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textwin.c
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textwin.c
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/* This is the mother of all bastard code. It mixes character (cell)
* calculations with pixel shuffling and the result makes every sane
* human being copiously vomit!
*
* A much better organization would split this monster up into three
* different classes: A character grid that exposes a vertically
* scrollable region, keeps track of the cursor position and so on.
* Another class that transforms this grid into the interiors of the
* window, always relative to the window origin. And finally the
* class that transforms the relative data for the workspace to actual
* screen coordinates, takes window decorations into account and
* interacts with the window system.
*
* This would probably even be faster, because it would be a lot easier
* to stuff multiple update operations into one single call to the
*
*/
#include <mintbind.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <string.h>
#include <limits.h>
#include <stdio.h>
#include "textwin.h"
#include "event.h"
#include "console.h"
#include "ansicol.h"
#include "isotost.h"
#include "vt.h"
#include "clipbrd.h"
#include "proc.h"
#include "av.h"
#include "drag.h"
#define CLEARED 2 /* redrawing a cleared area */
/*
* lokale Variablen
*/
static MFDB scr_mfdb; /* left NULL so it refers to the screen by default */
/*
* lokale Prototypen
*/
static void draw_buf(TEXTWIN *t, char *buf, short x, short y, unsigned long flag, short force);
static void update_chars(TEXTWIN *t, short firstcol, short lastcol, short firstline, short lastline, short force);
static void update_screen (TEXTWIN *t, short xc, short yc, short wc, short hc,
short force);
static void update_cursor (WINDOW* win, int top);
static void draw_textwin(WINDOW *v, short x, short y, short w, short h);
static void close_textwin(WINDOW *v);
static void full_textwin(WINDOW *v);
static void move_textwin(WINDOW *v, short x, short y, short w, short h);
static void size_textwin(WINDOW *v, short x, short y, short w, short h);
static void newyoff(TEXTWIN *t, short y);
static void scrollupdn(TEXTWIN *t, short off, short direction);
static void arrow_textwin(WINDOW *v, short msg);
static void vslid_textwin(WINDOW *v, short vpos);
static void set_scroll_bars(TEXTWIN *t);
static void set_cwidths(TEXTWIN *t);
static void notify_winch (TEXTWIN* tw);
static void reread_size (TEXTWIN* t);
static void change_scrollback (TEXTWIN* t, short scrollback);
static void change_height (TEXTWIN* t, short rows);
static void change_width (TEXTWIN* t, short cols);
/* functions for converting x, y pixels to/from character coordinates */
/* NOTES: these functions give the upper left corner; to actually draw
* a character, they must be adjusted down by t->cbase
* Also: char2pixel accepts out of range character/column combinations,
* but pixel2char never will generate such combinations.
*/
void char2pixel(TEXTWIN *t, short col, short row, short *xp, short *yp)
{
short *WIDE = t->cwidths;
short x;
*yp = t->win->work.g_y - t->offy + row * t->cheight;
if (!WIDE)
{
*xp = t->win->work.g_x + col * t->cmaxwidth;
}
else
{
if (col >= NCOLS (t))
*xp = t->win->work.g_x + t->win->work.g_w;
else
{
x = t->win->work.g_x;
while(--col >= 0)
x += WIDE[t->cdata[row][col]];
*xp = x;
}
}
}
static void
char2grect (TEXTWIN* t, short col, short row, GRECT* g)
{
short* WIDE = t->cwidths;
g->g_y = t->win->work.g_y - t->offy + row * t->cheight;
g->g_h = t->cheight;
if (!WIDE) {
g->g_x = t->win->work.g_x + col * t->cmaxwidth;
g->g_w = t->cmaxwidth;
} else {
if (col >= NCOLS (t)) {
g->g_x = t->win->work.g_x + t->win->work.g_w;
g->g_w = 0;
} else {
short x = t->win->work.g_x;
while(--col >= 0)
x += WIDE[t->cdata[row][col]];
g->g_x = x;
g->g_w = WIDE[t->cdata[row][col]];
}
}
}
void pixel2char(TEXTWIN *t, short x, short y, short *colp, short *rowp)
{
short col, row, count, nextcount;
short *WIDE = t->cwidths;
row = (y - t->win->work.g_y + t->offy) / t->cheight;
x -= t->win->work.g_x;
if (WIDE == 0)
col = x / t->cmaxwidth;
else
{
count = 0;
for (col = 0; col <= NCOLS (t); col++)
{
nextcount = count + WIDE[t->cdata[row][col]];
if (count <= x && x < nextcount)
break;
count = nextcount;
}
}
*rowp = row;
*colp = col;
}
/* Draw a string in the alternate character set. */
static void
draw_acs_text(TEXTWIN* t, short textcolor, short x, short y, char* buf)
{
char* crs = buf;
short max_x = x + t->win->work.g_w; /* FIXME: -1 ? */
short cwidth = t->cmaxwidth;
short cheight = t->cheight;
short pxy[8];
short box = cwidth > cheight ? cheight - 1 : cwidth - 1;
char letter[2] = { '\0', '\0' };
while (*crs && x < max_x)
{
switch (*crs)
{
case '}': /* ACS_STERLING */
/* We assume that if the Atari font is
* selected,
* we have a font that is already in ISO-Latin 1.
