/**
* cairo_os2_surface_create_for_window:
* @hwnd_client_window: the window handle to bind the surface to
* @width: the width of the surface
* @height: the height of the surface
*
* Create a Cairo surface which is bound to a given window; the caller retains
* ownership of the window. This is a convenience function for use with
* windows that will only be updated when cairo_os2_surface_refresh_window()
* is called (usually in response to a WM_PAINT message). It avoids the need
* to create a persistent HPS for every window and assumes that one will be
* supplied by the caller when a cairo function needs one. If it isn't, an
* HPS will be created on-the-fly and released before the function which needs
* it returns.
*
* Return value: the newly created surface
*
* Since: 1.10
**/
cairo_surface_t *
cairo_os2_surface_create_for_window (HWND hwnd_client_window,
int width,
int height)
{
cairo_os2_surface_t *local_os2_surface;
/* A window handle must be provided. */
if (!hwnd_client_window) {
return _cairo_surface_create_in_error (
_cairo_error (CAIRO_STATUS_NO_MEMORY));
}
/* Create the surface. */
local_os2_surface = (cairo_os2_surface_t *)
cairo_os2_surface_create (0, width, height);
/* If successful, save the hwnd & turn off automatic repainting. */
if (!local_os2_surface->image_surface->base.status) {
local_os2_surface->hwnd_client_window = hwnd_client_window;
local_os2_surface->blit_as_changes = FALSE;
}
return (cairo_surface_t *)local_os2_surface;
}
void CairoDrawThread(void *pParam)
{
HWND hwndClientWindow = (HWND) pParam;
HPS hpsClientWindow;
SWP swpTemp;
// Query HPS of HWND
hpsClientWindow = WinGetPS(hwndClientWindow);
WinQueryWindowPos(hwndClientWindow, &swpTemp);
// Set FPU state which might have been changed by some Win* calls!
// (Workaround for a PM bug)
DisableFPUException();
// Initialize cairo support
cairo_os2_init();
// Create cairo surface
pCairoSurface = cairo_os2_surface_create(hpsClientWindow,
swpTemp.cx,
swpTemp.cy);
// Tell the surface the HWND too, so if the application decides
// that it wants to draw itself, then it will be able to turn
// on blit_as_changes.
cairo_os2_surface_set_hwnd(pCairoSurface, hwndClientWindow);
// Make sure that the changes will be shown only
// when we tell so
cairo_os2_surface_set_manual_window_refresh(pCairoSurface,
TRUE);
// Create Cairo drawing handle for the surface
pCairoHandle = cairo_create(pCairoSurface);
// Do the main drawing loop as long as needed!
bShutdownDrawing = 0;
CairoDrawLoop(hwndClientWindow,
swpTemp.cx, swpTemp.cy,
pCairoSurface,
pCairoHandle);
// Clean up!
cairo_destroy(pCairoHandle);
cairo_surface_destroy(pCairoSurface);
cairo_os2_fini();
WinReleasePS(hpsClientWindow);
_endthread();
}
gfxOS2Surface::gfxOS2Surface(const gfxIntSize& aSize,
gfxImageFormat aImageFormat)
: mWnd(0), mSize(aSize)
{
#ifdef DEBUG_thebes_2
printf("gfxOS2Surface[%#x]::gfxOS2Surface(Size=%dx%d, %d)\n", (unsigned int)this,
aSize.width, aSize.height, aImageFormat);
#endif
// in this case we don't have a window, so we create a memory presentation
// space to construct the cairo surface on
// create a PS, partly taken from nsOffscreenSurface::Init(), i.e. nsDrawingSurfaceOS2.cpp
DEVOPENSTRUC dop = { 0, 0, 0, 0, 0 };
SIZEL sizel = { 0, 0 }; // use same page size as device
