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Implement keyboard input on RISC OS 

Partially based on a patch from http://www.riscos.info/websvn/listing.php?repname=gccsdk&path=%2Ftrunk%2Fautobuilder%2Flibraries%2Fsdl%2Flibsdl2%2F&rev=7174#a6401c766f408f1ea356e6977894cc6a5
Currently lacks support for mapping scancodes to keycodes.
This commit is contained in:
Cameron Cawley 2021-08-06 23:38:46 +01:00 committed by Sam Lantinga
parent f8a8ca3e1f
commit f7f54f0d04
5 changed files with 288 additions and 4 deletions
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108
src/video/riscos/SDL_riscosevents.c
View File

@ -22,18 +22,118 @@
#if SDL_VIDEO_DRIVER_RISCOS
/* Being a null driver, there's no event stream. We just define stubs for
most of the API. */
#include "../../events/SDL_events_c.h"
#include "SDL_log.h"
#include "SDL_riscosvideo.h"
#include "SDL_riscosevents_c.h"
#include "scancodes_riscos.h"
#include <kernel.h>
static SDL_Scancode
SDL_RISCOS_translate_keycode(int keycode)
{
SDL_Scancode scancode = SDL_SCANCODE_UNKNOWN;
if (keycode < SDL_arraysize(riscos_scancode_table)) {
scancode = riscos_scancode_table[keycode];
if (scancode == SDL_SCANCODE_UNKNOWN) {
SDL_Log("The key you just pressed is not recognized by SDL: %d", keycode);
}
}
return scancode;
}
void
RISCOS_PollKeyboard(_THIS)
{
SDL_VideoData *driverdata = (SDL_VideoData *)_this->driverdata;
Uint8 key = 2;
int i;
/* Check for key releases */
for (i = 0; i < RISCOS_MAX_KEYS_PRESSED; i++) {
if (driverdata->key_pressed[i] != 255) {
if ((_kernel_osbyte(129, driverdata->key_pressed[i] ^ 0xff, 0xff) & 0xff) != 255) {
SDL_SendKeyboardKey(SDL_RELEASED, SDL_RISCOS_translate_keycode(driverdata->key_pressed[i]));
driverdata->key_pressed[i] = 255;
}
}
}
/* Check for key presses */
while (key < 0xff) {
SDL_bool already_pressed = SDL_FALSE;
key = _kernel_osbyte(121, key + 1, 0) & 0xff;
switch (key) {
case 255:
/* Ignore mouse keys */
case 9:
case 10:
case 11:
/* Ignore keys with multiple INKEY codes */
case 24:
case 40:
case 71:
case 87:
break;
default:
/* Do we already know of this key? */
for (i = 0; i < RISCOS_MAX_KEYS_PRESSED; i++) {
if (driverdata->key_pressed[i] == key) {
already_pressed = SDL_TRUE;
break;
}
}
if (!already_pressed) {
SDL_SendKeyboardKey(SDL_PRESSED, SDL_RISCOS_translate_keycode(key));
/* Record the press so we can detect release later. */
for (i = 0; i < RISCOS_MAX_KEYS_PRESSED; i++) {
if (driverdata->key_pressed[i] == 255) {
driverdata->key_pressed[i] = key;
break;
}
}
}
}
}
}
int
RISCOS_InitEvents(_THIS)
{
SDL_VideoData *driverdata = (SDL_VideoData *) _this->driverdata;
int i, status;
for (i = 0; i < RISCOS_MAX_KEYS_PRESSED; i++)
driverdata->key_pressed[i] = 255;
status = (_kernel_osbyte(202, 0, 255) & 0xFF);
SDL_ToggleModState(KMOD_NUM, (status & (1 << 2)) == 0);
SDL_ToggleModState(KMOD_CAPS, (status & (1 << 4)) == 0);
/* Disable escape. */
_kernel_osbyte(229, 1, 0);
return 0;
}
void
RISCOS_PumpEvents(_THIS)
{
/* do nothing. */
RISCOS_PollKeyboard(_this);
}
void
RISCOS_QuitEvents(_THIS)
{
/* Re-enable escape. */
_kernel_osbyte(229, 0, 0);
}
#endif /* SDL_VIDEO_DRIVER_RISCOS */

2
src/video/riscos/SDL_riscosevents_c.h
View File

@ -26,7 +26,9 @@
#include "SDL_riscosvideo.h"
extern int RISCOS_InitEvents(_THIS);
extern void RISCOS_PumpEvents(_THIS);
extern void RISCOS_QuitEvents(_THIS);
#endif /* SDL_riscosevents_c_h_ */

