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-rw-r--r--lib/tbi/win.c90
-rw-r--r--lib/tbi/win.h57
2 files changed, 147 insertions, 0 deletions
diff --git a/lib/tbi/win.c b/lib/tbi/win.c
new file mode 100644
index 0000000..69ba895
--- /dev/null
+++ b/lib/tbi/win.c
@@ -0,0 +1,90 @@
+#include <Uefi.h>
+#include <Library/UefiLib.h>
+#include <Library/DebugLib.h>
+#include <Library/ShellLib.h>
+#include <Library/MemoryAllocationLib.h>
+
+#include "screen.h"
+#include "win.h"
+
+struct window *newwin(struct screen *s,
+ INT32 ncols, INT32 nlines, INT32 begin_x, INT32 begin_y)
+{
+ INTN x, y;
+ struct window *win;
+
+ ASSERT(s != NULL);
+
+ if(ncols <= 0 || nlines <= 0 || begin_x < 0 || begin_y < 0)
+ return NULL;
+
+ if((begin_x + ncols) > s->columns || (begin_y + nlines) > s->lines)
+ return NULL;
+
+ win = AllocateZeroPool(sizeof(struct window));
+ if(!win)
+ return NULL;
+
+ win->text = AllocatePool(nlines * sizeof(CHAR16 *));
+ if(!win->text) {
+ delwin(win);
+ return NULL;
+ }
+
+ win->attr = AllocatePool(nlines * sizeof(INT32 *));
+ if(!win->attr) {
+ delwin(win);
+ return NULL;
+ }
+
+ win->scr = s;
+ win->curx = 0;
+ win->cury = 0;
+ win->begx = begin_x;
+ win->begy = begin_y;
+ win->width = ncols;
+ win->height = nlines;
+ win->cur_attr = s->attr;
+
+ for(y = 0; y < nlines; y++) {
+ win->text[y] = AllocatePool((ncols + 1) * sizeof(CHAR16));
+ win->attr[y] = AllocatePool((ncols + 1) * sizeof(INT32));
+ if(!win->text[y] || !win->attr[y]) {
+ delwin(win);
+ return NULL;
+ }
+
+ for(x = 0; x < ncols; x++) {
+ win->text[y][x] = L' ';
+ win->attr[y][x] = win->cur_attr;
+ }
+ win->text[y][x] = CHAR_NULL;
+ win->attr[y][x] = win->cur_attr;
+ }
+
+ return win;
+}
+
+VOID delwin(struct window *w)
+{
+ INTN i;
+ ASSERT(w != NULL);
+
+ if(w->text) {
+ for(i = 0; i < w->height; i++) {
+ if(w->text[i])
+ FreePool(w->text[i]);
+ }
+ FreePool(w->text);
+ }
+
+ if(w->attr) {
+ for(i = 0; i < w->height; i++) {
+ if(w->attr[i])
+ FreePool(w->attr[i]);
+ }
+ FreePool(w->attr);
+ }
+
+ FreePool(w);
+}
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 */