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Merge pull request #2115 from ghostty-org/index
Index should create scrollback anytime top scroll region is top line
This commit is contained in:
Mitchell Hashimoto
@ -5,6 +5,7 @@ const Allocator = std.mem.Allocator;
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const assert = std.debug.assert;
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const ansi = @import("ansi.zig");
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const charsets = @import("charsets.zig");
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const fastmem = @import("../fastmem.zig");
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const kitty = @import("kitty.zig");
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const sgr = @import("sgr.zig");
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const unicode = @import("../unicode/main.zig");
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@ -741,6 +742,143 @@ pub fn cursorDownScroll(self: *Screen) !void {
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}
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}
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/// This scrolls the active area at and above the cursor. The lines below
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/// the cursor are not scrolled.
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pub fn cursorScrollAbove(self: *Screen) !void {
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// If the cursor is on the bottom of the screen, its faster to use
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// our specialized function for that case.
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if (self.cursor.y == self.pages.rows - 1) {
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return try self.cursorDownScroll();
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}
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defer self.assertIntegrity();
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// Logic below assumes we always have at least one row that isn't moving
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assert(self.cursor.y < self.pages.rows - 1);
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const old_pin = self.cursor.page_pin.*;
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if (try self.pages.grow()) |_| {
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try self.cursorScrollAboveRotate();
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} else {
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// In this case, it means grow() didn't allocate a new page.
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if (self.cursor.page_pin.page == self.pages.pages.last) {
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// If we're on the last page we can do a very fast path because
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// all the rows we need to move around are within a single page.
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assert(old_pin.page == self.cursor.page_pin.page);
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self.cursor.page_pin.* = self.cursor.page_pin.down(1).?;
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const pin = self.cursor.page_pin;
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const page = &self.cursor.page_pin.page.data;
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// Rotate the rows so that the newly created empty row is at the
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// beginning. e.g. [ 0 1 2 3 ] in to [ 3 0 1 2 ].
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var rows = page.rows.ptr(page.memory.ptr);
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fastmem.rotateOnceR(Row, rows[pin.y..page.size.rows]);
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// Mark all our rotated rows as dirty.
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var dirty = page.dirtyBitSet();
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dirty.setRangeValue(.{ .start = pin.y, .end = page.size.rows }, true);
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// Setup our cursor caches after the rotation so it points to the
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// correct data
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const page_rac = self.cursor.page_pin.rowAndCell();
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self.cursor.page_row = page_rac.row;
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self.cursor.page_cell = page_rac.cell;
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// Note: we don't need to call cursorChangePin here because
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// the pin page is the same so there is no accounting to do for
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// styles or any of that.
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} else {
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// We didn't grow pages but our cursor isn't on the last page.
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// In this case we need to do more work because we need to copy
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// elements between pages.
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//
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// An example scenario of this is shown below:
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//
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// +----------+ = PAGE 0
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// ... : :
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// +-------------+ ACTIVE
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// 4302 |1A00000000| | 0
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// 4303 |2B00000000| | 1
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// :^ : : = PIN 0
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// 4304 |3C00000000| | 2
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// +----------+ :
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// +----------+ : = PAGE 1
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// 0 |4D00000000| | 3
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// 1 |5E00000000| | 4
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// +----------+ :
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// +-------------+
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try self.cursorScrollAboveRotate();
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}
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}
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if (self.cursor.style_id != style.default_id) {
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// The newly created line needs to be styled according to
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// the bg color if it is set.
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if (self.cursor.style.bgCell()) |blank_cell| {
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const cell_current: [*]pagepkg.Cell = @ptrCast(self.cursor.page_cell);
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const cells = cell_current - self.cursor.x;
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@memset(cells[0..self.pages.cols], blank_cell);
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}
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}
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}
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fn cursorScrollAboveRotate(self: *Screen) !void {
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self.cursor.page_pin.* = self.cursor.page_pin.down(1).?;
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// Go through each of the pages following our pin, shift all rows
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// down by one, and copy the last row of the previous page.
