mirror of https://github.com/anoshenko/rui.git
84 lines
2.2 KiB
Go
84 lines
2.2 KiB
Go
package rui
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// ResizeEvent is the constant for "resize-event" property tag.
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// The "resize-event" is fired when the view changes its size.
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// The main listener format:
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//
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// func(View, Frame).
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//
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// The additional listener formats:
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//
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// func(Frame), func(View), and func().
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const ResizeEvent = "resize-event"
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func (view *viewData) onResize(self View, x, y, width, height float64) {
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view.frame.Left = x
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view.frame.Top = y
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view.frame.Width = width
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view.frame.Height = height
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for _, listener := range GetResizeListeners(view) {
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listener(self, view.frame)
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}
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}
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func (view *viewData) onItemResize(self View, index string, x, y, width, height float64) {
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}
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func (view *viewData) setFrameListener(tag string, value any) bool {
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listeners, ok := valueToEventListeners[View, Frame](value)
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if !ok {
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notCompatibleType(tag, value)
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return false
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}
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if listeners == nil {
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delete(view.properties, tag)
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} else {
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view.properties[tag] = listeners
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}
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view.propertyChangedEvent(tag)
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return true
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}
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func (view *viewData) setNoResizeEvent() {
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view.noResizeEvent = true
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}
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func (view *viewData) isNoResizeEvent() bool {
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return view.noResizeEvent
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}
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func (container *viewsContainerData) isNoResizeEvent() bool {
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if container.noResizeEvent {
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return true
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}
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if parent := container.Parent(); parent != nil {
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return parent.isNoResizeEvent()
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}
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return false
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}
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func (view *viewData) Frame() Frame {
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return view.frame
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}
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// GetViewFrame returns the size and location of view's viewport.
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// If the second argument (subviewID) is not specified or it is "" then the value of the first argument (view) is returned
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func GetViewFrame(view View, subviewID ...string) Frame {
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if len(subviewID) > 0 && subviewID[0] != "" {
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view = ViewByID(view, subviewID[0])
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}
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if view == nil {
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return Frame{}
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}
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return view.Frame()
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}
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// GetResizeListeners returns the list of "resize-event" listeners. If there are no listeners then the empty list is returned
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// If the second argument (subviewID) is not specified or it is "" then the listeners list of the first argument (view) is returned
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func GetResizeListeners(view View, subviewID ...string) []func(View, Frame) {
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return getEventListeners[View, Frame](view, subviewID, ResizeEvent)
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}
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