Method DrawWidget

src/object_gui.cpp:200–272

	}

	void DrawWidget(const Rect &r, WidgetID widget) const override
	{
		switch (widget) {
			case WID_BO_OBJECT_SPRITE: {
				const ObjectClass *objclass = ObjectClass::Get(_object_gui.sel_class);
				const ObjectSpec *spec = objclass->GetSpec(_object_gui.sel_type);
				if (spec == nullptr) break;

				const NWidgetMatrix *matrix = this->GetWidget<NWidgetBase>(widget)->GetParentWidget<NWidgetMatrix>();

				DrawPixelInfo tmp_dpi;
				/* Set up a clipping area for the preview. */
				Rect ir = r.Shrink(WidgetDimensions::scaled.bevel);
				if (FillDrawPixelInfo(&tmp_dpi, ir)) {
					AutoRestoreBackup dpi_backup(_cur_dpi, &tmp_dpi);
					int x = (ir.Width()  - ScaleSpriteTrad(PREVIEW_WIDTH)) / 2 + ScaleSpriteTrad(PREVIEW_LEFT);
					int y = (ir.Height() + ScaleSpriteTrad(PREVIEW_HEIGHT)) / 2 - ScaleSpriteTrad(PREVIEW_BOTTOM);

					if (!spec->grf_prop.HasGrfFile()) {
						extern const DrawTileSpriteSpan _objects[];
						const DrawTileSprites *dts = &_objects[spec->grf_prop.local_id];
						DrawOrigTileSeqInGUI(x, y, dts, PAL_NONE);
					} else {
						DrawNewObjectTileInGUI(x, y, spec, matrix->GetCurrentElement());
					}
				}
				break;
			}

			case WID_BO_INFO: {
				const ObjectClass *objclass = ObjectClass::Get(_object_gui.sel_class);
				const ObjectSpec *spec = objclass->GetSpec(_object_gui.sel_type);
				if (spec == nullptr) break;

				Rect tr = r;
				const int bottom = tr.bottom;
				/* Use all the available space past the rect, so that we can enlarge the window if needed. */
				tr.bottom = INT16_MAX;
				tr.top = DrawBadgeNameList(tr, spec->badges, GSF_OBJECTS);

				/* Get the extra message for the GUI */
				if (spec->callback_mask.Test(ObjectCallbackMask::FundMoreText)) {
					std::array<int32_t, 16> regs100;
					uint16_t callback_res = GetObjectCallback(CBID_OBJECT_FUND_MORE_TEXT, 0, 0, spec, nullptr, INVALID_TILE, regs100, _object_gui.sel_view);
					if (callback_res != CALLBACK_FAILED && callback_res != 0x400) {
						std::string str;
						if (callback_res == 0x40F) {
							str = GetGRFStringWithTextStack(spec->grf_prop.grffile, static_cast<GRFStringID>(regs100[0]), std::span{regs100}.subspan(1));
						} else if (callback_res > 0x400) {
							ErrorUnknownCallbackResult(spec->grf_prop.grfid, CBID_OBJECT_FUND_MORE_TEXT, callback_res);
						} else {
							str = GetGRFStringWithTextStack(spec->grf_prop.grffile, GRFSTR_MISC_GRF_TEXT + callback_res, regs100);
						}
						if (!str.empty()) {
							tr.top = DrawStringMultiLine(tr, str, TC_ORANGE);
						}
					}
				}