As in the last commit on gdkdisplay-win32.c, we need to define that to be
0x0600 (Vista) or later so that the items needed in the Windows headers be
activated.
See: https://bugzilla.gnome.org/show_bug.cgi?id=768081#c62
This enables HiDPI support for GTK+ on Windows, so that the
fonts and window look better on HiDPI displays. Notes for the current
work:
-The DPI awareness enabling can be disabled if and only if an application
manifest is not embedded in the app to enable DPI awareness AND a user
compatibility setting is not set to limit DPI awareness for the app, via
the envvar GDK_WIN32_DISABLE_HIDPI. The app manifest/user setting for
DPI awareness will always win against the envvar, and so the HiDPI items
will be always setup in such scenarios, unless DPI awareness is disabled.
-Both automatic detection for the scaling factor and setting the scale
factor using the GDK_SCALE envvar are supported, where the envvar takes
precedence, which will therefore disable automatic scaling when
resolution changes.
-We now default to a per-system DPI awareness model, which means that we
do not handle WM_DPICHANGED, unless one sets the
GDK_WIN32_PER_MONITOR_HIDPI envvar, where notes for it are in the
following point.
-Automatic scaling during WM_DISPLAYCHANGE is handled (DPI setting change of
current monitor) is now supported. WM_DPICHANGED is handled as well,
except that the window positioning during the change of scaling still
needs to be refined, a change in GDK itself may be required for this.
-I am unable to test the wintab items because I don't have such devices
around.
https://bugzilla.gnome.org/show_bug.cgi?id=768081
Switch code to use gdk_display_is_composited() instead.
The new code also doesn't use a vfunc to query the property but rather
requires the backend to call set_composited()/set_rgba() to change the
value.
... and gdk_screen_get_window_stack().
Those functions were originally added in
5afb4f0f11 but do not seem to be used as
they are not implemented anywhere but in X.
As GDK is not meant to fulfill window management functionality I'm going
to remove these functions without replacements.
... and gdk_screen_get_width_mm() and gdk_screen_get_height_mm() and
the shortcut counterparts that call these functions on the default
screen.
Modern display servers don't provide an ability to query the size of a
screen or display so we shouldn't allow that either.
Except for the init function, all the visual related code is made
of gdkscreen vfuncs, so let's move it to gdkscreen-win32. This way
we avoid keeping other static variables and instead store the info
inside the screen struct.
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
Support environment variable GDK_WIN32_FONT_RESOLUTION that can be set to
a desired dpi (72, 96, 130, etc) to override system settings. Useful for
debugging, since changing system font scaling requires the user to log off
and log on again.
https://bugzilla.gnome.org/show_bug.cgi?id=734038
Move g_return_if_fail() stuff from the backends to the public
functions in gdkscreen.c itself, and some fixes for ugly formatting in
the various gdkscreen-backend.c files.
The function returns the part of a monitors area that should be
used for positioning popups, menus, etc. The only non-trivial
implementation atm is in the X backend, all the other backends
just return the full monitor area. The X implementation is
currently suboptimal, since it requires roundtrips to collect
the necessary information. It should be changed to monitor
the properties for changes, when XFixes allows to monitor
individual properties.
https://bugzilla.gnome.org/show_bug.cgi?id=641999
- 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."
In particular, the following functions are gone:
- gdk_screen_get_default_colormap()
- gdk_screen_set_default_colormap()
- gdk_screen_get_system_colormap()
- gdk_screen_get_rgba_colormap()
Tue Apr 25 10:25:28 2006 Søren Sandmann <sandmann@redhat.com>
* tests/testgtk.c (create_alpha_window): Create 'composited' label.
* tests/testgtk.c (on_composited_changed): New function, change
the label to say whether the screen is composited or not.
* gtk/gtkwindow.c (gtk_window_on_composited_changed): When
composited status change, invalidate the window and propagate the signal;.
* gtk/gtkwindow.c (gtk_window_map): Set the appropriate type hint
if reset_type_hint is TRUE.
* gtk/gtkwindow.c (gtk_window_set_type_hint): If hint is one of
the old hints, store a shadow copy in the public window->type_hint
bitfield, otherwise set this field to normal. Set the private
field to the type hint.
* gtk/gtkwindow.c (gtk_window_init): Initialize priv->type_hint.
* gtk/gtkwindow.c (struct _GtkWindowPrivate): New field
"reset_type_hint" indicating whether the type hint needs to be
reset. New field type_hint containing a GdkWindowTypeHint.
* gtk/gtkwidget.c (propagate_composited_changed): New function to
propagate changes in composited status.
(gtk_widget_class_init): Add composited_changed signal.
* gtk/gtkwidget.h (struct _GtkWidgetClass): New signal composited-changed.
* gtk/gtkwidget.c (gtk_widget_is_composited): New function.
* gtk/gtktooltips.c (gtk_tooltips_draw_tips): Set transient for.
* gtk/gtktooltips.c (gtk_tooltips_force_window): Set the type hint
* gtk/gtkmenuitem.c (gtk_menu_item_position_menu): Compute whether
the item belongs to a menubar. Set the type_hint appropriately
depending on the outcome.
