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git-svn-id: svn://qnap.local/TwoTerm/trunk@3171 5590a31f-7b70-45f8-8c82-aa3a8e5f4507
This commit is contained in:
Kelvin Sherlock 2017-02-18 18:00:18 +00:00
parent 93b24a5a4b
commit 6ab42a4c82
2 changed files with 88 additions and 27 deletions
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109
cpp/Screen.cpp
View File

@ -198,7 +198,7 @@ void Screen::scrollUp(iRect rect)
void Screen::scrollDown()
{
// save the first line (to avoid allocation/deallocation)
// save the last line (to avoid allocation/deallocation)
std::vector<char_info> tmp;
std::swap(tmp, _screen.back());
std::fill(tmp.begin(), tmp.end(), char_info());
@ -238,43 +238,98 @@ void Screen::scrollDown(iRect rect)
_updates.push_back(iPoint(rect.maxX()-1, rect.maxY()-1));
}
void Screen::scrollLeft(int n) {
#if 0
void Screen::scrollDown(iRect rect)
{
if (n <= 0) return;
if (n >= _frame.width()) return eraseScreen();
rect = rect.intersection(_frame);
if (!rect.valid()) return;
if (rect == _frame) return scrollDown();
auto src = _screen.begin() + rect.maxY()-1;
auto dest = _screen.begin() + rect.maxY();
auto end = _screen.begin() + rect.minY();
while (src != end) {
--src;
--dest;
std::copy(src->begin() + rect.minX(), src->begin() + rect.maxX(), dest->begin() + rect.minX());
for (auto &line : _screen) {
auto iter = std::copy(line.begin() + n, line.end(), line.begin());
while (n--) *iter++ = char_info();
}
_updates.push_back(iPoint(0,0));
_updates.push_back(iPoint(width() - 1, height() - 1));
}
void Screen::scrollLeft(iRect rect, int n) {
auto &line = _screen[rect.minY()];
std::fill(line.begin() + rect.minX(), line.begin() + rect.maxX(), char_info());
if (n <= 0) return;
rect = rect.intersection(_frame);
if (!rect.valid()) return;
if (rect == _frame) return scrollLeft(n);
if (n >= rect.width()) return eraseRect(rect);
auto yIter = _screen.begin() + rect.minY();
auto yEnd = _screen.begin() + rect.maxY();
for( ; yIter != yEnd; ++yIter) {
auto &line = *yIter;
auto xIter = line.begin() + rect.minX();
auto xEnd = line.begin() + rect.maxX();
auto iter = std::copy(xIter + n, xEnd, xIter);
while (n--) *iter++ = char_info();
}
_updates.push_back(rect.origin);
_updates.push_back(iPoint(rect.maxX()-1, rect.maxY()-1));
}
#endif
void Screen::scrollRight(int n) {
if (n <= 0) return;
if (n >= _frame.width()) return eraseScreen();
for (auto &line : _screen) {
auto iter = std::copy_backward(line.begin(), line.end()-n, line.end());
while (n--) { --iter; *iter = char_info(); }
}
_updates.push_back(iPoint(0,0));
_updates.push_back(iPoint(width() - 1, height() - 1));
}
void Screen::scrollRight(iRect rect, int n) {
if (n <= 0) return;
rect = rect.intersection(_frame);
if (!rect.valid()) return;
if (rect == _frame) return scrollRight(n);
if (n >= rect.width()) return eraseRect(rect);
auto yIter = _screen.begin() + rect.minY();
auto yEnd = _screen.begin() + rect.maxY();
for( ; yIter != yEnd; ++yIter) {
auto &line = *yIter;
auto xIter = line.begin() + rect.minX();
auto xEnd = line.begin() + rect.maxX();
auto iter = std::copy(xIter, xEnd-n, xEnd);
while (n--) { --iter; *iter = char_info(); }
}
_updates.push_back(rect.origin);
_updates.push_back(iPoint(rect.maxX()-1, rect.maxY()-1));
}

6
cpp/Screen.h
View File

@ -112,6 +112,12 @@ public:
void scrollDown(iRect window);
void scrollLeft(int n = 1);
void scrollLeft(iRect window, int n = 1);
void scrollRight(int n = 1);
void scrollRight(iRect window, int n = 1);
void deleteLine(unsigned line);
void insertLine(unsigned line);