Add new file for Symbian specific VG stuff and add Symbian glyph cache.

Factor out the Symbian specific bits of QVGPixmapData into a separate
file and introduce our subclassed implementation of the VG font cache.
Also make our font cache a friend of the S60 font engine because the
cache needs to access the CFont member to create the glyph image.

Reviewed-by: Alessandro Portale

1 files changed, 348 insertions, 0 deletions

diff --git a/src/openvg/qvg_symbian.cpp b/src/openvg/qvg_symbian.cpp
new file mode 100644
index 0000000..4a429d5
--- /dev/null
+++ b/src/openvg/qvg_symbian.cpp
@@ -0,0 +1,348 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qpixmapdata_vg_p.h"
+#include "qvgfontglyphcache_p.h"
+
+#ifdef QT_SYMBIAN_SUPPORTS_SGIMAGE
+#include <private/qt_s60_p.h>
+#include <fbs.h>
+#include <sgresource/sgimage.h>
+typedef EGLImageKHR (*pfnEglCreateImageKHR)(EGLDisplay, EGLContext, EGLenum, EGLClientBuffer, EGLint*);
+typedef EGLBoolean (*pfnEglDestroyImageKHR)(EGLDisplay, EGLImageKHR);
+typedef VGImage (*pfnVgCreateEGLImageTargetKHR)(VGeglImageKHR);
+#endif
+
+#if 1//defined(SYMBIAN_GDI_GLYPHDATA) && defined(QT_SYMBIAN_SUPPORTS_SGIMAGE)
+#include <graphics/glyphdataiterator.h>
+#include <private/qfontengine_s60_p.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+extern int qt_vg_pixmap_serial;
+
+static CFbsBitmap* createBlitCopy(CFbsBitmap* bitmap)
+{
+    CFbsBitmap *copy = q_check_ptr(new CFbsBitmap);
+    if(!copy)
+        return 0;
+
+    if (copy->Create(bitmap->SizeInPixels(), bitmap->DisplayMode()) != KErrNone) {
+        delete copy;
+        copy = 0;
+
+        return 0;
+    }
+
+    CFbsBitmapDevice* bitmapDevice = 0;
+    CFbsBitGc *bitmapGc = 0;
+    QT_TRAP_THROWING(bitmapDevice = CFbsBitmapDevice::NewL(copy));
+    QT_TRAP_THROWING(bitmapGc = CFbsBitGc::NewL());
+    bitmapGc->Activate(bitmapDevice);
+
+    bitmapGc->BitBlt(TPoint(), bitmap);
+
+    delete bitmapGc;
+    delete bitmapDevice;
+
+    return copy;
+}
+
+void QVGPixmapData::cleanup()
+{
+    is_null = w = h = 0;
+    recreate = false;
+    source = QImage();
+}
+
+void QVGPixmapData::fromNativeType(void* pixmap, NativeType type)
+{
+#if defined(QT_SYMBIAN_SUPPORTS_SGIMAGE) && !defined(QT_NO_EGL)
+    if (type == QPixmapData::SgImage && pixmap) {
+        RSgImage *sgImage = reinterpret_cast<RSgImage*>(pixmap);
+        // when "0" used as argument then
+        // default display, context are used
+        if (!context)
+            context = qt_vg_create_context(0, QInternal::Pixmap);
+
+        destroyImages();
+        prevSize = QSize();
+
+        TInt err = 0;
+
+        RSgDriver driver;
+        err = driver.Open();
+        if (err != KErrNone) {
+            cleanup();
+            return;
+        }
+
+        if (sgImage->IsNull()) {
+            cleanup();
+            driver.Close();
+            return;
+        }
+
+        TSgImageInfo sgImageInfo;
+        err = sgImage->GetInfo(sgImageInfo);
+        if (err != KErrNone) {
+            cleanup();
