// draw_view
static void draw_view(image_view const& vw, wx_window * wxwin)
{
// create paint DC
wxPaintDC dc(wxwin->win);
// clip view if neccessary
int w = vw.width(), h = vw.height();
image_view sub_vw;
// clip view
if (wxwin->is_toplevel)
{
sub_vw = vw;
}
else
{
if (wx_window * parent = static_cast<wx_window *>(wxwin->parent))
{
w = std::min(w, parent->width - wxwin->x);
h = std::min(h, parent->height - wxwin->y);
}
int tlx = 0, tly = 0;
if (wxwin->x < 0)
{
tlx += -wxwin->x;
w -= -wxwin->x;
}
if (wxwin->y < 0)
{
tly += -wxwin->y;
w -= -wxwin->y;
}
sub_vw = image_view(w, h, vw.xy_at(tlx, tly));
}
// FIXME: too slow
// copy into wxBitmap
wxImage wximg(sub_vw.width(), sub_vw.height());
boost::gil::copy_pixels(
sub_vw, boost::gil::interleaved_view(
wximg.GetWidth(), wximg.GetHeight(),
(boost::gil::rgb8_pixel_t *) wximg.GetData(), wximg.GetWidth() * 3
)
);
wxBitmap bmp(wximg);
// draw onto the screen
dc.DrawBitmap(bmp, 0, 0, false);
}
static void draw_view(image_view const& vw, msw_window * mswwin)
{
// create dc
HDC hdc = ::GetDC(mswwin->handle);
// clip view
int w = vw.width(), h = vw.height();
image_view sub_vw;
// clip view
if (mswwin->is_toplevel)
{
sub_vw = vw;
}
else
{
if (msw_window * parent = static_cast<msw_window *>(mswwin->parent))
{
w = std::min(w, parent->width - mswwin->x);
h = std::min(h, parent->height - mswwin->y);
}
int tlx = 0, tly = 0;
if (mswwin->x < 0)
{
tlx += -mswwin->x;
w -= -mswwin->x;
}
if (mswwin->y < 0)
{
tly += -mswwin->y;
w -= -mswwin->y;
}
sub_vw = image_view(w, h, vw.xy_at(tlx, tly));
}
// create the BITMAPINFO structure
BITMAPINFO bmi;
memset(&bmi, 0, sizeof(BITMAPINFO));
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = sub_vw.width();
bmi.bmiHeader.biHeight = sub_vw.height();
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 24;
bmi.bmiHeader.biCompression = BI_RGB;
// draw view
::StretchDIBits(
hdc,
0, 0, sub_vw.width(), sub_vw.height(),
0, 0, sub_vw.width(), sub_vw.height(),
boost::gil::interleaved_view_get_raw_data(sub_vw),
&bmi,
DIB_RGB_COLORS,
SRCCOPY
);
::ReleaseDC(mswwin->handle, hdc);
}