SmallMapWindow Class Reference

Class managing the smallmap window. More...

Inheritance diagram for SmallMapWindow:
Window ZeroedMemoryAllocator

Public Member Functions

 SmallMapWindow (const WindowDesc *desc, int window_number)
uint GetMaxLegendHeight () const
 Compute maximal required height of the legends.
uint GetMinLegendWidth () const
 Compute minimal required width of the legends.
uint GetNumberColumnsLegend (uint width) const
 Return number of columns that can be displayed in width pixels.
uint GetLegendHeight (uint width) const
 Compute height given a width.
virtual void SetStringParameters (int widget) const
 Initialize string parameters for a widget.
virtual void OnInit ()
 Notification that the nested widget tree gets initialized.
virtual void DrawWidget (const Rect &r, int widget) const
 Draw the contents of a nested widget.
virtual void OnPaint ()
 The window must be repainted.
virtual void OnClick (Point pt, int widget, int click_count)
 A click with the left mouse button has been made on the window.
virtual void OnRightClick (Point pt, int widget)
 A click with the right mouse button has been made on the window.
virtual void OnMouseWheel (int wheel)
 The mouse wheel has been turned.
virtual void OnTick ()
 Called once per (game) tick.
void SetNewScroll (int sx, int sy, int sub)
 Set new scroll_x, scroll_y, and subscroll values after limiting them such that the center of the smallmap always contains a part of the map.
virtual void OnScroll (Point delta)
 Handle the request for (viewport) scrolling.
void SmallMapCenterOnCurrentPos ()

Private Types

enum  SmallMapType {
  SMT_CONTOUR, SMT_VEHICLES, SMT_INDUSTRY, SMT_ROUTES,
  SMT_VEGETATION, SMT_OWNER
}
 

Types of legends in the SM_WIDGET_LEGEND widget.

More...
enum  ZoomLevelChange { ZLC_INITIALIZE, ZLC_ZOOM_OUT, ZLC_ZOOM_IN }
 

Available kinds of zoomlevel changes.

More...

Private Member Functions

FORCEINLINE Point RemapTile (int tile_x, int tile_y) const
 Remap tile to location on this smallmap.
FORCEINLINE Point PixelToTile (int px, int py, int *sub, bool add_sub=true) const
 Determine the tile relative to the base tile of the smallmap, and the pixel position at that tile for a point in the smallmap.
Point ComputeScroll (int tx, int ty, int x, int y, int *sub)
 Compute base parameters of the smallmap such that tile (tx, ty) starts at pixel (x, y).
void SetZoomLevel (ZoomLevelChange change, const Point *zoom_pt)
 Initialize or change the zoom level.
uint32 GetTileColours (const TileArea &ta) const
 Decide which colours to show to the user for a group of tiles.
void DrawSmallMapColumn (void *dst, uint xc, uint yc, int pitch, int reps, int start_pos, int end_pos, Blitter *blitter) const
 Draws one column of tiles of the small map in a certain mode onto the screen buffer, skipping the shifted rows in between.
void DrawVehicles (const DrawPixelInfo *dpi, Blitter *blitter) const
 Adds vehicles to the smallmap.
void DrawTowns (const DrawPixelInfo *dpi) const
 Adds town names to the smallmap.
void DrawMapIndicators () const
 Adds map indicators to the smallmap.
void DrawSmallMap (DrawPixelInfo *dpi) const
 Draws the small map.

Static Private Member Functions

static void DrawVertMapIndicator (int x, int y, int y2)
 Draws vertical part of map indicator.
static void DrawHorizMapIndicator (int x, int x2, int y)
 Draws horizontal part of map indicator.

