blob: 1316859a2a9e9cb84c949ff570334dc8f75ad5ec [file] [log] [blame]
// Copyright 2016 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#pragma once
#include <assert.h>
#include <gfx/gfx.h>
#include <hid/hid.h>
#include <lib/fdio/vfs.h>
#include <zircon/listnode.h>
#include <zircon/thread_annotations.h>
#include <port/port.h>
#include <stdbool.h>
#include <threads.h>
#include "textcon.h"
#define MAX_COLOR 0xf
zx_status_t vc_init_gfx(gfx_surface* gfx);
zx_status_t vc_init_gfx(zx_handle_t fb_vmo, int32_t width, int32_t height,
zx_pixel_format_t format, int32_t stride);
void vc_free_gfx();
typedef void (*keypress_handler_t)(uint8_t keycode, int modifiers);
zx_status_t new_input_device(int fd, keypress_handler_t handler);
// constraints on status bar tabs
#define MIN_TAB_WIDTH 16
#define MAX_TAB_WIDTH 32
typedef struct vc {
char title[MAX_TAB_WIDTH];
// vc title, shown in status bar
bool active;
unsigned flags;
zx_handle_t gfx_vmo;
int fd;
// backing store
const gfx_font* font;
vc_char_t* text_buf;
// text buffer
// Buffer containing scrollback lines. This is a circular buffer.
vc_char_t* scrollback_buf;
// Maximum number of rows that may be stored in the scrollback buffer.
unsigned scrollback_rows_max;
// Number of rows currently stored in the scrollback buffer.
unsigned scrollback_rows_count;
// Offset, in rows, of the oldest row in the scrollback buffer.
unsigned scrollback_offset;
unsigned rows, columns;
// screen size
unsigned charw, charh;
// size of character cell
int invy0, invy1;
// offscreen invalid lines, tracked during textcon drawing
unsigned cursor_x, cursor_y;
// cursor
bool hide_cursor;
// cursor visibility
int viewport_y;
// viewport position, must be <= 0
uint32_t palette[16];
uint8_t front_color;
uint8_t back_color;
// color
textcon_t textcon;
const keychar_t* keymap;
struct list_node node;
// for virtual console list
port_fd_handler fh;
zx_handle_t proc;
bool is_shell;
} vc_t;
// When VC_FLAG_HASOUTPUT is set, this indicates that there was output to
// the console that hasn't been displayed yet, because this console isn't
// visible.
#define VC_FLAG_HASOUTPUT (1 << 0)
#define VC_FLAG_FULLSCREEN (1 << 1)
const gfx_font* vc_get_font();
zx_status_t vc_alloc(vc_t** out, bool special);
void vc_attach_gfx(vc_t* vc);
void vc_free(vc_t* vc);
void vc_flush(vc_t* vc);
void vc_flush_all(vc_t* vc);
// called to re-draw the status bar after
// status-worthy vc or global state has changed
void vc_status_update();
// used by vc_status_invalidate to draw the status bar
void vc_status_clear();
void vc_status_write(int x, unsigned color, const char* text);
void vc_status_commit();
void vc_render(vc_t* vc);
void vc_full_repaint(vc_t* vc);
int vc_get_scrollback_lines(vc_t* vc);
vc_char_t* vc_get_scrollback_line_ptr(vc_t* vc, unsigned row);
void vc_scroll_viewport(vc_t* vc, int dir);
void vc_scroll_viewport_top(vc_t* vc);
void vc_scroll_viewport_bottom(vc_t* vc);
void vc_set_fullscreen(vc_t* vc, bool fullscreen);
ssize_t vc_write(vc_t* vc, const void* buf, size_t count,
zx_off_t off);
static inline int vc_rows(vc_t* vc) {
return vc->flags & VC_FLAG_FULLSCREEN ? vc->rows : vc->rows - 1;
// drawing:
void vc_gfx_invalidate_all(vc_t* vc);
void vc_gfx_invalidate_status();
// invalidates a region in characters
void vc_gfx_invalidate(vc_t* vc, unsigned x, unsigned y, unsigned w, unsigned h);
// invalidates a region in pixels
void vc_gfx_invalidate_region(vc_t* vc, unsigned x, unsigned y, unsigned w, unsigned h);
void vc_gfx_draw_char(vc_t* vc, vc_char_t ch, unsigned x, unsigned y,
bool invert);
static inline uint32_t palette_to_color(vc_t* vc, uint8_t color) {
assert(color <= MAX_COLOR);
return vc->palette[color];
extern port_t port;
extern bool g_vc_owns_display;
extern vc_t* g_active_vc;
extern int g_status_width;
void handle_key_press(uint8_t keycode, int modifiers);
void vc_toggle_framebuffer();
zx_status_t vc_create(vc_t** out, bool special);
void vc_destroy(vc_t* vc);
ssize_t vc_write(vc_t* vc, const void* buf, size_t count, zx_off_t off);
zx_status_t vc_set_active(int num, vc_t* vc);
void vc_show_active();
bool vc_display_init(void);
void set_log_listener_active(bool active);
zx_status_t handle_device_dir_event(port_handler_t* ph, zx_signals_t signals,
zx_status_t (*event_handler)(unsigned event, const char* msg));