osk_gui.cpp File Reference

The On Screen Keyboard GUI. More...

#include "stdafx.h"
#include "string_func.h"
#include "strings_func.h"
#include "debug.h"
#include "window_func.h"
#include "gfx_func.h"
#include "querystring_gui.h"
#include "video/video_driver.hpp"
#include "zoom_func.h"
#include "widgets/osk_widget.h"
#include "table/sprites.h"
#include "table/strings.h"
#include "safeguards.h"

Go to the source code of this file.

Data Structures
struct	OskWindow

Enumerations
enum	KeyStateBits { KEYS_NONE , KEYS_SHIFT , KEYS_CAPS }

Functions
static void	AddKey (std::unique_ptr< NWidgetHorizontal > &hor, int pad_y, int num_half, WidgetType widtype, WidgetID widnum, uint16_t widdata)
	Add a key widget to a row of the keyboard. More...
static std::unique_ptr< NWidgetBase >	MakeTopKeys ()
	Construct the top row keys (cancel, ok, backspace).
static std::unique_ptr< NWidgetBase >	MakeNumberKeys ()
	Construct the row containing the digit keys.
static std::unique_ptr< NWidgetBase >	MakeQwertyKeys ()
	Construct the qwerty row keys.
static std::unique_ptr< NWidgetBase >	MakeAsdfgKeys ()
	Construct the asdfg row keys.
static std::unique_ptr< NWidgetBase >	MakeZxcvbKeys ()
	Construct the zxcvb row keys.
static std::unique_ptr< NWidgetBase >	MakeSpacebarKeys ()
	Construct the spacebar row keys.
void	GetKeyboardLayout ()
	Retrieve keyboard layout from language string or (if set) config file. More...
void	ShowOnScreenKeyboard (Window *parent, WidgetID button)
	Show the on-screen keyboard (osk) associated with a given textbox. More...
void	UpdateOSKOriginalText (const Window *parent, WidgetID button)
	Updates the original text of the OSK so when the 'parent' changes the original and you press on cancel you won't get the 'old' original text but the updated one. More...
bool	IsOSKOpenedFor (const Window *w, WidgetID button)
	Check whether the OSK is opened for a specific editbox. More...

Variables
std::string	_keyboard_opt [2]
	The number of characters has to be OSK_KEYBOARD_ENTRIES. More...
static char32_t	_keyboard [2][OSK_KEYBOARD_ENTRIES]
static uint8_t	_keystate = KEYS_NONE
static const int	HALF_KEY_WIDTH = 7
static const int	INTER_KEY_SPACE = 2
static const int	TOP_KEY_PADDING = 2
static const int	KEY_PADDING = 6
static constexpr NWidgetPart	_nested_osk_widgets []
static WindowDesc	_osk_desc (WDP_CENTER, nullptr, 0, 0, WC_OSK, WC_NONE, 0, _nested_osk_widgets)

Detailed Description

The On Screen Keyboard GUI.

Definition in file osk_gui.cpp.

Function Documentation

AddKey()

static void AddKey ( std::unique_ptr< NWidgetHorizontal > &  hor, int  pad_y, int  num_half, WidgetType  widtype, WidgetID  widnum, uint16_t  widdata  )

static

Add a key widget to a row of the keyboard.

Parameters

hor	Row container to add key widget to.
pad_y	Vertical padding of the key (all keys in a row should have equal padding).
num_half	Number of 1/2 key widths that this key has.
widtype	Widget type of the key. Must be either NWID_SPACER for an invisible key, or a WWT_* widget.
widnum	Widget number of the key.
widdata	Data value of the key widget.

Note

Key width is measured in 1/2 keys to allow for 1/2 key shifting between rows.

Definition at line 225 of file osk_gui.cpp.

GetKeyboardLayout()

void GetKeyboardLayout

(

)

Retrieve keyboard layout from language string or (if set) config file.

Also check for invalid characters.

Definition at line 349 of file osk_gui.cpp.

References _keyboard_opt, GetString(), and OSK_KEYBOARD_ENTRIES.

Referenced by ShowOnScreenKeyboard().

IsOSKOpenedFor()

bool IsOSKOpenedFor	(	const Window *	w,
		WidgetID	button
	)

Check whether the OSK is opened for a specific editbox.

Parameters

w	Window to check for
button	Editbox of w to check for

Returns

true if the OSK is opened for button.

Definition at line 426 of file osk_gui.cpp.

References FindWindowById(), Window::parent, OskWindow::text_btn, and WC_OSK.

ShowOnScreenKeyboard()

void ShowOnScreenKeyboard	(	Window *	parent,
		WidgetID	button
	)

Show the on-screen keyboard (osk) associated with a given textbox.

Parameters

parent	pointer to the Window where this keyboard originated from
button	widget number of parent's textbox

Definition at line 395 of file osk_gui.cpp.

References CloseWindowById(), GetKeyboardLayout(), and WC_OSK.

UpdateOSKOriginalText()

void UpdateOSKOriginalText	(	const Window *	parent,
		WidgetID	button
	)

Updates the original text of the OSK so when the 'parent' changes the original and you press on cancel you won't get the 'old' original text but the updated one.

Parameters

parent	window that just updated its original text
button	widget number of parent's textbox to update

Definition at line 410 of file osk_gui.cpp.

References Textbuf::buf, FindWindowById(), OskWindow::orig_str, Window::parent, OskWindow::qs, Window::SetDirty(), OskWindow::text_btn, and WC_OSK.

Variable Documentation

_keyboard_opt

std::string _keyboard_opt[2]

The number of characters has to be OSK_KEYBOARD_ENTRIES.

However, these have to be UTF-8 encoded, which means up to 4 bytes per character.

Definition at line 27 of file osk_gui.cpp.

Referenced by GetKeyboardLayout().

_nested_osk_widgets

constexpr NWidgetPart _nested_osk_widgets[]

staticconstexpr

Initial value:

= {
  NWidget(WWT_CAPTION, COLOUR_GREY, WID_OSK_CAPTION), SetDataTip(STR_JUST_STRING, STR_NULL), SetTextStyle(TC_WHITE),
  NWidget(WWT_PANEL, COLOUR_GREY),
    NWidget(WWT_EDITBOX, COLOUR_GREY, WID_OSK_TEXT), SetMinimalSize(252, 0), SetPadding(2, 2, 2, 2),
  EndContainer(),
  NWidget(WWT_PANEL, COLOUR_GREY),
    NWidget(NWID_VERTICAL), SetPadding(3), SetPIP(0, INTER_KEY_SPACE, 0),
      NWidgetFunction(MakeTopKeys),
      NWidgetFunction(MakeNumberKeys),
      NWidgetFunction(MakeQwertyKeys),
      NWidgetFunction(MakeAsdfgKeys),
      NWidgetFunction(MakeZxcvbKeys),
      NWidgetFunction(MakeSpacebarKeys),
    EndContainer(),
  EndContainer(),
}

Definition at line 321 of file osk_gui.cpp.