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 "core/string_consumer.hpp"
#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 : uint8_t { 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, const WidgetData &widdata)
	Add a key widget to a row of the keyboard.
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.
void	ShowOnScreenKeyboard (Window *parent, WidgetID button)
	Show the on-screen keyboard (osk) associated with a given textbox.
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.
bool	IsOSKOpenedFor (const Window *w, WidgetID button)
	Check whether the OSK is opened for a specific editbox.

Variables
std::string	_keyboard_opt [2]
	The number of characters has to be OSK_KEYBOARD_ENTRIES.
static char32_t	_keyboard [2][OSK_KEYBOARD_ENTRIES]
static uint8_t	_keystate = KEYS_NONE
static const int	HALF_KEY_WIDTH = 7
	Width of 1/2 key in pixels.
static const int	INTER_KEY_SPACE = 2
	Number of pixels between two keys.
static const int	TOP_KEY_PADDING = 2
	Vertical padding for the top row of keys.
static const int	KEY_PADDING = 6
	Vertical padding for remaining key rows.
static constexpr std::initializer_list< NWidgetPart >	_nested_osk_widgets
static WindowDesc	_osk_desc (WindowPosition::Center, {}, 0, 0, WindowClass::OnScreenKeyboard, WindowClass::None, {}, _nested_osk_widgets)
	Window definition for the on screen keyboard window.

Detailed Description

The On Screen Keyboard GUI.

Definition in file osk_gui.cpp.

Enumeration Type Documentation

KeyStateBits

enum KeyStateBits : uint8_t

Definition at line 31 of file osk_gui.cpp.

Function Documentation

AddKey()

void AddKey ( std::unique_ptr< NWidgetHorizontal > & hor, int pad_y, int num_half, WidgetType widtype, WidgetID widnum, const WidgetData & 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 228 of file osk_gui.cpp.

References Grey, HALF_KEY_WIDTH, INTER_KEY_SPACE, Normal, and NWID_SPACER.

Referenced by MakeAsdfgKeys(), MakeNumberKeys(), MakeQwertyKeys(), MakeSpacebarKeys(), MakeTopKeys(), and MakeZxcvbKeys().

GetKeyboardLayout()

void GetKeyboardLayout

(

)

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

Also check for invalid characters.

Definition at line 353 of file osk_gui.cpp.

References _keyboard_opt, StringConsumer::AnyBytesLeft(), GetString(), OSK_KEYBOARD_ENTRIES, and StringConsumer::ReadUtf8().

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 423 of file osk_gui.cpp.

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

MakeAsdfgKeys()

std::unique_ptr< NWidgetBase > MakeAsdfgKeys ( )

static

Construct the asdfg row keys.

Pointer to function returning a nested widget.

Returns

Nested widget (tree).

Definition at line 283 of file osk_gui.cpp.

References AddKey(), INTER_KEY_SPACE, KEY_PADDING, WID_OSK_ASDFG_FIRST, WID_OSK_ASDFG_LAST, WID_OSK_CAPS, WWT_IMGBTN, and WWT_PUSHBTN.

MakeNumberKeys()

std::unique_ptr< NWidgetBase > MakeNumberKeys ( )

static

Construct the row containing the digit keys.

Pointer to function returning a nested widget.

Returns

Nested widget (tree).

Definition at line 257 of file osk_gui.cpp.

References AddKey(), INTER_KEY_SPACE, KEY_PADDING, WID_OSK_NUMBERS_FIRST, WID_OSK_NUMBERS_LAST, and WWT_PUSHBTN.

MakeQwertyKeys()

std::unique_ptr< NWidgetBase > MakeQwertyKeys ( )

static

Construct the qwerty row keys.

Pointer to function returning a nested widget.

Returns

Nested widget (tree).

Definition at line 269 of file osk_gui.cpp.

References AddKey(), INTER_KEY_SPACE, KEY_PADDING, NWID_SPACER, WID_OSK_QWERTY_FIRST, WID_OSK_QWERTY_LAST, WID_OSK_SPECIAL, WWT_PUSHBTN, and WWT_PUSHIMGBTN.

