Graphics context. More...

#include <base/ui/GraphicsContext.h>

Inherited by Pixmap, PopUpWindow, Widget, and Window.

Classes
class	Alignment

class	Brush
	Handle to a brush. More...

class	Font
	Handle to a font. More...

class	GraphicsContextObject
	Handle to a graphics context object (e.g. pen, brush, and font). More...

class	GraphicsContextObjectHandle

class	Pen
	Handle to a pen. More...

class	TextFormat

Public Types
enum	SystemColor { WINDOW_BACKGROUND, WINDOW_FRAME, WINDOW_TEXT, MENU, MENU_TEXT, BUTTON_TEXT, DISABLED_TEXT, HIGHLIGHTED_TEXT }

enum	PenStyle { NONE, SOLID, DASH, DOT, DASH_DOT, DASH_DOT_DOT }

enum	FontFlags { ITALIC = 1, UNDERLINE = 2, STRIKE_OUT = 4 }

enum	FontWeight { THIN, LIGHT, NORMAL, BOLD, HEAVY }

enum	GraphicsFlag { FILLED = 1 }

Public Types inherited from WindowImpl
enum	DisplayMode { MODE_WINDOW, MODE_FULL_SCREEN, MODE_WINDOW, MODE_FULL_SCREEN, MODE_WINDOW, MODE_FULL_SCREEN }

enum	Cursor { INHERIT, NONE, WORKING_IN_BACKGROUND, ARROW, CROSSHAIR, HAND, HELP, NO, MOVING, NORTHEAST_SOUTHWEST, NORTH_SOUTH, NORTHWEST_SOUTHEAST, WEST_EAST, VERTICAL_ARROW, WAITING, INHERIT, NONE, WORKING_IN_BACKGROUND, ARROW, CROSSHAIR, HAND, HELP, NO, MOVING, NORTHEAST_SOUTHWEST, NORTH_SOUTH, NORTHWEST_SOUTHEAST, WEST_EAST, VERTICAL_ARROW, WAITING, INHERIT, NONE, WORKING_IN_BACKGROUND, ARROW, CROSSHAIR, HAND, HELP, NO, MOVING, NORTHEAST_SOUTHWEST, NORTH_SOUTH, NORTHWEST_SOUTHEAST, WEST_EAST, VERTICAL_ARROW, WAITING }

enum	Visibility { INVISIBLE, OBSCURED, VISIBLE, INVISIBLE, OBSCURED, VISIBLE, INVISIBLE, OBSCURED, VISIBLE }

enum	Flag { AUTO_CLEAR = 1 << 0, FIXED_SIZE = 1 << 1, AUTO_CLEAR = 1 << 0, FIXED_SIZE = 1 << 1, AUTO_CLEAR = 1 << 0, FIXED_SIZE = 1 << 1 }

enum	Focus { LOST_FOCUS, ACQUIRED_FOCUS, LOST_FOCUS, ACQUIRED_FOCUS, LOST_FOCUS, ACQUIRED_FOCUS }

enum	Binding { UPPER_LEFT, UPPER_CENTER, UPPER_RIGHT, MIDDLE_LEFT, MIDDLE_CENTER, MIDDLE_RIGHT, LOWER_LEFT, LOWER_CENTER, LOWER_RIGHT, UPPER_LEFT, UPPER_CENTER, UPPER_RIGHT, MIDDLE_LEFT, MIDDLE_CENTER, MIDDLE_RIGHT, LOWER_LEFT, LOWER_CENTER, LOWER_RIGHT, UPPER_LEFT, UPPER_CENTER, UPPER_RIGHT, MIDDLE_LEFT, MIDDLE_CENTER, MIDDLE_RIGHT, LOWER_LEFT, LOWER_CENTER, LOWER_RIGHT }

