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vector: refactor bitmap class

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This commit is contained in:
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 <string>
#include <memory>
#include "vdrawhelper.h"
#include "vglobal.h"
V_BEGIN_NAMESPACE
struct VBitmap::Impl {
uchar * mData{nullptr};
std::unique_ptr<uchar[]> mOwnData{nullptr};
uchar * mRoData{nullptr};
uint mWidth{0};
uint mHeight{0};
uint mStride{0};
uchar mDepth{0};
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)
: mOwnData(true), mRoData(false)
{
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)
{
if (mOwnData && mData) delete[] mData;
mRoData = nullptr;
mWidth = uint(width);
mHeight = uint(height);
mFormat = format;
@ -66,24 +61,9 @@ struct VBitmap::Impl {
mDepth = depth(format);
mStride = ((mWidth * mDepth + 31) >> 5)
<< 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)
{
uchar depth = 1;
@ -108,9 +88,9 @@ struct VBitmap::Impl {
void updateLuma()
{
if (mFormat != VBitmap::Format::ARGB32_Premultiplied) return;
auto dataPtr = data();
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++) {
int alpha = vAlpha(*pixel);
if (alpha == 0) {