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Cache computed row & column shapes in grid_layout

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This commit is contained in:
Nikita Lisitsa 2022-03-12 01:16:01 +03:00
parent 884a7c745b
commit de352705f4
2 changed files with 15 additions and 11 deletions
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4
libs/ui/include/psemek/ui/grid_layout.hpp
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@ -49,6 +49,10 @@ namespace psemek::ui
~grid_layout() override;
protected:
std::vector<geom::interval<float>> row_shape_;
std::vector<geom::interval<float>> column_shape_;
private:
util::array<std::shared_ptr<element>, 2> children_;
std::vector<element *> children_range_;

22
libs/ui/source/grid_layout.cpp
View file

@ -228,15 +228,15 @@ namespace psemek::ui
float const row_weight_sum = std::accumulate(row_weight_.begin(), row_weight_.end(), 0.f);
float const column_weight_sum = std::accumulate(column_weight_.begin(), column_weight_.end(), 0.f);
std::vector<geom::interval<float>> row_shape(row_count());
std::vector<geom::interval<float>> column_shape(column_count());
row_shape_.resize(row_count());
column_shape_.resize(column_count());
// First, allocate minimized rows
for (std::size_t i = 0; i < row_count(); ++i)
{
if (row_weight_[i] == 0.f)
{
row_shape[i] = {0.f, row_size[i].min};
row_shape_[i] = {0.f, row_size[i].min};
available_height -= row_size[i].min;
}
}
@ -250,16 +250,16 @@ namespace psemek::ui
continue;
float const row_height = available_height * row_weight_[i] / row_weight_sum;
row_shape[i] = {0.f, row_height};
row_shape_[i] = {0.f, row_height};
}
// Finally, move rows one after another
for (std::size_t i = 0; i < row_count(); ++i)
{
if (i == 0)
row_shape[i] += bbox[1].min + (outer_margin_ ? margin : 0.f);
row_shape_[i] += bbox[1].min + (outer_margin_ ? margin : 0.f);
else
row_shape[i] += row_shape[i - 1].max + margin;
row_shape_[i] += row_shape_[i - 1].max + margin;
}
// First, allocate minimized columns
@ -267,7 +267,7 @@ namespace psemek::ui
{
if (column_weight_[i] == 0.f)
{
column_shape[i] = {0.f, column_size[i].min};
column_shape_[i] = {0.f, column_size[i].min};
available_width -= column_size[i].min;
}
}
@ -281,16 +281,16 @@ namespace psemek::ui
continue;
float const column_width = available_width * column_weight_[i] / column_weight_sum;
column_shape[i] = {0.f, column_width};
column_shape_[i] = {0.f, column_width};
}
// Finally, move rows one after another
for (std::size_t i = 0; i < column_count(); ++i)
{
if (i == 0)
column_shape[i] += bbox[0].min + (outer_margin_ ? margin : 0.f);
column_shape_[i] += bbox[0].min + (outer_margin_ ? margin : 0.f);
else
column_shape[i] += column_shape[i - 1].max + margin;
column_shape_[i] += column_shape_[i - 1].max + margin;
}
// Apply calculated shapes
@ -300,7 +300,7 @@ namespace psemek::ui
{
if (!get(i, j)) continue;
get(i, j)->reshape({{column_shape[j], row_shape[i]}});
get(i, j)->reshape({{column_shape_[j], row_shape_[i]}});
}
}
}