Skip to content

D
dlib
Commit 5d29b7b3 authored by Davis King's avatar Davis King
Browse files
Options

Changed the gui core code around so that it should be safe to make window 

objects at the global scope

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402526
parent 82be8506
Hide whitespace changes
Inline Side-by-side
Showing with 361 additions and 295 deletions
dlib/gui_core/gui_core_kernel_1.cpp
View file @ 5d29b7b3
...@@ -36,42 +36,6 @@ namespace dlib ...@@ -36,42 +36,6 @@ namespace dlib
namespace gui_core_kernel_1_globals namespace gui_core_kernel_1_globals
{ {
static logger dlog("dlib.gui_core");
static TCHAR window_class_name[] = TEXT ("w3049u6qc2d94thw9m34f4we0gvwa3-tgkser0-b9gm 05");
static HINSTANCE hInstance;
static HWND helper_window = NULL;
static bool core_has_been_initialized = false;
static bool quit_windows_loop = false;
static bool set_window_title_done = true;
static std::wstring window_title;
static bool move_window_done = true;
static HWND move_window_hwnd = NULL;
static int move_window_width = 0;
static int move_window_height = 0;
static int move_window_x = 0;
static int move_window_y = 0;
static bool request_new_window = false;
static DWORD dwStyle;
static HWND new_window = NULL;
static bool in_ime_composition = false;
// the window_table.get_mutex() mutex locks the above 11 variables
typedef sync_extension<binary_search_tree<HWND,base_window*>::kernel_1a>::kernel_1a
window_table_type;
// this variable holds a mapping from window handles to the base_window
// objects which represent them. Note that this objects mutex is always locked
// when inside the event loop.
static window_table_type window_table;
static rsignaler window_close_signaler(window_table.get_mutex());
static rsignaler et_signaler(window_table.get_mutex());
// note that this is the thread that will perform all the event
// processing.
thread_id_type event_thread_id;
struct user_event_type struct user_event_type
{ {
...@@ -80,8 +44,9 @@ namespace dlib ...@@ -80,8 +44,9 @@ namespace dlib
int i; int i;
}; };
typedef sync_extension<binary_search_tree<HWND,base_window*>::kernel_1a>::kernel_1a window_table_type;
typedef sync_extension<queue<user_event_type,memory_manager<char>::kernel_1b>::kernel_2a_c>::kernel_1a queue_of_user_events; typedef sync_extension<queue<user_event_type,memory_manager<char>::kernel_1b>::kernel_2a_c>::kernel_1a queue_of_user_events;
queue_of_user_events user_events;
enum USER_OFFSETS enum USER_OFFSETS
{ {
...@@ -96,6 +61,240 @@ namespace dlib ...@@ -96,6 +61,240 @@ namespace dlib
CALL_SET_WINDOW_TITLE CALL_SET_WINDOW_TITLE
}; };
// ----------------------------------------------------------------------------------------
class event_handler_thread : public threaded_object
{
public:
enum et_state
{
uninitialized,
initialized,
failure_to_init
};
et_state status;
queue_of_user_events user_events;
queue_of_user_events user_events_temp;
logger dlog;
HINSTANCE hInstance;
HWND helper_window;
const TCHAR* window_class_name;
bool should_destruct;
bool quit_windows_loop;
bool set_window_title_done;
std::wstring window_title;
bool move_window_done;
HWND move_window_hwnd;
int move_window_width;
int move_window_height;
int move_window_x;
int move_window_y;
bool request_new_window;
DWORD dwStyle;
HWND new_window;
bool in_ime_composition;
bool event_thread_started;
// the window_table.get_mutex() mutex locks the above 11 variables
// this variable holds a mapping from window handles to the base_window
// objects which represent them. Note that this objects mutex is always locked
// when inside the event loop.
window_table_type window_table;
rsignaler window_close_signaler;
rsignaler et_signaler;
// note that this is the thread that will perform all the event
// processing.
thread_id_type event_thread_id;
event_handler_thread(
) :
dlog("dlib.gui_core"),
hInstance(0),
helper_window(0),
window_class_name(TEXT ("w3049u6qc2d94thw9m34f4we0gvwa3-tgkser0-b9gm 05")),
should_destruct(false),
quit_windows_loop(false),
set_window_title_done(true),
move_window_done(true),
move_window_hwnd(0),
move_window_width(0),
move_window_height(0),
move_window_x(0),
move_window_y(0),
request_new_window(false),
dwStyle(0),
new_window(0),
in_ime_composition(false),
event_thread_started(false),
window_close_signaler(window_table.get_mutex()),
et_signaler(window_table.get_mutex())
{
status = uninitialized;
}
void start_event_thread (
)
/*!
we can't call this function from this objects constructor because
starting the event thread in windows involves sending messages to the
WndProc() and that requires this object to be fully constructed.
