mirror of https://github.com/gdamore/tcell.git
114 lines
3.0 KiB
Go
114 lines
3.0 KiB
Go
// Copyright 2016 The Tcell Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use file except in compliance with the License.
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// You may obtain a copy of the license at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package views
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import (
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"sync"
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"github.com/gdamore/tcell/v2"
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)
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// SimpleStyledTextBar is a Widget that provides a single line of text, but
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// with distinct left, center, and right areas. Each of the areas can be
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// styled differently, and can contain internal style markup.
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// They align to the left, center, and right respectively.
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// This is basically a convenience type on top SimpleStyledText and BoxLayout.
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type SimpleStyledTextBar struct {
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left *SimpleStyledText
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right *SimpleStyledText
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center *SimpleStyledText
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once sync.Once
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BoxLayout
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}
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// SetRight sets the right text for the textbar.
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// It is always right-aligned.
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func (s *SimpleStyledTextBar) SetRight(m string) {
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s.initialize()
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s.right.SetMarkup(m)
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}
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// SetLeft sets the left text for the textbar.
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// It is always left-aligned.
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func (s *SimpleStyledTextBar) SetLeft(m string) {
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s.initialize()
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s.left.SetMarkup(m)
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}
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// SetCenter sets the center text for the textbar.
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// It is always centered.
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func (s *SimpleStyledTextBar) SetCenter(m string) {
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s.initialize()
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s.center.SetMarkup(m)
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}
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func (s *SimpleStyledTextBar) RegisterRightStyle(r rune, style tcell.Style) {
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s.initialize()
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s.right.RegisterStyle(r, style)
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}
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func (s *SimpleStyledTextBar) RegisterLeftStyle(r rune, style tcell.Style) {
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s.initialize()
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s.left.RegisterStyle(r, style)
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}
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func (s *SimpleStyledTextBar) RegisterCenterStyle(r rune, style tcell.Style) {
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s.initialize()
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s.center.RegisterStyle(r, style)
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}
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func (s *SimpleStyledTextBar) Size() (int, int) {
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s.initialize()
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w, h := s.BoxLayout.Size()
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if h < 1 {
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h = 1
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}
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if w < 1 {
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w = 1
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}
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return w, h
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}
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func (s *SimpleStyledTextBar) initialize() {
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s.once.Do(func() {
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s.center = NewSimpleStyledText()
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s.left = NewSimpleStyledText()
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s.right = NewSimpleStyledText()
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s.center.SetAlignment(VAlignTop | HAlignCenter)
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s.left.SetAlignment(VAlignTop | HAlignLeft)
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s.right.SetAlignment(VAlignTop | HAlignRight)
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s.BoxLayout.SetOrientation(Horizontal)
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s.BoxLayout.AddWidget(s.left, 0.0)
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s.BoxLayout.AddWidget(NewSpacer(), 1.0)
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s.BoxLayout.AddWidget(s.center, 0.0)
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s.BoxLayout.AddWidget(NewSpacer(), 1.0)
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s.BoxLayout.AddWidget(s.right, 0.0)
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})
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}
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// Init prepares the widget for use, ensuring resources needed are
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// allocated, etc.
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func (s *SimpleStyledTextBar) Init() {
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s.initialize()
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}
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// NewSimpleStyledTextBar creates an empty, initialized TextBar.
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func NewSimpleStyledTextBar() *SimpleStyledTextBar {
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s := &SimpleStyledTextBar{}
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s.initialize()
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return s
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}
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