Changeset 846 for trunk/src/gui/image/qpixmap.cpp

Timestamp:

May 5, 2011, 5:36:53 AM (14 years ago)

Author:

Dmitry A. Kuminov

Message:

trunk: Merged in qt 4.7.2 sources from branches/vendor/nokia/qt.

Location:

trunk

Files:

• . (modified) (1 prop)
• src/gui/image/qpixmap.cpp (modified) (21 diffs)

trunk/src/gui/image/qpixmap.cpp

@@ -1 +1 @@
 /****************************************************************************
 **
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
@@ -83 +83 @@
 
 #include "qpixmap_raster_p.h"
+#include "private/qstylehelper_p.h"
 
 QT_BEGIN_NAMESPACE
@@ -579 +580 @@
 QSize QPixmap::size() const
 {
-    return data ? QSize(data->width(), data->height()) : QSize();
+    return data ? QSize(data->width(), data->height()) : QSize(0, 0);
 }
 
@@ -636 +637 @@
         return;
 
+    // QPixmap.data member may be QRuntimePixmapData so use pixmapData() function to get
+    // the actual underlaying runtime pixmap data.
+    QPixmapData *pd = pixmapData();
+
     // Create new pixmap
-    QPixmap pm(QSize(w, h), data ? data->type : QPixmapData::PixmapType);
+    QPixmap pm(QSize(w, h), pd ? pd->type : QPixmapData::PixmapType);
     bool uninit = false;
 #if defined(Q_WS_X11)
-    QX11PixmapData *x11Data = data && data->classId() == QPixmapData::X11Class ? static_cast<QX11PixmapData*>(data.data()) : 0;
+    QX11PixmapData *x11Data = pd && pd->classId() == QPixmapData::X11Class ? static_cast<QX11PixmapData*>(pd) : 0;
     if (x11Data) {
         pm.x11SetScreen(x11Data->xinfo.screen());
@@ -646 +651 @@
     }
 #elif defined(Q_WS_MAC)
-    QMacPixmapData *macData = data && data->classId() == QPixmapData::MacClass ? static_cast<QMacPixmapData*>(data.data()) : 0;
+    QMacPixmapData *macData = pd && pd->classId() == QPixmapData::MacClass ? static_cast<QMacPixmapData*>(pd) : 0;
     if (macData)
         uninit = macData->uninit;
@@ -660 +665 @@
 #if defined(Q_WS_X11)
     if (x11Data && x11Data->x11_mask) {
-        QX11PixmapData *pmData = static_cast<QX11PixmapData*>(pm.data.data());
-        pmData->x11_mask = (Qt::HANDLE)XCreatePixmap(X11->display,
-                                                     RootWindow(x11Data->xinfo.display(),
-                                                                x11Data->xinfo.screen()),
-                                                      w, h, 1);
-        GC gc = XCreateGC(X11->display, pmData->x11_mask, 0, 0);
-        XCopyArea(X11->display, x11Data->x11_mask, pmData->x11_mask, gc, 0, 0, qMin(width(), w), qMin(height(), h), 0, 0);
-        XFreeGC(X11->display, gc);
+        QPixmapData *newPd = pm.pixmapData();
+        QX11PixmapData *pmData = (newPd && newPd->classId() == QPixmapData::X11Class)
+                                 ? static_cast<QX11PixmapData*>(newPd) : 0;
+        if (pmData) {
+            pmData->x11_mask = (Qt::HANDLE)XCreatePixmap(X11->display,
+                                                         RootWindow(x11Data->xinfo.display(),
+                                                                    x11Data->xinfo.screen()),
+                                                         w, h, 1);
+            GC gc = XCreateGC(X11->display, pmData->x11_mask, 0, 0);
+            XCopyArea(X11->display, x11Data->x11_mask, pmData->x11_mask, gc, 0, 0,
+                      qMin(width(), w), qMin(height(), h), 0, 0);
+            XFreeGC(X11->display, gc);
+        }
     }
 #endif
@@ -766 +776 @@
     Creates and returns a mask for this pixmap based on the given \a
     maskColor. If the \a mode is Qt::MaskInColor, all pixels matching the
-    maskColor will be opaque. If \a mode is Qt::MaskOutColor, all pixels
-    matching the maskColor will be transparent.
+    maskColor will be transparent. If \a mode is Qt::MaskOutColor, all pixels
+    matching the maskColor will be opaque.
 
