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Diffstat (limited to 'widget/windows/nsImageClipboard.cpp')
| -rw-r--r-- | widget/windows/nsImageClipboard.cpp | 497 |
1 files changed, 0 insertions, 497 deletions
diff --git a/widget/windows/nsImageClipboard.cpp b/widget/windows/nsImageClipboard.cpp deleted file mode 100644 index fab62eab5..000000000 --- a/widget/windows/nsImageClipboard.cpp +++ /dev/null @@ -1,497 +0,0 @@ -/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/* 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 "nsImageClipboard.h" - -#include "gfxUtils.h" -#include "mozilla/gfx/2D.h" -#include "mozilla/gfx/DataSurfaceHelpers.h" -#include "mozilla/RefPtr.h" -#include "nsITransferable.h" -#include "nsGfxCIID.h" -#include "nsMemory.h" -#include "prmem.h" -#include "imgIEncoder.h" -#include "nsLiteralString.h" -#include "nsComponentManagerUtils.h" - -#define BFH_LENGTH 14 - -using namespace mozilla; -using namespace mozilla::gfx; - -/* Things To Do 11/8/00 - -Check image metrics, can we support them? Do we need to? -Any other render format? HTML? - -*/ - - -// -// nsImageToClipboard ctor -// -// Given an imgIContainer, convert it to a DIB that is ready to go on the win32 clipboard -// -nsImageToClipboard::nsImageToClipboard(imgIContainer* aInImage, bool aWantDIBV5) - : mImage(aInImage) - , mWantDIBV5(aWantDIBV5) -{ - // nothing to do here -} - - -// -// nsImageToClipboard dtor -// -// Clean up after ourselves. We know that we have created the bitmap -// successfully if we still have a pointer to the header. -// -nsImageToClipboard::~nsImageToClipboard() -{ -} - - -// -// GetPicture -// -// Call to get the actual bits that go on the clipboard. If an error -// ocurred during conversion, |outBits| will be null. -// -// NOTE: The caller owns the handle and must delete it with ::GlobalRelease() -// -nsresult -nsImageToClipboard :: GetPicture ( HANDLE* outBits ) -{ - NS_ASSERTION ( outBits, "Bad parameter" ); - - return CreateFromImage ( mImage, outBits ); - -} // GetPicture - - -// -// CalcSize -// -// Computes # of bytes needed by a bitmap with the specified attributes. -// -int32_t -nsImageToClipboard :: CalcSize ( int32_t aHeight, int32_t aColors, WORD aBitsPerPixel, int32_t aSpanBytes ) -{ - int32_t HeaderMem = sizeof(BITMAPINFOHEADER); - - // add size of pallette to header size - if (aBitsPerPixel < 16) - HeaderMem += aColors * sizeof(RGBQUAD); - - if (aHeight < 0) - aHeight = -aHeight; - - return (HeaderMem + (aHeight * aSpanBytes)); -} - - -// -// CalcSpanLength -// -// Computes the span bytes for determining the overall size of the image -// -int32_t -nsImageToClipboard::CalcSpanLength(uint32_t aWidth, uint32_t aBitCount) -{ - int32_t spanBytes = (aWidth * aBitCount) >> 5; - - if ((aWidth * aBitCount) & 0x1F) - spanBytes++; - spanBytes <<= 2; - - return spanBytes; -} - - -// -// CreateFromImage -// -// Do the work to setup the bitmap header and copy the bits out of the -// image. -// -nsresult -nsImageToClipboard::CreateFromImage ( imgIContainer* inImage, HANDLE* outBitmap ) -{ - nsresult rv; - *outBitmap = nullptr; - - RefPtr<SourceSurface> surface = - inImage->GetFrame(imgIContainer::FRAME_CURRENT, - imgIContainer::FLAG_SYNC_DECODE); - NS_ENSURE_TRUE(surface, NS_ERROR_FAILURE); - - MOZ_ASSERT(surface->GetFormat() == SurfaceFormat::B8G8R8A8 || - surface->GetFormat() == SurfaceFormat::B8G8R8X8); - - RefPtr<DataSourceSurface> dataSurface; - if (surface->GetFormat() == SurfaceFormat::B8G8R8A8) { - dataSurface = surface->GetDataSurface(); - } else { - // XXXjwatt Bug 995923 - get rid of this copy and handle B8G8R8X8 - // directly below once bug 995807 is fixed. - dataSurface = gfxUtils:: - CopySurfaceToDataSourceSurfaceWithFormat(surface, - SurfaceFormat::B8G8R8A8); - } - NS_ENSURE_TRUE(dataSurface, NS_ERROR_FAILURE); - - nsCOMPtr<imgIEncoder> encoder = do_CreateInstance("@mozilla.org/image/encoder;2?type=image/bmp", &rv); - NS_ENSURE_SUCCESS(rv, rv); - - uint32_t format; - nsAutoString options; - if (mWantDIBV5) { - options.AppendLiteral("version=5;bpp="); - } else { - options.AppendLiteral("version=3;bpp="); - } - switch (dataSurface->GetFormat()) { - case SurfaceFormat::B8G8R8A8: - format = imgIEncoder::INPUT_FORMAT_HOSTARGB; - options.AppendInt(32); - break; -#if 0 - // XXXjwatt Bug 995923 - fix |format| and reenable once bug 995807 is fixed. - case SurfaceFormat::B8G8R8X8: - format = imgIEncoder::INPUT_FORMAT_RGB; - options.AppendInt(24); - break; -#endif - default: - NS_NOTREACHED("Unexpected surface format"); - return NS_ERROR_INVALID_ARG; - } - - DataSourceSurface::MappedSurface map; - bool mappedOK = dataSurface->Map(DataSourceSurface::MapType::READ, &map); - NS_ENSURE_TRUE(mappedOK, NS_ERROR_FAILURE); - - rv = encoder->InitFromData(map.mData, 0, - dataSurface->GetSize().width, - dataSurface->GetSize().height, - map.mStride, - format, options); - dataSurface->Unmap(); - NS_ENSURE_SUCCESS(rv, rv); - - uint32_t size; - encoder->GetImageBufferUsed(&size); - NS_ENSURE_TRUE(size > BFH_LENGTH, NS_ERROR_FAILURE); - HGLOBAL glob = ::GlobalAlloc(GMEM_MOVEABLE | GMEM_DDESHARE | GMEM_ZEROINIT, - size - BFH_LENGTH); - if (!glob) - return NS_ERROR_OUT_OF_MEMORY; - - char *dst = (char*) ::GlobalLock(glob); - char *src; - rv = encoder->GetImageBuffer(&src); - NS_ENSURE_SUCCESS(rv, rv); - - ::CopyMemory(dst, src + BFH_LENGTH, size - BFH_LENGTH); - ::GlobalUnlock(glob); - - *outBitmap = (HANDLE)glob; - return NS_OK; -} - -nsImageFromClipboard :: nsImageFromClipboard () -{ - // nothing to do here -} - -nsImageFromClipboard :: ~nsImageFromClipboard ( ) -{ -} - -// -// GetEncodedImageStream -// -// Take the raw clipboard image data and convert it to aMIMEFormat in the form of a nsIInputStream -// -nsresult -nsImageFromClipboard ::GetEncodedImageStream (unsigned char * aClipboardData, const char * aMIMEFormat, nsIInputStream** aInputStream ) -{ - NS_ENSURE_ARG_POINTER (aInputStream); - NS_ENSURE_ARG_POINTER (aMIMEFormat); - nsresult rv; - *aInputStream = nullptr; - - // pull the size information out of the BITMAPINFO header and - // initialize the image - BITMAPINFO* header = (BITMAPINFO *) aClipboardData; - int32_t width = header->bmiHeader.biWidth; - int32_t height = header->bmiHeader.biHeight; - // neg. heights mean the Y axis is inverted and we don't handle that case - NS_ENSURE_TRUE(height > 0, NS_ERROR_FAILURE); - - unsigned char * rgbData = new unsigned char[width * height * 3 /* RGB */]; - - if (rgbData) { - BYTE * pGlobal = (BYTE *) aClipboardData; - // Convert the clipboard image into RGB packed pixel data - rv = ConvertColorBitMap((unsigned char *) (pGlobal + header->bmiHeader.biSize), header, rgbData); - // if that succeeded, encode the bitmap as aMIMEFormat data. Don't return early or we risk leaking rgbData - if (NS_SUCCEEDED(rv)) { - nsAutoCString encoderCID(NS_LITERAL_CSTRING("@mozilla.org/image/encoder;2?type=")); - - // Map image/jpg to image/jpeg (which is how the encoder is registered). - if (strcmp(aMIMEFormat, kJPGImageMime) == 0) - encoderCID.AppendLiteral("image/jpeg"); - else - encoderCID.Append(aMIMEFormat); - nsCOMPtr<imgIEncoder> encoder = do_CreateInstance(encoderCID.get(), &rv); - if (NS_SUCCEEDED(rv)){ - rv = encoder->InitFromData(rgbData, 0, width, height, 3 * width /* RGB * # pixels in a row */, - imgIEncoder::INPUT_FORMAT_RGB, EmptyString()); - if (NS_SUCCEEDED(rv)) { - encoder.forget(aInputStream); - } - } - } - delete [] rgbData; - } - else - rv = NS_ERROR_OUT_OF_MEMORY; - - return rv; -} // GetImage - -// -// InvertRows -// -// Take the image data from the clipboard and invert the rows. Modifying aInitialBuffer in place. -// -void -nsImageFromClipboard::InvertRows(unsigned char * aInitialBuffer, uint32_t aSizeOfBuffer, uint32_t aNumBytesPerRow) -{ - if (!aNumBytesPerRow) - return; - - uint32_t numRows = aSizeOfBuffer / aNumBytesPerRow; - unsigned char * row = new unsigned char[aNumBytesPerRow]; - - uint32_t currentRow = 0; - uint32_t lastRow = (numRows - 1) * aNumBytesPerRow; - while (currentRow < lastRow) - { - // store the current row into a temporary buffer - memcpy(row, &aInitialBuffer[currentRow], aNumBytesPerRow); - memcpy(&aInitialBuffer[currentRow], &aInitialBuffer[lastRow], aNumBytesPerRow); - memcpy(&aInitialBuffer[lastRow], row, aNumBytesPerRow); - lastRow -= aNumBytesPerRow; - currentRow += aNumBytesPerRow; - } - - delete[] row; -} - -// -// ConvertColorBitMap -// -// Takes the clipboard bitmap and converts it into a RGB packed pixel values. -// -nsresult -nsImageFromClipboard::ConvertColorBitMap(unsigned char * aInputBuffer, PBITMAPINFO pBitMapInfo, unsigned char * aOutBuffer) -{ - uint8_t bitCount = pBitMapInfo->bmiHeader.biBitCount; - uint32_t imageSize = pBitMapInfo->bmiHeader.biSizeImage; // may be zero for BI_RGB bitmaps which means we need to calculate by hand - uint32_t bytesPerPixel = bitCount / 8; - - if (bitCount <= 4) - bytesPerPixel = 1; - - // rows are DWORD aligned. Calculate how many real bytes are in each row in the bitmap. This number won't - // correspond to biWidth. - uint32_t rowSize = (bitCount * pBitMapInfo->bmiHeader.biWidth + 7) / 8; // +7 to round up - if (rowSize % 4) - rowSize += (4 - (rowSize % 4)); // Pad to DWORD Boundary - - // if our buffer includes a color map, skip over it - if (bitCount <= 8) - { - int32_t bytesToSkip = (pBitMapInfo->bmiHeader.biClrUsed ? pBitMapInfo->bmiHeader.biClrUsed : (1 << bitCount) ) * sizeof(RGBQUAD); - aInputBuffer += bytesToSkip; - } - - bitFields colorMasks; // only used if biCompression == BI_BITFIELDS - - if (pBitMapInfo->bmiHeader.biCompression == BI_BITFIELDS) - { - // color table consists of 3 DWORDS containing the color masks... - colorMasks.red = (*((uint32_t*)&(pBitMapInfo->bmiColors[0]))); - colorMasks.green = (*((uint32_t*)&(pBitMapInfo->bmiColors[1]))); - colorMasks.blue = (*((uint32_t*)&(pBitMapInfo->bmiColors[2]))); - CalcBitShift(&colorMasks); - aInputBuffer += 3 * sizeof(DWORD); - } - else if (pBitMapInfo->bmiHeader.biCompression == BI_RGB && !imageSize) // BI_RGB can have a size of zero which means we figure it out - { - // XXX: note use rowSize here and not biWidth. rowSize accounts for the DWORD padding for each row - imageSize = rowSize * pBitMapInfo->bmiHeader.biHeight; - } - - // The windows clipboard image format inverts the rows - InvertRows(aInputBuffer, imageSize, rowSize); - - if (!pBitMapInfo->bmiHeader.biCompression || pBitMapInfo->bmiHeader.biCompression == BI_BITFIELDS) - { - uint32_t index = 0; - uint32_t writeIndex = 0; - - unsigned char redValue, greenValue, blueValue; - uint8_t colorTableEntry = 0; - int8_t bit; // used for grayscale bitmaps where each bit is a pixel - uint32_t numPixelsLeftInRow = pBitMapInfo->bmiHeader.biWidth; // how many more pixels do we still need to read for the current row - uint32_t pos = 0; - - while (index < imageSize) - { - switch (bitCount) - { - case 1: - for (bit = 7; bit >= 0 && numPixelsLeftInRow; bit--) - { - colorTableEntry = (aInputBuffer[index] >> bit) & 1; - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[colorTableEntry].rgbRed; - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[colorTableEntry].rgbGreen; - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[colorTableEntry].rgbBlue; - numPixelsLeftInRow--; - } - pos += 1; - break; - case 4: - { - // each aInputBuffer[index] entry contains data for two pixels. - // read the first pixel - colorTableEntry = aInputBuffer[index] >> 4; - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[colorTableEntry].rgbRed; - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[colorTableEntry].rgbGreen; - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[colorTableEntry].rgbBlue; - numPixelsLeftInRow--; - - if (numPixelsLeftInRow) // now read the second pixel - { - colorTableEntry = aInputBuffer[index] & 0xF; - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[colorTableEntry].rgbRed; - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[colorTableEntry].rgbGreen; - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[colorTableEntry].rgbBlue; - numPixelsLeftInRow--; - } - pos += 1; - } - break; - case 8: - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[aInputBuffer[index]].rgbRed; - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[aInputBuffer[index]].rgbGreen; - aOutBuffer[writeIndex++] = pBitMapInfo->bmiColors[aInputBuffer[index]].rgbBlue; - numPixelsLeftInRow--; - pos += 1; - break; - case 16: - { - uint16_t num = 0; - num = (uint8_t) aInputBuffer[index+1]; - num <<= 8; - num |= (uint8_t) aInputBuffer[index]; - - redValue = ((uint32_t) (((float)(num & 0xf800) / 0xf800) * 0xFF0000) & 0xFF0000)>> 16; - greenValue = ((uint32_t)(((float)(num & 0x07E0) / 0x07E0) * 0x00FF00) & 0x00FF00)>> 8; - blueValue = ((uint32_t)(((float)(num & 0x001F) / 0x001F) * 0x0000FF) & 0x0000FF); - - // now we have the right RGB values... - aOutBuffer[writeIndex++] = redValue; - aOutBuffer[writeIndex++] = greenValue; - aOutBuffer[writeIndex++] = blueValue; - numPixelsLeftInRow--; - pos += 2; - } - break; - case 32: - case 24: - if (pBitMapInfo->bmiHeader.biCompression == BI_BITFIELDS) - { - uint32_t val = *((uint32_t*) (aInputBuffer + index) ); - aOutBuffer[writeIndex++] = (val & colorMasks.red) >> colorMasks.redRightShift << colorMasks.redLeftShift; - aOutBuffer[writeIndex++] = (val & colorMasks.green) >> colorMasks.greenRightShift << colorMasks.greenLeftShift; - aOutBuffer[writeIndex++] = (val & colorMasks.blue) >> colorMasks.blueRightShift << colorMasks.blueLeftShift; - numPixelsLeftInRow--; - pos += 4; // we read in 4 bytes of data in order to process this pixel - } - else - { - aOutBuffer[writeIndex++] = aInputBuffer[index+2]; - aOutBuffer[writeIndex++] = aInputBuffer[index+1]; - aOutBuffer[writeIndex++] = aInputBuffer[index]; - numPixelsLeftInRow--; - pos += bytesPerPixel; // 3 bytes for 24 bit data, 4 bytes for 32 bit data (we skip over the 4th byte)... - } - break; - default: - // This is probably the wrong place to check this... - return NS_ERROR_FAILURE; - } - - index += bytesPerPixel; // increment our loop counter - - if (!numPixelsLeftInRow) - { - if (rowSize != pos) - { - // advance index to skip over remaining padding bytes - index += (rowSize - pos); - } - numPixelsLeftInRow = pBitMapInfo->bmiHeader.biWidth; - pos = 0; - } - - } // while we still have bytes to process - } - - return NS_OK; -} - -void nsImageFromClipboard::CalcBitmask(uint32_t aMask, uint8_t& aBegin, uint8_t& aLength) -{ - // find the rightmost 1 - uint8_t pos; - bool started = false; - aBegin = aLength = 0; - for (pos = 0; pos <= 31; pos++) - { - if (!started && (aMask & (1 << pos))) - { - aBegin = pos; - started = true; - } - else if (started && !(aMask & (1 << pos))) - { - aLength = pos - aBegin; - break; - } - } -} - -void nsImageFromClipboard::CalcBitShift(bitFields * aColorMask) -{ - uint8_t begin, length; - // red - CalcBitmask(aColorMask->red, begin, length); - aColorMask->redRightShift = begin; - aColorMask->redLeftShift = 8 - length; - // green - CalcBitmask(aColorMask->green, begin, length); - aColorMask->greenRightShift = begin; - aColorMask->greenLeftShift = 8 - length; - // blue - CalcBitmask(aColorMask->blue, begin, length); - aColorMask->blueRightShift = begin; - aColorMask->blueLeftShift = 8 - length; -} |