Changeset 561 for trunk/src/gui/image/qpixmap_x11.cpp

Timestamp:

Feb 11, 2010, 11:19:06 PM (15 years ago)

Author:

Dmitry A. Kuminov

Message:

trunk: Merged in qt 4.6.1 sources.

Location:

trunk

Files:

• . (modified) (1 prop)
• src/gui/image/qpixmap_x11.cpp (modified) (38 diffs)

trunk/src/gui/image/qpixmap_x11.cpp

@@ -2 +2 @@
 **
 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Qt Software Information (qt-info@nokia.com)
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the QtGui module of the Qt Toolkit.
@@ -21 +22 @@
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
-** In addition, as a special exception, Nokia gives you certain
-** additional rights. These rights are described in the Nokia Qt LGPL
-** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
-** package.
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** GNU General Public License Usage
@@ -34 +34 @@
 ** met: http://www.gnu.org/copyleft/gpl.html.
 **
-** If you are unsure which license is appropriate for your use, please
-** contact the sales department at qt-sales@nokia.com.
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
 ** $QT_END_LICENSE$
 **
@@ -68 +68 @@
 #include "qx11info_x11.h"
 #include <private/qdrawhelper_p.h>
+#include <private/qimage_p.h>
 
 #include <stdlib.h>
@@ -313 +314 @@
 
 QX11PixmapData::QX11PixmapData(PixelType type)
-    : QPixmapData(type, X11Class), hd(0), w(0), h(0), d(0),
-      uninit(true), read_only(false), x11_mask(0), picture(0), mask_picture(0), hd2(0),
+    : QPixmapData(type, X11Class), hd(0),
+      flags(Uninitialized), x11_mask(0), picture(0), mask_picture(0), hd2(0), gl_surface(0),
       share_mode(QPixmap::ImplicitlyShared), pengine(0)
 {
+}
+
+QPixmapData *QX11PixmapData::createCompatiblePixmapData() const
+{
+    return new QX11PixmapData(pixelType());
 }
 
@@ -325 +331 @@
     w = width;
     h = height;
+    is_null = (w <= 0 || h <= 0);
 
     if (defaultScreen >= 0 && defaultScreen != xinfo.screen()) {
@@ -348 +355 @@
         w = 0;
         h = 0;
+        is_null = true;
         hd = 0;
         picture = 0;
@@ -368 +376 @@
 }
 
+struct QX11AlphaDetector
+{
+    bool hasAlpha() const {
+        if (checked)
+            return has;
+        // Will implicitly also check format and return quickly for opaque types...
+        checked = true;
+        has = const_cast<QImage *>(image)->data_ptr()->checkForAlphaPixels();
+        return has;
+    }
+
+    bool hasXRenderAndAlpha() const {
+        if (!X11->use_xrender)
+            return false;
+        return hasAlpha();
+    }
+
+    QX11AlphaDetector(const QImage *i, Qt::ImageConversionFlags flags)
+        : image(i), checked(false), has(false)
+    {
+        if (flags & Qt::NoOpaqueDetection) {
+            checked = true;
+            has = image->hasAlphaChannel();
+        }
+    }
+
+    const QImage *image;
+    mutable bool checked;
+    mutable bool has;
+};
+
 void QX11PixmapData::fromImage(const QImage &img,
                                Qt::ImageConversionFlags flags)
@@ -376 +415 @@
     h = img.height();
     d = img.depth();
+    is_null = (w <= 0 || h <= 0);
+
+    if (is_null) {
+        w = h = 0;
+        return;
+    }
 
     if (defaultScreen >= 0 && defaultScreen != xinfo.screen()) {
@@ -396 +441 @@
     if (uint(w) >= 32768 || uint(h) >= 32768) {
         w = h = 0;
+        is_null = true;
         return;
     }
 
-    int dd = X11->use_xrender && img.hasAlphaChannel() ? 32 : xinfo.depth();
+    QX11AlphaDetector alphaCheck(&img, flags);
+    int dd = alphaCheck.hasXRenderAndAlpha() ? 32 : xinfo.depth();
+
     if (qt_x11_preferred_pixmap_depth)
         dd = qt_x11_preferred_pixmap_depth;
@@ -422 +470 @@
             conv8 = (d == 1);                        // native depth wanted
         } else if (d == 1) {
-            if (image.numColors() == 2) {
+            if (image.colorCount() == 2) {
                 QRgb c0 = image.color(0);        // Auto: convert to best
                 QRgb c1 = image.color(1);
@@ -447 +495 @@
     XImage *xi = 0;
     bool    trucol = (visual->c_class >= TrueColor);
-    int     nbytes = image.numBytes();
+    int     nbytes = image.byteCount();
     uchar  *newbits= 0;
 
 #ifndef QT_NO_XRENDER
-    if (X11->use_xrender && image.hasAlphaChannel()) {
+    if (alphaCheck.hasXRenderAndAlpha()) {
         const QImage &cimage = image;
 