enum	DisplayMode { MODE_WINDOW, MODE_FULL_SCREEN, MODE_WINDOW, MODE_FULL_SCREEN, MODE_WINDOW, MODE_FULL_SCREEN }

enum	Cursor { INHERIT, NONE, WORKING_IN_BACKGROUND, ARROW, CROSSHAIR, HAND, HELP, NO, MOVING, NORTHEAST_SOUTHWEST, NORTH_SOUTH, NORTHWEST_SOUTHEAST, WEST_EAST, VERTICAL_ARROW, WAITING, INHERIT, NONE, WORKING_IN_BACKGROUND, ARROW, CROSSHAIR, HAND, HELP, NO, MOVING, NORTHEAST_SOUTHWEST, NORTH_SOUTH, NORTHWEST_SOUTHEAST, WEST_EAST, VERTICAL_ARROW, WAITING, INHERIT, NONE, WORKING_IN_BACKGROUND, ARROW, CROSSHAIR, HAND, HELP, NO, MOVING, NORTHEAST_SOUTHWEST, NORTH_SOUTH, NORTHWEST_SOUTHEAST, WEST_EAST, VERTICAL_ARROW, WAITING }

enum	Visibility { INVISIBLE, OBSCURED, VISIBLE, INVISIBLE, OBSCURED, VISIBLE, INVISIBLE, OBSCURED, VISIBLE }

enum	Flag { AUTO_CLEAR = 1 << 0, FIXED_SIZE = 1 << 1, AUTO_CLEAR = 1 << 0, FIXED_SIZE = 1 << 1, AUTO_CLEAR = 1 << 0, FIXED_SIZE = 1 << 1 }

enum	Focus { LOST_FOCUS, ACQUIRED_FOCUS, LOST_FOCUS, ACQUIRED_FOCUS, LOST_FOCUS, ACQUIRED_FOCUS }

enum	Binding { UPPER_LEFT, UPPER_CENTER, UPPER_RIGHT, MIDDLE_LEFT, MIDDLE_CENTER, MIDDLE_RIGHT, LOWER_LEFT, LOWER_CENTER, LOWER_RIGHT, UPPER_LEFT, UPPER_CENTER, UPPER_RIGHT, MIDDLE_LEFT, MIDDLE_CENTER, MIDDLE_RIGHT, LOWER_LEFT, LOWER_CENTER, LOWER_RIGHT, UPPER_LEFT, UPPER_CENTER, UPPER_RIGHT, MIDDLE_LEFT, MIDDLE_CENTER, MIDDLE_RIGHT, LOWER_LEFT, LOWER_CENTER, LOWER_RIGHT }

enum	DisplayMode { MODE_WINDOW, MODE_FULL_SCREEN, MODE_WINDOW, MODE_FULL_SCREEN, MODE_WINDOW, MODE_FULL_SCREEN }

enum	Cursor { INHERIT, NONE, WORKING_IN_BACKGROUND, ARROW, CROSSHAIR, HAND, HELP, NO, MOVING, NORTHEAST_SOUTHWEST, NORTH_SOUTH, NORTHWEST_SOUTHEAST, WEST_EAST, VERTICAL_ARROW, WAITING, INHERIT, NONE, WORKING_IN_BACKGROUND, ARROW, CROSSHAIR, HAND, HELP, NO, MOVING, NORTHEAST_SOUTHWEST, NORTH_SOUTH, NORTHWEST_SOUTHEAST, WEST_EAST, VERTICAL_ARROW, WAITING, INHERIT, NONE, WORKING_IN_BACKGROUND, ARROW, CROSSHAIR, HAND, HELP, NO, MOVING, NORTHEAST_SOUTHWEST, NORTH_SOUTH, NORTHWEST_SOUTHEAST, WEST_EAST, VERTICAL_ARROW, WAITING }

enum	Visibility { INVISIBLE, OBSCURED, VISIBLE, INVISIBLE, OBSCURED, VISIBLE, INVISIBLE, OBSCURED, VISIBLE }

enum	Flag { AUTO_CLEAR = 1 << 0, FIXED_SIZE = 1 << 1, AUTO_CLEAR = 1 << 0, FIXED_SIZE = 1 << 1, AUTO_CLEAR = 1 << 0, FIXED_SIZE = 1 << 1 }

