Requires Vista and newer.
* Create surfaces with cairo_win32_surface_create_with_format
* Provide an rgba visual that can be distinguished from the system visual
* Make rgba visual the best available visual
* Enable alpha-transparency for all windows that we control
* Check for appropriate cairo capabilities at configure time
(W32 - 1.14.3 newer than 2015-04-14; others - 1.14.0)
* Check for composition support before enabling CSDs
* Re-enable transparency on WM_DWMCOMPOSITIONCHANGED
Windows that were created while composition was enabled and that were CSDed
as a result and will look ugly (thick black borders or no borders at all) once
composition is disabled.
If composition is enabled afterwards, they will return back to normal.
This happens, for example, when RDP session is opened to a desktop where a GTK
application is running. For W7/Vista windows will only re-gain transparency after
the RDP session is closed. For W8 transparency will only be gone momentarily.
Windows that were created while composition was disabled will not be CSDed
automatically and will use SSD (WM decorations), while windows that are CSDed
manually will get a thin square border.
If composition is enabled afterwards, these windows will not change.
This is most noticeable for system menus (popup menus are often generated
on the fly, system menus are created once) and some dialogues (About dialogue,
for example).
https://bugzilla.gnome.org/show_bug.cgi?id=727316
The current GdkScreen->is_composited() is a stub as we were having Windows
XP being supported, which does not support Desktop Window Manager (DWM),
which is used by Windows for composition.
Windows Vista and later support DWM, and it is always enabled on Windows 8/
Server 2012 and later.
Please note that as we are dropping XP support in this cycle, this is the
commit that would say goodbye to Windows XP support for GTK+-3.x, by
linking directly to dwmapi.dll. This means, we only check whether we are
on Windows 8 or Server 2012 (or later) to see whether we unconditionally
have composition enabled.
https://bugzilla.gnome.org/show_bug.cgi?id=741849
Due to the work on gdk_cursor_new_from_surface (commit b2113b73),
get_cursor_for_pixbuf() in GdkDisplayClass was converted to
get_cursor_for_surface(), which means the GDK Win32 backend needs to be
updated for the code to build and run on Windows, plus some function
prototypes and declarations/calls need to be updated as well.
https://bugzilla.gnome.org/show_bug.cgi?id=705980
gdk_flush() should gdk_display_sync() on all open displays.
Both for display_flush and display_sync it seems useful to call
GdiFlush, but we don't have anything extra to do for display_sync,
as there is no inherent roundtrip on win32.
This should close bug #84314
There are some cases where we don't get a WINDOWPOSCHANGE such that
we generate a configure event, even if we called gdk_window_move_resize()
or similar. For instance:
* The window is fullscreen
* The window is maximized
* The specified pos/size is the same as the current one
However, as per X11 ConfigureNotify semantics we *always* want one, or
we could run into issue like e.g. bug #537296 where we're waiting for
the CONFIGURE to call gdk_window_thaw_toplevel_updates_libgtk_only().
- replace GdkNativeWindow with HWND, remove type casts
- no more GdkDisplayClass::get_drag_protocol but GdkWindowImpl::get_drag_protocol
- remove *_client_message*()
There are sure regressions but basic stuff seems to be working
again after all the API breakage done with comments like
"Win32 and Quartz need to be ported still."
Intermediate commit of work in progress on integrating the old code
for OLE2-based generic drag and drop from Arhaeopteryx Software, from
a long time ago in the GTK+ 1.3 timeframe. Does still not work and is
as before not compiled in unless OLE2_DND is defined in
gdkdnd-win32.c. (Thus, for inter-process DND, still only WM_DROPFILES
style dropping of files on GTK+ apps works.)
Related slight refactoring of other code that shouldn't change how it
works. Add more global variables for run-time constants (once
initialized) representing well-known GdkAtoms and registered Windows
clipboard formats, as they with the generic DND code will be needed in
several source files. Some improved debugging output.
2009-03-11 Tor Lillqvist <tml@iki.fi>
Bug 573067 - Intra-app dnd of text behavior on Windows is wrong
* gdk/win32/gdkdnd-win32.c (local_send_motion) (gdk_drag_motion):
The default action should be move, not copy. Tweak how the
GdkDragAction fields in GdkDragContexts are changed. Seems to help
the problem.
