From f3d931aa7cfaf96baef8383b59a8938779541ee7 Mon Sep 17 00:00:00 2001
From: Amlal EL Mahrouss <amlalelmahrouss@icloud.com>
Date: Thu, 15 Aug 2024 18:35:34 +0200
Subject: [IMP] Moved source code into dev/ folder.

Signed-off-by: Amlal EL Mahrouss <amlalelmahrouss@icloud.com>
---
 dev/Kernel/HALKit/AMD64/HalKernelMouse.cxx | 190 +++++++++++++++++++++++++++++
 1 file changed, 190 insertions(+)
 create mode 100644 dev/Kernel/HALKit/AMD64/HalKernelMouse.cxx

(limited to 'dev/Kernel/HALKit/AMD64/HalKernelMouse.cxx')

diff --git a/dev/Kernel/HALKit/AMD64/HalKernelMouse.cxx b/dev/Kernel/HALKit/AMD64/HalKernelMouse.cxx
new file mode 100644
index 00000000..bff5e5ee
--- /dev/null
+++ b/dev/Kernel/HALKit/AMD64/HalKernelMouse.cxx
@@ -0,0 +1,190 @@
+/* -------------------------------------------
+
+	Copyright ZKA Technologies.
+
+------------------------------------------- */
+
+#include <Modules/PS2/PS2MouseInterface.hxx>
+#include <Modules/CoreCG/FbRenderer.hxx>
+#include <Modules/CoreCG/Rsrc/Cursor.rsrc>
+#include <KernelKit/Framebuffer.hxx>
+#include <NewKit/Defines.hxx>
+
+/// @note forward decl.
+EXTERN_C Kernel::Boolean _hal_draw_mouse();
+EXTERN_C Kernel::Void _hal_init_mouse();
+
+STATIC Kernel::Int32 kPrevX		 = 10;
+STATIC Kernel::Int32 kPrevY		 = 10;
+STATIC Kernel::Int32 kX			 = 10;
+STATIC Kernel::Int32 kY			 = 10;
+STATIC Kernel::Int32 kMouseCycle = 0;
+STATIC Kernel::PS2MouseInterface kMousePS2;
+STATIC Kernel::Char kMousePacket[4]		 = {};
+STATIC Kernel::Boolean kMousePacketReady = false;
+
+STATIC CGInit();
+
+#define kPS2Leftbutton	 0b00000001
+#define kPS2Middlebutton 0b00000010
+#define kPS2Rightbutton	 0b00000100
+#define kPS2XSign		 0b00010000
+#define kPS2YSign		 0b00100000
+#define kPS2XOverflow	 0b01000000
+#define kPS2YOverflow	 0b10000000
+
+using namespace Kernel;
+
+Void hal_handle_mouse()
+{
+	Kernel::UInt8 data = HAL::In8(0x60);
+
+	switch (kMouseCycle)
+	{
+	case 0:
+		if (kMousePacketReady)
+			break;
+		if ((data & 0b00001000) == 0)
+			break;
+		kMousePacket[0] = data;
+		kMouseCycle++;
+		break;
+	case 1:
+		if (kMousePacketReady)
+			break;
+		kMousePacket[1] = data;
+		kMouseCycle++;
+		break;
+	case 2:
+		if (kMousePacketReady)
+			break;
+		kMousePacket[2]	  = data;
+		kMousePacketReady = true;
+		kMouseCycle		  = 0;
+		break;
+	}
+
+	// Notify PIC controller that we're done with it's interrupt.
+
+	Kernel::HAL::Out8(0x20, 0x20);
+	Kernel::HAL::Out8(0xA0, 0x20);
+}
+
+/// @brief Interrupt handler for the mouse.
+EXTERN_C Void _hal_handle_mouse()
+{
+	hal_handle_mouse();
+}
+
+EXTERN_C Boolean _hal_left_button_pressed()
+{
+	return kMousePacket[0] & kPS2Leftbutton;
+}
+EXTERN_C Boolean _hal_right_button_pressed()
+{
+	return kMousePacket[0] & kPS2Rightbutton;
+}
+EXTERN_C Boolean _hal_middle_button_pressed()
+{
+	return kMousePacket[0] & kPS2Middlebutton;
+}
+
+/// @brief Draws the kernel's mouse.
+EXTERN_C Boolean _hal_draw_mouse()
+{
+	if (!kMousePacketReady)
+		return false;
+
+	bool xNegative, yNegative, xOverflow, yOverflow;
+
+	if (kMousePacket[0] & kPS2XSign)
+	{
+		xNegative = true;
+	}
+	else
+		xNegative = false;
+
+	if (kMousePacket[0] & kPS2YSign)
+	{
+		yNegative = true;
+	}
+	else
+		yNegative = false;
+
+	if (kMousePacket[0] & kPS2XOverflow)
+	{
+		xOverflow = true;
+	}
+	else
+		xOverflow = false;
+
+	if (kMousePacket[0] & kPS2YOverflow)
+	{
+		yOverflow = true;
+	}
+	else
+		yOverflow = false;
+
+	if (!xNegative)
+	{
+		kX += kMousePacket[1];
+		if (xOverflow)
+		{
+			kX += 255;
+		}
+	}
+	else
+	{
+		kMousePacket[1] = 256 - kMousePacket[1];
+		kX -= kMousePacket[1];
+		if (xOverflow)
+		{
+			kX -= 255;
+		}
+	}
+
+	if (!yNegative)
+	{
+		kY -= kMousePacket[2];
+		if (yOverflow)
+		{
+			kY -= 255;
+		}
+	}
+	else
+	{
+		kMousePacket[2] = 256 - kMousePacket[2];
+		kY += kMousePacket[2];
+		if (yOverflow)
+		{
+			kY += 255;
+		}
+	}
+
+	if (kX < 0)
+		kX = 0;
+	if (kX > kHandoverHeader->f_GOP.f_Width - 8)
+		kX = kHandoverHeader->f_GOP.f_Width - 8;
+
+	if (kY < 0)
+		kY = 0;
+	if (kY > kHandoverHeader->f_GOP.f_Height - 16)
+		kY = kHandoverHeader->f_GOP.f_Height - 16;
+
+	/// Draw mouse here.
+
+	kPrevX = kX;
+	kPrevY = kY;
+
+	kMousePacketReady = false;
+	return true;
+}
+
+/// @brief Init kernel mouse.
+EXTERN_C Void _hal_init_mouse()
+{
+	kMousePS2.Init();
+
+	HAL::Out8(0x21, 0b11111001);
+	HAL::Out8(0xA1, 0b11101111);
+}
-- 
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