Noah Petherbridge
a316bafb12
Move all Doodle source code into the src/ subpackage and move the publicly shareable stuff into lib/, for example lib/ui and lib/render. This cleans up the git root and helps make the Doodle UI library more easily publishable as a separate open source project. Currently both lib/ui and lib/render import one or two things from doodle/src that need to be broken apart.
119 lines
2.7 KiB
Go
119 lines
2.7 KiB
Go
package ui
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import (
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"fmt"
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"strconv"
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"git.kirsle.net/apps/doodle/lib/render"
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"git.kirsle.net/apps/doodle/lib/ui/theme"
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)
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// CheckButton implements a checkbox and radiobox widget. It's based on a
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// Button and holds a boolean or string pointer (boolean for checkbox,
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// string for radio).
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type CheckButton struct {
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Button
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BoolVar *bool
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StringVar *string
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Value string
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}
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// NewCheckButton creates a new CheckButton.
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func NewCheckButton(name string, boolVar *bool, child Widget) *CheckButton {
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w := &CheckButton{
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BoolVar: boolVar,
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}
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w.Button.child = child
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w.IDFunc(func() string {
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return fmt.Sprintf("CheckButton<%s %+v>", name, w.BoolVar)
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})
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w.setup()
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return w
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}
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// NewRadioButton creates a CheckButton bound to a string variable.
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func NewRadioButton(name string, stringVar *string, value string, child Widget) *CheckButton {
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w := &CheckButton{
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StringVar: stringVar,
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Value: value,
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}
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w.Button.child = child
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w.IDFunc(func() string {
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return fmt.Sprintf(`RadioButton<%s "%s" %s>`, name, w.Value, strconv.FormatBool(*w.StringVar == w.Value))
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})
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w.setup()
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return w
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}
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// Compute to re-evaluate the button state (in the case of radio buttons where
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// a different button will affect the state of this one when clicked).
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func (w *CheckButton) Compute(e render.Engine) {
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if w.StringVar != nil {
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// Radio button, always re-assign the border style in case a sister
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// radio button has changed the value.
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if *w.StringVar == w.Value {
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w.SetBorderStyle(BorderSunken)
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} else {
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w.SetBorderStyle(BorderRaised)
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}
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}
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w.Button.Compute(e)
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}
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// setup the common things between checkboxes and radioboxes.
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func (w *CheckButton) setup() {
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var borderStyle BorderStyle = BorderRaised
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if w.BoolVar != nil {
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if *w.BoolVar == true {
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borderStyle = BorderSunken
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}
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}
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w.Configure(Config{
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BorderSize: 2,
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BorderStyle: borderStyle,
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OutlineSize: 1,
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OutlineColor: theme.ButtonOutlineColor,
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Background: theme.ButtonBackgroundColor,
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})
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w.Handle(MouseOver, func(p render.Point) {
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w.hovering = true
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w.SetBackground(theme.ButtonHoverColor)
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})
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w.Handle(MouseOut, func(p render.Point) {
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w.hovering = false
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w.SetBackground(theme.ButtonBackgroundColor)
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})
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w.Handle(MouseDown, func(p render.Point) {
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w.clicked = true
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w.SetBorderStyle(BorderSunken)
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})
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w.Handle(MouseUp, func(p render.Point) {
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w.clicked = false
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})
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w.Handle(Click, func(p render.Point) {
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var sunken bool
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if w.BoolVar != nil {
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if *w.BoolVar {
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*w.BoolVar = false
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} else {
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*w.BoolVar = true
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sunken = true
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}
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} else if w.StringVar != nil {
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*w.StringVar = w.Value
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sunken = true
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}
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if sunken {
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w.SetBorderStyle(BorderSunken)
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} else {
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w.SetBorderStyle(BorderRaised)
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}
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})
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}
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