!*/
{
if (event_thread_started == false)
{
auto_mutex M(window_table.get_mutex());
if (event_thread_started == false)
{
event_thread_started = true;
// start up the event handler thread
start();
// wait for the event thread to get up and running
while (status == uninitialized)
et_signaler.wait();
if (status == failure_to_init)
throw gui_error("Failed to start event thread");
}
}
}
~event_handler_thread ()
{
using namespace gui_core_kernel_1_globals;
if (is_alive())
{
if (PostMessage(helper_window,WM_USER+QUIT_EVENT_HANDLER_THREAD,0,0)==0)
{
dlog << LERROR << "Unable to schedule function for execution in event handling thread.";
}
wait();
}
}
private:
void thread (
)
{
event_thread_id = get_thread_id();
hInstance = GetModuleHandle(NULL);
if (hInstance == NULL)
{
dlog << LFATAL << "Error gathering needed resources";
// signal that an error has occurred
window_table.get_mutex().lock();
status = failure_to_init;
et_signaler.broadcast();
window_table.get_mutex().unlock();
return;
}
// register the main window class
WNDCLASS wndclass ;
wndclass.style = CS_DBLCLKS;
wndclass.lpfnWndProc = dlib::gui_core_kernel_1_globals::WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = 0;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = window_class_name ;
if (!RegisterClass (&wndclass))
{
dlog << LFATAL << "Error registering window class";
// signal that an error has occurred
window_table.get_mutex().lock();
status = failure_to_init;
et_signaler.broadcast();
window_table.get_mutex().unlock();
return;
}
// make the helper window that is used to trigger events in the
// event handler loop from other threads
TCHAR nothing[] = TEXT("");
helper_window = CreateWindow(window_class_name,nothing,WS_DISABLED,0,0,0,0,HWND_MESSAGE,NULL,hInstance,NULL);
if (helper_window == NULL)
{
dlog << LFATAL << "Error gathering needed resources";
// signal that an error has occurred
window_table.get_mutex().lock();
status = failure_to_init;
et_signaler.broadcast();
window_table.get_mutex().unlock();
return;
}
// signal that the event thread is now up and running
window_table.get_mutex().lock();
status = initialized;
et_signaler.broadcast();
window_table.get_mutex().unlock();
// start the event handler loop.
/*
A note about this quit_windows_loop thing. If the user is holding
the mouse button down on the title bar of a window it will cause
the PostQuitMessage() function to be ignored!! This extra bool
is a work around to prevent that from happening.
*/
MSG msg;
while (GetMessage (&msg, NULL, 0, 0) &&
quit_windows_loop == false)
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
}
};
event_handler_thread& globals()
{
static event_handler_thread* p = new event_handler_thread;
p->start_event_thread();
return *p;
}
struct event_handler_thread_destruct_helper
{
~event_handler_thread_destruct_helper()
{
globals().window_table.get_mutex().lock();
// if there aren't any more gui windows then we can destroy the event handler thread
if (globals().window_table.size() == 0)
{
globals().window_table.get_mutex().unlock();
delete &globals();
}
else
{
globals().should_destruct = true;
globals().window_table.get_mutex().unlock();
}
}
};
static event_handler_thread_destruct_helper just_a_name;
// ---------------------------------------------------------------------------------------- // ----------------------------------------------------------------------------------------
struct ebh_param struct ebh_param
...@@ -460,13 +659,15 @@ namespace dlib ...@@ -460,13 +659,15 @@ namespace dlib
) )
{ {
using namespace gui_core_kernel_1_globals; using namespace gui_core_kernel_1_globals;
queue_of_user_events user_events_temp;
// Make the event processing thread have a priority slightly above normal. // Make the event processing thread have a priority slightly above normal.
// This makes the GUI smother if you do heavy processing in other threads. // This makes the GUI smother if you do heavy processing in other threads.
