sdl_input.cpp

 
#include "sdl_input.hpp"
 
#include <cassert>
 
#include <string>
#include <utility>
 
#include <SDL.h>
#include <SDL_ttf.h>
 
#include "sdl_widget.hpp"
#include "sdl_button.hpp"
#include "sdl_buttons.hpp"
 
static const SDL_Color inputbackgroundcolor = { 0x56, 0x56, 0x56, 0xff };
static const SDL_Color inputhighlightcolor = { 0x80, 0, 0, 0x60 };
static const SDL_Color inputmouseovercolor = { 0, 0x80, 0, 0x60 };
static const SDL_Color inputfontcolor = { 0xd1, 0xcf, 0xcd, 0xff };
static const SDL_Color labelbackgroundcolor = { 0x56, 0x56, 0x56, 0xff };
static const SDL_Color labelfontcolor = { 0xd1, 0xcf, 0xcd, 0xff };
static const Uint32 vpadding = 5;
static const Uint32 hpadding = 10;
 
SdlInputWidget::SdlInputWidget(SDL_Renderer* renderer, std::string label, std::string initial,
                               Uint32 flags, size_t offset, size_t width, size_t height)
    : _flags(flags), _text(std::move(initial)), _text_label(std::move(label)),
      _label(renderer,
             { 0, static_cast<int>(offset * (height + vpadding)), static_cast<int>(width),
               static_cast<int>(height) },
             false),
      _input(renderer,
             { static_cast<int>(width + hpadding), static_cast<int>(offset * (height + vpadding)),
               static_cast<int>(width), static_cast<int>(height) },
             true),
      _highlight(false), _mouseover(false)
{
}
 
SdlInputWidget::SdlInputWidget(SdlInputWidget&& other) noexcept
    : _flags(other._flags), _text(std::move(other._text)),
      _text_label(std::move(other._text_label)), _label(std::move(other._label)),
      _input(std::move(other._input)), _highlight(other._highlight), _mouseover(other._mouseover)
{
}
 
bool SdlInputWidget::fill_label(SDL_Renderer* renderer, SDL_Color color)
{
  if (!_label.fill(renderer, color))
    return false;
  return _label.update_text(renderer, _text_label, labelfontcolor);
}
 
bool SdlInputWidget::update_label(SDL_Renderer* renderer)
{
  return _label.update_text(renderer, _text_label, labelfontcolor, labelbackgroundcolor);
}
 
bool SdlInputWidget::set_mouseover(SDL_Renderer* renderer, bool mouseOver)
{
  if (readonly())
    return true;
  _mouseover = mouseOver;
  return update_input(renderer);
}
 
bool SdlInputWidget::set_highlight(SDL_Renderer* renderer, bool highlight)
{
  if (readonly())
    return true;
  _highlight = highlight;
  return update_input(renderer);
}
 
bool SdlInputWidget::update_input(SDL_Renderer* renderer)
{
  std::vector<SDL_Color> colors = { inputbackgroundcolor };
  if (_highlight)
    colors.push_back(inputhighlightcolor);
  if (_mouseover)
    colors.push_back(inputmouseovercolor);
 
  if (!_input.fill(renderer, colors))
    return false;
  return update_input(renderer, inputfontcolor);
}
 
bool SdlInputWidget::resize_input(size_t size)
{
  _text.resize(size);
 
  return true;
}
 
bool SdlInputWidget::set_str(SDL_Renderer* renderer, const std::string& text)
{
  if (readonly())
    return true;
  _text = text;
  if (!resize_input(_text.size()))
    return false;
  return update_input(renderer);
}
 
bool SdlInputWidget::remove_str(SDL_Renderer* renderer, size_t count)
{
  if (readonly())
    return true;
 
  assert(renderer);
  if (_text.empty())
    return true;
 
  if (!resize_input(_text.size() - count))
    return false;
  return update_input(renderer);
}
 
bool SdlInputWidget::append_str(SDL_Renderer* renderer, const std::string& text)
{
  assert(renderer);
  if (readonly())
    return true;
 
  _text.append(text);
  if (!resize_input(_text.size()))
    return false;
  return update_input(renderer);
}
 
const SDL_Rect& SdlInputWidget::input_rect() const
{
  return _input.rect();
}
 
std::string SdlInputWidget::value() const
{
  return _text;
}
 
bool SdlInputWidget::readonly() const
{
  return (_flags & SDL_INPUT_READONLY) != 0;
}
 
bool SdlInputWidget::update_input(SDL_Renderer* renderer, SDL_Color fgcolor)
{
  std::string text = _text;
  if (!text.empty())
  {
    if (_flags & SDL_INPUT_MASK)
    {
      for (char& x : text)
        x = '*';
    }
  }
 
  return _input.update_text(renderer, text, fgcolor);
}