enum	Focus { LOST_FOCUS, ACQUIRED_FOCUS, LOST_FOCUS, ACQUIRED_FOCUS, LOST_FOCUS, ACQUIRED_FOCUS }

enum	Binding { UPPER_LEFT, UPPER_CENTER, UPPER_RIGHT, MIDDLE_LEFT, MIDDLE_CENTER, MIDDLE_RIGHT, LOWER_LEFT, LOWER_CENTER, LOWER_RIGHT, UPPER_LEFT, UPPER_CENTER, UPPER_RIGHT, MIDDLE_LEFT, MIDDLE_CENTER, MIDDLE_RIGHT, LOWER_LEFT, LOWER_CENTER, LOWER_RIGHT, UPPER_LEFT, UPPER_CENTER, UPPER_RIGHT, MIDDLE_LEFT, MIDDLE_CENTER, MIDDLE_RIGHT, LOWER_LEFT, LOWER_CENTER, LOWER_RIGHT }

Public Member Functions
	GraphicsContext ()

	GraphicsContext (const Position &position, const Dimension &dimension, unsigned int flags)

const Pen &	getPen () const noexcept

void	setPen (Pen pen)

const Brush &	getBrush () const noexcept

void	setBrush (Brush brush)

const Font &	getFont () const noexcept

void	setFont (Font font)

void	setBackgroundMode (bool transparent)

void	setBackgroundColor (Color color)

void	setTextColor (Color color)

void	setTextAlignment (unsigned int alignment)

void	clear ()

void	clear (const Position &position, const Dimension &dimension)

void	setPixel (const Position &position, Color color, unsigned int flags=0)

Color	getPixel (const Position &position)

void	setPixels (const Array< Position > &positions, Color color, unsigned int flags=0)

void	moveTo (const Position &position)

void	lineTo (const Position &position, unsigned int flags=0)

void	line (const Position &upperLeft, const Position &lowerRight, unsigned int flags=0)

void	arc (const Position &position, const Dimension &dimension, int start, int stop, unsigned int flags=0)

void	rectangle (const Position &upperLeft, const Position &b, unsigned int flags=0)

void	rectangle (const Position &position, const Dimension &dimension, unsigned int flags=0)

void	rectangle (const Position &upperLeft, const Position &lowerRight, Brush brush, unsigned int flags=0)

void	rectangle (const Position &position, const Dimension &dimension, Brush brush, unsigned int flags=0)

void	ellipse (const Position &upperLeft, const Position &lowerRight, unsigned int flags=0)

void	ellipse (const Position &position, const Dimension &dimension, unsigned int flags=0)

void	circle (const Position &position, unsigned int dimension, unsigned int flags=0)

void	pie (const Position &upperLeft, const Position &lowerRight, const Position &radialA, const Position &radialB, unsigned int flags)

unsigned int	getWidthOf (char ch) const

Dimension	getDimensionOf (const String &text) const

void	text (const Position &position, const Dimension &dimension, const String &text, unsigned int flags=0)

void	putBitmap (const Position &position, const Dimension &dimension, const Bitmap &bitmap)

Bitmap	getBitmap (const Position &position, const Dimension &dimension)

	~GraphicsContext () noexcept

Public Member Functions inherited from WindowImpl
	WindowImpl ()

	WindowImpl (const Position &position, const Dimension &dimension, unsigned int flags)

Position	getBindingOffset (Binding binding) const noexcept

void	flush ()

void	invalidate ()

String	getServerVendor () const

unsigned int	getServerRelease () const

unsigned int	getFlags () const

void	displayMenu (const Position &position, const Menu &menu)

bool	getAutorepeat () const

void	setAutorepeat (bool autorepeat)

String	getTitle () const

void	setTitle (const String &title)

String	getIconTitle () const

void	setIconTitle (const String &title)

Position	getPosition () const

void	setPosition (const Position &position)