HANDLE hand = OpenThread(THREAD_ALL_ACCESS,FALSE,GetCurrentThreadId()); HANDLE hand = OpenThread(THREAD_ALL_ACCESS,FALSE,GetCurrentThreadId());
SetThreadPriority(hand,THREAD_PRIORITY_ABOVE_NORMAL); SetThreadPriority(hand,THREAD_PRIORITY_ABOVE_NORMAL);
CloseHandle(hand); CloseHandle(hand);
window_table_type& window_table = globals().window_table;
HWND& helper_window = globals().helper_window;
auto_mutex M(window_table.get_mutex()); auto_mutex M(window_table.get_mutex());
try try
...@@ -481,7 +682,7 @@ namespace dlib ...@@ -481,7 +682,7 @@ namespace dlib
case WM_USER+QUIT_EVENT_HANDLER_THREAD: case WM_USER+QUIT_EVENT_HANDLER_THREAD:
if (hwnd == helper_window) if (hwnd == helper_window)
{ {
quit_windows_loop = true; globals().quit_windows_loop = true;
PostQuitMessage(0); PostQuitMessage(0);
} }
return 0; return 0;
...@@ -497,14 +698,14 @@ namespace dlib ...@@ -497,14 +698,14 @@ namespace dlib
if (hwnd == helper_window) if (hwnd == helper_window)
{ {
MoveWindow( MoveWindow(
move_window_hwnd, globals().move_window_hwnd,
move_window_x, globals().move_window_x,
move_window_y, globals().move_window_y,
move_window_width, globals().move_window_width,
move_window_height, globals().move_window_height,
TRUE); TRUE);
move_window_done = true; globals().move_window_done = true;
et_signaler.broadcast(); globals().et_signaler.broadcast();
} }
return 0; return 0;
...@@ -512,14 +713,14 @@ namespace dlib ...@@ -512,14 +713,14 @@ namespace dlib
if (hwnd == helper_window) if (hwnd == helper_window)
{ {
// this is the signal to look in the user_events queue // this is the signal to look in the user_events queue
user_events.lock(); globals().user_events.lock();
user_events.swap(user_events_temp); globals().user_events.swap(globals().user_events_temp);
user_events.unlock(); globals().user_events.unlock();
user_events_temp.reset(); globals().user_events_temp.reset();
// now dispatch all these user events // now dispatch all these user events
while (user_events_temp.move_next()) while (globals().user_events_temp.move_next())
{ {
base_window** win_ = window_table[user_events_temp.element().w]; base_window** win_ = window_table[globals().user_events_temp.element().w];
base_window* win; base_window* win;
// if this window exists in the window table then dispatch // if this window exists in the window table then dispatch
// its event. // its event.
...@@ -527,12 +728,12 @@ namespace dlib ...@@ -527,12 +728,12 @@ namespace dlib
{ {
win = *win_; win = *win_;
win->on_user_event( win->on_user_event(
user_events_temp.element().p, globals().user_events_temp.element().p,
user_events_temp.element().i globals().user_events_temp.element().i
); );
} }
} }
user_events_temp.clear(); globals().user_events_temp.clear();
} }
return 0; return 0;
...@@ -561,9 +762,9 @@ namespace dlib ...@@ -561,9 +762,9 @@ namespace dlib
case WM_USER+CALL_SET_WINDOW_TITLE: case WM_USER+CALL_SET_WINDOW_TITLE:
if (hwnd == helper_window) if (hwnd == helper_window)
{ {
SetWindowTextW((HWND)wParam,window_title.c_str()); SetWindowTextW((HWND)wParam,globals().window_title.c_str());
set_window_title_done = true; globals().set_window_title_done = true;
et_signaler.broadcast(); globals().et_signaler.broadcast();
} }
return 0; return 0;
...@@ -573,36 +774,36 @@ namespace dlib ...@@ -573,36 +774,36 @@ namespace dlib
{ {
// if this is stupposed to be a popup window then do the popup window thing // if this is stupposed to be a popup window then do the popup window thing
if (dwStyle == WS_CHILD) if (globals().dwStyle == WS_CHILD)
{ {
TCHAR nothing[] = TEXT(""); TCHAR nothing[] = TEXT("");
new_window = CreateWindowEx (WS_EX_TOOLWINDOW,window_class_name, nothing, globals().new_window = CreateWindowEx (WS_EX_TOOLWINDOW,globals().window_class_name, nothing,
dwStyle, globals().dwStyle,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
helper_window, NULL, hInstance, NULL); helper_window, NULL, globals().hInstance, NULL);
SetParent(new_window,NULL); SetParent(globals().new_window,NULL);
} }
else else
{ {
TCHAR nothing[] = TEXT(""); TCHAR nothing[] = TEXT("");
new_window = CreateWindow (window_class_name, nothing, globals().new_window = CreateWindow (globals().window_class_name, nothing,
dwStyle, globals().dwStyle,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL); NULL, NULL, globals().hInstance, NULL);
} }
// use the helper_window to indicate that CreateWindow failed // use the helper_window to indicate that CreateWindow failed
if (new_window == NULL) if (globals().new_window == NULL)
new_window = helper_window; globals().new_window = helper_window;
