GUI Desktop

This pretty much manages everything that gets drawn on the screen. Originally written in C, rewritten and documented in C++.

How the desktop works

[start_desktop called] –> [Mouse position reset to (0, 0)] –> [(vbe_clear_screen called) Screen cleared (Set to 0x000000ff)] –> [Starts loop]

What the loop does:

[Check for PS/2 Keyboard events (key_event_t defined, ps2_get_key_event called)] –> [Check for PS/2 Mouse events (mouse_event_t defined, ps2_get_mouse_event called)] –> [Redraws cursor if mouse has moved, handles button presses, etc]

desktop.cpp

Includes

Headers included in desktop.cpp

  • desktop.h
  • As external “C”
    • Point.h
    • bindraw.h (For drawing in binary)
    • ../drivers/ps2_keyboard.h
    • ../drivers/ps2_mouse.h
    • ../drivers/vbe.h

Functions

Functions declared in desktop.cpp

  • start_desktop

desktop.h

Includes

Headers included in desktop.h

  • ../drivers/types.h

Functions

  • start_desktop

Definitions 

void start_desktop();