Dimension	getDimension () const

void	setDimension (const Dimension &dimension)

void	setRegion (const Position &position, const Dimension &dimension)

void	setMinimumSize (const Dimension &dimension)

void	setMaximumSize (const Dimension &dimension)

Cursor	getCursor () const noexcept

void	setCursor (Cursor cursor)

Position	toGlobalPosition (const Position &position) const

Position	getCursorPosition () const

void	setCursorPosition (const Position &position)

void	releaseCursorConfinement ()

void	setCursorConfinement ()

void	setCursorConfinement (const Position &position, const Dimension &dimension)

void	disableClipping ()

Region	getClipping () const

void	setClipping (const Position &position, const Dimension &dimension)

void	close ()

bool	isChildOf (const WindowImpl &object)

bool	isParentOf (const WindowImpl &object)

bool	isMaximized ()

bool	isMinimized ()

void	maximize ()

void	minimize ()

void	normalize ()

bool	isVisible () const noexcept

Visibility	getVisibility () const noexcept

void	show ()

void	hide ()

bool	isEnabled () const noexcept

void	enable ()

void	disable ()

void	raise ()

void	acquireFocus ()

bool	getCapture () const

void	setCapture (bool state)

DisplayMode	getDisplayMode () const

void	setDisplayMode (DisplayMode displayMode)

unsigned int	getKeyState (unsigned int code) const

unsigned int	getModifiers () const

virtual void	onDestruction () noexcept

virtual void	onDisplay () noexcept

virtual void	onMove (const Position &position) noexcept

virtual void	onResize (const Dimension &dimension) noexcept

virtual void	onMouseMove (const Position &position, unsigned int buttons) noexcept

virtual void	onMouseScope (bool scope) noexcept

virtual void	onMouseButton (const Position &position, Mouse::Button button, Mouse::Event event, unsigned int state) noexcept

virtual void	onMouseWheel (const Position &position, int delta, unsigned int buttons) noexcept

virtual void	onKey (unsigned int key, unsigned int flags, unsigned int modifiers) noexcept

virtual void	onIdle () noexcept

virtual bool	onClose () noexcept

virtual void	onVisibility (Visibility visibility) noexcept

virtual void	onFocus (Focus focus) noexcept

virtual void	onMenu (unsigned int identifier) noexcept

virtual void	onCommand (unsigned int identifier) noexcept

void	update ()

void	wait ()

bool	wait (unsigned int milliseconds)

bool	openDispatch ()

bool	hasMouse () noexcept

unsigned int	getMouseButtons () noexcept

unsigned int	getNumberOfMonitors () noexcept

Dimension	getDisplayDimension () noexcept

bool	isResponding (unsigned int milliseconds)

virtual	~WindowImpl () noexcept

	WindowImpl ()

	WindowImpl (const Position &position, const Dimension &dimension, unsigned int flags)

Position	getBindingOffset (Binding binding) const noexcept

void	flush ()

void	invalidate ()

String	getServerVendor () const

unsigned int	getServerRelease () const

unsigned int	getFlags () const

void	displayMenu (const Position &position, const Menu &menu)

bool	getAutorepeat () const

void	setAutorepeat (bool autorepeat)

String	getTitle () const

void	setTitle (const String &title)

String	getIconTitle () const

void	setIconTitle (const String &title)

Position	getPosition () const

void	setPosition (const Position &position)

Dimension	getDimension () const

void	setDimension (const Dimension &dimension)

void	setRegion (const Position &position, const Dimension &dimension)

void	setMinimumSize (const Dimension &dimension)

void	setMaximumSize (const Dimension &dimension)

Cursor	getCursor () const noexcept

void	setCursor (Cursor cursor)

Position	toGlobalPosition (const Position &position) const

Position	getCursorPosition () const

void	setCursorPosition (const Position &position)

void	releaseCursorConfinement ()

void	setCursorConfinement ()

void	setCursorConfinement (const Position &position, const Dimension &dimension)

void	disableClipping ()

