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| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
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| ** Public license version 3 or any later version approved by the KDE Free |
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| |
| #include "qqnxrasterbackingstore.h" |
| #include "qqnxrasterwindow.h" |
| #include "qqnxscreen.h" |
| #include "qqnxglobal.h" |
| |
| #include <QtCore/QDebug> |
| |
| #include <errno.h> |
| |
| #if defined(QQNXRASTERBACKINGSTORE_DEBUG) |
| #define qRasterBackingStoreDebug qDebug |
| #else |
| #define qRasterBackingStoreDebug QT_NO_QDEBUG_MACRO |
| #endif |
| |
| QT_BEGIN_NAMESPACE |
| |
| QQnxRasterBackingStore::QQnxRasterBackingStore(QWindow *window) |
| : QPlatformBackingStore(window), |
| m_needsPosting(false), |
| m_scrolled(false) |
| { |
| qRasterBackingStoreDebug() << "w =" << window; |
| |
| m_window = window; |
| } |
| |
| QQnxRasterBackingStore::~QQnxRasterBackingStore() |
| { |
| qRasterBackingStoreDebug() << "w =" << window(); |
| } |
| |
| QPaintDevice *QQnxRasterBackingStore::paintDevice() |
| { |
| if (platformWindow() && platformWindow()->hasBuffers()) |
| return platformWindow()->renderBuffer().image(); |
| |
| return 0; |
| } |
| |
| void QQnxRasterBackingStore::flush(QWindow *window, const QRegion ®ion, const QPoint &offset) |
| { |
| Q_UNUSED(offset) |
| |
| qRasterBackingStoreDebug() << "w =" << this->window(); |
| |
| // Sometimes this method is called even though there is nothing to be |
| // flushed (posted in "screen" parlance), for instance, after an expose |
| // event directly follows a geometry change event. |
| if (!m_needsPosting) |
| return; |
| |
| QQnxWindow *targetWindow = 0; |
| if (window) |
| targetWindow = static_cast<QQnxWindow *>(window->handle()); |
| |
| // we only need to flush the platformWindow backing store, since this is |
| // the buffer where all drawing operations of all windows, including the |
| // child windows, are performed; conceptually ,child windows have no buffers |
| // (actually they do have a 1x1 placeholder buffer due to libscreen limitations), |
| // since Qt will only draw to the backing store of the top-level window. |
| if (!targetWindow || targetWindow == platformWindow()) |
| platformWindow()->post(region); // update the display with newly rendered content |
| |
| m_needsPosting = false; |
| m_scrolled = false; |
| } |
| |
| void QQnxRasterBackingStore::resize(const QSize &size, const QRegion &staticContents) |
| { |
| Q_UNUSED(size); |
| Q_UNUSED(staticContents); |
| qRasterBackingStoreDebug() << "w =" << window() << ", s =" << size; |
| |
| // NOTE: defer resizing window buffers until next paint as |
| // resize() can be called multiple times before a paint occurs |
| } |
| |
| bool QQnxRasterBackingStore::scroll(const QRegion &area, int dx, int dy) |
| { |
| qRasterBackingStoreDebug() << "w =" << window(); |
| |
| m_needsPosting = true; |
| |
| if (!m_scrolled) { |
| platformWindow()->scroll(area, dx, dy, true); |
| m_scrolled = true; |
| return true; |
| } |
| return false; |
| } |
| |
| void QQnxRasterBackingStore::beginPaint(const QRegion ®ion) |
| { |
| Q_UNUSED(region); |
| |
| qRasterBackingStoreDebug() << "w =" << window(); |
| m_needsPosting = true; |
| |
| platformWindow()->adjustBufferSize(); |
| |
| if (window()->requestedFormat().alphaBufferSize() > 0) { |
| auto platformScreen = static_cast<QQnxScreen *>(platformWindow()->screen()); |
| for (const QRect &r : region) { |
| // Clear transparent regions |
| const int bg[] = { |
| SCREEN_BLIT_COLOR, 0x00000000, |
| SCREEN_BLIT_DESTINATION_X, r.x(), |
| SCREEN_BLIT_DESTINATION_Y, r.y(), |
| SCREEN_BLIT_DESTINATION_WIDTH, r.width(), |
| SCREEN_BLIT_DESTINATION_HEIGHT, r.height(), |
| SCREEN_BLIT_END |
| }; |
| Q_SCREEN_CHECKERROR(screen_fill(platformScreen->nativeContext(), |
| platformWindow()->renderBuffer().nativeBuffer(), bg), |
| "failed to clear transparent regions"); |
| } |
| Q_SCREEN_CHECKERROR(screen_flush_blits(platformScreen->nativeContext(), |
| SCREEN_WAIT_IDLE), "failed to flush blits"); |
| } |
| } |
| |
| void QQnxRasterBackingStore::endPaint() |
| { |
| qRasterBackingStoreDebug() << "w =" << window(); |
| } |
| |
| QQnxRasterWindow *QQnxRasterBackingStore::platformWindow() const |
| { |
| Q_ASSERT(m_window->handle()); |
| return static_cast<QQnxRasterWindow*>(m_window->handle()); |
| } |
| |
| QT_END_NAMESPACE |