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tenfourfox/widget/qt/nsClipboard.cpp

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <QGuiApplication>
#include <QMimeData>
#include <QString>
#include <QStringList>
#include <QByteArray>
#include <QImage>
#include <QImageWriter>
#include <QBuffer>
#include "gfxPlatform.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/gfx/2D.h"
#include "nsClipboard.h"
#include "nsISupportsPrimitives.h"
#include "nsXPIDLString.h"
#include "nsPrimitiveHelpers.h"
#include "nsIInputStream.h"
#include "nsReadableUtils.h"
#include "nsStringStream.h"
#include "nsComponentManagerUtils.h"
#include "imgIContainer.h"
using namespace mozilla;
using namespace mozilla::gfx;
NS_IMPL_ISUPPORTS(nsClipboard, nsIClipboard)
//-------------------------------------------------------------------------
//
// nsClipboard constructor
//
//-------------------------------------------------------------------------
nsClipboard::nsClipboard() : nsIClipboard(),
mSelectionOwner(nullptr),
mGlobalOwner(nullptr),
mSelectionTransferable(nullptr),
mGlobalTransferable(nullptr)
{
// No implementation needed
}
//-------------------------------------------------------------------------
//
// nsClipboard destructor
//
//-------------------------------------------------------------------------
nsClipboard::~nsClipboard()
{
}
static inline QImage::Format
_moz2dformat_to_qformat(SurfaceFormat aFormat)
{
switch (aFormat) {
case SurfaceFormat::B8G8R8A8:
return QImage::Format_ARGB32_Premultiplied;
case SurfaceFormat::B8G8R8X8:
return QImage::Format_ARGB32;
case SurfaceFormat::R5G6B5_UINT16:
return QImage::Format_RGB16;
default:
return QImage::Format_Invalid;
}
}
// nsClipboard::SetNativeClipboardData ie. Copy
NS_IMETHODIMP
nsClipboard::SetNativeClipboardData( nsITransferable *aTransferable,
QClipboard::Mode clipboardMode )
{
if (nullptr == aTransferable)
{
NS_WARNING("nsClipboard::SetNativeClipboardData(): no transferable!");
return NS_ERROR_FAILURE;
}
// get flavor list that includes all flavors that can be written (including
// ones obtained through conversion)
nsCOMPtr<nsISupportsArray> flavorList;
nsresult rv = aTransferable->FlavorsTransferableCanExport( getter_AddRefs(flavorList) );
if (NS_FAILED(rv))
{
NS_WARNING("nsClipboard::SetNativeClipboardData(): no FlavorsTransferable !");
return NS_ERROR_FAILURE;
}
QClipboard *cb = QGuiApplication::clipboard();
QMimeData *mimeData = new QMimeData;
uint32_t flavorCount = 0;
flavorList->Count(&flavorCount);
bool imageAdded = false;
for (uint32_t i = 0; i < flavorCount; ++i)
{
nsCOMPtr<nsISupports> genericFlavor;
flavorList->GetElementAt(i,getter_AddRefs(genericFlavor));
nsCOMPtr<nsISupportsCString> currentFlavor(do_QueryInterface(genericFlavor));
if (currentFlavor)
{
// flavorStr is the mime type
nsXPIDLCString flavorStr;
currentFlavor->ToString(getter_Copies(flavorStr));
// Clip is the data which will be sent to the clipboard
nsCOMPtr<nsISupports> clip;
// len is the length of the data
uint32_t len;
// Unicode text?
if (!strcmp(flavorStr.get(), kUnicodeMime))
{
rv = aTransferable->GetTransferData(flavorStr,getter_AddRefs(clip),&len);
nsCOMPtr<nsISupportsString> wideString;
wideString = do_QueryInterface(clip);
if (!wideString || NS_FAILED(rv))
continue;
nsAutoString utf16string;
wideString->GetData(utf16string);
QString str = QString::fromUtf16((const ushort*)utf16string.get());
// Add text to the mimeData
mimeData->setText(str);
}
// html?
