From 1610ce54d4dbc7c73dac837cdda2eb23520bc1c6 Mon Sep 17 00:00:00 2001
From: Joursoir <chat@joursoir.net>
Date: Wed, 1 Dec 2021 20:06:47 +0300
Subject: implement the command bar

---
 Library/UefiShellUfmCommandLib/command-bar.c | 59 ++++++++++++++++++++++++++++
 Library/UefiShellUfmCommandLib/command-bar.h | 21 ++++++++++
 2 files changed, 80 insertions(+)
 create mode 100644 Library/UefiShellUfmCommandLib/command-bar.c
 create mode 100644 Library/UefiShellUfmCommandLib/command-bar.h

diff --git a/Library/UefiShellUfmCommandLib/command-bar.c b/Library/UefiShellUfmCommandLib/command-bar.c
new file mode 100644
index 0000000..06c5bf2
--- /dev/null
+++ b/Library/UefiShellUfmCommandLib/command-bar.c
@@ -0,0 +1,59 @@
+#include <Library/DebugLib.h>
+
+#include "tbi/screen.h"
+#include "tbi/win.h"
+#include "actions.h"
+#include "command-bar.h"
+
+#define BUTTON_LENGTH 2
+
+struct window *init_cmdbar(struct screen *scr, CONST struct shortcut *shortcuts)
+{
+	UINTN i, cmd_length, attr_button, attr_cmd;
+	UINTN amount_cmds = 0;
+	struct window *cmdbar;
+
+	attr_button = EFI_TEXT_ATTR(EFI_WHITE, EFI_LIGHTGRAY);
+	attr_cmd = EFI_TEXT_ATTR(EFI_DARKGRAY, EFI_CYAN);
+
+	/* Why scr->columns-1 and not src->columns? Because EFI Shell moves
+	the cursor to a new line, after writing to the last cell of the line.
+	Therefore, menu bar will dissapear from the first line and there will be
+	an empty last line */
+	cmdbar = newwin(scr, scr->columns - 1, 1, 0, scr->lines - 1);
+	if(!cmdbar)
+		return NULL;
+
+	for(i = 0; shortcuts[i].type != ACTION_LAST; i++) {
+		if(shortcuts[i].type == ACTION_CMD)
+			amount_cmds++;
+	}
+
+	cmd_length = ((cmdbar->width + 1) - (BUTTON_LENGTH * amount_cmds)) / amount_cmds;
+	for(i = 0; shortcuts[i].type != ACTION_LAST; i++) {
+		if(shortcuts[i].type == ACTION_CMD) {
+			wattrset(cmdbar, attr_button);
+			wprintf(cmdbar, L"%*s", BUTTON_LENGTH, shortcuts[i].button_name);
+			wattrset(cmdbar, attr_cmd);
+			wprintf(cmdbar, L"%-*s", cmd_length, shortcuts[i].cmd_name);
+		}
+	}
+
+	wattroff(cmdbar);
+	cmdbar_refresh(cmdbar);
+	return cmdbar;
+}
+
+VOID free_cmdbar(struct window *w)
+{
+	ASSERT(w != NULL);
+
+	delwin(w);
+}
+
+VOID cmdbar_refresh(struct window *w)
+{
+	ASSERT(w != NULL);
+	
+	wrefresh(w);
+}
diff --git a/Library/UefiShellUfmCommandLib/command-bar.h b/Library/UefiShellUfmCommandLib/command-bar.h
new file mode 100644
index 0000000..274bb02
--- /dev/null
+++ b/Library/UefiShellUfmCommandLib/command-bar.h
@@ -0,0 +1,21 @@
+#ifndef UFM_COMMAND_BAR_H
+#define UFM_COMMAND_BAR_H
+
+/*
+ * Command bar: 
+ * Located on the last line, occupies its entire length.
+ * Contains a list of actions and buttons that require to press for
+ * perform the operation.
+*/
+
+#include <Uefi.h>
+
+struct screen;
+struct window;
+struct shortcut;
+
+struct window *init_cmdbar(struct screen *scr, CONST struct shortcut *shortcuts);
+VOID free_cmdbar(struct window *w);
+VOID cmdbar_refresh(struct window *w);
+
+#endif /* UFM_COMMAND_BAR_H */
-- 
cgit v1.2.3-18-g5258