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var current = self.pages.pages.last.?;
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while (current != self.cursor.page_pin.page) : (current = current.prev.?) {
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const prev = current.prev.?;
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const prev_page = &prev.data;
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const cur_page = ¤t.data;
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const prev_rows = prev_page.rows.ptr(prev_page.memory.ptr);
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const cur_rows = cur_page.rows.ptr(cur_page.memory.ptr);
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// Rotate the pages down: [ 0 1 2 3 ] => [ 3 0 1 2 ]
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fastmem.rotateOnceR(Row, cur_rows[0..cur_page.size.rows]);
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// Copy the last row of the previous page to the top of current.
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try cur_page.cloneRowFrom(
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prev_page,
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&cur_rows[0],
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&prev_rows[prev_page.size.rows - 1],
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);
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// All rows we rotated are dirty
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var dirty = cur_page.dirtyBitSet();
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dirty.setRangeValue(.{ .start = 0, .end = cur_page.size.rows }, true);
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}
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// Our current is our cursor page, we need to rotate down from
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// our cursor and clear our row.
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assert(current == self.cursor.page_pin.page);
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const cur_page = ¤t.data;
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const cur_rows = cur_page.rows.ptr(cur_page.memory.ptr);
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fastmem.rotateOnceR(Row, cur_rows[self.cursor.page_pin.y..cur_page.size.rows]);
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self.clearCells(
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cur_page,
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&cur_rows[0],
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cur_page.getCells(&cur_rows[0]),
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);
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// Set all the rows we rotated and cleared dirty
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var dirty = cur_page.dirtyBitSet();
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dirty.setRangeValue(
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.{ .start = self.cursor.page_pin.y, .end = cur_page.size.rows },
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true,
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);
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// Setup cursor cache data after all the rotations so our
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// row is valid.
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const page_rac = self.cursor.page_pin.rowAndCell();
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self.cursor.page_row = page_rac.row;
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self.cursor.page_cell = page_rac.cell;
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}
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/// Move the cursor down if we're not at the bottom of the screen. Otherwise
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/// scroll. Currently only used for testing.
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fn cursorDownOrScroll(self: *Screen) !void {
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@ -3817,6 +3955,255 @@ test "Screen: scroll and clear ignore blank lines" {
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}
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}
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test "Screen: scroll above same page" {
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const testing = std.testing;
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const alloc = testing.allocator;
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var s = try init(alloc, 10, 3, 10);
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defer s.deinit();
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try s.setAttribute(.{ .direct_color_bg = .{ .r = 155 } });
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try s.testWriteString("1ABCD\n2EFGH\n3IJKL");
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s.cursorAbsolute(0, 1);
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s.pages.clearDirty();
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try s.cursorScrollAbove();
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{
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const contents = try s.dumpStringAlloc(alloc, .{ .viewport = .{} });
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defer alloc.free(contents);
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try testing.expectEqualStrings("2EFGH\n\n3IJKL", contents);
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}
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{
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const list_cell = s.pages.getCell(.{ .active = .{ .x = 0, .y = 1 } }).?;
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const cell = list_cell.cell;
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try testing.expect(cell.content_tag == .bg_color_rgb);
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try testing.expectEqual(Cell.RGB{
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.r = 155,
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.g = 0,
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.b = 0,
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}, cell.content.color_rgb);
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}
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// Only y=1,2 are dirty because they are the ones that CHANGED contents
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// (not just scroll).
