// display.c
// Author: Josh Holtrop
// Date: 08/07/04
// Modified: 03/19/05

#include "devices.h"
#include "char/vconsole.h"
#include "display.h"
#include "lang/lang.h"
#include "kernel.h"
#include "char/keyboard.h"
#include "display/kout.h"

extern real_mode_param_t rm_params;	// check if a video mode is activated
int display_type;
int display_activeConsole = -1;		// start with no active console


// initialization routine for display subsystem
int display_init()
{
	if (!rm_params.vid_addr)				// framebuffer mode
	{
		vconsole_setup(80, 25);
		display_activate(KERNEL_MSG_CONSOLE);
		display_type = DISPLAY_CONSOLE;
	}
	else
		display_type = DISPLAY_GRAPHICAL;
	return 0;
}


// activate the given display
int display_activate(u32_t id)
{
	if (id == display_activeConsole)
		return 0;
	if (display_type != DISPLAY_CONSOLE)
		return -1;
	if (id >= VCONSOLE_MAX)
		return -2;
	if (display_activeConsole >= 0)
		vconsole_deactivate(display_activeConsole);
	if (vconsole_activate(id))	// if true, didn't work to activate console
	{
		vconsole_activate(display_activeConsole);	// restore old one
		return -3;
	}
	display_activeConsole = id;
	return 0;
}

void display_key_event(u32_t keyCode)
{
	if (display_type == DISPLAY_CONSOLE)
	{
		u32_t kbdScan = KBD_SCAN(keyCode);
		if ( /* kbdFlags & KBDF_ALT && */ kbdScan >= 0x3B && kbdScan <= 0x44)	// switch displays F1-F10
		{
			display_activate(kbdScan - 0x3B);
			return;
		}
		if ( /* kbdFlags & KBDF_ALT && */ kbdScan >= 0x57 && kbdScan <= 0x58)	// F11-F12
		{
			display_activate(kbdScan - 0x4D);
			return;
		}
		if (KBD_ASCII(keyCode))
			putc(KBD_ASCII(keyCode));
	}
	/* TODO: send key to process on active console
	          or graphical control process */
}