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Make ui::screen use new size constrains api

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This commit is contained in:
Nikita Lisitsa 2022-05-26 23:54:15 +03:00
parent 21ae912271
commit 2574b7aa2b
1 changed files with 68 additions and 47 deletions
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115
libs/ui/source/screen.cpp
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@ -40,66 +40,87 @@ namespace psemek::ui
void screen::reshape(geom::box<float, 2> const & bbox) void screen::reshape(geom::box<float, 2> const & bbox)
{ {
shape_.box = bbox; shape_.box = bbox;
auto const m = bbox.center();
auto cs = children(); auto cs = children();
for (std::size_t i = 0; i < cs.size(); ++i) for (std::size_t i = 0; i < cs.size(); ++i)
{ {
auto c = cs[i]; auto c = cs[i];
if (!c) continue; if (!c) continue;
auto sc = c->size_constraints();
auto size = bbox.dimensions();
size[0] = std::min(size[0], sc[0].min);
size[1] = std::min(size[1], sc[1].min);
auto m = bbox.center(); auto sc = c->size_constraints();
geom::box<float, 2> cbox = c->shape().bbox(); geom::box<float, 2> cbox = c->shape().bbox();
switch (policies_[i].x) auto update_width = [&](float width)
{ {
case x_policy::left: width = std::min(bbox[0].length(), width);
cbox[0] = {bbox[0].min, bbox[0].min + size[0]};
break;
case x_policy::center:
cbox[0] = {m[0] - size[0] / 2.f, m[0] + size[0] / 2.f};
break;
case x_policy::right:
cbox[0] = {bbox[0].max - size[0], bbox[0].max};
break;
case x_policy::fill:
cbox[0] = bbox[0];
break;
case x_policy::floating:
cbox[0] = geom::expand(cbox[0], (size[0] - cbox[0].length()) / 2.f);
if (cbox[0].min < bbox[0].min) switch (policies_[i].x)
cbox[0] += (bbox[0].min - cbox[0].min); {
else if (cbox[0].max > bbox[0].max) case x_policy::left:
cbox[0] -= (cbox[0].max - bbox[0].max); cbox[0] = {bbox[0].min, bbox[0].min + width};
break; break;
case x_policy::center:
cbox[0] = {m[0] - width / 2.f, m[0] + width / 2.f};
break;
case x_policy::right:
cbox[0] = {bbox[0].max - width, bbox[0].max};
break;
case x_policy::fill:
cbox[0] = bbox[0];
break;
case x_policy::floating:
cbox[0] = geom::expand(cbox[0], (width - cbox[0].length()) / 2.f);
if (cbox[0].min < bbox[0].min)
cbox[0] += (bbox[0].min - cbox[0].min);
else if (cbox[0].max > bbox[0].max)
cbox[0] -= (cbox[0].max - bbox[0].max);
break;
}
};
auto update_height = [&](float height)
{
height = std::min(bbox[1].length(), height);
switch (policies_[i].y)
{
case y_policy::top:
cbox[1] = {bbox[1].min, bbox[1].min + height};
break;
case y_policy::center:
cbox[1] = {m[1] - height / 2.f, m[1] + height / 2.f};
break;
case y_policy::bottom:
cbox[1] = {bbox[1].max - height, bbox[1].max};
break;
case y_policy::fill:
cbox[1] = bbox[1];
break;
case y_policy::floating:
cbox[1] = geom::expand(cbox[1], (height - cbox[1].length()) / 2.f);
if (cbox[1].min < bbox[1].min)
cbox[1] += (bbox[1].min - cbox[1].min);
else if (cbox[1].max > bbox[1].max)
cbox[1] -= (cbox[1].max - bbox[1].max);
break;
}
};
if (width_first())
{
update_width(sc[0].min);
auto hc = c->height_constraints(cbox[0].length());
update_height(hc.min);
} }
else
switch (policies_[i].y)
{ {
case y_policy::top: update_height(sc[1].min);
cbox[1] = {bbox[1].min, bbox[1].min + size[1]}; auto wc = c->width_constraints(cbox[1].length());
break; update_width(wc.min);
case y_policy::center:
cbox[1] = {m[1] - size[1] / 2.f, m[1] + size[1] / 2.f};
break;
case y_policy::bottom:
cbox[1] = {bbox[1].max - size[1], bbox[1].max};
break;
case y_policy::fill:
cbox[1] = bbox[1];
break;
case y_policy::floating:
cbox[1] = geom::expand(cbox[1], (size[1] - cbox[1].length()) / 2.f);
if (cbox[1].min < bbox[1].min)
cbox[1] += (bbox[1].min - cbox[1].min);
else if (cbox[1].max > bbox[1].max)
cbox[1] -= (cbox[1].max - bbox[1].max);
break;
} }
c->reshape(cbox); c->reshape(cbox);