Private Attributes

uint min_number_of_columns
 Minimal number of columns in legends.
uint min_number_of_fixed_rows
 Minimal number of rows in the legends for the fixed layouts only (all except SMT_INDUSTRY).
uint column_width
 Width of a column in the SM_WIDGET_LEGEND widget.
int32 scroll_x
 Horizontal world coordinate of the base tile left of the top-left corner of the smallmap display.
int32 scroll_y
 Vertical world coordinate of the base tile left of the top-left corner of the smallmap display.
int32 subscroll
 Number of pixels (0..3) between the right end of the base tile and the pixel at the top-left corner of the smallmap display.
int zoom
 Zoom level. Bigger number means more zoom-out (further away).
uint8 refresh
 refresh counter, zeroed every FORCE_REFRESH_PERIOD ticks

Static Private Attributes

static SmallMapType map_type = SMT_CONTOUR
 Currently displayed legends.
static bool show_towns = true
 Display town names in the smallmap.
static const uint LEGEND_BLOB_WIDTH = 8
 Width of the coloured blob in front of a line text in the SM_WIDGET_LEGEND widget.
static const uint INDUSTRY_MIN_NUMBER_OF_COLUMNS = 2
 Minimal number of columns in the SM_WIDGET_LEGEND widget for the SMT_INDUSTRY legend.
static const uint8 FORCE_REFRESH_PERIOD = 0x1F
 map is redrawn after that many ticks

Detailed Description

Class managing the smallmap window.

Definition at line 510 of file smallmap_gui.cpp.


Member Enumeration Documentation

Types of legends in the SM_WIDGET_LEGEND widget.

Definition at line 512 of file smallmap_gui.cpp.

Available kinds of zoomlevel changes.

Enumerator:
ZLC_INITIALIZE 

Initialize zoom level.

ZLC_ZOOM_OUT 

Zoom out.

ZLC_ZOOM_IN 

Zoom in.

Definition at line 522 of file smallmap_gui.cpp.


Member Function Documentation

Point SmallMapWindow::ComputeScroll ( int  tx,
int  ty,
int  x,
int  y,
int *  sub 
) [inline, private]

Compute base parameters of the smallmap such that tile (tx, ty) starts at pixel (x, y).

Parameters:
tx Tile x coordinate.
ty Tile y coordinate.
x Non-negative horizontal position in the display where the tile starts.
y Non-negative vertical position in the display where the tile starts.
sub [out] Value of subscroll needed.
Returns:
scroll_x, scroll_y values.

Definition at line 607 of file smallmap_gui.cpp.

References PixelToTile(), TILE_SIZE, and zoom.

static void SmallMapWindow::DrawHorizMapIndicator ( int  x,
int  x2,
int  y 
) [inline, static, private]

Draws horizontal part of map indicator.

Parameters:
x X coord of left border of main viewport
x2 X coord of right border of main viewport
y Y coord of top/bottom border of main viewport

Definition at line 850 of file smallmap_gui.cpp.

References GfxFillRect().

Referenced by DrawMapIndicators().

void SmallMapWindow::DrawSmallMap ( DrawPixelInfo dpi  )  const [inline, private]

Draws the small map.

Basically, the small map is draw column of pixels by column of pixels. The pixels are drawn directly into the screen buffer. The final map is drawn in multiple passes. The passes are:

  1. The colours of tiles in the different modes.
  2. Town names (optional)
Parameters:
dpi pointer to pixel to write onto

Definition at line 890 of file smallmap_gui.cpp.

References _colour_gradient, _settings_client, SmallMapColourScheme::default_colour, DrawMapIndicators(), DrawSmallMapColumn(), DrawTowns(), DrawVehicles(), BlitterFactoryBase::GetCurrentBlitter(), GfxFillRect(), ClientSettings::gui, Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tcache, Tzero >::PoolItem< Tpool >::index, map_type, min(), Blitter::MoveTo(), OWNER_END, OWNER_NONE, OWNER_TOWN, OWNER_WATER, PixelToTile(), scroll_x, scroll_y, show_towns, GUISettings::smallmap_land_colour, TILE_SIZE, and zoom.

Referenced by DrawWidget().

void SmallMapWindow::DrawSmallMapColumn ( void *  dst,
uint  xc,
uint  yc,
int  pitch,
int  reps,
int  start_pos,
int  end_pos,
Blitter blitter 
) const [inline, private]

Draws one column of tiles of the small map in a certain mode onto the screen buffer, skipping the shifted rows in between.

