OpenTTD Source
20241124-master-g9399a92a4f
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Handles the repaint of some part of the screen. More...
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void | RedrawScreenRect (int left, int top, int right, int bottom) |
Repaints a specific rectangle of the screen. More... | |
void | DrawDirtyBlocks () |
Repaints the rectangle blocks which are marked as 'dirty'. More... | |
void | AddDirtyBlock (int left, int top, int right, int bottom) |
Extend the internal _invalid_rect rectangle to contain the rectangle defined by the given parameters. More... | |
void | MarkWholeScreenDirty () |
This function mark the whole screen as dirty. More... | |
static void | TerraformAddDirtyTile (TerraformerState *ts, TileIndex tile) |
Adds a tile to the "tile_table" in a TerraformerState. More... | |
static void | TerraformAddDirtyTileAround (TerraformerState *ts, TileIndex tile) |
Adds all tiles that incident with the north corner of a specific tile to the "tile_table" in a TerraformerState. More... | |
virtual void | Vehicle::MarkDirty () |
Marks the vehicles to be redrawn and updates cached variables. More... | |
static bool | MarkViewportDirty (const Viewport *vp, int left, int top, int right, int bottom) |
Marks a viewport as dirty for repaint if it displays (a part of) the area the needs to be repainted. More... | |
bool | MarkAllViewportsDirty (int left, int top, int right, int bottom) |
Mark all viewports that display an area as dirty (in need of repaint). More... | |
void | MarkTileDirtyByTile (TileIndex tile, int bridge_level_offset, int tile_height_override) |
Mark a tile given by its index dirty for repaint. More... | |
static void | SetSelectionTilesDirty () |
Marks the selected tiles as dirty. More... | |
void | MarkTileDirtyByTile (TileIndex tile, int bridge_level_offset=0) |
Mark a tile given by its index dirty for repaint. More... | |
static void | MarkCanalsAndRiversAroundDirty (TileIndex tile) |
Marks the tiles around a tile as dirty, if they are canals or rivers. More... | |
void | Station::MarkTilesDirty (bool cargo_change) const |
Marks the tiles of the station as dirty. | |
void | ViewportSign::MarkDirty (ZoomLevel maxzoom=ZOOM_LVL_MAX) const |
Mark the sign dirty in all viewports. More... | |
void | Window::SetDirty () const |
Mark entire window as dirty (in need of re-paint) | |
Variables | |
static Rect | _invalid_rect |
The rect for repaint. More... | |
Handles the repaint of some part of the screen.
Some places in the code are called functions which makes something "dirty". This has nothing to do with making a Tile or Window darker or less visible. This term comes from memory caching and is used to define an object must be repaint. If some data of an object (like a Tile, Window, Vehicle, whatever) are changed which are so extensive the object must be repaint its marked as "dirty". The video driver repaint this object instead of the whole screen (this is btw. also possible if needed). This is used to avoid a flickering of the screen by the video driver constantly repainting it.
This whole mechanism is controlled by an rectangle defined in _invalid_rect. This rectangle defines the area on the screen which must be repaint. If a new object needs to be repainted this rectangle is extended to 'catch' the object on the screen. At some point (which is normally uninteresting for patch writers) this rectangle is send to the video drivers method VideoDriver::MakeDirty and it is truncated back to an empty rectangle. At some later point (which is uninteresting, too) the video driver repaints all these saved rectangle instead of the whole screen and drop the rectangle information. Then a new round begins by marking objects "dirty".
void AddDirtyBlock | ( | int | left, |
int | top, | ||
int | right, | ||
int | bottom | ||
) |
Extend the internal _invalid_rect rectangle to contain the rectangle defined by the given parameters.
Note the point (0,0) is top left.
left | The left edge of the rectangle |
top | The top edge of the rectangle |
right | The right edge of the rectangle |
bottom | The bottom edge of the rectangle |
Definition at line 1486 of file gfx.cpp.
Referenced by MarkViewportDirty(), MarkWholeScreenDirty(), Window::SetDirty(), NWidgetBase::SetDirty(), and NewsWindow::SetWindowTop().
void DrawDirtyBlocks | ( | ) |
Repaints the rectangle blocks which are marked as 'dirty'.
Definition at line 1397 of file gfx.cpp.
Referenced by UpdateWindows().
bool MarkAllViewportsDirty | ( | int | left, |
int | top, | ||
int | right, | ||
int | bottom | ||
) |
Mark all viewports that display an area as dirty (in need of repaint).
left | Left edge of area to repaint. (viewport coordinates, that is wrt. ZOOM_LVL_MIN) |
top | Top edge of area to repaint. (viewport coordinates, that is wrt. ZOOM_LVL_MIN) |
right | Right edge of area to repaint. (viewport coordinates, that is wrt. ZOOM_LVL_MIN) |
bottom | Bottom edge of area to repaint. (viewport coordinates, that is wrt. ZOOM_LVL_MIN) |
Definition at line 2022 of file viewport.cpp.
References MarkViewportDirty(), and Viewport::width.
Referenced by Vehicle::MarkAllViewportsDirty(), and MarkTileDirtyByTile().
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Marks the tiles around a tile as dirty, if they are canals or rivers.
tile | The center of the tile where all other tiles are marked as dirty |
Definition at line 86 of file water_cmd.cpp.
References DIR_BEGIN, DIR_END, MarkTileDirtyIfCanalOrRiver(), and TileOffsByDir().
