PainterRGBA2222Bitmap

PainterRGBA2222Bitmap will take the color for a given point in the shape from a bitmap. Please be aware, the the bitmap is used by the CanvasWidgetRenderer (not Shape), so any rotation you might specify for a Canvas Widget (e.g. Shape) is not applied to the bitmap as CWR is not aware of this rotation.

See: AbstractPainter

Inherits from: AbstractPainterRGBA2222, AbstractPainterBitmap, AbstractPainter

Public Functions


virtual void	paint(uint8_t * destination, int16_t offset, int16_t widgetX, int16_t widgetY, int16_t count, uint8_t alpha) const
	Paints a streak of pixels (all with the same alpha) in the framebuffer.

	PainterRGBA2222Bitmap(const Bitmap & bmp =Bitmap(BITMAP_INVALID))
	Constructor.

virtual void	setBitmap(const Bitmap & bmp)
	Sets a bitmap to be used when drawing the CanvasWidget.

virtual bool	setup(const Rect & widgetRect) const
	This function is called before any actual paint operation is started.

Additional inherited members

Public Functions inherited from AbstractPainterRGBA2222


	AbstractPainterRGBA2222()


FORCE_INLINE_FUNCTION uint8_t	alphaBlend(uint8_t newpix, uint8_t bufpix, uint8_t alpha) const
	Mix colors from a new pixel and a buffer pixel with the given alpha applied to the new pixel, and the inverse alpha applied to the buffer pixel.

FORCE_INLINE_FUNCTION uint8_t	alphaBlend(uint8_t R, uint8_t G, uint8_t B, uint8_t bufpix, uint8_t alpha) const
	Mix colors from a new pixel and a buffer pixel with the given alpha applied to the new pixel, and the inverse alpha applied to the buffer pixel.

Public Functions inherited from AbstractPainterBitmap


	AbstractPainterBitmap(const Bitmap & bmp =Bitmap(BITMAP_INVALID))
	Constructor.

Bitmap	getBitmap() const
	Gets the bitmap previously set using setBitmap().

void	getOffset(int16_t & x, int16_t & y)
	Gets the bitmap offset previously set using setOffset().

bool	getTiled() const
	Gets the tiled setting, previously set using setTiled().

virtual void	setOffset(int16_t x, int16_t y)
	Sets an offset for the bitmap used.

virtual void	setTiled(bool tiled)
	Instruct the painter to tile the bitmap specified.

virtual	~AbstractPainterBitmap()
	Destructor.

Protected Functions inherited from AbstractPainterBitmap


bool	adjustBitmapXY(int16_t & bitmapX, int16_t & bitmapY, int16_t & offset, int16_t & count) const
	Adjust bitmap x and y.

void	updateBitmapOffsets(int16_t widgetWidth) const
	Updates the bitmap offsets described by widgetWidth, these offset are used by bitmap painters adjust the coordinate position inside the widget.

Protected Attributes inherited from AbstractPainterBitmap


Bitmap	bitmap
	The bitmap to be used when painting.

const uint8_t *	bitmapData
	Pointer to the bitmap data.

Bitmap::BitmapFormat	bitmapFormat
	Copy of the bitmap format (for speed reasons)

Rect	bitmapRect
	Bitmap rectangle translated to framebuffer coordinates.

bool	isTiled
	True if bitmap should be tiled, false if not.

int16_t	xOffset
	The x offset of the bitmap.

int16_t	yOffset
	The y offset of the bitmap.

Public Functions inherited from AbstractPainter


	AbstractPainter()
	Initializes a new instance of the AbstractPainter class.

void	framebufferToDisplay(int16_t & widgetX, int16_t & widgetY) const
	Convert Framebuffer widget coordinates to display widget coordinates.

virtual HAL::RenderingMethod	getRenderingMethod() const
	Return the applicable rendering method of the painter.

virtual void	tearDown() const
	This function is called after all paint operation have finished.

virtual	~AbstractPainter()
	Finalizes an instance of the AbstractPainter class.

Protected Functions inherited from AbstractPainter


FORCE_INLINE_FUNCTION bool	compatibleFramebuffer(Bitmap::BitmapFormat format)
	Helper function to check if the provided bitmap format matches the current framebuffer format.

Protected Attributes inherited from AbstractPainter


int16_t	widgetWidth
	The width of the widget on screen, used by framebufferToDisplay()

Public Functions Documentation

paint


virtual void paint	(	uint8_t *	destination ,	const
		int16_t	offset ,	const
		int16_t	widgetX ,	const
		int16_t	widgetY ,	const
		int16_t	count ,	const
		uint8_t	alpha	const
		)	const

Paints a streak of pixels (all with the same alpha) in the framebuffer.

The first pixel to paint is at 'offset' relative to 'destination' (to be able to support 1bpp, 2bpp and 4bpp). The first pixel to paint is at the given 'widgetX', 'widgetY' coordinate. The number of pixels to paint is 'count' and the alpha to apply is 'alpha'.

Note that the widgetX, widgetY is relative to the widget in the framebuffer, not the display. To convert the coordinate to display widget coordinates, use framebufferToDisplay().

Parameters:


destination	If non-null, the pointer.
offset	The offset to add to the destination.
widgetX	The widget x coordinate.
widgetY	The widget y coordinate.
count	Number of pixels.
alpha	The alpha of the pixels.