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feat: introduce growth options .horizontal_only and .vertical_only
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Growing containers only in one specific direction while fixing the
other dimension (which is then required to be provided - just like
before).
This commit is contained in:
Yves Biener
2026-01-18 13:36:03 +01:00
parent 1621715ad8
commit 836d7669e5
2 changed files with 21 additions and 11 deletions
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28
src/container.zig
View File

@@ -599,9 +599,11 @@ pub const Layout = packed struct {
/// Sizing options which should be used by the `Container`
pub const Size = packed struct {
dim: Point = .{},
grow: enum(u2) {
grow: enum(u3) {
both,
fixed,
vertical_only,
horizontal_only,
vertical,
horizontal,
} = .both,
@@ -732,11 +734,11 @@ pub fn Container(Model: type, Event: type) type {
assert(this.properties.size.dim.y > 0 or size.y > 0);
break :blk .max(size, this.properties.size.dim);
},
.horizontal => blk: {
.horizontal, .horizontal_only => blk: {
assert(this.properties.size.dim.y > 0 or size.y > 0);
break :blk .max(size, this.properties.size.dim);
},
.vertical => blk: {
.vertical, .vertical_only => blk: {
assert(this.properties.size.dim.x > 0 or size.x > 0);
break :blk .max(size, this.properties.size.dim);
},
@@ -799,21 +801,21 @@ pub fn Container(Model: type, Event: type) type {
if (growable_children == 0) first_growable_child = child;
growable_children += 1;
},
.horizontal => if (layout.direction == .horizontal) {
.horizontal, .horizontal_only => if (layout.direction == .horizontal) {
if (growable_children == 0) first_growable_child = child;
growable_children += 1;
},
.vertical => if (layout.direction == .vertical) {
.vertical, .vertical_only => if (layout.direction == .vertical) {
if (growable_children == 0) first_growable_child = child;
growable_children += 1;
},
}
// non layout direction side growth
switch (layout.direction) {
.horizontal => if (child.properties.size.grow == .vertical or child.properties.size.grow == .both) {
.horizontal => if (child.properties.size.grow == .vertical or child.properties.size.grow == .vertical_only or child.properties.size.grow == .both) {
child.size.y = available;
},
.vertical => if (child.properties.size.grow == .horizontal or child.properties.size.grow == .both) {
.vertical => if (child.properties.size.grow == .horizontal or child.properties.size.grow == .vertical_only or child.properties.size.grow == .both) {
child.size.x = available;
},
}
@@ -831,8 +833,8 @@ pub fn Container(Model: type, Event: type) type {
if (child.properties.size.grow == .fixed) continue;
switch (layout.direction) {
.horizontal => if (child.properties.size.grow == .vertical) continue,
.vertical => if (child.properties.size.grow == .horizontal) continue,
.horizontal => if (child.properties.size.grow == .vertical or child.properties.size.grow == .vertical_only) continue,
.vertical => if (child.properties.size.grow == .horizontal or child.properties.size.grow == .horizontal_only) continue,
}
const size = switch (layout.direction) {
@@ -898,6 +900,14 @@ pub fn Container(Model: type, Event: type) type {
this.size = switch (this.properties.size.grow) {
.both => .max(size, fit_size),
.fixed => fit_size,
.horizontal_only => .{
.x = size.x,
.y = fit_size.y,
},
.vertical_only => .{
.x = fit_size.x,
.y = size.y,
},
.horizontal => .{
.x = @max(size.x, fit_size.x),
.y = size.y,

4
src/element.zig
View File

@@ -219,8 +219,8 @@ pub fn Alignment(Model: type, Event: type) type {
outer: for (0..csize.y) |row| {
inner: for (0..csize.x) |col| {
// do not read/write out of bounce
if (this.size.x < row) break :outer;
if (this.size.y < col) break :inner;
if (this.size.y < row) break :outer;
if (this.size.x < col) break :inner;
cells[((row + origin.y) * size.x) + col + origin.x] = container_cells[(row * csize.x) + col];
}