134{
135 int res = -1;
136 ssize_t LastActiveTextInput = -1;
137 ssize_t CurrentActiveTextInput = next(-1);
138
139 if (!_window || !_renderer)
140 return -2;
141
142 try
143 {
144 bool running = true;
145 std::vector<SDL_Keycode> pressed;
146 while (running)
147 {
148 if (!clear_window(_renderer))
149 throw;
150
151 if (!update(_renderer))
152 throw;
153
154 if (!_buttons.update(_renderer))
155 throw;
156
157 SDL_Event event = {};
158 SDL_WaitEvent(&event);
159 switch (event.type)
160 {
161 case SDL_KEYUP:
162 {
163 auto it = std::remove(pressed.begin(), pressed.end(), event.key.keysym.sym);
164 pressed.erase(it, pressed.end());
165
166 switch (event.key.keysym.sym)
167 {
168 case SDLK_BACKSPACE:
169 {
170 auto cur = get(CurrentActiveTextInput);
171 if (cur)
172 {
173 if (!cur->remove_str(_renderer, 1))
174 throw;
175 }
176 }
177 break;
178 case SDLK_TAB:
179 CurrentActiveTextInput = next(CurrentActiveTextInput);
180 break;
181 case SDLK_RETURN:
182 case SDLK_RETURN2:
183 case SDLK_KP_ENTER:
184 running = false;
185 res = INPUT_BUTTON_ACCEPT;
186 break;
187 case SDLK_ESCAPE:
188 running = false;
189 res = INPUT_BUTTON_CANCEL;
190 break;
191 case SDLK_v:
192 if (pressed.size() == 2)
193 {
194 if ((pressed[0] == SDLK_LCTRL) || (pressed[0] == SDLK_RCTRL))
195 {
196 auto cur = get(CurrentActiveTextInput);
197 if (cur)
198 {
199 auto text = SDL_GetClipboardText();
200 cur->set_str(_renderer, text);
201 }
202 }
203 }
204 break;
205 default:
206 break;
207 }
208 }
209 break;
210 case SDL_KEYDOWN:
211 pressed.push_back(event.key.keysym.sym);
212 break;
213 case SDL_TEXTINPUT:
214 {
215 auto cur = get(CurrentActiveTextInput);
216 if (cur)
217 {
218 if (!cur->append_str(_renderer, event.text.text))
219 throw;
220 }
221 }
222 break;
223 case SDL_MOUSEMOTION:
224 {
225 auto TextInputIndex = get_index(event.button);
226 for (auto& cur : _list)
227 {
228 if (!cur.set_mouseover(_renderer, false))
229 throw;
230 }
231 if (TextInputIndex >= 0)
232 {
233 auto& cur = _list[static_cast<size_t>(TextInputIndex)];
234 if (!cur.set_mouseover(_renderer, true))
235 throw;
236 }
237
238 _buttons.set_mouseover(event.button.x, event.button.y);
239 }
240 break;
241 case SDL_MOUSEBUTTONDOWN:
242 {
243 auto val = get_index(event.button);
244 if (valid(val))
245 CurrentActiveTextInput = val;
246
247 auto button = _buttons.get_selected(event.button);
248 if (button)
249 {
250 running = false;
251 if (button->id() == INPUT_BUTTON_CANCEL)
252 res = INPUT_BUTTON_CANCEL;
253 else
254 res = INPUT_BUTTON_ACCEPT;
255 }
256 }
257 break;
258 case SDL_QUIT:
259 res = INPUT_BUTTON_CANCEL;
260 running = false;
261 break;
262 default:
263 break;
264 }
265
266 if (LastActiveTextInput != CurrentActiveTextInput)
267 {
268 if (CurrentActiveTextInput < 0)
269 SDL_StopTextInput();
270 else
271 SDL_StartTextInput();
272 LastActiveTextInput = CurrentActiveTextInput;
273 }
274
275 for (auto& cur : _list)
276 {
277 if (!cur.set_highlight(_renderer, false))
278 throw;
279 }
280 auto cur = get(CurrentActiveTextInput);
281 if (cur)
282 {
283 if (!cur->set_highlight(_renderer, true))
284 throw;
285 }
286
287 SDL_RenderPresent(_renderer);
288 }
289
290 for (auto& cur : _list)
291 result.push_back(cur.value());
292 }
293 catch (...)
294 {
295 res = -2;
296 }
297
298 return res;
299}