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// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qandroidplatformfileiconengine.h"
#ifndef QT_NO_ICON
#include "androidjnimain.h"
#include <QtCore/qdebug.h>
#include <QtCore/qjniobject.h>
#include <QtCore/qloggingcategory.h>
#include <QtCore/qscopeguard.h>
#include <android/bitmap.h>
QT_BEGIN_NAMESPACE
Q_STATIC_LOGGING_CATEGORY(lcAndroidFileIconEngine, "qt.qpa.theme.fileiconengine")
using namespace Qt::StringLiterals;
using namespace QtJniTypes;
Q_DECLARE_JNI_CLASS(CharSequence, "java/lang/CharSequence")
Q_DECLARE_JNI_CLASS(Icon, "android/graphics/drawable/Icon")
Q_DECLARE_JNI_CLASS(Bitmap, "android/graphics/Bitmap")
Q_DECLARE_JNI_CLASS(Canvas, "android/graphics/Canvas")
Q_DECLARE_JNI_CLASS(MimeTypeMap, "android/webkit/MimeTypeMap")
Q_DECLARE_JNI_CLASS(MimeTypeInfo, "android/content/ContentResolver$MimeTypeInfo")
QAndroidPlatformFileIconEngine::QAndroidPlatformFileIconEngine(const QFileInfo &fileInfo,
QPlatformTheme::IconOptions opts)
: QAbstractFileIconEngine(fileInfo, opts)
{
// MimeTypeInfo requires API level 29
static bool hasMimeTypeInfo = []{
if (!MimeTypeInfo::isClassAvailable()) {
qCWarning(lcAndroidFileIconEngine) << "MimeTypeInfo not available, requires API level 29";
return false;
}
return true;
}();
if (!hasMimeTypeInfo)
return;
const auto context = QtAndroidPrivate::context();
if (!context.isValid()) {
qCWarning(lcAndroidFileIconEngine) << "Couldn't get context";
return;
}
const auto contentResolver = context.callMethod<ContentResolver>("getContentResolver");
if (!contentResolver.isValid()) {
qCWarning(lcAndroidFileIconEngine) << "Couldn't get content resolver";
return;
}
const auto mimeTypeMap = MimeTypeMap::callStaticMethod<MimeTypeMap>("getSingleton");
const QString mimeType = mimeTypeMap.callMethod<QString>("getMimeTypeFromExtension",
fileInfo.suffix());
const auto mimeTypeInfo = contentResolver.callMethod<MimeTypeInfo>("getTypeInfo", mimeType);
qCDebug(lcAndroidFileIconEngine) << "MimeTypeInfo" << mimeType
<< mimeTypeInfo.callMethod<CharSequence>("getLabel").toString()
<< mimeTypeInfo.callMethod<CharSequence>("getContentDescription").toString();
const auto icon = mimeTypeInfo.callMethod<Icon>("getIcon");
if (!icon.isValid()) {
qCDebug(lcAndroidFileIconEngine) << "No valid icon in type info";
return;
}
m_drawable = icon.callMethod<Drawable>("loadDrawable", context);
if (!m_drawable || !m_drawable->isValid())
qCWarning(lcAndroidFileIconEngine) << "Failed to load drawable for icon";
}
QAndroidPlatformFileIconEngine::~QAndroidPlatformFileIconEngine() = default;
bool QAndroidPlatformFileIconEngine::isNull()
{
return !m_drawable || !m_drawable->isValid();
}
QPixmap QAndroidPlatformFileIconEngine::filePixmap(const QSize &size, QIcon::Mode, QIcon::State)
{
if (m_pixmap.size() == size)
return m_pixmap;
if (isNull())
return QPixmap();
JNIEnv *jniEnv = QJniEnvironment::getJniEnv();
// createBitmap doesn't support ARGB32, but it doesn't matter here
Bitmap bitmap = QtAndroid::createBitmap(size.width(), size.height(),
QImage::Format_RGBA8888, jniEnv);
Canvas canvas(bitmap);
m_drawable->callMethod("setBounds", 0, 0, size.width(), size.height());
m_drawable->callMethod("draw", canvas);
void *pixels = nullptr;
if (ANDROID_BITMAP_RESULT_SUCCESS != AndroidBitmap_lockPixels(jniEnv, bitmap.object(), &pixels)) {
qCWarning(lcAndroidFileIconEngine) << "Failed to lock bitmap pixels";
return QPixmap();
}
// this makes a deep copy of the pixel data
m_pixmap = QPixmap::fromImage(QImage(reinterpret_cast<const uchar *>(pixels),
size.width(), size.height(), QImage::Format_RGBA8888));
if (ANDROID_BITMAP_RESULT_SUCCESS != AndroidBitmap_unlockPixels(jniEnv, bitmap.object()))
qCWarning(lcAndroidFileIconEngine) << "Failed to unlock bitmap pixels";
return m_pixmap;
}
QT_END_NAMESPACE
#endif // QT_NO_ICON
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