Method OnClick

src/newgrf_debug_gui.cpp:960–1062

	}

	void OnClick([[maybe_unused]] Point pt, WidgetID widget, [[maybe_unused]] int click_count) override
	{
		switch (widget) {
			case WID_SA_PREVIOUS:
				do {
					this->current_sprite = (this->current_sprite == 0 ? GetMaxSpriteID() :  this->current_sprite) - 1;
				} while (GetSpriteType(this->current_sprite) != SpriteType::Normal);
				this->SelectAction5Type();
				this->SetDirty();
				break;

			case WID_SA_GOTO:
				ShowQueryString({}, STR_SPRITE_ALIGNER_GOTO_CAPTION, 7, this, CS_NUMERAL, {});
				break;

			case WID_SA_NEXT:
				do {
					this->current_sprite = (this->current_sprite + 1) % GetMaxSpriteID();
				} while (GetSpriteType(this->current_sprite) != SpriteType::Normal);
				this->SelectAction5Type();
				this->SetDirty();
				break;

			case WID_SA_PICKER:
				this->LowerWidget(WID_SA_PICKER);
				_newgrf_debug_sprite_picker.mode = SPM_WAIT_CLICK;
				this->SetDirty();
				break;

			case WID_SA_LIST: {
				auto it = this->vscroll->GetScrolledItemFromWidget(_newgrf_debug_sprite_picker.sprites, pt.y, this, widget);
				if (it != _newgrf_debug_sprite_picker.sprites.end()) {
					SpriteID spr = *it;
					if (GetSpriteType(spr) == SpriteType::Normal) this->current_sprite = spr;
				}
				this->SelectAction5Type();
				this->SetDirty();
				break;
			}

			case WID_SA_UP:
			case WID_SA_DOWN:
			case WID_SA_LEFT:
			case WID_SA_RIGHT: {
				/*
				 * Yes... this is a hack.
				 *
				 * No... I don't think it is useful to make this less of a hack.
				 *
				 * If you want to align sprites, you just need the number. Generally
				 * the sprite caches are big enough to not remove the sprite from the
				 * cache. If that's not the case, just let the NewGRF developer
				 * increase the cache size instead of storing thousands of offsets
				 * for the incredibly small chance that it's actually going to be
				 * used by someone and the sprite cache isn't big enough for that
				 * particular NewGRF developer.
				 */
				Sprite *spr = const_cast<Sprite *>(GetSprite(this->current_sprite, SpriteType::Normal));