Wt

#include "TableView.h"

#include <Wt/WAbstractItemModel>

// Pixels

const int TableView::kTableHeaderRowHeight = 38;

const int TableView::kTableBodyRowHeight   = 48;

const int TableView::kTableCellPadding     = 7;

const int TableView::kScrollBarWidth       = 20;

const int TableView::kDefaultDateTimeWidth = 120;

TableView::TableView(Wt::WContainerWidget* parent)

    : Wt::WTableView(parent)

{

    setHeaderHeight(kTableHeaderRowHeight);

    setRowHeight(kTableBodyRowHeight);

    setLayoutSizeAware(true);

}

auto TableView::layoutSizeChanged(int width, int height) -> void {

    // Calculate our fixed width columns

    auto nfixed = 0;

    auto nrel = 0;

    // "fixed" number of pixels

    auto fixed = 0.0;

    for (auto col : widths_) if (col.second.unit() == Wt::WLength::Percentage) nrel++;

    auto percent_sum=0.0;

    for (auto col : widths_) {

        if (col.second.unit() != Wt::WLength::Percentage)

            fixed += col.second.toPixels();

        else

            percent_sum += col.second.value();

    }

    // Check to see if the relative columns are taking up ~100% of the

    // non-fixed width.  "Roughly" because sometimes they're intentionally off

    // by a fraction just to avoid a scroll bar

    const auto epsilon = 0.5;

    if (100.0 - percent_sum > epsilon) Wt::log("debug") << "Warning: Relative column widths do not take up 100% of the available width";

    // Columns who's width wasn't explicitly set are considered "fixed", and Wt

    // will default them to 150px or something.

    nfixed = model()->columnCount() - nrel;

    // Show scroll bar?

    bool show_scroll = visible_rows_ > 0 && model()->rowCount() > visible_rows_;

    auto remainder = width - (fixed + (kTableCellPadding * model()->columnCount()) + (show_scroll ? kScrollBarWidth : 0.0));

    for (auto col : widths_) {

        if (col.second.unit() == Wt::WLength::Percentage) {

            setColumnWidth(col.first,  Wt::WLength(col.second.value()/100.0*remainder, Wt::WLength::Pixel));

        }

    }

    // Pass the call up the chain

    Wt::WTableView::layoutSizeChanged(width, height);

}

auto TableView::setColumnWidth(int column, const Wt::WLength& width) -> void {

    // Just save the data and pass the the work up

    widths_.emplace(column, width);

    Wt::WTableView::setColumnWidth(column, width);

}

/* vim: set ts=4 sw=4 sts=4 expandtab ffs=unix : */