From: Takashi Hiromatsu <matsuan@ca2.so-net.ne.jp>
Cc: Juanma Barranquero <lekktu@gmail.com>,
macemacs-dev <macemacsjp-dev@lists.sourceforge.jp>
Subject: Re: [Mac OS X] [Win32] Frame-transparency patch
Date: Tue, 21 Jun 2005 20:18:19 +0900 [thread overview]
Message-ID: <m2zmtkgdqc.wl%matsuan@ca2.so-net.ne.jp> (raw)
In-Reply-To: <f7ccd24b0506201458730b8137@mail.gmail.com>
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Thank you for your kindly advices.
At Mon, 20 Jun 2005 23:58:35 +0200,
Juanma Barranquero wrote:
> I'm using Visual Studio .NET 2003 and I'm getting "undefined
> identifier" errors for LWA_ALPHA and WS_EX_LAYERED. They are on
> WinUser.h, of course; I suppose it's a _WIN32_WINNT >= 0x0500 thing.
> Perhaps the easiest fix is just define the constants yourself.
I've done.
> - In frame.el you should use
....
> (when (or (eq system-type 'windows-nt) (eq system-type 'darwin))
>
> because it's nicer and easier to extend if someday other platforms
> support transparent backgrounds.
Done.
> - Functions `set-active-alpha' and `set-inactive-alpha' do have an
> argument ALPHA-VALUE, referred to in the docstring as ALPHA. Change
> the name of the argument or fix the docstring, please.
Done.
> - Also, capitalize the interactive messages "active alpha: " and
> "inactive alpha: " to "Active alpha: " and "Inactive alpha: " (it's
> customary on interactive prompt).
Doen.
>> - Better still would be to document what the ALPHA-VALUE is and what
>> is its range (0.0 to 1.0, I assume, but it is not said anywhere).
...
> wraparound. It'd be better to restrict the values entered to the
> correct range.
Both done.
Could you check new patch.
Kind regards.
T. Hiromatsu
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--- lisp/frame.el.orig 2005-06-21 10:25:27.358750000 +0900
+++ lisp/frame.el 2005-06-21 12:17:59.468250000 +0900
@@ -927,6 +927,24 @@
(modify-frame-parameters (selected-frame)
(list (cons 'border-color color-name))))
+(when (memq system-type '(windows-nt darwin))
+ (defun set-active-alpha (alpha)
+ "Set the opacity of the selected frame in active state to ALPHA.
+ALPHA can take value between 0.0 (invisible) to 1.0 (completely opaque).
+When called interactively, prompt for the value of the opacity to set.
+To get the frame's current active alpha value state, use `frame-parameters'."
+ (interactive "nActive alpha (0.0 - 1.0): ")
+ (modify-frame-parameters (selected-frame)
+ (list (cons 'active-alpha alpha))))
+ (defun set-inactive-alpha (alpha)
+ "Set the opacity of the selected frame in inactive state to ALPHA.
+ALPHA can take value between 0.0 (invisible) to 1.0 (completely opaque).
+When called interactively, prompt for the value of the opacity to set.
+To get the frame's current inactive alpha value state, use `frame-parameters'."
+ (interactive "nInactive alpha (0.0 - 1.0): ")
+ (modify-frame-parameters (selected-frame)
+ (list (cons 'inactive-alpha alpha)))))
+
(defun auto-raise-mode (arg)
"Toggle whether or not the selected frame should auto-raise.
With arg, turn auto-raise mode on if and only if arg is positive.
