static int
readCharacters_ScreenScreen (const ScreenBox *box, ScreenCharacter *buffer) {
ScreenDescription description; /* screen statistics */
describe_ScreenScreen(&description);
if (validateScreenBox(box, description.cols, description.rows)) {
ScreenCharacter *character = buffer;
unsigned char *text = shmAddress + 4 + (box->top * description.cols) + box->left;
unsigned char *attributes = text + (description.cols * description.rows);
size_t increment = description.cols - box->width;
int row;
for (row=0; row<box->height; row++) {
int column;
for (column=0; column<box->width; column++) {
wint_t wc = convertCharToWchar(*text++);
if (wc == WEOF) wc = L'?';
character->text = wc;
character->attributes = *attributes++;
character++;
}
text += increment;
attributes += increment;
}
return 1;
}
return 0;
}
static int
readCharacters_AtSpiScreen (const ScreenBox *box, ScreenCharacter *buffer) {
long x,y;
clearScreenCharacters(buffer,box->height*box->width);
pthread_mutex_lock(&updateMutex);
if (!curTerm) {
setScreenMessage(box, buffer, nonatspi);
goto out;
}
if (!curNumRows) {
goto out;
}
if (!validateScreenBox(box, curNumCols, curNumRows)) {
goto out;
}
for (y=0; y<box->height; y++) {
if (curRowLengths[box->top+y]) {
for (x=0; x<box->width; x++) {
if (box->left+x<curRowLengths[box->top+y] - (curRows[box->top+y][curRowLengths[box->top+y]-1]=='\n')) {
buffer[y*box->width+x].text = curRows[box->top+y][box->left+x];
}
}
}
}
out:
pthread_mutex_unlock(&updateMutex);
return 1;
}
static int
readCharacters_HelpScreen (const ScreenBox *box, ScreenCharacter *buffer) {
const HelpPageEntry *page = getPage();
if (page) {
if (validateScreenBox(box, page->lineLength, page->lineCount)) {
ScreenCharacter *character = buffer;
int row;
for (row=0; row<box->height; row+=1) {
const HelpLineEntry *line = &page->lineTable[box->top + row];
int column;
for (column=0; column<box->width; column+=1) {
int index = box->left + column;
if (index < line->length) {
character->text = line->characters[index];
} else {
character->text = WC_C(' ');
}
character->attributes = SCR_COLOUR_DEFAULT;
character += 1;
}
}
return 1;
}
}
return 0;
}
static int
readCharacters_NoScreen (const ScreenBox *box, ScreenCharacter *buffer) {
ScreenDescription description;
describe_NoScreen(&description);
if (!validateScreenBox(box, description.cols, description.rows)) return 0;
setScreenMessage(box, buffer, screenMessage);
return 1;
}
static int
readCharacters_FrozenScreen (const ScreenBox *box, ScreenCharacter *buffer) {
if (validateScreenBox(box, screenDescription.cols, screenDescription.rows)) {
int row;
for (row=0; row<box->height; row++) {
memcpy(&buffer[row * box->width],
&screenCharacters[((box->top + row) * screenDescription.cols) + box->left],
box->width * sizeof(*screenCharacters));
}
return 1;
}
return 0;
}
static int
readCharacters_PcBiosScreen (const ScreenBox *box, ScreenCharacter *buffer) {
unsigned offset = ScreenPrimary;
ScreenDescription description;
int row, col;
describe_PcBiosScreen(&description);
if (!validateScreenBox(box, description.cols, description.rows)) return 0;
_farsetsel(_go32_conventional_mem_selector());
for (row=box->top; row<box->top+box->height; ++row)
for (col=box->left; col<box->left+box->width; ++col) {
buffer->text = _farnspeekb(offset + row*description.cols*2 + col*2);
buffer->attributes = _farnspeekb(offset + row*description.cols*2 + col*2 + 1);
buffer++;
}
return 1;
}