+            driver.Close();
+            return;
+        }
+
+        pfnEglCreateImageKHR eglCreateImageKHR = (pfnEglCreateImageKHR) eglGetProcAddress("eglCreateImageKHR");
+        pfnEglDestroyImageKHR eglDestroyImageKHR = (pfnEglDestroyImageKHR) eglGetProcAddress("eglDestroyImageKHR");
+        pfnVgCreateEGLImageTargetKHR vgCreateEGLImageTargetKHR = (pfnVgCreateEGLImageTargetKHR) eglGetProcAddress("vgCreateEGLImageTargetKHR");
+
+        if (eglGetError() != EGL_SUCCESS || !eglCreateImageKHR || !eglDestroyImageKHR || !vgCreateEGLImageTargetKHR) {
+            cleanup();
+            driver.Close();
+            return;
+        }
+
+        const EGLint KEglImageAttribs[] = {EGL_IMAGE_PRESERVED_SYMBIAN, EGL_TRUE, EGL_NONE};
+        EGLImageKHR eglImage = eglCreateImageKHR(context->display(),
+                EGL_NO_CONTEXT,
+                EGL_NATIVE_PIXMAP_KHR,
+                (EGLClientBuffer)sgImage,
+                (EGLint*)KEglImageAttribs);
+
+        if (eglGetError() != EGL_SUCCESS) {
+            cleanup();
+            driver.Close();
+            return;
+        }
+
+        vgImage = vgCreateEGLImageTargetKHR(eglImage);
+        if (vgGetError() != VG_NO_ERROR) {
+            cleanup();
+            eglDestroyImageKHR(context->display(), eglImage);
+            driver.Close();
+            return;
+        }
+
+        w = sgImageInfo.iSizeInPixels.iWidth;
+        h = sgImageInfo.iSizeInPixels.iHeight;
+        d = 32; // We always use ARGB_Premultiplied for VG pixmaps.
+        is_null = (w <= 0 || h <= 0);
+        source = QImage();
+        recreate = false;
+        prevSize = QSize(w, h);
+        //setSerialNumber(++qt_vg_pixmap_serial);
+        // release stuff
+        eglDestroyImageKHR(context->display(), eglImage);
+        driver.Close();
+    } else if (type == QPixmapData::FbsBitmap) {
+        CFbsBitmap *bitmap = reinterpret_cast<CFbsBitmap*>(pixmap);
+
+        bool deleteSourceBitmap = false;
+
+#ifdef Q_SYMBIAN_HAS_EXTENDED_BITMAP_TYPE
+
+        // Rasterize extended bitmaps
+
+        TUid extendedBitmapType = bitmap->ExtendedBitmapType();
+        if (extendedBitmapType != KNullUid) {
+            bitmap = createBlitCopy(bitmap);
+            deleteSourceBitmap = true;
+        }
+#endif
+
+        if (bitmap->IsCompressedInRAM()) {
+            bitmap = createBlitCopy(bitmap);
+            deleteSourceBitmap = true;
+        }
+
+        TDisplayMode displayMode = bitmap->DisplayMode();
+        QImage::Format format = qt_TDisplayMode2Format(displayMode);
+
+        TSize size = bitmap->SizeInPixels();
+
+        bitmap->BeginDataAccess();
+        uchar *bytes = (uchar*)bitmap->DataAddress();
+        QImage img = QImage(bytes, size.iWidth, size.iHeight, format);
+        img = img.copy();
+        bitmap->EndDataAccess();
+
+        if(displayMode == EGray2) {
+            //Symbian thinks set pixels are white/transparent, Qt thinks they are foreground/solid
+            //So invert mono bitmaps so that masks work correctly.
