cab032f1ee
This necessitates switching from passing a single code point to the callback to passing a non-const Utf8CodePointIterator instead. Note that the text selection mechanisms in LibGUI and LibWeb don't handle this properly yet; they still assume that each code point renders as one glyph. Similarly, width calculations for text widths don't either, so a single such an emoji will require space for more than one glyph. It also doesn't work in LibVT's TerminalWidget, where each code point is handled and rendered separately, so LibGfx never gets a chance to check if subsequent code points could result in a combined emoji.
804 lines
24 KiB
C++
804 lines
24 KiB
C++
/*
|
|
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/Debug.h>
|
|
#include <AK/StringBuilder.h>
|
|
#include <AK/Utf8View.h>
|
|
#include <LibCore/Timer.h>
|
|
#include <LibGUI/AbstractView.h>
|
|
#include <LibGUI/DragOperation.h>
|
|
#include <LibGUI/Model.h>
|
|
#include <LibGUI/ModelEditingDelegate.h>
|
|
#include <LibGUI/Painter.h>
|
|
#include <LibGUI/Scrollbar.h>
|
|
#include <LibGUI/TextBox.h>
|
|
#include <LibGfx/Palette.h>
|
|
|
|
namespace GUI {
|
|
|
|
AbstractView::AbstractView()
|
|
: m_sort_order(SortOrder::Ascending)
|
|
, m_selection(*this)
|
|
{
|
|
REGISTER_BOOL_PROPERTY("activates_on_selection", activates_on_selection, set_activates_on_selection);
|
|
|
|
set_focus_policy(GUI::FocusPolicy::StrongFocus);
|
|
}
|
|
|
|
AbstractView::~AbstractView()
|
|
{
|
|
if (m_highlighted_search_timer)
|
|
m_highlighted_search_timer->stop();
|
|
if (m_model)
|
|
m_model->unregister_view({}, *this);
|
|
}
|
|
|
|
void AbstractView::set_model(RefPtr<Model> model)
|
|
{
|
|
if (model == m_model)
|
|
return;
|
|
if (m_model)
|
|
m_model->unregister_view({}, *this);
|
|
m_model = move(model);
|
|
if (m_model)
|
|
m_model->register_view({}, *this);
|
|
model_did_update(GUI::Model::InvalidateAllIndices);
|
|
scroll_to_top();
|
|
}
|
|
|
|
void AbstractView::model_did_update(unsigned int flags)
|
|
{
|
|
if (!model() || (flags & GUI::Model::InvalidateAllIndices)) {
|
|
stop_editing();
|
|
m_edit_index = {};
|
|
m_hovered_index = {};
|
|
m_cursor_index = {};
|
|
m_drop_candidate_index = {};
|
|
clear_selection();
|
|
} else {
|
|
// FIXME: These may no longer point to whatever they did before,
|
|
// but let's be optimistic until we can be sure about it.
|
|
if (!model()->is_within_range(m_edit_index)) {
|
|
stop_editing();
|
|
m_edit_index = {};
|
|
}
|
|
if (!model()->is_within_range(m_hovered_index))
|
|
m_hovered_index = {};
|
|
if (!model()->is_within_range(m_cursor_index))
|
|
m_cursor_index = {};
|
|
if (!model()->is_within_range(m_drop_candidate_index))
|
|
m_drop_candidate_index = {};
|
|
selection().remove_all_matching([this](auto& index) { return !model()->is_within_range(index); });
|
|
|
|
auto index = find_next_search_match(m_highlighted_search.view());
|
|
if (index.is_valid())
|
|
highlight_search(index);
|
|
}
|
|
m_selection_start_index = {};
|
|
}
|
|
|
|
void AbstractView::clear_selection()
|
|
{
|
|
m_selection.clear();
|
|
}
|
|
|
|
void AbstractView::set_selection(ModelIndex const& new_index)
|
|
{
|
|
m_selection.set(new_index);
|
|
}
|
|
|
|
void AbstractView::set_selection_start_index(ModelIndex const& new_index)
|
|
{
|
|
m_selection_start_index = new_index;
|
|
}
|
|
|
|
void AbstractView::add_selection(ModelIndex const& new_index)
|
|
{
|
|
m_selection.add(new_index);
|
|
}
|
|
|
|
void AbstractView::remove_selection(ModelIndex const& new_index)
|
|
{
|
|
m_selection.remove(new_index);
|
|
}
|
|
|
|
void AbstractView::toggle_selection(ModelIndex const& new_index)
|
|
{
|
|
m_selection.toggle(new_index);
