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feat: support wide characters in win32 gui

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closes #132
This commit is contained in:
CJ van den Berg 2025-09-23 18:03:45 +02:00
parent f7496654ae
commit a9d4fed205
3 changed files with 35 additions and 18 deletions
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19
src/win32/GlyphIndexCache.zig
View file

@ -5,9 +5,15 @@ const Node = struct {
prev: ?u32,
next: ?u32,
codepoint: ?u21,
right_half: ?bool,
};
map: std.AutoHashMapUnmanaged(u21, u32) = .{},
const MapKey = struct {
codepoint: u21,
right_half: bool,
};
map: std.AutoHashMapUnmanaged(MapKey, u32) = .{},
nodes: []Node,
front: u32,
back: u32,
@ -25,13 +31,14 @@ pub fn init(allocator: std.mem.Allocator, capacity: u32) error{OutOfMemory}!Glyp
pub fn clearRetainingCapacity(self: *GlyphIndexCache) void {
self.map.clearRetainingCapacity();
self.nodes[0] = .{ .prev = null, .next = 1, .codepoint = null };
self.nodes[self.nodes.len - 1] = .{ .prev = @intCast(self.nodes.len - 2), .next = null, .codepoint = null };
self.nodes[0] = .{ .prev = null, .next = 1, .codepoint = null, .right_half = null };
self.nodes[self.nodes.len - 1] = .{ .prev = @intCast(self.nodes.len - 2), .next = null, .codepoint = null, .right_half = null };
for (self.nodes[1 .. self.nodes.len - 1], 1..) |*node, index| {
node.* = .{
.prev = @intCast(index - 1),
.next = @intCast(index + 1),
.codepoint = null,
.right_half = null,
};
}
self.front = 0;
@ -51,12 +58,12 @@ const Reserved = struct {
index: u32,
replaced: ?u21,
};
pub fn reserve(self: *GlyphIndexCache, allocator: std.mem.Allocator, codepoint: u21) error{OutOfMemory}!union(enum) {
pub fn reserve(self: *GlyphIndexCache, allocator: std.mem.Allocator, codepoint: u21, right_half: bool) error{OutOfMemory}!union(enum) {
newly_reserved: Reserved,
already_reserved: u32,
} {
{
const entry = try self.map.getOrPut(allocator, codepoint);
const entry = try self.map.getOrPut(allocator, .{ .codepoint = codepoint, .right_half = right_half });
if (entry.found_existing) {
self.moveToBack(entry.value_ptr.*);
return .{ .already_reserved = entry.value_ptr.* };
@ -69,7 +76,7 @@ pub fn reserve(self: *GlyphIndexCache, allocator: std.mem.Allocator, codepoint:
const replaced = self.nodes[self.front].codepoint;
self.nodes[self.front].codepoint = codepoint;
if (replaced) |r| {
const removed = self.map.remove(r);
const removed = self.map.remove(.{ .codepoint = r, .right_half = self.nodes[self.front].right_half orelse false });
std.debug.assert(removed);
}
const save_front = self.front;

11
src/win32/d3d11.zig
View file

@ -149,7 +149,7 @@ pub const WindowState = struct {
}
// TODO: this should take a utf8 graphme instead
pub fn generateGlyph(state: *WindowState, font: Font, codepoint: u21) u32 {
pub fn generateGlyph(state: *WindowState, font: Font, codepoint: u21, right_half: bool) u32 {
// for now we'll just use 1 texture and leverage the entire thing
const texture_cell_count: XY(u16) = getD3d11TextureMaxCellCount(font.cell_size);
const texture_cell_count_total: u32 =
@ -187,12 +187,15 @@ pub const WindowState = struct {
switch (glyph_index_cache.reserve(
global.glyph_cache_arena.allocator(),
codepoint,
right_half,
) catch |e| oom(e)) {
.newly_reserved => |reserved| {
// var render_success = false;
// defer if (!render_success) state.glyph_index_cache.remove(reserved.index);
const pos: XY(u16) = cellPosFromIndex(reserved.index, texture_cell_count.x);
const coord = coordFromCellPos(font.cell_size, pos);
var staging_size = font.cell_size;
staging_size.x = if (right_half) staging_size.x * 2 else staging_size.x;
const staging = global.staging_texture.update(font.cell_size);
var utf8_buf: [7]u8 = undefined;
const utf8_len: u3 = std.unicode.utf8Encode(codepoint, &utf8_buf) catch |e| std.debug.panic(
@ -204,10 +207,10 @@ pub const WindowState = struct {
utf8_buf[0..utf8_len],
);
const box: win32.D3D11_BOX = .{
.left = 0,
.left = if (right_half) font.cell_size.x else 0,
.top = 0,
.front = 0,
.right = font.cell_size.x,
.right = if (right_half) font.cell_size.x * 2 else font.cell_size.x,
.bottom = font.cell_size.y,
.back = 1,
};
@ -289,7 +292,7 @@ pub fn paint(
}
const copy_col_count: u16 = @min(col_count, shader_col_count);
const blank_space_glyph_index = state.generateGlyph(font, ' ');
const blank_space_glyph_index = state.generateGlyph(font, ' ', false);
const cell_count: u32 = @as(u32, shader_col_count) * @as(u32, shader_row_count);
state.shader_cells.updateCount(cell_count);

23
src/win32/gui.zig
View file

@ -1081,19 +1081,26 @@ fn WndProc(
global.render_cells_arena.allocator(),
global.screen.buf.len,
) catch |e| oom(e);
var prev_width: usize = 1;
var prev_cell: render.Cell = undefined;
for (global.screen.buf, global.render_cells.items) |*screen_cell, *render_cell| {
const width = screen_cell.char.width;
const codepoint = if (std.unicode.utf8ValidateSlice(screen_cell.char.grapheme))
std.unicode.wtf8Decode(screen_cell.char.grapheme) catch std.unicode.replacement_character
else
std.unicode.replacement_character;
render_cell.* = .{
.glyph_index = state.render_state.generateGlyph(
font,
codepoint,
),
.background = renderColorFromVaxis(screen_cell.style.bg),
.foreground = renderColorFromVaxis(screen_cell.style.fg),
};
if (prev_width > 1) {
render_cell.* = prev_cell;
render_cell.glyph_index = state.render_state.generateGlyph(font, codepoint, true);
} else {
render_cell.* = .{
.glyph_index = state.render_state.generateGlyph(font, codepoint, false),
.background = renderColorFromVaxis(screen_cell.style.bg),
.foreground = renderColorFromVaxis(screen_cell.style.fg),
};
}
prev_width = width;
prev_cell = render_cell.*;
}
render.paint(
&state.render_state,