2.3 GFX Graphic Library
This library provides an interface to draw graphics on monochrome graphical displays. The graphics drivers consists of the following:
- Display driver interface (gfx_mono.h)
- General graphics drawing primitives (gfx_mono_generic.h)
- Display specific implementation (ex. gfx_mono_ug_2832hsweg04.h)
The generic drawing primitives is a library of functions for drawing graphics primitives such as lines, rectangles, and circles. It uses other functions implemented by the display driver for drawing the primitives. The implementation of these functions can optionally be used by a display driver, but if the hardware of the display allows faster handling of any of the primitives, the display driver can implement it directly.
Note: The functions in the library are not
interrupt safe.
The generic graphic library functions are listed below, implemented in gfx_mono_generic.h/c:
| Function | Description |
|---|---|
| gfx_mono_generic_put_bitmap() | Put bitmap from FLASH or RAM to display |
| gfx_mono_generic_draw_circle() | Draw an outline of a circle or arc |
| gfx_mono_generic_draw_filled_circle() | Draw a filled circle or sector |
| gfx_mono_generic_draw_filled_rect() | Draw a filled rectangle |
| gfx_mono_generic_draw_horizontal_line() | Draw a horizontal line, one pixel wide |
| gfx_mono_generic_draw_line() | Draw a line between two arbitrary points |
| gfx_mono_generic_draw_rect() | Draw an outline of a rectangle |
| gfx_mono_generic_draw_vertical_line() | Draw a vertical line, one pixel wide |