CBitmap* COrnament::GetImage(void)
{
CDC *pDC = m_pContext->GetDC();
ASSERT(pDC != NULL);
// If the image bitmap is not valid give the current state, free the
// current bitmap and build the new one.
if (ImageNeeded())
{
m_bmImage.DeleteObject();
}
// Check if we need to build a new bitmap.
if (m_bmImage.GetSafeHandle() == NULL)
{
// Create the bitmap for the image.
CRect crImage(0, 0, Max(CurrentState()->m_czExtent.cx, 1), Max(CurrentState()->m_czExtent.cy, 1));
if (m_bmImage.CreateCompatibleBitmap(pDC, crImage.Width(), crImage.Height()))
{
// Create a memory compatible DC and select the new bitmap into it.
CDC ImageDC;
if (ImageDC.CreateCompatibleDC(pDC))
{
CBrush cbTransparent(RGB(0,0,0));
int nContext;
if ((nContext = ImageDC.SaveDC()) != 0)
{
ImageDC.SetMapMode(MM_TEXT);
if (ImageDC.SelectObject(&m_bmImage) != NULL)
{
// Create the image. Pixels that are transparent should be set to sero (black).
ImageDC.FillRect(&crImage, &cbTransparent);
DrawImage(&ImageDC);
ClearImageNeeded();
}
ImageDC.RestoreDC(nContext);
}
}
}
}
m_pContext->ReleaseDC();
ASSERT(m_bmImage.GetSafeHandle() != NULL);
if (m_bmImage.GetSafeHandle() == NULL)
{
return NULL;
}
return &m_bmImage;
}
/** Displays the image view with its current image/ texts.
*/
void
CAImageSelector::display( bool active ) {
CAImageView::display( active );
CL_Rect crAll( 0,0, CA_APP->width, CA_APP->height );
CL_Rect crImage( left,top, right, bottom );
CA_APP->graphicContext->set_cliprect( crImage );
// Animate:
//
float diff = (float)newImage - currentImage;
float numImages2 = (float)numImages/2.0;
bool forward = false;
// Move forward or back?
//
if( (diff < numImages2 && diff > 0.0) ||
(diff < -numImages2) ) {
forward = true;
}
// Correct frame difference:
//
if( diff < -numImages2 ) diff += numImages;
if( diff > numImages2 ) diff -= numImages;
if( forward ) currentImage += fabs( diff ) / 6.0;
else currentImage -= fabs( diff ) / 6.0;
if( currentImage< 0.0 ) currentImage+=(float)numImages;
if( currentImage>(float)numImages ) currentImage-=(float)numImages;
int image1 = (int)floor( currentImage );
int image2 = (int)ceil( currentImage );
if( image2>=numImages ) image2=0;
float rest = currentImage-image1;
int center;
CL_SpriteDescription im1_desc = CL_SpriteDescription();
CL_SpriteDescription im2_desc = CL_SpriteDescription();
im1_desc.add_frame(image[image1].image);
im2_desc.add_frame(image[image2].image);
CL_Sprite im1(*CA_APP->graphicContext,im1_desc);
CL_Sprite im2(*CA_APP->graphicContext,im2_desc);
if( direction==Horizontal ) {
center = (left+right)/2;
int image1Pos = (int)(center - rest*width - image[image1].image.get_width()/2);
im1.draw ( *CA_APP->graphicContext,image1Pos, top+barHeight);
im2.draw ( *CA_APP->graphicContext,image1Pos + width, top+barHeight);
} else {
center = (top+bottom)/2;
int image1Pos = (int)(center - rest*height - image[image1].image.get_height()/2);
im1.draw ( *CA_APP->graphicContext,(left+right-image[image1].image.get_width())/2, image1Pos);
im2.draw ( *CA_APP->graphicContext,(left+right-image[image1].image.get_width())/2, image1Pos + height);
}
displayArrows( active );
CA_APP->graphicContext->set_cliprect( crAll );
}
