Drop-down menu window. More...

Inheritance diagram for DropdownWindow:

Public Member Functions
	DropdownWindow (Window *parent, DropDownList &&list, int selected, WidgetID button, const Rect wi_rect, bool instant_close, Colours wi_colour, bool persist)
	Create a dropdown menu. More...

void	Close ([[maybe_unused]] int data=0) override

void	OnFocusLost (bool closing) override
	The window has lost focus. More...

void	FitAvailableHeight (Dimension &desired, const Dimension &list, uint available_height)
	Fit dropdown list into available height, rounding to average item size. More...

void	UpdateSizeAndPosition ()
	Update size and position of window to fit dropdown list into available space.

void	UpdateWidgetSize (WidgetID widget, Dimension &size, [[maybe_unused]] const Dimension &padding, [[maybe_unused]] Dimension &fill, [[maybe_unused]] Dimension &resize) override

Point	OnInitialPosition ([[maybe_unused]] int16_t sm_width, [[maybe_unused]] int16_t sm_height, [[maybe_unused]] int window_number) override

bool	GetDropDownItem (int &value)
	Find the dropdown item under the cursor. More...

void	DrawWidget (const Rect &r, WidgetID widget) const override

void	OnClick ([[maybe_unused]] Point pt, WidgetID widget, [[maybe_unused]] int click_count) override

void	OnMouseLoop () override
	Called for every mouse loop run, which is at least once per (game) tick.

void	ReplaceList (DropDownList &&list)

Public Member Functions inherited from Window
	Window (WindowDesc &desc)
	Empty constructor, initialization has been moved to InitNested() called from the constructor of the derived class. More...

void *	operator new[] (size_t size)=delete
	Helper allocation function to disallow something. More...

template<class NWID >
const NWID *	GetWidget (WidgetID widnum) const
	Get the nested widget with number widnum from the nested widget tree. More...

template<class NWID >
NWID *	GetWidget (WidgetID widnum)
	Get the nested widget with number widnum from the nested widget tree. More...

const Scrollbar *	GetScrollbar (WidgetID widnum) const
	Return the Scrollbar to a widget index. More...

Scrollbar *	GetScrollbar (WidgetID widnum)
	Return the Scrollbar to a widget index. More...

const QueryString *	GetQueryString (WidgetID widnum) const
	Return the querystring associated to a editbox. More...

QueryString *	GetQueryString (WidgetID widnum)
	Return the querystring associated to a editbox. More...

void	UpdateQueryStringSize ()
	Update size of all QueryStrings of this window.

virtual const struct Textbuf *	GetFocusedTextbuf () const
	Get the current input text buffer. More...

virtual Point	GetCaretPosition () const
	Get the current caret position if an edit box has the focus. More...

virtual Rect	GetTextBoundingRect (const char from, const char to) const
	Get the bounding rectangle for a text range if an edit box has the focus. More...

virtual ptrdiff_t	GetTextCharacterAtPosition (const Point &pt) const
	Get the character that is rendered at a position by the focused edit box. More...

void	InitNested (WindowNumber number=0)
	Perform complete initialization of the Window with nested widgets, to allow use. More...

void	CreateNestedTree ()
	Perform the first part of the initialization of a nested widget tree. More...

void	FinishInitNested (WindowNumber window_number=0)
	Perform the second part of the initialization of a nested widget tree. More...

template<typename T , std::enable_if_t< std::is_base_of< StrongTypedefBase, T >::value, int > = 0>
void	FinishInitNested (T number)

void	SetTimeout ()
	Set the timeout flag of the window and initiate the timer.

void	SetWhiteBorder ()
	Set the timeout flag of the window and initiate the timer.

void	DisableAllWidgetHighlight ()
	Disable the highlighted status of all widgets.

void	SetWidgetHighlight (WidgetID widget_index, TextColour highlighted_colour)
	Sets the highlighted status of a widget. More...

bool	IsWidgetHighlighted (WidgetID widget_index) const
	Gets the highlighted status of a widget. More...

void	SetWidgetDisabledState (WidgetID widget_index, bool disab_stat)
	Sets the enabled/disabled status of a widget. More...

void	DisableWidget (WidgetID widget_index)
	Sets a widget to disabled. More...

