--- a/src/gfx.cpp
+++ b/src/gfx.cpp
@@ -51,43 +51,6 @@
 static void GfxMainBlitterViewport(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub = NULL, SpriteID sprite_id = SPR_CURSOR_MOUSE);
 static void GfxMainBlitter(const Sprite *sprite, int x, int y, BlitterMode mode, const SubSprite *sub = NULL, SpriteID sprite_id = SPR_CURSOR_MOUSE, ZoomLevel zoom = ZOOM_LVL_NORMAL);
 
-/**
- * Text drawing parameters, which can change while drawing a line, but are kept between multiple parts
- * of the same text, e.g. on line breaks.
- */
-struct DrawStringParams {
-	FontSize fontsize;
-	TextColour cur_colour, prev_colour;
-
-	DrawStringParams(TextColour colour, FontSize fontsize) : fontsize(fontsize), cur_colour(colour), prev_colour(colour) {}
-
-	/**
-	 * Switch to new colour \a c.
-	 * @param c New colour to use.
-	 */
-	inline void SetColour(TextColour c)
-	{
-		assert(c >=  TC_BLUE && c <= TC_BLACK);
-		this->prev_colour = this->cur_colour;
-		this->cur_colour = c;
-	}
-
-	/** Switch to previous colour. */
-	inline void SetPreviousColour()
-	{
-		Swap(this->cur_colour, this->prev_colour);
-	}
-
-	/**
-	 * Switch to using a new font \a f.
-	 * @param f New font to use.
-	 */
-	inline void SetFontSize(FontSize f)
-	{
-		this->fontsize = f;
-	}
-};
-
 static ReusableBuffer<uint8> _cursor_backup;
 
 /**

--- a/src/gfx_layout.cpp
+++ b/src/gfx_layout.cpp
@@ -410,11 +410,11 @@
 	const CharType *buffer_last = lastof(this->buffer);
 	CharType *buff = this->buffer;
 
-	TextColour cur_colour = colour, prev_colour = colour;
+	FontState state(colour, fontsize);
 	WChar c = 0;
 
 	do {
-		Font *f = new Font(fontsize, cur_colour);
+		Font *f = new Font(state.fontsize, state.cur_colour);
 		CharType *buff_begin = buff;
 		FontMap fontMapping;
 
@@ -428,14 +428,13 @@
 			if (c == '\0' || c == '\n') {
 				break;
 			} else if (c >= SCC_BLUE && c <= SCC_BLACK) {
-				prev_colour = cur_colour;
-				cur_colour = (TextColour)(c - SCC_BLUE);
+				state.SetColour((TextColour)(c - SCC_BLUE));
 			} else if (c == SCC_PREVIOUS_COLOUR) { // Revert to the previous colour.
-				Swap(prev_colour, cur_colour);
+				state.SetPreviousColour();
 			} else if (c == SCC_TINYFONT) {
-				fontsize = FS_SMALL;
+				state.SetFontSize(FS_SMALL);
 			} else if (c == SCC_BIGFONT) {
-				fontsize = FS_LARGE;
+				state.SetFontSize(FS_LARGE);
 			} else {
 				buff += AppendToBuffer(buff, buffer_last, c);
 				continue;
@@ -447,7 +446,7 @@
 			} else {
 				delete f;
 			}
-			f = new Font(fontsize, cur_colour);
+			f = new Font(state.fontsize, state.cur_colour);
 		}
 
 		/* Better safe than sorry. */

--- a/src/gfx_layout.h
+++ b/src/gfx_layout.h
@@ -24,6 +24,44 @@
 #endif /* WITH_ICU */
 
 /**
+ * Text drawing parameters, which can change while drawing a line, but are kept between multiple parts
+ * of the same text, e.g. on line breaks.
+ */
+struct FontState {
+	FontSize fontsize;       ///< Current font size.
+	TextColour cur_colour;   ///< Current text colour.
+	TextColour prev_colour;  ///< Text colour from before the last colour switch.
+
+	FontState(TextColour colour, FontSize fontsize) : fontsize(fontsize), cur_colour(colour), prev_colour(colour) {}
+
+	/**
+	 * Switch to new colour \a c.
+	 * @param c New colour to use.
+	 */
+	inline void SetColour(TextColour c)
+	{
+		assert(c >= TC_BLUE && c <= TC_BLACK);
+		this->prev_colour = this->cur_colour;
+		this->cur_colour = c;
+	}
+
+	/** Switch to previous colour. */
+	inline void SetPreviousColour()
+	{
+		Swap(this->cur_colour, this->prev_colour);
+	}
+
+	/**
+	 * Switch to using a new font \a f.
+	 * @param f New font to use.
+	 */
+	inline void SetFontSize(FontSize f)
+	{
+		this->fontsize = f;
+	}
+};
+
+/**
  * Container with information about a font.
  */
 class Font ICU_FONTINSTANCE {