|
|
}
|
|
|
|
void AbstractView::did_update_selection()
|
|
{
|
|
if (!model() || selection().first() != m_edit_index)
|
|
stop_editing();
|
|
if (model() && on_selection_change)
|
|
on_selection_change();
|
|
}
|
|
|
|
void AbstractView::did_scroll()
|
|
{
|
|
update_edit_widget_position();
|
|
}
|
|
|
|
void AbstractView::update_edit_widget_position()
|
|
{
|
|
if (!m_edit_widget)
|
|
return;
|
|
m_edit_widget->set_relative_rect(m_edit_widget_content_rect.translated(-horizontal_scrollbar().value(), -vertical_scrollbar().value()));
|
|
}
|
|
|
|
void AbstractView::begin_editing(ModelIndex const& index)
|
|
{
|
|
VERIFY(is_editable());
|
|
VERIFY(model());
|
|
if (m_edit_index == index)
|
|
return;
|
|
if (!model()->is_editable(index))
|
|
return;
|
|
if (m_edit_widget) {
|
|
remove_child(*m_edit_widget);
|
|
m_edit_widget = nullptr;
|
|
}
|
|
m_edit_index = index;
|
|
|
|
VERIFY(aid_create_editing_delegate);
|
|
m_editing_delegate = aid_create_editing_delegate(index);
|
|
m_editing_delegate->bind(*model(), index);
|
|
m_editing_delegate->set_value(index.data());
|
|
m_edit_widget = m_editing_delegate->widget();
|
|
add_child(*m_edit_widget);
|
|
m_edit_widget->move_to_back();
|
|
m_edit_widget_content_rect = editing_rect(index).translated(frame_thickness(), frame_thickness());
|
|
update_edit_widget_position();
|
|
m_edit_widget->set_focus(true);
|
|
m_editing_delegate->will_begin_editing();
|
|
m_editing_delegate->on_commit = [this] {
|
|
VERIFY(model());
|
|
model()->set_data(m_edit_index, m_editing_delegate->value());
|
|
stop_editing();
|
|
};
|
|
m_editing_delegate->on_rollback = [this] {
|
|
VERIFY(model());
|
|
stop_editing();
|
|
};
|
|
m_editing_delegate->on_change = [this, index] {
|
|
editing_widget_did_change(index);
|
|
};
|
|
}
|
|
|
|
void AbstractView::stop_editing()
|
|
{
|
|
bool take_back_focus = false;
|
|
m_edit_index = {};
|
|
if (m_edit_widget) {
|
|
take_back_focus = m_edit_widget->is_focused();
|
|
remove_child(*m_edit_widget);
|
|
m_edit_widget = nullptr;
|
|
}
|
|
if (take_back_focus)
|
|
set_focus(true);
|
|
}
|
|
|
|
void AbstractView::activate(ModelIndex const& index)
|
|
{
|
|
if (on_activation)
|
|
on_activation(index);
|
|
}
|
|
|
|
void AbstractView::activate_selected()
|
|
{
|
|
if (!on_activation)
|
|
return;
|
|
|
|
selection().for_each_index([this](auto& index) {
|
|
on_activation(index);
|
|
});
|
|
}
|
|
|
|
void AbstractView::notify_selection_changed(Badge<ModelSelection>)
|
|
{
|
|
did_update_selection();
|
|
if (!m_suppress_update_on_selection_change)
|
|
update();
|
|
}
|
|
|
|
NonnullRefPtr<Gfx::Font> AbstractView::font_for_index(ModelIndex const& index) const
|
|
{
|
|
if (!model())
|
|
return font();
|
|
|
|
auto font_data = index.data(ModelRole::Font);
|
|
if (font_data.is_font())
|
|
return font_data.as_font();
|
|
|
|
return font();
|
|
}
|
|
|
|
void AbstractView::mousedown_event(MouseEvent& event)
|
|
{
|
|
AbstractScrollableWidget::mousedown_event(event);
|
|
|
|
if (!model())
|
|
return;
|
|
|
|
if (event.button() == MouseButton::Primary)
|
|
m_left_mousedown_position = event.position();
|
|
|
|
auto index = index_at_event_position(event.position());
|
|
m_might_drag = false;
|
|
|
|
if (!index.is_valid()) {
|
|
clear_selection();
|
|
} else if (event.modifiers() & Mod_Ctrl) {
|
|
set_cursor(index, SelectionUpdate::Ctrl);
|
|
} else if (event.modifiers() & Mod_Shift) {
|
|
set_cursor(index, SelectionUpdate::Shift);
|
|
} else if (event.button() == MouseButton::Primary && m_selection.contains(index) && !m_model->drag_data_type().is_null()) {
|
|
// We might be starting a drag, so don't throw away other selected items yet.
