Added light theme option to the settings

10 files changed, 103 insertions, 25 deletions

diff --git a/docs/Config.md b/docs/Config.md
index d9c3e2369..57077e852 100644
--- a/docs/Config.md
+++ b/docs/Config.md
@@ -8,6 +8,7 @@
     scrollHeight: 2 # how many lines you scroll by
     scrollPastBottom: true # enable scrolling past the bottom
     theme:
+      lightTheme: false # For terminals with a light background
       activeBorderColor:
         - white
         - bold
diff --git a/pkg/commands/branch.go b/pkg/commands/branch.go
index cbcab2712..d1cafdfb4 100644
--- a/pkg/commands/branch.go
+++ b/pkg/commands/branch.go
@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"strings"
 
+	"github.com/jesseduffield/lazygit/pkg/theme"
+
 	"github.com/fatih/color"
 	"github.com/jesseduffield/lazygit/pkg/utils"
 )
@@ -38,7 +40,7 @@ func (b *Branch) GetColor() color.Attribute {
 	case "hotfix":
 		return color.FgRed
 	default:
-		return color.FgWhite
+		return theme.DefaultTextColor
 	}
 }
 
diff --git a/pkg/commands/commit.go b/pkg/commands/commit.go
index e8a0a52e7..4102af4c0 100644
--- a/pkg/commands/commit.go
+++ b/pkg/commands/commit.go
@@ -2,6 +2,7 @@ package commands
 
 import (
 	"github.com/fatih/color"
+	"github.com/jesseduffield/lazygit/pkg/theme"
 	"github.com/jesseduffield/lazygit/pkg/utils"
 )
 
@@ -22,7 +23,7 @@ func (c *Commit) GetDisplayStrings(isFocused bool) []string {
 	green := color.New(color.FgGreen)
 	blue := color.New(color.FgBlue)
 	cyan := color.New(color.FgCyan)
-	white := color.New(color.FgWhite)
+	defaultColor := color.New(theme.DefaultTextColor)
 	magenta := color.New(color.FgMagenta)
 
 	// for some reason, setting the background to blue pads out the other commits
@@ -43,7 +44,7 @@ func (c *Commit) GetDisplayStrings(isFocused bool) []string {
 	case "selected":
 		shaColor = magenta
 	default:
-		shaColor = white
+		shaColor = defaultColor
 	}
 
 	if c.Copied {
@@ -55,5 +56,5 @@ func (c *Commit) GetDisplayStrings(isFocused bool) []string {
 		actionString = cyan.Sprint(utils.WithPadding(c.Action, 7)) + " "
 	}
 
-	return []string{shaColor.Sprint(c.Sha), actionString + white.Sprint(c.Name)}
+	return []string{shaColor.Sprint(c.Sha), actionString + defaultColor.Sprint(c.Name)}
 }
diff --git a/pkg/config/app_config.go b/pkg/config/app_config.go
index 50cb68056..ca17efd3d 100644
--- a/pkg/config/app_config.go
+++ b/pkg/config/app_config.go
@@ -244,6 +244,7 @@ func GetDefaultConfig() []byte {
   scrollPastBottom: true
   mouseEvents: false # will default to true when the feature is complete
   theme:
+    lightTheme: false
     activeBorderColor:
       - white
       - bold
diff --git a/pkg/gui/confirmation_panel.go b/pkg/gui/confirmation_panel.go
index 51ad711cb..bffda8517 100644
--- a/pkg/gui/confirmation_panel.go
+++ b/pkg/gui/confirmation_panel.go
@@ -12,6 +12,7 @@ import (
 
