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mutter/clutter/win32/clutter-event-win32.c
Neil Roberts e4304e2d0a * clutter/win32/clutter-stage-win32.c: Updated to the new layout 
API. All code to do with positioning the stage has been removed so
	the window is left where Windows wants to put it and it can not be
	moved with clutter_actor_set_position.

	* clutter/win32/clutter-stage-win32.h (ClutterStageWin32): Remove
	win_xpos and win_ypos.

	* clutter/win32/clutter-event-win32.c (message_translate): Remove
	the handler for WM_MOVE because the stage no longer cares where it
	is positioned.
2008-06-12 12:12:25 +00:00

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/* Clutter.
* An OpenGL based 'interactive canvas' library.
* Authored By Matthew Allum <mallum@openedhand.com>
* Copyright (C) 2006-2007 OpenedHand
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "clutter-stage-win32.h"
#include "clutter-backend-win32.h"
#include "clutter-win32.h"
#include "../clutter-backend.h"
#include "../clutter-event.h"
#include "../clutter-private.h"
#include "../clutter-debug.h"
#include "../clutter-main.h"
#include "../clutter-keysyms.h"
#include <string.h>
#include <glib.h>
#include <windows.h>
#include <windowsx.h>
typedef struct _ClutterEventSource ClutterEventSource;
struct _ClutterEventSource
{
GSource source;
ClutterBackend *backend;
GPollFD event_poll_fd;
};
static gboolean clutter_event_prepare (GSource *source,
gint *timeout);
static gboolean clutter_event_check (GSource *source);
static gboolean clutter_event_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data);
static GSourceFuncs event_funcs = {
clutter_event_prepare,
clutter_event_check,
clutter_event_dispatch,
NULL
};
/* Special mapping for some keys that don't have a direct Unicode
value. Must be sorted by the numeric value of the Windows key
virtual key code */
static const struct
{
gushort win_sym, clutter_sym;
} clutter_win32_key_map[] =
{
{ VK_CANCEL, CLUTTER_Cancel },
{ VK_BACK, CLUTTER_BackSpace },
{ VK_TAB, CLUTTER_Tab },
{ VK_CLEAR, CLUTTER_Clear },
{ VK_RETURN, CLUTTER_Return },
{ VK_MENU, CLUTTER_Menu },
{ VK_PAUSE, CLUTTER_Pause },
{ VK_HANGUL, CLUTTER_Hangul },
{ VK_KANJI, CLUTTER_Kanji },
{ VK_ESCAPE, CLUTTER_Escape },
{ VK_SPACE, CLUTTER_space },
{ VK_PRIOR, CLUTTER_Prior },
{ VK_NEXT, CLUTTER_Next },
{ VK_END, CLUTTER_End },
{ VK_HOME, CLUTTER_Home },
{ VK_LEFT, CLUTTER_Left },
{ VK_UP, CLUTTER_Up },
{ VK_RIGHT, CLUTTER_Right },
{ VK_DOWN, CLUTTER_Down },
{ VK_SELECT, CLUTTER_Select },
{ VK_PRINT, CLUTTER_Print },
{ VK_EXECUTE, CLUTTER_Execute },
{ VK_INSERT, CLUTTER_Insert },
{ VK_DELETE, CLUTTER_Delete },
{ VK_HELP, CLUTTER_Help },
{ VK_MULTIPLY, CLUTTER_multiply },
{ VK_F1, CLUTTER_F1 },
{ VK_F2, CLUTTER_F2 },
{ VK_F3, CLUTTER_F3 },
{ VK_F4, CLUTTER_F4 },
{ VK_F5, CLUTTER_F5 },
{ VK_F6, CLUTTER_F6 },
{ VK_F7, CLUTTER_F7 },
{ VK_F8, CLUTTER_F8 },
{ VK_F9, CLUTTER_F9 },
{ VK_F10, CLUTTER_F10 },
{ VK_F11, CLUTTER_F11 },