|
|
m_might_drag = true;
|
|
} else if (event.button() == MouseButton::Secondary) {
|
|
set_cursor(index, SelectionUpdate::ClearIfNotSelected);
|
|
} else {
|
|
set_cursor(index, SelectionUpdate::Set);
|
|
m_might_drag = true;
|
|
}
|
|
|
|
update();
|
|
}
|
|
|
|
void AbstractView::set_hovered_index(ModelIndex const& index)
|
|
{
|
|
if (m_hovered_index == index)
|
|
return;
|
|
auto old_index = m_hovered_index;
|
|
m_hovered_index = index;
|
|
did_change_hovered_index(old_index, index);
|
|
|
|
if (old_index.is_valid())
|
|
update(to_widget_rect(paint_invalidation_rect(old_index)));
|
|
|
|
if (index.is_valid())
|
|
update(to_widget_rect(paint_invalidation_rect(index)));
|
|
}
|
|
|
|
void AbstractView::leave_event(Core::Event& event)
|
|
{
|
|
AbstractScrollableWidget::leave_event(event);
|
|
set_hovered_index({});
|
|
}
|
|
|
|
void AbstractView::mousemove_event(MouseEvent& event)
|
|
{
|
|
if (!model())
|
|
return AbstractScrollableWidget::mousemove_event(event);
|
|
|
|
auto hovered_index = index_at_event_position(event.position());
|
|
set_hovered_index(hovered_index);
|
|
|
|
auto data_type = m_model->drag_data_type();
|
|
if (data_type.is_null())
|
|
return AbstractScrollableWidget::mousemove_event(event);
|
|
|
|
if (!m_might_drag)
|
|
return AbstractScrollableWidget::mousemove_event(event);
|
|
|
|
if (!(event.buttons() & MouseButton::Primary) || m_selection.is_empty()) {
|
|
m_might_drag = false;
|
|
return AbstractScrollableWidget::mousemove_event(event);
|
|
}
|
|
|
|
auto diff = event.position() - m_left_mousedown_position;
|
|
auto distance_travelled_squared = diff.x() * diff.x() + diff.y() * diff.y();
|
|
constexpr int drag_distance_threshold = 5;
|
|
|
|
if (distance_travelled_squared <= drag_distance_threshold)
|
|
return AbstractScrollableWidget::mousemove_event(event);
|
|
|
|
VERIFY(!data_type.is_null());
|
|
|
|
if (m_is_dragging)
|
|
return;
|
|
|
|
// An event might sneak in between us constructing the drag operation and the
|
|
// event loop exec at the end of `drag_operation->exec()' if the user is fast enough.
|
|
// Prevent this by just ignoring later drag initiations (until the current drag operation ends).
|
|
TemporaryChange dragging { m_is_dragging, true };
|
|
|
|
dbgln_if(DRAG_DEBUG, "Initiate drag!");
|
|
auto drag_operation = DragOperation::construct();
|
|
|
|
drag_operation->set_mime_data(m_model->mime_data(m_selection));
|
|
|
|
auto outcome = drag_operation->exec();
|
|
|
|
switch (outcome) {
|
|
case DragOperation::Outcome::Accepted:
|
|
dbgln_if(DRAG_DEBUG, "Drag was accepted!");
|
|
break;
|
|
case DragOperation::Outcome::Cancelled:
|
|
dbgln_if(DRAG_DEBUG, "Drag was cancelled!");
|
|
m_might_drag = false;
|
|
break;
|
|
default:
|
|
VERIFY_NOT_REACHED();
|
|
break;
|
|
}
|
|
}
|
|
|
|
void AbstractView::mouseup_event(MouseEvent& event)
|
|
{
|
|
AbstractScrollableWidget::mouseup_event(event);
|
|
|
|
if (!model())
|
|
return;
|
|
|
|
set_automatic_scrolling_timer(false);
|
|
|
|
if (m_might_drag) {
|
|
// We were unsure about unselecting items other than the current one
|
|
// in mousedown_event(), because we could be seeing a start of a drag.