Add more debugging printout for --gdk-debug=dnd to many functions.
* gdk/win32/gdkmain-win32.c
* gdk/win32/gdkprivate-win32.h: (_gdk_win32_drag_protocol_to_string)
(_gdk_win32_drag_action_to_string): New functions for use in
debugging printouts.
svn path=/trunk/; revision=22522
2009-01-29 Tor Lillqvist <tml@novell.com>
Bug 559408 - Transparency lost when images are copied between GTK+
and the clipboard on Windows
The code in gdkselection-win32.c is simplified quite a lot. When
an image is stored on the clipboard from GTK+, only the "PNG" and
CF_DIB formats are advertised. PNG is our preferred format because
it can losslessly represent any image that gdk-pixbuf can handle,
even with alpha, unambiguously. CF_DIB is also advertised because
of its ubiquitous support in Windows software.
Delayed rendering is used as before, so for other data than text
nothing is actually stored on the clipboard until some app asks
for it.
It's pointless to advertise images formats like "image/png" or
"image/x-MS-bmp" that no other Windows application is going to
look for anyway. Likewise it's pointless to store text under
formats like "text/plain" or "UTF8_STRING". Just store
CF_UNICODETEXT. CF_TEXT will be available as a synthesized format
anyways.
Office 2007 offers and asks for images in PNG format using the
registered clipboard format name "PNG", so we do likewise. If the
"PNG" format is available that is preferred when copying to GTK+
from the clipboard.
Unfortunately Word 2007 still uses CF_DIB without handling
alpha. But PowerPoint 2007 uses PNG if available and handles alpha
correctly. Both Word and Powerpoint offer PNG with alpha nicely.
Firefox and IE7 offer images that contain alpha as 32-bit version
3 BI_RGB DIBs with the undocumented "extra" bytes actually being
alpha. Also, alpha is premultiplied into the RGB bytes, presumably
because that is how AlphaBlend() wants such DIBs. That is also
taken care of. At least for Firefox it easy to be sure that a
CF_DIB on the clipboard is from Firefox.
Also some general stylistic cleanup, comment improvements, and
improvements of debugging printout especially in the clipboard
handling. Those are not detailled below.
* gdk/win32/gdkprivate-win32.h
* gdk/win32/gdkglobals-win32.c
* gdk/win32/gdkgmain-win32.c: Move some globals that were used
only in gdkselection-win32.c to be local to that file.
* gdk/win32/gdkproperty-win32.c (gdk_property_change): Don't
bother checking if text to be placed on the clipboard consists of
only ASCII.
* gdk/win32/gdkselection-win32.c: Add static variables for a list
of GdkPixbuf-supported formats, well-known registered clipboard
formats for images, and for GdkAtoms for well-known image and text
formats.
(_gdk_win32_selection_init): Initialize above static variables.
(selection_property_store) (gdk_selection_property_get)
(_gdk_selection_property_delete): Don't use a FIFO of GdkSelProps
for a window after all, it breaks testtext. See bug #163844.
(gdk_selection_convert): When converting to the TARGETS format,
i.e. when the caller wants to know what clipboard formats are
available, if PNG is available we report just that and skip
CF_DIB, JPEG and GIF even if advertised.
If CF_UNICODETEXT is available, report only UTF8_STRING.
When converting to the UTF8_STRING format, i.e. when the caller
wants text from the clipboard, try just CF_UNICODETEXT. There is
no point in trying CF_TEXT as Windows will synthesize
CF_UNICODETEXT from CF_TEXT anyway, if some app has stored just
CF_TEXT.
When converting to the image/bmp format, i.e. when the caller
wants an CF_DIB image from the clipboard, we check if the DIB is a
version 3 32-bit BI_RGB one that is likely to actually contain
alpha in the "extra" bytes. Such a DIB is likely to have
premultiplied alpha even, at least in the case of Firefox 3 and
IE7. We then edit the DIB in-place into a version 5 one in
BI_BITFIELDS format and undo the alpha premultiplication.
