/**
* @brief Button -- constructor to make complete button
* @param access_name -- name used for identification of element
* @param txtr -- contains text to render or path to icon; will be placed in center of button
* @param form -- size and position of button
* @param margin -- margins inside button
* @param content -- marks content that will be placed in button (text, icon), defaulted to text
*/
Button::Button(std::string access_name,
std::string txtr,
SDL_Rect form,
Padding margin,
Button::Content content)
: Widget(access_name, default_back_path, form, margin)
, font_color(default_font_color)
, listener(SDL_MOUSEBUTTONDOWN) {
font = TTF_OpenFont(default_font_path.c_str(), default_font_size);
// creating texture with text if content marked as text
if (content == text) {
this->txtr = Texture::ptr(new Texture(txtr, font, font_color, form.x + margin.left, form.y + margin.top));
// else creating texture with image if content marked as icon
} else if (content == icon) {
this->txtr = Texture::ptr(new Texture(txtr, form.x + margin.left, form.y + margin.top));
}
// centering content of button
SDL_Rect txtr_form = this->txtr->get_form();
int centered_w = txtr_form.w;
if (centered_w > (form.w - margin.left - margin.right))
centered_w = (form.w - margin.left - margin.right);
int centered_h = txtr_form.h;
if (centered_h > (form.h - margin.top - margin.bottom))
centered_h = (form.h - margin.top - margin.bottom);
int centered_x = form.x + ((form.w - margin.left - margin.right)/2 - (centered_w / 2));
int centered_y = form.y + ((form.h - margin.top - margin.bottom)/2 - (centered_h / 2));
this->txtr->set_form({centered_x, centered_y, centered_w, centered_h});
listener.set_handler([this] (SDL_Event& event) -> void {
// if clicked this button and on_click_handler is defined
if (is_point_in({event.button.x, event.button.y}) && on_click_handler) {
on_click_handler();
}
});
}
bool button::handle_event(const SDL_Event & e)
{
switch (e.type)
{
case SDL_MOUSEBUTTONDOWN:
down_tick = SDL_GetTicks();
return true;
case SDL_MOUSEBUTTONUP:
{
if (button_down_here(e.button.button))
{
if (on_click_handler)
{
on_click_handler(this);
return true;
}
}
}
break;
default:
break;
}
return false;
} // button::handle_event()
