Merge pull request #2034 from jroweboy/loading-widget

QT Frontend: Add a Loading screen with progressbar

1 files changed, 84 insertions, 0 deletions

diff --git a/src/yuzu/loading_screen.cpp b/src/yuzu/loading_screen.cpp
new file mode 100644
index 000000000..0f3c4bb6c
--- /dev/null
+++ b/src/yuzu/loading_screen.cpp
@@ -0,0 +1,84 @@
+// Copyright 2019 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <QBuffer>
+#include <QByteArray>
+#include <QHBoxLayout>
+#include <QIODevice>
+#include <QImage>
+#include <QLabel>
+#include <QPainter>
+#include <QPalette>
+#include <QPixmap>
+#include <QProgressBar>
+#include <QStyleOption>
+#include <QWindow>
+#include "common/logging/log.h"
+#include "core/loader/loader.h"
+#include "ui_loading_screen.h"
+#include "yuzu/loading_screen.h"
+
+// Mingw seems to not have QMovie at all. If QMovie is missing then use a single frame instead of an
+// showing the full animation
+#if !YUZU_QT_MOVIE_MISSING
+#include <QMovie>
+#endif
+
+LoadingScreen::LoadingScreen(QWidget* parent)
+    : QWidget(parent), ui(std::make_unique<Ui::LoadingScreen>()) {
+    ui->setupUi(this);
+    // Progress bar is hidden until we have a use for it.
+    ui->progress_bar->hide();
+}
+
+LoadingScreen::~LoadingScreen() = default;
+
+void LoadingScreen::Prepare(Loader::AppLoader& loader) {
+    std::vector<u8> buffer;
+    if (loader.ReadBanner(buffer) == Loader::ResultStatus::Success) {
+#ifdef YUZU_QT_MOVIE_MISSING
+        QPixmap map;
+        map.loadFromData(buffer.data(), buffer.size());
+        ui->banner->setPixmap(map);
+#else
+        backing_mem =
+            std::make_unique<QByteArray>(reinterpret_cast<char*>(buffer.data()), buffer.size());
+        backing_buf = std::make_unique<QBuffer>(backing_mem.get());
+        backing_buf->open(QIODevice::ReadOnly);
+        animation = std::make_unique<QMovie>(backing_buf.get(), QByteArray("GIF"));
+        animation->start();
+        ui->banner->setMovie(animation.get());
+#endif
+        buffer.clear();
+    }
+    if (loader.ReadLogo(buffer) == Loader::ResultStatus::Success) {
+        QPixmap map;
+        map.loadFromData(buffer.data(), buffer.size());
+        ui->logo->setPixmap(map);
+    }
+}
+
+void LoadingScreen::OnLoadProgress(std::size_t value, std::size_t total) {
+    if (total != previous_total) {
+        ui->progress_bar->setMaximum(total);
+        previous_total = total;
+    }
+    ui->progress_bar->setValue(value);
+}
+
+void LoadingScreen::paintEvent(QPaintEvent* event) {
+    QStyleOption opt;
+    opt.init(this);
+    QPainter p(this);
+    style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
+    QWidget::paintEvent(event);
+}
+
+void LoadingScreen::Clear() {
+#ifndef YUZU_QT_MOVIE_MISSING
+    animation.reset();
+    backing_buf.reset();
+    backing_mem.reset();
+#endif
+}