else if (!strcmp(flavorStr.get(), kHTMLMime))
{
rv = aTransferable->GetTransferData(flavorStr,getter_AddRefs(clip),&len);
nsCOMPtr<nsISupportsString> wideString;
wideString = do_QueryInterface(clip);
if (!wideString || NS_FAILED(rv))
continue;
nsAutoString utf16string;
wideString->GetData(utf16string);
QString str = QString::fromUtf16((const ushort*)utf16string.get());
// Add html to the mimeData
mimeData->setHtml(str);
}
// image?
else if (!imageAdded // image is added only once to the clipboard
&& (!strcmp(flavorStr.get(), kNativeImageMime)
|| !strcmp(flavorStr.get(), kPNGImageMime)
|| !strcmp(flavorStr.get(), kJPEGImageMime)
|| !strcmp(flavorStr.get(), kJPGImageMime)
|| !strcmp(flavorStr.get(), kGIFImageMime))
)
{
// Look through our transfer data for the image
static const char* const imageMimeTypes[] = {
kNativeImageMime, kPNGImageMime, kJPEGImageMime, kJPGImageMime, kGIFImageMime };
nsCOMPtr<nsISupportsInterfacePointer> ptrPrimitive;
for (uint32_t i = 0; !ptrPrimitive && i < ArrayLength(imageMimeTypes); i++)
{
aTransferable->GetTransferData(imageMimeTypes[i], getter_AddRefs(clip), &len);
ptrPrimitive = do_QueryInterface(clip);
}
if (!ptrPrimitive)
continue;
nsCOMPtr<nsISupports> primitiveData;
ptrPrimitive->GetData(getter_AddRefs(primitiveData));
nsCOMPtr<imgIContainer> image(do_QueryInterface(primitiveData));
if (!image) // Not getting an image for an image mime type!?
continue;
RefPtr<SourceSurface> surface =
image->GetFrame(imgIContainer::FRAME_CURRENT,
imgIContainer::FLAG_SYNC_DECODE);
if (!surface)
continue;
RefPtr<DataSourceSurface> dataSurface =
surface->GetDataSurface();
if (!dataSurface)
continue;
DataSourceSurface::MappedSurface map;
if (!dataSurface->Map(DataSourceSurface::MapType::READ, &map))
continue;
QImage qImage(map.mData,
dataSurface->GetSize().width,
dataSurface->GetSize().height,
map.mStride,
_moz2dformat_to_qformat(dataSurface->GetFormat()));
dataSurface->Unmap();
// Add image to the mimeData
mimeData->setImageData(qImage);
imageAdded = true;
}
// Other flavors, adding data to clipboard "as is"
else
{
rv = aTransferable->GetTransferData(flavorStr.get(), getter_AddRefs(clip), &len);
// nothing found?
if (!clip || NS_FAILED(rv))
continue;
void *primitive_data = nullptr;
nsPrimitiveHelpers::CreateDataFromPrimitive(flavorStr.get(), clip,
&primitive_data, len);
if (primitive_data)
{
QByteArray data ((const char *)primitive_data, len);
// Add data to the mimeData
mimeData->setData(flavorStr.get(), data);
free(primitive_data);
}
}
}
}
// If we have some mime data, add it to the clipboard
if(!mimeData->formats().isEmpty())
cb->setMimeData(mimeData, clipboardMode);
else
delete mimeData;
return NS_OK;
}
// nsClipboard::GetNativeClipboardData ie. Paste
//
NS_IMETHODIMP
nsClipboard::GetNativeClipboardData(nsITransferable *aTransferable,
QClipboard::Mode clipboardMode)
{
if (nullptr == aTransferable)
{
NS_WARNING("GetNativeClipboardData: Transferable is null!");
return NS_ERROR_FAILURE;
}
// get flavor list that includes all acceptable flavors (including
// ones obtained through conversion)
nsCOMPtr<nsISupportsArray> flavorList;
nsresult errCode = aTransferable->FlavorsTransferableCanImport(
getter_AddRefs(flavorList));
if (NS_FAILED(errCode))
{
NS_WARNING("nsClipboard::GetNativeClipboardData(): no FlavorsTransferable!");
return NS_ERROR_FAILURE;
}
QClipboard *cb = QGuiApplication::clipboard();
const QMimeData *mimeData = cb->mimeData(clipboardMode);
// Walk through flavors and see which flavor matches the one being pasted
uint32_t flavorCount;
flavorList->Count(&flavorCount);
nsAutoCString foundFlavor;
for (uint32_t i = 0; i < flavorCount; ++i)
{
nsCOMPtr<nsISupports> genericFlavor;
flavorList->GetElementAt(i,getter_AddRefs(genericFlavor));
nsCOMPtr<nsISupportsCString> currentFlavor(do_QueryInterface( genericFlavor) );
if (currentFlavor)
{
nsXPIDLCString flavorStr;
currentFlavor->ToString(getter_Copies(flavorStr));
// Ok, so which flavor the data being pasted could be?