|
|
// Since we're here, it was not that; so fix up the selection now.
|
|
auto index = index_at_event_position(event.position());
|
|
if (index.is_valid()) {
|
|
set_selection(index);
|
|
set_selection_start_index(index);
|
|
} else
|
|
clear_selection();
|
|
m_might_drag = false;
|
|
update();
|
|
}
|
|
|
|
if (activates_on_selection())
|
|
activate_selected();
|
|
}
|
|
|
|
void AbstractView::doubleclick_event(MouseEvent& event)
|
|
{
|
|
if (!model())
|
|
return;
|
|
|
|
if (event.button() != MouseButton::Primary)
|
|
return;
|
|
|
|
m_might_drag = false;
|
|
|
|
auto index = index_at_event_position(event.position());
|
|
|
|
if (!index.is_valid()) {
|
|
clear_selection();
|
|
return;
|
|
}
|
|
|
|
if (!m_selection.contains(index))
|
|
set_selection(index);
|
|
|
|
if (is_editable() && edit_triggers() & EditTrigger::DoubleClicked)
|
|
begin_editing(cursor_index());
|
|
else
|
|
activate(cursor_index());
|
|
}
|
|
|
|
void AbstractView::context_menu_event(ContextMenuEvent& event)
|
|
{
|
|
if (!model())
|
|
return;
|
|
|
|
auto index = index_at_event_position(event.position());
|
|
|
|
if (index.is_valid())
|
|
add_selection(index);
|
|
else
|
|
clear_selection();
|
|
|
|
if (on_context_menu_request)
|
|
on_context_menu_request(index, event);
|
|
}
|
|
|
|
void AbstractView::drop_event(DropEvent& event)
|
|
{
|
|
event.accept();
|
|
|
|
if (!model())
|
|
return;
|
|
|
|
auto index = index_at_event_position(event.position());
|
|
if (on_drop)
|
|
on_drop(index, event);
|
|
}
|
|
|
|
void AbstractView::set_selection_mode(SelectionMode selection_mode)
|
|
{
|
|
if (m_selection_mode == selection_mode)
|
|
return;
|
|
m_selection_mode = selection_mode;
|
|
|
|
if (m_selection_mode == SelectionMode::NoSelection)
|
|
m_selection.clear();
|
|
else if (m_selection_mode != SelectionMode::SingleSelection && m_selection.size() > 1) {
|
|
auto first_selected = m_selection.first();
|
|
m_selection.clear();
|
|
m_selection.set(first_selected);
|
|
}
|
|
|
|
update();
|
|
}
|
|
|
|
void AbstractView::set_key_column_and_sort_order(int column, SortOrder sort_order)
|
|
{
|
|
m_key_column = column;
|
|
m_sort_order = sort_order;
|
|
|
|
if (model())
|
|
model()->sort(column, sort_order);
|
|
|
|
update();
|
|
}
|
|
|
|
void AbstractView::set_cursor(ModelIndex index, SelectionUpdate selection_update, bool scroll_cursor_into_view)
|
|
{
|
|
if (!model() || !index.is_valid() || selection_mode() == SelectionMode::NoSelection) {
|
|
m_cursor_index = {};
|
|
stop_highlighted_search_timer();
|
|
return;
|
|
}
|
|
|
|
if (!m_cursor_index.is_valid() || model()->parent_index(m_cursor_index) != model()->parent_index(index))
|
|
stop_highlighted_search_timer();
|
|
|
|
if (selection_mode() == SelectionMode::SingleSelection && (selection_update == SelectionUpdate::Ctrl || selection_update == SelectionUpdate::Shift))
|
|
selection_update = SelectionUpdate::Set;
|
|
|
|
if (model()->is_within_range(index)) {
|
|
if (selection_update == SelectionUpdate::Set) {
|
|
set_selection(index);
|
|
set_selection_start_index(index);
|
|
} else if (selection_update == SelectionUpdate::Ctrl) {
|
|
toggle_selection(index);
|
|
} else if (selection_update == SelectionUpdate::ClearIfNotSelected) {
|
|
if (!m_selection.contains(index))
|
|
clear_selection();
|
|
} else if (selection_update == SelectionUpdate::Shift) {
|
|
auto min_row = min(selection_start_index().row(), index.row());
|
|
