mirror of
https://github.com/Oibaf66/frodo-wii.git
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255 lines
7.3 KiB
C++
255 lines
7.3 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 "menu.h"
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#include "VirtualKeyboard.h"
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typedef struct
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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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} 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 }
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#define S(name, a,b) \
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{ name, MATRIX(a,b), true }
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#define N(name) \
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{ name, -1, false }
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#define KEY_COLS 15
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#define KEY_ROWS 5
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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", 2,2), K("t", 2,6), K("y", 3,1), K("u", 3,6), K("i", 4,1), K("o", 6,6), 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(0, 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("Sh",1,7), 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(NULL,0,0), K("Dwn", 0,7),K("Rgt", 0,2),
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N("None"), K(0, 0,0), K(0, 0,0), K("space", 7,4),K(0, 0,0),K(0, 0,0), K("f1", 0,4),K("f3", 0,5),K("f5", 0,6),K("f7", 0,3),K(0, 0,0), K(0, 0,0), K(0, 0,0), K(0, 0,0), K("Del", 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", NULL, NULL, NULL, NULL, "Ins",
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};
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VirtualKeyboard::VirtualKeyboard(SDL_Surface *screen, TTF_Font *font)
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{
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this->screen = screen;
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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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memset(this->buf, 0, sizeof(this->buf));
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}
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void VirtualKeyboard::draw()
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{
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int screen_w = this->screen->w;
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int screen_h = this->screen->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(this->screen, &bg_rect,
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SDL_MapRGB(screen->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 ( (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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menu_print_font(this->screen, this->font, 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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}
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}
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}
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void VirtualKeyboard::select_next(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->select_next(-1, 0);
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else
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this->select_next(dx, dy);
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}
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}
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void VirtualKeyboard::toggle_shift()
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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::keycode_to_string(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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const char VirtualKeyboard::get_char(int kc)
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{
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/* NULL is never, ever returned */
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return this->keycode_to_string(kc)[0];
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}
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int VirtualKeyboard::get_key_internal()
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{
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int kc = -1;
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while(1)
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{
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uint32_t k;
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this->draw();
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SDL_Flip(this->screen);
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k = menu_wait_key_press();
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if (k & KEY_UP)
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this->select_next(0, -1);
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else if (k & KEY_DOWN)
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this->select_next(0, 1);
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else if (k & KEY_LEFT)
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this->select_next(-1, 0);
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else if (k & KEY_RIGHT)
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this->select_next(1, 0);
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else if (k & KEY_ESCAPE)
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return -2;
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else if (k & 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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kc = key.kc;
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if (this->shift_on)
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kc |= 0x80;
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if (key.is_shift == true)
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this->toggle_shift();
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else
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return kc;
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}
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}
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return kc;
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}
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int VirtualKeyboard::get_key()
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{
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SDL_FillRect(this->screen, 0, SDL_MapRGB(screen->format, 0x00, 0x80, 0x80));
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return this->get_key_internal();
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}
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const char *VirtualKeyboard::get_string()
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{
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int cnt = 0;
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SDL_FillRect(this->screen, 0, SDL_MapRGB(screen->format, 0x00, 0x80, 0x80));
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memset(this->buf, 0, sizeof(this->buf));
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while (true)
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{
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int kc = this->get_key_internal();
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/* Abort or None */
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if (kc == -2 || kc == -1)
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return NULL;
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/* Return */
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if (kc == MATRIX(0, 1))
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return this->buf;
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this->buf[cnt] = this->get_char(kc);
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cnt++;
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if (cnt >= sizeof(this->buf))
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return this->buf;
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}
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/* Not reachable */
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return NULL;
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}
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