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fix(element/scrollable): reduce the number of minSize calls and correctly resize scrollable Container
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Yves Biener
2025-11-05 18:33:16 +01:00
parent e53bb7880b
commit 8ebab702ac
2 changed files with 14 additions and 15 deletions
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2
src/container.zig
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@@ -891,7 +891,7 @@ pub fn Container(Model: type, Event: type) type {
const fit_size = this.fit_resize();
// if (fit_size.y > size.y or fit_size.x > size.x) @panic("error: cannot render in available space");
switch (this.properties.size.grow) {
.both => this.size = Point.max(size, fit_size),
.both => this.size = .max(size, fit_size),
.fixed => {},
.horizontal => this.size = .{
.x = @max(size.x, fit_size.x),

27
src/element.zig
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@@ -275,26 +275,26 @@ pub fn Scrollable(Model: type, Event: type) type {
const last_max_anchor_x = this.container_size.x -| this.size.x;
const last_max_anchor_y = this.container_size.y -| this.size.y;
this.size = size;
// NOTE `container_size` denotes the `size` required for the container contents
var container_size = this.container.element.minSize(size);
if (this.configuration.scrollbar) {
this.configuration.y_axis = this.container.properties.size.dim.x > this.size.x or this.container.size.x > this.size.x;
this.configuration.x_axis = this.container.properties.size.dim.y > this.size.y or this.container.size.y > this.size.y;
this.configuration.y_axis = this.container.properties.size.dim.x > size.x or container_size.x > size.x;
this.configuration.x_axis = this.container.properties.size.dim.y > size.y or container_size.y > size.y;
// correct size dimensions due to space needed for the axis (if any)
container_size.x -= if (this.configuration.x_axis) 1 else 0;
container_size.y -= if (this.configuration.y_axis) 1 else 0;
}
const min_size = this.container.element.minSize(size);
this.container.resize(.{
.x = min_size.x - if (this.configuration.x_axis) @as(u16, 1) else @as(u16, 0),
.y = min_size.y - if (this.configuration.y_axis) @as(u16, 1) else @as(u16, 0),
});
} else this.container.resize(this.container.element.minSize(size)); // notify the container about the minimal size it should have (can be larger)
const new_max_anchor_x = this.container.size.x -| size.x;
const new_max_anchor_y = this.container.size.y -| size.y;
const new_max_anchor_x = container_size.x -| size.x;
const new_max_anchor_y = container_size.y -| size.y;
// correct anchor if necessary
if (new_max_anchor_x < last_max_anchor_x and this.anchor.x > new_max_anchor_x) this.anchor.x = new_max_anchor_x;
if (new_max_anchor_y < last_max_anchor_y and this.anchor.y > new_max_anchor_y) this.anchor.y = new_max_anchor_y;
this.container_size = this.container.size;
this.size = size;
this.container.resize(container_size); // notify the container about the minimal size it should have
this.container_size = container_size;
}
fn reposition(ctx: *anyopaque, _: Point) void {
@@ -305,7 +305,6 @@ pub fn Scrollable(Model: type, Event: type) type {
fn handle(ctx: *anyopaque, model: *Model, event: Event) !void {
const this: *@This() = @ptrCast(@alignCast(ctx));
switch (event) {
.init => this.container.resize(this.container.element.minSize(this.size)),
// TODO what about multiple scrollable `Element` usages? mouse
// can differ between them (due to the event being only send to
// the `Container` / `Element` one under the cursor!)