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Add line numbers

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This commit is contained in:
Zachary Yedidia 2016-03-12 17:34:52 -05:00
parent e3d629f2b5
commit 8ab8fd4373
1 changed files with 21 additions and 8 deletions
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29
src/view.d
View file

@ -9,6 +9,7 @@ import std.utf: count;
class View {
uint topline;
uint xOffset;
uint width;
uint height;
@ -113,7 +114,7 @@ class View {
} else if (e.key == Key.arrowLeft) {
cursorLeft();
} else if (e.key == Key.mouseLeft) {
cursor.x = e.x;
cursor.x = e.x - xOffset;
cursor.y = e.y + topline;
if (cursor.y - topline > height-1) {
cursor.y = height + topline-1;
@ -164,7 +165,7 @@ class View {
}
}
void display(bool drawCursor = true) {
void display() {
uint x, y;
string[] lines;
@ -174,7 +175,21 @@ class View {
lines = buf.lines[topline .. topline + height];
}
ulong maxLength = to!string(buf.lines.length).length;
xOffset = cast(int) maxLength + 1;
foreach (i, line; lines) {
// Write the line number
string lineNum = to!string(i + topline + 1);
foreach (_; 0 .. maxLength - lineNum.length) {
setCell(cast(int) x++, cast(int) y, ' ', Color.basic, Color.black);
}
foreach (dchar ch; lineNum) {
setCell(cast(int) x++, cast(int) y, ch, Color.basic, Color.black);
}
setCell(cast(int) x++, cast(int) y, ' ', Color.basic | Attribute.bold, Color.black);
// Write the line
foreach (dchar ch; line) {
setCell(x++, y, ch, Color.basic, Color.basic);
}
@ -182,12 +197,10 @@ class View {
x = 0;
}
if (drawCursor) {
if (cursor.y - topline < 0 || cursor.y - topline > height-1) {
hideCursor();
} else {
setCursor(cursor.x, cursor.y - topline);
}
if (cursor.y - topline < 0 || cursor.y - topline > height-1) {
hideCursor();
} else {
setCursor(cursor.x + xOffset, cursor.y - topline);
}
sl.display();