--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/riscos/SDL_riscosevents.c	Thu May 29 04:44:13 2003 +0000
@@ -0,0 +1,458 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the Free
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Sam Lantinga
+    slouken@devolution.com
+*/
+
+/*
+     File added by Alan Buckley (alan_baa@hotmail.com) for RISCOS compatability
+	 27 March 2003
+
+     Implements keyboard setup, event pump and keyboard and mouse polling
+*/
+
+
+#include "SDL.h"
+#include "SDL_sysevents.h"
+#include "SDL_events_c.h"
+#include "SDL_riscosvideo.h"
+#include "SDL_riscosevents_c.h"
+#include "SDL_timer_c.h"
+#include "SDL_cursor_c.h"
+
+#include "memory.h"
+#include "stdlib.h"
+#include "ctype.h"
+
+#include "kernel.h"
+#include "swis.h"
+
+/* The translation table from a RISCOS internal key numbers to a SDL keysym */
+static SDLKey RO_keymap[SDLK_LAST];
+
+/* RISCOS Key codes */
+#define ROKEY_SHIFT 0
+#define ROKEY_CTRL  1
+#define ROKEY_ALT   2
+/* Left shift is first key we will check for */
+#define ROKEY_LEFT_SHIFT 3
+
+/* Need to ignore mouse buttons as they are processed separately */
+#define ROKEY_LEFT_MOUSE   9
+#define ROKEY_CENTRE_MOUSE 10
+#define ROKEY_RIGHT_MOUSE  11
+
+/* No key has been pressed return value*/
+#define ROKEY_NONE 255
+
+/* Id of last key in keyboard */
+#define ROKEY_LAST_KEY  124
+
+/* Size of array for all keys */
+#define ROKEYBD_ARRAYSIZE 125
+
+static char RO_pressed[ROKEYBD_ARRAYSIZE];
+
+static SDL_keysym *TranslateKey(int intkey, SDL_keysym *keysym, int pressed);
+
+
+void RISCOS_PollMouse(_THIS);
+void RISCOS_PollKeyboard();
+
+void RISCOS_PollMouseHelper(_THIS, int fullscreen);
+
+extern void DRenderer_FillBuffers();
+
+/* Timer running function */
+extern void RISCOS_CheckTimer();
+
+void FULLSCREEN_PumpEvents(_THIS)
+{
+    /* Current implementation requires keyboard and mouse polling */
+	RISCOS_PollKeyboard();
+	RISCOS_PollMouse(this);
+	DRenderer_FillBuffers();
+	if (SDL_timer_running) RISCOS_CheckTimer();
+}
+
+
+void RISCOS_InitOSKeymap(_THIS)
+{
+	int i;
+
+	/* Map the VK keysyms */
+	for ( i=0; i<SDL_TABLESIZE(RO_keymap); ++i )
+		RO_keymap[i] = SDLK_UNKNOWN;
+
+  RO_keymap[3] = SDLK_LSHIFT;
+  RO_keymap[4] = SDLK_LCTRL;
+  RO_keymap[5] = SDLK_LALT;
+  RO_keymap[6] = SDLK_RSHIFT;
+  RO_keymap[7] = SDLK_RCTRL;
+  RO_keymap[8] = SDLK_RALT;
+  RO_keymap[16] = SDLK_q;
+  RO_keymap[17] = SDLK_3;
+  RO_keymap[18] = SDLK_4;
+  RO_keymap[19] = SDLK_5;
+  RO_keymap[20] = SDLK_F4;
+  RO_keymap[21] = SDLK_8;
+  RO_keymap[22] = SDLK_F7;
+  RO_keymap[23] = SDLK_MINUS,
+  RO_keymap[25] = SDLK_LEFT;
+  RO_keymap[26] = SDLK_KP6;
+  RO_keymap[27] = SDLK_KP7;
+  RO_keymap[28] = SDLK_F11;
+  RO_keymap[29] = SDLK_F12;
+  RO_keymap[30] = SDLK_F10;
+  RO_keymap[31] = SDLK_SCROLLOCK;
+  RO_keymap[32] = SDLK_PRINT;
+  RO_keymap[33] = SDLK_w;