et_signaler.broadcast(); globals().et_signaler.broadcast();
} }
return 0; return 0;
case WM_SYSKEYDOWN: case WM_SYSKEYDOWN:
case WM_KEYDOWN: case WM_KEYDOWN:
{ {
if (in_ime_composition) break; if (globals().in_ime_composition) break;
base_window** win_ = window_table[hwnd]; base_window** win_ = window_table[hwnd];
base_window* win; base_window* win;
...@@ -1123,7 +1324,7 @@ namespace dlib ...@@ -1123,7 +1324,7 @@ namespace dlib
window_table.destroy(hwnd); window_table.destroy(hwnd);
win->has_been_destroyed = true; win->has_been_destroyed = true;
win->hwnd = 0; win->hwnd = 0;
gui_core_kernel_1_globals::window_close_signaler.broadcast(); globals().window_close_signaler.broadcast();
} }
else else
{ {
...@@ -1137,12 +1338,12 @@ namespace dlib ...@@ -1137,12 +1338,12 @@ namespace dlib
return DefWindowProc (hwnd, message, wParam, lParam); return DefWindowProc (hwnd, message, wParam, lParam);
case WM_IME_STARTCOMPOSITION: case WM_IME_STARTCOMPOSITION:
in_ime_composition = true; globals().in_ime_composition = true;
break; break;
case WM_IME_COMPOSITION: case WM_IME_COMPOSITION:
{ {
in_ime_composition = false; globals().in_ime_composition = false;
base_window** win_ = window_table[hwnd]; base_window** win_ = window_table[hwnd];
base_window* win; base_window* win;
if (win_) if (win_)
...@@ -1180,12 +1381,12 @@ namespace dlib ...@@ -1180,12 +1381,12 @@ namespace dlib
catch (std::exception& e) catch (std::exception& e)
{ {
error_box("Exception thrown in event handler",e.what()); error_box("Exception thrown in event handler",e.what());
quit_windows_loop = true; globals().quit_windows_loop = true;
} }
catch (...) catch (...)
{ {
error_box("Exception thrown in event handler","Unknown Exception type."); error_box("Exception thrown in event handler","Unknown Exception type.");
quit_windows_loop = true; globals().quit_windows_loop = true;
} }
return DefWindowProc (hwnd, message, wParam, lParam) ; return DefWindowProc (hwnd, message, wParam, lParam) ;
...@@ -1199,7 +1400,7 @@ namespace dlib ...@@ -1199,7 +1400,7 @@ namespace dlib
) )
{ {
using namespace gui_core_kernel_1_globals; using namespace gui_core_kernel_1_globals;
PostMessage(helper_window,WM_USER+SHOW_WINDOW_SHOW,(WPARAM)hwnd,0); PostMessage(globals().helper_window,WM_USER+SHOW_WINDOW_SHOW,(WPARAM)hwnd,0);
} }
// ---------------------------------------------------------------------------------------- // ----------------------------------------------------------------------------------------
...@@ -1209,7 +1410,7 @@ namespace dlib ...@@ -1209,7 +1410,7 @@ namespace dlib
) )
{ {
using namespace gui_core_kernel_1_globals; using namespace gui_core_kernel_1_globals;
PostMessage(helper_window,WM_USER+SHOW_WINDOW_HIDE,(WPARAM)hwnd,0); PostMessage(globals().helper_window,WM_USER+SHOW_WINDOW_HIDE,(WPARAM)hwnd,0);
} }
// ---------------------------------------------------------------------------------------- // ----------------------------------------------------------------------------------------
...@@ -1223,7 +1424,7 @@ namespace dlib ...@@ -1223,7 +1424,7 @@ namespace dlib
!*/ !*/
{ {
using namespace gui_core_kernel_1_globals; using namespace gui_core_kernel_1_globals;
PostMessage(helper_window,WM_USER+SET_ACTIVE_WINDOW,(WPARAM)hwnd,0); PostMessage(globals().helper_window,WM_USER+SET_ACTIVE_WINDOW,(WPARAM)hwnd,0);
} }
// ---------------------------------------------------------------------------------------- // ----------------------------------------------------------------------------------------
...@@ -1237,7 +1438,7 @@ namespace dlib ...@@ -1237,7 +1438,7 @@ namespace dlib
!*/ !*/
{ {
using namespace gui_core_kernel_1_globals; using namespace gui_core_kernel_1_globals;
PostMessage(helper_window,WM_USER+DESTROY_WINDOW,(WPARAM)hwnd,0); PostMessage(globals().helper_window,WM_USER+DESTROY_WINDOW,(WPARAM)hwnd,0);
} }
// ---------------------------------------------------------------------------------------- // ----------------------------------------------------------------------------------------
...@@ -1258,56 +1459,56 @@ namespace dlib ...@@ -1258,56 +1459,56 @@ namespace dlib
using namespace gui_core_kernel_1_globals; using namespace gui_core_kernel_1_globals;
// if we are running in the event handling thread then just call // if we are running in the event handling thread then just call
// CreateWindow directly // CreateWindow directly
if (get_thread_id() == gui_core_kernel_1_globals::event_thread_id) if (get_thread_id() == globals().event_thread_id)
{ {
// if this is stupposed to be a popup window then do the popup window thing // if this is stupposed to be a popup window then do the popup window thing