@@ -589 +637 @@
         if (d8) {                                // setup pixel translation
             QVector<QRgb> ctable = cimage.colorTable();
-            for (int i=0; i < cimage.numColors(); i++) {
+            for (int i=0; i < cimage.colorCount(); i++) {
                 int r = qRed  (ctable[i]);
                 int g = qGreen(ctable[i]);
@@ -915 +963 @@
         int  pop[256];                                // pixel popularity
 
-        if (image.numColors() == 0)
-            image.setNumColors(1);
+        if (image.colorCount() == 0)
+            image.setColorCount(1);
 
         const QImage &cimage = image;
@@ -946 +994 @@
         };
         int ncols = 0;
-        for (int i=0; i< cimage.numColors(); i++) { // compute number of colors
+        for (int i=0; i< cimage.colorCount(); i++) { // compute number of colors
             if (pop[i] > 0)
                 ncols++;
         }
-        for (int i = cimage.numColors(); i < 256; i++) // ignore out-of-range pixels
+        for (int i = cimage.colorCount(); i < 256; i++) // ignore out-of-range pixels
             pop[i] = 0;
 
@@ -1088 +1136 @@
 #endif
 
-    if (image.hasAlphaChannel()) {
+    if (alphaCheck.hasAlpha()) {
         QBitmap m = QBitmap::fromImage(image.createAlphaMask(flags));
         setMask(m);
@@ -1110 +1158 @@
     h = img.height();
     d = 1;
+    is_null = (w <= 0 || h <= 0);
     int bpl = (w + 7) / 8;
     int ibpl = img.bytesPerLine();
@@ -1213 +1262 @@
             hd2 = 0;
         }
-        if (!read_only)
+        if (!(flags & Readonly))
             XFreePixmap(xinfo.display(), hd);
         hd = 0;
@@ -1221 +1270 @@
 QPixmap QX11PixmapData::alphaChannel() const
 {
-    if (!hasAlphaChannel())
-        return QPixmap();
+    if (!hasAlphaChannel()) {
+        QPixmap pm(w, h);
+        pm.fill(Qt::white);
+        return pm;
+    }
     QImage im(toImage());
     return QPixmap::fromImage(im.alphaChannel(), Qt::OrderedDither);
@@ -1438 +1490 @@
         // we may have to swap the byte order
         if ((QSysInfo::ByteOrder == QSysInfo::LittleEndian && xi->byte_order == MSBFirst)
-            || (QSysInfo::ByteOrder == QSysInfo::BigEndian))
+            || (QSysInfo::ByteOrder == QSysInfo::BigEndian && xi->byte_order == LSBFirst))
         {
             for (int i=0; i < image.height(); i++) {
@@ -1605 +1657 @@
 
     if (d == 1) {                                // bitmap
-        image.setNumColors(2);
+        image.setColorCount(2);
         image.setColor(0, qRgb(255,255,255));
         image.setColor(1, qRgb(0,0,0));
@@ -1661 +1713 @@
             if (ncols < 256) {
                 trans = ncols++;
-                image.setNumColors(ncols);        // create color table
+                image.setColorCount(ncols);        // create color table
                 image.setColor(trans, 0x00000000);
             } else {
-                image.setNumColors(ncols);        // create color table
+                image.setColorCount(ncols);        // create color table
                 // oh dear... no spare "transparent" pixel.
                 // use first pixel in image (as good as any).
@@ -1687 +1739 @@
             }
         } else {
-            image.setNumColors(ncols);        // create color table
+            image.setColorCount(ncols);        // create color table
         }
         QVector<QColor> colors = QColormap::instance(xinfo.screen()).colormap();
@@ -1870 +1922 @@
         return bm;
     } else {                                        // color pixmap
-        QPixmap pm;
-        QX11PixmapData *x11Data = static_cast<QX11PixmapData*>(pm.data);
-        x11Data->uninit = false;
+        QX11PixmapData *x11Data = new QX11PixmapData(QPixmapData::PixmapType);
+        QPixmap pm(x11Data);
+        x11Data->flags &= ~QX11PixmapData::Uninitialized;
         x11Data->xinfo = xinfo;
         x11Data->d = d;
         x11Data->w = w;
         x11Data->h = h;
+        x11Data->is_null = (w <= 0 || h <= 0);
         x11Data->hd = (Qt::HANDLE)XCreatePixmap(X11->display,
                                                 RootWindow(X11->display, xinfo.screen()),
                                                 w, h, d);
+        x11Data->setSerialNumber(++qt_pixmap_serial);
+
 #ifndef QT_NO_XRENDER
         if (X11->use_xrender) {
@@ -1915 +1970 @@
 }
 
-/*!
-  \internal
-*/
 int QPixmap::x11SetDefaultScreen(int screen)
 {
@@ -1925 +1977 @@
 }
 
-/*!
-  \internal
-*/
 void QPixmap::x11SetScreen(int screen)
 {
@@ -1935 +1984 @@
     }
 