Referenced by DoFloodTile().
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Marks the vehicles to be redrawn and updates cached variables.
This method marks the area of the vehicle on the screen as dirty. It can be use to repaint the vehicle.
Reimplemented in Train, Ship, RoadVehicle, and Aircraft.
Definition at line 407 of file vehicle_base.h.
void ViewportSign::MarkDirty | ( | ZoomLevel | maxzoom = ZOOM_LVL_MAX | ) | const |
Mark the sign dirty in all viewports.
maxzoom | Maximum ZoomLevel at which the text is visible. |
Definition at line 1491 of file viewport.cpp.
References ViewportSign::center, FS_NORMAL, FS_SMALL, WidgetDimensions::fullbevel, GetCharacterHeight(), MarkViewportDirty(), ScaleByZoom(), WidgetDimensions::scaled, Window::viewport, Viewport::width, ViewportSign::width_normal, ViewportSign::width_small, Viewport::zoom, ZOOM_LVL_BEGIN, and ZOOM_LVL_END.
Referenced by TextEffect::Reset(), and ViewportSign::UpdatePosition().
void MarkTileDirtyByTile | ( | TileIndex | tile, |
int | bridge_level_offset, | ||
int | tile_height_override | ||
) |
Mark a tile given by its index dirty for repaint.
tile | The tile to mark dirty. |
bridge_level_offset | Height of bridge on tile to also mark dirty. (Height level relative to north corner.) |
tile_height_override | Height of the tile (TileHeight). |
Definition at line 2057 of file viewport.cpp.
References MarkAllViewportsDirty(), MAX_TILE_EXTENT_LEFT, MAX_TILE_EXTENT_TOP, RemapCoords(), TILE_HEIGHT, TILE_SIZE, TileX(), and TileY().
Referenced by AddAnimatedTile(), ClearPathReservation(), CmdConvertRail(), DoFloodTile(), ExtendTrainReservation(), IncreaseAnimationStage(), MarkBridgeDirty(), MarkDirtyAdjacentLevelCrossingTiles(), MarkTileDirtyByTile(), MarkTileDirtyIfCanalOrRiver(), Station::MarkTilesDirty(), BuildRailToolbarWindow::OnHotkey(), BuildRoadToolbarWindow::OnHotkey(), PlaceTree(), CYapfReserveTrack< Types >::ReserveRailStationPlatform(), CYapfReserveTrack< Types >::ReserveSingleTrack(), SetRailStationPlatformReservation(), SetWaterClassDependingOnSurroundings(), TileLoopClearAlps(), TownActionBuildStatue(), TryPathReserve(), TryReserveRailTrack(), UnreserveRailTrack(), UpdateAdjacentLevelCrossingTilesOnLevelCrossingRemoval(), and VehicleEnterDepot().
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Mark a tile given by its index dirty for repaint.
tile | The tile to mark dirty. |
bridge_level_offset | Height of bridge on tile to also mark dirty. (Height level relative to north corner.) |
Definition at line 91 of file viewport_func.h.
References MarkTileDirtyByTile(), and TileHeight().
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Marks a viewport as dirty for repaint if it displays (a part of) the area the needs to be repainted.
vp | The viewport to mark as dirty |
left | Left edge of area to repaint |
top | Top edge of area to repaint |
right | Right edge of area to repaint |
bottom | Bottom edge of area to repaint |
Definition at line 1983 of file viewport.cpp.
References AddDirtyBlock(), Viewport::left, Viewport::top, UnScaleByZoom(), UnScaleByZoomLower(), Viewport::virtual_height, Viewport::virtual_left, Viewport::virtual_top, Viewport::virtual_width, and Viewport::zoom.
Referenced by MarkAllViewportsDirty(), and ViewportSign::MarkDirty().
void MarkWholeScreenDirty | ( | ) |
This function mark the whole screen as dirty.
This results in repainting the whole screen. Use this with care as this function will break the idea about marking only parts of the screen as 'dirty'.
Definition at line 1529 of file gfx.cpp.
References AddDirtyBlock().
Referenced by CleanupGeneration(), CmdCompanyCtrl(), CmdRenameCompany(), CmdRenameEngine(), CmdRenamePresident(), CmdRenameVehicle(), CmdSetCompanyManagerFace(), FlatEmptyWorld(), NetworkClientListWindow::OnClickCompanyJoin(), ResetLandscapeConfirmationCallback(), ScanNewGRFFiles(), SetLocalCompany(), UpdateLinkgraphColours(), and Town::~Town().
void RedrawScreenRect | ( | int | left, |
int | top, | ||
int | right, | ||
int | bottom | ||
) |
Repaints a specific rectangle of the screen.
left,top,right,bottom | The area of the screen that needs repainting |
AddDirtyBlock
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static |
Marks the selected tiles as dirty.
This function marks the selected tiles as dirty for repaint
Definition at line 2074 of file viewport.cpp.
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Adds a tile to the "tile_table" in a TerraformerState.
ts | TerraformerState. |
tile | Tile. |
Definition at line 70 of file terraform_cmd.cpp.
References TerraformerState::dirty_tiles.
Referenced by TerraformAddDirtyTileAround().
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Adds all tiles that incident with the north corner of a specific tile to the "tile_table" in a TerraformerState.
ts | TerraformerState. |
tile | Tile. |
Definition at line 82 of file terraform_cmd.cpp.
References TerraformAddDirtyTile(), TileDiffXY(), TileX(), and TileY().