void	EnableWidget (WidgetID widget_index)
	Sets a widget to Enabled. More...

bool	IsWidgetDisabled (WidgetID widget_index) const
	Gets the enabled/disabled status of a widget. More...

bool	IsWidgetFocused (WidgetID widget_index) const
	Check if given widget is focused within this window. More...

bool	IsWidgetGloballyFocused (WidgetID widget_index) const
	Check if given widget has user input focus. More...

void	SetWidgetLoweredState (WidgetID widget_index, bool lowered_stat)
	Sets the lowered/raised status of a widget. More...

void	ToggleWidgetLoweredState (WidgetID widget_index)
	Invert the lowered/raised status of a widget. More...

void	LowerWidget (WidgetID widget_index)
	Marks a widget as lowered. More...

void	RaiseWidget (WidgetID widget_index)
	Marks a widget as raised. More...

void	RaiseWidgetWhenLowered (WidgetID widget_index)
	Marks a widget as raised and dirty (redraw), when it is marked as lowered. More...

bool	IsWidgetLowered (WidgetID widget_index) const
	Gets the lowered state of a widget. More...

void	UnfocusFocusedWidget ()
	Makes no widget on this window have focus. More...

bool	SetFocusedWidget (WidgetID widget_index)
	Set focus within this window to the given widget. More...

EventState	HandleEditBoxKey (WidgetID wid, char32_t key, uint16_t keycode)
	Process keypress for editbox widget. More...

virtual void	InsertTextString (WidgetID wid, const char str, bool marked, const char caret, const char insert_location, const char replacement_end)
	Insert a text string at the cursor position into the edit box widget. More...

void	HandleButtonClick (WidgetID widget)
	Do all things to make a button look clicked and mark it to be unclicked in a few ticks. More...

int	GetRowFromWidget (int clickpos, WidgetID widget, int padding, int line_height=-1) const
	Compute the row of a widget that a user clicked in. More...

void	RaiseButtons (bool autoraise=false)
	Raise the buttons of the window. More...

template<typename... Args>
void	SetWidgetsDisabledState (bool disab_stat, Args... widgets)
	Sets the enabled/disabled status of a list of widgets. More...

template<typename... Args>
void	SetWidgetsLoweredState (bool lowered_stat, Args... widgets)
	Sets the lowered/raised status of a list of widgets. More...

template<typename... Args>
void	RaiseWidgetsWhenLowered (Args... widgets)
	Raises the widgets and sets widgets dirty that are lowered. More...

void	SetWidgetDirty (WidgetID widget_index) const
	Invalidate a widget, i.e. More...

void	DrawWidgets () const
	Paint all widgets of a window.

void	DrawViewport () const
	Draw the viewport of this window.

void	DrawSortButtonState (WidgetID widget, SortButtonState state) const
	Draw a sort button's up or down arrow symbol. More...

Window *	FindChildWindow (WindowClass wc=WC_INVALID) const
	Find the Window whose parent pointer points to this window. More...

void	CloseChildWindows (WindowClass wc=WC_INVALID) const
	Close all children a window might have in a head-recursive manner. More...

virtual void	Close (int data=0)
	Hide the window and all its child windows, and mark them for a later deletion.

void	SetDirty () const
	Mark entire window as dirty (in need of re-paint)

void	ReInit (int rx=0, int ry=0, bool reposition=false)
	Re-initialize a window, and optionally change its size. More...

bool	IsShaded () const
	Is window shaded currently?

void	SetShaded (bool make_shaded)
	Set the shaded state of the window to make_shaded. More...

void	ScheduleResize ()
	Mark this window as resized and in need of OnResize() event.

void	ProcessScheduledResize ()
	Process scheduled OnResize() event.

void	InvalidateData (int data=0, bool gui_scope=true)
	Mark this window's data as invalid (in need of re-computing) More...

void	ProcessScheduledInvalidations ()
	Process all scheduled invalidations.

void	ProcessHighlightedInvalidations ()
	Process all invalidation of highlighted widgets.

virtual void	OnInit ()
	Notification that the nested widget tree gets initialized. More...

virtual void	ApplyDefaults ()
	Read default values from WindowDesc configuration an apply them to the window.