 	"github.com/fatih/color"
 	"github.com/jesseduffield/gocui"
+	"github.com/jesseduffield/lazygit/pkg/theme"
 )
 
 func (gui *Gui) wrappedConfirmationFunction(function func(*gocui.Gui, *gocui.View) error) func(*gocui.Gui, *gocui.View) error {
@@ -81,7 +82,7 @@ func (gui *Gui) prepareConfirmationPanel(currentView *gocui.View, title, prompt
 		confirmationView.HasLoader = hasLoader
 		confirmationView.Title = title
 		confirmationView.Wrap = true
-		confirmationView.FgColor = gocui.ColorWhite
+		confirmationView.FgColor = theme.GocuiDefaultTextColor
 	}
 	gui.g.Update(func(g *gocui.Gui) error {
 		return gui.switchFocus(gui.g, currentView, confirmationView)
diff --git a/pkg/gui/gui.go b/pkg/gui/gui.go
index 20c247fa1..6430b19f7 100644
--- a/pkg/gui/gui.go
+++ b/pkg/gui/gui.go
@@ -24,6 +24,7 @@ import (
 	"github.com/jesseduffield/lazygit/pkg/commands"
 	"github.com/jesseduffield/lazygit/pkg/config"
 	"github.com/jesseduffield/lazygit/pkg/i18n"
+	"github.com/jesseduffield/lazygit/pkg/theme"
 	"github.com/jesseduffield/lazygit/pkg/updates"
 	"github.com/jesseduffield/lazygit/pkg/utils"
 	"github.com/sirupsen/logrus"
@@ -374,6 +375,7 @@ func (gui *Gui) layout(g *gocui.Gui) error {
 	_, _ = g.SetViewOnBottom("limit")
 	g.DeleteView("limit")
 
+	textColor := theme.GocuiDefaultTextColor
 	v, err := g.SetView("main", leftSideWidth+panelSpacing, 0, width-1, height-2, gocui.LEFT)
 	if err != nil {
 		if err.Error() != "unknown view" {
@@ -381,7 +383,7 @@ func (gui *Gui) layout(g *gocui.Gui) error {
 		}
 		v.Title = gui.Tr.SLocalize("DiffTitle")
 		v.Wrap = true
-		v.FgColor = gocui.ColorWhite
+		v.FgColor = textColor
 	}
 
 	if v, err := g.SetView("status", 0, 0, leftSideWidth, vHeights["status"]-1, gocui.BOTTOM|gocui.RIGHT); err != nil {
@@ -389,7 +391,7 @@ func (gui *Gui) layout(g *gocui.Gui) error {
 			return err
 		}
 		v.Title = gui.Tr.SLocalize("StatusTitle")
-		v.FgColor = gocui.ColorWhite
+		v.FgColor = textColor
 	}
 
 	filesView, err := g.SetViewBeneath("files", "status", vHeights["files"])
@@ -399,7 +401,7 @@ func (gui *Gui) layout(g *gocui.Gui) error {
 		}
 		filesView.Highlight = true
 		filesView.Title = gui.Tr.SLocalize("FilesTitle")
-		v.FgColor = gocui.ColorWhite
+		v.FgColor = textColor
 	}
 
 	branchesView, err := g.SetViewBeneath("branches", "files", vHeights["branches"])
@@ -408,7 +410,7 @@ func (gui *Gui) layout(g *gocui.Gui) error {
 			return err
 		}
 		branchesView.Title = gui.Tr.SLocalize("BranchesTitle")
-		branchesView.FgColor = gocui.ColorWhite
+		branchesView.FgColor = textColor
 	}
 
 	if v, err := g.SetViewBeneath("commitFiles", "branches", vHeights["commits"]); err != nil {
@@ -416,7 +418,7 @@ func (gui *Gui) layout(g *gocui.Gui) error {
 			return err
 		}
 		v.Title = gui.Tr.SLocalize("CommitFiles")
-		v.FgColor = gocui.ColorWhite
+		v.FgColor = textColor
 	}
 
 	commitsView, err := g.SetViewBeneath("commits", "branches", vHeights["commits"])
@@ -425,7 +427,7 @@ func (gui *Gui) layout(g *gocui.Gui) error {
 			return err
 		}
 		commitsView.Title = gui.Tr.SLocalize("CommitsTitle")
-		commitsView.FgColor = gocui.ColorWhite
+		commitsView.FgColor = textColor
 	}
 
 	stashView, err := g.SetViewBeneath("stash", "commits", vHeights["stash"])
@@ -434,7 +436,7 @@ func (gui *Gui) layout(g *gocui.Gui) error {
 			return err
 		}
 		stashView.Title = gui.Tr.SLocalize("StashTitle")
-		stashView.FgColor = gocui.ColorWhite
+		stashView.FgColor = textColor
 	}
 
