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ladybird/Userland/Libraries/LibGUI/TableView.cpp
Ali Mohammad Pur 5e1499d104 Everywhere: Rename {Deprecated => Byte}String 
This commit un-deprecates DeprecatedString, and repurposes it as a byte
string.
As the null state has already been removed, there are no other
particularly hairy blockers in repurposing this type as a byte string
(what it _really_ is).

This commit is auto-generated:
  $ xs=$(ack -l \bDeprecatedString\b\|deprecated_string AK Userland \
    Meta Ports Ladybird Tests Kernel)
  $ perl -pie 's/\bDeprecatedString\b/ByteString/g;
    s/deprecated_string/byte_string/g' $xs
  $ clang-format --style=file -i \
    $(git diff --name-only | grep \.cpp\|\.h)
  $ gn format $(git ls-files '*.gn' '*.gni')
2023-12-17 18:25:10 +03:30

337 lines
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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, Glenford Williams <gw_dev@outlook.com>
* Copyright (c) 2022, the SerenityOS developers.
* Copyright (c) 2022, networkException <networkexception@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/StringBuilder.h>
#include <LibGUI/Action.h>
#include <LibGUI/HeaderView.h>
#include <LibGUI/Menu.h>
#include <LibGUI/Model.h>
#include <LibGUI/ModelEditingDelegate.h>
#include <LibGUI/Painter.h>
#include <LibGUI/TableView.h>
#include <LibGUI/Window.h>
#include <LibGfx/Palette.h>
REGISTER_WIDGET(GUI, TableView)
namespace GUI {
TableView::TableView()
{
set_fill_with_background_color(true);
set_background_role(ColorRole::Base);
set_foreground_role(ColorRole::BaseText);
}
void TableView::paint_event(PaintEvent& event)
{
Color widget_background_color = palette().color(background_role());
Frame::paint_event(event);
Painter painter(*this);
painter.add_clip_rect(frame_inner_rect());
painter.add_clip_rect(event.rect());
if (fill_with_background_color())
painter.fill_rect(event.rect(), widget_background_color);
painter.translate(frame_thickness(), frame_thickness());
painter.translate(-horizontal_scrollbar().value(), -vertical_scrollbar().value());
if (!model())
return;
auto selection_color = is_focused() ? palette().selection() : palette().inactive_selection();
int exposed_width = max(content_size().width(), width());
int x_offset = row_header().is_visible() ? row_header().width() : 0;
int y_offset = column_header().is_visible() ? column_header().height() : 0;
bool dummy;
int first_visible_row = index_at_event_position(frame_inner_rect().top_left().translated(x_offset, y_offset), dummy).row();
int last_visible_row = index_at_event_position(frame_inner_rect().bottom_right().translated(-1).translated(x_offset, y_offset), dummy).row();
if (first_visible_row == -1)
first_visible_row = 0;
if (last_visible_row == -1)
last_visible_row = model()->row_count() - 1;
int painted_item_index = first_visible_row;
for (int row_index = first_visible_row; row_index <= last_visible_row; ++row_index) {
bool is_selected_row = selection().contains_row(row_index);
int y = y_offset + painted_item_index * row_height();
Color background_color;
Color key_column_background_color;
if (is_selected_row && highlight_selected_rows()) {
background_color = selection_color;
key_column_background_color = selection_color;
} else {
if (alternating_row_colors() && (painted_item_index % 2)) {
background_color = widget_background_color.darkened(0.8f);
key_column_background_color = widget_background_color.darkened(0.7f);
} else {
background_color = widget_background_color;
key_column_background_color = widget_background_color.darkened(0.9f);
}
}
auto row_rect = this->row_rect(painted_item_index);
painter.fill_rect(row_rect, background_color);
int x = x_offset;
for (int column_index = 0; column_index < model()->column_count(); ++column_index) {
if (!column_header().is_section_visible(column_index))
continue;
int column_width = this->column_width(column_index);
bool is_key_column = m_key_column == column_index;
Gfx::IntRect cell_rect(horizontal_padding() + x, y, column_width, row_height());
auto cell_rect_for_fill = cell_rect.inflated(horizontal_padding() * 2, 0);