*/
letter[0] = t->cfg->char_tab == TAB_ATARI ?
'\243' : '\234';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
break;
case '.': /* ACS_DARROW */
/* We assume that if the Atari font is
* selected,
* we have a font that is already in ISO-Latin 1.
*/
letter[0] = t->cfg->char_tab == TAB_ATARI ?
'v' : '\002';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
break;
case ',': /* ACS_LARROW */
/* We assume that if the Atari font is
* selected,
* we have a font that is already in ISO-Latin 1.
*/
letter[0] = t->cfg->char_tab == TAB_ATARI ?
'<' : '\004';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
break;
case '+': /* ACS_RARROW */
/* We assume that if the Atari font is
* selected,
* we have a font that is already in ISO-Latin 1.
*/
letter[0] = t->cfg->char_tab == TAB_ATARI ?
'>' : '\003';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
break;
case '-': /* ACS_UARROW */
/* We assume that if the Atari font is
* selected,
* we have a font that is already in ISO-Latin 1.
*/
letter[0] = t->cfg->char_tab == TAB_ATARI ?
'^' : '\001';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
break;
case 'h': /* ACS_BOARD */
pxy[0] = x;
pxy[1] = y;
pxy[2] = x + cwidth - 1;
pxy[3] = y + cheight - 1;
set_fillcolor (textcolor);
set_fillstyle (2, 22);
vsf_perimeter (vdi_handle, 0);
v_bar (vdi_handle, pxy);
break;
case '~': /* ACS_BULLET */
/* We assume that if the Atari font is
* selected,
* we have a font that is already in ISO-Latin 1.
*/
letter[0] = t->cfg->char_tab == TAB_ATARI ?
'o' : '\372';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
break;
case 'a': /* ACS_CKBOARD */
pxy[0] = x;
pxy[1] = y;
pxy[2] = x + cwidth - 1;
pxy[3] = y + t->cheight - 1;
set_fillcolor (textcolor);
set_fillstyle (2, 2);
vsf_perimeter (vdi_handle, 0);
v_bar (vdi_handle, pxy);
break;
case 'f': /* ACS_DEGREE */
/* We assume that if the Atari font is
* selected,
* we have a font that is already in ISO-Latin 1.
*/
letter[0] = t->cfg->char_tab == TAB_ATARI ?
'\260' : '\370';
set_textcolor (textcolor);
set_texteffects (0);
v_gtext(vdi_handle, x, y + t->cbase, letter);
break;
case '`': /* ACS_DIAMOND */
pxy[0] = x + (cwidth >> 1);
pxy[1] = y + (cheight >> 1) - (box >> 1);
pxy[2] = pxy[0] + (box >> 1);
pxy[3] = y + (cheight >> 1);
pxy[4] = pxy[0];
pxy[5] = pxy[3] + (box >> 1);
pxy[6] = pxy[0] - (box >> 1);
pxy[7] = pxy[3];
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_fillarea (vdi_handle, 4, pxy);
break;
case 'z': /* ACS_GEQUAL */
/* We assume that if the Atari font is
* selected,
* we have a font that is already in ISO-Latin 1.