 	if v, err := g.SetView("options", appStatusOptionsBoundary-1, height-2, optionsVersionBoundary-1, height, 0); err != nil {
@@ -442,9 +444,7 @@ func (gui *Gui) layout(g *gocui.Gui) error {
 			return err
 		}
 		v.Frame = false
-		if v.FgColor, err = gui.GetOptionsPanelTextColor(); err != nil {
-			return err
-		}
+		v.FgColor = gui.GetOptionsPanelTextColor()
 	}
 
 	if gui.getCommitMessageView() == nil {
@@ -455,7 +455,7 @@ func (gui *Gui) layout(g *gocui.Gui) error {
 			}
 			g.SetViewOnBottom("commitMessage")
 			commitMessageView.Title = gui.Tr.SLocalize("CommitMessage")
-			commitMessageView.FgColor = gocui.ColorWhite
+			commitMessageView.FgColor = textColor
 			commitMessageView.Editable = true
 		}
 	}
@@ -471,7 +471,7 @@ func (gui *Gui) layout(g *gocui.Gui) error {
 				return err
 			}
 			credentialsView.Title = gui.Tr.SLocalize("CredentialsUsername")
-			credentialsView.FgColor = gocui.ColorWhite
+			credentialsView.FgColor = textColor
 			credentialsView.Editable = true
 		}
 	}
diff --git a/pkg/gui/menu_panel.go b/pkg/gui/menu_panel.go
index 66dabd03e..2d08a010b 100644
--- a/pkg/gui/menu_panel.go
+++ b/pkg/gui/menu_panel.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 
 	"github.com/jesseduffield/gocui"
+	"github.com/jesseduffield/lazygit/pkg/theme"
 	"github.com/jesseduffield/lazygit/pkg/utils"
 )
 
@@ -62,7 +63,7 @@ func (gui *Gui) createMenu(title string, items interface{}, itemCount int, handl
 	x0, y0, x1, y1 := gui.getConfirmationPanelDimensions(gui.g, false, list)
 	menuView, _ := gui.g.SetView("menu", x0, y0, x1, y1, 0)
 	menuView.Title = title
-	menuView.FgColor = gocui.ColorWhite
+	menuView.FgColor = theme.GocuiDefaultTextColor
 	menuView.Clear()
 	fmt.Fprint(menuView, list)
 	gui.State.Panels.Menu.SelectedLine = 0
diff --git a/pkg/gui/merge_panel.go b/pkg/gui/merge_panel.go
index 1b4f1a88f..5b08ddbdc 100644
--- a/pkg/gui/merge_panel.go
+++ b/pkg/gui/merge_panel.go
@@ -14,6 +14,7 @@ import (
 	"github.com/golang-collections/collections/stack"
 	"github.com/jesseduffield/gocui"
 	"github.com/jesseduffield/lazygit/pkg/commands"
+	"github.com/jesseduffield/lazygit/pkg/theme"
 	"github.com/jesseduffield/lazygit/pkg/utils"
 )
 
@@ -50,7 +51,7 @@ func (gui *Gui) coloredConflictFile(content string, conflicts []commands.Conflic
 	conflict, remainingConflicts := gui.shiftConflict(conflicts)
 	var outputBuffer bytes.Buffer
 	for i, line := range utils.SplitLines(content) {
-		colourAttr := color.FgWhite
+		colourAttr := theme.DefaultTextColor
 		if i == conflict.Start || i == conflict.Middle || i == conflict.End {
 			colourAttr = color.FgRed
 		}
diff --git a/pkg/gui/theme.go b/pkg/gui/theme.go
index 1f87e325e..d2341bbf3 100644
--- a/pkg/gui/theme.go
+++ b/pkg/gui/theme.go
@@ -2,6 +2,7 @@ package gui
 
 import (
 	"github.com/jesseduffield/gocui"
+	"github.com/jesseduffield/lazygit/pkg/theme"
 )
 
