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Added use of shift+arrow keys to expand current selection

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Qwerasd
2024-01-11 20:58:12 -05:00
parent 28ead2fd30
commit e0867801a5
1 changed files with 80 additions and 0 deletions
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80
src/Surface.zig
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@ -1264,6 +1264,86 @@ pub fn keyCallback(
}
}
// Expand selection if one exists and event is shift + <arrows, home, end, pg up/down>
if (event.mods.shift) adjust_selection: {
self.renderer_state.mutex.lock();
defer self.renderer_state.mutex.unlock();
var screen = self.io.terminal.screen;
const selection = screen.selection;
if (selection == null) break :adjust_selection;
// Silently consume key releases.
if (event.action != .press and event.action != .repeat) return .consumed;
var sel = selection.?;
const viewport_end = screen.viewport + terminal.Screen.RowIndexTag.viewport.maxLen(&screen) - 1;
const screen_end = terminal.Screen.RowIndexTag.screen.maxLen(&screen) - 1;
switch (event.physical_key) {
.left => {
var iterator = sel.end.iterator(&screen, .left_up);
// This iterator emits the start point first, throw it out.
_ = iterator.next();
var next = iterator.next();
// Step left, wrapping to the next row up at the start of each new line,
// until we find a non-empty cell.
while (
next != null and
screen.getCell(.screen, next.?.y, next.?.x).char == 0
) {
next = iterator.next();
}
if (next != null) {
sel.end = next.?;
}
},
.right => {
var iterator = sel.end.iterator(&screen, .right_down);
// This iterator emits the start point first, throw it out.
_ = iterator.next();
var next = iterator.next();
// Step right, wrapping to the next row down at the start of each new line,
// until we find a non-empty cell.
while (
next != null and
next.?.y <= screen_end and
screen.getCell(.screen, next.?.y, next.?.x).char == 0
) {
next = iterator.next();
}
if (next != null) {
if (next.?.y > screen_end) {
sel.end.y = screen_end;
} else {
sel.end = next.?;
}
}
},
.up => {
if (sel.end.y > 0) sel.end.y -= 1;
},
.down => {
if (sel.end.y < screen_end) sel.end.y += 1;
},
else => { break :adjust_selection; },
}
// If the selection endpoint is outside of the current viewpoint, scroll it in to view.
if (sel.end.y < screen.viewport) {
try self.io.terminal.scrollViewport(.{
.delta = @as(isize, @intCast(sel.end.y)) - @as(isize, @intCast(screen.viewport))
});
} else if (sel.end.y > viewport_end) {
try self.io.terminal.scrollViewport(.{
.delta = @as(isize, @intCast(sel.end.y)) - @as(isize, @intCast(viewport_end))
});
}
self.setSelection(sel);
try self.queueRender();
return .consumed;
}
// If we allow KAM and KAM is enabled then we do nothing.
if (self.config.vt_kam_allowed) {
self.renderer_state.mutex.lock();