+  RO_keymap[34] = SDLK_e;
+  RO_keymap[35] = SDLK_t;
+  RO_keymap[36] = SDLK_7;
+  RO_keymap[37] = SDLK_i;
+  RO_keymap[38] = SDLK_9;
+  RO_keymap[39] = SDLK_0;
+  RO_keymap[41] = SDLK_DOWN;
+  RO_keymap[42] = SDLK_KP8;
+  RO_keymap[43] = SDLK_KP9;
+  RO_keymap[44] = SDLK_BREAK;
+  RO_keymap[45] = SDLK_BACKQUOTE;
+/*  RO_keymap[46] = SDLK_currency; TODO: Figure out if this has a value */
+  RO_keymap[47] = SDLK_BACKSPACE;
+  RO_keymap[48] = SDLK_1;
+  RO_keymap[49] = SDLK_2;
+  RO_keymap[50] = SDLK_d;
+  RO_keymap[51] = SDLK_r;
+  RO_keymap[52] = SDLK_6;
+  RO_keymap[53] = SDLK_u;
+  RO_keymap[54] = SDLK_o;
+  RO_keymap[55] = SDLK_p;
+  RO_keymap[56] = SDLK_LEFTPAREN;
+  RO_keymap[57] = SDLK_UP;
+  RO_keymap[58] = SDLK_KP_PLUS;
+  RO_keymap[59] = SDLK_KP_MINUS;
+  RO_keymap[60] = SDLK_KP_ENTER;
+  RO_keymap[61] = SDLK_INSERT;
+  RO_keymap[62] = SDLK_HOME;
+  RO_keymap[63] = SDLK_PAGEUP;
+  RO_keymap[64] = SDLK_CAPSLOCK;
+  RO_keymap[65] = SDLK_a;
+  RO_keymap[66] = SDLK_x;
+  RO_keymap[67] = SDLK_f;
+  RO_keymap[68] = SDLK_y;
+  RO_keymap[69] = SDLK_j;
+  RO_keymap[70] = SDLK_k;
+  RO_keymap[72] = SDLK_SEMICOLON;
+  RO_keymap[73] = SDLK_RETURN;
+  RO_keymap[74] = SDLK_KP_DIVIDE;
+  RO_keymap[76] = SDLK_KP_PERIOD;
+  RO_keymap[77] = SDLK_NUMLOCK;
+  RO_keymap[78] = SDLK_PAGEDOWN;
+  RO_keymap[79] = SDLK_QUOTE;
+  RO_keymap[81] = SDLK_s;
+  RO_keymap[82] = SDLK_c;
+  RO_keymap[83] = SDLK_g;
+  RO_keymap[84] = SDLK_h;
+  RO_keymap[85] = SDLK_n;
+  RO_keymap[86] = SDLK_l;
+  RO_keymap[87] = SDLK_SEMICOLON;
+  RO_keymap[88] = SDLK_RIGHTPAREN;
+  RO_keymap[89] = SDLK_DELETE;
+  RO_keymap[90] = SDLK_KP_MINUS;
+  RO_keymap[91] = SDLK_KP_MULTIPLY;
+  RO_keymap[93] = SDLK_EQUALS;
+  RO_keymap[94] = SDLK_BACKSLASH;
+  RO_keymap[96] = SDLK_TAB;
+  RO_keymap[97] = SDLK_z;
+  RO_keymap[98] = SDLK_SPACE;
+  RO_keymap[99] = SDLK_v;
+  RO_keymap[100] = SDLK_b;
+  RO_keymap[101] = SDLK_m;
+  RO_keymap[102] = SDLK_COMMA;
+  RO_keymap[103] = SDLK_PERIOD;
+  RO_keymap[104] = SDLK_SLASH;
+  RO_keymap[105] = SDLK_END;
+  RO_keymap[106] = SDLK_KP0;
+  RO_keymap[107] = SDLK_KP1;
+  RO_keymap[108] = SDLK_KP3;
+  RO_keymap[112] = SDLK_ESCAPE;
+  RO_keymap[113] = SDLK_F1;
+  RO_keymap[114] = SDLK_F2;
+  RO_keymap[115] = SDLK_F3;
+  RO_keymap[116] = SDLK_F5;
+  RO_keymap[117] = SDLK_F6;
+  RO_keymap[118] = SDLK_F8;
+  RO_keymap[119] = SDLK_F9;
+  RO_keymap[120] = SDLK_HASH;
+  RO_keymap[121] = SDLK_RIGHT;
+  RO_keymap[122] = SDLK_KP4;
+  RO_keymap[123] = SDLK_KP5;
+  RO_keymap[124] = SDLK_KP2;
+
+  memset(RO_pressed, 0, ROKEYBD_ARRAYSIZE);
+}
+
+
+/* Variable for mouse relative processing */
+int mouse_relative = 0;
+
+/* Check to see if we need to enter or leave mouse relative mode */
+
+void RISCOS_CheckMouseMode(_THIS)
+{
+    /* If the mouse is hidden and input is grabbed, we use relative mode */
+    if ( !(SDL_cursorstate & CURSOR_VISIBLE) &&