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try testing.expect(!s.pages.isDirty(.{ .active = .{ .x = 0, .y = 0 } }));
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try testing.expect(s.pages.isDirty(.{ .active = .{ .x = 0, .y = 1 } }));
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try testing.expect(s.pages.isDirty(.{ .active = .{ .x = 0, .y = 2 } }));
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}
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test "Screen: scroll above same page but cursor on previous page" {
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const testing = std.testing;
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const alloc = testing.allocator;
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var s = try init(alloc, 10, 5, 10);
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defer s.deinit();
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// We need to get the cursor to a new page
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const first_page_size = s.pages.pages.first.?.data.capacity.rows;
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for (0..first_page_size - 3) |_| try s.testWriteString("\n");
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try s.setAttribute(.{ .direct_color_bg = .{ .r = 155 } });
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try s.testWriteString("1A\n2B\n3C\n4D\n5E");
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s.cursorAbsolute(0, 1);
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s.pages.clearDirty();
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// Ensure we're still on the first page and have a second
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try testing.expect(s.cursor.page_pin.page == s.pages.pages.first.?);
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try testing.expect(s.pages.pages.first.?.next != null);
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// At this point:
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// +----------+ = PAGE 0
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// ... : :
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// +-------------+ ACTIVE
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// 4303 |1A00000000| | 0
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// 4304 |2B00000000| | 1
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// :^ : : = PIN 0
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// +----------+ :
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// +----------+ : = PAGE 1
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// 0 |3C00000000| | 2
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// 1 |4D00000000| | 3
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// 2 |5E00000000| | 4
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// +----------+ :
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// +-------------+
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try s.cursorScrollAbove();
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{
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const contents = try s.dumpStringAlloc(alloc, .{ .viewport = .{} });
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defer alloc.free(contents);
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try testing.expectEqualStrings("2B\n\n3C\n4D\n5E", contents);
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}
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{
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const list_cell = s.pages.getCell(.{ .active = .{ .x = 0, .y = 1 } }).?;
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const cell = list_cell.cell;
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try testing.expect(cell.content_tag == .bg_color_rgb);
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try testing.expectEqual(Cell.RGB{
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.r = 155,
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.g = 0,
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.b = 0,
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}, cell.content.color_rgb);
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}
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try testing.expect(!s.pages.isDirty(.{ .active = .{ .x = 0, .y = 0 } }));
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try testing.expect(s.pages.isDirty(.{ .active = .{ .x = 0, .y = 1 } }));
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try testing.expect(s.pages.isDirty(.{ .active = .{ .x = 0, .y = 2 } }));
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}
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test "Screen: scroll above same page but cursor on previous page last row" {
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const testing = std.testing;
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const alloc = testing.allocator;
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var s = try init(alloc, 10, 5, 10);
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defer s.deinit();
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// We need to get the cursor to a new page
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const first_page_size = s.pages.pages.first.?.data.capacity.rows;
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for (0..first_page_size - 2) |_| try s.testWriteString("\n");
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try s.setAttribute(.{ .direct_color_bg = .{ .r = 155 } });
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try s.testWriteString("1A\n2B\n3C\n4D\n5E");
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s.cursorAbsolute(0, 1);
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s.pages.clearDirty();
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// Ensure we're still on the first page and have a second
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try testing.expect(s.cursor.page_pin.page == s.pages.pages.first.?);
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try testing.expect(s.pages.pages.first.?.next != null);
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// At this point:
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// +----------+ = PAGE 0
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// ... : :
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// +-------------+ ACTIVE
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// 4303 |1A00000000| | 0
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// 4304 |2B00000000| | 1
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// :^ : : = PIN 0
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// +----------+ :
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// +----------+ : = PAGE 1
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// 0 |3C00000000| | 2
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// 1 |4D00000000| | 3
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// 2 |5E00000000| | 4
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// +----------+ :
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// +-------------+
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try s.cursorScrollAbove();
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// +----------+ = PAGE 0
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// ... : :
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// 4303 |1A00000000|
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// +-------------+ ACTIVE
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// 4304 |2B00000000| | 0
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// +----------+ :
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// +----------+ : = PAGE 1
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// 0 | | | 1
