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Add UndoSystem implementation and refactor UndoNode for simplicity.

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Kyle Isom
2025-11-30 00:04:29 -08:00
parent e91a32dd90
commit 35ffe6d11c
20 changed files with 13950 additions and 1479 deletions
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16
GUIRenderer.cc
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@@ -82,14 +82,14 @@ GUIRenderer::Draw(Editor &ed)
vis_rows = 1;
long last_row = first_row + vis_rows - 1;
// A) If user scrolled (scroll_y changed), and cursor outside, move cursor to nearest visible row
// Skip this when we just forced a scroll alignment this frame (programmatic change).
if (!forced_scroll && prev_scroll_y >= 0.0f && scroll_y != prev_scroll_y) {
long cyr = static_cast<long>(cy);
if (cyr < first_row || cyr > last_row) {
long new_row = (cyr < first_row) ? first_row : last_row;
if (new_row < 0)
new_row = 0;
// A) If user scrolled (scroll_y changed), and cursor outside, move cursor to nearest visible row
// Skip this when we just forced a scroll alignment this frame (programmatic change).
if (!forced_scroll && prev_scroll_y >= 0.0f && scroll_y != prev_scroll_y) {
long cyr = static_cast<long>(cy);
if (cyr < first_row || cyr > last_row) {
long new_row = (cyr < first_row) ? first_row : last_row;
if (new_row < 0)
new_row = 0;
if (new_row >= static_cast<long>(lines.size()))
new_row = static_cast<long>(lines.empty() ? 0 : (lines.size() - 1));
// Clamp column to line length