#include "UIElipsePhoto.h"
CElipsePhotoUI::CElipsePhotoUI()
{
m_bkGDIPimage = NULL;
}
CElipsePhotoUI::~CElipsePhotoUI()
{
if (m_bkGDIPimage)
{
delete m_bkGDIPimage;
m_bkGDIPimage = NULL;
}
}
using namespace Gdiplus;
Bitmap* CreateBitmapFromHBITMAP(IN HBITMAP hBitmap)
{
BITMAP bmp = { 0 };
if (0 == GetObject(hBitmap, sizeof(BITMAP), (LPVOID)&bmp))
{
return FALSE;
}
// Although we can get bitmap data address by bmp.bmBits member of BITMAP
// which is got by GetObject function sometime,
// we can determine the bitmap data in the HBITMAP is arranged bottom-up
// or top-down, so we should always use GetDIBits to get bitmap data.
BYTE *piexlsSrc = NULL;
LONG cbSize = bmp.bmWidthBytes * bmp.bmHeight;
piexlsSrc = new BYTE[cbSize];
BITMAPINFO bmpInfo = { 0 };
// We should initialize the first six members of BITMAPINFOHEADER structure.
// A bottom-up DIB is specified by setting the height to a positive number,
// while a top-down DIB is specified by setting the height to a negative number.
bmpInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmpInfo.bmiHeader.biWidth = bmp.bmWidth;
bmpInfo.bmiHeader.biHeight = bmp.bmHeight; // 正数，说明数据从下到上，如未负数，则从上到下
bmpInfo.bmiHeader.biPlanes = bmp.bmPlanes;
bmpInfo.bmiHeader.biBitCount = bmp.bmBitsPixel;
bmpInfo.bmiHeader.biCompression = BI_RGB;
HDC hdcScreen = CreateDC(L"DISPLAY", NULL, NULL, NULL);
LONG cbCopied = GetDIBits(hdcScreen, hBitmap, 0, bmp.bmHeight,
piexlsSrc, &bmpInfo, DIB_RGB_COLORS);
DeleteDC(hdcScreen);
if (0 == cbCopied)
{
delete[] piexlsSrc;
return FALSE;
}
// Create an GDI+ Bitmap has the same dimensions with hbitmap
Bitmap *pBitmap = new Bitmap(bmp.bmWidth, bmp.bmHeight, PixelFormat32bppPARGB);
// Access to the Gdiplus::Bitmap's pixel data
BitmapData bitmapData;
Rect rect(0, 0, bmp.bmWidth, bmp.bmHeight);
if (Ok != pBitmap->LockBits(&rect, ImageLockModeRead,
PixelFormat32bppPARGB, &bitmapData))
{
if (pBitmap)
{
delete pBitmap;
pBitmap = NULL;
}
return NULL;
}
BYTE *pixelsDest = (BYTE*)bitmapData.Scan0;
int nLinesize = bmp.bmWidth * sizeof(UINT);
int nHeight = bmp.bmHeight;
// Copy pixel data from HBITMAP by bottom-up.
for (int y = 0; y < nHeight; y++)
{
// 从下到上复制数据，因为前面设置高度时是正数。
memcpy_s(
(pixelsDest + y * nLinesize),
nLinesize,
(piexlsSrc + (nHeight - y - 1) * nLinesize),
nLinesize);
}
// Copy the data in temporary buffer to pBitmap
if (Ok != pBitmap->UnlockBits(&bitmapData))
{
delete pBitmap;
}
delete[] piexlsSrc;
return pBitmap;
}
void CElipsePhotoUI::SetAttribute(LPCTSTR pstrName, LPCTSTR pstrValue)
{
if (_tcscmp(pstrName, _T("bkimage")) == 0)
SetBkImage(pstrValue);
else
return __super::SetAttribute(pstrName, pstrValue);
}
void CElipsePhotoUI::SetBkImage(LPCTSTR pStrImage)
{
__super::SetBkImage(pStrImage);
TImageInfo* data = NULL;
DWORD mask = 0;
data = CRenderEngine::LoadImage(pStrImage, NULL, mask);
if (data)
{
m_bkGDIPimage = CreateBitmapFromHBITMAP(data->hBitmap);
}
delete data;
}
void CElipsePhotoUI::PaintBkImage(HDC hDC)
{
if (m_bkGDIPimage)
{
// 实际的显示大小
int nWidth = this->GetWidth();
int nHeight = this->GetHeight();
RECT rt = this->GetPos();
// 内存位图画板，多留2个像素，避免被边框切掉
Bitmap bitmapTmp(m_bkGDIPimage->GetWidth()+2,m_bkGDIPimage->GetHeight()+2);
Graphics gBig(&bitmapTmp);
Graphics g(hDC);
gBig.SetSmoothingMode(Gdiplus::SmoothingModeHighQuality);
GraphicsPath path(FillModeAlternate);
// 圆形大小
path.AddEllipse(1,1,m_bkGDIPimage->GetWidth(),m_bkGDIPimage->GetHeight());
// 已经将圆形图片画到了gBig上了
gBig.FillPath(&TextureBrush(m_bkGDIPimage), &path);
SmoothingMode mode = g.GetSmoothingMode();
g.SetSmoothingMode(SmoothingMode::SmoothingModeHighQuality);
g.DrawImage(&bitmapTmp, rt.left, rt.top, nWidth, nHeight);
g.SetSmoothingMode(mode);
}
}
