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c2d273bba5
If the number of layouts could be infinite, we would have memory problems. A Layout uses at least one char when being serialized, so we use the same limit as the char limit in TextField. Change-Id: Ib8f9c05d04a4dde5b6ca96a732e3e4175dd65b9c
69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
#include <escher/expression_view.h>
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using namespace Poincare;
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ExpressionView::ExpressionView(float horizontalAlignment, float verticalAlignment,
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KDColor textColor, KDColor backgroundColor) :
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m_expressionLayout(nullptr),
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m_horizontalAlignment(horizontalAlignment),
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m_verticalAlignment(verticalAlignment),
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m_textColor(textColor),
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m_backgroundColor(backgroundColor)
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{
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}
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ExpressionLayout * ExpressionView::expressionLayout() const {
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return m_expressionLayout;
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}
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void ExpressionView::setExpressionLayout(ExpressionLayout * expressionLayout) {
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m_expressionLayout = expressionLayout;
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markRectAsDirty(bounds());
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}
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void ExpressionView::setBackgroundColor(KDColor backgroundColor) {
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if (m_backgroundColor != backgroundColor) {
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m_backgroundColor = backgroundColor;
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markRectAsDirty(bounds());
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}
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}
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void ExpressionView::setTextColor(KDColor textColor) {
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if (textColor != m_textColor) {
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m_textColor = textColor;
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markRectAsDirty(bounds());
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}
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}
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void ExpressionView::setAlignment(float horizontalAlignment, float verticalAlignment) {
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m_horizontalAlignment = horizontalAlignment;
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m_verticalAlignment = verticalAlignment;
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markRectAsDirty(bounds());
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}
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int ExpressionView::numberOfLayouts() const {
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return m_expressionLayout->numberOfDescendants(true);
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}
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KDSize ExpressionView::minimalSizeForOptimalDisplay() const {
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if (m_expressionLayout == nullptr) {
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return KDSizeZero;
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}
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return m_expressionLayout->size();
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}
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KDPoint ExpressionView::drawingOrigin() const {
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KDSize expressionSize = m_expressionLayout->size();
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return KDPoint(m_horizontalAlignment*(m_frame.width() - expressionSize.width()), max(0, (m_frame.height() - expressionSize.height())/2));
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}
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KDPoint ExpressionView::absoluteDrawingOrigin() const {
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return drawingOrigin().translatedBy(m_frame.topLeft());
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}
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void ExpressionView::drawRect(KDContext * ctx, KDRect rect) const {
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ctx->fillRect(rect, m_backgroundColor);
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if (m_expressionLayout != nullptr) {
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m_expressionLayout->draw(ctx, drawingOrigin(), m_textColor, m_backgroundColor);
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}
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}
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