1 files changed, 23 insertions(+), 10 deletions(-)

M cmd/most/main.ha

@@ 85,9 85,12 @@ fn run(conf: *config, in: io::handle) (void | vt::error) = {
 	};
 	vt::disablecur(term)?;
 
+	const (rows, cols) = vt::getsize(term)?;
 	let state = state {
 		term = term,
 		conf = conf,
+		rows = rows,
+		cols = cols,
 		info = vt::newpen(void, void, vt::style::INVERT),
 		ellipsis = vt::newpen(vt::color::BLACK, vt::color::WHITE),
 		binary = vt::newpen(


@@ 98,7 101,7 @@ fn run(conf: *config, in: io::handle) (void | vt::error) = {
 		in = in,
 		...
 	};
-	drawlines(&state)?;
+	drawlines(&state, state.rows - 1)?;
 	if (state.eof && state.conf.onescreen && state.lines[0] == 0) {
 		return;
 	};


@@ 130,6 133,16 @@ fn run(conf: *config, in: io::handle) (void | vt::error) = {
 				action_top(&state)?;
 			case 'G' =>
 				action_bottom(&state)?;
+			case 'd' =>
+				if (ev.mods == modflag::CTRL) {
+					clearstatus(&state)?;
+					drawlines(&state, (state.rows - 1) / 2)?;
+				};
+			case 'u' =>
+				if (ev.mods == modflag::CTRL) {
+					scrollup(&state, (state.rows - 1) / 2)?;
+					clearstatus(&state)?;
+				};
 			case =>
 				yield;
 			};


@@ 150,12 163,12 @@ fn run(conf: *config, in: io::handle) (void | vt::error) = {
 	};
 };
 
-fn drawlines(state: *state) (void | vt::error) = {
-	const (rows, cols) = vt::getsize(state.term)?;
-	state.rows = rows;
-	state.cols = cols;
-
-	for (let i = 0u; i < rows - 1 && !state.eof; i += 1) {
+fn drawlines(state: *state, nlines: uint) (void | vt::error) = {
+	let max = state.rows - 1;
+	if (max > nlines) {
+		max = nlines;
+	};
+	for (let i = 0u; i < max && !state.eof; i += 1) {
 		drawline(state)?;
 	};
 


@@ 246,7 259,7 @@ fn scrollup(state: *state, lines: uint) (void | vt::error) = {
 	state.eof = false;
 	delete(state.lines[lineno..]);
 	vt::clear(state.term)?;
-	drawlines(state)?;
+	drawlines(state, state.rows - 1)?;
 };
 
 fn action_down(state: *state) (void | vt::error) = {


@@ 261,7 274,7 @@ fn action_up(state: *state) (void | vt::error) = {
 
 fn action_pgdown(state: *state) (void | vt::error) = {
 	clearstatus(state)?;
-	drawlines(state)?;
+	drawlines(state, state.rows - 1)?;
 };
 
 fn action_pgup(state: *state) (void | vt::error) = {


@@ 273,7 286,7 @@ fn action_top(state: *state) (void | vt::error) = {
 	state.eof = false;
 	delete(state.lines[..]);
 	vt::clear(state.term)?;
-	drawlines(state)?;
+	drawlines(state, state.rows - 1)?;
 };
 
 fn action_bottom(state: *state) (void | vt::error) = {