     This function is slow because it involves converting to/from a
@@ -826 +836 @@
 
     QFileInfo info(fileName);
-    QString key = QLatin1String("qt_pixmap_") + info.absoluteFilePath() + QLatin1Char('_') + QString::number(info.lastModified().toTime_t()) + QLatin1Char('_') +
-        QString::number(info.size()) + QLatin1Char('_') + QString::number(data ? data->pixelType() : QPixmapData::PixmapType);
+    QString key = QLatin1Literal("qt_pixmap")
+                  % info.absoluteFilePath()
+                  % HexString<uint>(info.lastModified().toTime_t())
+                  % HexString<quint64>(info.size())
+                  % HexString<uint>(data ? data->pixelType() : QPixmapData::PixmapType);
+
+    // Note: If no extension is provided, we try to match the
+    // file against known plugin extensions
+    if (!info.completeSuffix().isEmpty() && !info.exists())
+        return false;
 
     if (QPixmapCache::find(key, *this))
@@ -1072 +1090 @@
         sendResizeEvents(widget);
 
+    widget->d_func()->prepareToRender(QRegion(),
+        QWidget::DrawWindowBackground | QWidget::DrawChildren | QWidget::IgnoreMask);
+
     QRect r(rect);
     if (r.width() < 0)
@@ -1082 +1103 @@
 
     QPixmap res(r.size());
-    widget->render(&res, QPoint(), r,
-                   QWidget::DrawWindowBackground | QWidget::DrawChildren | QWidget::IgnoreMask);
+    if (!qt_widget_private(widget)->isOpaque)
+        res.fill(Qt::transparent);
+
+    widget->d_func()->render(&res, QPoint(), r, QWidget::DrawWindowBackground
+                             | QWidget::DrawChildren | QWidget::IgnoreMask, true);
     return res;
 }
@@ -1161 +1185 @@
 {
 #if defined(Q_WS_X11)
-    if (data && data->classId() == QPixmapData::X11Class)
-        return static_cast<const QX11PixmapData*>(data.constData())->handle();
+    const QPixmapData *pd = pixmapData();
+    if (pd) {
+        if (pd->classId() == QPixmapData::X11Class)
+            return static_cast<const QX11PixmapData*>(pd)->handle();
+        else
+            qWarning("QPixmap::handle(): Pixmap is not an X11 class pixmap");
+    }
 #endif
     return 0;
@@ -1279 +1308 @@
     valid image file.
 
-    \sa QPixmap::save(), {Format of the QDataStream Operators}
+    \sa QPixmap::save(), {Serializing Qt Data Types}
 */
 
@@ -1292 +1321 @@
     Reads an image from the given \a stream into the given \a pixmap.
 
-    \sa QPixmap::load(), {Format of the QDataStream Operators}
+    \sa QPixmap::load(), {Serializing Qt Data Types}
 */
 
@@ -1364 +1393 @@
 
 /*!
-    \fn bool QPixmap::convertFromImage(const QImage &image, Qt::ImageConversionFlags flags)
-
-    Use the static fromImage() function instead.
-*/
+    Replaces this pixmap's data with the given \a image using the
+    specified \a flags to control the conversion.  The \a flags
+    argument is a bitwise-OR of the \l{Qt::ImageConversionFlags}.
+    Passing 0 for \a flags sets all the default options. Returns true
+    if the result is that this pixmap is not null.
+
+    Note: this function was part of Qt 3 support in Qt 4.6 and earlier.
+    It has been promoted to official API status in 4.7 to support updating
+    the pixmap's image without creating a new QPixmap as fromImage() would.
+
+    \sa fromImage()
+    \since 4.7
+*/
+bool QPixmap::convertFromImage(const QImage &image, Qt::ImageConversionFlags flags)
+{
+    if (image.isNull() || !data)
+        *this = QPixmap::fromImage(image, flags);
+    else
+        data->fromImage(image, flags);
+    return !isNull();
+}
 
 /*!
@@ -1735 +1781 @@
     pixmap.
 
+    \note When using the native X11 graphics system, the pixmap
+    becomes invalid when the QApplication instance is destroyed.
+
     \sa QBitmap, QImage, QImageReader, QImageWriter
 */
@@ -1753 +1802 @@
     mask, otherwise returns false.
 