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// :^ : : = PIN 0
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// 1 |3C00000000| | 2
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// 2 |4D00000000| | 3
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// 3 |5E00000000| | 4
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// +----------+ :
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// +-------------+
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// try s.pages.diagram(std.io.getStdErr().writer());
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{
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const contents = try s.dumpStringAlloc(alloc, .{ .viewport = .{} });
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defer alloc.free(contents);
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try testing.expectEqualStrings("2B\n\n3C\n4D\n5E", contents);
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}
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{
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const list_cell = s.pages.getCell(.{ .active = .{ .x = 0, .y = 1 } }).?;
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const cell = list_cell.cell;
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try testing.expect(cell.content_tag == .bg_color_rgb);
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try testing.expectEqual(Cell.RGB{
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.r = 155,
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.g = 0,
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.b = 0,
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}, cell.content.color_rgb);
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}
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try testing.expect(!s.pages.isDirty(.{ .active = .{ .x = 0, .y = 0 } }));
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try testing.expect(s.pages.isDirty(.{ .active = .{ .x = 0, .y = 1 } }));
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try testing.expect(s.pages.isDirty(.{ .active = .{ .x = 0, .y = 2 } }));
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}
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test "Screen: scroll above creates new page" {
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const testing = std.testing;
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const alloc = testing.allocator;
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var s = try init(alloc, 10, 3, 10);
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defer s.deinit();
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// We need to get the cursor to a new page
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const first_page_size = s.pages.pages.first.?.data.capacity.rows;
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for (0..first_page_size - 3) |_| try s.testWriteString("\n");
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try s.setAttribute(.{ .direct_color_bg = .{ .r = 155 } });
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try s.testWriteString("1ABCD\n2EFGH\n3IJKL");
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s.cursorAbsolute(0, 1);
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s.pages.clearDirty();
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// Ensure we're still on the first page
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try testing.expect(s.cursor.page_pin.page == s.pages.pages.first.?);
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try s.cursorScrollAbove();
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{
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const contents = try s.dumpStringAlloc(alloc, .{ .viewport = .{} });
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defer alloc.free(contents);
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try testing.expectEqualStrings("2EFGH\n\n3IJKL", contents);
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}
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{
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const list_cell = s.pages.getCell(.{ .active = .{ .x = 0, .y = 1 } }).?;
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const cell = list_cell.cell;
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try testing.expect(cell.content_tag == .bg_color_rgb);
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try testing.expectEqual(Cell.RGB{
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.r = 155,
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.g = 0,
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.b = 0,
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}, cell.content.color_rgb);
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}
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// Only y=1 is dirty because they are the ones that CHANGED contents
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try testing.expect(!s.pages.isDirty(.{ .active = .{ .x = 0, .y = 0 } }));
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try testing.expect(s.pages.isDirty(.{ .active = .{ .x = 0, .y = 1 } }));
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try testing.expect(s.pages.isDirty(.{ .active = .{ .x = 0, .y = 2 } }));
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}
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test "Screen: scroll above no scrollback bottom of page" {
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const testing = std.testing;
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const alloc = testing.allocator;
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var s = try init(alloc, 10, 3, 0);
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defer s.deinit();
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const first_page_size = s.pages.pages.first.?.data.capacity.rows;
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for (0..first_page_size - 3) |_| try s.testWriteString("\n");
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try s.setAttribute(.{ .direct_color_bg = .{ .r = 155 } });
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try s.testWriteString("1ABCD\n2EFGH\n3IJKL");
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s.cursorAbsolute(0, 1);
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s.pages.clearDirty();
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try s.cursorScrollAbove();
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{
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const contents = try s.dumpStringAlloc(alloc, .{ .viewport = .{} });
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defer alloc.free(contents);
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try testing.expectEqualStrings("2EFGH\n\n3IJKL", contents);
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}
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{
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const list_cell = s.pages.getCell(.{ .active = .{ .x = 0, .y = 1 } }).?;
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const cell = list_cell.cell;
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try testing.expect(cell.content_tag == .bg_color_rgb);
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try testing.expectEqual(Cell.RGB{
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.r = 155,
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.g = 0,
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.b = 0,
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}, cell.content.color_rgb);
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}
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// Only y=1,2 are dirty because they are the ones that CHANGED contents
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// (not just scroll).
