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+/*
+ 3dsspec - Nintendo 3DS Spectrum emulator.
+
+ Copyright (C) 2021 Ian Cowburn <ianc@noddybox.co.uk>
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License
+ as published by the Free Software Foundation; either version 2
+ of the License, or (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, see <http://www.gnu.org/licenses/>
+
+ $Id: keyboard.c 64 2008-12-05 00:37:26Z ianc $
+*/
+
+#include <3ds.h>
+
+#include "keyboard.h"
+#include "framebuffer.h"
+#include "stream.h"
+
+/* ---------------------------------------- STATIC DATA
+*/
+
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+static int selection_on = COL_WHITE;
+static int selection_off = COL_BLACK;
+
+static struct
+{
+ int state;
+ int new_state;
+ int handled;
+ int is_sticky;
+} key_state[NUM_SOFT_KEYS];
+
+static SoftKey pad_left_key = SK_5;
+static SoftKey pad_right_key = SK_8;
+static SoftKey pad_up_key = SK_7;
+static SoftKey pad_down_key = SK_6;
+static SoftKey pad_A_key = SK_0;
+static SoftKey pad_B_key = SK_NEWLINE;
+static SoftKey pad_X_key = NUM_SOFT_KEYS;
+static SoftKey pad_Y_key = NUM_SOFT_KEYS;
+static SoftKey pad_R_key = NUM_SOFT_KEYS;
+static SoftKey pad_L_key = NUM_SOFT_KEYS;
+static SoftKey pad_start_key = NUM_SOFT_KEYS;
+static SoftKey pad_select_key = NUM_SOFT_KEYS;
+
+#define CLEAR_STATE(SHORTCUT) \
+ do \
+ { \
+ if (SHORTCUT != NUM_SOFT_KEYS && \
+ !key_state[SHORTCUT].handled) \
+ { \
+ key_state[SHORTCUT].new_state = FALSE; \
+ } \
+ } while(0)
+
+#define CHECK_STATE(KEYS,BIT,CODE,SHORTCUT,USE_SHORTCUT) \
+ do \
+ { \
+ key_state[CODE].new_state = (KEYS & BIT); \
+ if (USE_SHORTCUT && SHORTCUT != NUM_SOFT_KEYS && \
+ !key_state[SHORTCUT].handled && (KEYS & BIT)) \
+ { \
+ key_state[SHORTCUT].new_state = TRUE; \
+ } \
+ } while(0)
+
+#define CELL_WIDTH 32
+#define CELL_HEIGHT 48
+
+static const char *keynames[]=
+{
+ "1", "2", "3", "4", "5",
+ "6", "7", "8", "9", "0",
+ "Q", "W", "E", "R", "T",
+ "Y", "U", "I", "O", "P",
+ "A", "S", "D", "F", "G",
+ "H", "J", "K", "L", "NEWLINE",
+ "SHIFT", "Z", "X", "C", "V",
+ "B", "N", "M", "PERIOD", "SPACE",
+
+ "ABOUT",
+ "CONFIG",
+ "JOYPAD UP",
+ "JOYPAD DOWN",
+ "JOYPAD LEFT",
+ "JOYPAD RIGHT",
+ "A BUTTON",
+ "B BUTTON",
+ "X BUTTON",
+ "Y BUTTON",
+ "RIGHT SHOULDER BUTTON",
+ "LEFT SHOULDER BUTTON",
+ "START BUTTON",
+ "SELECT BUTTON"
+};
+
+/* ---------------------------------------- PRIVATE INTERFACES
+*/
+static SoftKey LocatePress(const touchPosition *p)
+{
+ int kx=0,ky=0;
+ int key = NUM_SOFT_KEYS;
+
+ kx = p->px / CELL_WIDTH;
+ ky = p->py / CELL_HEIGHT;
+
+ key = kx + ky * 10;
+
+ if (key>SK_SPACE)
+ {
+ key = NUM_SOFT_KEYS;
+ }
+
+ return key;
+}
+
+
