From 1579ce274071159527a9af14da0b7ac4f2b0b31d Mon Sep 17 00:00:00 2001
From: DS <vorunbekannt75@web.de>
Date: Sat, 12 Nov 2022 15:52:39 +0100
Subject: [PATCH] SDL: implement cursor icon API (#135)

---
 source/Irrlicht/CIrrDeviceSDL.cpp | 19 +++++++++++++++++++
 source/Irrlicht/CIrrDeviceSDL.h   | 30 ++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+)

diff --git a/source/Irrlicht/CIrrDeviceSDL.cpp b/source/Irrlicht/CIrrDeviceSDL.cpp
index 84a6d643..12574d5a 100644
--- a/source/Irrlicht/CIrrDeviceSDL.cpp
+++ b/source/Irrlicht/CIrrDeviceSDL.cpp
@@ -1197,6 +1197,25 @@ void CIrrDeviceSDL::createKeyMap()
 	KeyMap.sort();
 }
 
+void CIrrDeviceSDL::CCursorControl::initCursors()
+{
+	Cursors.reserve(gui::ECI_COUNT);
+
+	Cursors.emplace_back(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_ARROW));     // ECI_NORMAL
+	Cursors.emplace_back(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_CROSSHAIR)); // ECI_CROSS
+	Cursors.emplace_back(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_HAND));      // ECI_HAND
+	Cursors.emplace_back(nullptr);                                             // ECI_HELP
+	Cursors.emplace_back(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_IBEAM));     // ECI_IBEAM
+	Cursors.emplace_back(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_NO));        // ECI_NO
+	Cursors.emplace_back(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_WAIT));      // ECI_WAIT
+	Cursors.emplace_back(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEALL));   // ECI_SIZEALL
+	Cursors.emplace_back(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENESW));  // ECI_SIZENESW
+	Cursors.emplace_back(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENWSE));  // ECI_SIZENWSE
+	Cursors.emplace_back(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZENS));    // ECI_SIZENS
+	Cursors.emplace_back(SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_SIZEWE));    // ECI_SIZEWE
+	Cursors.emplace_back(nullptr);                                             // ECI_UP
+}
+
 } // end namespace irr
 
 #endif // _IRR_COMPILE_WITH_SDL_DEVICE_
diff --git a/source/Irrlicht/CIrrDeviceSDL.h b/source/Irrlicht/CIrrDeviceSDL.h
index e8583997..ab809ddc 100644
--- a/source/Irrlicht/CIrrDeviceSDL.h
+++ b/source/Irrlicht/CIrrDeviceSDL.h
@@ -23,6 +23,8 @@
 #include <SDL.h>
 #include <SDL_syswm.h>
 
+#include <memory>
+
 namespace irr
 {
 
@@ -104,6 +106,7 @@ namespace irr
 			CCursorControl(CIrrDeviceSDL* dev)
 				: Device(dev), IsVisible(true)
 			{
+				initCursors();
 			}
 
 			//! Changes the visible state of the mouse cursor.
@@ -186,6 +189,22 @@ namespace irr
 				}
 			}
 
+			void setActiveIcon(gui::ECURSOR_ICON iconId) override
+			{
+				ActiveIcon = iconId;
+				if (iconId > Cursors.size() || !Cursors[iconId]) {
+					iconId = gui::ECI_NORMAL;
+					if (iconId > Cursors.size() || !Cursors[iconId])
+						return;
+				}
+				SDL_SetCursor(Cursors[iconId].get());
+			}
+
+			gui::ECURSOR_ICON getActiveIcon() const override
+			{
+				return ActiveIcon;
+			}
+
 		private:
 
 			void updateCursorPos()
@@ -222,9 +241,20 @@ namespace irr
 #endif
 			}
 
+			void initCursors();
+
 			CIrrDeviceSDL* Device;
 			core::position2d<s32> CursorPos;
 			bool IsVisible;
+
+			struct CursorDeleter {
+				void operator()(SDL_Cursor *ptr) {
+					if (ptr)
+						SDL_FreeCursor(ptr);
+				}
+			};
+			std::vector<std::unique_ptr<SDL_Cursor, CursorDeleter>> Cursors;
+			gui::ECURSOR_ICON ActiveIcon;
 		};
 
 	private: