cnc-ddraw/src/mouse.c

#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include "dd.h"
#include "hook.h"


void mouse_lock()
{
    RECT rc;

    if (g_ddraw->bnet_active)
        return;

    if (g_ddraw->devmode)
    {
        if (g_ddraw->handlemouse)
            while(real_ShowCursor(FALSE) > 0);

        return;
    }

    if (g_hook_active && !g_ddraw->locked)
    {
        // Get the window client area.
        real_GetClientRect(g_ddraw->hwnd, &rc);
        
        if(g_ddraw->adjmouse)
        {
            rc.right = g_ddraw->render.viewport.width;
            rc.bottom = g_ddraw->render.viewport.height;
        }
        else
        {
            rc.right = g_ddraw->width;
            rc.bottom = g_ddraw->height;
        }

        // Convert the client area to screen coordinates.
        POINT pt = { rc.left, rc.top };
        POINT pt2 = { rc.right, rc.bottom };

        real_ClientToScreen(g_ddraw->hwnd, &pt);
        real_ClientToScreen(g_ddraw->hwnd, &pt2);
        
        SetRect(&rc, pt.x, pt.y, pt2.x, pt2.y);
        
        rc.bottom -= (g_ddraw->mouse_y_adjust * 2) * g_ddraw->render.scale_h;

        if(g_ddraw->adjmouse)
        {
            real_SetCursorPos(
                rc.left + (g_ddraw->cursor.x * g_ddraw->render.scale_w), 
                rc.top + ((g_ddraw->cursor.y - g_ddraw->mouse_y_adjust) * g_ddraw->render.scale_h));
        }
        else
        {
            real_SetCursorPos(rc.left + g_ddraw->cursor.x, rc.top + g_ddraw->cursor.y - g_ddraw->mouse_y_adjust);
        }

        if (g_ddraw->handlemouse)
        {
            SetCapture(g_ddraw->hwnd);
            real_ClipCursor(&rc);
            while (real_ShowCursor(FALSE) > 0);
        }
        else
        {
            if (g_ddraw->hidecursor)
            {
                g_ddraw->hidecursor = FALSE;
                real_ShowCursor(FALSE);
            }

            real_ClipCursor(&rc);
        }

        g_ddraw->locked = TRUE;
    }
}

void mouse_unlock()
{
    RECT rc;

    if (g_ddraw->devmode)
    {
        if (g_ddraw->handlemouse)
            while(real_ShowCursor(TRUE) < 0);

        return;
    }

    if (!g_hook_active)
    {
        return;
    }

    if (g_ddraw->locked)
    {
        g_ddraw->locked = FALSE;

        // Get the window client area.
        real_GetClientRect(g_ddraw->hwnd, &rc);
        
        // Convert the client area to screen coordinates.
        POINT pt = { rc.left, rc.top };
        POINT pt2 = { rc.right, rc.bottom };

        real_ClientToScreen(g_ddraw->hwnd, &pt);
        real_ClientToScreen(g_ddraw->hwnd, &pt2);

        SetRect(&rc, pt.x, pt.y, pt2.x, pt2.y);
       
        if (g_ddraw->handlemouse)
        {
            while (real_ShowCursor(TRUE) < 0);
            real_SetCursor(LoadCursor(NULL, IDC_ARROW));
        }
        else
        {
            CURSORINFO ci = { .cbSize = sizeof(CURSORINFO) };
            if (real_GetCursorInfo(&ci) && ci.flags == 0)
            {
                g_ddraw->hidecursor = TRUE;
                while (real_ShowCursor(TRUE) < 0);
            }
        }

        real_ClipCursor(NULL);
        ReleaseCapture();
        
        real_SetCursorPos(
            rc.left + g_ddraw->render.viewport.x + (g_ddraw->cursor.x * g_ddraw->render.scale_w), 
            rc.top + g_ddraw->render.viewport.y + ((g_ddraw->cursor.y + g_ddraw->mouse_y_adjust) * g_ddraw->render.scale_h));
    }
}