auto max_row = max(selection_start_index().row(), index.row());
|
|
auto min_column = min(selection_start_index().column(), index.column());
|
|
auto max_column = max(selection_start_index().column(), index.column());
|
|
|
|
clear_selection();
|
|
for (auto row = min_row; row <= max_row; ++row) {
|
|
for (auto column = min_column; column <= max_column; ++column) {
|
|
auto new_index = model()->index(row, column);
|
|
if (new_index.is_valid())
|
|
toggle_selection(new_index);
|
|
}
|
|
}
|
|
}
|
|
|
|
// FIXME: Support the other SelectionUpdate types
|
|
|
|
auto old_cursor_index = m_cursor_index;
|
|
m_cursor_index = index;
|
|
did_change_cursor_index(old_cursor_index, m_cursor_index);
|
|
|
|
if (scroll_cursor_into_view)
|
|
scroll_into_view(index, true, true);
|
|
update();
|
|
}
|
|
}
|
|
|
|
void AbstractView::set_edit_triggers(unsigned triggers)
|
|
{
|
|
m_edit_triggers = triggers;
|
|
}
|
|
|
|
void AbstractView::hide_event(HideEvent& event)
|
|
{
|
|
stop_editing();
|
|
AbstractScrollableWidget::hide_event(event);
|
|
}
|
|
|
|
void AbstractView::keydown_event(KeyEvent& event)
|
|
{
|
|
if (event.alt()) {
|
|
event.ignore();
|
|
return;
|
|
}
|
|
|
|
if (event.key() == KeyCode::Key_F2) {
|
|
if (is_editable() && edit_triggers() & EditTrigger::EditKeyPressed) {
|
|
begin_editing(cursor_index());
|
|
event.accept();
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (event.key() == KeyCode::Key_Return) {
|
|
activate_selected();
|
|
event.accept();
|
|
return;
|
|
}
|
|
|
|
SelectionUpdate selection_update = SelectionUpdate::Set;
|
|
if (event.modifiers() == KeyModifier::Mod_Shift) {
|
|
selection_update = SelectionUpdate::Shift;
|
|
}
|
|
|
|
if (event.key() == KeyCode::Key_Left) {
|
|
move_cursor(CursorMovement::Left, selection_update);
|
|
event.accept();
|
|
return;
|
|
}
|
|
if (event.key() == KeyCode::Key_Right) {
|
|
move_cursor(CursorMovement::Right, selection_update);
|
|
event.accept();
|
|
return;
|
|
}
|
|
if (event.key() == KeyCode::Key_Up) {
|
|
move_cursor(CursorMovement::Up, selection_update);
|
|
event.accept();
|
|
return;
|
|
}
|
|
if (event.key() == KeyCode::Key_Down) {
|
|
move_cursor(CursorMovement::Down, selection_update);
|
|
event.accept();
|
|
return;
|
|
}
|
|
if (event.key() == KeyCode::Key_Home) {
|
|
move_cursor(CursorMovement::Home, selection_update);
|
|
event.accept();
|
|
return;
|
|
}
|
|
if (event.key() == KeyCode::Key_End) {
|
|
move_cursor(CursorMovement::End, selection_update);
|
|
event.accept();
|
|
return;
|
|
}
|
|
if (event.key() == KeyCode::Key_PageUp) {
|
|
move_cursor(CursorMovement::PageUp, selection_update);
|
|
event.accept();
|
|
return;
|
|
}
|
|
if (event.key() == KeyCode::Key_PageDown) {
|
|
move_cursor(CursorMovement::PageDown, selection_update);
|
|
event.accept();
|
|
return;
|
|
}
|
|
|
|
if (is_searchable()) {
|
|
if (event.key() == KeyCode::Key_Backspace) {
|
|
if (!m_highlighted_search.is_null()) {
|
|
// if (event.modifiers() == Mod_Ctrl) {
|
|
// TODO: delete last word
|
|
// }
|
|
Utf8View view(m_highlighted_search);
|
|
size_t n_code_points = view.length();
|
|
if (n_code_points > 1) {
|
|
n_code_points--;
|
|
StringBuilder sb;
|
|
for (auto it = view.begin(); it != view.end(); ++it) {
|
|
if (n_code_points == 0)
|
|
break;
|
|
n_code_points--;
|
|
sb.append_code_point(*it);
|
|
}
|
|
auto index = find_next_search_match(sb.string_view());
|
|
if (index.is_valid()) {
|
|
m_highlighted_search = sb.to_string();
