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Elias Naur
ac97b9d6e1
To make the semantic relation between the editor and its content clear, the editor clip operation must cover the content. This change adds an explicit widget argument to editor, and lays it out inside the clip rect. This is an API change. Users of Editor.Layout must provide a content widget. Signed-off-by: Elias Naur <mail@eliasnaur.com>
86 lines
2.2 KiB
Go
86 lines
2.2 KiB
Go
// SPDX-License-Identifier: Unlicense OR MIT
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package material
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import (
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"image/color"
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"gioui.org/internal/f32color"
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"gioui.org/layout"
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"gioui.org/op"
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"gioui.org/op/paint"
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"gioui.org/text"
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"gioui.org/unit"
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"gioui.org/widget"
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)
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type EditorStyle struct {
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Font text.Font
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TextSize unit.Value
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// Color is the text color.
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Color color.NRGBA
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// Hint contains the text displayed when the editor is empty.
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Hint string
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// HintColor is the color of hint text.
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HintColor color.NRGBA
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// SelectionColor is the color of the background for selected text.
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SelectionColor color.NRGBA
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Editor *widget.Editor
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shaper text.Shaper
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}
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func Editor(th *Theme, editor *widget.Editor, hint string) EditorStyle {
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return EditorStyle{
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Editor: editor,
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TextSize: th.TextSize,
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Color: th.Palette.Fg,
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shaper: th.Shaper,
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Hint: hint,
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HintColor: f32color.MulAlpha(th.Palette.Fg, 0xbb),
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SelectionColor: f32color.MulAlpha(th.Palette.ContrastBg, 0x60),
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}
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}
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func (e EditorStyle) Layout(gtx layout.Context) layout.Dimensions {
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macro := op.Record(gtx.Ops)
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paint.ColorOp{Color: e.HintColor}.Add(gtx.Ops)
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var maxlines int
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if e.Editor.SingleLine {
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maxlines = 1
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}
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tl := widget.Label{Alignment: e.Editor.Alignment, MaxLines: maxlines}
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dims := tl.Layout(gtx, e.shaper, e.Font, e.TextSize, e.Hint)
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call := macro.Stop()
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if w := dims.Size.X; gtx.Constraints.Min.X < w {
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gtx.Constraints.Min.X = w
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}
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if h := dims.Size.Y; gtx.Constraints.Min.Y < h {
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gtx.Constraints.Min.Y = h
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}
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dims = e.Editor.Layout(gtx, e.shaper, e.Font, e.TextSize, func(gtx layout.Context) layout.Dimensions {
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disabled := gtx.Queue == nil
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if e.Editor.Len() > 0 {
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paint.ColorOp{Color: blendDisabledColor(disabled, e.SelectionColor)}.Add(gtx.Ops)
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e.Editor.PaintSelection(gtx)
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paint.ColorOp{Color: blendDisabledColor(disabled, e.Color)}.Add(gtx.Ops)
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e.Editor.PaintText(gtx)
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} else {
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call.Add(gtx.Ops)
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}
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if !disabled {
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paint.ColorOp{Color: e.Color}.Add(gtx.Ops)
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e.Editor.PaintCaret(gtx)
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}
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return dims
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})
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return dims
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}
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func blendDisabledColor(disabled bool, c color.NRGBA) color.NRGBA {
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if disabled {
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return f32color.Disabled(c)
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}
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return c
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}
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