Region	getClipping () const

void	setClipping (const Position &position, const Dimension &dimension)

void	close ()

bool	isChildOf (const WindowImpl &object)

bool	isParentOf (const WindowImpl &object)

bool	isMaximized ()

bool	isMinimized ()

void	maximize ()

void	minimize ()

void	normalize ()

bool	isVisible () const noexcept

Visibility	getVisibility () const noexcept

void	show ()

void	hide ()

bool	isEnabled () const noexcept

void	enable ()

void	disable ()

void	raise ()

void	acquireFocus ()

bool	getCapture () const

void	setCapture (bool state)

DisplayMode	getDisplayMode () const

void	setDisplayMode (DisplayMode displayMode)

unsigned int	getKeyState (unsigned int code) const

unsigned int	getModifiers () const

virtual void	onDestruction () noexcept

virtual void	onDisplay () noexcept

virtual void	onMove (const Position &position) noexcept

virtual void	onResize (const Dimension &dimension) noexcept

virtual void	onMouseMove (const Position &position, unsigned int buttons) noexcept

virtual void	onMouseScope (bool scope) noexcept

virtual void	onMouseButton (const Position &position, Mouse::Button button, Mouse::Event event, unsigned int state) noexcept

virtual void	onMouseWheel (const Position &position, int delta, unsigned int buttons) noexcept

virtual void	onKey (unsigned int key, unsigned int flags, unsigned int modifiers) noexcept

virtual void	onIdle () noexcept

virtual bool	onClose () noexcept

virtual void	onVisibility (Visibility visibility) noexcept

virtual void	onFocus (Focus focus) noexcept

virtual void	onMenu (unsigned int identifier) noexcept

virtual void	onCommand (unsigned int identifier) noexcept

void	update ()

void	wait ()

bool	wait (unsigned int milliseconds)

bool	openDispatch ()

bool	hasMouse () noexcept

unsigned int	getMouseButtons () noexcept

unsigned int	getNumberOfMonitors () noexcept

Dimension	getDisplayDimension () noexcept

bool	isResponding (unsigned int milliseconds)

virtual	~WindowImpl () noexcept

	WindowImpl ()

	WindowImpl (const Position &position, const Dimension &dimension, unsigned int flags)

Position	getLocalBindingOffset (Binding binding) const noexcept

Position	getBindingOffset (Binding binding) const noexcept

void	flush ()

void	invalidate ()

String	getServerVendor () const

unsigned int	getServerRelease () const

unsigned int	getFlags () const

void	displayMenu (const Position &position, const Menu &menu)

bool	getAutorepeat () const

void	setAutorepeat (bool autorepeat)

String	getTitle () const

void	setTitle (const String &title)

String	getIconTitle () const

void	setIconTitle (const String &title)

Position	getPosition () const

void	setPosition (const Position &position)

Dimension	getDimension () const

void	setDimension (const Dimension &dimension)

void	setRegion (const Position &position, const Dimension &dimension)

void	setMinimumSize (const Dimension &dimension)

void	setMaximumSize (const Dimension &dimension)

Cursor	getCursor () const noexcept

void	setCursor (Cursor cursor)

Position	toGlobalPosition (const Position &position) const

Position	getCursorPosition () const

void	setCursorPosition (const Position &position)

void	releaseCursorConfinement ()

void	setCursorConfinement ()

void	setCursorConfinement (const Position &position, const Dimension &dimension)

void	disableClipping ()

Region	getClipping () const

void	setClipping (const Position &position, const Dimension &dimension)

void	close ()

bool	isChildOf (const WindowImpl &object)

bool	isParentOf (const WindowImpl &object)

bool	isMaximized ()

bool	isMinimized ()

void	maximize ()

void	minimize ()

void	normalize ()

bool	isVisible () const noexcept

Visibility	getVisibility () const noexcept

void	show ()

void	hide ()

bool	isEnabled () const noexcept

void	enable ()

void	disable ()

void	raise ()

void	acquireFocus ()

bool	getCapture () const

void	setCapture (bool state)