* gtk/gtkmenu.c (gtk_menu_position): Set the default type hint here.
* gtk/gtkmenu.c (gtk_menu_attach_to_widget): connect to hierarchy
changed on the attach widget.
* gtk/gtkmenu.c (attach_widget_hierarchy_changed): New function to
set the transient_for property for menus.
* gtk/gtkdnd.c (set_icon_stock_pixbuf): Set the appropriate type hint.
* gtk/gtkcombo.c (gtk_combo_popup_list): Make the popup window
transient for the toplevel.
* gtk/gtkcombobox.c (gtk_combo_box_set_popup_widget): Set
transient-for, for the popup window.
* gdk/x11/gdkwindow-x11.c (gdk_window_get_type_hint): Support for
new window types.
* gdk/x11/gdkwindow-x11.c (gdk_window_set_type_hint): Add support
for new window types.
* gdk/x11/gdkscreen-x11.c (_gdk_x11_screen_process_owner_change):
New function called whenever the compositing manager comes and goes.
* gdk/x11/gdkscreen-x11.c (gdk_screen_is_composited): New function.
* gdk/x11/gdkscreen-x11.c
(_gdk_x11_screen_request_cm_notification, make_cm_atom,
check_is_composited): New functions
* gdk/x11/gdkevents-x11.c (gdk_event_translate): Call
_gdk_x11_screen_process_owner_change when an
XFixesSelectionNotifyEvent is received.
* gdk/x11/gdkdisplay-x11.c (gdk_display_open): Call
_gdk_x11_screen_request_cm_notification() on all screens.
* gdk/quartz/gdkscreen-quartz.c (gdk_screen_is_composited): Dummy
implementation.
* gdk/gdkscreen.c (gdk_screen_class_init): New signal,
'composited-changed'.
* gdk/gdkwindow.h: Add new EWMH window types.
* gdk/win32/gdkscreen-win32.c (gdk_screen_is_composited)
2005-11-02 Tor Lillqvist <tml@novell.com>
* gdk/win32/gdkcolor-win32.c
* gdk/win32/gdkscreen-win32.c
* gdk/win32/gdkwindow-win32.c: Whitespace consistency
fixes. Remove superfluous test for GdkWindow* parameters being
non-NULL. Testing GDK_IS_WINDOW() is enough. As there is only one
GdkScreen and one GdkDisplay in the Win32 backend, use those
variables instead of the getter functions. For GdkDisplay* and
GdkScreen* parameters, check that they are equal to the
corresponding singleton variables instead of the more general
GDK_IS_DISPLAY() or GDK_IS_SCREEN().
2005-09-09 Tor Lillqvist <tml@novell.com>
* gdk/win32/gdkdisplay-win32.c (gdk_display_get_name): Cache the
display name. There is only one GdkDisplay on Win32, and
constructing the display name isn't entirely trivial, so cacheing
is probably worth it. For instance GIMP calls this function a lot.
(gdk_display_open): Call gdk_display_get_name() to prime the
cached name.
(gdk_display_get_n_screens, gdk_display_get_screen,
gdk_display_get_default_screen): Verify parameter correctness like
the X11 backend does.
* gdk/win32/gdkscreen-win32.c (gdk_screen_make_display_name):
Return a freshly allocated string, as the API specifies. Fixes a
heap corruption problem that caused random errors and crashes in
GIMP, for instance.
2005-06-05 Tor Lillqvist <tml@novell.com>
* gdk/win32/gdkscreen-win32.c
(_gdk_windowing_substitute_screen_number): Return NULL unless
screen number is zero. We have only one screen on Win32.
(gdk_screen_make_display_name): Call gdk_display_get_name() and
return that.
2005-05-09 Owen Taylor <otaylor@redhat.com>
* gdk/gdkrgb.c (gdk_rgb_convert_0888_br, gdk_rgb_convert_8880_br):
Fill in unused bits so they can be used for the depth-32 target case.
Rewrite so that that gives a marginal speedup rather than a
marginal slowdown. (on x86)
* gdk/gdkscreen.h gdk/x11/gdkscreen-x11.[ch] gdk/x11/gdkvisual-x11.c:
Add gdk_screen_get_rgba_colormap/visual to get a visual for
windows with an alpha channel, if one exists.
* gdk/win32/gdkscreen-win32.c gdk/linux-fb/gdkscreen-fb.c:
Stub out gdk_screen_get_rgba_colormap/visual.
* gdk/x11/gdkcolor-x11.c (gdk_colormap_alloc_colors): computation of
"unused" wasn't right for depth == 32, since it depended on
shifting by 32.
* gdk/gdkrgb.c: Fill in alpha bits with 1s. (Based on patch from
Keith Packard,
http://mail.gnome.org/archives/gtk-devel-list/2004-June/msg00080.html)
* gdk/x11/gdkdrawable-x11.c (gdk_x11_drawable_get_picture):
Implement again, without using Xft.
* tests/testgtk.c: Add a test for windows with an alpha channel.
