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Fixes a Gridcontainer wrong children fitting with expanded+non-zero minisize 

(cherry picked from commit d1f32708b7)
This commit is contained in:
Gilles Roudiere 2018-01-19 00:56:30 +01:00 committed by Hein-Pieter van Braam
parent a6ca62ac79
commit a206d3d2fc
1 changed files with 67 additions and 56 deletions
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123
scene/gui/grid_container.cpp
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@ -43,107 +43,118 @@ void GridContainer::_notification(int p_what) {
int hsep = get_constant("hseparation");
int vsep = get_constant("vseparation");
int max_col = MIN(get_child_count(), columns);
int max_row = get_child_count() / columns;
int idx = 0;
int max_row = 0;
int max_col = 0;
Size2 size = get_size();
// Compute the per-column/per-row data
for (int i = 0; i < get_child_count(); i++) {
Control *c = Object::cast_to<Control>(get_child(i));
if (!c || !c->is_visible_in_tree())
continue;
int row = idx / columns;
int col = idx % columns;
int row = i / columns;
int col = i % columns;
Size2i ms = c->get_combined_minimum_size();
if (col_minw.has(col))
col_minw[col] = MAX(col_minw[col], ms.width);
else
col_minw[col] = ms.width;
if (row_minh.has(row))
row_minh[row] = MAX(row_minh[row], ms.height);
else
row_minh[row] = ms.height;
//print_line("store row "+itos(row)+" mw "+itos(ms.height));
if (c->get_h_size_flags() & SIZE_EXPAND)
if (c->get_h_size_flags() & SIZE_EXPAND) {
col_expanded.insert(col);
if (c->get_v_size_flags() & SIZE_EXPAND)
}
if (c->get_v_size_flags() & SIZE_EXPAND) {
row_expanded.insert(row);
max_col = MAX(col, max_col);
max_row = MAX(row, max_row);
idx++;
}
}
Size2 ms;
int expand_rows = 0;
int expand_cols = 0;
// Evaluate the remaining space for expanded columns/rows
Size2 remaining_space = get_size();
for (Map<int, int>::Element *E = col_minw.front(); E; E = E->next()) {
ms.width += E->get();
if (col_expanded.has(E->key()))
expand_cols++;
if (!col_expanded.has(E->key()))
remaining_space.width -= E->get();
}
for (Map<int, int>::Element *E = row_minh.front(); E; E = E->next()) {
ms.height += E->get();
if (row_expanded.has(E->key()))
expand_rows++;
if (!row_expanded.has(E->key()))
remaining_space.height -= E->get();
}
remaining_space.height -= vsep * (max_row - 1);
remaining_space.width -= hsep * (max_col - 1);
bool can_fit = false;
while (!can_fit) {
// Check if all minwidth constraints are ok if we use the remaining space
can_fit = true;
int max_index = 0;
for (Set<int>::Element *E = col_expanded.front(); E; E = E->next()) {
if (col_minw[E->get()] > col_minw[max_index]) {
max_index = col_minw[E->get()];
}
if (can_fit && (remaining_space.width / col_expanded.size()) < col_minw[E->get()]) {
can_fit = false;
}
}
// If not, the column with maximum minwidth is not expanded
if (!can_fit) {
col_expanded.erase(max_index);
remaining_space.width -= col_minw[max_index];
}
}
ms.height += vsep * max_row;
ms.width += hsep * max_col;
can_fit = false;
while (!can_fit) {
// Check if all minwidth constraints are ok if we use the remaining space
can_fit = true;
int max_index = 0;
for (Set<int>::Element *E = row_expanded.front(); E; E = E->next()) {
if (row_minh[E->get()] > row_minh[max_index]) {
max_index = row_minh[E->get()];
}
if (can_fit && (remaining_space.height / row_expanded.size()) < row_minh[E->get()]) {
can_fit = false;
}
}
int row_expand = expand_rows ? (size.y - ms.y) / expand_rows : 0;
int col_expand = expand_cols ? (size.x - ms.x) / expand_cols : 0;
// If not, the row with maximum minwidth is not expanded
if (!can_fit) {
row_expanded.erase(max_index);
remaining_space.height -= row_minh[max_index];
}
}
// Finally, fit the nodes
int col_expand = remaining_space.width / col_expanded.size();
int row_expand = remaining_space.height / row_expanded.size();
int col_ofs = 0;
int row_ofs = 0;
idx = 0;
for (int i = 0; i < get_child_count(); i++) {
Control *c = Object::cast_to<Control>(get_child(i));
if (!c || !c->is_visible_in_tree())
continue;
int row = idx / columns;
int col = idx % columns;
int row = i / columns;
int col = i % columns;
if (col == 0) {
col_ofs = 0;
if (row > 0 && row_minh.has(row - 1))
row_ofs += row_minh[row - 1] + vsep + (row_expanded.has(row - 1) ? row_expand : 0);
if (row > 0)
row_ofs += ((row_expanded.has(row - 1)) ? row_expand : row_minh[row - 1]) + vsep;
}
Size2 s;
if (col_minw.has(col))
s.width = col_minw[col];
if (row_minh.has(row))
s.height = row_minh[row];
if (row_expanded.has(row))
s.height += row_expand;
if (col_expanded.has(col))
s.width += col_expand;
Point2 p(col_ofs, row_ofs);
Size2 s((col_expanded.has(col)) ? col_expand : col_minw[col], (row_expanded.has(row)) ? row_expand : row_minh[row]);
//print_line("col: "+itos(col)+" row: "+itos(row)+" col_ofs: "+itos(col_ofs)+" row_ofs: "+itos(row_ofs));
fit_child_in_rect(c, Rect2(p, s));
//print_line("col: "+itos(col)+" row: "+itos(row)+" rect: "+Rect2(p,s));
if (col_minw.has(col)) {
col_ofs += col_minw[col] + hsep + (col_expanded.has(col) ? col_expand : 0);
}
idx++;
col_ofs += s.width + hsep;
}
} break;