Add: Generic drop down list string item with icon.

2 files changed, 52 insertions, 0 deletions

diff --git a/src/widgets/dropdown.cpp b/src/widgets/dropdown.cpp
index fb235a6eb..f789b47b7 100644
--- a/src/widgets/dropdown.cpp
+++ b/src/widgets/dropdown.cpp
@@ -71,6 +71,40 @@ StringID DropDownListCharStringItem::String() const
 	return this->string;
 }
 
+DropDownListIconItem::DropDownListIconItem(SpriteID sprite, PaletteID pal, StringID string, int result, bool masked) : DropDownListParamStringItem(string, result, masked), sprite(sprite), pal(pal)
+{
+	this->dim = GetSpriteSize(sprite);
+	if (this->dim.height < (uint)FONT_HEIGHT_NORMAL) {
+		this->sprite_y = (FONT_HEIGHT_NORMAL - dim.height) / 2;
+		this->text_y = 0;
+	} else {
+		this->sprite_y = 0;
+		this->text_y = (dim.height - FONT_HEIGHT_NORMAL) / 2;
+	}
+}
+
+uint DropDownListIconItem::Height(uint width) const
+{
+	return max(this->dim.height, (uint)FONT_HEIGHT_NORMAL);
+}
+
+uint DropDownListIconItem::Width() const
+{
+	return DropDownListStringItem::Width() + this->dim.width + WD_FRAMERECT_LEFT;
+}
+
+void DropDownListIconItem::Draw(int left, int right, int top, int bottom, bool sel, Colours bg_colour) const
+{
+	bool rtl = _current_text_dir == TD_RTL;
+	DrawSprite(this->sprite, this->pal, rtl ? right - this->dim.width - WD_FRAMERECT_RIGHT : left + WD_FRAMERECT_LEFT, top + this->sprite_y);
+	DrawString(left + WD_FRAMERECT_LEFT + (rtl ? 0 : (this->dim.width + WD_FRAMERECT_LEFT)), right - WD_FRAMERECT_RIGHT - (rtl ? (this->dim.width + WD_FRAMERECT_RIGHT) : 0), top + this->text_y, this->String(), sel ? TC_WHITE : TC_BLACK);
+}
+
+void DropDownListIconItem::SetDimension(Dimension d)
+{
+	this->dim = d;
+}
+
 static const NWidgetPart _nested_dropdown_menu_widgets[] = {
 	NWidget(NWID_HORIZONTAL),
 		NWidget(WWT_PANEL, COLOUR_END, WID_DM_ITEMS), SetMinimalSize(1, 1), SetScrollbar(WID_DM_SCROLL), EndContainer(),
diff --git a/src/widgets/dropdown_type.h b/src/widgets/dropdown_type.h
index a5fe27f64..8300dd26d 100644
--- a/src/widgets/dropdown_type.h
+++ b/src/widgets/dropdown_type.h
@@ -78,6 +78,24 @@ public:
 };
 
 /**
+ * List item with icon and string.
+ */
+class DropDownListIconItem : public DropDownListParamStringItem {
+	SpriteID sprite;
+	PaletteID pal;
+	Dimension dim;
+	uint sprite_y;
+	uint text_y;
+public:
+	DropDownListIconItem(SpriteID sprite, PaletteID pal, StringID string, int result, bool masked);
+
+	/* virtual */ uint Height(uint width) const;
+	/* virtual */ uint Width() const;
+	/* virtual */ void Draw(int left, int right, int top, int bottom, bool sel, Colours bg_colour) const;
+	void SetDimension(Dimension d);
+};
+
+/**
  * A drop down list is a collection of drop down list items.
  */
 typedef AutoDeleteSmallVector<const DropDownListItem *, 4> DropDownList;