-    \warning This is potentially an expensive operation.
-
     \sa hasAlphaChannel(), mask()
 */
 bool QPixmap::hasAlpha() const
 {
-    return data && (data->hasAlphaChannel() || !data->mask().isNull());
+#if defined(Q_WS_X11)
+    if (data && data->hasAlphaChannel())
+        return true;
+    QPixmapData *pd = pixmapData();
+    if (pd && pd->classId() == QPixmapData::X11Class) {
+        QX11PixmapData *x11Data = static_cast<QX11PixmapData*>(pd);
+#ifndef QT_NO_XRENDER
+        if (x11Data->picture && x11Data->d == 32)
+            return true;
+#endif
+        if (x11Data->d == 1 || x11Data->x11_mask)
+            return true;
+    }
+    return false;
+#else
+    return data && data->hasAlphaChannel();
+#endif
 }
 
@@ -1927 +1990 @@
         return;
 
-    QPixmapData::ClassId id = data->classId();
+    // QPixmap.data member may be QRuntimePixmapData so use pixmapData() function to get
+    // the actual underlaying runtime pixmap data.
+    QPixmapData *pd = pixmapData();
+    QPixmapData::ClassId id = pd->classId();
     if (id == QPixmapData::RasterClass) {
-        QRasterPixmapData *rasterData = static_cast<QRasterPixmapData*>(data.data());
+        QRasterPixmapData *rasterData = static_cast<QRasterPixmapData*>(pd);
         rasterData->image.detach();
     }
 
     if (data->is_cached && data->ref == 1)
-        QImagePixmapCleanupHooks::executePixmapDataModificationHooks(data.data());
+        QImagePixmapCleanupHooks::executePixmapDataModificationHooks(pd);
 
 #if defined(Q_WS_MAC)
-    QMacPixmapData *macData = id == QPixmapData::MacClass ? static_cast<QMacPixmapData*>(data.data()) : 0;
+    QMacPixmapData *macData = id == QPixmapData::MacClass ? static_cast<QMacPixmapData*>(pd) : 0;
     if (macData) {
         if (macData->cg_mask) {
@@ -1952 +2018 @@
 
 #if defined(Q_WS_X11)
-    if (data->classId() == QPixmapData::X11Class) {
-        QX11PixmapData *d = static_cast<QX11PixmapData*>(data.data());
+    if (pd->classId() == QPixmapData::X11Class) {
+        QX11PixmapData *d = static_cast<QX11PixmapData*>(pd);
         d->flags &= ~QX11PixmapData::Uninitialized;
 
@@ -1983 +2049 @@
     use QBitmap::fromImage() instead.
 
-    \sa toImage(), {QPixmap#Pixmap Conversion}{Pixmap Conversion}
+    \sa fromImageReader(), toImage(), {QPixmap#Pixmap Conversion}{Pixmap Conversion}
 */
 QPixmap QPixmap::fromImage(const QImage &image, Qt::ImageConversionFlags flags)
@@ -1998 +2064 @@
 
 /*!
+    \fn QPixmap QPixmap::fromImageReader(QImageReader *imageReader, Qt::ImageConversionFlags flags)
+
+    Create a QPixmap from an image read directly from an \a imageReader.
+    The \a flags argument is a bitwise-OR of the \l{Qt::ImageConversionFlags}.
+    Passing 0 for \a flags sets all the default options.
+
+    On some systems, reading an image directly to QPixmap can use less memory than
+    reading a QImage to convert it to QPixmap.
+
+    \sa fromImage(), toImage(), {QPixmap#Pixmap Conversion}{Pixmap Conversion}
+*/
+QPixmap QPixmap::fromImageReader(QImageReader *imageReader, Qt::ImageConversionFlags flags)
+{
+    QGraphicsSystem *gs = QApplicationPrivate::graphicsSystem();
+    QScopedPointer<QPixmapData> data(gs ? gs->createPixmapData(QPixmapData::PixmapType)
+            : QGraphicsSystem::createDefaultPixmapData(QPixmapData::PixmapType));
+    data->fromImageReader(imageReader, flags);
+    return QPixmap(data.take());
+}
+
+/*!
     \fn QPixmap QPixmap::grabWindow(WId window, int x, int y, int
     width, int height)
@@ -2043 +2130 @@
 QPixmapData* QPixmap::pixmapData() const
 {
-    return data.data();
-}
+    if (data) {
+        QPixmapData* pm = data.data();
+        return pm->runtimeData() ? pm->runtimeData() : pm;
+    }
+
+    return 0;
+}
+
 
 /*!