+        (this->input_grab != SDL_GRAB_OFF) ) {
+            mouse_relative = 1;
+     } else {
+            mouse_relative = 0;
+     }
+}
+
+
+void RISCOS_PollMouse(_THIS)
+{
+   RISCOS_PollMouseHelper(this, 1);
+}
+
+extern int mouseInWindow;
+
+void WIMP_PollMouse(_THIS)
+{
+   /* Only poll when mouse is over the window */
+   if (!mouseInWindow) return;
+
+   RISCOS_PollMouseHelper(this, 0);
+}
+
+/* Static variables so only changes are reported */
+static Sint16 last_x = -1, last_y = -1;
+static int last_buttons = 0;
+
+/* Share routine between WIMP and FULLSCREEN for polling mouse and
+   passing on events */
+void RISCOS_PollMouseHelper(_THIS, int fullscreen)
+{
+    _kernel_swi_regs regs;
+    static int starting = 1;
+
+    if (_kernel_swi(OS_Mouse, &regs, &regs) == NULL)
+    {
+       Sint16 new_x = regs.r[0]; /* Initialy get as OS units */
+       Sint16 new_y = regs.r[1];
+
+/* Discard mouse events until the let go of the mouse after starting */
+       if (starting && regs.r[2] != 0) return;
+       else starting = 0;
+
+       if (new_x != last_x || new_y != last_y || last_buttons != regs.r[2])
+       {
+          /* Something changed so generate appropriate events */
+          int topLeftX, topLeftY;  /* Top left OS units */
+          int x, y;                /* Mouse position in SDL pixels */
+
+          if (fullscreen)
+          {
+             topLeftX = 0;
+             topLeftY = (this->hidden->height << this->hidden->yeig) - 1;
+          } else
+          {
+             int window_state[9];
+
+	         /* Get current window state */
+		     window_state[0] = this->hidden->window_handle;
+		     regs.r[1] = (unsigned int)window_state;
+		     _kernel_swi(Wimp_GetWindowState, &regs, &regs);
+
+             topLeftX = window_state[1];
+             topLeftY = window_state[4];
+          }
+
+		  /* Convert co-ordinates to workspace */
+		  x = new_x - topLeftX;
+          y = topLeftY - new_y; /* Y goes from top of window/screen */
+
+	 	  /* Convert OS units to pixels */
+	      x >>= this->hidden->xeig;
+		  y >>= this->hidden->yeig;
+
+          if (last_x != new_x || last_y != new_y)
+          {
+             if (mouse_relative)
+             {
+                int centre_x = SDL_VideoSurface->w/2;
+                int centre_y = SDL_VideoSurface->h/2;
+
+                if (centre_x != x || centre_y != y)
+                {
+                   if (SDL_VideoSurface) SDL_PrivateMouseMotion(0,1,x - centre_x, y - centre_y);
+                   last_x = topLeftX + (centre_x << this->hidden->xeig);
+                   last_y = topLeftY - (centre_y << this->hidden->yeig);
+
+                   /* Re-centre the mouse pointer, so we still get relative
+                      movement when the mouse is at the edge of the window
+                      or screen.