--- src/frame.c.orig 2005-06-21 10:25:27.671250000 +0900
+++ src/frame.c 2005-06-21 10:26:44.015000000 +0900
@@ -106,6 +106,10 @@
Lisp_Object Qleft_fringe, Qright_fringe;
Lisp_Object Qbuffer_predicate, Qbuffer_list;
Lisp_Object Qtty_color_mode;
+#if defined (HAVE_CARBON) || defined (WINDOWSNT)
+Lisp_Object Qactive_alpha;
+Lisp_Object Qinactive_alpha;
+#endif
Lisp_Object Qfullscreen, Qfullwidth, Qfullheight, Qfullboth;
@@ -2575,6 +2579,10 @@
{"right-fringe", &Qright_fringe},
{"wait-for-wm", &Qwait_for_wm},
{"fullscreen", &Qfullscreen},
+#if defined (HAVE_CARBON) || defined (WINDOWSNT)
+ {"active-alpha", &Qactive_alpha},
+ {"inactive-alpha", &Qinactive_alpha},
+#endif
};
#ifdef HAVE_WINDOW_SYSTEM
--- src/frame.h.orig 2005-06-21 10:25:27.827500000 +0900
+++ src/frame.h 2005-06-21 10:26:44.155625000 +0900
@@ -451,6 +451,11 @@
/* Additional space to put between text lines on this frame. */
int extra_line_spacing;
+#if defined (HAVE_CARBON) || defined (WINDOWSNT)
+ /* Opacity of the Frame, which should be a number between 0.0 and 1.0 */
+ float active_alpha, inactive_alpha;
+#endif
+
/* Set to non-zero in change_frame_size when size of frame changed
Clear the frame in clear_garbaged_frames if set. */
unsigned resized_p : 1;
@@ -1003,6 +1008,10 @@
extern Lisp_Object Qline_spacing;
extern Lisp_Object Qwait_for_wm;
extern Lisp_Object Qfullscreen;
+#if defined (HAVE_CARBON) || defined (WINDOWSNT)
+extern Lisp_Object Qactive_alpha;
+extern Lisp_Object Qinactive_alpha;
+#endif
extern Lisp_Object Qleft_fringe, Qright_fringe;
extern Lisp_Object Qheight, Qwidth;
@@ -1074,6 +1083,11 @@
Lisp_Object));
extern void x_set_scroll_bar_width P_ ((struct frame *, Lisp_Object,
Lisp_Object));
+#if defined (HAVE_CARBON) || defined (WINDOWSNT)
+extern void x_set_active_alpha P_ ((struct frame *, Lisp_Object, Lisp_Object));
+extern void x_set_inactive_alpha P_ ((struct frame *, Lisp_Object, Lisp_Object));
+extern void x_set_frame_alpha P_ ((struct frame *, int));
+#endif
extern Lisp_Object x_icon_type P_ ((struct frame *));
--- src/macfns.c.orig 2005-06-21 10:25:28.186875000 +0900
+++ src/macfns.c 2005-06-21 11:20:22.561875000 +0900
@@ -2026,6 +2026,65 @@
#endif /* not MAC_OSX */
}
+/* Change the opecity of frame F to ALPHA.
+ ALPHA must be a number between 0.0 and 1.0
+
+ The frame will become completely invisible If ALPHA is 0.0,
+ while the value of 1.0 makes it completely opaque. */
+
+void
+x_set_active_alpha (f, alpha, old_alpha)
+ struct frame *f;
+ Lisp_Object alpha, old_alpha;
+{
+ /* Don't change the alpha if it's already ALPHA. */
+ if (EQ (alpha, f->active_alpha))
+ return;
+
+ if (NILP (alpha))
+ return;
+
+ if (FLOATP (alpha))
+ {
+ if ((XFLOAT_DATA (alpha) >= 0.0) && (XFLOAT_DATA (alpha) <= 1.0))
+ {
+ f->active_alpha = XFLOAT_DATA (alpha);
+
+#if TARGET_API_MAC_CARBON
+ BLOCK_INPUT;
+
+ x_set_frame_alpha (f, 1);
+
+ UNBLOCK_INPUT;
+#endif
+ }
+ }
+
+ return;
+}
+
+void
+x_set_inactive_alpha (f, alpha, old_alpha)
+ struct frame *f;
+ Lisp_Object alpha, old_alpha;
+{
+ /* Don't change the alpha if it's already ALPHA. */
+ if (EQ (alpha, f->inactive_alpha))
+ return;
+
+ if (NILP (alpha))
+ return;
+
+ if (FLOATP (alpha))
+ {
+ if ((XFLOAT_DATA (alpha) >= 0.0) && (XFLOAT_DATA (alpha) <= 1.0))
+ {
+ f->inactive_alpha = XFLOAT_DATA (alpha);
+ }
+ }
+
+ return;
+}
\f
/* Subroutines of creating a frame. */
@@ -2736,6 +2795,10 @@
x_default_parameter (f, parms, Qscroll_bar_width, Qnil,
"scrollBarWidth", "ScrollBarWidth",
RES_TYPE_NUMBER);
+ x_default_parameter (f, parms, Qactive_alpha, make_float(1.0),
+ "activeAlpha", "ActiveAlpha", RES_TYPE_FLOAT);
+ x_default_parameter (f, parms, Qinactive_alpha, make_float(1.0),
+ "inactiveAlpha", "InactiveAlpha", RES_TYPE_FLOAT);
/* Dimensions, especially FRAME_LINES (f), must be done via change_frame_size.
