88 lines
2.6 KiB
Go
88 lines
2.6 KiB
Go
package objects
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import "image"
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import "git.tebibyte.media/tomo/tomo"
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import "git.tebibyte.media/tomo/tomo/text"
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import "git.tebibyte.media/tomo/tomo/event"
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var _ tomo.Object = new(TextView)
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// TextView is an area for displaying a large amount of multi-line text.
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type TextView struct {
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box tomo.TextBox
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}
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// NewTextView creates a new text view.
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func NewTextView (text string) *TextView {
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textView := &TextView { box: tomo.NewTextBox() }
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textView.box.SetRole(tomo.R("objects", "TextView"))
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textView.box.SetFocusable(true)
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textView.box.SetSelectable(true)
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textView.SetText(text)
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textView.box.SetAttr(tomo.AOverflow(false, true))
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textView.box.SetAttr(tomo.AWrap(true))
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textView.box.OnScroll(textView.handleScroll)
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return textView
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}
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// GetBox returns the underlying box.
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func (this *TextView) GetBox () tomo.Box {
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return this.box
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}
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// SetFocused sets whether or not this text view has keyboard focus. If set to
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// true, this method will steal focus away from whichever object currently has
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// focus.
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func (this *TextView) SetFocused (focused bool) {
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this.box.SetFocused(focused)
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}
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// Select sets the text cursor or selection.
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func (this *TextView) Select (dot text.Dot) {
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this.box.Select(dot)
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}
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// Dot returns the text cursor or selection.
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func (this *TextView) Dot () text.Dot {
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return this.box.Dot()
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}
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// OnDotChange specifies a function to be called when the text cursor or
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// selection changes.
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func (this *TextView) OnDotChange (callback func ()) event.Cookie {
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return this.box.OnDotChange(callback)
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}
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// SetAlign sets the X and Y alignment of the text view.
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func (this *TextView) SetAlign (x, y tomo.Align) {
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this.box.SetAttr(tomo.AAlign(x, y))
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}
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// ContentBounds returns the bounds of the inner content of the text view
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// relative to the text view's InnerBounds.
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func (this *TextView) ContentBounds () image.Rectangle {
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return this.box.ContentBounds()
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}
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// ScrollTo shifts the origin of the text view's content to the origin of the
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// text view's InnerBounds, offset by the given point.
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func (this *TextView) ScrollTo (position image.Point) {
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this.box.ScrollTo(position)
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}
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// OnContentBoundsChange specifies a function to be called when the text view's
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// ContentBounds or InnerBounds changes.
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func (this *TextView) OnContentBoundsChange (callback func ()) event.Cookie {
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return this.box.OnContentBoundsChange(callback)
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}
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// SetText sets the text content of the view.
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func (this *TextView) SetText (text string) {
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this.box.SetText(text)
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}
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func (this *TextView) handleScroll (x, y float64) bool {
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this.ScrollTo(this.ContentBounds().Min.Sub(image.Pt(int(x), int(y))))
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return true
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}
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