Noah Petherbridge
8624a28ea9
* Added `BoxSize()` to Widget that reports the full box size including borders and margin. * The Frame uses the `BoxSize()` of widgets to position them. Reintroduces some padding issues (boxes on the GUI Test stick out of bounds a bit) but is on the right track. * Renamed `Padding` to `Margin` on the Widget object, since the Margin is taken into consideration along with Outline and Border in computing the widget's BoxSize. * Restructured the Label widget to take a Text or TextVariable property and the font settings (render.Text) are in a new `Font` property.
73 lines
1.4 KiB
Go
73 lines
1.4 KiB
Go
package ui
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
"git.kirsle.net/apps/doodle/render"
|
|
)
|
|
|
|
// Label is a simple text label widget.
|
|
type Label struct {
|
|
BaseWidget
|
|
|
|
// Configurable fields for the constructor.
|
|
Text string
|
|
TextVariable *string
|
|
Font render.Text
|
|
|
|
width int32
|
|
height int32
|
|
}
|
|
|
|
// NewLabel creates a new label.
|
|
func NewLabel(c Label) *Label {
|
|
w := &Label{
|
|
Text: c.Text,
|
|
TextVariable: c.TextVariable,
|
|
Font: c.Font,
|
|
}
|
|
w.IDFunc(func() string {
|
|
return fmt.Sprintf("Label<%s>", w.text().Text)
|
|
})
|
|
return w
|
|
}
|
|
|
|
// text returns the label's displayed text, coming from the TextVariable if
|
|
// available or else the Text attribute instead.
|
|
func (w *Label) text() render.Text {
|
|
if w.TextVariable != nil {
|
|
w.Font.Text = *w.TextVariable
|
|
return w.Font
|
|
}
|
|
w.Font.Text = w.Text
|
|
return w.Font
|
|
}
|
|
|
|
// Compute the size of the label widget.
|
|
func (w *Label) Compute(e render.Engine) {
|
|
rect, _ := e.ComputeTextRect(w.text())
|
|
|
|
if !w.FixedSize() {
|
|
w.resizeAuto(render.Rect{
|
|
W: rect.W + (w.Font.Padding * 2),
|
|
H: rect.H + (w.Font.Padding * 2),
|
|
})
|
|
}
|
|
|
|
w.MoveTo(render.Point{
|
|
X: rect.X + w.BoxThickness(1),
|
|
Y: rect.Y + w.BoxThickness(1),
|
|
})
|
|
}
|
|
|
|
// Present the label widget.
|
|
func (w *Label) Present(e render.Engine, P render.Point) {
|
|
border := w.BoxThickness(1)
|
|
|
|
w.DrawBox(e, P)
|
|
e.DrawText(w.text(), render.Point{
|
|
X: P.X + border + w.Font.Padding,
|
|
Y: P.Y + border + w.Font.Padding,
|
|
})
|
|
}
|