virtual Point	OnInitialPosition (int16_t sm_width, int16_t sm_height, int window_number)
	Compute the initial position of the window. More...

virtual void	OnPaint ()
	The window must be repainted. More...

virtual void	DrawWidget ([[maybe_unused]] const Rect &r, [[maybe_unused]] WidgetID widget) const
	Draw the contents of a nested widget. More...

virtual void	UpdateWidgetSize ([[maybe_unused]] WidgetID widget, [[maybe_unused]] Dimension &size, [[maybe_unused]] const Dimension &padding, [[maybe_unused]] Dimension &fill, [[maybe_unused]] Dimension &resize)
	Update size and resize step of a widget in the window. More...

virtual void	SetStringParameters ([[maybe_unused]] WidgetID widget) const
	Initialize string parameters for a widget. More...

virtual void	OnFocus ()
	The window has gained focus. More...

virtual EventState	OnKeyPress ([[maybe_unused]] char32_t key, [[maybe_unused]] uint16_t keycode)
	A key has been pressed. More...

virtual EventState	OnHotkey (int hotkey)
	A hotkey has been pressed. More...

virtual EventState	OnCTRLStateChange ()
	The state of the control key has changed. More...

virtual void	OnClick ([[maybe_unused]] Point pt, [[maybe_unused]] WidgetID widget, [[maybe_unused]] int click_count)
	A click with the left mouse button has been made on the window. More...

virtual bool	OnRightClick ([[maybe_unused]] Point pt, [[maybe_unused]] WidgetID widget)
	A click with the right mouse button has been made on the window. More...

virtual void	OnHover ([[maybe_unused]] Point pt, [[maybe_unused]] WidgetID widget)
	The mouse is hovering over a widget in the window, perform an action for it. More...

virtual bool	OnTooltip ([[maybe_unused]] Point pt, [[maybe_unused]] WidgetID widget, [[maybe_unused]] TooltipCloseCondition close_cond)
	Event to display a custom tooltip. More...

virtual void	OnMouseDrag ([[maybe_unused]] Point pt, [[maybe_unused]] WidgetID widget)
	An 'object' is being dragged at the provided position, highlight the target if possible. More...

virtual void	OnDragDrop ([[maybe_unused]] Point pt, [[maybe_unused]] WidgetID widget)
	A dragged 'object' has been released. More...

virtual void	OnScroll ([[maybe_unused]] Point delta)
	Handle the request for (viewport) scrolling. More...

virtual void	OnMouseOver ([[maybe_unused]] Point pt, [[maybe_unused]] WidgetID widget)
	The mouse is currently moving over the window or has just moved outside of the window. More...

virtual void	OnMouseWheel ([[maybe_unused]] int wheel)
	The mouse wheel has been turned. More...

virtual void	OnGameTick ()
	Called once per (game) tick.

virtual void	OnRealtimeTick ([[maybe_unused]] uint delta_ms)
	Called periodically.

virtual void	OnTimeout ()
	Called when this window's timeout has been reached.

virtual void	OnResize ()
	Called after the window got resized. More...

virtual void	OnDropdownSelect ([[maybe_unused]] WidgetID widget, [[maybe_unused]] int index)
	A dropdown option associated to this window has been selected. More...

virtual void	OnDropdownClose (Point pt, WidgetID widget, int index, bool instant_close)
	A dropdown window associated to this window has been closed. More...

virtual void	OnEditboxChanged ([[maybe_unused]] WidgetID widget)
	The text in an editbox has been edited. More...

virtual void	OnQueryTextFinished ([[maybe_unused]] std::optional< std::string > str)
	The query window opened from this window has closed. More...

virtual void	OnInvalidateData ([[maybe_unused]] int data=0, [[maybe_unused]] bool gui_scope=true)
	Some data on this window has become invalid. More...

virtual void	OnPlaceObject ([[maybe_unused]] Point pt, [[maybe_unused]] TileIndex tile)
	The user clicked some place on the map when a tile highlight mode has been set. More...

virtual bool	OnVehicleSelect ([[maybe_unused]] const struct Vehicle *v)
	The user clicked on a vehicle while HT_VEHICLE has been set. More...

virtual bool	OnVehicleSelect ([[maybe_unused]] VehicleList::const_iterator begin, [[maybe_unused]] VehicleList::const_iterator end)
	The user clicked on a vehicle while HT_VEHICLE has been set. More...