|
|
highlight_search(index);
|
|
start_highlighted_search_timer();
|
|
}
|
|
} else {
|
|
stop_highlighted_search_timer();
|
|
}
|
|
|
|
event.accept();
|
|
return;
|
|
}
|
|
} else if (event.key() == KeyCode::Key_Escape) {
|
|
if (!m_highlighted_search.is_null()) {
|
|
stop_highlighted_search_timer();
|
|
|
|
event.accept();
|
|
return;
|
|
}
|
|
} else if (event.key() != KeyCode::Key_Tab && !event.ctrl() && !event.alt() && event.code_point() != 0) {
|
|
StringBuilder sb;
|
|
sb.append(m_highlighted_search);
|
|
sb.append_code_point(event.code_point());
|
|
|
|
auto index = find_next_search_match(sb.string_view());
|
|
if (index.is_valid()) {
|
|
m_highlighted_search = sb.to_string();
|
|
highlight_search(index);
|
|
start_highlighted_search_timer();
|
|
}
|
|
|
|
event.accept();
|
|
return;
|
|
}
|
|
}
|
|
|
|
AbstractScrollableWidget::keydown_event(event);
|
|
}
|
|
|
|
void AbstractView::stop_highlighted_search_timer()
|
|
{
|
|
m_highlighted_search = nullptr;
|
|
if (m_highlighted_search_timer)
|
|
m_highlighted_search_timer->stop();
|
|
if (m_highlighted_search_index.is_valid()) {
|
|
m_highlighted_search_index = {};
|
|
update();
|
|
}
|
|
}
|
|
|
|
void AbstractView::start_highlighted_search_timer()
|
|
{
|
|
if (!m_highlighted_search_timer) {
|
|
m_highlighted_search_timer = add<Core::Timer>();
|
|
m_highlighted_search_timer->set_single_shot(true);
|
|
m_highlighted_search_timer->on_timeout = [this] {
|
|
stop_highlighted_search_timer();
|
|
};
|
|
}
|
|
m_highlighted_search_timer->set_interval(5 * 1000);
|
|
m_highlighted_search_timer->restart();
|
|
}
|
|
|
|
ModelIndex AbstractView::find_next_search_match(StringView const search)
|
|
{
|
|
if (search.is_empty())
|
|
return {};
|
|
|
|
auto found_indices = model()->matches(search, Model::MatchesFlag::FirstMatchOnly | Model::MatchesFlag::MatchAtStart | Model::MatchesFlag::CaseInsensitive, model()->parent_index(cursor_index()));
|
|
|
|
if (found_indices.is_empty())
|
|
return {};
|
|
|
|
return found_indices[0];
|
|
}
|
|
|
|
void AbstractView::highlight_search(ModelIndex const index)
|
|
{
|
|
m_highlighted_search_index = index;
|
|
set_selection(index);
|
|
scroll_into_view(index);
|
|
update();
|
|
}
|
|
|
|
bool AbstractView::is_searchable() const
|
|
{
|
|
if (!m_searchable || !model())
|
|
return false;
|
|
return model()->is_searchable();
|
|
}
|
|
|
|
void AbstractView::set_searchable(bool searchable)
|
|
{
|
|
if (m_searchable == searchable)
|
|
return;
|
|
m_searchable = searchable;
|
|
if (!m_searchable)
|
|
stop_highlighted_search_timer();
|
|
}
|
|
|
|
void AbstractView::draw_item_text(Gfx::Painter& painter, ModelIndex const& index, bool is_selected, Gfx::IntRect const& text_rect, StringView item_text, Gfx::Font const& font, Gfx::TextAlignment alignment, Gfx::TextElision elision, size_t search_highlighting_offset)
|
|
{
|
|
if (m_edit_index == index)
|
|
return;
|
|
|
|
Color text_color;
|
|
if (is_selected)
|
|
text_color = is_focused() ? palette().selection_text() : palette().inactive_selection_text();
|
|
else
|
|
text_color = index.data(ModelRole::ForegroundColor).to_color(palette().color(foreground_role()));
|
|
if (index == m_highlighted_search_index) {
|
|
Utf8View searching_text(m_highlighted_search);
|
|
auto searching_length = searching_text.length();
|
|
if (searching_length > search_highlighting_offset)
|
|
searching_length -= search_highlighting_offset;
|
|