+static void DrawSelect(Framebuffer *fb, int key, int selected)
+{
+ int x,y;
+
+ x = (key % 10) * CELL_WIDTH;
+ y = (key / 10) * CELL_HEIGHT;
+
+ FB_Box(fb, x, fb->height - 1 - y, CELL_WIDTH, CELL_HEIGHT,
+ selected ? selection_on : selection_off);
+}
+
+
+static int GetEvent(SoftKeyEvent *ev, int map)
+{
+ static SoftKey last = NUM_SOFT_KEYS;
+ static int poll_index = -1;
+ Framebuffer lower;
+
+ FB_StartFrame(NULL, &lower);
+
+ /* Read the keys if this is a new loop
+ */
+ if (poll_index == -1)
+ {
+ int f;
+ u32 keys;
+
+ keys = keysHeld();
+
+ /* Clear the non-sticky keys
+ */
+ for(f=SK_1; f<=SK_CONFIG; f++)
+ {
+ key_state[f].handled = FALSE;
+
+ if (key_state[f].is_sticky)
+ {
+ key_state[f].new_state = key_state[f].state;
+ }
+ else
+ {
+ key_state[f].new_state = FALSE;
+ }
+ }
+
+ /* Check the soft keyboard
+ */
+ if (keys & KEY_TOUCH)
+ {
+ touchPosition tp;
+
+ hidTouchRead(&tp);
+
+ if (tp.py>192)
+ {
+ key_state[SK_CONFIG].new_state = TRUE;
+ }
+ else
+ {
+ SoftKey press;
+
+ press = LocatePress(&tp);
+
+ if (press != NUM_SOFT_KEYS)
+ {
+ key_state[press].handled = TRUE;
+
+ if (key_state[press].is_sticky)
+ {
+ if (last != press)
+ {
+ key_state[press].new_state =
+ !key_state[press].state;
+ }
+ }
+ else
+ {
+ key_state[press].new_state = TRUE;
+ }
+
+ last = press;
+ }
+ }
+ }
+ else
+ {
+ last = NUM_SOFT_KEYS;
+ }
+
+ /* Check non soft-keyboard controls
+ */
+ CHECK_STATE(keys, KEY_A, SK_PAD_A, pad_A_key, map);
+ CHECK_STATE(keys, KEY_B, SK_PAD_B, pad_B_key, map);
+ CHECK_STATE(keys, KEY_X, SK_PAD_X, pad_X_key, map);
+ CHECK_STATE(keys, KEY_Y, SK_PAD_Y, pad_Y_key, map);
+ CHECK_STATE(keys, KEY_R, SK_PAD_R, pad_R_key, map);
+ CHECK_STATE(keys, KEY_L, SK_PAD_L, pad_L_key, map);
+ CHECK_STATE(keys, KEY_START, SK_PAD_START, pad_start_key, map);
+ CHECK_STATE(keys, KEY_SELECT, SK_PAD_SELECT, pad_select_key, map);
+ CHECK_STATE(keys, KEY_UP, SK_PAD_UP, pad_up_key, map);
+ CHECK_STATE(keys, KEY_DOWN, SK_PAD_DOWN, pad_down_key, map);
+ CHECK_STATE(keys, KEY_LEFT, SK_PAD_LEFT, pad_left_key, map);
+ CHECK_STATE(keys, KEY_RIGHT, SK_PAD_RIGHT, pad_right_key, map);
+
+ /* Reset key event poll index
+ */
+ poll_index = 0;
+
+ /* Update any on-screen indicators
+ */
+ for(f=SK_1; f<SK_CONFIG; f++)
+ {
+ if (key_state[f].state != key_state[f].new_state)
+ {
+ DrawSelect(&lower, f, key_state[f].new_state);
+ }
+ }
+ }
+
+ while(poll_index < NUM_SOFT_KEYS &&
+ key_state[poll_index].state == key_state[poll_index].new_state)
+ {
+ poll_index++;
+ }
+
+ if (poll_index < NUM_SOFT_KEYS)
+ {
+ key_state[poll_index].state = key_state[poll_index].new_state;
+
+ ev->key = poll_index;
+ ev->pressed = key_state[poll_index].state;
+
+ return TRUE;
+ }
+ else
+ {
+ poll_index = -1;