+                   */
+                   {
+                      unsigned char block[5];
+
+                      block[0] = 3; /* OSWORD move pointer sub-reason code */
+                      block[1] = last_x & 0xFF;
+                      block[2] = (last_x >> 8) & 0xFF;
+                      block[3] = last_y & 0xFF;
+                      block[4] = (last_y >> 8) & 0xFF;
+                       
+                      regs.r[0] = 21; /* OSWORD pointer stuff code */
+                      regs.r[1] = (int)block;
+                      _kernel_swi(OS_Word, &regs, &regs);
+               	   }
+                }
+             } else
+             {
+                last_x = new_x;
+                last_y = new_y;
+                SDL_PrivateMouseMotion(0,0,x,y);
+             }
+          }
+
+          if (last_buttons != regs.r[2])
+          {
+             int changed = last_buttons ^ regs.r[2];
+             last_buttons = regs.r[2];
+             if (changed & 4) SDL_PrivateMouseButton((last_buttons & 4) ? SDL_PRESSED : SDL_RELEASED, SDL_BUTTON_LEFT, x, y);
+             if (changed & 2) SDL_PrivateMouseButton((last_buttons & 2) ? SDL_PRESSED : SDL_RELEASED, SDL_BUTTON_MIDDLE, x, y);
+             if (changed & 1) SDL_PrivateMouseButton((last_buttons & 1) ? SDL_PRESSED : SDL_RELEASED, SDL_BUTTON_RIGHT, x, y);
+          }
+       }
+    }
+}
+
+void RISCOS_PollKeyboard()
+{
+	int which_key = ROKEY_LEFT_SHIFT;
+	int j;
+	int min_key, max_key;
+	SDL_keysym key;
+
+	/* Scan the keyboard to see what is pressed */
+	while (which_key <= ROKEY_LAST_KEY)
+	{
+		which_key = (_kernel_osbyte(121, which_key, 0) & 0xFF);
+	    if (which_key != ROKEY_NONE)
+		{
+		    switch(which_key)
+		    {
+		    /* Skip over mouse keys */
+		    case ROKEY_LEFT_MOUSE:
+		    case ROKEY_CENTRE_MOUSE:
+		    case ROKEY_RIGHT_MOUSE:
+				which_key = ROKEY_RIGHT_MOUSE;
+				break;
+
+            /* Ignore keys that cause 2 internal number to be generated */
+			case 71: case 24: case 87: case 40:
+			    break;
+
+			default:
+				RO_pressed[which_key] += 2;
+				break;
+		    }
+			which_key++;
+		}
+	}
+
+	/* Generate key released messages */
+	min_key = ROKEY_LAST_KEY+1;
+	max_key = ROKEY_LEFT_SHIFT;
+
+	for (j = ROKEY_LEFT_SHIFT; j <= ROKEY_LAST_KEY; j++)
+	{
+		if (RO_pressed[j])
+		{
+			if (RO_pressed[j] == 1)
+			{
+				RO_pressed[j] = 0;
+				SDL_PrivateKeyboard(SDL_RELEASED, TranslateKey(j,&key,0));
+			} else 
+			{
+				if (j < min_key) min_key = j;
+				if (j > max_key) max_key = j;
+			}
+		}
+	}
+
+	/* Generate key pressed messages */
+	for (j = min_key; j <= max_key; j++)
+	{
+		if (RO_pressed[j])
+		{
+			if (RO_pressed[j] == 2)
+			{
+				SDL_PrivateKeyboard(SDL_PRESSED,TranslateKey(j,&key,1));
+			}
+			RO_pressed[j] = 1;
+		}
+	}
+}
+
+static SDL_keysym *TranslateKey(int intkey, SDL_keysym *keysym, int pressed)
+{
+	/* Set the keysym information */
+	keysym->scancode = (unsigned char) intkey;
+	keysym->sym = RO_keymap[intkey];
+	keysym->mod = KMOD_NONE;
+	keysym->unicode = 0;
+	if ( pressed && SDL_TranslateUNICODE )
+	{
+		int state;
+		int ch;
+
+		state = (_kernel_osbyte(202, 0, 255) & 0xFF);
+
+		/*TODO: better key to char mapping */
+
+		ch = keysym->sym; /* This should handle most keys */
+
+        if (intkey < 9)
+        {
+           ch = 0;
+
+        } else if (state & 64) /* Control on */
+		{
+			ch = ch & 31;
+
+		} else if ((state & 16) == 0) /* Caps lock is on */
+		{
+			if ((state & 128) == 0) /* Shift Enable off */
+			{
+				ch = toupper(ch);
+			}
+		} else if (state & 8) /* Shift on */
+		{
+			ch = toupper(ch);
+		}
+				
+		keysym->unicode = ch;
+	}
+	return(keysym);
+}
+
+/* end of SDL_riscosevents.c ... */
+