Method onScrollDraw

src/openrct2-ui/windows/Map.cpp:579–606

        }

        void onScrollDraw(int32_t scrollIndex, RenderTarget& rt) override
        {
            GfxClear(rt, PaletteIndex::pi10);

            // Ensure small maps are centred
            auto screenOffset = ScreenCoordsXY(0, 0);
            auto mapOffset = getMapOffset(width);
            if (mapOffset > 0)
                screenOffset += ScreenCoordsXY(mapOffset, mapOffset - kScrollBarWidth);

            G1Element g1temp = {};
            g1temp.offset = reinterpret_cast<uint8_t*>(_mapImageData.data());
            g1temp.width = getMiniMapWidth();
            g1temp.height = getMiniMapWidth();
            GfxSetG1Element(SPR_TEMP_MAP, &g1temp);
            DrawingEngineInvalidateImage(SPR_TEMP_MAP);
            GfxDrawSprite(rt, ImageId(SPR_TEMP_MAP), screenOffset);

            if (selectedTab == PAGE_PEEPS)
            {
                PaintPeepOverlay(rt, screenOffset);
            }
            else
            {
                PaintTrainOverlay(rt, screenOffset);
            }
            PaintHudRectangle(rt, screenOffset);
        }

        void onPrepareDraw() override
        {