In any case, prepend a BMP file header before letting go of the
data which will be fed to the gdk-pixbuf bmp loader by upper
levels.
(gdk_win32_selection_add_targets): If some kind of pixmap image
format is being added, actually advertise just PNG and
CF_DIB. Note that alpha won't be stored on the clipboard through
CF_DIB. This is because gdk-pixbuf's bmp loader doesn't save
alpha. Furthermore, few if any non-GTK+ Windows apps seem to
understand a version 5 DIB with proper alpha anyway.
(_gdk_win32_selection_convert_to_dib): Simplified muchly.
svn path=/trunk/; revision=22255
2008-10-04 Tor Lillqvist <tml@novell.com>
Bug 132501 - Make utility window translate to tool window in win32
Implement the utility window type hint. Such windows are kept on
top of other windows. Makes GIMP's toolbox and dock windows behave
more like in GNOME under metacity. Apply the same logic also to
windows marked with the dialog window type hint, and windows that
are transient for some other window. I'll call such windows
"transient-type" below.
* gdk/win32/gdkevents-win32.c (doesnt_want_key): Drop unused
variables.
(ensure_stacking_on_unminimize)
(ensure_stacking_on_window_pos_changing)
(ensure_stacking_on_activate_app): New functions to implement the
desired stacking order. Make sure that a window that is not
transient-type stays below any transient-type windows of the
application. When activating a non-transient-type window make sure
it rises as high as possible.
(gdk_event_translate): Call above functions on
WM_WINDOWPOSCHANGING, WM_ACTIVATEAPP and on WM_SIZE when
unminimizing. Improve debugging printout.
* gdk/win32/gdkwindow-win32.c (get_effective_window_decorations):
Handle utility windows like toolbar windows.
(gdk_window_new_internal) (update_style_bits): Give utility
windows the WS_EX_TOOLWINDOW extended style.
(gdk_window_set_title): If debugging "misc" or "events", make the
handle of top-level windows show up in their title bars. Very
useful when looking at debugging output.
(gdk_window_set_keep_above) (gdk_window_set_keep_below)
(gdk_window_set_modal_hint) (gdk_window_set_skip_taskbar_hint)
(gdk_window_set_skip_pager_hint): Add and improve debugging
printout.
(gdk_window_set_type_hint): Print hint symbolically in GDK_NOTE().
2008-10-04 Tor Lillqvist <tml@novell.com>
* gdk/win32/gdkmain-win32.c (_gdk_win32_window_exstyle_to_string)
(_gdk_win32_window_pos_bits_to_string): New debugging printout
functions. Decode the WS_EX_* and SWP_* bits.
* gdk/win32/gdkprivate-win32.h: Declare them. Define
GDK_DEBUG_MISC_OR_EVENTS for use in GDK_NOTE() to match either
"misc" or "events".
svn path=/trunk/; revision=21587
2008-07-02 Cody Russell <bratsche@gnome.org>
Bug 541162 – [Win32] Update for the new GdkWindowImpl stuff
* gdk/win32/gdkprivate-win32.h:
* gdk/win32/gdkgeometry-win32.c:
* gdk/win32/gdkevents-win32.c:
* gdk/win32/gdkwindow-win32.c: Update Win32 backend according to
the newly refactored GdkWindow code.
svn path=/trunk/; revision=20729
2008-03-10 Tor Lillqvist <tml@novell.com>
Bug 520286 - Non-deletable window has no minimize / maximize buttons
* gdk/win32/gdkmain-win32.c (_gdk_win32_window_style_to_string):
New debugging output function that decodes a set of WS_* bits.
* gdk/win32/gdkprivate-win32.h: Declare it.
* gdk/win32/gdkwindow-win32.c (update_single_system_menu_entry):
New function that enables or disables one menu entry in the system
menu of a top-level window. (The corresponding decoration will
then also be enabled or disabled (grayed).)
(update_style_bits): Do as the comment says and don't try to
update the window style based on the GdkWMFunctions set for the
window.
(update_system_menu): New function that enables or disables the
system menu entries based on a window's stored set of
GdkWMFunctions.
(gdk_window_set_functions): Call update_system_menu() instead of
update_style_bits().
svn path=/trunk/; revision=19743
