mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-12-03 21:10:30 +00:00
0d46c27741
This fixes a bug where we would construct a ModelIndex with a pointer to NonnullRefPtr<OutlineItem>, instead of a pointer to the underlying OutlineItem, which caused a crash later on when we would try to dereference that pointer.
137 lines
4 KiB
C++
137 lines
4 KiB
C++
/*
|
|
* Copyright (c) 2021, Matthew Olsson <mattco@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include "OutlineModel.h"
|
|
#include <AK/Assertions.h>
|
|
#include <LibGUI/ModelRole.h>
|
|
#include <LibGfx/Font/FontDatabase.h>
|
|
#include <LibGfx/TextAlignment.h>
|
|
#include <LibPDF/Document.h>
|
|
|
|
enum Columns {
|
|
Page,
|
|
Title,
|
|
_Count
|
|
};
|
|
|
|
ErrorOr<NonnullRefPtr<OutlineModel>> OutlineModel::create(NonnullRefPtr<PDF::OutlineDict> const& outline)
|
|
{
|
|
auto outline_model = adopt_ref(*new OutlineModel(outline));
|
|
outline_model->m_closed_item_icon.set_bitmap_for_size(16, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/book.png"sv)));
|
|
outline_model->m_open_item_icon.set_bitmap_for_size(16, TRY(Gfx::Bitmap::load_from_file("/res/icons/16x16/book-open.png"sv)));
|
|
return outline_model;
|
|
}
|
|
|
|
OutlineModel::OutlineModel(NonnullRefPtr<PDF::OutlineDict> const& outline)
|
|
: m_outline(outline)
|
|
{
|
|
}
|
|
|
|
void OutlineModel::set_index_open_state(const GUI::ModelIndex& index, bool is_open)
|
|
{
|
|
VERIFY(index.is_valid());
|
|
auto* outline_item = static_cast<PDF::OutlineItem*>(index.internal_data());
|
|
|
|
if (is_open) {
|
|
m_open_outline_items.set(outline_item);
|
|
} else {
|
|
m_open_outline_items.remove(outline_item);
|
|
}
|
|
}
|
|
|
|
int OutlineModel::row_count(const GUI::ModelIndex& index) const
|
|
{
|
|
if (!index.is_valid())
|
|
return m_outline->children.size();
|
|
auto outline_item = static_cast<PDF::OutlineItem*>(index.internal_data());
|
|
return static_cast<int>(outline_item->children.size());
|
|
}
|
|
|
|
int OutlineModel::tree_column() const
|
|
{
|
|
return Columns::Title;
|
|
}
|
|
|
|
int OutlineModel::column_count(const GUI::ModelIndex&) const
|
|
{
|
|
return Columns::_Count;
|
|
}
|
|
|
|
PDF::Destination const& OutlineModel::get_destination(GUI::ModelIndex const& index)
|
|
{
|
|
auto* outline_item = static_cast<PDF::OutlineItem*>(index.internal_data());
|
|
return outline_item->dest;
|
|
}
|
|
|
|
GUI::Variant OutlineModel::data(const GUI::ModelIndex& index, GUI::ModelRole role) const
|
|
{
|
|
VERIFY(index.is_valid());
|
|
auto outline_item = static_cast<PDF::OutlineItem*>(index.internal_data());
|
|
|
|
switch (role) {
|
|
case GUI::ModelRole::Display:
|
|
switch (index.column()) {
|
|
case Columns::Title:
|
|
return outline_item->title;
|
|
case Columns::Page: {
|
|
auto maybe_page_number = outline_item->dest.page;
|
|
if (maybe_page_number.has_value()) {
|
|
return maybe_page_number.release_value();
|
|
}
|
|
return {};
|
|
}
|
|
default:
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
case GUI::ModelRole::Icon:
|
|
if (m_open_outline_items.contains(outline_item))
|
|
return m_open_item_icon;
|
|
return m_closed_item_icon;
|
|
default:
|
|
return {};
|
|
|
|
case GUI::ModelRole::TextAlignment:
|
|
switch (index.column()) {
|
|
case Columns::Title:
|
|
return Gfx::TextAlignment::CenterLeft;
|
|
case Columns::Page:
|
|
return Gfx::TextAlignment::CenterRight;
|
|
default:
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
}
|
|
}
|
|
|
|
GUI::ModelIndex OutlineModel::parent_index(const GUI::ModelIndex& index) const
|
|
{
|
|
if (!index.is_valid())
|
|
return {};
|
|
|
|
auto* outline_item = static_cast<PDF::OutlineItem*>(index.internal_data());
|
|
auto& parent = outline_item->parent;
|
|
|
|
if (!parent)
|
|
return {};
|
|
|
|
Vector<NonnullRefPtr<PDF::OutlineItem>> parent_siblings = (parent->parent ? parent->parent->children : m_outline->children);
|
|
for (size_t i = 0; i < parent_siblings.size(); i++) {
|
|
auto* parent_sibling = parent_siblings[i].ptr();
|
|
if (parent_sibling == parent.ptr())
|
|
return create_index(static_cast<int>(i), index.column(), parent.ptr());
|
|
}
|
|
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
GUI::ModelIndex OutlineModel::index(int row, int column, const GUI::ModelIndex& parent) const
|
|
{
|
|
if (!parent.is_valid())
|
|
return create_index(row, column, m_outline->children[row].ptr());
|
|
|
|
auto parent_outline_item = static_cast<PDF::OutlineItem*>(parent.internal_data());
|
|
return create_index(row, column, parent_outline_item->children[row].ptr());
|
|
}
|