implement a window entity

1 files changed, 57 insertions, 0 deletions

diff --git a/lib/tbi/win.h b/lib/tbi/win.h
new file mode 100644
index 0000000..2de5310
--- /dev/null
+++ b/lib/tbi/win.h
@@ -0,0 +1,57 @@
+#ifndef UFM_TBI_WINDOW_H
+#define UFM_TBI_WINDOW_H
+
+/*
+	Window - rectangular area of the screen with which you can work as a separate
+	screen (display text, clear, etc). The output should be carried out only in
+	the specified rectangular area of the screen
+
+	NOTE: SimpleTextOut.h has defined box-drawing character ("BOXDRAW_*", for
+	example BOXDRAW_VERTICAL)
+*/
+
+#include <Uefi.h>
+
+struct screen;
+
+struct window {
+	struct screen *scr; // parent screen
+
+	INT32 curx, cury; // current cursor position
+	INT32 begx, begy; // screen coords of upper left corner
+	INT32 width, height; // window size
+
+	CHAR16 **text; // the actual text of whole screen
+	/* ATTRIBUTES:
+	Bits 0..3 are the foreground color.
+	Bits 4..6 are the background color.
+	ALl other bits are undefined and must be zero */
+	INT32 **attr;
+
+	INT32 cur_attr;
+};
+
+/*
+ * Creates a window with given parameters
+ *
+ * s: the information of the screen
+ * ncols: the number of columns
+ * nlines: the number of lines
+ * begin_x: the column coordinate (starts from 0) of upper left corner of the window
+ * begin_y: the line coordinate (starts from 0) of upper left corner of the window
+ *
+ * return: A pointer to the allocated structure or NULL if allocation fails
+*/
+struct window *newwin(struct screen *s,
+	INT32 ncols, INT32 nlines, INT32 begin_x, INT32 begin_y);
+
+/*
+ * Deletes the window, frees the structure
+ *
+ * w: the window on which to operate
+ *
+ * return: VOID
+*/
+VOID delwin(struct window *w);
+
+#endif /* UFM_TBI_WINDOW_H */