Infinite transparent area. More...

#include <roo_display.h>

Inheritance diagram for roo_display::Clear:

Collaboration diagram for roo_display::Clear:

Public Member Functions
	Clear ()
	Constructs a clear fill.

Box	extents () const override
	Return the bounding box encompassing all pixels that need to be drawn.

void	readColors (const int16_t x, const int16_t y, uint32_t count, Color *result) const override
	Read colors for the given points.

bool	readColorRect (int16_t xMin, int16_t yMin, int16_t xMax, int16_t yMax, Color *result) const override
	Read colors for a rectangle.

Public Member Functions inherited from roo_display::Rasterizable
void	readColorsMaybeOutOfBounds (const int16_t x, const int16_t y, uint32_t count, Color *result, Color out_of_bounds_color=color::Transparent) const
	Read colors for points that may be out of bounds.

std::unique_ptr< PixelStream >	createStream () const override
	Default `createStream()` using `readColors()`.

std::unique_ptr< PixelStream >	createStream (const Box &bounds) const override
	Default `createStream()` for a clipped box using `readColors()`.

Public Member Functions inherited from roo_display::Streamable
virtual TransparencyMode	getTransparencyMode () const
	Return the transparency mode for pixels in this stream.

Public Member Functions inherited from roo_display::Drawable
virtual	~Drawable ()

virtual Box	anchorExtents () const
	Return the bounds used for alignment.

Additional Inherited Members
Static Public Member Functions inherited from roo_display::Drawable
static const Drawable *	Empty ()
	A singleton representing a no-op drawable with no bounding box.

Protected Member Functions inherited from roo_display::Rasterizable
void	drawTo (const Surface &s) const override
	Default `drawTo()` using `readColors()`.

Detailed Description

Infinite transparent area.

When drawn, it fills the entire clip box with the color implied by the background settings.

Definition at line 467 of file roo_display.h.

Constructor & Destructor Documentation

◆ Clear()

roo_display::Clear::Clear ( )

inline

Constructs a clear fill.

Definition at line 470 of file roo_display.h.

Member Function Documentation

◆ extents()

Box roo_display::Clear::extents ( ) const

inlineoverridevirtual

Return the bounding box encompassing all pixels that need to be drawn.

This method is called during a transaction and must not block or perform I/O.

Implements roo_display::Drawable.

Definition at line 472 of file roo_display.h.

References roo_display::Box::MaximumBox().

◆ readColorRect()

bool roo_display::Clear::readColorRect	(	int16_t	xMin,
		int16_t	yMin,
		int16_t	xMax,
		int16_t	yMax,
		Color *	result
	)		const

overridevirtual

Read colors for a rectangle.

Returns true if all colors are identical (then only result[0] is valid). The caller must ensure the rectangle is within bounds.

Reimplemented from roo_display::Rasterizable.

Definition at line 283 of file roo_display.cpp.

◆ readColors()

void roo_display::Clear::readColors	(	const int16_t *	x,
		const int16_t *	y,
		uint32_t	count,
		Color *	result
	)		const

overridevirtual

Read colors for the given points.

The caller must ensure all points are within bounds.

Implements roo_display::Rasterizable.

Definition at line 278 of file roo_display.cpp.

References roo_display::FillColor().

The documentation for this class was generated from the following files:

temp_repos/roo_display/src/roo_display.h
temp_repos/roo_display/src/roo_display.cpp

Public Member Functions