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48e3ea9e5c
The GModel now merely provides an initial width for the columns. Once that has been queried, the table view manages width from then on.
409 lines
15 KiB
C++
409 lines
15 KiB
C++
#include <LibGUI/GTableView.h>
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#include <LibGUI/GModel.h>
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#include <LibGUI/GScrollBar.h>
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#include <LibGUI/GPainter.h>
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#include <LibGUI/GTextBox.h>
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#include <LibGUI/GWindow.h>
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#include <Kernel/KeyCode.h>
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#include <AK/StringBuilder.h>
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GTableView::GTableView(GWidget* parent)
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: GAbstractView(parent)
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{
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set_frame_shape(FrameShape::Container);
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set_frame_shadow(FrameShadow::Sunken);
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set_frame_thickness(2);
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}
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GTableView::~GTableView()
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{
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}
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void GTableView::update_content_size()
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{
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if (!model())
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return set_content_size({ });
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int content_width = 0;
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int column_count = model()->column_count();
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for (int i = 0; i < column_count; ++i)
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content_width += column_width(i) + horizontal_padding() * 2;
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int content_height = item_count() * item_height();
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set_content_size({ content_width, content_height });
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set_size_occupied_by_fixed_elements({ 0, header_height() });
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}
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void GTableView::did_update_model()
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{
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GAbstractView::did_update_model();
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update_content_size();
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update();
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}
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Rect GTableView::content_rect(int row, int column) const
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{
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auto row_rect = this->row_rect(row);
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int x = 0;
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for (int i = 0; i < column; ++i)
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x += column_width(i) + horizontal_padding() * 2;
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return { horizontal_padding() + row_rect.x() + x, row_rect.y(), column_width(column), item_height() };
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}
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Rect GTableView::content_rect(const GModelIndex& index) const
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{
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return content_rect(index.row(), index.column());
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}
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Rect GTableView::row_rect(int item_index) const
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{
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return { 0, header_height() + (item_index * item_height()), max(content_size().width(), width()), item_height() };
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}
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int GTableView::column_width(int column_index) const
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{
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auto& column_data = this->column_data(column_index);
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if (!column_data.has_initialized_width) {
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column_data.has_initialized_width = true;
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column_data.width = model()->column_metadata(column_index).preferred_width;
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}
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return column_data.width;
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}
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Rect GTableView::header_rect(int column_index) const
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{
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if (is_column_hidden(column_index))
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return { };
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int x_offset = 0;
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for (int i = 0; i < column_index; ++i) {
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if (is_column_hidden(i))
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continue;
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x_offset += column_width(i) + horizontal_padding() * 2;
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}
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return { x_offset, 0, column_width(column_index) + horizontal_padding() * 2, header_height() };
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}
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Point GTableView::adjusted_position(const Point& position)
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{
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return position.translated(-frame_thickness(), vertical_scrollbar().value() - frame_thickness());
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}
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Rect GTableView::column_resize_grabbable_rect(int column) const
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{
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auto header_rect = this->header_rect(column);
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return { header_rect.right() - 1, header_rect.top(), 4, header_rect.height() };
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}
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void GTableView::mousedown_event(GMouseEvent& event)
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{
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if (!model())
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return;
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auto adjusted_position = this->adjusted_position(event.position());
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if (event.y() < header_height()) {
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for (int i = 0; i < model()->column_count(); ++i) {
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if (event.button() == GMouseButton::Left) {
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if (column_resize_grabbable_rect(i).contains(adjusted_position)) {
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dbgprintf("now resizing column %d\n", i);
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m_resizing_column = i;
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m_in_column_resize = true;
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m_column_resize_original_width = column_width(i);
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m_column_resize_origin = event.position();
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return;
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}
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}
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auto header_rect = this->header_rect(i);
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if (header_rect.contains(adjusted_position)) {
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auto new_sort_order = GSortOrder::Ascending;
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if (model()->key_column() == i)
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new_sort_order = model()->sort_order() == GSortOrder::Ascending
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? GSortOrder::Descending
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: GSortOrder::Ascending;
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model()->set_key_column_and_sort_order(i, new_sort_order);
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return;
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}
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}
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return;
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}
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if (event.button() == GMouseButton::Left) {
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for (int row = 0, row_count = model()->row_count(); row < row_count; ++row) {
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if (!row_rect(row).contains(adjusted_position))
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continue;
