diff options
| -rw-r--r-- | lib/tbi/win.c | 90 | ||||
| -rw-r--r-- | lib/tbi/win.h | 57 |
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 */ |