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Support custom TabbedPanels tab styling

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tablepad
Trevor Slocum 2 years ago
parent 27a707dceb
commit c326cc4c16
3 changed files with 108 additions and 25 deletions
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4
DESIGN.md
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@ -2,8 +2,8 @@ This document lists architectural details of cview.
# Focus-related style attributes are unset by default
This applies to all widgets except Buttons, which require a style change to
indicate focus. See [ColorUnset](https://docs.rocketnine.space/gitlab.com/tslocum/cview#pkg-variables).
This applies to all widgets except Button and TabbedPanels, which require a
style change to indicate focus. See [ColorUnset](https://docs.rocketnine.space/gitlab.com/tslocum/cview#pkg-variables).
# Widgets always use `sync.RWMutex`

118
tabbedpanels.go
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@ -12,12 +12,21 @@ import (
// may be displayed at the top or bottom of the container.
type TabbedPanels struct {
*Flex
panels *Panels
tabs *TextView
Switcher *TextView
panels *Panels
tabLabels map[string]string
currentTab string
tabTextColor tcell.Color
tabTextColorFocused tcell.Color
tabBackgroundColor tcell.Color
tabBackgroundColorFocused tcell.Color
tabDividerStart string
tabDividerMid string
tabDividerEnd string
bottomTabSwitcher bool
width, lastWidth int
@ -30,17 +39,24 @@ type TabbedPanels struct {
// NewTabbedPanels returns a new TabbedPanels object.
func NewTabbedPanels() *TabbedPanels {
t := &TabbedPanels{
Flex: NewFlex(),
panels: NewPanels(),
tabs: NewTextView(),
tabLabels: make(map[string]string),
Flex: NewFlex(),
Switcher: NewTextView(),
panels: NewPanels(),
tabTextColor: Styles.PrimaryTextColor,
tabTextColorFocused: Styles.InverseTextColor,
tabBackgroundColor: ColorUnset,
tabBackgroundColorFocused: Styles.PrimaryTextColor,
tabDividerMid: string(BoxDrawingsDoubleVertical),
tabDividerEnd: string(BoxDrawingsLightVertical),
tabLabels: make(map[string]string),
}
t.tabs.SetDynamicColors(true)
t.tabs.SetRegions(true)
t.tabs.SetWrap(true)
t.tabs.SetWordWrap(true)
t.tabs.SetHighlightedFunc(func(added, removed, remaining []string) {
s := t.Switcher
s.SetDynamicColors(true)
s.SetRegions(true)
s.SetWrap(true)
s.SetWordWrap(true)
s.SetHighlightedFunc(func(added, removed, remaining []string) {
t.SetCurrentTab(added[0])
if t.setFocus != nil {
t.setFocus(t.panels)
@ -49,7 +65,7 @@ func NewTabbedPanels() *TabbedPanels {
f := t.Flex
f.SetDirection(FlexRow)
f.AddItem(t.tabs, 1, 1, false)
f.AddItem(t.Switcher, 1, 1, false)
f.AddItem(t.panels, 0, 1, true)
return t
@ -89,7 +105,7 @@ func (t *TabbedPanels) SetCurrentTab(name string) {
t.Unlock()
t.tabs.Highlight(t.currentTab)
t.Switcher.Highlight(t.currentTab)
}
// GetCurrentTab returns the currently visible tab.
@ -112,6 +128,42 @@ func (t *TabbedPanels) SetTabLabel(name, label string) {
t.updateTabLabels()
}
// SetTabTextColor sets the color of the tab text.
func (t *TabbedPanels) SetTabTextColor(color tcell.Color) {
t.Lock()
defer t.Unlock()
t.tabTextColor = color
}
// SetTabTextColorFocused sets the color of the tab text when the tab is in focus.
func (t *TabbedPanels) SetTabTextColorFocused(color tcell.Color) {
t.Lock()
defer t.Unlock()
t.tabTextColorFocused = color
}
// SetTabBackgroundColor sets the background color of the tab.