{ VK_F12, CLUTTER_F12 },
{ VK_F13, CLUTTER_F13 },
{ VK_F14, CLUTTER_F14 },
{ VK_F15, CLUTTER_F15 },
{ VK_F16, CLUTTER_F16 },
{ VK_F17, CLUTTER_F17 },
{ VK_F18, CLUTTER_F18 },
{ VK_F19, CLUTTER_F19 },
{ VK_F20, CLUTTER_F20 },
{ VK_F21, CLUTTER_F21 },
{ VK_F22, CLUTTER_F22 },
{ VK_F23, CLUTTER_F23 },
{ VK_F24, CLUTTER_F24 },
{ VK_LSHIFT, CLUTTER_Shift_L },
{ VK_RSHIFT, CLUTTER_Shift_R },
{ VK_LCONTROL, CLUTTER_Control_L },
{ VK_RCONTROL, CLUTTER_Control_R }
};
#define CLUTTER_WIN32_KEY_MAP_SIZE (sizeof (clutter_win32_key_map) \
/ sizeof (clutter_win32_key_map[0]))
static GSource *
clutter_event_source_new (ClutterBackend *backend)
{
GSource *source = g_source_new (&event_funcs, sizeof (ClutterEventSource));
ClutterEventSource *event_source = (ClutterEventSource *) source;
event_source->backend = backend;
return source;
}
void
_clutter_backend_win32_events_init (ClutterBackend *backend)
{
ClutterBackendWin32 *backend_win32 = CLUTTER_BACKEND_WIN32 (backend);
GSource *source;
ClutterEventSource *event_source;
source = backend_win32->event_source = clutter_event_source_new (backend);
event_source = (ClutterEventSource *) source;
g_source_set_priority (source, CLUTTER_PRIORITY_EVENTS);
event_source->event_poll_fd.fd = G_WIN32_MSG_HANDLE;
event_source->event_poll_fd.events = G_IO_IN;
g_source_add_poll (source, &event_source->event_poll_fd);
g_source_set_can_recurse (source, TRUE);
g_source_attach (source, NULL);
}
void
_clutter_backend_win32_events_uninit (ClutterBackend *backend)
{
ClutterBackendWin32 *backend_win32 = CLUTTER_BACKEND_WIN32 (backend);
if (backend_win32->event_source)
{
CLUTTER_NOTE (EVENT, "Destroying the event source");
g_source_destroy (backend_win32->event_source);
g_source_unref (backend_win32->event_source);
backend_win32->event_source = NULL;
}
}
static gboolean
check_msg_pending ()
{
MSG msg;
return PeekMessageW (&msg, NULL, 0, 0, PM_NOREMOVE) ? TRUE : FALSE;
}
static ClutterModifierType
get_modifier_state (WPARAM wparam)
{
ClutterModifierType ret = 0;
if ((wparam & MK_SHIFT))
ret |= CLUTTER_SHIFT_MASK;
if ((wparam & MK_CONTROL))
ret |= CLUTTER_CONTROL_MASK;
if ((wparam & MK_LBUTTON))
ret |= CLUTTER_BUTTON1_MASK;
if ((wparam & MK_MBUTTON))
ret |= CLUTTER_BUTTON2_MASK;
if ((wparam & MK_RBUTTON))
ret |= CLUTTER_BUTTON3_MASK;
return ret;
}
static void
make_button_event (const MSG *msg, ClutterEvent *event,
int button, int click_count, gboolean release)
{
event->type = release ? CLUTTER_BUTTON_RELEASE : CLUTTER_BUTTON_PRESS;
event->button.time = msg->time;
event->button.x = GET_X_LPARAM (msg->lParam);
event->button.y = GET_Y_LPARAM (msg->lParam);
event->button.modifier_state = get_modifier_state (msg->wParam);
event->button.button = button;
event->button.click_count = click_count;
}
/**
* clutter_win32_disable_event_retrieval
*
* Disables retrieval of Windows messages in the main loop. Use to
* create event-less canvas.
*
* This function can only be called before calling clutter_init().
