265 lines
9.0 KiB
C++
265 lines
9.0 KiB
C++
#include "library/ResourceLibraryDock.h"
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#include "core/library/EntityJson.h"
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#include "core/library/ToolJson.h"
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#include <QApplication>
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#include <QDrag>
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#include <QJsonArray>
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#include <QJsonDocument>
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#include <QListWidget>
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#include <QMimeData>
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#include <QPainter>
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#include <QVBoxLayout>
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#include <QWidget>
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#include <QScrollBar>
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#include <algorithm>
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namespace gui {
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namespace {
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constexpr const char* kMimeType = "application/x-hfut-resource+json";
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QPixmap makePreviewPixmap(const core::library::LibraryResource& r) {
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const QSize sz = r.imageSize.isValid() ? r.imageSize : QSize(200, 200);
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QImage img(sz, QImage::Format_ARGB32_Premultiplied);
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img.fill(Qt::transparent);
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QPainter p(&img);
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p.setRenderHint(QPainter::Antialiasing, true);
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QRectF rr(QPointF(0, 0), QSizeF(sz));
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rr = rr.adjusted(10, 10, -10, -10);
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p.setPen(QPen(QColor(0, 0, 0, 50), 2));
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p.setBrush(QBrush(r.accent));
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p.drawRoundedRect(rr, 18, 18);
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p.setPen(QColor(255, 255, 255, 240));
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QFont f = p.font();
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f.setPointSize(std::max(9, f.pointSize()));
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f.setBold(true);
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p.setFont(f);
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p.drawText(rr.adjusted(12, 12, -12, -12), Qt::AlignLeft | Qt::AlignTop, r.displayName);
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return QPixmap::fromImage(img);
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}
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class ResourceListWidget final : public QListWidget {
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public:
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explicit ResourceListWidget(QWidget* parent = nullptr) : QListWidget(parent) {
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setSelectionMode(QAbstractItemView::SingleSelection);
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setDragEnabled(true);
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setDragDropMode(QAbstractItemView::DragOnly);
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setDefaultDropAction(Qt::CopyAction);
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setUniformItemSizes(false);
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setSpacing(6);
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setViewMode(QListView::IconMode);
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setResizeMode(QListView::Adjust);
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// 注意：Static 会让拖拽“完全没反应”（不会启动 drag）。
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// 这里用 Free，仍然不会在列表内部重排（DragOnly），但允许拖出到画布。
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setMovement(QListView::Free);
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setIconSize(QSize(96, 96));
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setWordWrap(true);
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// “一行两个资源”：用网格尺寸 + 固定列宽近似实现
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setGridSize(QSize(180, 140));
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}
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void setResources(const QVector<core::library::LibraryResource>& r) { m_resources = r; }
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protected:
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void startDrag(Qt::DropActions supportedActions) override {
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Q_UNUSED(supportedActions);
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auto* item = currentItem();
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if (!item) {
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return;
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}
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bool ok = false;
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const int idx = item->data(Qt::UserRole).toInt(&ok);
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if (!ok || idx < 0 || idx >= m_resources.size()) {
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return;
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}
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const auto& res = m_resources[idx];
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QJsonObject payload;
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payload.insert(QStringLiteral("resourceId"), res.resourceId);
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payload.insert(QStringLiteral("displayName"), res.displayName);
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payload.insert(QStringLiteral("kind"), res.kind == core::library::LibraryResource::Kind::Tool ? QStringLiteral("tool")
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: QStringLiteral("entity"));
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if (res.kind == core::library::LibraryResource::Kind::Tool) {
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payload.insert(QStringLiteral("tool"), core::library::toolToJson(res.toolTemplate));
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} else {
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payload.insert(QStringLiteral("entity"), core::library::entityToJson(res.entityTemplate));
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}
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{
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QJsonArray a;
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a.append(res.imageSize.width());
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a.append(res.imageSize.height());
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payload.insert(QStringLiteral("imageSize"), a);
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}
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{
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QJsonArray a;
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a.append(res.accent.red());
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a.append(res.accent.green());
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a.append(res.accent.blue());
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a.append(res.accent.alpha());
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payload.insert(QStringLiteral("accent"), a);
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}
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{
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QJsonArray a;
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a.append(res.imageOffsetFromOrigin.x());
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a.append(res.imageOffsetFromOrigin.y());
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payload.insert(QStringLiteral("imageOffsetFromOrigin"), a);
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}
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const QByteArray bytes = QJsonDocument(payload).toJson(QJsonDocument::Compact);
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auto* mime = new QMimeData();
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mime->setData(QString::fromUtf8(kMimeType), bytes);
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auto* drag = new QDrag(this);
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drag->setMimeData(mime);
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drag->setPixmap(item->icon().pixmap(iconSize()));
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drag->setHotSpot(QPoint(iconSize().width() / 2, iconSize().height() / 2));
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drag->exec(Qt::CopyAction);
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}
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private:
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QVector<core::library::LibraryResource> m_resources;
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};
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} // namespace
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ResourceLibraryDock::ResourceLibraryDock(QWidget* parent)