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for (int column = 0, column_count = model()->column_count(); column < column_count; ++column) {
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if (!content_rect(row, column).contains(adjusted_position))
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continue;
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model()->set_selected_index(model()->index(row, column));
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update();
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return;
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}
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}
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model()->set_selected_index({ });
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update();
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}
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}
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void GTableView::mousemove_event(GMouseEvent& event)
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{
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if (m_in_column_resize) {
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auto delta = event.position() - m_column_resize_origin;
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int new_width = m_column_resize_original_width + delta.x();
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auto& column_data = this->column_data(m_resizing_column);
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if (column_data.width != new_width) {
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column_data.width = new_width;
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update();
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}
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return;
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}
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auto adjusted_position = this->adjusted_position(event.position());
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if (event.buttons() == 0) {
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for (int i = 0; i < model()->column_count(); ++i) {
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if (column_resize_grabbable_rect(i).contains(adjusted_position)) {
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window()->set_override_cursor(GStandardCursor::ResizeHorizontal);
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return;
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}
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}
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}
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window()->set_override_cursor(GStandardCursor::None);
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}
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void GTableView::mouseup_event(GMouseEvent& event)
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{
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auto adjusted_position = this->adjusted_position(event.position());
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if (event.button() == GMouseButton::Left) {
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if (!column_resize_grabbable_rect(m_resizing_column).contains(adjusted_position))
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window()->set_override_cursor(GStandardCursor::None);
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m_in_column_resize = false;
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}
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}
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void GTableView::paint_event(GPaintEvent& event)
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{
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GFrame::paint_event(event);
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if (!model())
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return;
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GPainter painter(*this);
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painter.add_clip_rect(frame_inner_rect());
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painter.add_clip_rect(event.rect());
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painter.translate(frame_thickness(), frame_thickness());
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painter.translate(-horizontal_scrollbar().value(), -vertical_scrollbar().value());
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int exposed_width = max(content_size().width(), width());
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int painted_item_index = 0;
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int y_offset = header_height();
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for (int row_index = 0; row_index < model()->row_count(); ++row_index) {
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bool is_selected_row = row_index == model()->selected_index().row();
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int y = y_offset + painted_item_index * item_height();
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Color background_color;
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Color key_column_background_color;
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if (is_selected_row) {
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background_color = is_focused() ? Color::from_rgb(0x84351a) : Color::from_rgb(0x606060);
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key_column_background_color = is_focused() ? Color::from_rgb(0x84351a) : Color::from_rgb(0x606060);
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} else {
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if (alternating_row_colors() && (painted_item_index % 2)) {
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background_color = Color(210, 210, 210);
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key_column_background_color = Color(180, 180, 180);
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} else {
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background_color = Color::White;
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key_column_background_color = Color(210, 210, 210);
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}
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}
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painter.fill_rect(row_rect(painted_item_index), background_color);
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int x_offset = 0;
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for (int column_index = 0; column_index < model()->column_count(); ++column_index) {
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if (is_column_hidden(column_index))
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continue;
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auto column_metadata = model()->column_metadata(column_index);
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int column_width = this->column_width(column_index);
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const Font& font = column_metadata.font ? *column_metadata.font : this->font();
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bool is_key_column = model()->key_column() == column_index;
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Rect cell_rect(horizontal_padding() + x_offset, y, column_width, item_height());
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if (is_key_column) {
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auto cell_rect_for_fill = cell_rect.inflated(horizontal_padding() * 2, 0);
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painter.fill_rect(cell_rect_for_fill, key_column_background_color);
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}
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auto cell_index = model()->index(row_index, column_index);
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auto data = model()->data(cell_index);
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if (data.is_bitmap()) {
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painter.blit(cell_rect.location(), data.as_bitmap(), data.as_bitmap().rect());
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} else if (data.is_icon()) {
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if (auto bitmap = data.as_icon().bitmap_for_size(16))
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painter.blit(cell_rect.location(), *bitmap, bitmap->rect());
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} else {
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Color text_color;
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if (is_selected_row)
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text_color = Color::White;
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else
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text_color = model()->data(cell_index, GModel::Role::ForegroundColor).to_color(Color::Black);
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painter.draw_text(cell_rect, data.to_string(), font, column_metadata.text_alignment, text_color);
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}
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x_offset += column_width + horizontal_padding() * 2;
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}
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++painted_item_index;
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};
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Rect unpainted_rect(0, header_height() + painted_item_index * item_height(), exposed_width, height());
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painter.fill_rect(unpainted_rect, Color::White);
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// Untranslate the painter vertically and do the column headers.
