mirror of
https://github.com/Oibaf66/frodo-wii.git
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364 lines
10 KiB
C++
364 lines
10 KiB
C++
/*********************************************************************
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*
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* Copyright (C) 2009, Simon Kagstrom
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*
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* Filename: VirtualKeyboard.c
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* Author: Simon Kagstrom <simon.kagstrom@gmail.com>
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* Description: A virtual keyboard
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*
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* $Id$
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*
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********************************************************************/
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#include <SDL.h>
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#include <SDL_ttf.h>
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#include "virtual_keyboard.hh"
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#include "utils.hh"
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typedef struct virtkey
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{
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const char *name;
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int kc;
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bool is_shift;
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bool is_done;
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} virtkey_t;
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/*
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C64 keyboard matrix:
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Bit 7 6 5 4 3 2 1 0
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0 CUD F5 F3 F1 F7 CLR RET DEL
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1 SHL E S Z 4 A W 3
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2 X T F C 6 D R 5
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3 V U H B 8 G Y 7
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4 N O K M 0 J I 9
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5 , @ : . - L P +
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6 / ^ = SHR HOM ; * <20>
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7 R/S Q C= SPC 2 CTL <- 1
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*/
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#define MATRIX(a,b) (((a) << 3) | (b))
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#define K(name, a,b) \
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{ name, MATRIX(a,b), false, false }
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#define S(name, a,b) \
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{ name, MATRIX(a,b), true, false }
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#define N(name) \
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{ name, -1, false, false }
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#define D(name) \
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{ name, -1, false, true }
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#define J(name, v) \
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{ name, 0x40 | (v), false, false }
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#define KEY_COLS 15
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#define KEY_ROWS 8
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static virtkey_t keys[KEY_COLS * KEY_ROWS] = {
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K("<-",7,1), K("1", 7,0), K("2", 7,3), K("3", 1,0), K("4", 1,3), K("5", 2,0), K("6", 2,3), K("7", 3,0), K("8", 3,3), K("9", 4,0), K("0", 4,3), K("+", 5,0), K("-", 5,3), K("£", 6,0), K("Hom", 6,3),
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K("Cr", 7,2), K("Q", 7,6), K("W", 1,1), K("E", 1,6), K("R", 2,1), K("T", 2,6), K("Y", 3,1), K("U", 3,6), K("I", 4,1), K("O", 4,6), K("P", 5,1), K("@", 5,6), K("*", 6,1), K("Au", 6,6),K("Rstr",4,0),
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K("R/Stp", 7,7), K(NULL,0,0), K("A", 1,2), K("S", 1,5), K("D", 2,2), K("F", 2,5), K("G", 3,2), K("H", 3,5), K("J", 4,2), K("K", 4,5), K("L", 5,2), K(":", 5,5), K(";", 6,2), K("=", 6,5), K("Ret", 0,1),
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K("C=", 7,5), S("Shft",1,7),K(NULL,0,0),K("Z", 1,4), K("X", 2,7), K("C", 2,4), K("V", 3,7), K("B", 3,4), K("N", 4,7), K("M", 4,4), K(",", 5,7), K(".", 5,4), K("/", 6,7), K("Dwn",0,7),K("Rgt", 0,2),
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N("None"), K(NULL,0,0), K(NULL,0,0), K("space", 7,4),K(0, 0,0),K(NULL,0,0), K("f1",0,4), K("f3",0,5), K("f5",0,6), K("f7",0,3), K("Del",0,0),K(NULL,0,0), K(NULL,0,0), K(NULL,0,0), D("DONE"),
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K(NULL,0,0), K(NULL,0,0), K(NULL,0,0), K(NULL,0,0), K(0, 0,0),J("Joystick up",1),K(0, 0,0),K(NULL,0,0), K(NULL,0,0), K(NULL,0,0), K(NULL, 0,0),K(NULL,0,0), K(NULL,0,0), K(NULL,0,0), K(NULL, 0,0),
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J("Joystick left",4),K(0, 0,0), K(NULL,0,0), K(NULL,0,0), K(0,0,0),J("Joystick fire",0x10),K(0,0,0),K(0,0,0), K(NULL,0,0), K(0,0,0),J("Joystick right",8),K(0, 0,0),K(0, 0,0), K(NULL,0,0), K(NULL,0,0),
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K(NULL,0,0), K(0, 0,0), K(NULL,0,0), K(NULL,0,0), K(0,0,0),J("Joystick down",2),K(0,0,0),K(NULL,0,0),K(NULL,0,0), K(NULL,0,0), K(NULL,0,0), K(NULL,0,0), K(NULL, 0,0),K(NULL,0,0), K(NULL, 0,0),
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};
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static const char *shifted_names[KEY_COLS * KEY_ROWS] = {
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NULL, "!", "\"", "#", "$", "%", "&", "'", "(", ")", NULL, NULL, NULL, NULL, "Clr",
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "[", "]", NULL, NULL,
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, "<", ">", "?", "Up", "Lft",
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NULL, NULL, NULL, NULL, NULL, NULL, "f2", "f4", "f6", "f8", "Ins", NULL, NULL, NULL, NULL,
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};
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VirtualKeyboard::VirtualKeyboard(TTF_Font *font) : Widget()
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{
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this->font = font;
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this->sel_x = 0;
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this->sel_y = 0;
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this->shift_on = false;
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this->is_active = false;
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this->buf_head = 0;
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memset(this->buf, 0, sizeof(this->buf));
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memset(this->stringListeners, 0, sizeof(this->stringListeners));
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memset(this->keyListeners, 0, sizeof(this->keyListeners));
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}
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void VirtualKeyboard::draw(SDL_Surface *where, int x, int y, int w, int h)
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{
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int screen_w = where->w;
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int screen_h = where->h;
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int key_w = 36;
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int key_h = 36;
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int border_x = (screen_w - (key_w * KEY_COLS)) / 2;
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int border_y = (screen_h - (key_h * KEY_ROWS)) / 2;
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SDL_Rect bg_rect = {border_x, border_y,
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key_w * KEY_COLS, key_h * KEY_ROWS};
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SDL_FillRect(where, &bg_rect,