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try testing.expect(!s.pages.isDirty(.{ .active = .{ .x = 0, .y = 0 } }));
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try testing.expect(s.pages.isDirty(.{ .active = .{ .x = 0, .y = 1 } }));
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try testing.expect(s.pages.isDirty(.{ .active = .{ .x = 0, .y = 2 } }));
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}
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test "Screen: clone" {
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const testing = std.testing;
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const alloc = testing.allocator;
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@ -1109,15 +1109,15 @@ pub fn index(self: *Terminal) !void {
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// Scrolling dirties the images because it updates their placements pins.
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self.screen.kitty_images.dirty = true;
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// If our scrolling region is the full screen, we create scrollback.
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// Otherwise, we simply scroll the region.
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// If our scrolling region is at the top, we create scrollback.
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if (self.scrolling_region.top == 0 and
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self.scrolling_region.bottom == self.rows - 1 and
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self.scrolling_region.left == 0 and
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self.scrolling_region.right == self.cols - 1)
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{
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try self.screen.cursorDownScroll();
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} else {
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try self.screen.cursorScrollAbove();
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return;
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}
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||||
// Slow path for left and right scrolling region margins.
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||||
if (self.scrolling_region.left != 0 or
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||||
self.scrolling_region.right != self.cols - 1 or
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||||
@ -1164,7 +1164,6 @@ pub fn index(self: *Terminal) !void {
|
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self.screen.cursor.style = .{};
|
||||
self.screen.manualStyleUpdate() catch unreachable;
|
||||
};
|
||||
}
|
||||
|
||||
return;
|
||||
}
|
||||
@ -6438,10 +6437,11 @@ test "Terminal: index bottom of scroll region with hyperlinks" {
|
||||
|
||||
test "Terminal: index bottom of scroll region clear hyperlinks" {
|
||||
const alloc = testing.allocator;
|
||||
var t = try init(alloc, .{ .rows = 5, .cols = 5 });
|
||||
var t = try init(alloc, .{ .rows = 5, .cols = 5, .max_scrollback = 0 });
|
||||
defer t.deinit(alloc);
|
||||
|
||||
t.setTopAndBottomMargin(1, 2);
|
||||
t.setTopAndBottomMargin(2, 3);
|
||||
t.setCursorPos(2, 1);
|
||||
try t.screen.startHyperlink("http://example.com", null);
|
||||
try t.print('A');
|
||||
t.screen.endHyperlink();
|
||||
@ -6455,10 +6455,10 @@ test "Terminal: index bottom of scroll region clear hyperlinks" {
|
||||
{
|
||||
const str = try t.plainString(testing.allocator);
|
||||
defer testing.allocator.free(str);
|
||||
try testing.expectEqualStrings("B\nC", str);
|
||||
