136 lines
2.7 KiB
Go
136 lines
2.7 KiB
Go
package ui
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import (
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"fmt"
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"git.kirsle.net/apps/doodle/lib/render"
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)
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// Window is a frame with a title bar.
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type Window struct {
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BaseWidget
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Title string
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Active bool
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// Private widgets.
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body *Frame
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titleBar *Label
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content *Frame
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}
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// NewWindow creates a new window.
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func NewWindow(title string) *Window {
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w := &Window{
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Title: title,
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body: NewFrame("body:" + title),
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}
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w.IDFunc(func() string {
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return fmt.Sprintf("Window<%s>",
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w.Title,
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)
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})
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w.body.Configure(Config{
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Background: render.Grey,
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BorderSize: 2,
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BorderStyle: BorderRaised,
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})
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// Title bar widget.
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titleBar := NewLabel(Label{
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TextVariable: &w.Title,
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Font: render.Text{
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Color: render.White,
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Size: 10,
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Stroke: render.DarkBlue,
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Padding: 2,
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},
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})
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titleBar.Configure(Config{
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Background: render.Blue,
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})
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w.body.Pack(titleBar, Pack{
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Side: Top,
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Fill: FillX,
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})
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w.titleBar = titleBar
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// Window content frame.
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content := NewFrame("content:" + title)
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content.Configure(Config{
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Background: render.Grey,
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})
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w.body.Pack(content, Pack{
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Side: Top,
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Fill: FillBoth,
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})
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w.content = content
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return w
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}
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// Children returns the window's child widgets.
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func (w *Window) Children() []Widget {
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return []Widget{
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w.body,
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}
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}
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// TitleBar returns the title bar widget.
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func (w *Window) TitleBar() *Label {
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return w.titleBar
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}
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// Frame returns the content frame of the window.
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func (w *Window) Frame() *Frame {
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return w.content
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}
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// Configure the widget. Color and style changes are passed down to the inner
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// content frame of the window.
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func (w *Window) Configure(C Config) {
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w.BaseWidget.Configure(C)
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w.body.Configure(C)
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// Don't pass dimensions down any further than the body.
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C.Width = 0
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C.Height = 0
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w.content.Configure(C)
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}
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// ConfigureTitle configures the title bar widget.
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func (w *Window) ConfigureTitle(C Config) {
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w.titleBar.Configure(C)
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}
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// Compute the window.
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func (w *Window) Compute(e render.Engine) {
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var size = w.Size()
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w.body.Compute(e)
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// Assign a manual Height to the title bar using its naturally computed
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// height, but leave the Width empty so the frame packer can stretch it
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// horizontally.
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w.titleBar.Configure(Config{
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Height: w.titleBar.Size().H,
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})
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// Shrink down the content frame to leave room for the title bar.
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w.content.Resize(render.Rect{
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W: size.W - w.BoxThickness(2) - w.titleBar.BoxThickness(2),
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H: size.H - w.titleBar.Size().H - w.BoxThickness(4) -
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((w.titleBar.Font.Padding + w.titleBar.Font.PadY) * 2),
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})
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}
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// Present the window.
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func (w *Window) Present(e render.Engine, P render.Point) {
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w.body.Present(e, P)
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}
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// Pack a widget into the window's frame.
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func (w *Window) Pack(child Widget, config ...Pack) {
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w.content.Pack(child, config...)
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}
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