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38 lines
1.6 KiB
C++
38 lines
1.6 KiB
C++
#ifndef ESCHER_EXPRESSION_VIEW_H
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#define ESCHER_EXPRESSION_VIEW_H
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#include <escher/view.h>
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#include <kandinsky/color.h>
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#include <poincare/expression_layout.h>
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/* This class does not handle the expression layout as the size of the layout is
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* needed to compute the size of table cells hosting the expression. As the size
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* of this cell is determined before we set the expression in the expression
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* view, we cannot use minimalSizeForOptimalDisplay to assess the required
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* size. */
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class ExpressionView : public View {
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public:
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ExpressionView(float horizontalAlignment = 0.0f, float verticalAlignment = 0.5f,
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KDColor textColor = KDColorBlack, KDColor backgroundColor = KDColorWhite);
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void setExpression(Poincare::ExpressionLayout * expressionLayout);
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void drawRect(KDContext * ctx, KDRect rect) const override;
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void setBackgroundColor(KDColor backgroundColor);
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void setTextColor(KDColor textColor);
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void setAlignment(float horizontalAlignment, float verticalAlignment);
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KDSize minimalSizeForOptimalDisplay() const override;
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private:
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/* Warning: we do not need to delete the previous expression layout when
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* deleting object or setting a new expression layout. Indeed, the expression
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* layout is always possessed by a controller which only gives a pointer to
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* the expression view (without cloning it). The named controller is then
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* responsible for freeing the expression layout when required. */
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Poincare::ExpressionLayout * m_expressionLayout;
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float m_horizontalAlignment;
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float m_verticalAlignment;
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KDColor m_textColor;
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KDColor m_backgroundColor;
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};
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#endif
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