rainmeter-studio/Common/Gfx/Util/WICBitmapDIB.cpp

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/*
Copyright (C) 2013 Birunthan Mohanathas
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
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#include "StdAfx.h"
#include "WICBitmapDIB.h"
#include "WICBitmapLockDIB.h"
namespace Gfx {
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namespace Util {
WICBitmapDIB::WICBitmapDIB() :
m_DIBSectionBuffer(),
m_DIBSectionBufferPixels(),
m_W(0),
m_H(0)
{
}
WICBitmapDIB::~WICBitmapDIB()
{
if (m_DIBSectionBuffer)
{
DeleteObject(m_DIBSectionBuffer);
m_DIBSectionBufferPixels = nullptr;
}
}
void WICBitmapDIB::Resize(UINT w, UINT h)
{
if (m_DIBSectionBuffer)
{
DeleteObject(m_DIBSectionBuffer);
m_DIBSectionBufferPixels = nullptr;
}
m_W = w;
m_H = h;
BITMAPV4HEADER bh = {sizeof(BITMAPV4HEADER)};
bh.bV4Width = (LONG)m_W;
bh.bV4Height = -(LONG)m_H; // Top-down DIB
bh.bV4Planes = 1;
bh.bV4BitCount = 32;
bh.bV4V4Compression = BI_BITFIELDS;
bh.bV4RedMask = 0x00FF0000;
bh.bV4GreenMask = 0x0000FF00;
bh.bV4BlueMask = 0x000000FF;
bh.bV4AlphaMask = 0xFF000000;
m_DIBSectionBuffer = CreateDIBSection(
nullptr,
(BITMAPINFO*)&bh,
DIB_RGB_COLORS,
(void**)&m_DIBSectionBufferPixels,
nullptr,
0);
assert(m_DIBSectionBufferPixels);
}
IFACEMETHODIMP WICBitmapDIB::QueryInterface(REFIID riid, void** ppvObject)
{
return E_NOTIMPL;
}
IFACEMETHODIMP_(ULONG) WICBitmapDIB::AddRef()
{
return 0;
}
IFACEMETHODIMP_(ULONG) WICBitmapDIB::Release()
{
return 0;
}
IFACEMETHODIMP WICBitmapDIB::GetSize(UINT* puiWidth, UINT* puiHeight)
{
if (puiWidth) *puiWidth = m_W;
if (puiHeight) *puiHeight = m_H;
return S_OK;
}
IFACEMETHODIMP WICBitmapDIB::GetPixelFormat(WICPixelFormatGUID* pPixelFormat)
{
*pPixelFormat = GUID_WICPixelFormat32bppPBGRA;
return S_OK;
}
IFACEMETHODIMP WICBitmapDIB::GetResolution(double* pDpiX, double* pDpiY)
{
return E_NOTIMPL;
}
IFACEMETHODIMP WICBitmapDIB::CopyPalette(IWICPalette* pIPalette)
{
return E_NOTIMPL;
}
IFACEMETHODIMP WICBitmapDIB::CopyPixels(const WICRect* prc, UINT cbStride, UINT cbBufferSize, BYTE* pbBuffer)
{
return E_NOTIMPL;
}
IFACEMETHODIMP WICBitmapDIB::Lock(const WICRect* prcLock, DWORD flags, IWICBitmapLock** ppILock)
{
if (ppILock) *ppILock = (IWICBitmapLock*)new WICBitmapLockDIB(this, prcLock);
return S_OK;
}
IFACEMETHODIMP WICBitmapDIB::SetPalette(IWICPalette* pIPalette)
{
return E_NOTIMPL;
}
IFACEMETHODIMP WICBitmapDIB::SetResolution(double dpiX, double dpiY)
{
return E_NOTIMPL;
}
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} // namespace Util
} // namespace Gfx