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[poincare] Hiding/Show EmptyLayouts: check pointed layout's neighbour

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Change-Id: I5f6977de5c14e409b40f7f371d5dfa390f2dca37
This commit is contained in:
Léa Saviot
2018-04-17 10:06:14 +02:00
parent ba97e63580
commit 3abb619283
1 changed files with 23 additions and 0 deletions
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23
poincare/src/expression_layout_cursor.cpp
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@@ -221,13 +221,36 @@ bool ExpressionLayoutCursor::hideEmptyLayoutIfNeeded() {
}
bool ExpressionLayoutCursor::privateShowHideEmptyLayoutIfNeeded(bool show) {
/* Find Empty layouts adjacent to the cursor: Check the pointed layout and its
* neighbour in an Horizontal layout */
// Check the pointed layout
if (m_pointedExpressionLayout->isEmpty()) {
/* An empty layout is either an EmptyLayout or an HorizontalLayout with one
* child only, and this child is an EmptyLayout. */
if (m_pointedExpressionLayout->isHorizontal()) {
static_cast<EmptyLayout *>(m_pointedExpressionLayout->editableChild(0))->setVisible(show);
} else {
static_cast<EmptyLayout *>(m_pointedExpressionLayout)->setVisible(show);
}
return true;
} else if (m_pointedExpressionLayout->parent() != nullptr
&& m_pointedExpressionLayout->parent()->isHorizontal())
{
// Check the neighbour of the pointed layout in an HorizontalLayout
int indexInParent = m_pointedExpressionLayout->parent()->indexOfChild(m_pointedExpressionLayout);
int indexToCheck = m_position == Position::Right ? indexInParent + 1 : indexInParent - 1;
if (indexToCheck >=0
&& indexToCheck < m_pointedExpressionLayout->parent()->numberOfChildren()
&& m_pointedExpressionLayout->parent()->child(indexToCheck)->isEmpty())
{
if (m_pointedExpressionLayout->isHorizontal()) {
static_cast<EmptyLayout *>(m_pointedExpressionLayout->editableParent()->editableChild(indexToCheck)->editableChild(0))->setVisible(show);
} else {
static_cast<EmptyLayout *>(m_pointedExpressionLayout->editableParent()->editableChild(indexToCheck))->setVisible(show);
}
return true;
}
}
return false;
}