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fltk/src/Fl_win32.cxx
Michael R Sweet a1236f0900 One more keyboard fix for good measure - still need to address "stuck" 
meta key in keyboard demo, but that is because we don't get the "keyup"
event because Windows takes our focus away...


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.0@1447 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2001-04-27 15:43:38 +00:00

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//
// "$Id: Fl_win32.cxx,v 1.33.2.37 2001/04/27 15:43:38 easysw Exp $"
//
// WIN32-specific code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2001 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library 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.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org".
//
// This file contains win32-specific code for fltk which is always linked
// in. Search other files for "WIN32" or filenames ending in _win32.C
// for other system-specific code.
#include <config.h>
#include <FL/Fl.H>
#include <FL/win32.H>
#include <FL/Fl_Window.H>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <time.h>
#include <winsock.h>
#include <ctype.h>
//
// USE_ASYNC_SELECT - define it if you have WSAAsyncSelect()...
//
// MRS - this currently doesn't appear to work anymore; needs to be fixed!
//#define USE_ASYNC_SELECT
//
// WM_SYNCPAINT is an "undocumented" message, which is finally defined in
// VC++ 6.0.
//
#ifndef WM_SYNCPAINT
# define WM_SYNCPAINT 0x0088
#endif /* !WM_SYNCPAINT */
#ifndef WM_MOUSELEAVE
# define WM_MOUSELEAVE 0x02a3
#endif
//
// WM_FLSELECT is the user-defined message that we get when one of
// the sockets has pending data, etc.
//
#define WM_FLSELECT (WM_USER+0x0400)
////////////////////////////////////////////////////////////////
// interface to poll/select call:
// fd's are only implemented for sockets. Microsoft Windows does not
// have a unified IO system, so it doesn't support select() on files,
// devices, or pipes...
//
// Microsoft provides the Berkeley select() call and an asynchronous
// select function that sends a WIN32 message when the select condition
// exists...
#ifndef USE_ASYNC_SELECT
static fd_set fdsets[3];
#endif // !USE_ASYNC_SELECT
#define POLLIN 1
#define POLLOUT 4
#define POLLERR 8
static int nfds = 0;
static int fd_array_size = 0;
static struct FD {
int fd;
short events;
void (*cb)(int, void*);
void* arg;
} *fd = 0;
void Fl::add_fd(int n, int events, void (*cb)(int, void*), void *v) {
remove_fd(n,events);
int i = nfds++;
if (i >= fd_array_size) {
fd_array_size = 2*fd_array_size+1;
fd = (FD*)realloc(fd, fd_array_size*sizeof(FD));
}
fd[i].fd = n;
fd[i].events = events;
fd[i].cb = cb;
fd[i].arg = v;
#ifdef USE_ASYNC_SELECT
int mask = 0;
if (events & POLLIN) mask |= FD_READ;
if (events & POLLOUT) mask |= FD_WRITE;
if (events & POLLERR) mask |= FD_CLOSE;
WSAAsyncSelect(n, fl_window, WM_FLSELECT, mask);
#else
if (events & POLLIN) FD_SET(n, &fdsets[0]);
if (events & POLLOUT) FD_SET(n, &fdsets[1]);
if (events & POLLERR) FD_SET(n, &fdsets[2]);
#endif // USE_ASYNC_SELECT
}
void Fl::add_fd(int fd, void (*cb)(int, void*), void* v) {
Fl::add_fd(fd, POLLIN, cb, v);
}
void Fl::remove_fd(int n, int events) {
int i,j;
for (i=j=0; i<nfds; i++) {
if (fd[i].fd == n) {
int e = fd[i].events & ~events;
if (!e) continue; // if no events left, delete this fd
fd[i].events = e;
}
// move it down in the array if necessary:
if (j<i) {
fd[j]=fd[i];
}
j++;
}
nfds = j;
#ifdef USE_ASYNC_SELECT
WSAAsyncSelect(n, 0, 0, 0);
#else
if (events & POLLIN) FD_CLR(unsigned(n), &fdsets[0]);
if (events & POLLOUT) FD_CLR(unsigned(n), &fdsets[1]);
if (events & POLLERR) FD_CLR(unsigned(n), &fdsets[2]);
#endif // USE_ASYNC_SELECT
}
void Fl::remove_fd(int n) {
remove_fd(n, -1);
}
MSG fl_msg;
// This is never called with time_to_wait < 0.0.
// It *should* return negative on error, 0 if nothing happens before
// timeout, and >0 if any callbacks were done. This version only
// returns zero if nothing happens during a 0.0 timeout, otherwise
// it returns 1.
int fl_wait(double time_to_wait) {
int have_message = 0;
int timerid;
#ifndef USE_ASYNC_SELECT
if (nfds) {
// For WIN32 we need to poll for socket input FIRST, since
// the event queue is not something we can select() on...
timeval t;
t.tv_sec = 0;
t.tv_usec = 0;
fd_set fdt[3];
fdt[0] = fdsets[0];
fdt[1] = fdsets[1];
fdt[2] = fdsets[2];
if (::select(0,&fdt[0],&fdt[1],&fdt[2],&t)) {
// We got something - do the callback!
