Show desktop avatar originals with five centered previews

tools/chatgui/src/avatars/avatargallery.cpp

@@ -0,0 +1,69 @@
+#include "avatargallery.h"
+#include "avatarmanager.h"
+#include "../imageviewer_window.h"
+#include <QDialog>
+#include <QHBoxLayout>
+#include <QLabel>
+#include <QPointer>
+#include <QPushButton>
+#include <QShortcut>
+#include <QVBoxLayout>
+
+namespace {
+class Gallery : public QDialog {
+public:
+    explicit Gallery(AvatarManager* source) : manager(source) {
+        setAttribute(Qt::WA_DeleteOnClose); resize(850,720); setWindowTitle(tr("Avatars"));
+        auto* layout = new QVBoxLayout(this); viewer = new ImageViewerWindow(this); layout->addWidget(viewer,1);
+        status = new QLabel(this); status->setAlignment(Qt::AlignCenter); layout->addWidget(status);
+        auto* strip = new QHBoxLayout; strip->addStretch(); previous = new QPushButton("←",this); strip->addWidget(previous);
+        for (int i=0;i<5;i++) {
+            previews[i] = new QPushButton(this); previews[i]->setFixedSize(64,64); previews[i]->setIconSize({56,56});
+            if (i==2) previews[i]->setStyleSheet("border: 2px solid #77aaff;");
+            strip->addWidget(previews[i]); connect(previews[i], &QPushButton::clicked, this, [this,i] { move(i-2); });
+        }
+        next = new QPushButton("→",this); strip->addWidget(next); strip->addStretch(); layout->addLayout(strip);
+        connect(previous, &QPushButton::clicked, this, [this] { move(-1); });
+        connect(next, &QPushButton::clicked, this, [this] { move(1); });
+        connect(new QShortcut(QKeySequence(Qt::Key_Left),this), &QShortcut::activated, this, [this] { move(-1); });
+        connect(new QShortcut(QKeySequence(Qt::Key_Right),this), &QShortcut::activated, this, [this] { move(1); });
+        connect(viewer, &ImageViewerWindow::closed, this, &QDialog::close);
+        connect(manager, &AvatarManager::galleryChanged, this, [this] { refresh(); });
+        connect(manager, &AvatarManager::galleryError, status, &QLabel::setText);
+        connect(manager, &QObject::destroyed, this, &QDialog::close);
+        auto* timer = new QTimer(this); timer->setInterval(2000); connect(timer,&QTimer::timeout,this,[this] { refresh(); }); timer->start();
+    }
+    ~Gallery() override { if (manager) manager->closeGallery(); }
+    void move(int delta) {
+        if (!manager) return;
+        const auto files=manager->gallery(); const int index=files.indexOf(selected)+delta;
+        if (index<0 || index>=files.size()) return;
+        selected=files[index]; displayed=0; refresh();
+    }
+    void refresh() {
+        if (!manager) return;
+        const auto files=manager->gallery(); if (selected.isEmpty()) selected=manager->galleryCurrent();
+        const int index=files.indexOf(selected); previous->setEnabled(index>0); next->setEnabled(index>=0 && index+1<files.size());
+        if (index<0) return;
+        QImage image=manager->galleryImage(selected,true);
+        const bool full=!image.isNull(); if (!full) image=manager->galleryImage(selected);
+        if (image.cacheKey()!=displayed) { viewer->loadImage(image); displayed=image.cacheKey(); }
+        if (full) status->setText(QString("%1 / %2").arg(index+1).arg(files.size()));
+        else if (!image.isNull()) status->setText(tr("Loading original…"));
+        for (int i=0;i<5;i++) {
+            const int item=index+i-2; const bool valid=item>=0 && item<files.size(); previews[i]->setEnabled(valid);
+            previews[i]->setIcon(valid ? QIcon(QPixmap::fromImage(manager->galleryImage(files[item]))) : QIcon());
+        }
+    }
+private:
+    QPointer<AvatarManager> manager; ImageViewerWindow* viewer; QLabel* status;
+    QPushButton *previews[5], *previous, *next; QString selected; qint64 displayed=0;
+};
+QPointer<Gallery> active;
+}
+
+void showAvatarGallery(const QString& channel, quint64 owner) {
+    auto* manager=AvatarManager::instance(); if (!manager) return;
+    if (active) { delete active.data(); active=nullptr; }
+    active=new Gallery(manager); active->show(); manager->openGallery(channel,owner);
+}

tools/chatgui/src/avatars/avatargallery.h

@@ -0,0 +1,5 @@
+/* Одна галерея пользователя на аккаунт; источник и передачи принадлежат AvatarManager. */
+#pragma once
+#include <QString>
+#include <QtGlobal>
+void showAvatarGallery(const QString& channel, quint64 owner);