Parameters:
dst Pointer to a part of the screen buffer to write to.
xc The X coordinate of the first tile in the column.
yc The Y coordinate of the first tile in the column
pitch Number of pixels to advance in the screen buffer each time a pixel is written.
reps Number of lines to draw
start_pos Position of first pixel to draw.
end_pos Position of last pixel to draw (exclusive).
blitter current blitter
Note:
If pixel position is below 0, skip drawing.
See also:
GetSmallMapPixels(TileIndex)

Definition at line 732 of file smallmap_gui.cpp.

References _settings_game, TileArea::ClampToMap(), GameSettings::construction, ConstructionSettings::freeform_edges, GetTileColours(), MapMaxX(), MapMaxY(), max(), Blitter::MoveTo(), Blitter::SetPixel(), TileXY(), and zoom.

Referenced by DrawSmallMap().

void SmallMapWindow::DrawTowns ( const DrawPixelInfo dpi  )  const [inline, private]

Adds town names to the smallmap.

Parameters:
dpi the part of the smallmap to be drawn into

Definition at line 811 of file smallmap_gui.cpp.

References DrawString(), FONT_HEIGHT_SMALL, Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tcache, Tzero >::PoolItem< Tpool >::index, Window::left, RemapTile(), SetDParam(), subscroll, TileX(), TileY(), Window::top, and ViewportSign::width_small.

Referenced by DrawSmallMap().

void SmallMapWindow::DrawVehicles ( const DrawPixelInfo dpi,
Blitter blitter 
) const [inline, private]

Adds vehicles to the smallmap.

Parameters:
dpi the part of the smallmap to be drawn into
blitter current blitter

Definition at line 772 of file smallmap_gui.cpp.

References IsInsideMM(), map_type, RemapTile(), Blitter::SetPixel(), subscroll, TILE_SIZE, BaseVehicle::type, VEH_EFFECT, and Vehicle::vehstatus.

Referenced by DrawSmallMap().

static void SmallMapWindow::DrawVertMapIndicator ( int  x,
int  y,
int  y2 
) [inline, static, private]

Draws vertical part of map indicator.

Parameters:
x X coord of left/right border of main viewport
y Y coord of top border of main viewport
y2 Y coord of bottom border of main viewport

Definition at line 838 of file smallmap_gui.cpp.

References GfxFillRect().

Referenced by DrawMapIndicators().

virtual void SmallMapWindow::DrawWidget ( const Rect r,
int  widget 
) const [inline, virtual]

Draw the contents of a nested widget.

Parameters:
r Rectangle occupied by the widget.
widget Number of the widget to draw.
Note:
This method may not change any state, it may only use drawing functions.

Reimplemented from Window.

Definition at line 1058 of file smallmap_gui.cpp.

References _dynlang, _industry_counts, _smallmap_industry_count, column_width, DrawSmallMap(), DrawString(), LegendAndColour::end, FillDrawPixelInfo(), FONT_HEIGHT_SMALL, GetNumberColumnsLegend(), GfxFillRect(), LEGEND_BLOB_WIDTH, map_type, max(), min_number_of_fixed_rows, NUM_INDUSTRYTYPES, SetDParam(), SM_WIDGET_LEGEND, SM_WIDGET_MAP, TD_RTL, DynamicLanguages::text_dir, WD_FRAMERECT_LEFT, WD_FRAMERECT_RIGHT, and WD_FRAMERECT_TOP.

uint SmallMapWindow::GetLegendHeight ( uint  width  )  const [inline]

Compute height given a width.

Returns:
Needed height for displaying the smallmap legends in pixels.

Definition at line 1009 of file smallmap_gui.cpp.

References _smallmap_industry_count, FONT_HEIGHT_SMALL, GetNumberColumnsLegend(), max(), min_number_of_fixed_rows, WD_FRAMERECT_BOTTOM, and WD_FRAMERECT_TOP.

uint SmallMapWindow::GetMaxLegendHeight (  )  const [inline]

Compute maximal required height of the legends.