*
* Since: 0.8
*/
void
clutter_win32_disable_event_retrieval (void)
{
ClutterBackendWin32 *backend;
ClutterMainContext *clutter_context;
clutter_context = clutter_context_get_default ();
backend = CLUTTER_BACKEND_WIN32 (clutter_context->backend);
backend->no_event_retrieval = TRUE;
}
static gboolean
clutter_event_prepare (GSource *source,
gint *timeout)
{
gboolean retval;
clutter_threads_enter ();
*timeout = -1;
retval = (clutter_events_pending () || check_msg_pending ());
clutter_threads_leave ();
return retval;
}
static gboolean
clutter_event_check (GSource *source)
{
ClutterEventSource *event_source = (ClutterEventSource *) source;
gboolean retval;
clutter_threads_enter ();
if ((event_source->event_poll_fd.revents & G_IO_IN))
retval = (clutter_events_pending () || check_msg_pending ());
else
retval = FALSE;
clutter_threads_leave ();
return retval;
}
static gboolean
clutter_event_dispatch (GSource *source,
GSourceFunc callback,
gpointer user_data)
{
ClutterEvent *event;
MSG msg;
clutter_threads_enter ();
/* Process Windows messages until we've got one that translates into
the clutter event queue */
while (!clutter_events_pending () && PeekMessageW (&msg, NULL,
0, 0, PM_REMOVE))
DispatchMessageW (&msg);
/* Pop an event off the queue if any */
if ((event = clutter_event_get ()))
{
/* forward the event into clutter for emission etc. */
clutter_do_event (event);
clutter_event_free (event);
}
clutter_threads_leave ();
return TRUE;
}
static ClutterModifierType
get_key_modifier_state (const BYTE *key_states)
{
ClutterModifierType ret = 0;
if ((key_states[VK_SHIFT] & 0x80)
|| (key_states[VK_LSHIFT] & 0x80)
|| (key_states[VK_RSHIFT] & 0x80))
ret |= CLUTTER_SHIFT_MASK;
if ((key_states[VK_CONTROL] & 0x80)
|| (key_states[VK_LCONTROL] & 0x80)
|| (key_states[VK_RCONTROL] & 0x80))
ret |= CLUTTER_CONTROL_MASK;
if ((key_states[VK_MENU] & 0x80)
|| (key_states[VK_LMENU] & 0x80)
|| (key_states[VK_RMENU] & 0x80))
ret |= CLUTTER_MOD1_MASK;
if (key_states[VK_CAPITAL])
ret |= CLUTTER_LOCK_MASK;
return ret;
}
static gboolean
message_translate (ClutterBackend *backend,
ClutterEvent *event,
const MSG *msg,
gboolean *call_def_window_proc)
{
ClutterBackendWin32 *backend_win32;
ClutterStageWin32 *stage_win32;
ClutterStage *stage;
ClutterStageWindow *impl;
gboolean res;
backend_win32 = CLUTTER_BACKEND_WIN32 (backend);
/* Do further processing only on events for the stage window */
stage = clutter_win32_get_stage_from_window (msg->hwnd);
if (stage == NULL)
return FALSE;
impl = _clutter_stage_get_window (stage);
stage_win32 = CLUTTER_STAGE_WIN32 (impl);
event->any.stage = stage;
res = TRUE;
switch (msg->message)
{
case WM_SIZE:
if (!stage_win32->is_foreign_win)
{
WORD new_width = LOWORD (msg->lParam);
WORD new_height = HIWORD (msg->lParam);
guint old_width, old_height;
clutter_actor_get_size (CLUTTER_ACTOR (stage),
&old_width, &old_height);
if (new_width != old_width || new_height != old_height)
clutter_actor_set_size (CLUTTER_ACTOR (stage),
new_width, new_height);
}
res = FALSE;
break;
case WM_SHOWWINDOW:
if (msg->wParam)
clutter_stage_win32_map (stage_win32);
else
clutter_stage_win32_unmap (stage_win32);
res = FALSE;
break;
case WM_ACTIVATE:
if (msg->wParam == WA_INACTIVE)
{
