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92 lines
2.9 KiB
92 lines
2.9 KiB
#include "platform/switch/keyboard.h" |
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#include <cstdint> |
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#include <cstring> |
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#include <SDL.h> |
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#include <switch.h> |
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#include "utils/utf8.hpp" |
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static void switch_keyboard_get(std::string_view guide_text, std::string_view initial_text, char *buf, unsigned buf_len) |
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{ |
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Result rc = 0; |
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SwkbdConfig kbd; |
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rc = swkbdCreate(&kbd, 0); |
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if (R_SUCCEEDED(rc)) { |
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swkbdConfigMakePresetDefault(&kbd); |
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// swkbConfigSetGuide/InitialText both copy the input string. They expect a null terminated c-string but we're |
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// getting a string view which may be a substring of a larger std::string/c-string, so we copy to a temporary |
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// null-terminated string first for safety |
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if (!guide_text.empty()) { |
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std::string textCopy { guide_text }; |
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swkbdConfigSetGuideText(&kbd, textCopy.c_str()); |
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} |
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if (!initial_text.empty()) { |
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std::string textCopy { initial_text }; |
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swkbdConfigSetInitialText(&kbd, textCopy.c_str()); |
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} |
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swkbdConfigSetStringLenMax(&kbd, buf_len); |
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rc = swkbdShow(&kbd, buf, buf_len); |
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swkbdClose(&kbd); |
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} |
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} |
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static int get_utf8_character_bytes(const uint8_t *uc) |
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{ |
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if (uc[0] < 0x80) { |
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return 1; |
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} else if ((uc[0] & 0xe0) == 0xc0 && (uc[1] & 0xc0) == 0x80) { |
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return 2; |
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} else if ((uc[0] & 0xf0) == 0xe0 && (uc[1] & 0xc0) == 0x80 && (uc[2] & 0xc0) == 0x80) { |
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return 3; |
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} else if ((uc[0] & 0xf8) == 0xf0 && (uc[1] & 0xc0) == 0x80 && (uc[2] & 0xc0) == 0x80 && (uc[3] & 0xc0) == 0x80) { |
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return 4; |
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} else { |
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return 1; |
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} |
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} |
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static void switch_create_and_push_sdlkey_event(uint32_t event_type, SDL_Scancode scan, SDL_Keycode key) |
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{ |
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SDL_Event event; |
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event.type = event_type; |
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event.key.keysym.scancode = scan; |
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event.key.keysym.sym = key; |
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event.key.keysym.mod = 0; |
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SDL_PushEvent(&event); |
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} |
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void switch_start_text_input(std::string_view guide_text, std::string_view initial_text, unsigned max_length) |
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{ |
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char text[max_length] = { '\0' }; |
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switch_keyboard_get(guide_text, initial_text, text, sizeof(text)); |
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for (int i = 0; i < 600; i++) { |
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switch_create_and_push_sdlkey_event(SDL_KEYDOWN, SDL_SCANCODE_BACKSPACE, SDLK_BACKSPACE); |
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switch_create_and_push_sdlkey_event(SDL_KEYUP, SDL_SCANCODE_BACKSPACE, SDLK_BACKSPACE); |
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} |
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for (int i = 0; i < 600; i++) { |
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switch_create_and_push_sdlkey_event(SDL_KEYDOWN, SDL_SCANCODE_DELETE, SDLK_DELETE); |
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switch_create_and_push_sdlkey_event(SDL_KEYUP, SDL_SCANCODE_DELETE, SDLK_DELETE); |
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} |
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if (text[0] == '\0') { |
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devilution::CopyUtf8(text, initial_text, sizeof(text)); |
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} |
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const uint8_t *utf8_text = (uint8_t *)text; |
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for (int i = 0; i < sizeof(text) && utf8_text[i];) { |
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int bytes_in_char = get_utf8_character_bytes(&utf8_text[i]); |
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SDL_Event textinput_event; |
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textinput_event.type = SDL_TEXTINPUT; |
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for (int n = 0; n < bytes_in_char; n++) { |
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textinput_event.text.text[n] = text[i + n]; |
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} |
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textinput_event.text.text[bytes_in_char] = 0; |
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SDL_PushEvent(&textinput_event); |
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i += bytes_in_char; |
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} |
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}
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