if (dwStyle_ == WS_CHILD) if (dwStyle_ == WS_CHILD)
{ {
TCHAR nothing[] = TEXT(""); TCHAR nothing[] = TEXT("");
HWND tmp = CreateWindowEx (WS_EX_TOOLWINDOW|WS_EX_TOPMOST, window_class_name, nothing, HWND tmp = CreateWindowEx (WS_EX_TOOLWINDOW|WS_EX_TOPMOST, globals().window_class_name, nothing,
dwStyle_, dwStyle_,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
helper_window, NULL, hInstance, NULL); globals().helper_window, NULL, globals().hInstance, NULL);
SetParent(tmp,NULL); SetParent(tmp,NULL);
return tmp; return tmp;
} }
else else
{ {
TCHAR nothing[] = TEXT(""); TCHAR nothing[] = TEXT("");
return CreateWindow (window_class_name, nothing, return CreateWindow (globals().window_class_name, nothing,
dwStyle_, dwStyle_,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL); NULL, NULL, globals().hInstance, NULL);
} }
} }
else else
{ {
auto_mutex M(window_table.get_mutex()); auto_mutex M(globals().window_table.get_mutex());
// wait for our chance to make a new window request // wait for our chance to make a new window request
while (request_new_window) while (globals().request_new_window)
et_signaler.wait(); globals().et_signaler.wait();
dwStyle = dwStyle_; globals().dwStyle = dwStyle_;
if (PostMessage(helper_window,WM_USER+CREATE_WINDOW,0,0)==0) if (PostMessage(globals().helper_window,WM_USER+CREATE_WINDOW,0,0)==0)
{ {
throw gui_error("Unable to schedule function for execution in event handling thread."); throw gui_error("Unable to schedule function for execution in event handling thread.");
} }
// wait for our request to be serviced // wait for our request to be serviced
while (new_window == NULL) while (globals().new_window == NULL)
et_signaler.wait(); globals().et_signaler.wait();
HWND temp = new_window; HWND temp = globals().new_window;
new_window = NULL; globals().new_window = NULL;
request_new_window = false; globals().request_new_window = false;
et_signaler.broadcast(); globals().et_signaler.broadcast();
// if make_window() returns the helper_window then it means it failed // if make_window() returns the helper_window then it means it failed
// to make a new window // to make a new window
if (temp == helper_window) if (temp == globals().helper_window)
temp = NULL; temp = NULL;
return temp; return temp;
...@@ -1316,151 +1517,6 @@ namespace dlib ...@@ -1316,151 +1517,6 @@ namespace dlib
// ------------------------------------------------------------------------------------ // ------------------------------------------------------------------------------------
class event_handler_thread : public threaded_object
{
public:
enum et_state
{
uninitialized,
initialized,
failure_to_init
};
et_state status;
event_handler_thread(
)
{
status = uninitialized;
}
~event_handler_thread ()
{
using namespace gui_core_kernel_1_globals;
if (is_alive())
{
if (PostMessage(helper_window,WM_USER+QUIT_EVENT_HANDLER_THREAD,0,0)==0)
{
dlog << LERROR << "Unable to schedule function for execution in event handling thread.";
}
wait();
}
}
private:
void thread (
)
{
event_thread_id = get_thread_id();
hInstance = GetModuleHandle(NULL);
if (hInstance == NULL)
{
dlog << LFATAL << "Error gathering needed resources";
// signal that an error has occurred
window_table.get_mutex().lock();
status = failure_to_init;
et_signaler.broadcast();
window_table.get_mutex().unlock();
return;
}
// register the main window class
WNDCLASS wndclass ;
wndclass.style = CS_DBLCLKS;
wndclass.lpfnWndProc = dlib::gui_core_kernel_1_globals::WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = 0;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = window_class_name ;
if (!RegisterClass (&wndclass))
{
dlog << LFATAL << "Error registering window class";
// signal that an error has occurred
window_table.get_mutex().lock();
status = failure_to_init;
et_signaler.broadcast();
window_table.get_mutex().unlock();
return;
}
// make the helper window that is used to trigger events in the
// event handler loop from other threads
TCHAR nothing[] = TEXT("");
helper_window = CreateWindow(window_class_name,nothing,WS_DISABLED,0,0,0,0,HWND_MESSAGE,NULL,hInstance,NULL);
if (helper_window == NULL)
{
dlog << LFATAL << "Error gathering needed resources";
// signal that an error has occurred
window_table.get_mutex().lock();
status = failure_to_init;
et_signaler.broadcast();
window_table.get_mutex().unlock();
return;
}
// signal that the event thread is now up and running
window_table.get_mutex().lock();
status = initialized;
et_signaler.broadcast();
window_table.get_mutex().unlock();
// start the event handler loop.