if (is_key_column && is_key_column_highlighted())
painter.fill_rect(cell_rect_for_fill, key_column_background_color);
auto cell_index = model()->index(row_index, column_index);
auto* delegate = column_painting_delegate(column_index);
if (delegate && delegate->should_paint(cell_index)) {
delegate->paint(painter, cell_rect, palette(), cell_index);
} else {
auto data = cell_index.data();
if (data.is_bitmap()) {
auto cell_constrained_bitmap_rect = data.as_bitmap().rect();
if (data.as_bitmap().rect().width() > column_width)
cell_constrained_bitmap_rect.set_width(column_width);
if (data.as_bitmap().rect().height() > row_height())
cell_constrained_bitmap_rect.set_height(row_height());
cell_rect.set_y(cell_rect.y() + (row_height() - cell_constrained_bitmap_rect.height()) / 2);
cell_rect.set_x(cell_rect.x() + (column_width - cell_constrained_bitmap_rect.width()) / 2);
painter.blit(cell_rect.location(), data.as_bitmap(), cell_constrained_bitmap_rect);
} else if (data.is_icon()) {
if (auto bitmap = data.as_icon().bitmap_for_size(16)) {
cell_rect.set_y(cell_rect.y() + (row_height() - bitmap->height()) / 2);
if (is_selected_row) {
auto tint = selection_color.with_alpha(100);
painter.blit_filtered(cell_rect.location(), *bitmap, bitmap->rect(), [&](auto src) { return src.blend(tint); });
} else if (m_hovered_index.is_valid() && cell_index.row() == m_hovered_index.row()) {
painter.blit_brightened(cell_rect.location(), *bitmap, bitmap->rect());
} else {
auto opacity = cell_index.data(ModelRole::IconOpacity).as_float_or(1.0f);
painter.blit(cell_rect.location(), *bitmap, bitmap->rect(), opacity);
}
}
} else {
if (!is_selected_row) {
auto cell_background_color = cell_index.data(ModelRole::BackgroundColor);
if (cell_background_color.is_valid())
painter.fill_rect(cell_rect_for_fill, cell_background_color.to_color(background_color));
}
auto text_alignment = cell_index.data(ModelRole::TextAlignment).to_text_alignment(Gfx::TextAlignment::CenterLeft);
draw_item_text(painter, cell_index, is_selected_row, cell_rect, data.to_byte_string(), font_for_index(cell_index), text_alignment, Gfx::TextElision::Right);
}
}
if (m_grid_style == GridStyle::Horizontal || m_grid_style == GridStyle::Both)
painter.draw_line(cell_rect_for_fill.bottom_left().moved_up(1), cell_rect_for_fill.bottom_right().translated(-1), palette().ruler());
if (m_grid_style == GridStyle::Vertical || m_grid_style == GridStyle::Both)
painter.draw_line(cell_rect_for_fill.top_right().moved_left(1), cell_rect_for_fill.bottom_right().translated(-1), palette().ruler());
if (selection_behavior() == SelectionBehavior::SelectItems && cell_index == cursor_index())
painter.draw_rect(cell_rect_for_fill, palette().text_cursor());
x += column_width + horizontal_padding() * 2;
}
if (is_focused() && selection_behavior() == SelectionBehavior::SelectRows && row_index == cursor_index().row()) {
painter.draw_rect(row_rect, widget_background_color);
painter.draw_focus_rect(row_rect, palette().focus_outline());
}
if (has_pending_drop() && selection_behavior() == SelectionBehavior::SelectRows && row_index == drop_candidate_index().row()) {
painter.draw_rect(row_rect, palette().selection(), true);
}
++painted_item_index;
};
Gfx::IntRect unpainted_rect(0, column_header().height() + painted_item_index * row_height(), exposed_width, height());
if (fill_with_background_color())
painter.fill_rect(unpainted_rect, widget_background_color);
}
void TableView::second_paint_event(PaintEvent& event)
{
if (!m_rubber_banding)
return;
Painter painter(*this);
painter.add_clip_rect(event.rect());
painter.add_clip_rect(widget_inner_rect());
// The rubber band rect always borders the widget inner to the left and right
auto rubber_band_left = widget_inner_rect().left();
auto rubber_band_right = widget_inner_rect().right();
auto rubber_band_rect = Gfx::IntRect::from_two_points({ rubber_band_left, m_rubber_band_origin }, { rubber_band_right, m_rubber_band_current });
painter.fill_rect(rubber_band_rect, palette().rubber_band_fill());
painter.draw_rect(rubber_band_rect, palette().rubber_band_border());