 // GetAttribute gets the gocui color attribute from the string
@@ -37,18 +38,19 @@ func (gui *Gui) GetColor(keys []string) gocui.Attribute {
 }
 
 // GetOptionsPanelTextColor gets the color of the options panel text
-func (gui *Gui) GetOptionsPanelTextColor() (gocui.Attribute, error) {
+func (gui *Gui) GetOptionsPanelTextColor() gocui.Attribute {
 	userConfig := gui.Config.GetUserConfig()
 	optionsColor := userConfig.GetStringSlice("gui.theme.optionsTextColor")
-	return gui.GetColor(optionsColor), nil
+	return gui.GetColor(optionsColor)
 }
 
 // SetColorScheme sets the color scheme for the app based on the user config
 func (gui *Gui) SetColorScheme() error {
 	userConfig := gui.Config.GetUserConfig()
-	activeBorderColor := userConfig.GetStringSlice("gui.theme.activeBorderColor")
-	inactiveBorderColor := userConfig.GetStringSlice("gui.theme.inactiveBorderColor")
-	gui.g.FgColor = gui.GetColor(inactiveBorderColor)
-	gui.g.SelFgColor = gui.GetColor(activeBorderColor)
+	theme.UpdateTheme(userConfig)
+
+	gui.g.FgColor = theme.InactiveBorderColor
+	gui.g.SelFgColor = theme.ActiveBorderColor
+
 	return nil
 }
diff --git a/pkg/theme/theme.go b/pkg/theme/theme.go
new file mode 100644
index 000000000..4b2c0e9b2
--- /dev/null
+++ b/pkg/theme/theme.go
@@ -0,0 +1,68 @@
+package theme
+
+import (
+	"github.com/fatih/color"
+	"github.com/jesseduffield/gocui"
+	"github.com/spf13/viper"
+)
+
+var (
+	// DefaultTextColor is the default text color
+	DefaultTextColor = color.FgWhite
+
+	// GocuiDefaultTextColor does the same as DefaultTextColor but this one only colors gocui default text colors
+	GocuiDefaultTextColor gocui.Attribute
+
+	// ActiveBorderColor is the border color of the active frame
+	ActiveBorderColor gocui.Attribute
+
+	// InactiveBorderColor is the border color of the inactive active frames
+	InactiveBorderColor gocui.Attribute
+)
+
+// UpdateTheme updates all theme variables
+func UpdateTheme(userConfig *viper.Viper) {
+	ActiveBorderColor = getColor(userConfig.GetStringSlice("gui.theme.activeBorderColor"))
+	InactiveBorderColor = getColor(userConfig.GetStringSlice("gui.theme.inactiveBorderColor"))
+
+	isLightTheme := userConfig.GetBool("gui.theme.lightTheme")
+	if isLightTheme {
+		DefaultTextColor = color.FgBlack
+		GocuiDefaultTextColor = gocui.ColorBlack
+	} else {
+		DefaultTextColor = color.FgWhite
+		GocuiDefaultTextColor = gocui.ColorWhite
+	}
+}
+
+// getAttribute gets the gocui color attribute from the string
+func getAttribute(key string) gocui.Attribute {
+	colorMap := map[string]gocui.Attribute{
+		"default":   gocui.ColorDefault,
+		"black":     gocui.ColorBlack,
+		"red":       gocui.ColorRed,
+		"green":     gocui.ColorGreen,
+		"yellow":    gocui.ColorYellow,
+		"blue":      gocui.ColorBlue,
+		"magenta":   gocui.ColorMagenta,
+		"cyan":      gocui.ColorCyan,
+		"white":     gocui.ColorWhite,
+		"bold":      gocui.AttrBold,
+		"reverse":   gocui.AttrReverse,
+		"underline": gocui.AttrUnderline,
+	}
+	value, present := colorMap[key]
+	if present {
+		return value
+	}
+	return gocui.ColorWhite
+}
+
+// getColor bitwise OR's a list of attributes obtained via the given keys
+func getColor(keys []string) gocui.Attribute {
+	var attribute gocui.Attribute
+	for _, key := range keys {
+		attribute |= getAttribute(key)
+	}
+	return attribute
+}