if (stage_win32->state & CLUTTER_STAGE_STATE_ACTIVATED)
{
stage_win32->state &= ~CLUTTER_STAGE_STATE_ACTIVATED;
event->type = CLUTTER_STAGE_STATE;
event->stage_state.changed_mask = CLUTTER_STAGE_STATE_ACTIVATED;
event->stage_state.new_state = stage_win32->state;
}
else
res = FALSE;
break;
}
else
{
if (!(stage_win32->state & CLUTTER_STAGE_STATE_ACTIVATED))
{
stage_win32->state |= CLUTTER_STAGE_STATE_ACTIVATED;
event->type = CLUTTER_STAGE_STATE;
event->stage_state.changed_mask = CLUTTER_STAGE_STATE_ACTIVATED;
event->stage_state.new_state = stage_win32->state;
}
else
res = FALSE;
}
break;
case WM_PAINT:
CLUTTER_NOTE (MULTISTAGE, "expose for stage:%p, redrawing", stage);
clutter_redraw (stage);
res = FALSE;
break;
case WM_DESTROY:
CLUTTER_NOTE (EVENT, "WM_DESTROY");
event->type = CLUTTER_DESTROY_NOTIFY;
break;
case WM_CLOSE:
CLUTTER_NOTE (EVENT, "WM_CLOSE");
event->type = CLUTTER_DELETE;
/* The default window proc will destroy the window so we want to
prevent this to allow applications to optionally destroy the
window themselves */
if (call_def_window_proc)
*call_def_window_proc = FALSE;
break;
case WM_LBUTTONDOWN:
make_button_event (msg, event, 1, 1, FALSE);
break;
case WM_MBUTTONDOWN:
make_button_event (msg, event, 2, 1, FALSE);
break;
case WM_RBUTTONDOWN:
make_button_event (msg, event, 3, 1, FALSE);
break;
case WM_LBUTTONUP:
make_button_event (msg, event, 1, 1, TRUE);
break;
case WM_MBUTTONUP:
make_button_event (msg, event, 2, 1, TRUE);
break;
case WM_RBUTTONUP:
make_button_event (msg, event, 3, 1, TRUE);
break;
case WM_LBUTTONDBLCLK:
make_button_event (msg, event, 1, 2, FALSE);
break;
case WM_MBUTTONDBLCLK:
make_button_event (msg, event, 2, 2, FALSE);
break;
case WM_RBUTTONDBLCLK:
make_button_event (msg, event, 3, 2, FALSE);
break;
case WM_MOUSEWHEEL:
stage_win32->scroll_pos += (SHORT) HIWORD (msg->wParam);
event->type = CLUTTER_SCROLL;
event->scroll.time = msg->time;
event->scroll.x = GET_X_LPARAM (msg->lParam);
event->scroll.y = GET_Y_LPARAM (msg->lParam);
event->scroll.modifier_state
= get_modifier_state (LOWORD (msg->wParam));
if (stage_win32->scroll_pos >= WHEEL_DELTA)
{
event->scroll.direction = CLUTTER_SCROLL_UP;
stage_win32->scroll_pos -= WHEEL_DELTA;
}
else if (stage_win32->scroll_pos <= -WHEEL_DELTA)
{
event->scroll.direction = CLUTTER_SCROLL_DOWN;
stage_win32->scroll_pos += WHEEL_DELTA;
}
else
res = FALSE;
break;
case WM_MOUSEMOVE:
event->type = CLUTTER_MOTION;
event->motion.time = msg->time;
event->motion.x = GET_X_LPARAM (msg->lParam);
event->motion.y = GET_Y_LPARAM (msg->lParam);
event->motion.modifier_state = get_modifier_state (msg->wParam);
break;
case WM_KEYDOWN:
case WM_KEYUP:
case WM_SYSKEYDOWN:
case WM_SYSKEYUP:
{
int scan_code = (msg->lParam >> 16) & 0xff;
int min = 0, max = CLUTTER_WIN32_KEY_MAP_SIZE, mid;
BYTE key_states[256];
/* Get the keyboard modifier states. GetKeyboardState
conveniently gets the key state that was current when the
last keyboard message read was generated */
GetKeyboardState(key_states);
/* Binary chop to check if we have a direct mapping for this
key code */
while (min < max)
{
mid = (min + max) / 2;
if (clutter_win32_key_map[mid].win_sym == msg->wParam)
{
event->key.keyval = clutter_win32_key_map[mid].clutter_sym;