17
src/video/riscos/SDL_riscosvideo.c
View File

@ -45,6 +45,7 @@ static void RISCOS_VideoQuit(_THIS);
static void
RISCOS_DeleteDevice(SDL_VideoDevice * device)
{
SDL_free(device->driverdata);
SDL_free(device);
}
@ -52,6 +53,7 @@ static SDL_VideoDevice *
RISCOS_CreateDevice(int devindex)
{
SDL_VideoDevice *device;
SDL_VideoData *phdata;
/* Initialize all variables that we clean on shutdown */
device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
@ -60,6 +62,16 @@ RISCOS_CreateDevice(int devindex)
return (0);
}
/* Initialize internal data */
phdata = (SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData));
if (phdata == NULL) {
SDL_OutOfMemory();
SDL_free(device);
return NULL;
}
device->driverdata = phdata;
/* Set the function pointers */
device->VideoInit = RISCOS_VideoInit;
device->VideoQuit = RISCOS_VideoQuit;
@ -89,6 +101,10 @@ VideoBootStrap RISCOS_bootstrap = {
static int
RISCOS_VideoInit(_THIS)
{
if (RISCOS_InitEvents(_this) < 0) {
return -1;
}
if (RISCOS_InitModes(_this) < 0) {
return -1;
}
@ -100,6 +116,7 @@ RISCOS_VideoInit(_THIS)
static void
RISCOS_VideoQuit(_THIS)
{
RISCOS_QuitEvents(_this);
}
#endif /* SDL_VIDEO_DRIVER_RISCOS */

7
src/video/riscos/SDL_riscosvideo.h
View File

@ -25,6 +25,13 @@
#include "../SDL_sysvideo.h"
#define RISCOS_MAX_KEYS_PRESSED 6
typedef struct SDL_VideoData
{
Uint8 key_pressed[RISCOS_MAX_KEYS_PRESSED];
} SDL_VideoData;
#endif /* SDL_riscosvideo_h_ */
/* vi: set ts=4 sw=4 expandtab: */