+            img.invertPixels();
+        } else if(displayMode == EColor16M) {
+            img = img.rgbSwapped(); // EColor16M is BGR
+        }
+
+        fromImage(img, Qt::AutoColor);
+
+        if(deleteSourceBitmap)
+            delete bitmap;
+    }
+#else
+    Q_UNUSED(pixmap);
+    Q_UNUSED(type);
+#endif
+}
+
+void* QVGPixmapData::toNativeType(NativeType type)
+{
+#if defined(QT_SYMBIAN_SUPPORTS_SGIMAGE) && !defined(QT_NO_EGL)
+    if (type == QPixmapData::SgImage) {
+        toVGImage();
+
+        if (!isValid() || vgImage == VG_INVALID_HANDLE)
+            return 0;
+
+        TInt err = 0;
+
+        RSgDriver driver;
+        err = driver.Open();
+        if (err != KErrNone)
+            return 0;
+
+        TSgImageInfo sgInfo;
+        sgInfo.iPixelFormat = EUidPixelFormatARGB_8888_PRE;
+        sgInfo.iSizeInPixels.SetSize(w, h);
+        sgInfo.iUsage = ESgUsageBitOpenVgImage | ESgUsageBitOpenVgSurface;
+
+        RSgImage *sgImage = q_check_ptr(new RSgImage());
+        err = sgImage->Create(sgInfo, NULL, NULL);
+        if (err != KErrNone) {
+            driver.Close();
+            return 0;
+        }
+
+        pfnEglCreateImageKHR eglCreateImageKHR = (pfnEglCreateImageKHR) eglGetProcAddress("eglCreateImageKHR");
+        pfnEglDestroyImageKHR eglDestroyImageKHR = (pfnEglDestroyImageKHR) eglGetProcAddress("eglDestroyImageKHR");
+        pfnVgCreateEGLImageTargetKHR vgCreateEGLImageTargetKHR = (pfnVgCreateEGLImageTargetKHR) eglGetProcAddress("vgCreateEGLImageTargetKHR");
+
+        if (eglGetError() != EGL_SUCCESS || !eglCreateImageKHR || !eglDestroyImageKHR || !vgCreateEGLImageTargetKHR) {
+            driver.Close();
+            return 0;
+        }
+
+        const EGLint KEglImageAttribs[] = {EGL_IMAGE_PRESERVED_SYMBIAN, EGL_TRUE, EGL_NONE};
+        EGLImageKHR eglImage = eglCreateImageKHR(context->display(),
+                EGL_NO_CONTEXT,
+                EGL_NATIVE_PIXMAP_KHR,
+                (EGLClientBuffer)sgImage,
+                (EGLint*)KEglImageAttribs);
+        if (eglGetError() != EGL_SUCCESS) {
+            sgImage->Close();
+            driver.Close();
+            return 0;
+        }
+
+        VGImage dstVgImage = vgCreateEGLImageTargetKHR(eglImage);
+        if (vgGetError() != VG_NO_ERROR) {
+            eglDestroyImageKHR(context->display(), eglImage);
+            sgImage->Close();
+            driver.Close();
+            return 0;
+        }
+
+        vgCopyImage(dstVgImage, 0, 0,
+                vgImage, 0, 0,
+                w, h, VG_FALSE);
+
+        if (vgGetError() != VG_NO_ERROR) {
+            sgImage->Close();
+            sgImage = 0;
+        }
+        // release stuff
+        vgDestroyImage(dstVgImage);
+        eglDestroyImageKHR(context->display(), eglImage);
+        driver.Close();
+        return reinterpret_cast<void*>(sgImage);
+    } else if (type == QPixmapData::FbsBitmap) {
+                CFbsBitmap *bitmap = q_check_ptr(new CFbsBitmap);
+
+        if (bitmap) {
+            if (bitmap->Create(TSize(source.width(), source.height()),
+                              EColor16MAP) == KErrNone) {
+                const uchar *sptr = qt_vg_imageBits(source);
+                bitmap->BeginDataAccess();
+
+                uchar *dptr = (uchar*)bitmap->DataAddress();
+                Mem::Copy(dptr, sptr, source.byteCount());
+
+                bitmap->EndDataAccess();
+            } else {
+                delete bitmap;
+                bitmap = 0;
+            }
+        }
+
+        return reinterpret_cast<void*>(bitmap);
+    }
+#else
+    Q_UNUSED(type);
+    return 0;
+#endif
+}
+
+void QSymbianVGFontGlyphCache::cacheGlyphs(QVGPaintEnginePrivate *d,
+                                           const QTextItemInt &ti,
+                                           const QVarLengthArray<glyph_t> &glyphs)
+{
+    QFontEngineS60 *fontEngine = static_cast<QFontEngineS60*>(ti.fontEngine);
+    CFont *font = fontEngine->m_font;
+
+    RGlyphDataIterator iter;
+    int err = iter.Open(*font, glyphs.data(), glyphs.count());
+
+//    for (; err == KErrNone; err = iter.Next()) {
+//        const RSgImage& image = iter.Image();
+//        const TRect& rect = iter.Rect();
+//        const TOpenFontCharMetrics& metrics = iter.Metrics();
+//
+//        QPixmap pix = QPixmap::fromSymbianRSgImage(*image);
+//
+//    }
+//    iter.Close();
+//
+//    if (err != KErrNotFound) {
+//        // Handle the error...
+//    }
+}
+
+QT_END_NAMESPACE