srb2::Draw: add button and small_button methods

src/v_draw.cpp

@@ -10,6 +10,7 @@
 #include "doomdef.h" // skincolornum_t
 #include "doomtype.h"
 #include "hu_stuff.h"
+#include "i_time.h"
 #include "k_hud.h"
 #include "m_fixed.h"
 #include "r_draw.h"
@@ -84,6 +85,53 @@ void Chain::string(const char* str, INT32 flags, Font font) const
 	V_DrawStringScaled(x, y, FloatToFixed(scale_), FRACUNIT, FRACUNIT, flags, colormap_, font_to_fontno(font), str);
 }
 
+namespace
+{
+
+patch_t** get_button_patch(Draw::Button type, int ver)
+{
+	switch (type)
+	{
+#define X(x) \
+	case Draw::Button::x:\
+		return kp_button_ ## x
+
+	X(a)[ver];
+	X(b)[ver];
+	X(c)[ver];
+	X(x)[ver];
+	X(y)[ver];
+	X(z)[ver];
+	X(start);
+	X(l);
+	X(r);
+	X(up);
+	X(down);
+	X(right);
+	X(left);
+
+#undef X
+	}
+
+	return nullptr;
+};
+
+}; // namespace
+
+void Chain::button(Button type, int ver, std::optional<bool> press) const
+{
+	const auto _ = Clipper(*this);
+
+	if (press)
+	{
+		K_drawButton(FloatToFixed(x_), FloatToFixed(y_), flags_, get_button_patch(type, ver), *press);
+	}
+	else
+	{
+		K_drawButtonAnim(x_, y_, flags_, get_button_patch(type, ver), I_GetTime());
+	}
+}
+
 Chain::Clipper::Clipper(const Chain& chain)
 {
 	V_SetClipRect(

src/v_draw.hpp

@@ -54,6 +54,23 @@ public:
 		kBoth,
 	};
 
+	enum class Button
+	{
+		a,
+		b,
+		c,
+		x,
+		y,
+		z,
+		start,
+		l,
+		r,
+		up,
+		down,
+		right,
+		left,
+	};
+
 	class TextElement
 	{
 	public:
@@ -146,6 +163,9 @@ public:
 
 		void fill(UINT8 color) const;
 
+		void button(Button type, std::optional<bool> press = {}) const { button(type, 0, press); }
+		void small_button(Button type, std::optional<bool> press = {}) const { button(type, 1, press); }
+
 	private:
 		constexpr Chain() {}
 		explicit Chain(float x, float y) : x_(x), y_(y) {}
@@ -178,6 +198,7 @@ public:
 		const UINT8* colormap_ = nullptr;
 
 		void string(const char* str, INT32 flags, Font font) const;
+		void button(Button type, int ver, std::optional<bool> press = {}) const;
 
 		friend Draw;
 	};
@@ -222,6 +243,7 @@ public:
 	VOID_METHOD(patch);
 	VOID_METHOD(thumbnail);
 	VOID_METHOD(fill);
+	VOID_METHOD(button);
 
 #undef VOID_METHOD