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vector: refactor bitmap class

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subhransu mohanty 2019-07-12 15:37:04 +09:00 committed by Subhransu
parent a7e1cd39c8
commit be24fa00c5
1 changed files with 20 additions and 40 deletions
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60
src/vector/vbitmap.cpp
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@ -18,47 +18,42 @@
#include "vbitmap.h" #include "vbitmap.h"
#include <string> #include <string>
#include <memory>
#include "vdrawhelper.h" #include "vdrawhelper.h"
#include "vglobal.h" #include "vglobal.h"
V_BEGIN_NAMESPACE V_BEGIN_NAMESPACE
struct VBitmap::Impl { struct VBitmap::Impl {
uchar * mData{nullptr}; std::unique_ptr<uchar[]> mOwnData{nullptr};
uchar * mRoData{nullptr};
uint mWidth{0}; uint mWidth{0};
uint mHeight{0}; uint mHeight{0};
uint mStride{0}; uint mStride{0};
uchar mDepth{0}; uchar mDepth{0};
VBitmap::Format mFormat{VBitmap::Format::Invalid}; VBitmap::Format mFormat{VBitmap::Format::Invalid};
bool mOwnData;
bool mRoData;
Impl() = delete;
Impl(Impl&&) = delete;
Impl(const Impl&) = delete;
Impl& operator=(Impl&&) = delete;
Impl& operator=(Impl&) = delete;
VRect rect() const
{
return VRect(0, 0, mWidth, mHeight);
}
VSize size() const
{
return VSize(mWidth, mHeight);
}
explicit Impl(size_t width, size_t height, VBitmap::Format format) explicit Impl(size_t width, size_t height, VBitmap::Format format)
: mOwnData(true), mRoData(false)
{ {
reset(width, height, format); reset(width, height, format);
} }
explicit Impl(uchar *data, size_t w, size_t h, size_t bytesPerLine, VBitmap::Format format)
: mRoData(data), mWidth(uint(w)), mHeight(uint(h)), mStride(uint(bytesPerLine)),
mDepth(depth(format)), mFormat(format){}
VRect rect() const { return VRect(0, 0, mWidth, mHeight);}
VSize size() const { return VSize(mWidth, mHeight); }
size_t stride() const { return mStride; }
size_t width() const { return mWidth; }
size_t height() const { return mHeight; }
uchar * data() { return mRoData ? mRoData : mOwnData.get(); }
VBitmap::Format format() const { return mFormat; }
void reset(size_t width, size_t height, VBitmap::Format format) void reset(size_t width, size_t height, VBitmap::Format format)
{ {
if (mOwnData && mData) delete[] mData; mRoData = nullptr;
mWidth = uint(width); mWidth = uint(width);
mHeight = uint(height); mHeight = uint(height);
mFormat = format; mFormat = format;
@ -66,24 +61,9 @@ struct VBitmap::Impl {
mDepth = depth(format); mDepth = depth(format);
mStride = ((mWidth * mDepth + 31) >> 5) mStride = ((mWidth * mDepth + 31) >> 5)
<< 2; // bytes per scanline (must be multiple of 4) << 2; // bytes per scanline (must be multiple of 4)
mData = new uchar[mStride * mHeight]; mOwnData = std::make_unique<uchar[]>(mStride * mHeight);
} }
explicit Impl(uchar *data, size_t w, size_t h, size_t bytesPerLine, VBitmap::Format format)
: mData(data), mWidth(uint(w)), mHeight(uint(h)), mStride(uint(bytesPerLine)),
mDepth(depth(format)), mFormat(format), mOwnData(false), mRoData(false){}
~Impl()
{
if (mOwnData && mData) delete[] mData;
}
size_t stride() const { return mStride; }
size_t width() const { return mWidth; }
size_t height() const { return mHeight; }
VBitmap::Format format() const { return mFormat; }
uchar * data() { return mData; }
static uchar depth(VBitmap::Format format) static uchar depth(VBitmap::Format format)
{ {
uchar depth = 1; uchar depth = 1;
@ -108,9 +88,9 @@ struct VBitmap::Impl {
void updateLuma() void updateLuma()
{ {
if (mFormat != VBitmap::Format::ARGB32_Premultiplied) return; if (mFormat != VBitmap::Format::ARGB32_Premultiplied) return;
auto dataPtr = data();
for (uint col = 0; col < mHeight; col++) { for (uint col = 0; col < mHeight; col++) {
uint *pixel = (uint *)(mData + mStride * col); uint *pixel = (uint *)(dataPtr + mStride * col);
for (uint row = 0; row < mWidth; row++) { for (uint row = 0; row < mWidth; row++) {
int alpha = vAlpha(*pixel); int alpha = vAlpha(*pixel);
if (alpha == 0) { if (alpha == 0) {