Method DrawWidget

src/newgrf_gui.cpp:835–924

	}

	void DrawWidget(const Rect &r, WidgetID widget) const override
	{
		switch (widget) {
			case WID_NS_FILE_LIST: {
				const Rect br = r.Shrink(WidgetDimensions::scaled.bevel);
				GfxFillRect(br, PC_BLACK);

				Rect tr = r.Shrink(WidgetDimensions::scaled.framerect);
				uint step_height = this->GetWidget<NWidgetBase>(WID_NS_FILE_LIST)->resize_y;
				Dimension square = GetSpriteSize(SPR_SQUARE);
				Dimension warning = GetSpriteSize(SPR_WARNING_SIGN);
				int square_offset_y = (step_height - square.height) / 2;
				int warning_offset_y = (step_height - warning.height) / 2;
				int offset_y = (step_height - GetCharacterHeight(FS_NORMAL)) / 2;

				bool rtl = _current_text_dir == TD_RTL;
				uint text_left    = rtl ? tr.left : tr.left + square.width + 13;
				uint text_right   = rtl ? tr.right - square.width - 13 : tr.right;
				uint square_left  = rtl ? tr.right - square.width - 3 : tr.left + 3;
				uint warning_left = rtl ? tr.right - square.width - warning.width - 8 : tr.left + square.width + 8;

				int i = 0;
				for (const auto &c : this->actives) {
					if (this->vscroll->IsVisible(i)) {
						std::string text = c->GetName();
						bool h = (this->active_sel == c.get());
						PaletteID pal = this->GetPalette(*c);

						if (h) {
							GfxFillRect(br.left, tr.top, br.right, tr.top + step_height - 1, PC_DARK_BLUE);
						} else if (i == this->active_over) {
							/* Get index of current selection. */
							int active_sel_pos = this->GetCurrentActivePosition();
							if (active_sel_pos != this->active_over) {
								uint top = (active_sel_pos < 0 || this->active_over < active_sel_pos) ? tr.top + 1 : tr.top + step_height - 2;
								GfxFillRect(tr.left, top - 1, tr.right, top + 1, PC_GREY);
							}
						}
						DrawSprite(SPR_SQUARE, pal, square_left, tr.top + square_offset_y);
						if (!c->errors.empty()) DrawSprite(SPR_WARNING_SIGN, 0, warning_left, tr.top + warning_offset_y);
						uint txtoffset = c->errors.empty() ? 0 : warning.width;
						DrawString(text_left + (rtl ? 0 : txtoffset), text_right - (rtl ? txtoffset : 0), tr.top + offset_y, std::move(text), h ? TC_WHITE : TC_ORANGE);
						tr.top += step_height;
					}
					i++;
				}
				if (i == this->active_over && this->vscroll->IsVisible(i)) { // Highlight is after the last GRF entry.
					GfxFillRect(tr.left, tr.top, tr.right, tr.top + 2, PC_GREY);
				}
				break;
			}

			case WID_NS_AVAIL_LIST: {
				const Rect br = r.Shrink(WidgetDimensions::scaled.bevel);
				GfxFillRect(br, this->active_over == -2 ? PC_DARK_GREY : PC_BLACK);

				Rect tr = r.Shrink(WidgetDimensions::scaled.framerect);
				uint step_height = this->GetWidget<NWidgetBase>(WID_NS_AVAIL_LIST)->resize_y;