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Add horizontal scrolling support and refactor mouse click handling in GUI.

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- Introduce horizontal scrolling with column offset synchronization in GUI.
- Refactor mouse click handling for improved accuracy and viewport alignment.
- Enhance tab expansion and cursor rendering logic for better user experience.
- Replace redundant variable declarations in `Buffer` for cleaner code.
This commit is contained in:
Kyle Isom
2025-11-30 17:19:46 -08:00
parent 38ba8c9871
commit fcb2e9a7ed
5 changed files with 189 additions and 83 deletions
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43
Buffer.cc
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@@ -347,8 +347,8 @@ Buffer::insert_text(int row, int col, std::string_view text)
if (static_cast<std::size_t>(row) >= rows_.size())
rows_.emplace_back("");
std::size_t y = static_cast<std::size_t>(row);
std::size_t x = static_cast<std::size_t>(col);
auto y = static_cast<std::size_t>(row);
auto x = static_cast<std::size_t>(col);
if (x > rows_[y].size())
x = rows_[y].size();
@@ -384,13 +384,13 @@ Buffer::delete_text(int row, int col, std::size_t len)
row = 0;
if (static_cast<std::size_t>(row) >= rows_.size())
return;
std::size_t y = static_cast<std::size_t>(row);
std::size_t x = std::min<std::size_t>(static_cast<std::size_t>(col), rows_[y].size());
const auto y = static_cast<std::size_t>(row);
const auto x = std::min<std::size_t>(static_cast<std::size_t>(col), rows_[y].size());
std::size_t remaining = len;
while (remaining > 0 && y < rows_.size()) {
auto &line = rows_[y];
std::size_t in_line = std::min<std::size_t>(remaining, line.size() - std::min(x, line.size()));
auto &line = rows_[y];
const std::size_t in_line = std::min<std::size_t>(remaining, line.size() - std::min(x, line.size()));
if (x < line.size() && in_line > 0) {
line.erase(x, in_line);
remaining -= in_line;
@@ -414,15 +414,18 @@ Buffer::delete_text(int row, int col, std::size_t len)
void
Buffer::split_line(int row, int col)
Buffer::split_line(int row, const int col)
{
if (row < 0)
if (row < 0) {
row = 0;
if (static_cast<std::size_t>(row) >= rows_.size())
}
if (static_cast<std::size_t>(row) >= rows_.size()) {
rows_.resize(static_cast<std::size_t>(row) + 1);
std::size_t y = static_cast<std::size_t>(row);
std::size_t x = std::min<std::size_t>(static_cast<std::size_t>(col), rows_[y].size());
std::string tail = rows_[y].substr(x);
}
const auto y = static_cast<std::size_t>(row);
const auto x = std::min<std::size_t>(static_cast<std::size_t>(col), rows_[y].size());
const auto tail = rows_[y].substr(x);
rows_[y].erase(x);
rows_.insert(rows_.begin() + static_cast<std::ptrdiff_t>(y + 1), tail);
}
@@ -431,24 +434,28 @@ Buffer::split_line(int row, int col)
void
Buffer::join_lines(int row)
{
if (row < 0)
if (row < 0) {
row = 0;
std::size_t y = static_cast<std::size_t>(row);
if (y + 1 >= rows_.size())
}
const auto y = static_cast<std::size_t>(row);
if (y + 1 >= rows_.size()) {
return;
}
rows_[y] += rows_[y + 1];
rows_.erase(rows_.begin() + static_cast<std::ptrdiff_t>(y + 1));
}
void
Buffer::insert_row(int row, std::string_view text)
Buffer::insert_row(int row, const std::string_view text)
{
if (row < 0)
row = 0;
if (static_cast<std::size_t>(row) > rows_.size())
row = static_cast<int>(rows_.size());
rows_.insert(rows_.begin() + static_cast<std::ptrdiff_t>(row), std::string(text));
rows_.insert(rows_.begin() + row, std::string(text));
}
@@ -459,7 +466,7 @@ Buffer::delete_row(int row)
row = 0;
if (static_cast<std::size_t>(row) >= rows_.size())
return;
rows_.erase(rows_.begin() + static_cast<std::ptrdiff_t>(row));
rows_.erase(rows_.begin() + row);
}