158
src/video/riscos/scancodes_riscos.h Normal file
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@ -0,0 +1,158 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2021 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include "SDL_scancode.h"
/* RISC OS key code to SDL_Keycode mapping table
Sources:
- https://www.riscosopen.org/wiki/documentation/show/Keyboard Scan Codes
*/
/* *INDENT-OFF* */
static SDL_Scancode const riscos_scancode_table[] = {
/* 0 */ SDL_SCANCODE_UNKNOWN, /* Shift */
/* 1 */ SDL_SCANCODE_UNKNOWN, /* Ctrl */
/* 2 */ SDL_SCANCODE_UNKNOWN, /* Alt */
/* 3 */ SDL_SCANCODE_LSHIFT,
/* 4 */ SDL_SCANCODE_LCTRL,
/* 5 */ SDL_SCANCODE_LALT,
/* 6 */ SDL_SCANCODE_RSHIFT,
/* 7 */ SDL_SCANCODE_RCTRL,
/* 8 */ SDL_SCANCODE_RALT,
/* 9 */ SDL_SCANCODE_UNKNOWN, /* Left mouse */
/* 10 */ SDL_SCANCODE_UNKNOWN, /* Center mouse */
/* 11 */ SDL_SCANCODE_UNKNOWN, /* Right mouse */
/* 12 */ SDL_SCANCODE_UNKNOWN,
/* 13 */ SDL_SCANCODE_UNKNOWN,
/* 14 */ SDL_SCANCODE_UNKNOWN,
/* 15 */ SDL_SCANCODE_UNKNOWN,
/* 16 */ SDL_SCANCODE_Q,
/* 17 */ SDL_SCANCODE_3,
/* 18 */ SDL_SCANCODE_4,
/* 19 */ SDL_SCANCODE_5,
/* 20 */ SDL_SCANCODE_F4,
/* 21 */ SDL_SCANCODE_8,
/* 22 */ SDL_SCANCODE_F7,
/* 23 */ SDL_SCANCODE_MINUS,
/* 24 */ SDL_SCANCODE_6, /* Duplicate of 52 */
/* 25 */ SDL_SCANCODE_LEFT,
/* 26 */ SDL_SCANCODE_KP_6,
/* 27 */ SDL_SCANCODE_KP_7,
/* 28 */ SDL_SCANCODE_F11,
/* 29 */ SDL_SCANCODE_F12,
/* 30 */ SDL_SCANCODE_F10,
/* 31 */ SDL_SCANCODE_SCROLLLOCK,
/* 32 */ SDL_SCANCODE_PRINTSCREEN,
/* 33 */ SDL_SCANCODE_W,
/* 34 */ SDL_SCANCODE_E,
/* 35 */ SDL_SCANCODE_T,
/* 36 */ SDL_SCANCODE_7,
/* 37 */ SDL_SCANCODE_I,
/* 38 */ SDL_SCANCODE_9,
/* 39 */ SDL_SCANCODE_0,
/* 40 */ SDL_SCANCODE_MINUS, /* Duplicate of 23 */
/* 41 */ SDL_SCANCODE_DOWN,
/* 42 */ SDL_SCANCODE_KP_8,
/* 43 */ SDL_SCANCODE_KP_9,
/* 44 */ SDL_SCANCODE_PAUSE,
/* 45 */ SDL_SCANCODE_GRAVE,
/* 46 */ SDL_SCANCODE_CURRENCYUNIT,
/* 47 */ SDL_SCANCODE_BACKSPACE,
/* 48 */ SDL_SCANCODE_1,
/* 49 */ SDL_SCANCODE_2,
/* 50 */ SDL_SCANCODE_D,
/* 51 */ SDL_SCANCODE_R,
/* 52 */ SDL_SCANCODE_6,
/* 53 */ SDL_SCANCODE_U,
/* 54 */ SDL_SCANCODE_O,
/* 55 */ SDL_SCANCODE_P,
/* 56 */ SDL_SCANCODE_LEFTBRACKET,
/* 57 */ SDL_SCANCODE_UP,
/* 58 */ SDL_SCANCODE_KP_PLUS,
/* 59 */ SDL_SCANCODE_KP_MINUS,
/* 60 */ SDL_SCANCODE_KP_ENTER,
/* 61 */ SDL_SCANCODE_INSERT,
/* 62 */ SDL_SCANCODE_HOME,
/* 63 */ SDL_SCANCODE_PAGEUP,
/* 64 */ SDL_SCANCODE_CAPSLOCK,
/* 65 */ SDL_SCANCODE_A,
/* 66 */ SDL_SCANCODE_X,
/* 67 */ SDL_SCANCODE_F,
/* 68 */ SDL_SCANCODE_Y,
/* 69 */ SDL_SCANCODE_J,
/* 70 */ SDL_SCANCODE_K,
/* 71 */ SDL_SCANCODE_2, /* Duplicate of 49 */
/* 72 */ SDL_SCANCODE_SEMICOLON, /* Duplicate of 87 */
/* 73 */ SDL_SCANCODE_RETURN,
/* 74 */ SDL_SCANCODE_KP_DIVIDE,
/* 75 */ SDL_SCANCODE_UNKNOWN,
/* 76 */ SDL_SCANCODE_KP_PERIOD,
/* 77 */ SDL_SCANCODE_NUMLOCKCLEAR,
/* 78 */ SDL_SCANCODE_PAGEDOWN,
/* 79 */ SDL_SCANCODE_APOSTROPHE,
/* 80 */ SDL_SCANCODE_UNKNOWN,
/* 81 */ SDL_SCANCODE_S,
/* 82 */ SDL_SCANCODE_C,
/* 83 */ SDL_SCANCODE_G,
/* 84 */ SDL_SCANCODE_H,
/* 85 */ SDL_SCANCODE_N,
/* 86 */ SDL_SCANCODE_L,
/* 87 */ SDL_SCANCODE_SEMICOLON,
/* 88 */ SDL_SCANCODE_RIGHTBRACKET,
/* 89 */ SDL_SCANCODE_DELETE,
/* 90 */ SDL_SCANCODE_KP_HASH,
/* 91 */ SDL_SCANCODE_KP_MULTIPLY,
/* 92 */ SDL_SCANCODE_UNKNOWN,
/* 93 */ SDL_SCANCODE_EQUALS,
/* 94 */ SDL_SCANCODE_NONUSBACKSLASH,
/* 95 */ SDL_SCANCODE_UNKNOWN,
/* 96 */ SDL_SCANCODE_TAB,
/* 97 */ SDL_SCANCODE_Z,
/* 98 */ SDL_SCANCODE_SPACE,
/* 99 */ SDL_SCANCODE_V,
/* 100 */ SDL_SCANCODE_B,
/* 101 */ SDL_SCANCODE_M,
/* 102 */ SDL_SCANCODE_COMMA,
/* 103 */ SDL_SCANCODE_PERIOD,
/* 104 */ SDL_SCANCODE_SLASH,
/* 105 */ SDL_SCANCODE_END,
/* 106 */ SDL_SCANCODE_KP_0,
/* 107 */ SDL_SCANCODE_KP_1,
/* 108 */ SDL_SCANCODE_KP_3,
/* 109 */ SDL_SCANCODE_UNKNOWN,
/* 110 */ SDL_SCANCODE_UNKNOWN,
/* 111 */ SDL_SCANCODE_UNKNOWN,
/* 112 */ SDL_SCANCODE_ESCAPE,
/* 113 */ SDL_SCANCODE_F1,
/* 114 */ SDL_SCANCODE_F2,
/* 115 */ SDL_SCANCODE_F3,
/* 116 */ SDL_SCANCODE_F5,
/* 117 */ SDL_SCANCODE_F6,
/* 118 */ SDL_SCANCODE_F8,
/* 119 */ SDL_SCANCODE_F9,
/* 120 */ SDL_SCANCODE_BACKSLASH,
/* 121 */ SDL_SCANCODE_RIGHT,
/* 122 */ SDL_SCANCODE_KP_4,
/* 123 */ SDL_SCANCODE_KP_5,
/* 124 */ SDL_SCANCODE_KP_2,
/* 125 */ SDL_SCANCODE_LGUI,
/* 126 */ SDL_SCANCODE_RGUI,
/* 127 */ SDL_SCANCODE_MENU
};
/* *INDENT-ON* */