/*
A note about this quit_windows_loop thing. If the user is holding
the mouse button down on the title bar of a window it will cause
the PostQuitMessage() function to be ignored!! This extra bool
is a work around to prevent that from happening.
*/
MSG msg;
while (GetMessage (&msg, NULL, 0, 0) &&
quit_windows_loop == false)
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
}
};
// ----------------------------------------------------------------------------------------
static event_handler_thread event_handler;
void init_gui_core ()
{
using namespace dlib::gui_core_kernel_1_globals;
auto_mutex M(window_table.get_mutex());
if (core_has_been_initialized == false)
{
core_has_been_initialized = true;
// start up the event handler thread
event_handler.start();
// wait for the event thread to get up and running
while (event_handler.status == event_handler_thread::uninitialized)
et_signaler.wait();
if (event_handler.status == event_handler_thread::failure_to_init)
throw gui_error("Failed to start event thread");
}
}
} // end namespace gui_core_kernel_1_globals } // end namespace gui_core_kernel_1_globals
...@@ -1526,11 +1582,11 @@ namespace dlib ...@@ -1526,11 +1582,11 @@ namespace dlib
e.p = p; e.p = p;
e.i = i; e.i = i;
{ {
auto_mutex M(user_events.get_mutex()); auto_mutex M(globals().user_events.get_mutex());
user_events.enqueue(e); globals().user_events.enqueue(e);
} }
if (PostMessage(helper_window,WM_USER+USER_EVENTS_READY,0,0)==0) if (PostMessage(globals().helper_window,WM_USER+USER_EVENTS_READY,0,0)==0)
{ {
throw gui_error("Unable to schedule function for execution in event handling thread."); throw gui_error("Unable to schedule function for execution in event handling thread.");
} }
...@@ -1547,16 +1603,15 @@ namespace dlib ...@@ -1547,16 +1603,15 @@ namespace dlib
prevx(-1), prevx(-1),
prevy(-1), prevy(-1),
prev_state(0), prev_state(0),
wm(gui_core_kernel_1_globals::window_table.get_mutex()) wm(gui_core_kernel_1_globals::globals().window_table.get_mutex())
{ {
using namespace gui_core_kernel_1_globals;
DLIB_ASSERT(!(undecorated == true && resizable == true), DLIB_ASSERT(!(undecorated == true && resizable == true),
"\tbase_window::base_window()" "\tbase_window::base_window()"
<< "\n\tThere is no such thing as an undecorated window that is resizable by the user." << "\n\tThere is no such thing as an undecorated window that is resizable by the user."
<< "\n\tthis: " << this << "\n\tthis: " << this
); );
gui_core_kernel_1_globals::init_gui_core();
if (resizable) if (resizable)
style = WS_OVERLAPPEDWINDOW; style = WS_OVERLAPPEDWINDOW;
else if (undecorated) else if (undecorated)
...@@ -1575,7 +1630,7 @@ namespace dlib ...@@ -1575,7 +1630,7 @@ namespace dlib
HWND temp = hwnd; HWND temp = hwnd;
base_window* ttemp = this; base_window* ttemp = this;
gui_core_kernel_1_globals::window_table.add(temp,ttemp); globals().window_table.add(temp,ttemp);
} }
// ---------------------------------------------------------------------------------------- // ----------------------------------------------------------------------------------------
...@@ -1584,7 +1639,22 @@ namespace dlib ...@@ -1584,7 +1639,22 @@ namespace dlib
~base_window ( ~base_window (
) )
{ {
using namespace gui_core_kernel_1_globals;
close_window(); close_window();
// check if we were the last window to be destroyed and the program is
// ending. If so then destroy the event handler thread's global object
wm.lock();
if (globals().window_table.size() == 0 && globals().should_destruct == true)
{
wm.unlock();
delete &globals();
}
else
{
// don't do anything except remember to unlock the wm mutex
wm.unlock();
}
} }
// ---------------------------------------------------------------------------------------- // ----------------------------------------------------------------------------------------
...@@ -1593,16 +1663,17 @@ namespace dlib ...@@ -1593,16 +1663,17 @@ namespace dlib
close_window ( close_window (
) )
{ {
using namespace gui_core_kernel_1_globals;
auto_mutex M(wm); auto_mutex M(wm);
if (has_been_destroyed == false) if (has_been_destroyed == false)
{ {
// do this just to make sure no one tries to call this window's // do this just to make sure no one tries to call this window's
// calbacks. // calbacks.
