEffect int
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const (
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HoverEffectLigthen HoverEffect = iota
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HoverEffectColor
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)
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type IconButton struct {
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ControlBase
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Icon string
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IconDisabled string
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IconHeight int32
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IconScale Scale
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IconWidth int32
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IconActive HoverEffect
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IconHover HoverEffect
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IsActive bool
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}
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func NewIconButton(icon string, onClick EventContextFn) *IconButton {
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return &IconButton{
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ControlBase: ControlBase{
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OnLeftMouseButtonClick: onClick,
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},
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Icon: icon,
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}
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}
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func NewIconButtonConfig(icon string, onClick EventContextFn, configure func(*IconButton)) *IconButton {
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button := NewIconButton(icon, onClick)
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configure(button)
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return button
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}
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func (b *IconButton) activeTexture(ctx *Context) *Texture {
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if b.IsDisabled {
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texture := ctx.Textures.Texture(b.IconDisabled)
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if texture != nil {
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return texture
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}
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texture = ctx.Textures.Texture(b.Icon)
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if len(b.IconDisabled) == 0 {
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return texture
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}
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color, err := HexColor(b.IconDisabled)
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if err == nil {
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texture.SetColor(color)
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}
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return texture
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}
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return ctx.Textures.Texture(b.Icon)
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}
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func (b *IconButton) Render(ctx *Context) {
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iconTexture := b.activeTexture(ctx)
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hover := b.IsMouseOver && !b.IsDisabled
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if (hover && b.IconHover == HoverEffectColor) || (b.IsActive && b.IconActive == HoverEffectColor) {
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iconTexture.SetColor(MustHexColor("#15569F"))
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}
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if b.IconScale == ScaleCenter {
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size := iconTexture.Size()
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if b.IconWidth != 0 {
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size = Pt(b.IconWidth, b.IconWidth*size.Y/size.X)
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} else if b.IconHeight != 0 {
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size = Pt(b.IconHeight*size.X/size.Y, b.IconHeight)
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}
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iconTexture.CopyResize(ctx.Renderer, Rect(b.Bounds.X+(b.Bounds.W-size.X)/2, b.Bounds.Y+(b.Bounds.H-size.Y)/2, size.X, size.Y))
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} else {
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iconTexture.CopyResize(ctx.Renderer, b.Bounds)
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}
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if (hover && b.IconHover == HoverEffectLigthen) || (b.IsActive && b.IconActive == HoverEffectLigthen) {
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SetDrawColor(ctx.Renderer, TransparentWhite)
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ctx.Renderer.FillRect(b.Bounds.SDLPtr())
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}
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iconTexture.SetColor(White)
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}
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type Scale int
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const (
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ScaleCenter Scale = iota
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ScaleStretch
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)
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