refactor: remove powerline bg color

Themes/agnoster.json

@@ -72,6 +72,5 @@
       ]
     }
   ],
-  "console_background_color": "#193549",
   "end_space_enabled": true
 }

Themes/agnosterplus.json

@@ -9,7 +9,6 @@
           "type": "time",
           "style": "plain",
           "foreground": "#007ACC",
-          "background": "#193549",
           "properties": {
             "time_format": "15:04:05"
           }
@@ -65,6 +64,5 @@
       ]
     }
   ],
-  "console_background_color": "#193549",
   "end_space_enabled": true
 }

Themes/aliens.json

@@ -57,6 +57,5 @@
       ]
     }
   ],
-  "console_background_color": "#193549",
   "end_space_enabled": true
 }

Themes/jandedobbeleer.json

@@ -98,6 +98,5 @@
       ]
     }
   ],
-  "console_background_color": "#193549",
   "end_space_enabled": true
 }

Themes/paradox.json

@@ -90,6 +90,5 @@
       ]
     }
   ],
-  "console_background_color": "#193549",
   "end_space_enabled": true
 }

Themes/powerline.json

@@ -67,6 +67,5 @@
       ]
     }
   ],
-  "console_background_color": "#193549",
   "end_space_enabled": true
 }

color_writer.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"bytes"
+	"fmt"
 	"regexp"
 	"strings"
 
@@ -13,13 +14,23 @@ type ColorWriter struct {
 	Buffer *bytes.Buffer
 }
 
+const (
+	//Transparent implies a transparent color
+	Transparent string = "transparent"
+)
+
 func (w *ColorWriter) writeColoredText(background string, foreground string, text string) {
 	var coloredText string
-	if background != "" {
-		style := color.HEXStyle(foreground, background)
+	if foreground == Transparent {
+		style := color.HEX(background, false)
+		colorCodes := style.Code()
+		// this takes the colors and inverts them so the foreground becomes transparent
+		coloredText = fmt.Sprintf("\x1b[%s;49m\x1b[7m%s\x1b[m\x1b[0m", colorCodes, text)
+	} else if background == "" || background == Transparent {
+		style := color.HEX(foreground)
 		coloredText = style.Sprint(text)
 	} else {
-		style := color.HEX(foreground)
+		style := color.HEXStyle(foreground, background)
 		coloredText = style.Sprint(text)
 	}
 	w.Buffer.WriteString(coloredText)

color_writer_test.go

@@ -35,3 +35,12 @@ func TestWriteColorOverride(t *testing.T) {
 	writer.write("#193549", "#ff5733", text)
 	assert.NotContains(t, writer.string(), "<#ff5733>")
 }
+
+func TestWriteColorTransparent(t *testing.T) {
+	writer := &ColorWriter{
+		Buffer: new(bytes.Buffer),
+	}
+	text := "This is white"
+	writer.writeColoredText("#193549", Transparent, text)
+	t.Log(writer.string())
+}

engine.go

@@ -18,13 +18,13 @@ type engine struct {
 
 func (e *engine) getPowerlineColor(foreground bool) string {
 	if e.previousActiveSegment == nil {
-		return e.settings.ConsoleBackgroundColor
+		return Transparent
 	}
 	if !foreground && e.activeSegment.Style != Powerline {
-		return e.settings.ConsoleBackgroundColor
+		return Transparent
 	}
 	if foreground && e.previousActiveSegment.Style != Powerline {
-		return e.settings.ConsoleBackgroundColor
+		return Transparent
 	}
 	return e.previousActiveSegment.Background
 }
@@ -56,9 +56,9 @@ func (e *engine) renderPlainSegment(text string) {
 }
 
 func (e *engine) renderDiamondSegment(text string) {
-	e.renderer.write(e.settings.ConsoleBackgroundColor, e.activeSegment.Background, e.activeSegment.LeadingDiamond)
+	e.renderer.write(Transparent, e.activeSegment.Background, e.activeSegment.LeadingDiamond)
 	e.renderText(text)
-	e.renderer.write(e.settings.ConsoleBackgroundColor, e.activeSegment.Background, e.activeSegment.TrailingDiamond)
+	e.renderer.write(Transparent, e.activeSegment.Background, e.activeSegment.TrailingDiamond)
 }
 
 func (e *engine) getStringProperty(property Property, defaultValue string) string {
@@ -102,7 +102,7 @@ func (e *engine) renderBlockSegments(block *Block) string {
 		e.renderSegmentText(text)
 	}
 	if e.previousActiveSegment != nil && e.previousActiveSegment.Style == Powerline {
-		e.writePowerLineSeparator(e.settings.ConsoleBackgroundColor, e.previousActiveSegment.Background)
+		e.writePowerLineSeparator(Transparent, e.previousActiveSegment.Background)
 	}
 	return e.renderer.string()
 }

settings.go

@@ -8,10 +8,9 @@ import (
 
 //Settings holds all the theme for rendering the prompt
 type Settings struct {
-	ConsoleBackgroundColor string   `json:"console_background_color"`
-	RightSegmentOffset     int      `json:"right_segment_offset"`
-	EndSpaceEnabled        bool     `json:"end_space_enabled"`
-	Blocks                 []*Block `json:"blocks"`
+	RightSegmentOffset int      `json:"right_segment_offset"`
+	EndSpaceEnabled    bool     `json:"end_space_enabled"`
+	Blocks             []*Block `json:"blocks"`
 }
 
 //BlockType type of block
@@ -70,8 +69,7 @@ func loadUserConfiguration(env environmentInfo) (*Settings, error) {
 
 func getDefaultSettings() *Settings {
 	settings := &Settings{
-		EndSpaceEnabled:        true,
-		ConsoleBackgroundColor: "#193549",
+		EndSpaceEnabled: true,
 		Blocks: []*Block{
 			{
 				Type:               Prompt,