Files
gio/widget/material/editor.go
T
Chris Waldon 9d0a53fc9f widget{,/material}: [API] split interactive and non-interactive text widgets
This commit separates the types for interactive and non-interactive text within
package widget. widget.Selectable is used for all interactive text. widget.Label
is used for all non-interactive text. There is no longer a field on widget.Label
to provide it with a Selectable. If you want selectable text and are not relying
upon the material pacakge API, you need to create widget.Selectables instead of
widget.Labels. The material package's LabelStyle API is unchanged.

Signed-off-by: Chris Waldon <christopher.waldon.dev@gmail.com>
2023-03-28 09:25:33 -06:00

86 lines
2.2 KiB
Go

// SPDX-License-Identifier: Unlicense OR MIT
package material
import (
"image/color"
"gioui.org/internal/f32color"
"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.Sp
// Color is the text color.
Color color.NRGBA
// Hint contains the text displayed when the editor is empty.
Hint string
// HintColor is the color of hint text.
HintColor color.NRGBA
// SelectionColor is the color of the background for selected text.
SelectionColor color.NRGBA
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.Palette.Fg,
shaper: th.Shaper,
Hint: hint,
HintColor: f32color.MulAlpha(th.Palette.Fg, 0xbb),
SelectionColor: f32color.MulAlpha(th.Palette.ContrastBg, 0x60),
}
}
func (e EditorStyle) Layout(gtx layout.Context) layout.Dimensions {
// Choose colors.
textColorMacro := op.Record(gtx.Ops)
paint.ColorOp{Color: e.Color}.Add(gtx.Ops)
textColor := textColorMacro.Stop()
hintColorMacro := op.Record(gtx.Ops)
paint.ColorOp{Color: e.HintColor}.Add(gtx.Ops)
hintColor := hintColorMacro.Stop()
selectionColorMacro := op.Record(gtx.Ops)
paint.ColorOp{Color: blendDisabledColor(gtx.Queue == nil, e.SelectionColor)}.Add(gtx.Ops)
selectionColor := selectionColorMacro.Stop()
var maxlines int
if e.Editor.SingleLine {
maxlines = 1
}
macro := op.Record(gtx.Ops)
tl := widget.Label{Alignment: e.Editor.Alignment, MaxLines: maxlines}
dims := tl.Layout(gtx, e.shaper, e.Font, e.TextSize, e.Hint, hintColor)
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, textColor, selectionColor)
if e.Editor.Len() == 0 {
call.Add(gtx.Ops)
}
return dims
}
func blendDisabledColor(disabled bool, c color.NRGBA) color.NRGBA {
if disabled {
return f32color.Disabled(c)
}
return c
}