DisplayMode	getDisplayMode () const

void	setDisplayMode (DisplayMode displayMode)

unsigned int	getKeyState (unsigned int code) const

unsigned int	getModifiers () const

virtual void	onDestruction () noexcept

virtual void	onDisplay () noexcept

virtual void	onMove (const Position &position) noexcept

virtual void	onResize (const Dimension &dimension) noexcept

virtual void	onMouseMove (const Position &position, unsigned int buttons) noexcept

virtual void	onMouseScope (bool scope) noexcept

virtual void	onMouseButton (const Position &position, Mouse::Button button, Mouse::Event event, unsigned int state) noexcept

virtual void	onMouseWheel (const Position &position, int delta, unsigned int buttons) noexcept

virtual void	onKey (unsigned int key, unsigned int flags, unsigned int modifiers) noexcept

virtual void	onIdle () noexcept

virtual bool	onClose () noexcept

virtual void	onVisibility (Visibility visibility) noexcept

virtual void	onFocus (Focus focus) noexcept

virtual void	onMenu (unsigned int identifier) noexcept

virtual void	onCommand (unsigned int identifier) noexcept

void	update ()

void	wait ()

bool	wait (unsigned int milliseconds)

bool	openDispatch ()

bool	hasMouse () noexcept

unsigned int	getMouseButtons () noexcept

unsigned int	getNumberOfMonitors () noexcept

Dimension	getDisplayDimension () noexcept

bool	isResponding (unsigned int milliseconds)

virtual	~WindowImpl () noexcept

Additional Inherited Members
Static Public Member Functions inherited from WindowImpl
static unsigned int	getMouseButtonIndex (Mouse::Button button) noexcept

static Literal	getMouseButtonName (Mouse::Button button) noexcept

static void	exit () noexcept

static void	dispatch ()

static unsigned int	getMouseButtonIndex (Mouse::Button button) noexcept

static Literal	getMouseButtonName (Mouse::Button button) noexcept

static void	exit () noexcept

static void	dispatch ()

static unsigned int	getMouseButtonIndex (Mouse::Button button) noexcept

static Literal	getMouseButtonName (Mouse::Button button) noexcept

static void	exit () noexcept

static void	dispatch ()

Protected Member Functions inherited from WindowImpl
void	construct () noexcept

virtual void	destroy () noexcept

void	construct () noexcept

virtual void	destroy () noexcept

void	construct () noexcept

virtual void	destroy () noexcept

Protected Attributes inherited from WindowImpl
String	title

String	iconTitle

Position	position

Dimension	dimension

unsigned int	flags = 0

Dimension	minimumSize

Dimension	maximumSize

void *	screenHandle = nullptr

void *	graphicsContextHandle = nullptr

Protected Attributes inherited from Drawable
void *	drawableHandle = nullptr

Static Protected Attributes inherited from WindowImpl
static void *	displayHandle

Detailed Description

Graphics context.

Version: 1.0

Member Enumeration Documentation

◆ FontFlags

enum GraphicsContext::FontFlags

Font flag.

Enumerator
ITALIC	Italic.
UNDERLINE	Underline.
STRIKE_OUT	Strike out.

◆ FontWeight

enum GraphicsContext::FontWeight

Font weight.

Enumerator
THIN	Thin.
LIGHT	Light.
NORMAL	Normal.
BOLD	Bold.
HEAVY	Heavy.

◆ PenStyle

enum GraphicsContext::PenStyle

Pen style.

Enumerator
NONE	None.
SOLID	Solid.
DASH	Dash.
DOT	Dot.
DASH_DOT	Dash dot.
DASH_DOT_DOT	Dash dot dot.

◆ SystemColor

enum GraphicsContext::SystemColor

System color.

Constructor & Destructor Documentation

◆ GraphicsContext() [1/2]

GraphicsContext::GraphicsContext ( )

inline

Initializes the graphics context.

◆ GraphicsContext() [2/2]

GraphicsContext::GraphicsContext	(	const Position &	position,
		const Dimension &	dimension,
		unsigned int	flags
	)

inline

Initializes the graphics context.