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SDL_MapRGB(where->format, 0x00, 0x80, 0x80));
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for (int y = 0; y < KEY_ROWS; y++ )
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{
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for (int x = 0; x < KEY_COLS; x++ )
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{
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int which = y * KEY_COLS + x;
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virtkey_t key = keys[which];
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int r = 255, g = 255, b = 255;
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const char *what = key.name;
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/* Skip empty positions */
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if (key.name == NULL)
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continue;
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if (this->shift_on && shifted_names[which])
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what = shifted_names[which];
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if ( key.is_done )
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r = 0;
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if ( (x == this->sel_x && y == this->sel_y) ||
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(this->shift_on && key.is_shift))
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b = 0;
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#if 0
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menu_print_font(where, r, g, b,
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x * key_w + border_x, y * key_h + border_y,
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what);
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#endif
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}
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}
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}
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void VirtualKeyboard::selectNext(int dx, int dy)
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{
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int next_x = (this->sel_x + dx) % KEY_COLS;
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int next_y = (this->sel_y + dy) % KEY_ROWS;
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virtkey_t key;
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if (next_x < 0)
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next_x = KEY_COLS + next_x;
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if (next_y < 0)
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next_y = KEY_ROWS + next_y;
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this->sel_x = next_x;
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this->sel_y = next_y;
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key = keys[ next_y * KEY_COLS + next_x ];
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/* Skip the empty spots */
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if (key.name == NULL)
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{
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if (dy != 0) /* Look left */
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this->selectNext(-1, 0);
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else
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this->selectNext(dx, dy);
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}
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}
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void VirtualKeyboard::toggleShift()
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{
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this->shift_on = !this->shift_on;
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}
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const char *VirtualKeyboard::keycodeToString(int kc)
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{
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bool shifted = kc & 0x80;
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int kc_raw = kc & ~0x80;
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const char *out = "Unknown";
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if (kc < 0)
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return "None";
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/* Just loop through all of them */
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for (int i = 0; i < KEY_COLS * KEY_ROWS; i++)
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{
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virtkey_t key = keys[i];
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if (key.kc == kc_raw && key.name != NULL)
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{
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out = key.name;
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if (shifted && shifted_names[i])
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out = shifted_names[i];
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break;
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}
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}
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return out;
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}
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int VirtualKeyboard::charToKeycode(char c)
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{
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for (int i = 0; i < KEY_COLS * KEY_ROWS; i++)
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{
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virtkey_t key = keys[i];
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if (key.name != NULL)
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{
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if (strlen(key.name) == 1)
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{
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if (key.name[0] == c)
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return key.kc;
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if (shifted_names[i] && strlen(shifted_names[i]) == 1 &&
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shifted_names[i][0] == c)
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return key.kc | 0x80;
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}
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/* OK, ugly special cases, but these are pretty important */
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if (c == ' ' && strcmp(key.name, "space") == 0)
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return key.kc;
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if (c == '\n' && strcmp(key.name, "Ret") == 0)
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return key.kc;
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}
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}
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return -1;
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}
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const char VirtualKeyboard::keycodeToChar(int kc)
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{
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const char *s = this->keycodeToString(kc);
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if (strcmp(s, "space") == 0)
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return ' ';
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if (strcmp(s, "Ret") == 0)
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return '\n';
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if (strcmp(s, "Del") == 0)
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return '\b';
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/* NULL is never, ever returned */
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return s[0];
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}
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void VirtualKeyboard::registerListener(KeyListener *kl)
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{
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int n_listeners = sizeof(this->keyListeners) / sizeof(*this->keyListeners);