try testing.expectEqualStrings("\nB\nC", str);
|
||||
}
|
||||
|
||||
for (0..2) |y| {
|
||||
for (1..3) |y| {
|
||||
const list_cell = t.screen.pages.getCell(.{ .viewport = .{
|
||||
.x = 0,
|
||||
.y = @intCast(y),
|
||||
@ -6597,11 +6597,36 @@ test "Terminal: index inside left/right margin" {
|
||||
}
|
||||
}
|
||||
|
||||
test "Terminal: index bottom of scroll region" {
|
||||
test "Terminal: index bottom of scroll region creates scrollback" {
|
||||
const alloc = testing.allocator;
|
||||
var t = try init(alloc, .{ .rows = 5, .cols = 5 });
|
||||
defer t.deinit(alloc);
|
||||
|
||||
t.setTopAndBottomMargin(1, 3);
|
||||
try t.printString("1\n2\n3");
|
||||
t.setCursorPos(4, 1);
|
||||
try t.print('X');
|
||||
t.setCursorPos(3, 1);
|
||||
try t.index();
|
||||
try t.print('Y');
|
||||
|
||||
{
|
||||
const str = try t.screen.dumpStringAlloc(alloc, .{ .viewport = .{} });
|
||||
defer testing.allocator.free(str);
|
||||
try testing.expectEqualStrings("2\n3\nY\nX", str);
|
||||
}
|
||||
{
|
||||
const str = try t.screen.dumpStringAlloc(alloc, .{ .screen = .{} });
|
||||
defer testing.allocator.free(str);
|
||||
try testing.expectEqualStrings("1\n2\n3\nY\nX", str);
|
||||
}
|
||||
}
|
||||
|
||||
test "Terminal: index bottom of scroll region no scrollback" {
|
||||
const alloc = testing.allocator;
|
||||
var t = try init(alloc, .{ .rows = 5, .cols = 5, .max_scrollback = 0 });
|
||||
defer t.deinit(alloc);
|
||||
|
||||
t.setTopAndBottomMargin(1, 3);
|
||||
t.setCursorPos(4, 1);
|
||||
try t.print('B');
|
||||
@ -6611,11 +6636,6 @@ test "Terminal: index bottom of scroll region" {
|
||||
try t.index();
|
||||
try t.print('X');
|
||||
|
||||
try testing.expect(t.isDirty(.{ .active = .{ .x = 0, .y = 0 } }));
|
||||
try testing.expect(t.isDirty(.{ .active = .{ .x = 0, .y = 1 } }));
|
||||
try testing.expect(t.isDirty(.{ .active = .{ .x = 0, .y = 2 } }));
|
||||
try testing.expect(!t.isDirty(.{ .active = .{ .x = 0, .y = 3 } }));
|
||||
|
||||
{
|
||||
const str = try t.plainString(testing.allocator);
|
||||
defer testing.allocator.free(str);
|
||||
@ -6623,6 +6643,47 @@ test "Terminal: index bottom of scroll region" {
|
||||
}
|
||||
}
|
||||
|
||||
test "Terminal: index bottom of scroll region blank line preserves SGR" {
|
||||
const alloc = testing.allocator;
|
||||
var t = try init(alloc, .{ .rows = 5, .cols = 5 });
|
||||
defer t.deinit(alloc);
|
||||
|
||||
t.setTopAndBottomMargin(1, 3);
|
||||
try t.printString("1\n2\n3");
|
||||
t.setCursorPos(4, 1);
|
||||
try t.print('X');
|
||||
t.setCursorPos(3, 1);
|
||||
try t.setAttribute(.{ .direct_color_bg = .{
|
||||
.r = 0xFF,
|
||||
.g = 0,
|
||||
.b = 0,
|
||||
} });
|
||||
try t.index();
|
||||
|
||||
{
|
||||
const str = try t.screen.dumpStringAlloc(alloc, .{ .viewport = .{} });
|
||||
defer testing.allocator.free(str);
|
||||
try testing.expectEqualStrings("2\n3\n\nX", str);
|
||||
}
|
||||
{
|
||||
const str = try t.screen.dumpStringAlloc(alloc, .{ .screen = .{} });
|
||||
defer testing.allocator.free(str);
|
||||
try testing.expectEqualStrings("1\n2\n3\n\nX", str);
|
||||
}
|
||||
for (0..t.cols) |x| {
|
||||
const list_cell = t.screen.pages.getCell(.{ .active = .{
|
||||
.x = @intCast(x),
|
||||
.y = 2,
|
||||
} }).?;
|
||||
try testing.expect(list_cell.cell.content_tag == .bg_color_rgb);
|
||||
try testing.expectEqual(Cell.RGB{
|
||||
.r = 0xFF,
|
||||
.g = 0,
|
||||
.b = 0,
|
||||
}, list_cell.cell.content.color_rgb);
|
||||
}
|
||||
}
|
||||
|
||||
test "Terminal: cursorUp basic" {
|
||||
const alloc = testing.allocator;
|
||||
var t = try init(alloc, .{ .rows = 5, .cols = 5 });
|
||||
|
||||
Reference in New Issue
Block a user