MakeSpacebarKeys()

std::unique_ptr< NWidgetBase > MakeSpacebarKeys ( )

static

Construct the spacebar row keys.

Pointer to function returning a nested widget.

Returns

Nested widget (tree).

Definition at line 310 of file osk_gui.cpp.

References AddKey(), INTER_KEY_SPACE, KEY_PADDING, NWID_SPACER, WID_OSK_LEFT, WID_OSK_RIGHT, WID_OSK_SPACE, WWT_PUSHIMGBTN, and WWT_PUSHTXTBTN.

MakeTopKeys()

std::unique_ptr< NWidgetBase > MakeTopKeys ( )

static

Construct the top row keys (cancel, ok, backspace).

Pointer to function returning a nested widget.

Returns

Nested widget (tree).

Definition at line 245 of file osk_gui.cpp.

References AddKey(), INTER_KEY_SPACE, TOP_KEY_PADDING, WID_OSK_BACKSPACE, WID_OSK_CANCEL, WID_OSK_OK, WWT_PUSHIMGBTN, and WWT_TEXTBTN.

MakeZxcvbKeys()

std::unique_ptr< NWidgetBase > MakeZxcvbKeys ( )

static

Construct the zxcvb row keys.

Pointer to function returning a nested widget.

Returns

Nested widget (tree).

Definition at line 296 of file osk_gui.cpp.

References AddKey(), INTER_KEY_SPACE, KEY_PADDING, NWID_SPACER, WID_OSK_SHIFT, WID_OSK_ZXCVB_FIRST, WID_OSK_ZXCVB_LAST, WWT_IMGBTN, and WWT_PUSHBTN.

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 392 of file osk_gui.cpp.

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

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 407 of file osk_gui.cpp.

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

Variable Documentation

_keyboard

char32_t _keyboard[2][OSK_KEYBOARD_ENTRIES]

static

Definition at line 29 of file osk_gui.cpp.

_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 28 of file osk_gui.cpp.

Referenced by GetKeyboardLayout().

_keystate

uint8_t _keystate = KEYS_NONE

static

Definition at line 36 of file osk_gui.cpp.

_nested_osk_widgets

std::initializer_list<NWidgetPart> _nested_osk_widgets

staticconstexpr

Initial value:

                                                           = {
  NWidget(WWT_CAPTION, Colours::Grey, WID_OSK_CAPTION), SetTextStyle(TextColour::White),
  NWidget(WWT_PANEL, Colours::Grey),
    NWidget(WWT_EDITBOX, Colours::Grey, WID_OSK_TEXT), SetMinimalSize(252, 0), SetPadding(2, 2, 2, 2),
  EndContainer(),
  NWidget(WWT_PANEL, Colours::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 324 of file osk_gui.cpp.

HALF_KEY_WIDTH

const int HALF_KEY_WIDTH = 7

static

Width of 1/2 key in pixels.

Definition at line 212 of file osk_gui.cpp.

Referenced by AddKey().

INTER_KEY_SPACE

const int INTER_KEY_SPACE = 2

static

Number of pixels between two keys.

Definition at line 213 of file osk_gui.cpp.

Referenced by AddKey(), MakeAsdfgKeys(), MakeNumberKeys(), MakeQwertyKeys(), MakeSpacebarKeys(), MakeTopKeys(), and MakeZxcvbKeys().

KEY_PADDING

const int KEY_PADDING = 6

static

Vertical padding for remaining key rows.

Definition at line 216 of file osk_gui.cpp.

Referenced by MakeAsdfgKeys(), MakeNumberKeys(), MakeQwertyKeys(), MakeSpacebarKeys(), and MakeZxcvbKeys().

TOP_KEY_PADDING

const int TOP_KEY_PADDING = 2

static

Vertical padding for the top row of keys.

Definition at line 215 of file osk_gui.cpp.

Referenced by MakeTopKeys().