6663b6c9
 adorian
projet complet av...
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#include "scrollable_exact_approximate_expressions_view.h"
#include "../i18n.h"
#include <assert.h>
using namespace Poincare;
namespace Shared {
ScrollableExactApproximateExpressionsView::ContentCell::ContentCell() :
m_approximateExpressionView(),
m_approximateSign(KDText::FontSize::Large, I18n::Message::AlmostEqual, 0.5f, 0.5f, Palette::GreyVeryDark),
m_exactExpressionView(),
m_selectedSubviewType((SubviewType)0)
{
}
KDColor ScrollableExactApproximateExpressionsView::ContentCell::backgroundColor() const {
KDColor background = m_even ? KDColorWhite : Palette::WallScreen;
return background;
}
void ScrollableExactApproximateExpressionsView::ContentCell::setHighlighted(bool highlight) {
// Do not call HighlightCell::setHighlighted to avoid marking all cell as dirty
m_highlighted = highlight;
m_exactExpressionView.setBackgroundColor(backgroundColor());
m_approximateExpressionView.setBackgroundColor(backgroundColor());
if (highlight) {
if (m_selectedSubviewType == SubviewType::ExactOutput) {
m_exactExpressionView.setBackgroundColor(Palette::Select);
} else {
m_approximateExpressionView.setBackgroundColor(Palette::Select);
}
}
}
void ScrollableExactApproximateExpressionsView::ContentCell::reloadCell() {
setHighlighted(isHighlighted());
m_approximateSign.setBackgroundColor(backgroundColor());
if (numberOfSubviews() == 1) {
m_approximateExpressionView.setTextColor(KDColorBlack);
} else {
m_approximateExpressionView.setTextColor(Palette::GreyVeryDark);
}
layoutSubviews();
}
KDSize ScrollableExactApproximateExpressionsView::ContentCell::minimalSizeForOptimalDisplay() const {
KDSize approximateExpressionSize = m_approximateExpressionView.minimalSizeForOptimalDisplay();
if (numberOfSubviews() == 1) {
return approximateExpressionSize;
}
KDSize exactExpressionSize = m_exactExpressionView.minimalSizeForOptimalDisplay();
KDCoordinate exactBaseline = m_exactExpressionView.expressionLayout()->baseline();
KDCoordinate approximateBaseline = m_approximateExpressionView.expressionLayout()->baseline();
KDCoordinate height = max(exactBaseline, approximateBaseline) + max(exactExpressionSize.height()-exactBaseline, approximateExpressionSize.height()-approximateBaseline);
KDSize approximateSignSize = m_approximateSign.minimalSizeForOptimalDisplay();
return KDSize(exactExpressionSize.width()+approximateSignSize.width()+approximateExpressionSize.width()+2*k_digitHorizontalMargin, height);
}
void ScrollableExactApproximateExpressionsView::ContentCell::setSelectedSubviewType(ScrollableExactApproximateExpressionsView::SubviewType subviewType) {
m_selectedSubviewType = subviewType;
setHighlighted(isHighlighted());
}
Poincare::ExpressionLayout * ScrollableExactApproximateExpressionsView::ContentCell::expressionLayout() const {
if (m_selectedSubviewType == SubviewType::ExactOutput) {
return m_exactExpressionView.expressionLayout();
} else {
return m_approximateExpressionView.expressionLayout();
}
}
int ScrollableExactApproximateExpressionsView::ContentCell::numberOfSubviews() const {
if (m_exactExpressionView.expressionLayout() != nullptr) {
return 3;
}
return 1;
}
View * ScrollableExactApproximateExpressionsView::ContentCell::subviewAtIndex(int index) {
View * views[3] = {&m_approximateExpressionView, &m_approximateSign, &m_exactExpressionView};
return views[index];
}
void ScrollableExactApproximateExpressionsView::ContentCell::layoutSubviews() {
KDCoordinate height = bounds().height();
KDSize approximateExpressionSize = m_approximateExpressionView.minimalSizeForOptimalDisplay();
if (numberOfSubviews() == 1) {
m_approximateExpressionView.setFrame(KDRect(0, 0, approximateExpressionSize.width(), height));
return;
}
KDCoordinate exactBaseline = m_exactExpressionView.expressionLayout()->baseline();
KDCoordinate approximateBaseline = m_approximateExpressionView.expressionLayout()->baseline();
KDCoordinate baseline = max(exactBaseline, approximateBaseline);
KDSize exactExpressionSize = m_exactExpressionView.minimalSizeForOptimalDisplay();
KDSize approximateSignSize = m_approximateSign.minimalSizeForOptimalDisplay();
m_exactExpressionView.setFrame(KDRect(0, baseline-exactBaseline, exactExpressionSize));
m_approximateExpressionView.setFrame(KDRect(2*k_digitHorizontalMargin+exactExpressionSize.width()+approximateSignSize.width(), baseline-approximateBaseline, approximateExpressionSize));
m_approximateSign.setFrame(KDRect(k_digitHorizontalMargin+exactExpressionSize.width(), baseline-approximateSignSize.height()/2, approximateSignSize));
}
ScrollableExactApproximateExpressionsView::ScrollableExactApproximateExpressionsView(Responder * parentResponder) :
ScrollableView(parentResponder, &m_contentCell, this),
m_contentCell()
{
}
void ScrollableExactApproximateExpressionsView::setExpressions(ExpressionLayout ** expressionsLayout) {
m_contentCell.approximateExpressionView()->setExpressionLayout(expressionsLayout[0]);
m_contentCell.exactExpressionView()->setExpressionLayout(expressionsLayout[1]);
m_contentCell.layoutSubviews();
}
void ScrollableExactApproximateExpressionsView::setEqualMessage(I18n::Message equalSignMessage) {
m_contentCell.approximateSign()->setMessage(equalSignMessage);
}
void ScrollableExactApproximateExpressionsView::didBecomeFirstResponder() {
if (m_contentCell.exactExpressionView()->expressionLayout() == nullptr) {
setSelectedSubviewType(SubviewType::ApproximativeOutput);
} else {
setSelectedSubviewType(SubviewType::ExactOutput);
}
}
bool ScrollableExactApproximateExpressionsView::handleEvent(Ion::Events::Event event) {
if (m_contentCell.exactExpressionView()->expressionLayout() == nullptr) {
return ScrollableView::handleEvent(event);
}
bool rightExpressionIsVisible = minimalSizeForOptimalDisplay().width() - m_contentCell.approximateExpressionView()->minimalSizeForOptimalDisplay().width() - m_manualScrollingOffset.x() < bounds().width()
;
bool leftExpressionIsVisible = m_contentCell.exactExpressionView()->minimalSizeForOptimalDisplay().width() - m_manualScrollingOffset.x() > 0;
if ((event == Ion::Events::Right && selectedSubviewType() == SubviewType::ExactOutput && rightExpressionIsVisible) ||
(event == Ion::Events::Left && selectedSubviewType() == SubviewType::ApproximativeOutput && leftExpressionIsVisible)) {
SubviewType otherSubviewType = selectedSubviewType() == SubviewType::ExactOutput ? SubviewType::ApproximativeOutput : SubviewType::ExactOutput;
setSelectedSubviewType(otherSubviewType);
return true;
}
return ScrollableView::handleEvent(event);
}
KDSize ScrollableExactApproximateExpressionsView::minimalSizeForOptimalDisplay() const {
return m_contentCell.minimalSizeForOptimalDisplay();
}
}
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