gui_core_kernel_1_globals::window_table.destroy(hwnd); globals().window_table.destroy(hwnd);
gui_core_kernel_1_globals::destroy_window(hwnd); gui_core_kernel_1_globals::destroy_window(hwnd);
hwnd = 0; hwnd = 0;
has_been_destroyed = true; has_been_destroyed = true;
gui_core_kernel_1_globals::window_close_signaler.broadcast(); globals().window_close_signaler.broadcast();
} }
} }
...@@ -1612,9 +1683,10 @@ namespace dlib ...@@ -1612,9 +1683,10 @@ namespace dlib
wait_until_closed ( wait_until_closed (
) const ) const
{ {
using namespace gui_core_kernel_1_globals;
auto_mutex M(wm); auto_mutex M(wm);
while (has_been_destroyed == false) while (has_been_destroyed == false)
gui_core_kernel_1_globals::window_close_signaler.wait(); globals().window_close_signaler.wait();
} }
// ---------------------------------------------------------------------------------------- // ----------------------------------------------------------------------------------------
...@@ -1663,23 +1735,23 @@ namespace dlib ...@@ -1663,23 +1735,23 @@ namespace dlib
// do this to avoid possible deadlocks. // do this to avoid possible deadlocks.
auto_mutex M(wm); auto_mutex M(wm);
if (get_thread_id() == gui_core_kernel_1_globals::event_thread_id) if (get_thread_id() == globals().event_thread_id)
{ {
SetWindowTextW(hwnd,title.c_str()); SetWindowTextW(hwnd,title.c_str());
} }
else else
{ {
window_title = title; globals().window_title = title;
set_window_title_done = false; globals().set_window_title_done = false;
if (PostMessage(helper_window,WM_USER+CALL_SET_WINDOW_TITLE,(WPARAM)hwnd,0)==0) if (PostMessage(globals().helper_window,WM_USER+CALL_SET_WINDOW_TITLE,(WPARAM)hwnd,0)==0)
{ {
throw gui_error("Unable to schedule SetWindowText function for execution in event handling thread."); throw gui_error("Unable to schedule SetWindowText function for execution in event handling thread.");
} }
// wait for any SetWindowText() calls to finish // wait for any SetWindowText() calls to finish
while (set_window_title_done == false) while (globals().set_window_title_done == false)
et_signaler.wait(); globals().et_signaler.wait();
} }
} }
...@@ -1732,7 +1804,7 @@ namespace dlib ...@@ -1732,7 +1804,7 @@ namespace dlib
<< "\n\theight: " << height_ << "\n\theight: " << height_
); );
auto_mutex M(wm); auto_mutex M(wm);
if (get_thread_id() == gui_core_kernel_1_globals::event_thread_id) if (get_thread_id() == globals().event_thread_id)
{ {
RECT info; RECT info;
GetWindowRect(hwnd,&info); GetWindowRect(hwnd,&info);
...@@ -1784,21 +1856,21 @@ namespace dlib ...@@ -1784,21 +1856,21 @@ namespace dlib
// have to do this because the MoveWindow() apparently blocks // have to do this because the MoveWindow() apparently blocks
// until something happens in the event thread so we have to // until something happens in the event thread so we have to
// do this to avoid possible deadlocks. // do this to avoid possible deadlocks.
move_window_hwnd = hwnd; globals().move_window_hwnd = hwnd;
move_window_x = x; globals().move_window_x = x;
move_window_y = y; globals().move_window_y = y;
move_window_width = width; globals().move_window_width = width;
move_window_height = height; globals().move_window_height = height;
move_window_done = false; globals().move_window_done = false;
if (PostMessage(helper_window,WM_USER+CALL_MOVE_WINDOW,0,0)==0) if (PostMessage(globals().helper_window,WM_USER+CALL_MOVE_WINDOW,0,0)==0)
{ {
throw gui_error("Unable to schedule MoveWindow function for execution in event handling thread."); throw gui_error("Unable to schedule MoveWindow function for execution in event handling thread.");
} }
// wait for any MoveWindow calls to finish // wait for any MoveWindow calls to finish
while (move_window_done == false) while (globals().move_window_done == false)
et_signaler.wait(); globals().et_signaler.wait();
} }
} }
...@@ -1820,7 +1892,7 @@ namespace dlib ...@@ -1820,7 +1892,7 @@ namespace dlib
<< "\n\ty: " << y_ << "\n\ty: " << y_
); );
auto_mutex M(wm); auto_mutex M(wm);
if (get_thread_id() == gui_core_kernel_1_globals::event_thread_id) if (get_thread_id() == globals().event_thread_id)
{ {
RECT info; RECT info;
GetWindowRect(hwnd,&info); GetWindowRect(hwnd,&info);
...@@ -1849,21 +1921,21 @@ namespace dlib ...@@ -1849,21 +1921,21 @@ namespace dlib
// have to do this because the MoveWindow() apparently blocks // have to do this because the MoveWindow() apparently blocks
// until something happens in the event thread so we have to // until something happens in the event thread so we have to
// do this to avoid possible deadlocks. // do this to avoid possible deadlocks.