Change will not be effected unless different from the current
@@ -4445,6 +4508,8 @@
x_set_fringe_width,
0, /* x_set_wait_for_wm, */
x_set_fullscreen,
+ x_set_active_alpha,
+ x_set_inactive_alpha,
};
void
--- src/macterm.c.orig 2005-06-21 10:25:28.765000000 +0900
+++ src/macterm.c 2005-06-21 10:26:44.483750000 +0900
@@ -1771,6 +1771,23 @@
return FONT_TYPE_UNKNOWN;
}
+void
+x_set_frame_alpha (f, activate_p)
+ struct frame *f;
+ int activate_p;
+{
+ SInt32 response;
+ OSErr err;
+
+ BLOCK_INPUT;
+ err = Gestalt (gestaltSystemVersion, &response);
+ UNBLOCK_INPUT;
+
+ if ((err == noErr) && (response >= 0x1020)) {
+ SetWindowAlpha (f->output_data.mac->mWP,
+ activate_p? f->active_alpha: f->inactive_alpha);
+ }
+}
\f
/***********************************************************************
@@ -3493,6 +3510,7 @@
ActivateControl (root_control);
UNBLOCK_INPUT;
x_update_cursor (f, 1);
+ x_set_frame_alpha (f, 1);
}
static void
@@ -3508,6 +3526,7 @@
DeactivateControl (root_control);
UNBLOCK_INPUT;
x_update_cursor (f, 1);
+ x_set_frame_alpha (f, 0);
}
/* The focus has changed. Update the frames as necessary to reflect
--- src/w32fns.c.orig 2005-06-21 10:25:29.218125000 +0900
+++ src/w32fns.c 2005-06-21 11:18:16.202500000 +0900
@@ -262,6 +262,7 @@
TrackMouseEvent_Proc track_mouse_event_fn = NULL;
ClipboardSequence_Proc clipboard_sequence_fn = NULL;
extern AppendMenuW_Proc unicode_append_menu;
+extern SetLayeredWindowAttributes_Proc set_layered_window_attributes_fn;
/* W95 mousewheel handler */
unsigned int msh_mousewheel = 0;
@@ -1978,6 +1979,63 @@
wid - 1) / wid;
}
+/* Change the opecity of frame F to ALPHA.
+ ALPHA must be a number between 0.0 and 1.0
+
+ The frame will become completely invisible If ALPHA is 0.0,
+ while the value of 1.0 makes it completely opaque. */
+
+void
+x_set_active_alpha (f, alpha, old_alpha)
+ struct frame *f;
+ Lisp_Object alpha, old_alpha;
+{
+ /* Don't change the alpha if it's already ALPHA. */
+ if (EQ (alpha, f->active_alpha))
+ return;
+
+ if (NILP (alpha))
+ return;
+
+ if (FLOATP (alpha))
+ {
+ if ((XFLOAT_DATA (alpha) >= 0.0) && (XFLOAT_DATA (alpha) <= 1.0))
+ {
+ f->active_alpha = XFLOAT_DATA (alpha);
+
+ BLOCK_INPUT;
+
+ x_set_frame_alpha (f, 1);
+
+ UNBLOCK_INPUT;
+ }
+ }
+
+ return;
+}
+
+void
+x_set_inactive_alpha (f, alpha, old_alpha)
+ struct frame *f;
+ Lisp_Object alpha, old_alpha;
+{
+ /* Don't change the alpha if it's already ALPHA. */
+ if (EQ (alpha, f->inactive_alpha))
+ return;
+
+ if (NILP (alpha))
+ return;
+
+ if (FLOATP (alpha))
+ {
+ if ((XFLOAT_DATA (alpha) >= 0.0) && (XFLOAT_DATA (alpha) <= 1.0))
+ {
+ f->inactive_alpha = XFLOAT_DATA (alpha);
+ }
+ }
+
+ return;
+}
\f
/* Subroutines of creating a frame. */
@@ -4321,6 +4379,10 @@
"cursorType", "CursorType", RES_TYPE_SYMBOL);
x_default_parameter (f, parameters, Qscroll_bar_width, Qnil,
"scrollBarWidth", "ScrollBarWidth", RES_TYPE_NUMBER);
+ x_default_parameter (f, parameters, Qactive_alpha, make_float(1.0),
+ "activeAlpha", "ActiveAlpha", RES_TYPE_FLOAT);
+ x_default_parameter (f, parameters, Qinactive_alpha, make_float(1.0),
+ "inactiveAlpha", "InactiveAlpha", RES_TYPE_FLOAT);
/* Dimensions, especially FRAME_LINES (f), must be done via change_frame_size.
