215 lines
4.4 KiB
C++
215 lines
4.4 KiB
C++
#include "sdl_selectlist.hpp"
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static const Uint32 vpadding = 5;
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SdlSelectList::SdlSelectList(const std::string& title, const std::vector<std::string>& labels)
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: _window(nullptr), _renderer(nullptr)
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{
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TTF_Init();
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const size_t widget_height = 50;
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const size_t widget_width = 600;
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const size_t total_height = labels.size() * (widget_height + vpadding) + vpadding;
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_window = SDL_CreateWindow(title.c_str(), SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED,
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widget_width, total_height + widget_height, 0);
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if (_window == nullptr)
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{
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widget_log_error(-1, "SDL_CreateWindow");
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}
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else
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{
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_renderer = SDL_CreateRenderer(_window, -1, SDL_RENDERER_ACCELERATED);
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if (_renderer == nullptr)
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{
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widget_log_error(-1, "SDL_CreateRenderer");
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}
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else
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{
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SDL_Rect rect = { 0, 0, widget_width, widget_height };
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for (auto& label : labels)
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{
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_list.push_back({ _renderer, label, rect });
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rect.y += widget_height + vpadding;
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}
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const std::vector<int> buttonids = { INPUT_BUTTON_ACCEPT, INPUT_BUTTON_CANCEL };
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const std::vector<std::string> buttonlabels = { "accept", "cancel" };
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_buttons.populate(_renderer, buttonlabels, buttonids, static_cast<Sint32>(total_height),
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static_cast<Sint32>(widget_width / 2),
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static_cast<Sint32>(widget_height));
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}
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}
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}
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SdlSelectList::~SdlSelectList()
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{
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_list.clear();
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_buttons.clear();
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SDL_DestroyRenderer(_renderer);
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SDL_DestroyWindow(_window);
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TTF_Quit();
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}
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int SdlSelectList::run()
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{
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int res = -2;
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ssize_t CurrentActiveTextInput = 0;
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bool running = true;
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if (!_window || !_renderer)
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return -2;
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try
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{
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while (running)
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{
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if (!clear_window(_renderer))
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throw;
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if (!update_text())
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throw;
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if (!_buttons.update(_renderer))
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throw;
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SDL_Event event = { 0 };
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SDL_WaitEvent(&event);
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switch (event.type)
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{
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case SDL_KEYDOWN:
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switch (event.key.keysym.sym)
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{
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case SDLK_UP:
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case SDLK_BACKSPACE:
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if (CurrentActiveTextInput > 0)
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CurrentActiveTextInput--;
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else
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CurrentActiveTextInput = _list.size() - 1;
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break;
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case SDLK_DOWN:
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case SDLK_TAB:
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if (CurrentActiveTextInput < 0)
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CurrentActiveTextInput = 0;
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else
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CurrentActiveTextInput++;
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CurrentActiveTextInput = CurrentActiveTextInput % _list.size();
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break;
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case SDLK_RETURN:
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case SDLK_RETURN2:
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case SDLK_KP_ENTER:
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running = false;
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res = CurrentActiveTextInput;
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break;
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case SDLK_ESCAPE:
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running = false;
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res = INPUT_BUTTON_CANCEL;
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break;
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default:
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break;
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}
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break;
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case SDL_MOUSEMOTION:
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{
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ssize_t TextInputIndex = get_index(event.button);
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reset_mouseover();
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if (TextInputIndex >= 0)
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{
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auto& cur = _list[TextInputIndex];
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if (!cur.set_mouseover(_renderer, true))
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throw;
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}
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auto button = _buttons.get_selected(event.button);
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if (button)
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{
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if (!button->highlight(_renderer))
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throw;
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}
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}
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break;
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case SDL_MOUSEBUTTONDOWN:
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{
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auto button = _buttons.get_selected(event.button);
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if (button)
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{
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running = false;
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if (button->id() == INPUT_BUTTON_CANCEL)
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res = INPUT_BUTTON_CANCEL;
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else
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res = CurrentActiveTextInput;
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}
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else
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{
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CurrentActiveTextInput = get_index(event.button);
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}
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}
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break;
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case SDL_QUIT:
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res = INPUT_BUTTON_CANCEL;
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running = false;
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break;
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default:
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break;
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}
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reset_highlight();
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if (CurrentActiveTextInput >= 0)
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{
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auto& cur = _list[CurrentActiveTextInput];
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if (!cur.set_highlight(_renderer, true))
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throw;
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}
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SDL_RenderPresent(_renderer);
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}
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}
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catch (...)
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{
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return -1;
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}
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return res;
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}
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ssize_t SdlSelectList::get_index(const SDL_MouseButtonEvent& button)
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{
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const Sint32 x = button.x;
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const Sint32 y = button.y;
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for (size_t i = 0; i < _list.size(); i++)
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{
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auto& cur = _list[i];
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auto r = cur.rect();
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if ((x >= r.x) && (x <= r.x + r.w) && (y >= r.y) && (y <= r.y + r.h))
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return i;
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}
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return -1;
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}
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bool SdlSelectList::update_text()
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{
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for (auto& cur : _list)
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{
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if (!cur.update_text(_renderer))
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return false;
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}
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return true;
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}
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void SdlSelectList::reset_mouseover()
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{
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for (auto& cur : _list)
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{
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cur.set_mouseover(_renderer, false);
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}
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}
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void SdlSelectList::reset_highlight()
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{
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for (auto& cur : _list)
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{
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cur.set_highlight(_renderer, false);
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}
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}
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