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#include "cutils.hpp"
#include <qobject.h>
#include <QtQuick/QQuickWindow>
#include <QtQuick/QQuickItem>
#include <QtQuick/QQuickItemGrabResult>
#include <QThreadPool>
#include <QQmlEngine>
#include <QDir>
void CUtils::saveItem(QQuickItem* target, const QUrl& path) {
this->saveItem(target, path, QRect(), QJSValue(), QJSValue());
}
void CUtils::saveItem(QQuickItem* target, const QUrl& path, const QRect& rect) {
this->saveItem(target, path, rect, QJSValue(), QJSValue());
}
void CUtils::saveItem(QQuickItem* target, const QUrl& path, QJSValue onSaved) {
this->saveItem(target, path, QRect(), onSaved, QJSValue());
}
void CUtils::saveItem(QQuickItem* target, const QUrl& path, QJSValue onSaved, QJSValue onFailed) {
this->saveItem(target, path, QRect(), onSaved, onFailed);
}
void CUtils::saveItem(QQuickItem* target, const QUrl& path, const QRect& rect, QJSValue onSaved) {
this->saveItem(target, path, rect, onSaved, QJSValue());
}
void CUtils::saveItem(QQuickItem* target, const QUrl& path, const QRect& rect, QJSValue onSaved, QJSValue onFailed) {
if (!target) {
qWarning() << "CUtils::saveItem: a target is required";
return;
}
if (!path.isLocalFile()) {
qWarning() << "CUtils::saveItem:" << path << "is not a local file";
return;
}
auto scaledRect = rect;
if (rect.isValid()) {
qreal scale = target->window()->devicePixelRatio();
scaledRect = QRect(rect.left() * scale, rect.top() * scale, rect.width() * scale, rect.height() * scale);
}
QSharedPointer<QQuickItemGrabResult> grabResult = target->grabToImage();
QObject::connect(grabResult.data(), &QQuickItemGrabResult::ready, this,
[grabResult, scaledRect, path, onSaved, onFailed, this]() {
QThreadPool::globalInstance()->start([grabResult, scaledRect, path, onSaved, onFailed, this] {
QImage image = grabResult->image();
if (scaledRect.isValid()) {
image = image.copy(scaledRect);
}
const QString file = path.toLocalFile();
const QString parent = QFileInfo(file).absolutePath();
bool success = QDir().mkpath(parent) && image.save(file);
QMetaObject::invokeMethod(this, [file, success, path, onSaved, onFailed, this]() {
if (success) {
if (onSaved.isCallable()) {
onSaved.call({ QJSValue(file), qmlEngine(this)->toScriptValue(QVariant::fromValue(path)) });
}
} else {
qWarning() << "CUtils::saveItem: failed to save" << path;
if (onFailed.isCallable()) {
onFailed.call({ qmlEngine(this)->toScriptValue(QVariant::fromValue(path)) });
}
}
}, Qt::QueuedConnection);
});
}
);
}
bool CUtils::copyFile(const QUrl& source, const QUrl& target) const {
return this->copyFile(source, target, true);
}
bool CUtils::copyFile(const QUrl& source, const QUrl& target, bool overwrite) const {
if (!source.isLocalFile()) {
qWarning() << "CUtils::copyFile: source" << source << "is not a local file";
return false;
}
if (!target.isLocalFile()) {
qWarning() << "CUtils::copyFile: target" << target << "is not a local file";
return false;
}
if (overwrite) {
QFile::remove(target.toLocalFile());
}
return QFile::copy(source.toLocalFile(), target.toLocalFile());
}
void CUtils::getDominantColour(QQuickItem* item, QJSValue callback) const {
this->getDominantColour(item, 128, 128, callback);
}
void CUtils::getDominantColour(QQuickItem* item, int targetWidth, int targetHeight, QJSValue callback) const {
if (!item) {
qWarning() << "CUtils::getDominantColour: an item is required";
return;
}
if (!item->window()) {
// Fail silently to avoid warning
return;
}
QSharedPointer<QQuickItemGrabResult> grabResult = item->grabToImage();
QObject::connect(grabResult.data(), &QQuickItemGrabResult::ready, this,
[grabResult, item, targetWidth, targetHeight, callback, this]() {
QImage image = grabResult->image();
if (image.width() > targetWidth && image.height() > targetHeight) {
image = image.scaled(targetWidth, targetHeight);
} else if (image.width() > targetWidth) {
image = image.scaledToWidth(targetWidth);
} else if (image.height() > targetHeight) {
image = image.scaledToHeight(targetHeight);
}
if (image.format() != QImage::Format_ARGB32) {
image = image.convertToFormat(QImage::Format_ARGB32);
}
std::unordered_map<uint32_t, int> colours;
const uchar* data = image.bits();
int width = image.width();
int height = image.height();
int bytesPerLine = image.bytesPerLine();
for (int y = 0; y < height; ++y) {
const uchar* line = data + y * bytesPerLine;
for (int x = 0; x < width; ++x) {
const uchar* pixel = line + x * 4;
uchar r = pixel[0];
uchar g = pixel[1];
uchar b = pixel[2];
uchar a = pixel[3];
if (a == 0) {
continue;
}
r &= 0xF8;
g &= 0xF8;
b &= 0xF8;
uint32_t colour = (r << 16) | (g << 8) | b;
++colours[colour];
}
}
uint32_t dominantColour = 0;
int maxCount = 0;
for (const auto& [colour, count] : colours) {
if (count > maxCount) {
dominantColour = colour;
maxCount = count;
}
}
const QColor colour = QColor((0xFF << 24) | dominantColour);
if (callback.isCallable()) {
QMetaObject::invokeMethod(item, [item, callback, colour, this]() {
callback.call({ qmlEngine(this)->toScriptValue(QVariant::fromValue(colour)) });
}, Qt::QueuedConnection);
}
}
);
}
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