Files
gio-patched/widget/material/editor.go
T
Chris Waldon 9f6e09317d widget/material: add disabled state support to all widgets
This commit configures all remaining widgets to draw themselves in a disabled state
when their layout.Context is disabled. A description of the
strategy employed by each follows:

- Checkbox and RadioButton: Draws the icon component in a lighter color. Currently the label text is left
in its default color.
- ProgressBar: The "progress" color is lightened, but not as much as the background color. This makes the current progress value still readable.
- Editor: The cursor is no longer drawn and the text is lightened.
- Switch: The track is unchanged, but the circular "thumb" component is lightened.

Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
2020-06-15 09:53:49 +02:00

72 lines
1.6 KiB
Go

// SPDX-License-Identifier: Unlicense OR MIT
package material
import (
"image/color"
"gioui.org/layout"
"gioui.org/op"
"gioui.org/op/paint"
"gioui.org/text"
"gioui.org/unit"
"gioui.org/widget"
)
type EditorStyle struct {
Font text.Font
TextSize unit.Value
// Color is the text color.
Color color.RGBA
// Hint contains the text displayed when the editor is empty.
Hint string
// HintColor is the color of hint text.
HintColor color.RGBA
Editor *widget.Editor
shaper text.Shaper
}
func Editor(th *Theme, editor *widget.Editor, hint string) EditorStyle {
return EditorStyle{
Editor: editor,
TextSize: th.TextSize,
Color: th.Color.Text,
shaper: th.Shaper,
Hint: hint,
HintColor: th.Color.Hint,
}
}
func (e EditorStyle) Layout(gtx layout.Context) layout.Dimensions {
defer op.Push(gtx.Ops).Pop()
macro := op.Record(gtx.Ops)
paint.ColorOp{Color: e.HintColor}.Add(gtx.Ops)
tl := widget.Label{Alignment: e.Editor.Alignment}
dims := tl.Layout(gtx, e.shaper, e.Font, e.TextSize, e.Hint)
call := macro.Stop()
if w := dims.Size.X; gtx.Constraints.Min.X < w {
gtx.Constraints.Min.X = w
}
if h := dims.Size.Y; gtx.Constraints.Min.Y < h {
gtx.Constraints.Min.Y = h
}
dims = e.Editor.Layout(gtx, e.shaper, e.Font, e.TextSize)
disabled := gtx.Queue == nil
if e.Editor.Len() > 0 {
textColor := e.Color
if disabled {
textColor = mulAlpha(textColor, 150)
}
paint.ColorOp{Color: textColor}.Add(gtx.Ops)
e.Editor.PaintText(gtx)
} else {
call.Add(gtx.Ops)
}
if !disabled {
paint.ColorOp{Color: e.Color}.Add(gtx.Ops)
e.Editor.PaintCaret(gtx)
}
return dims
}