event->key.unicode_value = 0;
break;
}
else if (clutter_win32_key_map[mid].win_sym < msg->wParam)
min = mid + 1;
else
max = mid;
}
/* If we don't have a direct mapping then try getting the
unicode value of the key sym */
if (min >= max)
{
WCHAR ch;
BYTE shift_state[256];
/* Translate to a Unicode value, but only take into
account the shift key. That way Ctrl+Shift+C will
generate a capital C virtual key code with a zero
unicode value for example */
memset (shift_state, 0, 256);
shift_state[VK_SHIFT] = key_states[VK_SHIFT];
shift_state[VK_LSHIFT] = key_states[VK_LSHIFT];
shift_state[VK_RSHIFT] = key_states[VK_RSHIFT];
shift_state[VK_CAPITAL] = key_states[VK_CAPITAL];
if (ToUnicode (msg->wParam, scan_code,
shift_state, &ch, 1, 0) == 1
/* The codes in this range directly match the Latin 1
codes so we can just use the Unicode value as the
key sym */
&& ch >= 0x20 && ch <= 0xff)
event->key.keyval = ch;
else
/* Otherwise we don't know what the key means but the
application might be able to do something with the
scan code so we might as well still generate the
event */
event->key.keyval = CLUTTER_VoidSymbol;
/* Get the unicode value of the keypress again using the
full modifier state */
if (ToUnicode (msg->wParam, scan_code,
key_states, &ch, 1, 0) == 1)
event->key.unicode_value = ch;
else
event->key.unicode_value = 0;
}
event->key.type = msg->message == WM_KEYDOWN
|| msg->message == WM_SYSKEYDOWN
? CLUTTER_KEY_PRESS : CLUTTER_KEY_RELEASE;
event->key.time = msg->time;
event->key.modifier_state = get_key_modifier_state (key_states);
event->key.hardware_keycode = scan_code;
}
break;
case WM_GETMINMAXINFO:
{
MINMAXINFO *min_max_info = (MINMAXINFO *) msg->lParam;
_clutter_stage_win32_get_min_max_info (stage_win32, min_max_info);
if (call_def_window_proc)
*call_def_window_proc = FALSE;
}
break;
default:
/* ignore every other message */
res = FALSE;
break;
}
return res;
}
LRESULT CALLBACK
_clutter_stage_win32_window_proc (HWND hwnd, UINT umsg,
WPARAM wparam, LPARAM lparam)
{
ClutterStageWin32 *stage_win32
= (ClutterStageWin32 *) GetWindowLongPtrW (hwnd, 0);
gboolean call_def_window_proc = TRUE;
/* Ignore any messages before SetWindowLongPtr has been called to
set the stage */
if (stage_win32 != NULL)
{
ClutterBackendWin32 *backend_win32 = stage_win32->backend;
MSG msg;
ClutterEvent *event;
ClutterMainContext *clutter_context;
DWORD message_pos = GetMessagePos ();
clutter_context = clutter_context_get_default ();
msg.hwnd = hwnd;
msg.message = umsg;
msg.wParam = wparam;
msg.lParam = lparam;
msg.time = GetMessageTime ();
/* Neither MAKE_POINTS nor GET_[XY]_LPARAM is defined in MinGW
headers so we need to convert to a signed type explicitly */
msg.pt.x = (SHORT) LOWORD (message_pos);
msg.pt.y = (SHORT) HIWORD (message_pos);
event = clutter_event_new (CLUTTER_NOTHING);
if (message_translate (CLUTTER_BACKEND (backend_win32), event,
&msg, &call_def_window_proc))
/* push directly here to avoid copy of queue_put */
g_queue_push_head (clutter_context->events_queue, event);
else
clutter_event_free (event);
}
if (call_def_window_proc)
return DefWindowProcW (hwnd, umsg, wparam, lparam);
else
return 0;
}
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