}
void TableView::keydown_event(KeyEvent& event)
{
if (!model())
return AbstractTableView::keydown_event(event);
AbstractTableView::keydown_event(event);
if (event.is_accepted())
return;
auto is_delete = event.key() == Key_Delete;
auto is_backspace = event.key() == Key_Backspace;
auto is_clear = is_delete || is_backspace;
auto is_control_character = is_ascii_c0_control(event.code_point());
if (is_editable() && edit_triggers() & EditTrigger::AnyKeyPressed && !event.ctrl() && (!is_control_character || is_clear)) {
begin_editing(cursor_index());
if (m_editing_delegate) {
if (is_delete) {
if (selection().size() > 1) {
selection().for_each_index([&](GUI::ModelIndex& index) {
begin_editing(index);
m_editing_delegate->set_value(GUI::Variant {});
});
} else {
m_editing_delegate->set_value(GUI::Variant {});
}
} else if (is_backspace) {
m_editing_delegate->set_value(ByteString::empty());
} else {
m_editing_delegate->set_value(event.text(), ModelEditingDelegate::SelectionBehavior::DoNotSelect);
}
}
}
}
void TableView::mousedown_event(MouseEvent& event)
{
AbstractTableView::mousedown_event(event);
if (!model())
return;
if (event.button() != MouseButton::Primary)
return;
if (m_might_drag)
return;
if (selection_mode() == SelectionMode::MultiSelection) {
m_rubber_banding = true;
m_rubber_band_origin = event.position().y();
m_rubber_band_current = event.position().y();
}
}
void TableView::mouseup_event(MouseEvent& event)
{
AbstractTableView::mouseup_event(event);
if (m_rubber_banding && event.button() == MouseButton::Primary) {
m_rubber_banding = false;
update();
}
}
void TableView::mousemove_event(MouseEvent& event)
{
if (m_rubber_banding) {
// The rubber band rect cannot go outside the bounds of the rect enclosing all rows
m_rubber_band_current = clamp(event.position().y(), widget_inner_rect().top() + column_header().height(), widget_inner_rect().bottom());
int row_count = model()->row_count();
clear_selection();
set_suppress_update_on_selection_change(true);
for (int row = 0; row < row_count; ++row) {
auto index = model()->index(row);
VERIFY(index.is_valid());
int row_top = row * row_height() + column_header().height();
int row_bottom = row * row_height() + row_height() + column_header().height();
if ((m_rubber_band_origin > row_top && m_rubber_band_current < row_top) || (m_rubber_band_origin > row_bottom && m_rubber_band_current < row_bottom)) {
add_selection(index);
}
}
set_suppress_update_on_selection_change(false);
update();
}
AbstractTableView::mousemove_event(event);
}
void TableView::move_cursor(CursorMovement movement, SelectionUpdate selection_update)
{
if (!model())
return;
auto& model = *this->model();
switch (movement) {
case CursorMovement::Left:
move_cursor_relative(0, -1, selection_update);
break;
case CursorMovement::Right:
move_cursor_relative(0, 1, selection_update);
break;
case CursorMovement::Up:
move_cursor_relative(-1, 0, selection_update);
break;
case CursorMovement::Down:
move_cursor_relative(1, 0, selection_update);
break;
case CursorMovement::Home: {
auto index = model.index(0, 0);
set_cursor(index, selection_update);
break;
}
case CursorMovement::End: {
auto index = model.index(model.row_count() - 1, 0);
set_cursor(index, selection_update);
break;
}
case CursorMovement::PageUp: {
int items_per_page = visible_content_rect().height() / row_height();
auto old_index = selection().first();
auto new_index = model.index(max(0, old_index.row() - items_per_page), old_index.column());
if (model.is_within_range(new_index))
set_cursor(new_index, selection_update);
break;
}
case CursorMovement::PageDown: {
int items_per_page = visible_content_rect().height() / row_height();
auto old_index = selection().first();
auto new_index = model.index(min(model.row_count() - 1, old_index.row() + items_per_page), old_index.column());
if (model.is_within_range(new_index))
set_cursor(new_index, selection_update);
break;
}
}
}
void TableView::set_grid_style(GridStyle style)
{
if (m_grid_style == style)
return;
m_grid_style = style;
update();
}
}
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