Returns:
Maximally needed height for displaying the smallmap legends in pixels.

Definition at line 984 of file smallmap_gui.cpp.

References _smallmap_industry_count, FONT_HEIGHT_SMALL, max(), min_number_of_columns, min_number_of_fixed_rows, WD_FRAMERECT_BOTTOM, and WD_FRAMERECT_TOP.

Referenced by NWidgetSmallmapDisplay::SetupSmallestSize().

uint SmallMapWindow::GetMinLegendWidth (  )  const [inline]

Compute minimal required width of the legends.

Returns:
Minimally needed width for displaying the smallmap legends in pixels.

Definition at line 993 of file smallmap_gui.cpp.

References column_width, min_number_of_columns, and WD_FRAMERECT_LEFT.

Referenced by NWidgetSmallmapDisplay::SetupSmallestSize().

uint SmallMapWindow::GetNumberColumnsLegend ( uint  width  )  const [inline]

Return number of columns that can be displayed in width pixels.

Returns:
Number of columns to display.

Definition at line 1001 of file smallmap_gui.cpp.

References column_width.

Referenced by DrawWidget(), GetLegendHeight(), and OnClick().

uint32 SmallMapWindow::GetTileColours ( const TileArea ta  )  const [inline, private]

Decide which colours to show to the user for a group of tiles.

Parameters:
ta Tile area to investigate.
Returns:
Colours to display.

Definition at line 680 of file smallmap_gui.cpp.

References GetSmallMapContoursPixels(), GetSmallMapIndustriesPixels(), GetSmallMapOwnerPixels(), GetSmallMapRoutesPixels(), GetSmallMapVegetationPixels(), GetSmallMapVehiclesPixels(), INVALID_TILE, map_type, MP_VOID, and TILE_AREA_LOOP.

Referenced by DrawSmallMapColumn().

virtual void SmallMapWindow::OnClick ( Point  pt,
int  widget,
int  click_count 
) [inline, virtual]
virtual void SmallMapWindow::OnInit (  )  [inline, virtual]

Notification that the nested widget tree gets initialized.

The event can be used to perform general computations.

Note:
nested_root and/or nested_array (normally accessed via GetWidget()) may not exist during this call.

Reimplemented from Window.

Definition at line 1025 of file smallmap_gui.cpp.

References column_width, LegendAndColour::end, GetStringBoundingBox(), Window::height, INDUSTRY_MIN_NUMBER_OF_COLUMNS, LEGEND_BLOB_WIDTH, lengthof, max(), Pool< Titem, Tindex, Tgrowth_step, Tmax_size, Tcache, Tzero >::MAX_SIZE, min_number_of_columns, min_number_of_fixed_rows, SetDParam(), WD_FRAMERECT_LEFT, WD_FRAMERECT_RIGHT, and Window::width.

virtual void SmallMapWindow::OnMouseWheel ( int  wheel  )  [inline, virtual]

The mouse wheel has been turned.

Parameters:
wheel the amount of movement of the mouse wheel.

Reimplemented from Window.

Definition at line 1255 of file smallmap_gui.cpp.

References NWidgetBase::current_x, NWidgetBase::current_y, IsInsideMM(), Window::left, NWidgetBase::pos_x, NWidgetBase::pos_y, SetZoomLevel(), SM_WIDGET_MAP, Window::top, ZLC_ZOOM_IN, and ZLC_ZOOM_OUT.

virtual void SmallMapWindow::OnPaint (  )  [inline, virtual]

The window must be repainted.

Note:
This method should not change any state, it should only use drawing functions.

Reimplemented from Window.

Definition at line 1118 of file smallmap_gui.cpp.

References Window::DrawWidgets().

virtual void SmallMapWindow::OnRightClick ( Point  pt,
int  widget 
) [inline, virtual]

A click with the right mouse button has been made on the window.