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painter.translate(0, vertical_scrollbar().value());
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if (headers_visible())
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paint_headers(painter);
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}
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void GTableView::paint_headers(Painter& painter)
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{
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int exposed_width = max(content_size().width(), width());
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painter.fill_rect({ 0, 0, exposed_width, header_height() }, Color::LightGray);
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painter.draw_line({ 0, 0 }, { exposed_width - 1, 0 }, Color::White);
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painter.draw_line({ 0, header_height() - 1 }, { exposed_width - 1, header_height() - 1 }, Color::MidGray);
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int x_offset = 0;
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for (int column_index = 0; column_index < model()->column_count(); ++column_index) {
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if (is_column_hidden(column_index))
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continue;
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int column_width = this->column_width(column_index);
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bool is_key_column = model()->key_column() == column_index;
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Rect cell_rect(x_offset, 0, column_width + horizontal_padding() * 2, header_height());
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StylePainter::paint_button(painter, cell_rect, ButtonStyle::Normal, false);
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String text;
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if (is_key_column) {
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StringBuilder builder;
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builder.append(model()->column_name(column_index));
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auto sort_order = model()->sort_order();
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if (sort_order == GSortOrder::Ascending)
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builder.append(" \xf6");
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else if (sort_order == GSortOrder::Descending)
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builder.append(" \xf7");
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text = builder.to_string();
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} else {
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text = model()->column_name(column_index);
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}
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auto text_rect = cell_rect.translated(horizontal_padding(), 0);
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painter.draw_text(text_rect, text, Font::default_bold_font(), TextAlignment::CenterLeft, Color::Black);
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x_offset += column_width + horizontal_padding() * 2;
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}
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}
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int GTableView::item_count() const
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{
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if (!model())
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return 0;
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return model()->row_count();
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}
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void GTableView::keydown_event(GKeyEvent& event)
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{
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if (!model())
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return;
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auto& model = *this->model();
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if (event.key() == KeyCode::Key_Return) {
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model.activate(model.selected_index());
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return;
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}
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if (event.key() == KeyCode::Key_Up) {
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GModelIndex new_index;
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if (model.selected_index().is_valid())
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new_index = model.index(model.selected_index().row() - 1, model.selected_index().column());
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else
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new_index = model.index(0, 0);
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if (model.is_valid(new_index)) {
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model.set_selected_index(new_index);
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scroll_into_view(new_index, Orientation::Vertical);
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update();
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}
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return;
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}
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if (event.key() == KeyCode::Key_Down) {
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GModelIndex new_index;
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if (model.selected_index().is_valid())
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new_index = model.index(model.selected_index().row() + 1, model.selected_index().column());
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else
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new_index = model.index(0, 0);
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if (model.is_valid(new_index)) {
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model.set_selected_index(new_index);
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scroll_into_view(new_index, Orientation::Vertical);
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update();
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}
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return;
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}
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if (event.key() == KeyCode::Key_PageUp) {
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int items_per_page = visible_content_rect().height() / item_height();
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auto new_index = model.index(max(0, model.selected_index().row() - items_per_page), model.selected_index().column());
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if (model.is_valid(new_index)) {
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model.set_selected_index(new_index);
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scroll_into_view(new_index, Orientation::Vertical);
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update();
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}
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return;
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}
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if (event.key() == KeyCode::Key_PageDown) {
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int items_per_page = visible_content_rect().height() / item_height();
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auto new_index = model.index(min(model.row_count() - 1, model.selected_index().row() + items_per_page), model.selected_index().column());
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if (model.is_valid(new_index)) {
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model.set_selected_index(new_index);
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scroll_into_view(new_index, Orientation::Vertical);
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update();
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}
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return;
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}
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return GWidget::keydown_event(event);
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}
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void GTableView::scroll_into_view(const GModelIndex& index, Orientation orientation)
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{
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auto rect = row_rect(index.row()).translated(0, -header_height());
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GScrollableWidget::scroll_into_view(rect, orientation);
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}
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GTableView::ColumnData& GTableView::column_data(int column) const
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{
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ASSERT(model());
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ASSERT(column >= 0 && column < model()->column_count());
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if (column >= m_column_data.size())
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m_column_data.resize(model()->column_count());
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return m_column_data.at(column);
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}
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bool GTableView::is_column_hidden(int column) const
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{
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return !column_data(column).visibility;
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}
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void GTableView::set_column_hidden(int column, bool hidden)
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{
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auto& column_data = this->column_data(column);
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if (column_data.visibility == !hidden)
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return;
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column_data.visibility = !hidden;
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update();
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}
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void GTableView::doubleclick_event(GMouseEvent& event)
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{
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if (!model())
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return;
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auto& model = *this->model();
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if (event.button() == GMouseButton::Left) {
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if (event.y() < header_height())
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return;
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if (model.selected_index().is_valid()) {
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if (is_editable())
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begin_editing(model.selected_index());
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else
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model.activate(model.selected_index());
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}
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}
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}
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void GTableView::leave_event(CEvent&)
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{
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window()->set_override_cursor(GStandardCursor::None);
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}
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