SnapKey-Pro/Hooks.cpp at main · SAPNXTDOOR/SnapKey-Pro · GitHub

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#include <windows.h>
#include <vector>
#include <map>
#include <string>

#include "InputState.h"

HHOOK keyboardHook = NULL;
HHOOK mouseHook = NULL;

/* =========================
   HOTKEY STRUCT (from main)
   ========================= */
struct Hotkey
{
    UINT modifiers;
    UINT vk;
};

extern std::vector<Hotkey> hotkeys;
extern std::map<int,std::string> actions;

void HandleHotkey(int id);

/* =========================
   CHECK MOUSE HOTKEYS
   ========================= */
void CheckMouseHotkeys(UINT vk)
{
    for(int i=0;i<(int)hotkeys.size();i++)
    {
        if(hotkeys[i].vk == vk)
        {
            HandleHotkey(i);
        }
    }
}

/* =========================
   KEYBOARD HOOK
   ========================= */
LRESULT CALLBACK KeyboardProc(int nCode, WPARAM wParam, LPARAM lParam) {

    if (nCode == HC_ACTION) {

        KBDLLHOOKSTRUCT* k = (KBDLLHOOKSTRUCT*)lParam;

        // Ignore injected input
        if (k->flags & LLKHF_INJECTED) {
            return CallNextHookEx(NULL, nCode, wParam, lParam);
        }

        bool isKeyDown = (wParam == WM_KEYDOWN || wParam == WM_SYSKEYDOWN);
        bool isKeyUp   = (wParam == WM_KEYUP   || wParam == WM_SYSKEYUP);

        if (isKeyDown || isKeyUp) {

            switch (k->vkCode) {

            case 'A':
                if (isKeyDown && !pA) { pA = true; lastH = 'A'; }
                else if (isKeyUp)      { pA = false; }
                break;

            case 'D':
                if (isKeyDown && !pD) { pD = true; lastH = 'D'; }
                else if (isKeyUp)      { pD = false; }
                break;

            case 'W':
                if (isKeyDown && !pW) { pW = true; lastV = 'W'; }
                else if (isKeyUp)      { pW = false; }
                break;

            case 'S':
                if (isKeyDown && !pS) { pS = true; lastV = 'S'; }
                else if (isKeyUp)      { pS = false; }
                break;

            default:
                break;
            }

            Update();

            // Block raw WASD ONLY when enabled
            if (g_enabled &&
                (k->vkCode == 'W' || k->vkCode == 'A' ||
                 k->vkCode == 'S' || k->vkCode == 'D')) {
                return 1;
            }
        }
    }

    return CallNextHookEx(NULL, nCode, wParam, lParam);
}

/* =========================
   MOUSE HOOK
   ========================= */
LRESULT CALLBACK MouseProc(int nCode, WPARAM wParam, LPARAM lParam) {

    if (nCode == HC_ACTION) {

        MSLLHOOKSTRUCT* ms = (MSLLHOOKSTRUCT*)lParam;

        switch (wParam)
        {

        case WM_LBUTTONDOWN:
            pFire = true;
            Update();
            CheckMouseHotkeys(VK_LBUTTON);
            break;

        case WM_LBUTTONUP:
            pFire = false;
            Update();
            break;

        case WM_RBUTTONDOWN:
            CheckMouseHotkeys(VK_RBUTTON);
            break;

        case WM_MBUTTONDOWN:
            CheckMouseHotkeys(VK_MBUTTON);
            break;

        case WM_XBUTTONDOWN:

            if(HIWORD(ms->mouseData) == XBUTTON1)
                CheckMouseHotkeys(VK_XBUTTON1);

            if(HIWORD(ms->mouseData) == XBUTTON2)
                CheckMouseHotkeys(VK_XBUTTON2);

            break;
        }
    }

    return CallNextHookEx(NULL, nCode, wParam, lParam);
}

/* =========================
   INSTALL HOOKS
   ========================= */
void InstallKeyboardHook() {

    keyboardHook = SetWindowsHookEx(
        WH_KEYBOARD_LL,
        KeyboardProc,
        NULL,
        0
    );
}

void InstallMouseHook() {

    mouseHook = SetWindowsHookEx(
        WH_MOUSE_LL,
        MouseProc,
        NULL,
        0
    );
}