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Annotation of frontvm/hardware/input.c, revision 1.1.1.1

1.1       root        1: 
                      2: #include <SDL/SDL_endian.h>
                      3: #include <SDL/SDL_mouse.h>
                      4: 
                      5: #include "main.h"
                      6: #include "decode.h"
                      7: #include "input.h"
                      8: #include "m68000.h"
                      9: #include "stMemory.h"
                     10: #include "hatari-glue.h"
                     11: #include "shortcut.h"
                     12: 
                     13: INPUT input;
                     14: 
                     15: void Call_GetMouseInput (unsigned long params)
                     16: {
                     17:        short *mouse_poop;
                     18:        /* Pointer passed to struct:
                     19:         *   word mouse_motion_x
                     20:         *   word mouse_motion_y
                     21:         *   word mouse_buttons
                     22:         */
                     23: 
                     24:        mouse_poop = (short*)(STRam + STMemory_ReadLong (params+SIZE_WORD));
                     25: 
                     26:        mouse_poop[0] = SDL_SwapBE16 (SDL_SwapBE16 (mouse_poop[0]) + input.motion_x);
                     27:        mouse_poop[1] = SDL_SwapBE16 (SDL_SwapBE16 (mouse_poop[1]) + input.motion_y);
                     28:        
                     29:        if (input.mbuf_head != input.mbuf_tail) {
                     30:                mouse_poop[2] = SDL_SwapBE16 (0xf8 | input.mousebut_buf [input.mbuf_head++]);
                     31:                input.mbuf_head %= SIZE_KEYBUF;
                     32:        } else {
                     33:                mouse_poop[2] = SDL_SwapBE16 (0xf8 | input.cur_mousebut_state);
                     34:        }
                     35:        
                     36:        input.motion_x = input.motion_y = 0;
                     37: }
                     38: 
                     39: void Call_GetKeyboardEvent (unsigned long params)
                     40: {
                     41:        if ((input.buf_head) != (input.buf_tail)) {
                     42:                Regs[REG_D0] = input.key_buf [input.buf_head++];
                     43:                input.buf_head %= SIZE_KEYBUF;
                     44:        } else {
                     45:                Regs[REG_D0] = 0;
                     46:        }
                     47: }
                     48: 
                     49: 
                     50: 
                     51: 
                     52: /* Interrupt as required */
                     53: void Input_Update ()
                     54: {
                     55:        if ((input.buf_head != input.buf_tail) ||
                     56:            (input.motion_x) ||
                     57:            (input.motion_y) ||
                     58:            (input.mbuf_head != input.mbuf_tail)) {
                     59:                MakeSR ();
                     60:                
                     61:                if ((5 > FIND_IPL) && (5 > intlev ())) {
                     62:                        ExceptionVector = EXCEPTION_INPUT;
                     63:                        M68000_Exception ();
                     64:                }
                     65:        }
                     66: }
                     67: 
                     68: void Input_PressSTKey (unsigned char ScanCode, BOOL bPress)
                     69: {
                     70:        if (!bPress) ScanCode |= 0x80;
                     71:        input.key_buf [input.buf_tail++] = ScanCode;
                     72:        input.buf_tail %= SIZE_KEYBUF;
                     73: }
                     74: 
                     75: void Input_MousePress (int button)
                     76: {
                     77:        if (button == SDL_BUTTON_RIGHT) input.cur_mousebut_state |= 0x1;
                     78:        else if (button == SDL_BUTTON_LEFT) input.cur_mousebut_state |= 0x2;
                     79:        else if (button == SDL_BUTTON_MIDDLE) {
                     80:                /* middle mouse button toggles mouse grab */
                     81:                ShortCut_MouseMode();
                     82:                return;
                     83:        } else {
                     84:                return;
                     85:        }
                     86:        input.mousebut_buf [input.mbuf_tail++] = input.cur_mousebut_state;
                     87:        input.mbuf_tail %= SIZE_MOUSEBUF;
                     88: }
                     89: 
                     90: void Input_MouseRelease (int button)
                     91: {
                     92:        if (button == SDL_BUTTON_RIGHT) input.cur_mousebut_state &= ~0x1;
                     93:        else if (button == SDL_BUTTON_LEFT) input.cur_mousebut_state &= ~0x2;
                     94:        else return;
                     95:        input.mousebut_buf [input.mbuf_tail++] = input.cur_mousebut_state;
                     96:        input.mbuf_tail %= SIZE_MOUSEBUF;
                     97: }
                     98: 

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