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Reimplement search for GridImageModel

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Nicolas Werner 2023-05-19 22:05:14 +02:00
parent 3a0f38d7e9
commit 777bf9f9f6
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GPG key ID: C8D75E610773F2D9
2 changed files with 148 additions and 25 deletions
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117
src/GridImagePackModel.cpp
View file

@ -4,11 +4,12 @@
#include "GridImagePackModel.h"
#include "Cache_p.h"
#include "CompletionModelRoles.h"
#include <QTextBoundaryFinder>
#include <algorithm>
#include "Cache_p.h"
Q_DECLARE_METATYPE(StickerImage)
GridImagePackModel::GridImagePackModel(const std::string &roomId, bool stickers, QObject *parent)
@ -38,12 +39,52 @@ GridImagePackModel::GridImagePackModel(const std::string &roomId, bool stickers,
rowToPack.push_back(packs.size());
packs.push_back(std::move(newPack));
}
// prepare search index
auto insertParts = [this](const QString &str, std::pair<std::uint32_t, std::uint32_t> id) {
QTextBoundaryFinder finder(QTextBoundaryFinder::BoundaryType::Word, str);
finder.toStart();
do {
auto start = finder.position();
finder.toNextBoundary();
auto end = finder.position();
auto ref = str.midRef(start, end - start).trimmed();
if (!ref.isEmpty())
trie_.insert<ElementRank::second>(ref.toUcs4(), id);
} while (finder.position() < str.size());
};
std::uint32_t packIndex = 0;
for (const auto &pack : packs) {
std::uint32_t imgIndex = 0;
for (const auto &img : pack.images) {
std::pair<std::uint32_t, std::uint32_t> key{packIndex, imgIndex};
QString string1 = img.second.toCaseFolded();
QString string2 = QString::fromStdString(img.first.body).toCaseFolded();
if (!string1.isEmpty()) {
trie_.insert<ElementRank::first>(string1.toUcs4(), key);
insertParts(string1, key);
}
if (!string2.isEmpty()) {
trie_.insert<ElementRank::first>(string2.toUcs4(), key);
insertParts(string2, key);
}
imgIndex++;
}
packIndex++;
}
}
int
GridImagePackModel::rowCount(const QModelIndex &) const
{
return (int)rowToPack.size();
return static_cast<int>(searchString_.isEmpty() ? rowToPack.size()
: rowToFirstRowEntryFromSearch.size());
}
QHash<int, QByteArray>
@ -59,6 +100,7 @@ QVariant
GridImagePackModel::data(const QModelIndex &index, int role) const
{
if (index.row() < rowCount() && index.row() >= 0) {
if (searchString_.isEmpty()) {
const auto &pack = packs[rowToPack[index.row()]];
switch (role) {
case Roles::PackName:
@ -66,8 +108,8 @@ GridImagePackModel::data(const QModelIndex &index, int role) const
case Roles::Row: {
std::size_t offset = static_cast<std::size_t>(index.row()) - pack.firstRow;
QList<StickerImage> imgs;
auto endOffset = std::min((offset + 1) * 3, pack.images.size());
for (std::size_t img = offset * 3; img < endOffset; img++) {
auto endOffset = std::min((offset + 1) * columns, pack.images.size());
for (std::size_t img = offset * columns; img < endOffset; img++) {
const auto &data = pack.images.at(img);
imgs.push_back({.url = QString::fromStdString(data.first.url),
.shortcode = data.second,
@ -83,6 +125,71 @@ GridImagePackModel::data(const QModelIndex &index, int role) const
default:
return {};
}
} else {
if (static_cast<size_t>(index.row()) >= rowToFirstRowEntryFromSearch.size())
return {};
const auto firstIndex = rowToFirstRowEntryFromSearch[index.row()];
const auto firstEntry = currentSearchResult[firstIndex];
const auto &pack = packs[firstEntry.first];
switch (role) {
case Roles::PackName:
return pack.packname;
case Roles::Row: {
QList<StickerImage> imgs;
for (auto img = firstIndex;
imgs.size() < columns && img < currentSearchResult.size() &&
currentSearchResult[img].first == firstEntry.first;
img++) {
const auto &data = pack.images.at(currentSearchResult[img].second);
imgs.push_back({.url = QString::fromStdString(data.first.url),
.shortcode = data.second,
.body = QString::fromStdString(data.first.body),
.descriptor_ = std::vector{
pack.room_id,
pack.state_key,
data.second.toStdString(),
}});
}
return QVariant::fromValue(imgs);
}
default:
return {};
}
}
}
return {};
}
void
GridImagePackModel::setSearchString(QString key)
{
beginResetModel();
currentSearchResult.clear();
rowToFirstRowEntryFromSearch.clear();
searchString_ = key;
if (!key.isEmpty()) {
auto searchParts = key.toCaseFolded().toUcs4();
auto tempResults =
trie_.search(searchParts, static_cast<std::size_t>(columns * columns * 4));
std::ranges::sort(tempResults);
currentSearchResult = std::move(tempResults);
std::size_t lastPack = -1;
int columnIndex = 0;
for (std::size_t i = 0; i < currentSearchResult.size(); i++) {
auto elem = currentSearchResult[i];
if (elem.first != lastPack || columnIndex == columns) {
columnIndex = 0;
lastPack = elem.first;
rowToFirstRowEntryFromSearch.push_back(i);
}
columnIndex++;
}
}
endResetModel();
emit newSearchString();
}

16
src/GridImagePackModel.h
View file

@ -5,11 +5,14 @@
#pragma once
#include <QAbstractListModel>
#include <QMultiMap>
#include <QObject>
#include <QString>
#include <mtx/events/mscs/image_packs.hpp>
#include "CompletionProxyModel.h"
struct StickerImage
{
Q_GADGET
@ -41,6 +44,8 @@ public:
class GridImagePackModel final : public QAbstractListModel
{
Q_OBJECT
Q_PROPERTY(QString searchString READ searchString WRITE setSearchString NOTIFY newSearchString)
public:
enum Roles
{
@ -53,6 +58,12 @@ public:
int rowCount(const QModelIndex &parent = QModelIndex()) const override;
QVariant data(const QModelIndex &index, int role) const override;
QString searchString() const { return searchString_; }
void setSearchString(QString newValue);
signals:
void newSearchString();
private:
std::string room_id;
@ -69,4 +80,9 @@ private:
std::vector<PackDesc> packs;
std::vector<size_t> rowToPack;
int columns = 3;
QString searchString_;
trie<uint, std::pair<std::uint32_t, std::uint32_t>> trie_;
std::vector<std::pair<std::uint32_t, std::uint32_t>> currentSearchResult;
std::vector<std::size_t> rowToFirstRowEntryFromSearch;
};