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Refactor movement code

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Krzosa Karol
2024-07-20 09:20:25 +02:00
parent ba4ed9afff
commit 3868afce93
1 changed files with 27 additions and 20 deletions
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47
src/text_editor/view.cpp
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@@ -95,20 +95,33 @@ Int MoveOnWhitespaceBoundaryUp(Buffer &buffer, Int pos) {
return result;
}
Int MovePos(Buffer &buffer, Int pos, XY offset, bool ctrl_pressed) {
Int result = pos;
if (ctrl_pressed) {
if (offset.col == 1 && offset.line == 0) return MoveOnWhitespaceBoundaryForward(buffer, pos);
if (offset.col == -1 && offset.line == 0) return MoveOnWhitespaceBoundaryBackward(buffer, pos);
if (offset.col == 0 && offset.line == 1) return MoveOnWhitespaceBoundaryDown(buffer, pos);
if (offset.col == 0 && offset.line == -1) return MoveOnWhitespaceBoundaryUp(buffer, pos);
} else {
XY xy = PosToXY(buffer, pos);
result = XYToPos(buffer, {xy.col + offset.col, xy.line + offset.line});
}
Int MovePosByXY(Buffer &buffer, Int pos, XY offset) {
XY xy = PosToXY(buffer, pos);
Int result = XYToPos(buffer, {xy.col + offset.col, xy.line + offset.line});
return result;
}
Int MoveCursor(Buffer &buffer, Int pos, int direction, bool ctrl_pressed) {
Assert(direction >= 0 && direction <= 3);
if (ctrl_pressed) {
switch (direction) {
case 0: return MoveOnWhitespaceBoundaryForward(buffer, pos);
case 1: return MoveOnWhitespaceBoundaryBackward(buffer, pos);
case 2: return MoveOnWhitespaceBoundaryDown(buffer, pos);
case 3: return MoveOnWhitespaceBoundaryUp(buffer, pos);
default: return pos;
}
} else {
XY offsets[4] = {
{ 1, 0},
{-1, 0},
{ 0, 1},
{ 0, -1},
};
return MovePosByXY(buffer, pos, offsets[direction]);
}
}
void HandleKeybindings(View *_view) {
View &view = *_view;
Buffer &buf = *view.buffer;
@@ -119,22 +132,16 @@ void HandleKeybindings(View *_view) {
view.scroll.y -= GetMouseWheelMove() * 48;
}
int keys[4] = {KEY_RIGHT, KEY_LEFT, KEY_DOWN, KEY_UP};
XY keys_offset[4] = {
{ 1, 0},
{-1, 0},
{ 0, 1},
{ 0, -1}
};
int keys[4] = {KEY_RIGHT, KEY_LEFT, KEY_DOWN, KEY_UP};
for (int i = 0; i < 4; i += 1) {
if (IsKeyPressed(keys[i]) || IsKeyPressedRepeat(keys[i])) {
For(view.cursors) {
if (IsKeyDown(KEY_LEFT_SHIFT)) {
Int front = GetFront(it);
Int new_front = MovePos(buf, front, keys_offset[i], IsKeyDown(KEY_LEFT_CONTROL));
Int new_front = MoveCursor(buf, front, i, IsKeyDown(KEY_LEFT_CONTROL));
it = ChangeFront(it, new_front);
} else {
it.range.max = it.range.min = MovePos(buf, it.range.max, keys_offset[i], IsKeyDown(KEY_LEFT_CONTROL));
it.range.max = it.range.min = MoveCursor(buf, it.range.max, i, IsKeyDown(KEY_LEFT_CONTROL));
}
}
}