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#include <cassert>
#include <algorithm>
#include "sdl_buttons.hpp"
static const Uint32 hpadding = 10;
bool SdlButtonList::populate(SDL_Renderer* renderer, const std::vector<std::string>& labels,
const std::vector<int>& ids, Sint32 total_width, Sint32 offsetY,
Sint32 width, Sint32 height)
{
assert(renderer);
assert(width >= 0);
assert(height >= 0);
assert(labels.size() == ids.size());
_list.clear();
size_t button_width = ids.size() * (width + hpadding) + hpadding;
size_t offsetX = total_width - std::min<size_t>(total_width, button_width);
for (size_t x = 0; x < ids.size(); x++)
{
const size_t curOffsetX = offsetX + x * (static_cast<size_t>(width) + hpadding);
const SDL_Rect rect = { static_cast<int>(curOffsetX), offsetY, width, height };
_list.emplace_back(renderer, labels[x], ids[x], rect);
}
return true;
}
SdlButton* SdlButtonList::get_selected(const SDL_MouseButtonEvent& button)
{
const Sint32 x = button.x;
const Sint32 y = button.y;
return get_selected(x, y);
}
SdlButton* SdlButtonList::get_selected(Sint32 x, Sint32 y)
{
for (auto& btn : _list)
{
auto r = btn.rect();
if ((x >= r.x) && (x <= r.x + r.w) && (y >= r.y) && (y <= r.y + r.h))
return &btn;
}
return nullptr;
}
bool SdlButtonList::set_highlight_next(bool reset)
{
if (reset)
_highlighted = nullptr;
else
{
auto next = _highlight_index++;
_highlight_index %= _list.size();
auto& element = _list[next];
_highlighted = &element;
}
return true;
}
bool SdlButtonList::set_highlight(size_t index)
{
if (index >= _list.size())
{
_highlighted = nullptr;
return false;
}
auto& element = _list[index];
_highlighted = &element;
_highlight_index = ++index % _list.size();
return true;
}
bool SdlButtonList::set_mouseover(Sint32 x, Sint32 y)
{
_mouseover = get_selected(x, y);
return _mouseover != nullptr;
}
void SdlButtonList::clear()
{
_list.clear();
_mouseover = nullptr;
_highlighted = nullptr;
_highlight_index = 0;
}
bool SdlButtonList::update(SDL_Renderer* renderer)
{
assert(renderer);
for (auto& btn : _list)
{
if (!btn.update(renderer))
return false;
}
if (_highlighted)
_highlighted->highlight(renderer);
if (_mouseover)
_mouseover->mouseover(renderer);
return true;
}
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