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: QDockWidget(QStringLiteral("资源库"), parent) {
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setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
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setFeatures(QDockWidget::DockWidgetMovable | QDockWidget::DockWidgetFloatable | QDockWidget::DockWidgetClosable);
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auto* shell = new QWidget(this);
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auto* layout = new QVBoxLayout(shell);
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layout->setContentsMargins(8, 8, 8, 8);
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layout->setSpacing(6);
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m_list = new ResourceListWidget(shell);
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layout->addWidget(m_list, 1);
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if (m_list && m_list->verticalScrollBar()) {
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connect(m_list->verticalScrollBar(), &QScrollBar::valueChanged, this, [this](int value) {
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if (!m_list || !m_list->verticalScrollBar()) return;
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if (!m_onlineProvider || !m_onlineBound || m_onlineLoading || m_onlineExhausted) return;
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const int maxV = m_list->verticalScrollBar()->maximum();
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// 接近底部（阈值 80px）：自动加载下一页
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if (value >= maxV - 80) {
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fetchOnlineNextPage();
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}
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});
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}
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setWidget(shell);
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}
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void ResourceLibraryDock::setProviders(core::library::ResourceLibraryProvider* localProvider,
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core::library::ResourceLibraryProvider* onlineProvider) {
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if (m_localProvider == localProvider && m_onlineProvider == onlineProvider) {
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return;
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}
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if (m_localProvider) disconnect(m_localProvider, nullptr, this, nullptr);
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if (m_onlineProvider) disconnect(m_onlineProvider, nullptr, this, nullptr);
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m_localProvider = localProvider;
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m_onlineProvider = onlineProvider;
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m_onlineExhausted = false;
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auto bind = [&](core::library::ResourceLibraryProvider* p,
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QVector<core::library::LibraryResource>& store,
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bool isOnline) {
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if (!p) {
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store.clear();
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return;
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}
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connect(p, &core::library::ResourceLibraryProvider::resourcesReady,
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this, [this, &store, isOnline](const QVector<core::library::LibraryResource>& res) {
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if (!isOnline) {
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store = res;
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} else {
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m_onlineLoading = false;
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if (res.isEmpty()) {
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m_onlineExhausted = true;
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return;
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}
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store += res;
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}
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rebuildCombinedList();
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});
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connect(p, &core::library::ResourceLibraryProvider::resourcesFailed,
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this, [this, isOnline](const QString& err) {
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Q_UNUSED(err);
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if (isOnline) {
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m_onlineLoading = false;
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// 在线错误默认不打扰 UI；下次滚动到底仍可重试（除非 provider 选择返回空 ready）。
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}
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});
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};
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bind(m_localProvider, m_localResources, false);
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bind(m_onlineProvider, m_onlineResources, true);
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if (m_localProvider) {
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m_localProvider->fetchResourcesAsync();
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} else {
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m_localResources.clear();
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}
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rebuildCombinedList();
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ensureOnlineLoaded();
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}
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void ResourceLibraryDock::ensureOnlineLoaded() {
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if (m_onlineBound) {
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return;
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}
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m_onlineBound = true;
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if (!m_onlineProvider) {
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return;
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}
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fetchOnlineNextPage();
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}
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void ResourceLibraryDock::fetchOnlineNextPage() {
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if (!m_onlineProvider) {
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return;
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}
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if (m_onlineLoading) {
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return;
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}
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if (m_onlineExhausted) {
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return;
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}
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m_onlineLoading = true;
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// provider 当前仍是预留实现；这里保持“分页”调用语义（多次调用 fetchResourcesAsync）
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m_onlineProvider->fetchResourcesAsync();
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}
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void ResourceLibraryDock::rebuildCombinedList() {
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if (!m_list) return;
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auto* list = static_cast<ResourceListWidget*>(m_list);
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list->clear();
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QVector<core::library::LibraryResource> combined;
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combined.reserve(m_localResources.size() + m_onlineResources.size());
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combined += m_localResources;
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combined += m_onlineResources;
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list->setResources(combined);
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for (int i = 0; i < combined.size(); ++i) {
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const auto& r = combined[i];
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auto* it = new QListWidgetItem();
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it->setFlags(it->flags() | Qt::ItemIsDragEnabled);
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it->setText(r.displayName);
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it->setIcon(QIcon(makePreviewPixmap(r)));
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it->setData(Qt::UserRole, i);
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it->setToolTip(r.resourceId);
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list->addItem(it);
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}
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}
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} // namespace gui
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