*/
letter[0] = t->cfg->char_tab == TAB_ATARI ?
'>' : '\362';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
if (t->cfg->char_tab != TAB_ATARI) {
letter[0] = '_';
v_gtext (vdi_handle, x, y + t->cbase, letter);
}
break;
case '{': /* ACS_PI */
/* We assume that if the Atari font is
* selected,
* we have a font that is already in ISO-Latin 1.
*/
if (t->cfg->char_tab != TAB_ATARI) {
letter[0] = '\343';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
} else {
/* FIXME: Paint greek letter pi. */
letter[0] = '*';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
}
break;
case 'q': /* ACS_HLINE */
pxy[0] = x;
pxy[1] = y + (cheight >> 1);
pxy[2] = x + cwidth - 1;
pxy[3] = pxy[1];
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_bar (vdi_handle, pxy);
break;
case 'i': /* ACS_LANTERN */
set_fillcolor (textcolor);
set_fillstyle (1, 1);
pxy[0] = x;
pxy[1] = y + (cheight >> 1) - 1;
pxy[2] = x + cwidth - 1;
pxy[3] = pxy[1];
v_bar (vdi_handle, pxy);
pxy[1] = y + (cheight >> 1) + 1;
pxy[3] = pxy[1];
v_bar (vdi_handle, pxy);
pxy[0] = x + (cwidth >> 1) - 1;
pxy[1] = y;
pxy[2] = pxy[0];
pxy[3] = y + (cheight >> 1) - 1;
v_bar (vdi_handle, pxy);
pxy[0] = x + (cwidth >> 1) + 1;
pxy[1] = y;
pxy[2] = pxy[0];
pxy[3] = y + (cheight >> 1) - 1;
v_bar (vdi_handle, pxy);
pxy[1] = y + cheight - 1;
v_bar (vdi_handle, pxy);
pxy[0] = x + (cwidth >> 1) - 1;
pxy[2] = pxy[0];
v_bar (vdi_handle, pxy);
break;
case 'n': /* ACS_PLUS */
pxy[0] = x;
pxy[1] = y + (cheight >> 1);
pxy[2] = x + cwidth - 1;
pxy[3] = pxy[1];
pxy[4] = x + (cwidth >> 1);
pxy[5] = y;
pxy[6] = pxy[4];
pxy[7] = y + cheight - 1;
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_bar (vdi_handle, pxy);
v_bar (vdi_handle, pxy + 4);
break;
case 'y': /* ACS_LEQUAL */
/* We assume that if the Atari font is
* selected,
* we have a font that is already in ISO-Latin 1.
*/
letter[0] = t->cfg->char_tab == TAB_ATARI ?
'y' : '\363';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
if (t->cfg->char_tab != TAB_ATARI) {
letter[0] = '_';
v_gtext (vdi_handle, x, y + t->cbase, letter);
}
break;
case 'm': /* ACS_LLCORNER */
pxy[0] = x + (cwidth >> 1);
pxy[1] = y;
pxy[2] = pxy[0];
pxy[3] = y + (cheight >> 1);
pxy[4] = x + cwidth - 1;
pxy[5] = pxy[3];
vsl_type (vdi_handle, 1);
vsl_color (vdi_handle, textcolor);
v_pline (vdi_handle, 3, pxy);
break;
case 'j': /* ACS_LRCORNER */
pxy[0] = x + (cwidth >> 1);
pxy[1] = y;
pxy[2] = pxy[0];
pxy[3] = y + (cheight >> 1);
pxy[4] = x;
pxy[5] = pxy[3];
vsl_type (vdi_handle, 1);
vsl_color (vdi_handle, textcolor);
v_pline (vdi_handle, 3, pxy);
break;
case '|': /* ACS_NEQUAL */
letter[0] = '=';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
letter[0] = '/';
v_gtext (vdi_handle, x, y + t->cbase, letter);
break;
case 'g': /* ACS_PLMINUS */
/* We assume that if the Atari font is
* selected,
* we have a font that is already in ISO-Latin 1.
