static
void window_redraw(Window *w, Graphics *g)
{
Rect r;
Point p;
int l, h;
int length;
char *buffer;
assert(lines != NULL);
/* Each wide char is encoded in at most 6 UTF8 characters. For the Base Plane,
* 3 UTF8 characters per Unicode character is enough
*/
buffer = malloc((6 * NUM_COLUMNS + 1) * sizeof(char));
if (buffer != NULL) {
r = get_window_area(w);
set_rgb(g, rgb(240,240,240)); //??? attrib
fill_rect(g, r);
set_rgb(g, rgb(0,0,0)); //??? attrib
set_font(g, font);
set_text_direction(g, LR_TB);
p = pt(0,0);
h = font_height(font);
for (l = 0; l < NUM_LINES; l++) {
#if defined _UNICODE
/* convert the line to UTF8 */
int c;
char *ptr;
for (c = 0, ptr = buffer; c < NUM_COLUMNS; c++)
amx_UTF8Put(ptr, &ptr, 6, lines + l * NUM_COLUMNS + c);
*ptr = '\0';
length = (int)(ptr - buffer);
#else
/* assume line is ASCII */
memcpy(buffer, lines + l * NUM_COLUMNS, NUM_COLUMNS);
buffer[NUM_COLUMNS] = '\0';
length = NUM_COLUMNS;
#endif
/* draw the line */
draw_utf8(g, p, buffer, length);
p.y += h;
if (p.y > r.height)
break;
} /* if */
free(buffer);
} /* if */
}
static void refresh_screen(int top, int bottom)
{
Rect r;
int h;
if (top != bottom) {
assert(win != NULL);
r = get_window_area(win);
assert(font != NULL);
h = font_height(font);
redraw_rect(win, rect(0, top * h, r.width, (bottom - top) * h));
} /* if */
//??? set to draw a caret
}
/* dx = in columns, dy = in lines */
void scroll_window(int dx, int dy)
{
Graphics *g;
Rect r;
Point p;
/* a negative value scrolls up */
assert(lines != NULL);
if (dy < 0) {
assert(-dy < NUM_LINES);
memmove(lines,lines-dy*NUM_COLUMNS,(NUM_LINES+dy)*NUM_COLUMNS*sizeof(TCHAR));
memset(lines+(NUM_LINES+dy)*NUM_COLUMNS*sizeof(TCHAR), __T(' '), -dy*NUM_COLUMNS);
} else if (dy > 0) {
assert(dy < NUM_LINES);
memmove(lines+dy*NUM_COLUMNS,lines,(NUM_LINES-dy)*NUM_COLUMNS*sizeof(TCHAR));
memset(lines, __T(' '), dy*NUM_COLUMNS);
} /* if */
csry += dy;
if (csry < 0)
csry = 0;
if (csry >= NUM_LINES)
csry=NUM_LINES - 1;
assert(font != NULL);
dx *= font_width(font, "x", 1);
dy *= font_height(font);
g = get_window_graphics(win);
r = get_window_area(win);
p = pt(r.x + dx, r.y + dy);
copy_rect(g, p, g, r);
if (dy > 0) {
/* moving window contents downwards */
redraw_rect(win, rect(0,0,r.width,dy));
} else if (dy < 0) {
/* moving window contents upwards */
redraw_rect(win, rect(0,r.height+dy,r.width,0-dy));
} /* if */
if (dx > 0) {
/* moving window contents to the right */
redraw_rect(win, rect(0,0,dx,r.height));
} else if (dx < 0) {
/* moving window contents to the left */
redraw_rect(win, rect(r.width+dx,0,0-dx,r.height));
} /* if */
del_graphics(g);
}