// Text?
if (!strcmp(flavorStr.get(), kUnicodeMime) && mimeData->hasText())
{
// Clipboard has text and flavor accepts text, so lets
// handle the data as text
foundFlavor = nsAutoCString(flavorStr);
// Get the text data from clipboard
QString text = mimeData->text();
const QChar *unicode = text.unicode();
// Is there a more correct way to get the size in UTF16?
uint32_t len = (uint32_t) 2*text.size();
// And then to genericDataWrapper
nsCOMPtr<nsISupports> genericDataWrapper;
nsPrimitiveHelpers::CreatePrimitiveForData(
foundFlavor.get(),
(void*)unicode,
len,
getter_AddRefs(genericDataWrapper));
// Data is good, set it to the transferable
aTransferable->SetTransferData(foundFlavor.get(),
genericDataWrapper,len);
// And thats all
break;
}
// html?
if (!strcmp(flavorStr.get(), kHTMLMime) && mimeData->hasHtml())
{
// Clipboard has text/html and flavor accepts text/html, so lets
// handle the data as text/html
foundFlavor = nsAutoCString(flavorStr);
// Get the text data from clipboard
QString html = mimeData->html();
const QChar *unicode = html.unicode();
// Is there a more correct way to get the size in UTF16?
uint32_t len = (uint32_t) 2*html.size();
// And then to genericDataWrapper
nsCOMPtr<nsISupports> genericDataWrapper;
nsPrimitiveHelpers::CreatePrimitiveForData(
foundFlavor.get(),
(void*)unicode,
len,
getter_AddRefs(genericDataWrapper));
// Data is good, set it to the transferable
aTransferable->SetTransferData(foundFlavor.get(),
genericDataWrapper,len);
// And thats all
break;
}
// Image?
if (( !strcmp(flavorStr.get(), kJPEGImageMime)
|| !strcmp(flavorStr.get(), kJPGImageMime)
|| !strcmp(flavorStr.get(), kPNGImageMime)
|| !strcmp(flavorStr.get(), kGIFImageMime))
&& mimeData->hasImage())
{
// Try to retrieve an image from clipboard
QImage image = cb->image();
if(image.isNull())
continue;
// Lets set the image format
QByteArray imageFormat;
if (!strcmp(flavorStr.get(), kJPEGImageMime) || !strcmp(flavorStr.get(), kJPGImageMime))
imageFormat = "jpeg";
else if (!strcmp(flavorStr.get(), kPNGImageMime))
imageFormat = "png";
else if (!strcmp(flavorStr.get(), kGIFImageMime))
imageFormat = "gif";
else
continue;
// Write image from clippboard to a QByteArrayBuffer
QByteArray imageData;
QBuffer imageBuffer(&imageData);
QImageWriter imageWriter(&imageBuffer, imageFormat);
if(!imageWriter.write(image))
continue;
// Add the data to inputstream
nsCOMPtr<nsIInputStream> byteStream;
NS_NewByteInputStream(getter_AddRefs(byteStream), imageData.constData(),
imageData.size(), NS_ASSIGNMENT_COPY);
// Data is good, set it to the transferable
aTransferable->SetTransferData(flavorStr, byteStream, sizeof(nsIInputStream*));
imageBuffer.close();
// And thats all
break;
}
// Other mimetype?