move_window_hwnd = hwnd; globals().move_window_hwnd = hwnd;
move_window_x = x_; globals().move_window_x = x_;
move_window_y = y_; globals().move_window_y = y_;
move_window_width = width; globals().move_window_width = width;
move_window_height = height; globals().move_window_height = height;
move_window_done = false; globals().move_window_done = false;
if (PostMessage(helper_window,WM_USER+CALL_MOVE_WINDOW,0,0)==0) if (PostMessage(globals().helper_window,WM_USER+CALL_MOVE_WINDOW,0,0)==0)
{ {
throw gui_error("Unable to schedule MoveWindow function for execution in event handling thread."); throw gui_error("Unable to schedule MoveWindow function for execution in event handling thread.");
} }
// wait for any MoveWindow calls to finish // wait for any MoveWindow calls to finish
while (move_window_done == false) while (globals().move_window_done == false)
et_signaler.wait(); globals().et_signaler.wait();
} }
} }
...@@ -2007,12 +2079,10 @@ namespace dlib ...@@ -2007,12 +2079,10 @@ namespace dlib
using namespace gui_core_kernel_1_globals; using namespace gui_core_kernel_1_globals;
using namespace std; using namespace std;
init_gui_core(); if (OpenClipboard(globals().helper_window))
if (OpenClipboard(helper_window))
{ {
EmptyClipboard(); EmptyClipboard();
auto_mutex M(window_table.get_mutex()); auto_mutex M(globals().window_table.get_mutex());
const unsigned long newlines = count(str.begin(),str.end(),L'\n'); const unsigned long newlines = count(str.begin(),str.end(),L'\n');
...@@ -2075,10 +2145,8 @@ namespace dlib ...@@ -2075,10 +2145,8 @@ namespace dlib
using namespace gui_core_kernel_1_globals; using namespace gui_core_kernel_1_globals;
using namespace std; using namespace std;
init_gui_core(); auto_mutex M(globals().window_table.get_mutex());
if (OpenClipboard(globals().helper_window))
auto_mutex M(window_table.get_mutex());
if (OpenClipboard(helper_window))
{ {
HANDLE data = GetClipboardData(CF_UNICODETEXT); HANDLE data = GetClipboardData(CF_UNICODETEXT);
......
dlib/gui_widgets/fonts.cpp
View file @ 5d29b7b3
...@@ -16,9 +16,6 @@ ...@@ -16,9 +16,6 @@
namespace dlib namespace dlib
{ {
scoped_ptr<default_font> default_font::f;
mutex default_font::m;
// ---------------------------------------------------------------------------------------- // ----------------------------------------------------------------------------------------
const std::string get_decoded_string_with_default_font_data() const std::string get_decoded_string_with_default_font_data()
......
dlib/gui_widgets/fonts.h
View file @ 5d29b7b3
...@@ -491,13 +491,14 @@ namespace dlib ...@@ -491,13 +491,14 @@ namespace dlib
default_font(default_font&); // copy constructor default_font(default_font&); // copy constructor
default_font& operator=(default_font&); // assignment operator default_font& operator=(default_font&); // assignment operator
static scoped_ptr<default_font> f;
static mutex m;
public: public:
static const font* get_font ( static const font* get_font (
) )
{ {
static mutex m;
static scoped_ptr<default_font> f;
auto_mutex M(m); auto_mutex M(m);
if (f.get() == 0) if (f.get() == 0)
f.reset(new default_font); f.reset(new default_font);
......
dlib/test/gui/main.cpp
View file @ 5d29b7b3
...@@ -771,13 +771,13 @@ private: ...@@ -771,13 +771,13 @@ private:
}; };
win w;
int main() int main()
{ {
try try
{ {
win w;
w.set_pos (100,200); w.set_pos (100,200);
w.set_title("test window"); w.set_title("test window");
w.show(); w.show();
......
dlib/unicode/unicode.cpp
View file @ 5d29b7b3
...@@ -15,7 +15,7 @@ namespace dlib ...@@ -15,7 +15,7 @@ namespace dlib
static const unichar SURROGATE_FIRST_TOP = 0xD800; static const unichar SURROGATE_FIRST_TOP = 0xD800;
static const unichar SURROGATE_SECOND_TOP = 0xDC00; static const unichar SURROGATE_SECOND_TOP = 0xDC00;
static const unichar SURROGATE_CLEARING_MASK = 0x03FF; static const unichar SURROGATE_CLEARING_MASK = 0x03FF;
static const unichar &SURROGATE_TOP = SURROGATE_FIRST_TOP; static const unichar SURROGATE_TOP = SURROGATE_FIRST_TOP;
static const unichar SURROGATE_END = 0xE000; static const unichar SURROGATE_END = 0xE000;
static const unichar SMP_TOP = 0x10000; static const unichar SMP_TOP = 0x10000;
static const int VALID_BITS = 10; static const int VALID_BITS = 10;
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment