1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/image/decoders/icon/qt/nsIconChannel.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,119 @@
1.4 +/* vim:set ts=2 sw=2 sts=2 cin et: */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include <QIcon>
1.10 +
1.11 +#include <stdlib.h>
1.12 +#include <unistd.h>
1.13 +
1.14 +#include "mozilla/Endian.h"
1.15 +
1.16 +#include "nsMimeTypes.h"
1.17 +#include "nsIMIMEService.h"
1.18 +
1.19 +#include "nsIStringBundle.h"
1.20 +
1.21 +#include "nsNetUtil.h"
1.22 +#include "nsIURL.h"
1.23 +
1.24 +#include "nsIconChannel.h"
1.25 +#include "nsGtkQtIconsConverter.h"
1.26 +
1.27 +NS_IMPL_ISUPPORTS(nsIconChannel,
1.28 + nsIRequest,
1.29 + nsIChannel)
1.30 +
1.31 +static nsresult
1.32 +moz_qicon_to_channel(QImage *image, nsIURI *aURI,
1.33 + nsIChannel **aChannel)
1.34 +{
1.35 + NS_ENSURE_ARG_POINTER(image);
1.36 +
1.37 + int width = image->width();
1.38 + int height = image->height();
1.39 +
1.40 + NS_ENSURE_TRUE(height < 256 && width < 256 && height > 0 && width > 0,
1.41 + NS_ERROR_UNEXPECTED);
1.42 +
1.43 + const int n_channels = 4;
1.44 + long int buf_size = 2 + n_channels * height * width;
1.45 + uint8_t * const buf = (uint8_t*)NS_Alloc(buf_size);
1.46 + NS_ENSURE_TRUE(buf, NS_ERROR_OUT_OF_MEMORY);
1.47 + uint8_t *out = buf;
1.48 +
1.49 + *(out++) = width;
1.50 + *(out++) = height;
1.51 +
1.52 + const uchar * const pixels = image->bits();
1.53 + int rowextra = image->bytesPerLine() - width * n_channels;
1.54 +
1.55 + // encode the RGB data and the A data
1.56 + const uchar * in = pixels;
1.57 + for (int y = 0; y < height; ++y, in += rowextra) {
1.58 + for (int x = 0; x < width; ++x) {
1.59 + uint8_t r = *(in++);
1.60 + uint8_t g = *(in++);
1.61 + uint8_t b = *(in++);
1.62 + uint8_t a = *(in++);
1.63 +#define DO_PREMULTIPLY(c_) uint8_t(uint16_t(c_) * uint16_t(a) / uint16_t(255))
1.64 +#if MOZ_LITTLE_ENDIAN
1.65 + *(out++) = DO_PREMULTIPLY(b);
1.66 + *(out++) = DO_PREMULTIPLY(g);
1.67 + *(out++) = DO_PREMULTIPLY(r);
1.68 + *(out++) = a;
1.69 +#else
1.70 + *(out++) = a;
1.71 + *(out++) = DO_PREMULTIPLY(r);
1.72 + *(out++) = DO_PREMULTIPLY(g);
1.73 + *(out++) = DO_PREMULTIPLY(b);
1.74 +#endif
1.75 +#undef DO_PREMULTIPLY
1.76 + }
1.77 + }
1.78 +
1.79 + NS_ASSERTION(out == buf + buf_size, "size miscalculation");
1.80 +
1.81 + nsresult rv;
1.82 + nsCOMPtr<nsIStringInputStream> stream =
1.83 + do_CreateInstance("@mozilla.org/io/string-input-stream;1", &rv);
1.84 + NS_ENSURE_SUCCESS(rv, rv);
1.85 +
1.86 + rv = stream->AdoptData((char*)buf, buf_size);
1.87 + NS_ENSURE_SUCCESS(rv, rv);
1.88 +
1.89 + return NS_NewInputStreamChannel(aChannel, aURI, stream,
1.90 + NS_LITERAL_CSTRING(IMAGE_ICON_MS));
1.91 +}
1.92 +
1.93 +nsresult
1.94 +nsIconChannel::Init(nsIURI* aURI)
1.95 +{
1.96 +
1.97 + nsCOMPtr<nsIMozIconURI> iconURI = do_QueryInterface(aURI);
1.98 + NS_ASSERTION(iconURI, "URI is not an nsIMozIconURI");
1.99 +
1.100 + nsAutoCString stockIcon;
1.101 + iconURI->GetStockIcon(stockIcon);
1.102 +
1.103 + nsAutoCString iconSizeString;
1.104 + iconURI->GetIconSize(iconSizeString);
1.105 +
1.106 + uint32_t desiredImageSize;
1.107 + iconURI->GetImageSize(&desiredImageSize);
1.108 +
1.109 + nsAutoCString iconStateString;
1.110 + iconURI->GetIconState(iconStateString);
1.111 + bool disabled = iconStateString.EqualsLiteral("disabled");
1.112 +
1.113 + // This is a workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=662299
1.114 + // Try to find corresponding freedesktop icon and fallback to empty QIcon if failed.
1.115 + QIcon icon = QIcon::fromTheme(QString(stockIcon.get()).replace("gtk-", "edit-"));
1.116 + QPixmap pixmap = icon.pixmap(desiredImageSize, desiredImageSize, disabled ? QIcon::Disabled : QIcon::Normal);
1.117 +
1.118 + QImage image = pixmap.toImage();
1.119 +
1.120 + return moz_qicon_to_channel(&image, iconURI,
1.121 + getter_AddRefs(mRealChannel));
1.122 +}