*/
letter[0] = t->cfg->char_tab == TAB_ATARI ?
'\261' : '\361';
set_textcolor (textcolor);
v_gtext (vdi_handle, x, y + t->cbase, letter);
break;
case 'o': /* ACS_S1 */
pxy[0] = x;
pxy[1] = y;
pxy[2] = x + cwidth - 1;
pxy[3] = y;
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_bar (vdi_handle, pxy);
break;
case 'p': /* ACS_S3 */
pxy[0] = x;
pxy[1] = y + cheight / 3;
pxy[2] = x + cwidth - 1;
pxy[3] = pxy[1];
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_bar (vdi_handle, pxy);
break;
case 'r': /* ACS_S7 */
pxy[0] = x;
pxy[1] = y + cheight - cheight / 3;
pxy[2] = x + cwidth - 1;
pxy[3] = pxy[1];
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_bar (vdi_handle, pxy);
break;
case 's': /* ACS_S9 */
pxy[0] = x;
pxy[1] = y + cheight - 1;
pxy[2] = x + cwidth - 1;
pxy[3] = pxy[1];
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_bar (vdi_handle, pxy);
break;
case '0': /* ACS_BLOCK */
pxy[0] = x;
pxy[1] = y;
pxy[2] = x + cwidth - 1;
pxy[3] = y + cheight - 1;
set_fillcolor (textcolor);
set_fillstyle (1, 1);
vsf_perimeter (vdi_handle, 0);
v_bar (vdi_handle, pxy);
break;
case 'w': /* ACS_TTEE */
pxy[0] = x;
pxy[1] = y + (cheight >> 1);
pxy[2] = x + cwidth - 1;
pxy[3] = pxy[1];
pxy[4] = x + (cwidth >> 1);
pxy[5] = pxy[1];
pxy[6] = pxy[4];
pxy[7] = y + cheight - 1;
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_bar (vdi_handle, pxy);
v_bar (vdi_handle, pxy + 4);
break;
case 'u': /* ACS_RTEE */
pxy[0] = x + (cwidth >> 1);
pxy[1] = y;
pxy[2] = pxy[0];
pxy[3] = y + cheight - 1;
pxy[4] = x;
pxy[5] = y + (cheight >> 1);
pxy[6] = pxy[0];
pxy[7] = pxy[5];
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_bar (vdi_handle, pxy);
v_bar (vdi_handle, pxy + 4);
break;
case 't': /* ACS_LTEE */
pxy[0] = x + (cwidth >> 1);
pxy[1] = y;
pxy[2] = pxy[0];
pxy[3] = y + cheight - 1;
pxy[4] = pxy[0];
pxy[5] = y + (cheight >> 1);
pxy[6] = x + cwidth - 1;
pxy[7] = pxy[5];
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_bar (vdi_handle, pxy);
v_bar (vdi_handle, pxy + 4);
break;
case 'v': /* ACS_BTEE */
pxy[0] = x;
pxy[1] = y + (cheight >> 1);
pxy[2] = x + cwidth - 1;
pxy[3] = pxy[1];
pxy[4] = x + (cwidth >> 1);
pxy[5] = y;
pxy[6] = pxy[4];
pxy[7] = pxy[1];
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_bar (vdi_handle, pxy);
v_bar (vdi_handle, pxy + 4);
break;
case 'l': /* ACS_ULCORNER */
pxy[0] = x + (cwidth >> 1);
pxy[1] = y + cheight - 1;
pxy[2] = pxy[0];
pxy[3] = y + (cheight >> 1);
pxy[4] = x + cwidth - 1;
pxy[5] = pxy[3];
vsl_type (vdi_handle, 1);
vsl_color (vdi_handle, textcolor);
v_pline (vdi_handle, 3, pxy);
break;
case 'k': /* ACS_URCORNER */
pxy[0] = x;
pxy[1] = y + (cheight >> 1);
pxy[2] = x + (cwidth >> 1);
pxy[3] = pxy[1];
pxy[4] = pxy[2];
pxy[5] = y + cheight - 1;
vsl_type (vdi_handle, 1);
vsl_color (vdi_handle, textcolor);
v_pline (vdi_handle, 3, pxy);
break;
case 'x': /* ACS_VLINE */
pxy[0] = x + (cwidth >> 1);
pxy[1] = y;
pxy[2] = pxy[0];
pxy[3] = y + cheight - 1;
set_fillcolor (textcolor);
set_fillstyle (1, 1);
v_bar (vdi_handle, pxy);
break;
default:
break;
}
++crs;
x += cwidth;
}
}
/*
* draw a (part of a) line on screen, with certain attributes (e.g.