// Trying to forward the data "as is"
if(mimeData->hasFormat(flavorStr.get()))
{
// get the data from the clipboard
QByteArray clipboardData = mimeData->data(flavorStr.get());
// And add it to genericDataWrapper
nsCOMPtr<nsISupports> genericDataWrapper;
nsPrimitiveHelpers::CreatePrimitiveForData(
foundFlavor.get(),
(void*) clipboardData.data(),
clipboardData.size(),
getter_AddRefs(genericDataWrapper));
// Data is good, set it to the transferable
aTransferable->SetTransferData(foundFlavor.get(),
genericDataWrapper,clipboardData.size());
// And thats all
break;
}
}
}
return NS_OK;
}
NS_IMETHODIMP
nsClipboard::HasDataMatchingFlavors(const char** aFlavorList, uint32_t aLength,
int32_t aWhichClipboard, bool *_retval)
{
*_retval = false;
if (aWhichClipboard != kGlobalClipboard)
return NS_OK;
// Which kind of data in the clipboard
QClipboard *cb = QGuiApplication::clipboard();
const QMimeData *mimeData = cb->mimeData();
const char *flavor=nullptr;
QStringList formats = mimeData->formats();
for (uint32_t i = 0; i < aLength; ++i)
{
flavor = aFlavorList[i];
if (flavor)
{
QString qflavor(flavor);
if (strcmp(flavor,kTextMime) == 0)
{
NS_WARNING("DO NOT USE THE text/plain DATA FLAVOR ANY MORE. USE text/unicode INSTEAD");
}
// QClipboard says it has text/plain, mozilla wants to
// know if the data is text/unicode -> interpret text/plain to text/unicode
if (formats.contains(qflavor) ||
strcmp(flavor, kUnicodeMime) == 0)
{
// A match has been found, return'
*_retval = true;
break;
}
}
}
return NS_OK;
}
/**
* Sets the transferable object
*/
NS_IMETHODIMP
nsClipboard::SetData(nsITransferable *aTransferable,
nsIClipboardOwner *aOwner,
int32_t aWhichClipboard)
{
// See if we can short cut
if (
(aWhichClipboard == kGlobalClipboard
&& aTransferable == mGlobalTransferable.get()
&& aOwner == mGlobalOwner.get()
)
||
(aWhichClipboard == kSelectionClipboard
&& aTransferable == mSelectionTransferable.get()
&& aOwner == mSelectionOwner.get()
)
)
{
return NS_OK;
}
EmptyClipboard(aWhichClipboard);
QClipboard::Mode mode;
if (kGlobalClipboard == aWhichClipboard)
{
mGlobalOwner = aOwner;
mGlobalTransferable = aTransferable;
mode = QClipboard::Clipboard;
}
else
{
mSelectionOwner = aOwner;
mSelectionTransferable = aTransferable;
mode = QClipboard::Selection;
}
return SetNativeClipboardData( aTransferable, mode );
}
/**
* Gets the transferable object
*/
NS_IMETHODIMP
nsClipboard::GetData(nsITransferable *aTransferable, int32_t aWhichClipboard)
{
if (nullptr != aTransferable)
{
QClipboard::Mode mode;
if (kGlobalClipboard == aWhichClipboard)
{
mode = QClipboard::Clipboard;
}
else
{
mode = QClipboard::Selection;
}
return GetNativeClipboardData(aTransferable, mode);
}
else
{
NS_WARNING("nsClipboard::GetData(), aTransferable is NULL.");
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsClipboard::EmptyClipboard(int32_t aWhichClipboard)
{
if (aWhichClipboard == kSelectionClipboard)
{
if (mSelectionOwner)
{
mSelectionOwner->LosingOwnership(mSelectionTransferable);
mSelectionOwner = nullptr;
}
mSelectionTransferable = nullptr;
}
else
{
if (mGlobalOwner)
{
mGlobalOwner->LosingOwnership(mGlobalTransferable);
mGlobalOwner = nullptr;
}
mGlobalTransferable = nullptr;
}
return NS_OK;
}
NS_IMETHODIMP
nsClipboard::SupportsSelectionClipboard(bool *_retval)
{
NS_ENSURE_ARG_POINTER(_retval);
QClipboard *cb = QGuiApplication::clipboard();
if (cb->supportsSelection())
{
*_retval = true; // we support the selection clipboard
}
else
{
*_retval = false;
}
return NS_OK;
}
NS_IMETHODIMP
nsClipboard::SupportsFindClipboard(bool* _retval)
{
NS_ENSURE_ARG_POINTER(_retval);
*_retval = false;
return NS_OK;
}
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