func (t *TabbedPanels) SetTabBackgroundColor(color tcell.Color) {
t.Lock()
defer t.Unlock()
t.tabBackgroundColor = color
}
// SetTabBackgroundColorFocused sets the background color of the tab when the
// tab is in focus.
func (t *TabbedPanels) SetTabBackgroundColorFocused(color tcell.Color) {
t.Lock()
defer t.Unlock()
t.tabBackgroundColorFocused = color
}
// SetTabSwitcherDivider sets the tab switcher divider text. Color tags are supported.
func (t *TabbedPanels) SetTabSwitcherDivider(start, mid, end string) {
t.Lock()
defer t.Unlock()
t.tabDividerStart, t.tabDividerMid, t.tabDividerEnd = start, mid, end
}
// SetTabSwitcherPosition sets the position of the tab switcher.
func (t *TabbedPanels) SetTabSwitcherPosition(bottom bool) {
t.Lock()
@ -125,12 +177,12 @@ func (t *TabbedPanels) SetTabSwitcherPosition(bottom bool) {
f := t.Flex
f.RemoveItem(t.panels)
f.RemoveItem(t.tabs)
f.RemoveItem(t.Switcher)
if t.bottomTabSwitcher {
f.AddItem(t.panels, 0, 1, true)
f.AddItem(t.tabs, 1, 1, false)
f.AddItem(t.Switcher, 1, 1, false)
} else {
f.AddItem(t.tabs, 1, 1, false)
f.AddItem(t.Switcher, 1, 1, false)
f.AddItem(t.panels, 0, 1, true)
}
@ -138,17 +190,37 @@ func (t *TabbedPanels) SetTabSwitcherPosition(bottom bool) {
}
func (t *TabbedPanels) updateTabLabels() {
if len(t.panels.panels) == 0 {
t.Switcher.SetText("")
t.Flex.ResizeItem(t.Switcher, 0, 1)
return
}
var b bytes.Buffer
for _, panel := range t.panels.panels {
b.WriteString(fmt.Sprintf(`["%s"][darkcyan] %s [white][""]|`, panel.Name, t.tabLabels[panel.Name]))
b.WriteString(t.tabDividerStart)
l := len(t.panels.panels)
for i, panel := range t.panels.panels {
textColor := t.tabTextColor
backgroundColor := t.tabBackgroundColor
if panel.Name == t.currentTab {
textColor = t.tabTextColorFocused
backgroundColor = t.tabBackgroundColorFocused
}
b.WriteString(fmt.Sprintf(`["%s"][%s:%s] %s [-:-][""]`, panel.Name, ColorHex(textColor), ColorHex(backgroundColor), t.tabLabels[panel.Name]))
if i == l-1 {
b.WriteString(t.tabDividerEnd)
} else {
b.WriteString(t.tabDividerMid)
}
}
t.tabs.SetText(b.String())
t.Switcher.SetText(b.String())
reqLines := len(WordWrap(t.tabs.GetText(true), t.width))
reqLines := len(WordWrap(t.Switcher.GetText(true), t.width))
if reqLines < 1 {
reqLines = 1
}
t.Flex.ResizeItem(t.tabs, reqLines, 1)
t.Flex.ResizeItem(t.Switcher, reqLines, 1)
}
func (t *TabbedPanels) updateVisibleTabs() {
@ -227,11 +299,11 @@ func (t *TabbedPanels) MouseHandler() func(action MouseAction, event *tcell.Even
return false, nil
}
if t.tabs.InRect(x, y) {
if t.Switcher.InRect(x, y) {
if t.setFocus != nil {
defer t.setFocus(t.panels)
}
defer t.tabs.MouseHandler()(action, event, setFocus)
defer t.Switcher.MouseHandler()(action, event, setFocus)
return true, nil
}

11
util.go
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@ -1,6 +1,7 @@
package cview
import (
"fmt"
"math"
"regexp"
"sort"
@ -96,6 +97,16 @@ func init() {
}
}
// ColorHex returns the hexadecimal value of a color as a string, prefixed with #.
// If the color is invalid, a blank string is returned.
func ColorHex(c tcell.Color) string {
if !c.Valid() {
return ""
}
r, g, b := c.RGB()
return fmt.Sprintf("#%02x%02x%02x", r, g, b)
}
// styleFromTag takes the given style, defined by a foreground color (fgColor),
// a background color (bgColor), and style attributes, and modifies it based on
// the substrings (tagSubstrings) extracted by the regular expression for color

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