* inverse video) indicated by "flag". (x, y) is the upper left corner
* of the box which will contain the line.
* If "force" is 1, we may assume that the screen is already cleared
* (this is done in update_screen() for us).
* SPECIAL CASE: if buf is an empty string, we clear from "x" to
* the end of the window.
*/
static void draw_buf(TEXTWIN *t, char *buf, short x, short y, unsigned long flag, short force)
{
char *s, *lastnonblank;
int x2, fillcolor, textcolor;
int texteffects;
short *WIDE = t->cwidths;
short temp[4];
int acs = flag & CLINEDRAW;
use_ansi_colors (t, flag, &textcolor, &fillcolor, &texteffects);
x2 = x;
s = buf;
if (*s)
{
lastnonblank = s-1;
while (*s)
{
if (*s != ' ') lastnonblank = s;
if (WIDE)
x2 += WIDE[(short)*s];
else
x2 += t->cmaxwidth;
s++;
}
lastnonblank++;
if (!(flag & CE_UNDERLINE))
*lastnonblank = 0;
}
else
x2 = t->win->work.g_x + t->win->work.g_w;
set_wrmode(2); /* transparent text */
if (fillcolor >= 0 || (force != CLEARED))
{
temp[0] = x;
temp[1] = y;
temp[2] = x2 - 1;
temp[3] = y + t->cheight - 1;
set_fillcolor(fillcolor);
set_fillstyle(1, 1);
v_bar(vdi_handle, temp);
}
/* skip leading blanks -- we don't need to draw them again! */
if (!(flag & CE_UNDERLINE))
{
while (*buf == ' ')
{
buf++;
x += WIDE ? WIDE[' '] : t->cmaxwidth;
}
}
if (*buf)
{
if (acs)
{
draw_acs_text(t, textcolor, x, y, buf);
}
else
{
set_textcolor(textcolor);
set_texteffects(texteffects);
v_gtext(vdi_handle, x, y + t->cbase, buf);
}
}
}
/*
* update the characters on screen between "firstline,firstcol" and
* "lastline-1,lastcol-1" (inclusive)
* if force == 1, the redraw must occur, otherwise it occurs only for
* "dirty" characters. Note that we assume here that clipping
* rectanges and wind_update() have already been set for us.
*/
static void
update_chars (TEXTWIN *t, short firstcol, short lastcol, short firstline,
short lastline, short force)
{
#define CBUFSIZ 127
char buf[CBUFSIZ+1];
unsigned char c;
short px, py, ax, i, cnt, bufwidth;
unsigned long flag;
short *WIDE = t->cwidths;
short lineforce = 0;
unsigned long curflag;
#define flushbuf() \
{ \
buf[i] = 0; \
draw_buf(t, buf, px, py, flag, lineforce); \
px += bufwidth; \
i = bufwidth = 0; \
}
if (t->windirty)
reread_size (t);
t->windirty = 0;
/* make sure the font is set correctly */
set_font(t->cfont, t->cpoints);
/* find the place to start writing */
char2pixel(t, firstcol, firstline, &ax, &py);
/* now write the characters we need to */
while (firstline < lastline)
{
/* if no characters on the line need re-writing, skip the loop */
if (!force && t->dirty[firstline] == 0)
{
py += t->cheight;
firstline++;
continue;
}
px = ax;
/*
* now, go along collecting characters to write into the buffer
* we add a character to the buffer if and only if (1) the
* character's attributes (inverse video, etc.) match the
* attributes of the character already in the buffer, and
* (2) the character needs redrawing. Otherwise, if there are
* characters in the buffer, we flush the buffer.
