| 61 | } |
| 62 | |
| 63 | static Viewport* initViewport(Ui::Point origin, Ui::Size size, ZoomLevel zoom) |
| 64 | { |
| 65 | // Viewports with 0 width are invalid. |
| 66 | if (size.width == 0) |
| 67 | { |
| 68 | assert(size.width != 0); |
| 69 | return nullptr; |
| 70 | } |
| 71 | |
| 72 | auto* vp = allocate(); |
| 73 | if (vp == nullptr) |
| 74 | { |
| 75 | return nullptr; |
| 76 | } |
| 77 | |
| 78 | vp->x = origin.x; |
| 79 | vp->y = origin.y; |
| 80 | vp->width = size.width; |
| 81 | vp->height = size.height; |
| 82 | |
| 83 | vp->viewWidth = size.width << static_cast<uint8_t>(zoom); |
| 84 | vp->viewHeight = size.height << static_cast<uint8_t>(zoom); |
| 85 | vp->zoom = static_cast<uint8_t>(zoom); |
| 86 | vp->flags = ViewportFlags::none; |
| 87 | |
| 88 | if (Config::get().gridlinesOnLandscape) |
| 89 | { |
| 90 | vp->flags |= ViewportFlags::gridlines_on_landscape; |
| 91 | } |
| 92 | |
| 93 | return vp; |
| 94 | } |
| 95 | |
| 96 | static void focusViewportOn(Window* w, int index, EntityId dx) |
| 97 | { |