+    if (isNull())
+        return;
+
     if (data->classId() != QPixmapData::X11Class)
         return;
@@ -1941 +1993 @@
         screen = QX11Info::appScreen();
 
-    QX11PixmapData *x11Data = static_cast<QX11PixmapData*>(data);
+    QX11PixmapData *x11Data = static_cast<QX11PixmapData*>(data.data());
     if (screen == x11Data->xinfo.screen())
         return; // nothing to do
@@ -2019 +2071 @@
     QPixmap pm(data);
 
-    data->uninit = false;
+    data->flags &= ~QX11PixmapData::Uninitialized;
     pm.x11SetScreen(scr);
 
@@ -2035 +2087 @@
 }
 
-/*!
-    Returns information about the configuration of the X display used to display
-    the widget.
-
-    \warning This function is only available on X11.
-
-    \sa {QPixmap#Pixmap Information}{Pixmap Information}
-*/
 const QX11Info &QPixmap::x11Info() const
 {
-    if (data->classId() == QPixmapData::X11Class)
-        return static_cast<QX11PixmapData*>(data)->xinfo;
+    if (data && data->classId() == QPixmapData::X11Class)
+        return static_cast<QX11PixmapData*>(data.data())->xinfo;
     else {
         static QX11Info nullX11Info;
@@ -2069 +2113 @@
     QX11PixmapData *that = const_cast<QX11PixmapData*>(this);
 
-    if (read_only && share_mode == QPixmap::ImplicitlyShared) {
+    if ((flags & Readonly) && share_mode == QPixmap::ImplicitlyShared) {
         // if someone wants to draw onto us, copy the shared contents
         // and turn it into a fully fledged QPixmap
@@ -2091 +2135 @@
         }
         that->hd = hd_copy;
-        that->read_only = false;
+        that->flags &= ~QX11PixmapData::Readonly;
     }
 
@@ -2099 +2143 @@
 }
 
-/*!
-    Returns the X11 Picture handle of the pixmap for XRender
-    support.
-
-    This function will return 0 if XRender support is not compiled
-    into Qt, if the XRender extension is not supported on the X11
-    display, or if the handle could not be created. Use of this
-    function is not portable.
-
-    \warning This function is only available on X11.
-
-    \sa {QPixmap#Pixmap Information}{Pixmap Information}
-*/
-
 Qt::HANDLE QPixmap::x11PictureHandle() const
 {
 #ifndef QT_NO_XRENDER
-    if (data->classId() == QPixmapData::X11Class)
-        return static_cast<QX11PixmapData*>(data)->picture;
+    if (data && data->classId() == QPixmapData::X11Class)
+        return static_cast<const QX11PixmapData*>(data.data())->picture;
     else
         return 0;
@@ -2156 +2186 @@
     setSerialNumber(++qt_pixmap_serial);
 
-    uninit = false;
+    flags &= ~Uninitialized;
     xinfo = x11Data->xinfo;
     d = x11Data->d;
     w = rect.width();
     h = rect.height();
+    is_null = (w <= 0 || h <= 0);
     hd = (Qt::HANDLE)XCreatePixmap(X11->display,
                                    RootWindow(X11->display, x11Data->xinfo.screen()),
@@ -2206 +2237 @@
 }
 
+bool QX11PixmapData::scroll(int dx, int dy, const QRect &rect)
+{
+    GC gc = XCreateGC(X11->display, hd, 0, 0);
+    XCopyArea(X11->display, hd, hd, gc,
+              rect.left(), rect.top(), rect.width(), rect.height(),
+              rect.left() + dx, rect.top() + dy);
+    XFreeGC(X11->display, gc);
+    return true;
+}
+
 #if !defined(QT_NO_XRENDER)
 void QX11PixmapData::convertToARGB32(bool preserveContents)
@@ -2213 +2254 @@
 
     // Q_ASSERT(count == 1);
-    if (read_only && share_mode == QPixmap::ExplicitlyShared)
+    if ((flags & Readonly) && share_mode == QPixmap::ExplicitlyShared)
         return;
 
@@ -2223 +2264 @@
         if (preserveContents)
             XRenderComposite(X11->display, PictOpSrc, picture, 0, p, 0, 0, 0, 0, 0, 0, w, h);
-        if (!read_only)
+        if (!(flags & Readonly))
             XRenderFreePicture(X11->display, picture);
     }
-    if (hd && !read_only)
+    if (hd && !(flags & Readonly))
         XFreePixmap(X11->display, hd);
     if (x11_mask) {
@@ -2264 +2305 @@
     QX11PixmapData *data = new QX11PixmapData(depth == 1 ? QPixmapData::BitmapType : QPixmapData::PixmapType);
     data->setSerialNumber(++qt_pixmap_serial);
-    data->read_only = true;
+    data->flags = QX11PixmapData::Readonly;
     data->share_mode = mode;
-    data->uninit = false;
     data->w = width;
     data->h = height;
+    data->is_null = (width <= 0 || height <= 0);
     data->d = depth;
     data->hd = pixmap;