*/
i = bufwidth = 0;
cnt = firstcol;
flag = 0;
lineforce = force;
if (!lineforce && (t->dirty[firstline] & ALLDIRTY))
lineforce = 1;
while (cnt < lastcol)
{
c = t->cdata[firstline][cnt];
if (lineforce || (t->cflags[firstline][cnt] & (CDIRTY)))
{
/* yes, this character needs drawing */
/* if the font is proportional and the character has really changed,
* then all remaining characters will have to be redrawn, too
*/
if (WIDE && (lineforce == 0) && (t->cflags[firstline][cnt] & CDIRTY))
lineforce = 1;
curflag = t->cflags[firstline][cnt] & ~(CDIRTY);
/* watch out for characters that can't be drawn in this font */
if (!(curflag & CLINEDRAW) && (c < t->minADE || c > t->maxADE))
c = '?';
if (flag == curflag)
{
buf[i++] = c;
bufwidth += (WIDE ? WIDE[c] : t->cmaxwidth);
if (i == CBUFSIZ)
{
flushbuf();
}
}
else
{
if (i)
{
flushbuf();
}
flag = curflag;
buf[i++] = c;
bufwidth += (WIDE ? WIDE[c] : t->cmaxwidth);
}
}
else
{
if (i)
{
flushbuf();
}
px += (WIDE ? WIDE[c] : t->cmaxwidth);
}
cnt++;
} /* while */
if (i)
{
flushbuf();
}
if (WIDE)
{
/* the line's 'tail' */
draw_buf(t, "", px, py, t->cflags[firstline][NCOLS (t) - 1], lineforce);
}
py += t->cheight;
firstline++;
}
t->curs_drawn = 0;
if (t->curr_tflags & TCURS_ON)
update_cursor (t->win, -1);
}
/* Update the cursor. FIXME: This function nests to deep. */
static void
update_cursor (WINDOW* win, int top)
{
TEXTWIN* tw = win->extra;
bool force_draw = FALSE;
GRECT curr, work;
GRECT new_curs = { 0, 0, 0, 0 };
GRECT old_curs = { 0, 0, 0, 0 };
bool off = FALSE;
unsigned long old_flag = 0;
unsigned long new_flag = 0;
if (win->redraw)
return;
if (top == 1)
tw->wintop = 1;
else if (top == 0) {
tw->wintop = 0;
if (!tw->curs_drawn)
force_draw = TRUE;
} else if (top == -1) {
force_draw = TRUE;
}
/* Exits if window isn't visible or was iconified/shaded */
if (win->handle < 0 || (win->flags & WICONIFIED) ||
(win->flags & WSHADED) ||
(!(tw->curr_tflags & TCURS_ON) && !tw->curs_drawn)) {
tw->last_cx = tw->last_cy = -1;
return;
}
/* If the window is not on top we only have to draw something if a
redraw has been forced by the caller or the cursor is currently
not showing. */
if (!force_draw && !tw->wintop && tw->curs_drawn)
return;
work = win->work;
if (!rc_intersect (&gl_desk, &work))
return;
/* If the cursor simply flashes there is no need to remove it from
the old position. */
if ((tw->last_cx != tw->cx || tw->last_cy != tw->cy) &&
(tw->last_cx >= 0 && tw->last_cy >= tw->miny) &&
tw->last_cx < tw->maxx && tw->last_cy < tw->maxy) {
old_flag = tw->cflags[tw->last_cy][tw->last_cx];
char2grect (tw, tw->last_cx, tw->last_cy, &old_curs);
if (tw->curr_tflags & TCURS_VVIS) {
int selected = old_flag & CINVERSE;
if (!selected)
old_flag &= ~CINVERSE;
else
old_flag |= CINVERSE;
}
}
char2grect (tw, tw->cx, tw->cy, &new_curs);
if (tw->cx >= 0 && tw->cx < tw->maxx &&
tw->cy >= tw->miny && tw->cy < tw->maxy)