virtual void	OnPlaceObjectAbort ()
	The user cancelled a tile highlight mode that has been set.

virtual void	OnPlaceDrag ([[maybe_unused]] ViewportPlaceMethod select_method, [[maybe_unused]] ViewportDragDropSelectionProcess select_proc, [[maybe_unused]] Point pt)
	The user is dragging over the map when the tile highlight mode has been set. More...

virtual void	OnPlaceMouseUp ([[maybe_unused]] ViewportPlaceMethod select_method, [[maybe_unused]] ViewportDragDropSelectionProcess select_proc, [[maybe_unused]] Point pt, [[maybe_unused]] TileIndex start_tile, [[maybe_unused]] TileIndex end_tile)
	The user has dragged over the map when the tile highlight mode has been set. More...

virtual void	OnPlacePresize ([[maybe_unused]] Point pt, [[maybe_unused]] TileIndex tile)
	The user moves over the map when a tile highlight mode has been set when the special mouse mode has been set to 'PRESIZE' mode. More...

virtual bool	IsNewGRFInspectable () const
	Is the data related to this window NewGRF inspectable? More...

virtual void	ShowNewGRFInspectWindow () const
	Show the NewGRF inspection window. More...

template<>
const NWidgetBase *	GetWidget (WidgetID widnum) const
	Specialized case of Window::GetWidget for the nested widget base class.

Public Member Functions inherited from ZeroedMemoryAllocator
void *	operator new (size_t size)
	Memory allocator for a single class instance. More...

void *	operator new[] (size_t size)
	Memory allocator for an array of class instances. More...

void	operator delete (void *ptr)
	Memory release for a single class instance. More...

void	operator delete[] (void *ptr)
	Memory release for an array of class instances. More...

Data Fields
WidgetID	parent_button
	Parent widget number where the window is dropped from.

Rect	wi_rect
	Rect of the button that opened the dropdown.

DropDownList	list
	List with dropdown menu items.

int	selected_result
	Result value of the selected item in the list.

uint8_t	click_delay = 0
	Timer to delay selection.

bool	drag_mode = true

bool	instant_close
	Close the window when the mouse button is raised.

bool	persist
	Persist dropdown menu.

int	scrolling = 0
	If non-zero, auto-scroll the item list (one time).

Point	position
	Position of the topleft corner of the window.

Scrollbar *	vscroll

Dimension	items_dim
	Calculated cropped and padded dimension for the items widget.

IntervalTimer< TimerWindow >	scroll_interval
	Rate limit how fast scrolling happens. More...

Data Fields inherited from Window
WindowDesc &	window_desc
	Window description.

WindowFlags	flags
	Window flags.

WindowClass	window_class
	Window class.

WindowNumber	window_number
	Window number within the window class.

int	scale
	Scale of this window – used to determine how to resize.

uint8_t	timeout_timer
	Timer value of the WF_TIMEOUT for flags.

uint8_t	white_border_timer
	Timer value of the WF_WHITE_BORDER for flags.

int	left
	x position of left edge of the window

int	top
	y position of top edge of the window

int	width
	width of the window (number of pixels to the right in x direction)

int	height
	Height of the window (number of pixels down in y direction)

ResizeInfo	resize
	Resize information.

Owner	owner
	The owner of the content shown in this window. Company colour is acquired from this variable.

ViewportData *	viewport
	Pointer to viewport data, if present.

const NWidgetCore *	nested_focus
	Currently focused nested widget, or `nullptr` if no nested widget has focus.

std::map< WidgetID, QueryString * >	querystrings
	QueryString associated to WWT_EDITBOX widgets.

std::unique_ptr< NWidgetBase >	nested_root
	Root of the nested tree.

WidgetLookup	widget_lookup
	Indexed access to the nested widget tree. Do not access directly, use Window::GetWidget() instead.

NWidgetStacked *	shade_select
	Selection widget (NWID_SELECTION) to use for shading the window. If `nullptr`, window cannot shade.

Dimension	unshaded_size
	Last known unshaded size (only valid while shaded).

WidgetID	mouse_capture_widget
	ID of current mouse capture widget (e.g. dragged scrollbar). -1 if no widget has mouse capture.

