expression_layout_field_content_view.cpp
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#include <escher/expression_layout_field.h>
#include <kandinsky/rect.h>
#include <assert.h>
using namespace Poincare;
ExpressionLayoutField::ContentView::ContentView(ExpressionLayout * expressionLayout) :
m_cursor(expressionLayout, ExpressionLayoutCursor::Position::Right),
m_expressionView(0.0f, 0.5f, KDColorBlack, KDColorWhite),
m_cursorView(),
m_isEditing(false)
{
m_expressionView.setExpressionLayout(expressionLayout);
}
void ExpressionLayoutField::ContentView::setEditing(bool isEditing) {
m_isEditing = isEditing;
markRectAsDirty(bounds());
layoutSubviews();
}
void ExpressionLayoutField::ContentView::setBackgroundColor(KDColor c) {
m_expressionView.setBackgroundColor(c);
}
void ExpressionLayoutField::ContentView::cursorPositionChanged() {
layoutCursorSubview();
}
KDRect ExpressionLayoutField::ContentView::cursorRect() {
return m_cursorView.frame();
}
void ExpressionLayoutField::ContentView::clearLayout() {
m_cursor.clearLayout();
}
KDSize ExpressionLayoutField::ContentView::minimalSizeForOptimalDisplay() const {
KDSize evSize = m_expressionView.minimalSizeForOptimalDisplay();
return KDSize(evSize.width() + ExpressionLayoutCursor::k_cursorWidth, evSize.height());
}
View * ExpressionLayoutField::ContentView::subviewAtIndex(int index) {
assert(index >= 0 && index < 2);
View * m_views[] = {&m_expressionView, &m_cursorView};
return m_views[index];
}
void ExpressionLayoutField::ContentView::layoutSubviews() {
m_expressionView.setFrame(bounds());
layoutCursorSubview();
}
void ExpressionLayoutField::ContentView::layoutCursorSubview() {
if (!m_isEditing) {
m_cursorView.setFrame(KDRectZero);
return;
}
KDPoint expressionViewOrigin = m_expressionView.absoluteDrawingOrigin();
ExpressionLayout * pointedLayout = m_cursor.pointedExpressionLayout();
ExpressionLayoutCursor::Position cursorPosition = m_cursor.position();
ExpressionLayoutCursor eqCursor = pointedLayout->equivalentCursor(m_cursor);
if (pointedLayout->hasChild(eqCursor.pointedExpressionLayout())) {
pointedLayout = eqCursor.pointedExpressionLayout();
cursorPosition = eqCursor.position();
}
KDPoint cursoredExpressionViewOrigin = pointedLayout->absoluteOrigin();
KDCoordinate cursorX = expressionViewOrigin.x() + cursoredExpressionViewOrigin.x();
if (cursorPosition == ExpressionLayoutCursor::Position::Right) {
cursorX += pointedLayout->size().width();
}
KDPoint cursorTopLeftPosition(cursorX, expressionViewOrigin.y() + cursoredExpressionViewOrigin.y() + pointedLayout->baseline() - m_cursor.baseline());
m_cursorView.setFrame(KDRect(cursorTopLeftPosition, ExpressionLayoutCursor::k_cursorWidth, m_cursor.cursorHeight()));
}