♻️ refactor: extract window base drawing logic into a shared function

The window base drawing logic was duplicated across different window styles
(GNOME, Mac, Windows). Now it's consolidated into a single DrawWindowBase
function for better maintainability.

pkg/chrome/gnome.go

@@ -250,16 +250,15 @@ func (c *GNOMEChrome) Render(content image.Image) (image.Image, error) {
 	// Create context for drawing
 	dc := gg.NewContext(width, height+titleBarHeight)
 
-	// Draw title bar background with corner radius
-	if c.titleBar {
-		dc.SetColor(c.theme.Properties.TitleBackground)
-		if c.cornerRadius > 0 {
-			dc.DrawRoundedRectangle(0, 0, float64(width), float64(height+titleBarHeight), c.cornerRadius)
-		} else {
-			dc.DrawRectangle(0, 0, float64(width), float64(height+titleBarHeight))
-		}
-		dc.Fill()
+	// Draw the base window with rounded corners
+	if err := DrawWindowBase(dc, width, height+titleBarHeight, c.cornerRadius,
+		c.theme.Properties.TitleBackground,
+		c.theme.Properties.TitleBackground,
+		titleBarHeight); err != nil {
+		return nil, err
+	}
 
+	if c.titleBar {
 		// Draw title text if enabled
 		if c.title != "" {
 			DrawTitleText(dc, c.title, width, titleBarHeight, c.theme.Properties.TitleText, c.theme.Properties.TitleFontSize, c.theme.Properties.TitleFont)

pkg/chrome/mac.go

@@ -274,16 +274,15 @@ func (c *MacChrome) Render(content image.Image) (image.Image, error) {
 	// Create context for drawing
 	dc := gg.NewContext(width, height+titleBarHeight)
 
-	// Draw title bar background with corner radius
-	if c.titleBar {
-		dc.SetColor(c.theme.Properties.TitleBackground)
-		if c.cornerRadius > 0 {
-			dc.DrawRoundedRectangle(0, 0, float64(width), float64(height+titleBarHeight), c.cornerRadius)
-		} else {
-			dc.DrawRectangle(0, 0, float64(width), float64(height+titleBarHeight))
-		}
-		dc.Fill()
+	// Draw the base window with rounded corners
+	if err := DrawWindowBase(dc, width, height+titleBarHeight, c.cornerRadius,
+		c.theme.Properties.TitleBackground,
+		c.theme.Properties.TitleBackground,
+		titleBarHeight); err != nil {
+		return nil, err
+	}
 
+	if c.titleBar {
 		// Draw window controls
 		c.renderWindowControls(dc, titleBarHeight)
 

pkg/chrome/windows.go

@@ -203,13 +203,15 @@ func (c *WindowsChrome) Render(content image.Image) (image.Image, error) {
 	// Create context for drawing
 	dc := gg.NewContext(width, height+titleBarHeight)
 
-	// Draw title bar background with corner radius
-	if c.titleBar {
-		// Draw title bar background
-		dc.SetColor(c.theme.Properties.TitleBackground)
-		dc.DrawRectangle(0, 0, float64(width), float64(titleBarHeight))
-		dc.Fill()
+	// Draw the base window with rounded corners
+	if err := DrawWindowBase(dc, width, height+titleBarHeight, c.cornerRadius,
+		c.theme.Properties.TitleBackground,
+		c.theme.Properties.TitleBackground,
+		titleBarHeight); err != nil {
+		return nil, err
+	}
 
+	if c.titleBar {
 		// Draw title text
 		if c.title != "" {
 			DrawTitleText(dc, c.title, width, titleBarHeight, c.theme.Properties.TitleText, winDefaultTitleFontSize, c.theme.Properties.TitleFont)

pkg/version/version.go

@@ -1,4 +1,4 @@
 package version
 
 // Version is the current version of goshot
-const Version = "0.3.0"
+const Version = "0.3.1"