Window *	parent
	Parent window.

WindowList::iterator	z_position

Additional Inherited Members
Public Types inherited from Window
using	IteratorToFront = WindowIterator< false >
	Iterate in Z order towards front.

using	IteratorToBack = WindowIterator< true >
	Iterate in Z order towards back.

using	Iterate = AllWindows< false >
	Iterate all windows in whatever order is easiest.

using	IterateFromBack = AllWindows< false >
	Iterate all windows in Z order from back to front.

using	IterateFromFront = AllWindows< true >
	Iterate all windows in Z order from front to back.

Static Public Member Functions inherited from Window
static int	SortButtonWidth ()
	Get width of up/down arrow of sort button state. More...

static void	DeleteClosedWindows ()
	Delete all closed windows.

Protected Member Functions inherited from Window
void	InitializeData (WindowNumber window_number)
	Initializes the data (except the position and initial size) of a new Window. More...

void	InitializePositionSize (int x, int y, int min_width, int min_height)
	Set the position and smallest size of the window. More...

virtual void	FindWindowPlacementAndResize (int def_width, int def_height)
	Resize window towards the default size. More...

virtual	~Window ()
	Remove window and all its child windows from the window stack.

Protected Attributes inherited from Window
std::vector< int >	scheduled_invalidation_data
	Data of scheduled OnInvalidateData() calls.

bool	scheduled_resize
	Set if window has been resized.

Detailed Description

Drop-down menu window.

Definition at line 72 of file dropdown.cpp.

Constructor & Destructor Documentation

◆ DropdownWindow()

DropdownWindow::DropdownWindow	(	Window *	parent,
		DropDownList &&	list,
		int	selected,
		WidgetID	button,
		const Rect	wi_rect,
		bool	instant_close,
		Colours	wi_colour,
		bool	persist
	)

inline

Create a dropdown menu.

Parameters

parent	Parent window.
list	Dropdown item list.
selected	Initial selected result of the list.
button	Widget of the parent window doing the dropdown.
wi_rect	Rect of the button that opened the dropdown.
instant_close	Close the window when the mouse button is raised.
wi_colour	Colour of the parent widget.
persist	Dropdown menu will persist.

Definition at line 98 of file dropdown.cpp.

Member Function Documentation

◆ FitAvailableHeight()

void DropdownWindow::FitAvailableHeight	(	Dimension &	desired,
		const Dimension &	list,
		uint	available_height
	)

inline

Fit dropdown list into available height, rounding to average item size.

Width is adjusted if scrollbar is present.

Parameters

[in,out]	desired	Desired dimensions of dropdown list.
	list	Dimensions of the list itself, without padding or cropping.
	available_height	Available height to fit list within.

Definition at line 152 of file dropdown.cpp.

References list.

Referenced by UpdateSizeAndPosition().

◆ GetDropDownItem()

bool DropdownWindow::GetDropDownItem ( int & value )

inline

Find the dropdown item under the cursor.

Parameters

[out] value Selected item, if function returns true.

Returns: Cursor points to a dropdown item.

Definition at line 228 of file dropdown.cpp.

References GetWidgetFromPos().

Referenced by OnMouseLoop().

◆ OnFocusLost()

void DropdownWindow::OnFocusLost ( bool closing )

inlineoverridevirtual

The window has lost focus.

Called when window loses focus.

Parameters

closing True iff the window has lost focus in the process of closing.

Reimplemented from Window.

Definition at line 138 of file dropdown.cpp.

Field Documentation

◆ scroll_interval

IntervalTimer<TimerWindow> DropdownWindow::scroll_interval

Initial value:

= {std::chrono::milliseconds(30), [this](auto) {
    if (this->scrolling == 0) return;
 
    if (this->vscroll->UpdatePosition(this->scrolling)) this->SetDirty();
 
    this->scrolling = 0;
  }}

Rate limit how fast scrolling happens.

Definition at line 293 of file dropdown.cpp.

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

src/dropdown.cpp

Public Member Functions

Data Fields

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ DropdownWindow()

Member Function Documentation

◆ FitAvailableHeight()

◆ GetDropDownItem()

◆ OnFocusLost()

Field Documentation

◆ scroll_interval