else if (search_highlighting_offset > 0)
|
|
searching_length = 0;
|
|
|
|
// Highlight the text background first
|
|
auto background_searching_length = searching_length;
|
|
painter.draw_text([&](Gfx::IntRect const& rect, Utf8CodePointIterator&) {
|
|
if (background_searching_length > 0) {
|
|
background_searching_length--;
|
|
painter.fill_rect(rect.inflated(0, 2), palette().highlight_searching());
|
|
}
|
|
},
|
|
text_rect, item_text, font, alignment, elision);
|
|
|
|
// Then draw the text
|
|
auto text_searching_length = searching_length;
|
|
auto highlight_text_color = palette().highlight_searching_text();
|
|
searching_length = searching_text.length();
|
|
painter.draw_text([&](Gfx::IntRect const& rect, Utf8CodePointIterator& it) {
|
|
if (text_searching_length > 0) {
|
|
text_searching_length--;
|
|
painter.draw_glyph_or_emoji(rect.location(), it, font, highlight_text_color);
|
|
} else {
|
|
painter.draw_glyph_or_emoji(rect.location(), it, font, text_color);
|
|
}
|
|
},
|
|
text_rect, item_text, font, alignment, elision);
|
|
} else {
|
|
if (m_draw_item_text_with_shadow) {
|
|
painter.draw_text(text_rect.translated(1, 1), item_text, font, alignment, Color::Black, elision);
|
|
painter.draw_text(text_rect, item_text, font, alignment, Color::White, elision);
|
|
} else {
|
|
painter.draw_text(text_rect, item_text, font, alignment, text_color, elision);
|
|
}
|
|
}
|
|
}
|
|
|
|
void AbstractView::focusin_event(FocusEvent& event)
|
|
{
|
|
AbstractScrollableWidget::focusin_event(event);
|
|
|
|
if (model() && !cursor_index().is_valid()) {
|
|
move_cursor(CursorMovement::Home, SelectionUpdate::None);
|
|
clear_selection();
|
|
}
|
|
}
|
|
|
|
void AbstractView::drag_enter_event(DragEvent& event)
|
|
{
|
|
if (!model())
|
|
return;
|
|
// NOTE: Right now, AbstractView always accepts drags since we won't get "drag move" events
|
|
// unless we accept the "drag enter" event.
|
|
// We might be able to reduce event traffic by communicating the set of drag-accepting
|
|
// rects in this widget to the windowing system somehow.
|
|
event.accept();
|
|
dbgln_if(DRAG_DEBUG, "accepting drag of {}", event.mime_types().first());
|
|
}
|
|
|
|
void AbstractView::drag_move_event(DragEvent& event)
|
|
{
|
|
if (!model())
|
|
return;
|
|
|
|
auto index = index_at_event_position(event.position());
|
|
ModelIndex new_drop_candidate_index;
|
|
bool acceptable = model()->accepts_drag(index, event.mime_types());
|
|
|
|
if (acceptable && index.is_valid())
|
|
new_drop_candidate_index = index;
|
|
|
|
if (acceptable) {
|
|
m_automatic_scroll_delta = automatic_scroll_delta_from_position(event.position());
|
|
set_automatic_scrolling_timer(!m_automatic_scroll_delta.is_null());
|
|
}
|
|
|
|
if (m_drop_candidate_index != new_drop_candidate_index) {
|
|
m_drop_candidate_index = new_drop_candidate_index;
|
|
update();
|
|
}
|
|
if (m_drop_candidate_index.is_valid())
|
|
event.accept();
|
|
}
|
|
|
|
void AbstractView::drag_leave_event(Event&)
|
|
{
|
|
if (m_drop_candidate_index.is_valid()) {
|
|
m_drop_candidate_index = {};
|
|
update();
|
|
}
|
|
|
|
set_automatic_scrolling_timer(false);
|
|
}
|
|
|
|
void AbstractView::on_automatic_scrolling_timer_fired()
|
|
{
|
|
if (m_automatic_scroll_delta.is_null())
|
|
return;
|
|
|
|
vertical_scrollbar().increase_slider_by(m_automatic_scroll_delta.y());
|
|
horizontal_scrollbar().increase_slider_by(m_automatic_scroll_delta.x());
|
|
}
|
|
|
|
}
|