new_flag = tw->cflags[tw->cy][tw->cx];
else
new_curs.g_w = 0;
if (force_draw || !tw->curs_drawn)
tw->curs_drawn = 1;
else
tw->curs_drawn = 0;
if (tw->curr_tflags & TCURS_VVIS) {
int selected = new_flag & CINVERSE;
if (selected ^ tw->curs_drawn)
new_flag |= CINVERSE;
else
new_flag &= ~CINVERSE;
} else if (tw->curs_drawn) {
new_curs.g_y += tw->curs_offy;
new_curs.g_h = tw->curs_height;
}
tw->dirty[tw->cy] |= SOMEDIRTY;
tw->cflags[tw->cy][tw->cx] |= CDIRTY;
if (win->redraw)
fprintf (stderr, "ALERT: Another redraw is already in progress!\n");
win->redraw = 1;
update_window_lock();
get_window_rect (win, WF_FIRSTXYWH, &curr);
while (curr.g_w && curr.g_h) {
if (rc_intersect (&work, &curr)) {
if (old_curs.g_w) {
GRECT curr2 = curr;
if (rc_intersect (&old_curs, &curr2)) {
char buf[2];
if (!off)
off = hide_mouse_if_needed(&curr2);
set_clipping (vdi_handle,
curr2.g_x,
curr2.g_y,
curr2.g_w,
curr2.g_h,
TRUE);
buf[0]= tw->cdata[tw->last_cy][tw->last_cx];
buf[1] = '\000';
draw_buf (tw, buf, curr2.g_x, curr2.g_y,
old_flag, 0);
}
}
if (new_curs.g_w && rc_intersect (&new_curs, &curr)) {
if (!off)
off = hide_mouse_if_needed(&curr);
if ((tw->curr_tflags & TCURS_VVIS)
|| !tw->curs_drawn) {
char buf[2] = {
tw->cdata[tw->cy][tw->cx],
'\000'};
set_clipping (vdi_handle, curr.g_x, curr.g_y,
curr.g_w, curr.g_h, TRUE);
draw_buf (tw, buf, curr.g_x, curr.g_y,
new_flag, 0);
} else {
int fillcolor, textcolor, texteffects;
short xy[4] = {
curr.g_x, curr.g_y,
curr.g_x + curr.g_w - 1,
curr.g_y + curr.g_h - 1
};
use_ansi_colors (tw, tw->curr_cattr,
&textcolor,
&fillcolor,
&texteffects);
set_fillcolor (textcolor);
set_fillstyle (1, 1);
set_clipping (vdi_handle, curr.g_x, curr.g_y,
curr.g_w, curr.g_h, FALSE);
v_bar (vdi_handle, xy);
}
}
}
get_window_rect (win, WF_NEXTXYWH, &curr);
}
if (off)
show_mouse();
update_window_unlock();
win->redraw = 0;
tw->last_cx = tw->cx;
tw->last_cy = tw->cy;
}
/*
* mark_clean: mark a window as having been completely updated
*/
void mark_clean(TEXTWIN *t)
{
int line, col;
for (line = 0; line < t->maxy; line++)
{
if (t->dirty[line] == 0)
continue;
for (col = 0; col < NCOLS (t); col++)
t->cflags[line][col] &= ~(CDIRTY);
t->dirty[line] = 0;
}
}
/*
* redraw all parts of window v which are contained within the
* given rectangle. Assumes that the clipping rectange has already
* been set correctly.
* NOTE: more than one rectangle may cover the same area, so we
* can't mark the window clean during the update; we have to do
* it in a separate routine (mark_clean)
*/
static void
update_screen (TEXTWIN *t, short xc, short yc, short wc, short hc,
short force)
{
short firstline, lastline, firstscroll;
short firstcol, lastcol;
short pxy[8];
long scrollht = 0;
if (t->win->flags & WSHADED)
return;
if (t->win->flags & WICONIFIED)
{
draw_winicon(t->win);
return;
}
if (t->windirty)
reread_size (t);
t->windirty = 0;