◆ ~GraphicsContext()

GraphicsContext::~GraphicsContext ( )

noexcept

Destroys the graphics context.

Member Function Documentation

◆ arc()

void GraphicsContext::arc	(	const Position &	position,
		const Dimension &	dimension,
		int	start,
		int	stop,
		unsigned int	flags = `0`
	)

Draws an arc.

Parameters

flags The flags.

◆ circle()

void GraphicsContext::circle	(	const Position &	position,
		unsigned int	dimension,
		unsigned int	flags = `0`
	)

inline

Draws a circle specified by the bounding rectangle using the current pen and brush.

Parameters

position	The upper left of the corner.
dimension	The dimension of the rectangle.
flags	The flags.

◆ clear() [1/2]

void GraphicsContext::clear ( )

Clears the window.

◆ clear() [2/2]

void GraphicsContext::clear	(	const Position &	position,
		const Dimension &	dimension
	)

Clear the specified region.

◆ ellipse() [1/2]

void GraphicsContext::ellipse	(	const Position &	position,
		const Dimension &	dimension,
		unsigned int	flags = `0`
	)

Draws an ellipse specified by the bounding rectangle using the current pen and brush.

Parameters

position	The upper left of the corner.
dimension	The dimension of the rectangle.
flags	The flags.

◆ ellipse() [2/2]

void GraphicsContext::ellipse	(	const Position &	upperLeft,
		const Position &	lowerRight,
		unsigned int	flags = `0`
	)

Draws an ellipse specified by the bounding rectangle using the current pen and brush.

Parameters

upperLeft	The upper left corner.
lowerRight	The lower right corner.
flags	The flags.

◆ getBitmap()

Bitmap GraphicsContext::getBitmap	(	const Position &	position,
		const Dimension &	dimension
	)

Extracts the specified region as a bitmap.

Parameters

position	The upper left of the corner.
dimension	The dimension of the rectangle.

◆ getBrush()

const Brush& GraphicsContext::getBrush ( ) const

inlinenoexcept

Returns the current brush.

◆ getDimensionOf()

Dimension GraphicsContext::getDimensionOf ( const String & text ) const

Returns the dimension of the text.

◆ getFont()

const Font& GraphicsContext::getFont ( ) const

inlinenoexcept

Returns the current font.

◆ getPen()

const Pen& GraphicsContext::getPen ( ) const

inlinenoexcept

Returns the current pen.

◆ getPixel()

Color GraphicsContext::getPixel ( const Position & position )

Returns the color of the pixel at the specified position.

Parameters

position The position of the pixel.

◆ getWidthOf()

unsigned int GraphicsContext::getWidthOf ( char ch ) const

Returns the width of the specified character.

◆ line()

void GraphicsContext::line	(	const Position &	upperLeft,
		const Position &	lowerRight,
		unsigned int	flags = `0`
	)

Draws a line using the current pen.

Parameters

upperLeft	The upper left corner.
lowerRight	The lower right corner.
flags	The flags.

◆ lineTo()

void GraphicsContext::lineTo	(	const Position &	position,
		unsigned int	flags = `0`
	)

Draws a line from the current position to the specified position using the current pen.

Parameters

position	The position.
flags	The flags.

◆ moveTo()

void GraphicsContext::moveTo ( const Position & position )

Sets the current position.

Parameters

position The position.

◆ pie()

void GraphicsContext::pie	(	const Position &	upperLeft,
		const Position &	lowerRight,
		const Position &	radialA,
		const Position &	radialB,
		unsigned int	flags
	)

Draw a pie.

Parameters

upperLeft	The upper left corner of the bounding rectangle.
lowerRight	The lower right corner of the bounding rectangle.
radialA	End point of first radial.
radialB	End point of second radial.
flags	The flags.

◆ putBitmap()

void GraphicsContext::putBitmap	(	const Position &	position,
		const Dimension &	dimension,
		const Bitmap &	bitmap
	)

Draws the specified image.

Parameters

position	The upper left of the corner.
dimension	The dimension of the rectangle.

