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computed when the calculation is added to the store and don't change afterwards. Otherwise, if their heights change when scrolling (due to a modification of the display output type - ExactOnly, ApproximateOnly...), it generates crashes.
85 lines
3.9 KiB
C++
85 lines
3.9 KiB
C++
#ifndef CALCULATION_HISTORY_VIEW_CELL_H
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#define CALCULATION_HISTORY_VIEW_CELL_H
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#include <escher.h>
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#include "calculation.h"
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#include "../shared/scrollable_multiple_expressions_view.h"
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namespace Calculation {
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class HistoryViewCell;
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class HistoryViewCellDataSource {
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public:
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enum class SubviewType {
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None = 0,
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Input = 1,
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Output = 2,
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Ellipsis = 3
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};
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HistoryViewCellDataSource() : m_selectedSubviewType(SubviewType::Output) {}
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virtual void setSelectedSubviewType(SubviewType subviewType, bool sameCell, int previousSelectedX = -1, int previousSelectedY = -1);
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SubviewType selectedSubviewType() const { return m_selectedSubviewType; }
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private:
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/* This method should belong to a delegate instead of a data source but as
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* both the data source and the delegate will be the same controller, we
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* avoid keeping 2 pointers in HistoryViewCell. */
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// It returns the selected cell at the end of the method
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virtual void historyViewCellDidChangeSelection(HistoryViewCell ** cell, HistoryViewCell ** previousCell, int previousSelectedCellX, int previousSelectedCellY, SubviewType type, SubviewType previousType) = 0;
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SubviewType m_selectedSubviewType;
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};
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class HistoryViewCell : public ::EvenOddCell, public Responder {
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public:
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constexpr static KDCoordinate k_margin = Metric::CommonSmallMargin;
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constexpr static KDCoordinate k_inputOutputViewsVerticalMargin = k_margin;
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constexpr static KDCoordinate k_inputViewHorizontalMargin = Shared::AbstractScrollableMultipleExpressionsView::k_horizontalMargin;
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static KDCoordinate Height(Calculation * calculation, bool expanded);
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HistoryViewCell(Responder * parentResponder = nullptr);
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static bool ViewsCanBeSingleLine(KDCoordinate inputViewWidth, KDCoordinate outputViewWidth);
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void cellDidSelectSubview(HistoryViewCellDataSource::SubviewType type, HistoryViewCellDataSource::SubviewType previousType = HistoryViewCellDataSource::SubviewType::None);
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void setEven(bool even) override;
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void setHighlighted(bool highlight) override;
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void reloadSubviewHighlight();
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void setDataSource(HistoryViewCellDataSource * dataSource) { m_dataSource = dataSource; }
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bool displaysSingleLine() const {
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return m_calculationSingleLine;
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}
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Responder * responder() override {
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return this;
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}
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Poincare::Layout layout() const override;
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KDColor backgroundColor() const override { return m_even ? KDColorWhite : Palette::WallScreen; }
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void resetMemoization();
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void setCalculation(Calculation * calculation, bool expanded, bool canChangeDisplayOutput = false);
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int numberOfSubviews() const override { return 2 + displayedEllipsis(); }
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View * subviewAtIndex(int index) override;
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void layoutSubviews(bool force = false) override;
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void didBecomeFirstResponder() override;
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bool handleEvent(Ion::Events::Event event) override;
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Shared::ScrollableTwoExpressionsView * outputView() { return &m_scrollableOutputView; }
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ScrollableExpressionView * inputView() { return &m_inputView; }
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Calculation::AdditionalInformationType additionalInformationType() const { return m_calculationAdditionInformation; }
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private:
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constexpr static KDCoordinate k_resultWidth = 80;
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void computeSubviewFrames(KDCoordinate frameWidth, KDCoordinate frameHeight, KDRect * ellipsisFrame, KDRect * inputFrame, KDRect * outputFrame);
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void reloadScroll();
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void reloadOutputSelection(HistoryViewCellDataSource::SubviewType previousType);
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bool displayedEllipsis() const {
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return m_highlighted && m_calculationAdditionInformation != Calculation::AdditionalInformationType::None;
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}
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uint32_t m_calculationCRC32;
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Calculation::DisplayOutput m_calculationDisplayOutput;
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Calculation::AdditionalInformationType m_calculationAdditionInformation;
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ScrollableExpressionView m_inputView;
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Shared::ScrollableTwoExpressionsView m_scrollableOutputView;
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EvenOddCellWithEllipsis m_ellipsis;
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HistoryViewCellDataSource * m_dataSource;
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bool m_calculationExpanded;
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bool m_calculationSingleLine;
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};
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}
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#endif
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