forked from Bananymous/banan-os
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
#include <LibGUI/Widget/Grid.h>
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namespace LibGUI::Widget
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{
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BAN::ErrorOr<BAN::RefPtr<Grid>> Grid::create(BAN::RefPtr<Widget> parent, uint32_t cols, uint32_t rows, uint32_t color, Rectangle geometry)
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{
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auto* grid_ptr = new Grid(parent, geometry, cols, rows);
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if (grid_ptr == nullptr)
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return BAN::Error::from_errno(ENOMEM);
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auto grid = BAN::RefPtr<Grid>::adopt(grid_ptr);
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TRY(grid->initialize(color));
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return grid;
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}
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Widget::Rectangle Grid::grid_element_area(const GridElement& element) const
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{
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const uint32_t this_x = element.col * width() / m_cols;
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const uint32_t this_y = element.row * height() / m_rows;
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const uint32_t next_x = (element.col + element.col_span) * width() / m_cols;
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const uint32_t next_y = (element.row + element.row_span) * height() / m_rows;
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return Widget::Rectangle {
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.x = static_cast<int32_t>(this_x),
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.y = static_cast<int32_t>(this_y),
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.w = next_x - this_x,
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.h = next_y - this_y,
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};
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}
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BAN::ErrorOr<void> Grid::update_geometry_impl()
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{
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for (auto& grid_element : m_grid_elements)
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TRY(grid_element.widget->set_fixed_geometry(grid_element_area(grid_element)));
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return {};
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}
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BAN::ErrorOr<void> Grid::set_widget_position(BAN::RefPtr<Widget> widget, uint32_t col, uint32_t col_span, uint32_t row, uint32_t row_span)
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{
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if (col_span == 0 || row_span == 0)
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return BAN::Error::from_errno(EINVAL);
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if (col + col_span > m_cols)
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return BAN::Error::from_errno(EINVAL);
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if (row + row_span > m_rows)
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return BAN::Error::from_errno(EINVAL);
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ASSERT(widget->parent() == this);
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TRY(m_grid_elements.emplace_back(widget, col, col_span, row, row_span));
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TRY(widget->set_fixed_geometry(grid_element_area(m_grid_elements.back())));
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return {};
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}
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}
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