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comparison: image/decoders/icon/qt/nsIconChannel.cpp
image/decoders/icon/qt/nsIconChannel.cpp
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:3361380d7203 |
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| 1 /* vim:set ts=2 sw=2 sts=2 cin et: */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include <QIcon> | |
| 7 | |
| 8 #include <stdlib.h> | |
| 9 #include <unistd.h> | |
| 10 | |
| 11 #include "mozilla/Endian.h" | |
| 12 | |
| 13 #include "nsMimeTypes.h" | |
| 14 #include "nsIMIMEService.h" | |
| 15 | |
| 16 #include "nsIStringBundle.h" | |
| 17 | |
| 18 #include "nsNetUtil.h" | |
| 19 #include "nsIURL.h" | |
| 20 | |
| 21 #include "nsIconChannel.h" | |
| 22 #include "nsGtkQtIconsConverter.h" | |
| 23 | |
| 24 NS_IMPL_ISUPPORTS(nsIconChannel, | |
| 25 nsIRequest, | |
| 26 nsIChannel) | |
| 27 | |
| 28 static nsresult | |
| 29 moz_qicon_to_channel(QImage *image, nsIURI *aURI, | |
| 30 nsIChannel **aChannel) | |
| 31 { | |
| 32 NS_ENSURE_ARG_POINTER(image); | |
| 33 | |
| 34 int width = image->width(); | |
| 35 int height = image->height(); | |
| 36 | |
| 37 NS_ENSURE_TRUE(height < 256 && width < 256 && height > 0 && width > 0, | |
| 38 NS_ERROR_UNEXPECTED); | |
| 39 | |
| 40 const int n_channels = 4; | |
| 41 long int buf_size = 2 + n_channels * height * width; | |
| 42 uint8_t * const buf = (uint8_t*)NS_Alloc(buf_size); | |
| 43 NS_ENSURE_TRUE(buf, NS_ERROR_OUT_OF_MEMORY); | |
| 44 uint8_t *out = buf; | |
| 45 | |
| 46 *(out++) = width; | |
| 47 *(out++) = height; | |
| 48 | |
| 49 const uchar * const pixels = image->bits(); | |
| 50 int rowextra = image->bytesPerLine() - width * n_channels; | |
| 51 | |
| 52 // encode the RGB data and the A data | |
| 53 const uchar * in = pixels; | |
| 54 for (int y = 0; y < height; ++y, in += rowextra) { | |
| 55 for (int x = 0; x < width; ++x) { | |
| 56 uint8_t r = *(in++); | |
| 57 uint8_t g = *(in++); | |
| 58 uint8_t b = *(in++); | |
| 59 uint8_t a = *(in++); | |
| 60 #define DO_PREMULTIPLY(c_) uint8_t(uint16_t(c_) * uint16_t(a) / uint16_t(255)) | |
| 61 #if MOZ_LITTLE_ENDIAN | |
| 62 *(out++) = DO_PREMULTIPLY(b); | |
| 63 *(out++) = DO_PREMULTIPLY(g); | |
| 64 *(out++) = DO_PREMULTIPLY(r); | |
| 65 *(out++) = a; | |
| 66 #else | |
| 67 *(out++) = a; | |
| 68 *(out++) = DO_PREMULTIPLY(r); | |
| 69 *(out++) = DO_PREMULTIPLY(g); | |
| 70 *(out++) = DO_PREMULTIPLY(b); | |
| 71 #endif | |
| 72 #undef DO_PREMULTIPLY | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 NS_ASSERTION(out == buf + buf_size, "size miscalculation"); | |
| 77 | |
| 78 nsresult rv; | |
| 79 nsCOMPtr<nsIStringInputStream> stream = | |
| 80 do_CreateInstance("@mozilla.org/io/string-input-stream;1", &rv); | |
| 81 NS_ENSURE_SUCCESS(rv, rv); | |
| 82 | |
| 83 rv = stream->AdoptData((char*)buf, buf_size); | |
| 84 NS_ENSURE_SUCCESS(rv, rv); | |
| 85 | |
| 86 return NS_NewInputStreamChannel(aChannel, aURI, stream, | |
| 87 NS_LITERAL_CSTRING(IMAGE_ICON_MS)); | |
| 88 } | |
| 89 | |
| 90 nsresult | |
| 91 nsIconChannel::Init(nsIURI* aURI) | |
| 92 { | |
| 93 | |
| 94 nsCOMPtr<nsIMozIconURI> iconURI = do_QueryInterface(aURI); | |
| 95 NS_ASSERTION(iconURI, "URI is not an nsIMozIconURI"); | |
| 96 | |
| 97 nsAutoCString stockIcon; | |
| 98 iconURI->GetStockIcon(stockIcon); | |
| 99 | |
| 100 nsAutoCString iconSizeString; | |
| 101 iconURI->GetIconSize(iconSizeString); | |
| 102 | |
| 103 uint32_t desiredImageSize; | |
| 104 iconURI->GetImageSize(&desiredImageSize); | |
| 105 | |
| 106 nsAutoCString iconStateString; | |
| 107 iconURI->GetIconState(iconStateString); | |
| 108 bool disabled = iconStateString.EqualsLiteral("disabled"); | |
| 109 | |
| 110 // This is a workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=662299 | |
| 111 // Try to find corresponding freedesktop icon and fallback to empty QIcon if failed. | |
| 112 QIcon icon = QIcon::fromTheme(QString(stockIcon.get()).replace("gtk-", "edit-")); | |
| 113 QPixmap pixmap = icon.pixmap(desiredImageSize, desiredImageSize, disabled ? QIcon::Disabled : QIcon::Normal); | |
| 114 | |
| 115 QImage image = pixmap.toImage(); | |
| 116 | |
| 117 return moz_qicon_to_channel(&image, iconURI, | |
| 118 getter_AddRefs(mRealChannel)); | |
| 119 } |
