main_window::main_window (QWidget *parent) :
QMainWindow(parent),
ui(new Ui::main_window)
{
ui->setupUi(this);
ui->statusBar->showMessage (trUtf8 ("Выберите функцию"));
setWindowTitle (trUtf8 ("Метод наименьших квадратов"));
ui->function_menu->setTitle (trUtf8 ("Функции"));
ui->menuView->setTitle (trUtf8 ("Показать"));
ui->menu_func->setText (trUtf8 ("Только функцию"));
ui->menu_approx->setText (trUtf8 ("Только приближение"));
ui->menu_both->setText (trUtf8 ("Функцию и приближение"));
ui->menu_mesh->setText (trUtf8 ("Сетку"));
ui->threads_label->setText (trUtf8 ("Число потоков:"));
QColor clearColor = Qt::black;
browser = new GLWidget(this);
browser->setClearColor(clearColor);
connect (ui->sin, SIGNAL (triggered ()), browser, SLOT (set_sin ()));
connect (ui->linear, SIGNAL (triggered ()), browser, SLOT (set_linear ()));
connect (ui->x2y2, SIGNAL (triggered ()), browser, SLOT (set_x2y2 ()));
connect (ui->x2x, SIGNAL (triggered ()), browser, SLOT (set_x2x ()));
connect (ui->menu_mesh, SIGNAL (triggered ()), browser, SLOT (mesh_draw_changed ()));
connect (ui->menu_func, SIGNAL (triggered ()), browser, SLOT (only_func ()));
connect (ui->menu_approx, SIGNAL (triggered ()), browser, SLOT (only_approx ()));
connect (ui->menu_both, SIGNAL (triggered ()), browser, SLOT (draw_both ()));
connect (browser, SIGNAL (sendmsg (QString)), ui->statusBar, SLOT (showMessage (QString)));
ui->centralWidget->layout ()->addWidget (browser);
browser->setFocus ();
old_n1 = ui->n1_box->value ();
old_n2 = ui->n2_box->value ();
browser->update_approximation ();
}
void draw_classic_mode (SDL_Surface *sur) // take this as an example
{
if (cur_pos - offset > play_len || cur_pos - offset < 0)
return;
int root_size, size, pad, y_off;
album *root_album = playlist [cur_pos - offset];
if (root_album == NULL)
return;
album *cur_album = root_album->prev;
if (verbose)
printf ("drawing\n");
if (sur->w < sur->h)
root_size = sur->w * root_size_opt;
else
root_size = sur->h * root_size_opt;
if (root_size > max_size_opt)
root_size = max_size_opt;
size = size_opt * root_size;
if (size > max_size_opt)
{
size = max_size_opt;
root_size = size / size_opt;
}
pad = size * pad_opt;
int root_offset = sur->w/2;
int prev_offset = root_offset - pad- size;
int next_offset = root_offset + pad;
if (root_album->cover != NULL)
{
int extra = root_size/2;
root_offset -= extra;
prev_offset -= extra;
next_offset += extra;
}
y_off = y_off_opt * size;
if (y_off * 2 > root_size - size)
y_off = (root_size - size) / 2;
prev_is_nul = false;
for (int i = prev_offset;
i + size > 0 && cur_album != NULL;
i -= pad + size, cur_album = cur_album->prev)
{
if (cur_album->cover != NULL)
{
draw_both (cur_album->cover, sur, i, sur->h/2 - size/2, size);
}
}
if (cur_album == NULL)
prev_is_nul = true;
cur_album = root_album->next;
next_is_nul = false;
for (int i = next_offset;
i < sur->w && cur_album != NULL;
i += pad + size, cur_album = cur_album->next)
{
if (cur_album->cover != NULL)
{
draw_both (cur_album->cover, sur, i, sur->h/2 - size/2, size);
}
}
if (cur_album == NULL)
next_is_nul = true;
if (root_album->cover != NULL)
{
draw_flipped (root_album->cover, sur,
root_offset, sur->h/2 - root_size/2 - y_off, root_size);
alpha_mask (sur, sur->h/2 + size/2);
draw_album (root_album->cover, sur,
root_offset, sur->h/2 - root_size/2 - y_off, root_size);
}
else
alpha_mask (sur, sur->h/2 + size/2);
}
