Add m-esr52 at 52.6.0

1 files changed, 497 insertions, 0 deletions

diff --git a/widget/windows/nsImageClipboard.cpp b/widget/windows/nsImageClipboard.cpp
new file mode 100644
index 000000000..fab62eab5
--- /dev/null
+++ b/widget/windows/nsImageClipboard.cpp
@@ -0,0 +1,497 @@
+/* -*- 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;
+}