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authorwolfbeast <mcwerewolf@wolfbeast.com>2019-02-07 22:06:24 +0100
committerwolfbeast <mcwerewolf@wolfbeast.com>2019-02-07 22:06:24 +0100
commit6992106dc7894fab3f620263e99b4083b36bf9e8 (patch)
tree2a3554cf7bfabfeee0cc56ca58b04773a902cb76 /image/decoders
parent0b6d9a47051be9ef4d064c6f7c60717da91d0bc2 (diff)
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Use existing image decoders to handle clipboard BMP data.
This gets rid of the old nsImageClipboard widget code in favor of using the nsBMPDecoder in imglib.
Diffstat (limited to 'image/decoders')
-rw-r--r--image/decoders/nsBMPDecoder.cpp17
-rw-r--r--image/decoders/nsBMPDecoder.h6
2 files changed, 18 insertions, 5 deletions
diff --git a/image/decoders/nsBMPDecoder.cpp b/image/decoders/nsBMPDecoder.cpp
index 42bb3486a..fc79c223d 100644
--- a/image/decoders/nsBMPDecoder.cpp
+++ b/image/decoders/nsBMPDecoder.cpp
@@ -185,9 +185,11 @@ nsBMPDecoder::nsBMPDecoder(RasterImage* aImage, State aState, size_t aLength)
{
}
-// Constructor for normal BMP files.
-nsBMPDecoder::nsBMPDecoder(RasterImage* aImage)
- : nsBMPDecoder(aImage, State::FILE_HEADER, FILE_HEADER_LENGTH)
+// Constructor for normal BMP files or from the clipboard.
+nsBMPDecoder::nsBMPDecoder(RasterImage* aImage, bool aForClipboard)
+ : nsBMPDecoder(aImage,
+ aForClipboard ? State::CLIPBOARD_HEADER : State::FILE_HEADER,
+ aForClipboard ? BIHSIZE_FIELD_LENGTH : FILE_HEADER_LENGTH)
{
}
@@ -455,6 +457,7 @@ nsBMPDecoder::DoDecode(SourceBufferIterator& aIterator, IResumable* aOnResume)
[=](State aState, const char* aData, size_t aLength) {
switch (aState) {
case State::FILE_HEADER: return ReadFileHeader(aData, aLength);
+ case State::CLIPBOARD_HEADER: return ReadClipboardHeader(aData, aLength);
case State::INFO_HEADER_SIZE: return ReadInfoHeaderSize(aData, aLength);
case State::INFO_HEADER_REST: return ReadInfoHeaderRest(aData, aLength);
case State::BITFIELDS: return ReadBitfields(aData, aLength);
@@ -488,6 +491,14 @@ nsBMPDecoder::ReadFileHeader(const char* aData, size_t aLength)
return Transition::To(State::INFO_HEADER_SIZE, BIHSIZE_FIELD_LENGTH);
}
+LexerTransition<nsBMPDecoder::State>
+nsBMPDecoder::ReadClipboardHeader(const char* aData, size_t aLength)
+{
+ // With the clipboard, the data offset is the header length.
+ mH.mDataOffset = LittleEndian::readUint32(aData);
+ return ReadInfoHeaderSize(aData, aLength);
+}
+
// We read the info header in two steps: (a) read the mBIHSize field to
// determine how long the header is; (b) read the rest of the header.
LexerTransition<nsBMPDecoder::State>
diff --git a/image/decoders/nsBMPDecoder.h b/image/decoders/nsBMPDecoder.h
index 0cf2af689..258381649 100644
--- a/image/decoders/nsBMPDecoder.h
+++ b/image/decoders/nsBMPDecoder.h
@@ -152,6 +152,7 @@ private:
enum class State {
FILE_HEADER,
+ CLIPBOARD_HEADER,
INFO_HEADER_SIZE,
INFO_HEADER_REST,
BITFIELDS,
@@ -164,8 +165,8 @@ private:
RLE_ABSOLUTE
};
- // This is the constructor used for normal BMP images.
- explicit nsBMPDecoder(RasterImage* aImage);
+ // This is the constructor used for normal and clipboard BMP images.
+ explicit nsBMPDecoder(RasterImage* aImage, bool aForClipboard = false);
// This is the constructor used for BMP resources in ICO images.
nsBMPDecoder(RasterImage* aImage, uint32_t aDataOffset);
@@ -180,6 +181,7 @@ private:
void FinishRow();
LexerTransition<State> ReadFileHeader(const char* aData, size_t aLength);
+ LexerTransition<State> ReadClipboardHeader(const char* aData, size_t aLength);
LexerTransition<State> ReadInfoHeaderSize(const char* aData, size_t aLength);
LexerTransition<State> ReadInfoHeaderRest(const char* aData, size_t aLength);
LexerTransition<State> ReadBitfields(const char* aData, size_t aLength);