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int i;
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for (i = 0; i < n_listeners; i++)
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if (!this->keyListeners[i])
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break;
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panic_if(i == n_listeners,
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"No free listeners!\n");
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this->keyListeners[i] = kl;
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}
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/* Templates FTW! */
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void VirtualKeyboard::registerListener(StringListener *sl)
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{
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int n_listeners = sizeof(this->stringListeners) / sizeof(*this->stringListeners);
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int i;
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for (i = 0; i < n_listeners; i++)
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if (!this->stringListeners[i])
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break;
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panic_if(i == n_listeners,
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"No free listeners!\n");
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this->stringListeners[i] = sl;
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}
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void VirtualKeyboard::unregisterListener(KeyListener *kl)
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{
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int n_listeners = sizeof(this->keyListeners) / sizeof(*this->keyListeners);
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for (int i = 0; i < n_listeners; i++)
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{
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if (this->keyListeners[i] == kl)
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this->keyListeners[i] = NULL;
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}
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}
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void VirtualKeyboard::unregisterListener(StringListener *sl)
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{
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int n_listeners = sizeof(this->stringListeners) / sizeof(*this->stringListeners);
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for (int i = 0; i < n_listeners; i++)
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{
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if (this->stringListeners[i] == sl)
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this->stringListeners[i] = NULL;
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}
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}
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void VirtualKeyboard::activate()
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{
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this->is_active = true;
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memset(this->buf, 0, sizeof(this->buf));
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this->buf_head = 0;
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}
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void VirtualKeyboard::runLogic()
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{
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event_t ev;
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if (!this->is_active)
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return;
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ev = this->popEvent();
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if (ev == EVENT_NONE)
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return;
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if (ev & KEY_UP)
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this->selectNext(0, -1);
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else if (ev & KEY_DOWN)
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this->selectNext(0, 1);
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else if (ev & KEY_LEFT)
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this->selectNext(-1, 0);
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else if (ev & KEY_RIGHT)
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this->selectNext(1, 0);
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else if (ev & KEY_ESCAPE)
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this->deactivate();
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else if (ev & KEY_SELECT)
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{
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virtkey_t *key = &keys[ this->sel_y * KEY_COLS + this->sel_x ];
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if (!key)
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return;
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if (key->is_shift == true)
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this->toggleShift();
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else if (key->is_done)
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{
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int n_listeners = sizeof(this->stringListeners) / sizeof(*this->stringListeners);
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for (int i = 0; i < n_listeners; i++)
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{
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if (this->stringListeners[i])
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this->stringListeners[i]->stringCallback(this->buf);
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}
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/* We're done! */
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this->deactivate();
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}
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else if (strcmp(key->name, "Del") == 0)
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{
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if (this->buf_head > 1)
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{
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this->buf[this->buf_head - 1] = ' ';
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this->buf_head -= 2;
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}
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}
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else
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{
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int n_listeners = sizeof(this->keyListeners) / sizeof(*this->keyListeners);
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char c;
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/* Add to buf */
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c = this->keycodeToChar( this->shift_on ? key->kc | 0x80 : key->kc );
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this->buf[this->buf_head] = c;
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this->buf_head++;
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if (this->buf_head >= sizeof(this->buf) - 1)
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this->buf_head = 0; /* OK, not good, but well... */
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for (int i = 0; i < n_listeners; i++)
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{
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if (this->keyListeners[i])
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this->keyListeners[i]->keyCallback(this->shift_on,
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key->name);
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}
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}
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}
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}
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/* The singleton */
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VirtualKeyboard *VirtualKeyboard::kbd;
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