op::draw Namespace Reference

Screen drawing primitives for mode UIs: rectangles, text, and bitmaps. More...

Functions
void	draw_rect (int x, int y, int w, int h)
	Draw a 1px rectangle outline.
void	fill_rect (int x, int y, int w, int h, bool on)
	Fill or clear a rectangle.
void	draw_text (int x, int y, const char *text)
	Draw a NUL-terminated string in the standard 5x7 font.
void	draw_text_large (int x, int y, const char *text)
	Draw a NUL-terminated string in the large 8x12 font.
void	draw_bitmap (int x, int y, const uint8_t *data, int w, int h)
	Blit a 1bpp bitmap.
void	set_pixel (int x, int y, bool on)
	Plot or clear a single pixel.

Detailed Description

Screen drawing primitives for mode UIs: rectangles, text, and bitmaps.

Function Documentation

draw_bitmap()

void op::draw::draw_bitmap ( int x, int y, const uint8_t * data, int w, int h )

inline

Blit a 1bpp bitmap.

Forwards to op::api->draw_bitmap.

Parameters

x	Left edge in pixels.
y	Top edge in pixels.
data	Page-addressed 1-bit pixel data.
w	Bitmap width in pixels.
h	Bitmap height in pixels.

draw_rect()

void op::draw::draw_rect ( int x, int y, int w, int h )

inline

Draw a 1px rectangle outline.

Forwards to op::api->draw_rect.

Parameters

x	Left edge in pixels.
y	Top edge in pixels.
w	Width in pixels.
h	Height in pixels.

draw_text()

void op::draw::draw_text ( int x, int y, const char * text )

inline

Draw a NUL-terminated string in the standard 5x7 font.

Forwards to op::api->draw_text.

Parameters

x	Left edge of the first glyph in pixels.
y	Top edge in pixels.
text	NUL-terminated string to draw.

draw_text_large()

void op::draw::draw_text_large ( int x, int y, const char * text )

inline

Draw a NUL-terminated string in the large 8x12 font.

Forwards to op::api->draw_text_large.

Parameters

x	Left edge of the first glyph in pixels.
y	Top edge in pixels.
text	NUL-terminated string to draw.

fill_rect()

void op::draw::fill_rect ( int x, int y, int w, int h, bool on )

inline

Fill or clear a rectangle.

Forwards to op::api->fill_rect.

Parameters

x	Left edge in pixels.
y	Top edge in pixels.
w	Width in pixels.
h	Height in pixels.
on	True sets the pixels, false clears them.

set_pixel()

void op::draw::set_pixel ( int x, int y, bool on )

inline

Plot or clear a single pixel.

Forwards to op::api->set_pixel (the firmware bounds-checks and no-ops off-screen plots).

Parameters

x	Column in pixels.
y	Row in pixels.
on	True sets the pixel, false clears it.