Parameters:
pt the point inside the window that has been clicked.
widget the clicked widget.

Reimplemented from Window.

Definition at line 1247 of file smallmap_gui.cpp.

References SM_WIDGET_MAP.

virtual void SmallMapWindow::OnScroll ( Point  delta  )  [inline, virtual]

Handle the request for (viewport) scrolling.

Parameters:
delta the amount the viewport must be scrolled.

Reimplemented from Window.

Definition at line 1311 of file smallmap_gui.cpp.

References CursorVars::fix_at, PixelToTile(), scroll_x, Window::SetDirty(), SetNewScroll(), and TILE_SIZE.

FORCEINLINE Point SmallMapWindow::PixelToTile ( int  px,
int  py,
int *  sub,
bool  add_sub = true 
) const [inline, private]

Determine the tile relative to the base tile of the smallmap, and the pixel position at that tile for a point in the smallmap.

Parameters:
px Horizontal coordinate of the pixel.
py Vertical coordinate of the pixel.
sub[out] Pixel position at the tile (0..3).
add_sub Add current subscroll to the position.
Returns:
Tile being displayed at the given position relative to scroll_x and scroll_y.
Note:
The subscroll offset is already accounted for.

Definition at line 575 of file smallmap_gui.cpp.

References subscroll, and zoom.

Referenced by ComputeScroll(), DrawSmallMap(), OnClick(), OnScroll(), and SetZoomLevel().

FORCEINLINE Point SmallMapWindow::RemapTile ( int  tile_x,
int  tile_y 
) const [inline, private]

Remap tile to location on this smallmap.

Parameters:
tile_x X coordinate of the tile.
tile_y Y coordinate of the tile.
Returns:
Position to draw on.

Definition at line 551 of file smallmap_gui.cpp.

References RemapCoords(), scroll_x, scroll_y, TILE_SIZE, and zoom.

Referenced by DrawMapIndicators(), DrawTowns(), and DrawVehicles().

void SmallMapWindow::SetNewScroll ( int  sx,
int  sy,
int  sub 
) [inline]

Set new scroll_x, scroll_y, and subscroll values after limiting them such that the center of the smallmap always contains a part of the map.

Parameters:
sx Proposed new scroll_x
sy Proposed new scroll_y
sub Proposed new subscroll

Definition at line 1282 of file smallmap_gui.cpp.

References NWidgetBase::current_x, NWidgetBase::current_y, InverseRemapCoords(), MapMaxX(), MapMaxY(), scroll_x, scroll_y, SM_WIDGET_MAP, subscroll, TILE_SIZE, and zoom.

Referenced by OnScroll(), and SetZoomLevel().

virtual void SmallMapWindow::SetStringParameters ( int  widget  )  const [inline, virtual]

Initialize string parameters for a widget.

Calls to this function are made during initialization to measure the size (that is as part of InitNested()), during drawing, and while re-initializing the window. Only for widgets that render text initializing is requested.

Parameters:
widget Widget number.

Reimplemented from Window.

Definition at line 1016 of file smallmap_gui.cpp.

References map_type, SetDParam(), and SM_WIDGET_CAPTION.

void SmallMapWindow::SetZoomLevel ( ZoomLevelChange  change,
const Point zoom_pt 
) [inline, private]

Initialize or change the zoom level.

Parameters:
change Way to change the zoom level.
zoom_pt Position to keep fixed while zooming.
Precondition:
*zoom_pt should contain a point in the smallmap display when zooming in or out.

Definition at line 634 of file smallmap_gui.cpp.

References Clamp(), lengthof, PixelToTile(), scroll_x, Window::SetDirty(), SetNewScroll(), Window::SetWidgetDisabledState(), SM_WIDGET_ZOOM_IN, SM_WIDGET_ZOOM_OUT, TILE_SIZE, ZLC_INITIALIZE, ZLC_ZOOM_IN, ZLC_ZOOM_OUT, and zoom.

Referenced by OnClick(), and OnMouseWheel().


The documentation for this class was generated from the following file:

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