mDC = DevOpenDC(0, OD_MEMORY, (PSZ)"*", 5, (PDEVOPENDATA)&dop, NULLHANDLE);
NS_ASSERTION(mDC != DEV_ERROR, "Could not create memory DC");
mPS = GpiCreatePS(0, mDC, &sizel, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
NS_ASSERTION(mPS != GPI_ERROR, "Could not create PS on memory DC!");
// now create a bitmap of the right size
BITMAPINFOHEADER2 hdr = { 0 };
hdr.cbFix = sizeof(BITMAPINFOHEADER2);
hdr.cx = mSize.width;
hdr.cy = mSize.height;
hdr.cPlanes = 1;
// find bit depth
LONG lBitCount = 0;
DevQueryCaps(mDC, CAPS_COLOR_BITCOUNT, 1, &lBitCount);
hdr.cBitCount = (USHORT)lBitCount;
mBitmap = GpiCreateBitmap(mPS, &hdr, 0, 0, 0);
NS_ASSERTION(mBitmap != GPI_ERROR, "Could not create bitmap in memory!");
// set final stats & select bitmap into PS
GpiSetBitmap(mPS, mBitmap);
// now we can finally create the cairo surface on the in-memory PS
cairo_surface_t *surf = cairo_os2_surface_create(mPS, mSize.width, mSize.height);
#ifdef DEBUG_thebes_2
printf(" type(%#x)=%d (ID=%#x, h/w=%d/%d)\n", (unsigned int)surf,
cairo_surface_get_type(surf), (unsigned int)mPS, mSize.width, mSize.height);
#endif
// Normally, OS/2 cairo surfaces have to be forced to redraw completely
// by calling cairo_surface_mark_dirty(surf), but Mozilla paints them in
// full, so that is not necessary here.
// manual refresh is done from nsWindow::OnPaint
cairo_os2_surface_set_manual_window_refresh(surf, 1);
Init(surf);
}
gfxOS2Surface::gfxOS2Surface(const gfxIntSize& aSize,
gfxASurface::gfxImageFormat aFormat)
: mWnd(0), mDC(0), mPS(0), mSize(aSize), mSurfType(os2Image)
{
if (!CheckSurfaceSize(aSize))
return;
cairo_surface_t *surf =
cairo_os2_surface_create((cairo_format_t)aFormat,
mSize.width, mSize.height);
Init(surf);
RecordMemoryUsed(mSize.width * mSize.height * 4 + OS2_OVERHEAD);
}
gfxOS2Surface::gfxOS2Surface(HDC aDC, const gfxIntSize& aSize)
: mWnd(0), mDC(aDC), mBitmap(nullptr), mSize(aSize)
{
#ifdef DEBUG_thebes_2
printf("gfxOS2Surface[%#x]::gfxOS2Surface(HDC=%#x, Size=%dx%d)\n", (unsigned int)this,
(unsigned int)aDC, aSize.width, aSize.height);
#endif
SIZEL sizel = { 0, 0 }; // use same page size as device
mPS = GpiCreatePS(0, mDC, &sizel, PU_PELS | GPIT_MICRO | GPIA_ASSOC);
NS_ASSERTION(mPS != GPI_ERROR, "Could not create PS on print DC!");
// now create a bitmap of the right size
BITMAPINFOHEADER2 hdr = { 0 };
hdr.cbFix = sizeof(BITMAPINFOHEADER2);
hdr.cx = mSize.width;
hdr.cy = mSize.height;
hdr.cPlanes = 1;
// find bit depth
LONG lBitCount = 0;
DevQueryCaps(mDC, CAPS_COLOR_BITCOUNT, 1, &lBitCount);
hdr.cBitCount = (USHORT)lBitCount;
mBitmap = GpiCreateBitmap(mPS, &hdr, 0, 0, 0);
NS_ASSERTION(mBitmap != GPI_ERROR, "Could not create bitmap for printer!");
// set final stats & select bitmap into PS
GpiSetBitmap(mPS, mBitmap);
// now we can finally create the cairo surface on the in-memory PS
cairo_surface_t *surf = cairo_os2_surface_create(mPS, mSize.width, mSize.height);
#ifdef DEBUG_thebes_2
printf(" type(%#x)=%d (ID=%#x, h/w=%d/%d)\n", (unsigned int)surf,
cairo_surface_get_type(surf), (unsigned int)mPS, mSize.width, mSize.height);
#endif
// Normally, OS/2 cairo surfaces have to be forced to redraw completely
// by calling cairo_surface_mark_dirty(surf), but Mozilla paints them in
// full, so that is not necessary here.
Init(surf);
}