+ return FALSE;
+ }
+}
+
+
+/* ---------------------------------------- PUBLIC INTERFACES
+*/
+void SK_DisplayKeyboard(void)
+{
+ int f;
+ Framebuffer lower;
+
+ FB_StartFrame(NULL, &lower);
+
+ FB_Blit(&lower,IMG_KEYBOARD,0,0);
+
+ /* Update any on-screen indicators
+ */
+ for(f=SK_1; f<SK_CONFIG; f++)
+ {
+ if (key_state[f].state)
+ {
+ DrawSelect(&lower, f, key_state[f].state);
+ }
+ }
+}
+
+
+int SK_GetEvent(SoftKeyEvent *ev)
+{
+ return GetEvent(ev,TRUE);
+}
+
+
+int SK_GetBareEvent(SoftKeyEvent *ev)
+{
+ return GetEvent(ev,FALSE);
+}
+
+
+void SK_SetSticky(SoftKey key, int is_sticky)
+{
+ key_state[key].is_sticky = is_sticky;
+
+ if (!is_sticky)
+ {
+ key_state[key].new_state = FALSE;
+ }
+}
+
+
+void SK_DefinePad(SoftKey pad, SoftKey key)
+{
+ switch(pad)
+ {
+ case SK_PAD_LEFT:
+ pad_left_key = key;
+ break;
+ case SK_PAD_RIGHT:
+ pad_right_key = key;
+ break;
+ case SK_PAD_UP:
+ pad_up_key = key;
+ break;
+ case SK_PAD_DOWN:
+ pad_down_key = key;
+ break;
+ case SK_PAD_A:
+ pad_A_key = key;
+ break;
+ case SK_PAD_B:
+ pad_B_key = key;
+ break;
+ case SK_PAD_X:
+ pad_X_key = key;
+ break;
+ case SK_PAD_Y:
+ pad_Y_key = key;
+ break;
+ case SK_PAD_R:
+ pad_R_key = key;
+ break;
+ case SK_PAD_L:
+ pad_L_key = key;
+ break;
+ case SK_PAD_START:
+ pad_start_key = key;
+ break;
+ case SK_PAD_SELECT:
+ pad_select_key = key;
+ break;
+ default:
+ break;
+ }
+}
+
+
+const char *SK_KeyName(SoftKey k)
+{
+ return keynames[k];
+}
+
+
+void SK_SaveSnapshot(FILE *fp)
+{
+ int f;
+
+ PUT_Long(fp, pad_left_key);
+ PUT_Long(fp, pad_right_key);
+ PUT_Long(fp, pad_up_key);
+ PUT_Long(fp, pad_down_key);
+ PUT_Long(fp, pad_A_key);
+ PUT_Long(fp, pad_B_key);
+ PUT_Long(fp, pad_X_key);
+ PUT_Long(fp, pad_Y_key);
+ PUT_Long(fp, pad_R_key);
+ PUT_Long(fp, pad_L_key);
+ PUT_Long(fp, pad_start_key);
+ PUT_Long(fp, pad_select_key);
+
+ for(f = 0; f < NUM_SOFT_KEYS; f++)
+ {
+ PUT_Long(fp, key_state[f].state);
+ PUT_Long(fp, key_state[f].new_state);
+ PUT_Long(fp, key_state[f].handled);
+ PUT_Long(fp, key_state[f].is_sticky);
+ }
+}
+
+
+void SK_LoadSnapshot(FILE *fp)
+{
+ int f;
+
+ pad_left_key = GET_Long(fp);
+ pad_right_key = GET_Long(fp);
+ pad_up_key = GET_Long(fp);
+ pad_down_key = GET_Long(fp);
+ pad_A_key = GET_Long(fp);
+ pad_B_key = GET_Long(fp);
+ pad_X_key = GET_Long(fp);
+ pad_Y_key = GET_Long(fp);
+ pad_R_key = GET_Long(fp);
+ pad_L_key = GET_Long(fp);
+ pad_start_key = GET_Long(fp);
+ pad_select_key = GET_Long(fp);
+
+ for(f = 0; f < NUM_SOFT_KEYS; f++)
+ {
+ key_state[f].state = GET_Long(fp);
+ key_state[f].new_state = GET_Long(fp);
+ key_state[f].handled = GET_Long(fp);
+ key_state[f].is_sticky = GET_Long(fp);
+ }
+}
+
+
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