65 lines
1.7 KiB
Go
65 lines
1.7 KiB
Go
package d2ui
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import "github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
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// static check that CustomWidget implements widget
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var _ Widget = &CustomWidget{}
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// CustomWidget is a widget with a fully custom render function
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type CustomWidget struct {
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*BaseWidget
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renderFunc func(target d2interface.Surface)
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cached bool
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cachedImg *d2interface.Surface
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tooltip *Tooltip
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}
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// NewCustomWidgetCached creates a new widget and caches anything rendered via the
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// renderFunc into a static image to be displayed
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func (ui *UIManager) NewCustomWidgetCached(renderFunc func(target d2interface.Surface), width, height int) *CustomWidget {
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c := ui.NewCustomWidget(renderFunc, width, height)
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c.cached = true
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// render using the renderFunc to a cache
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surface := ui.Renderer().NewSurface(width, height)
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c.cachedImg = &surface
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renderFunc(*c.cachedImg)
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return c
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}
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// NewCustomWidget creates a new widget with custom render function
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func (ui *UIManager) NewCustomWidget(renderFunc func(target d2interface.Surface), width, height int) *CustomWidget {
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base := NewBaseWidget(ui)
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base.width = width
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base.height = height
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return &CustomWidget{
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BaseWidget: base,
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renderFunc: renderFunc,
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}
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}
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// Render draws the custom widget
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func (c *CustomWidget) Render(target d2interface.Surface) {
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if c.cached {
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target.PushTranslation(c.GetPosition())
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target.Render(*c.cachedImg)
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target.Pop()
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} else {
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c.renderFunc(target)
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}
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}
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// SetTooltip gives this widget a Tooltip that is displayed if the widget is hovered
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func (c *CustomWidget) SetTooltip(t *Tooltip) {
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c.tooltip = t
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c.OnHoverStart(func() { c.tooltip.SetVisible(true) })
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c.OnHoverEnd(func() { c.tooltip.SetVisible(false) })
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}
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// Advance is a no-op
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func (c *CustomWidget) Advance(elapsed float64) error {
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return nil
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}
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