static cairo_surface_t *
_cairo_win32_display_surface_create_similar (void *abstract_src,
cairo_content_t content,
int width,
int height)
{
cairo_win32_display_surface_t *src = abstract_src;
cairo_format_t format = _cairo_format_from_content (content);
cairo_surface_t *new_surf = NULL;
/* We force a DIB always if:
* - we need alpha; or
* - the parent is a DIB; or
* - the parent is for printing (because we don't care about the
* bit depth at that point)
*
* We also might end up with a DIB even if a DDB is requested if
* DDB creation failed due to out of memory.
*/
if (!(src->is_dib || content & CAIRO_CONTENT_ALPHA)) {
/* try to create a ddb */
new_surf = cairo_win32_surface_create_with_ddb (src->win32.dc, CAIRO_FORMAT_RGB24, width, height);
if (new_surf->status)
new_surf = NULL;
}
if (new_surf == NULL) {
new_surf = _cairo_win32_display_surface_create_for_dc (src->win32.dc, format, width, height);
}
return new_surf;
}
gfxWindowsSurface::gfxWindowsSurface(HDC dc, const mozilla::gfx::IntSize& realSize, gfxImageFormat imageFormat) :
mOwnsDC(false), mForPrinting(false), mWnd(nullptr)
{
mozilla::gfx::IntSize size(realSize);
if (!CheckSurfaceSize(size))
MakeInvalid(size);
cairo_format_t cformat = gfxImageFormatToCairoFormat(imageFormat);
cairo_surface_t *surf =
cairo_win32_surface_create_with_ddb(dc, cformat,
size.width, size.height);
Init(surf);
if (mSurfaceValid) {
// DDBs will generally only use 3 bytes per pixel when RGB24
int bytesPerPixel = ((imageFormat == gfxImageFormat::RGB24) ? 3 : 4);
RecordMemoryUsed(size.width * size.height * bytesPerPixel + sizeof(gfxWindowsSurface));
}
if (CairoStatus() == 0)
mDC = cairo_win32_surface_get_dc(CairoSurface());
else
mDC = nullptr;
}
gfxWindowsSurface::gfxWindowsSurface(HDC dc, const gfxIntSize& size, gfxImageFormat imageFormat) :
mOwnsDC(PR_FALSE), mForPrinting(PR_FALSE), mWnd(nsnull)
{
if (!CheckSurfaceSize(size))
return;
cairo_surface_t *surf = cairo_win32_surface_create_with_ddb(dc, (cairo_format_t)imageFormat,
size.width, size.height);
Init(surf);
if (CairoStatus() == 0)
mDC = cairo_win32_surface_get_dc(CairoSurface());
else
mDC = nsnull;
}
gfxWindowsSurface::gfxWindowsSurface(HDC dc, const gfxIntSize& size, gfxImageFormat imageFormat) :
mOwnsDC(PR_FALSE), mForPrinting(PR_FALSE), mWnd(nsnull)
{
if (!CheckSurfaceSize(size))
return;
cairo_surface_t *surf = cairo_win32_surface_create_with_ddb(dc, (cairo_format_t)imageFormat,
size.width, size.height);
Init(surf);
// DDBs will generally only use 3 bytes per pixel when RGB24
int bytesPerPixel = ((imageFormat == gfxASurface::ImageFormatRGB24) ? 3 : 4);
RecordMemoryUsed(size.width * size.height * bytesPerPixel + sizeof(gfxWindowsSurface));
if (CairoStatus() == 0)
mDC = cairo_win32_surface_get_dc(CairoSurface());
else
mDC = nsnull;
}
static VALUE
cr_win32_surface_initialize (int argc, VALUE *argv, VALUE self)
{
cairo_surface_t *surface = NULL;
VALUE arg1, arg2, arg3, arg4;
VALUE hdc, format, width, height;
rb_scan_args (argc, argv, "13", &arg1, &arg2, &arg3, &arg4);
switch (argc)
{
case 1:
hdc = arg1;
surface = cairo_win32_surface_create (NUM2PTR (hdc));
break;
case 2:
width = arg1;
height = arg2;
surface = cairo_win32_surface_create_with_dib (CAIRO_FORMAT_ARGB32,
NUM2INT (width),
NUM2INT (height));
break;
case 3:
if (NIL_P (arg1) ||
(rb_cairo__is_kind_of (arg1, rb_cNumeric) &&
NUM2INT (arg1) != CAIRO_FORMAT_RGB24))
{
# if CAIRO_CHECK_VERSION(1, 4, 0)
HDC win32_hdc;
hdc = arg1;
width = arg2;
height = arg3;
win32_hdc = NIL_P (hdc) ? NULL : NUM2PTR (hdc);
surface = cairo_win32_surface_create_with_ddb (win32_hdc,
CAIRO_FORMAT_RGB24,
NUM2INT (width),
NUM2INT (height));
# else
rb_raise (rb_eArgError,
"Cairo::Win32Surface.new(hdc, width, height) "
"is available since cairo >= 1.4.0");
# endif
}
else
{
format = arg1;
width = arg2;
height = arg3;
surface = cairo_win32_surface_create_with_dib (RVAL2CRFORMAT (format),
NUM2INT (width),
NUM2INT (height));
}
break;
case 4:
{
# if CAIRO_CHECK_VERSION(1, 4, 0)
HDC win32_hdc;
hdc = arg1;
format = arg2;
width = arg3;
height = arg4;
win32_hdc = NIL_P (hdc) ? NULL : (HDC) NUM2UINT (hdc);
surface = cairo_win32_surface_create_with_ddb (win32_hdc,
RVAL2CRFORMAT (format),
NUM2INT (width),
NUM2INT (height));
# else
rb_raise (rb_eArgError,
"Cairo::Win32Surface.new(hdc, format, width, height) "
"is available since cairo >= 1.4.0");
# endif
}
break;
}
if (!surface)
rb_cairo_check_status (CAIRO_STATUS_INVALID_FORMAT);
cr_surface_check_status (surface);
DATA_PTR (self) = surface;
if (rb_block_given_p ())
yield_and_finish (self);
return Qnil;
}