Change will not be effected unless different from the current
@@ -8473,6 +8535,8 @@
x_set_fringe_width,
0, /* x_set_wait_for_wm, */
x_set_fullscreen,
+ x_set_active_alpha,
+ x_set_inactive_alpha,
};
void
@@ -8912,6 +8976,9 @@
/* ditto for GetClipboardSequenceNumber. */
clipboard_sequence_fn = (ClipboardSequence_Proc)
GetProcAddress (user32_lib, "GetClipboardSequenceNumber");
+ /* ditto for SetLayeredWindowAttributes. */
+ set_layered_window_attributes_fn = (SetLayeredWindowAttributes_Proc)
+ GetProcAddress (user32_lib, "SetLayeredWindowAttributes");
DEFVAR_INT ("w32-ansi-code-page",
&w32_ansi_code_page,
--- src/w32term.c.orig 2005-06-21 10:25:29.686875000 +0900
+++ src/w32term.c 2005-06-21 10:26:44.780625000 +0900
@@ -272,6 +272,8 @@
static Lisp_Object Qvendor_specific_keysyms;
+SetLayeredWindowAttributes_Proc set_layered_window_attributes_fn = NULL;
+
\f
/***********************************************************************
Debugging
@@ -1187,6 +1189,25 @@
return ANSI_FONT;
}
+void
+x_set_frame_alpha (f, activate_p)
+ struct frame *f;
+ int activate_p;
+{
+ Window window = FRAME_W32_WINDOW (f);
+
+ if (set_layered_window_attributes_fn != NULL) {
+ SetWindowLong (window, GWL_EXSTYLE,
+ GetWindowLong (window, GWL_EXSTYLE)|WS_EX_LAYERED);
+ set_layered_window_attributes_fn (FRAME_W32_WINDOW (f),
+ RGB(255, 255, 255),
+ (int)((activate_p?
+ f->active_alpha:
+ f->inactive_alpha)
+ * 255.0),
+ LWA_ALPHA);
+ }
+}
\f
/***********************************************************************
@@ -2786,6 +2807,7 @@
struct frame *f;
{
x_update_cursor (f, 1);
+ x_set_frame_alpha (f, 1);
}
static void
@@ -2793,6 +2815,7 @@
struct frame *f;
{
x_update_cursor (f, 1);
+ x_set_frame_alpha (f, 0);
}
/* The focus has changed. Update the frames as necessary to reflect
--- src/w32term.h.orig 2005-06-21 10:25:29.858750000 +0900
+++ src/w32term.h 2005-06-21 10:34:08.140000000 +0900
@@ -643,6 +643,10 @@
#define WND_EXTRA_BYTES (WND_LAST_INDEX)
+/* for transparency functions */
+#define LWA_ALPHA 2
+#define WS_EX_LAYERED 0x80000 /* w2k */
+
extern DWORD dwWindowsThreadId;
extern HANDLE hWindowsThread;
extern DWORD dwMainThreadId;
@@ -755,6 +759,8 @@
? BDF_1D_FONT : BDF_2D_FONT))
typedef DWORD (WINAPI * ClipboardSequence_Proc) ();
+typedef DWORD (WINAPI * SetLayeredWindowAttributes_Proc)
+ (HWND, DWORD, BYTE, DWORD);
typedef BOOL (WINAPI * AppendMenuW_Proc) (
IN HMENU,
IN UINT,
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next prev parent reply other threads:[~2005-06-21 11:18 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-11 8:02 [Mac OS X] [Win32] Frame-transparency patch Seiji Zenitani
2005-06-14 16:57 ` [Macemacsjp-dev 100] " Seiji Zenitani
2005-06-16 16:59 ` [Macemacsjp-dev 103] " Seiji Zenitani
2005-06-17 20:56 ` [Macemacsjp-dev 100] " Michael Mauger
2005-06-18 0:28 ` Takashi Hiromatsu
2005-06-20 20:36 ` Takashi Hiromatsu
2005-06-20 21:58 ` Juanma Barranquero
2005-06-20 22:00 ` Juanma Barranquero
2005-06-21 11:18 ` Takashi Hiromatsu [this message]
2005-06-21 15:29 ` Juanma Barranquero
2005-06-27 11:38 ` Takashi Hiromatsu
2005-06-21 16:23 ` Kevin Rodgers
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