| /**************************************************************************** |
| ** |
| ** Copyright (C) 2019 The Qt Company Ltd. |
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| ** This file is part of the examples of the Qt Wayland module |
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| ****************************************************************************/ |
| |
| #include <QGuiApplication> |
| #include <QtGui/private/qguiapplication_p.h> |
| #include <QOpenGLWindow> |
| #include <QOpenGLTexture> |
| #include <QOpenGLTextureBlitter> |
| #include <QPainter> |
| #include <QMouseEvent> |
| #include <QPlatformSurfaceEvent> |
| |
| #include <QtWaylandClient/private/qwaylanddisplay_p.h> |
| #include <QtWaylandClient/private/qwaylandintegration_p.h> |
| #include <QtWaylandClient/private/qwaylandserverbufferintegration_p.h> |
| #include "texturesharingextension.h" |
| |
| #include <QDebug> |
| #include <QtGui/qpa/qplatformnativeinterface.h> |
| #include <QTimer> |
| #include <QMap> |
| |
| class TestWindow : public QOpenGLWindow |
| { |
| Q_OBJECT |
| |
| public: |
| TestWindow() |
| : m_extension(nullptr) |
| { |
| m_extension = new TextureSharingExtension; |
| connect(m_extension, SIGNAL(bufferReceived(QtWaylandClient::QWaylandServerBuffer*, const QString&)), this, SLOT(receiveBuffer(QtWaylandClient::QWaylandServerBuffer*, const QString&))); |
| connect(m_extension, &TextureSharingExtension::activeChanged, this, &TestWindow::handleExtensionActive); |
| } |
| |
| public slots: |
| void receiveBuffer(QtWaylandClient::QWaylandServerBuffer *buffer, const QString &key) |
| { |
| if (!buffer) { |
| qWarning() << "Could not find image with key" << key; |
| return; |
| } |
| m_buffers.insert(key, buffer); |
| update(); |
| } |
| |
| |
| void handleExtensionActive() |
| { |
| if (m_extension->isActive()) |
| getImage("qt_logo"); |
| } |
| |
| protected: |
| |
| void mousePressEvent(QMouseEvent *ev) override { |
| QRect rect(10, height() - 10 - 50, 50, 50); |
| bool rectPressed = rect.contains(ev->pos()); |
| |
| static int c; |
| |
| if (rectPressed && ev->button() == Qt::LeftButton) |
| getImage(QString("unreasonably large image %1").arg(c++)); |
| else if (ev->button() == Qt::RightButton) |
| getImage("guitar.jpg"); |
| else if (ev->button() == Qt::MiddleButton) |
| unloadImageAt(ev->pos()); |
| } |
| |
| void initializeGL() override |
| { |
| m_blitter = new QOpenGLTextureBlitter; |
| m_blitter->create(); |
| } |
| |
| void paintGL() override { |
| glClearColor(.5, .45, .42, 1.); |
| glClear(GL_COLOR_BUFFER_BIT); |
| |
| // draw a "button" to click in |
| glScissor(10,10,50,50); |
| glEnable(GL_SCISSOR_TEST); |
| glClearColor(0.4, 0.7, 0.9, 1.0); |
| glClear(GL_COLOR_BUFFER_BIT); |
| glDisable(GL_SCISSOR_TEST); |
| |
| int x = 0; |
| qDebug() << "*** paintGL ***"; |
| showBuffers(); |
| for (auto buffer: qAsConst(m_buffers)) { |
| m_blitter->bind(); |
| QSize s(buffer->size()); |
| qDebug() << "painting" << buffer << s; |
| if (s.width() > 1024) { |
| qDebug() << "showing large buffer at reduced size"; |
| s = QSize(128,128); |
| } |
| QRectF targetRect(QPointF(x,0), s); |
| QOpenGLTexture *texture = buffer->toOpenGlTexture(); |
| if (!texture) { |
| qWarning("Null texture"); |
| continue; |
| } |
| auto surfaceOrigin = QOpenGLTextureBlitter::OriginTopLeft; |
| QMatrix4x4 targetTransform = QOpenGLTextureBlitter::targetTransform(targetRect, QRect(QPoint(), size())); |
| m_blitter->blit(texture->textureId(), targetTransform, surfaceOrigin); |
| m_blitter->release(); |
| x += s.width() + 10; |
| } |
| } |
| |
| private: |
| void getImage(const QString &key) { |
| if (!m_buffers.contains(key)) |
| m_extension->requestImage(key); |
| } |
| |
| void showBuffers() const |
| { |
| auto end = m_buffers.cend(); |
| for (auto it = m_buffers.cbegin(); it != end; ++it) { |
| qDebug() << " " << it.key() << it.value(); |
| } |
| } |
| |
| void unloadImageAt(const QPoint &pos) { |
| int x = 0; |
| QtWaylandClient::QWaylandServerBuffer *foundBuffer = nullptr; |
| QString name; |
| auto end = m_buffers.cend(); |
| for (auto it = m_buffers.cbegin(); it != end; ++it) { |
| auto *buffer = it.value(); |
| QSize s(buffer->size()); |
| if (s.width() > 1024) |
| s = QSize(128,128); |
| QRectF targetRect(QPointF(x,0), s); |
| //qDebug() << " " << it.key() << it.value() << targetRect << pos; |
| |
| if (targetRect.contains(pos)) { |
| foundBuffer = buffer; |
| name = it.key(); |
| //qDebug() << "FOUND!!"; |
| break; |
| } |
| |
| x += s.width() + 10; |
| } |
| if (foundBuffer) { |
| qDebug() << "unloading image" << name << "found at" << pos; |
| unloadImage(name); |
| } else { |
| qDebug() << "no image at" << pos; |
| } |
| } |
| |
| void unloadImage(const QString &key) { |
| auto *buf = m_buffers.take(key); |
| if (buf) { |
| qDebug() << "unloadImage deleting" << buf; |
| delete buf; |
| m_extension->abandonImage(key); |
| } |
| update(); |
| } |
| |
| QOpenGLTextureBlitter *m_blitter = nullptr; |
| TextureSharingExtension *m_extension = nullptr; |
| QMap<QString, QtWaylandClient::QWaylandServerBuffer*> m_buffers; |
| |
| }; |
| |
| int main (int argc, char **argv) |
| { |
| QGuiApplication app(argc, argv); |
| |
| TestWindow window; |
| window.show(); |
| |
| return app.exec(); |
| } |
| |
| #include "main.moc" |