◆ rectangle() [1/4]

void GraphicsContext::rectangle	(	const Position &	position,
		const Dimension &	dimension,
		Brush	brush,
		unsigned int	flags = `0`
	)

Draws a rectangle with the specified brush.

Parameters

position	The upper left corner.
dimension	The dimension of the rectangle.
brush	The brush used to fill the rectangle.
flags	The flags.

◆ rectangle() [2/4]

void GraphicsContext::rectangle	(	const Position &	position,
		const Dimension &	dimension,
		unsigned int	flags = `0`
	)

Draws a rectangle using the current pen and brush.

Parameters

position	The upper left corner.
dimension	The dimension of the rectangle.
flags	The flags.

◆ rectangle() [3/4]

void GraphicsContext::rectangle	(	const Position &	upperLeft,
		const Position &	b,
		unsigned int	flags = `0`
	)

Draws a rectangle using the current pen and brush.

Parameters

upperLeft	The upper left corner.
lowerRight	The lower right corner.
flags	The flags.

◆ rectangle() [4/4]

void GraphicsContext::rectangle	(	const Position &	upperLeft,
		const Position &	lowerRight,
		Brush	brush,
		unsigned int	flags = `0`
	)

Draws a rectangle with the specified brush.

Parameters

upperLeft	The upper left corner.
lowerRight	The lower right corner.
brush	The brush used to fill the rectangle.
flags	The flags.

◆ setBackgroundColor()

void GraphicsContext::setBackgroundColor ( Color color )

Sets the background color.

◆ setBackgroundMode()

void GraphicsContext::setBackgroundMode ( bool transparent )

Sets the background mode.

◆ setBrush()

void GraphicsContext::setBrush ( Brush brush )

Sets the brush.

◆ setFont()

void GraphicsContext::setFont ( Font font )

Sets the font.

◆ setPen()

void GraphicsContext::setPen ( Pen pen )

Sets the pen.

◆ setPixel()

void GraphicsContext::setPixel	(	const Position &	position,
		Color	color,
		unsigned int	flags = `0`
	)

Draws a point.

Parameters

position	The position of the point.
color	The desired color.
flags	The flags.

◆ setPixels()

void GraphicsContext::setPixels	(	const Array< Position > &	positions,
		Color	color,
		unsigned int	flags = `0`
	)

Draws a point.

Parameters

positions	The positions of the points.
color	The desired color.
flags	The flags.

◆ setTextAlignment()

void GraphicsContext::setTextAlignment ( unsigned int alignment )

Sets the text alignment.

◆ setTextColor()

void GraphicsContext::setTextColor ( Color color )

Sets the text color.

◆ text()

void GraphicsContext::text	(	const Position &	position,
		const Dimension &	dimension,
		const String &	text,
		unsigned int	flags = `0`
	)

Draws text.

Parameters

position	The upper left of the corner.
dimension	The dimension of the rectangle.
flags	The flags.

Classes

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ FontFlags

◆ FontWeight

◆ PenStyle

◆ SystemColor

Constructor & Destructor Documentation

◆ GraphicsContext() [1/2]

◆ GraphicsContext() [2/2]

◆ ~GraphicsContext()

Member Function Documentation

◆ arc()

◆ circle()

◆ clear() [1/2]

◆ clear() [2/2]

◆ ellipse() [1/2]

◆ ellipse() [2/2]

◆ getBitmap()

◆ getBrush()

◆ getDimensionOf()

◆ getFont()

◆ getPen()

◆ getPixel()

◆ getWidthOf()

◆ line()

◆ lineTo()

◆ moveTo()

◆ pie()

◆ putBitmap()

◆ rectangle() [1/4]

◆ rectangle() [2/4]

◆ rectangle() [3/4]

◆ rectangle() [4/4]

◆ setBackgroundColor()

◆ setBackgroundMode()

◆ setBrush()

◆ setFont()

◆ setPen()

◆ setPixel()

◆ setPixels()

◆ setTextAlignment()

◆ setTextColor()

◆ text()