for (int i = 0; i < nfds; i ++) {
int f = fd[i].fd;
short revents = 0;
if (FD_ISSET(f,&fdt[0])) revents |= POLLIN;
if (FD_ISSET(f,&fdt[1])) revents |= POLLOUT;
if (FD_ISSET(f,&fdt[2])) revents |= POLLERR;
if (fd[i].events & revents) fd[i].cb(f, fd[i].arg);
}
time_to_wait = 0.0; // just peek for any messages
} else {
// we need to check them periodically, so set a short timeout:
if (time_to_wait > .001) time_to_wait = .001;
}
}
#endif // USE_ASYNC_SELECT
if (time_to_wait < 2147483.648) {
// Perform the requested timeout...
have_message = PeekMessage(&fl_msg, NULL, 0, 0, PM_REMOVE);
if (!have_message) {
int t = (int)(time_to_wait * 1000.0 + .5);
if (t <= 0) return 0; // too short to measure
timerid = SetTimer(NULL, 0, t, NULL);
have_message = GetMessage(&fl_msg, NULL, 0, 0);
KillTimer(NULL, timerid);
}
} else {
have_message = GetMessage(&fl_msg, NULL, 0, 0);
}
// Execute the message we got, and all other pending messages:
while (have_message) {
#ifdef USE_ASYNC_SELECT
if (fl_msg.message == WM_FLSELECT) {
// Got notification for socket
for (int i = 0; i < nfds; i ++)
if (fd[i].fd == (int)fl_msg.wParam) {
(fd[i].cb)(fd[i].fd, fd[i].arg);
break;
}
// looks like it is best to do the dispatch-message anyway:
}
#endif
TranslateMessage(&fl_msg);
DispatchMessage(&fl_msg);
have_message = PeekMessage(&fl_msg, NULL, 0, 0, PM_REMOVE);
}
// This should return 0 if only timer events were handled:
return 1;
}
// fl_ready() is just like fl_wait(0.0) except no callbacks are done:
int fl_ready() {
if (PeekMessage(&fl_msg, NULL, 0, 0, PM_NOREMOVE)) return 1;
#ifdef USE_ASYNC_SELECT
return 0;
#else
timeval t;
t.tv_sec = 0;
t.tv_usec = 0;
fd_set fdt[3];
fdt[0] = fdsets[0];
fdt[1] = fdsets[1];
fdt[2] = fdsets[2];
return ::select(0,&fdt[0],&fdt[1],&fdt[2],&t);
#endif // USE_ASYNC_SELECT
}
////////////////////////////////////////////////////////////////
int Fl::x()
{
RECT r;
SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
return r.left;
}
int Fl::y()
{
RECT r;
SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
return r.top;
}
int Fl::h()
{
RECT r;
SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
return r.bottom - r.top;
}
int Fl::w()
{
RECT r;
SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
return r.right - r.left;
}
void Fl::get_mouse(int &x, int &y) {
POINT p;
GetCursorPos(&p);
x = p.x;
y = p.y;
}
////////////////////////////////////////////////////////////////
HWND fl_capture;
static int mouse_event(Fl_Window *window, int what, int button,
WPARAM wParam, LPARAM lParam)
{
static int px, py, pmx, pmy;
POINT pt;
Fl::e_x = pt.x = (signed short)LOWORD(lParam);
Fl::e_y = pt.y = (signed short)HIWORD(lParam);
ClientToScreen(fl_xid(window), &pt);
Fl::e_x_root = pt.x;
Fl::e_y_root = pt.y;
while (window->parent()) {
Fl::e_x += window->x();
Fl::e_y += window->y();
window = window->window();
}
ulong state = Fl::e_state & 0xff0000; // keep shift key states
#if 0
// mouse event reports some shift flags, perhaps save them?
if (wParam & MK_SHIFT) state |= FL_SHIFT;
if (wParam & MK_CONTROL) state |= FL_CTRL;
#endif
if (wParam & MK_LBUTTON) state |= FL_BUTTON1;
if (wParam & MK_MBUTTON) state |= FL_BUTTON2;
if (wParam & MK_RBUTTON) state |= FL_BUTTON3;
Fl::e_state = state;
switch (what) {
case 1: // double-click
if (Fl::e_is_click) {Fl::e_clicks++; goto J1;}
case 0: // single-click
Fl::e_clicks = 0;
J1:
if (!fl_capture) SetCapture(fl_xid(window));
Fl::e_keysym = FL_Button + button;
Fl::e_is_click = 1;
px = pmx = Fl::e_x_root; py = pmy = Fl::e_y_root;
return Fl::handle(FL_PUSH,window);
case 2: // release:
if (!fl_capture) ReleaseCapture();
Fl::e_keysym = FL_Button + button;
return Fl::handle(FL_RELEASE,window);
case 3: // move:
default: // avoid compiler warning
// MSWindows produces extra events even if mouse does not move, ignore em:
if (Fl::e_x_root == pmx && Fl::e_y_root == pmy) return 1;
pmx = Fl::e_x_root; pmy = Fl::e_y_root;
if (abs(Fl::e_x_root-px)>5 || abs(Fl::e_y_root-py)>5) Fl::e_is_click = 0;
return Fl::handle(FL_MOVE,window);
}
}
// convert a MSWindows VK_x to an Fltk (X) Keysym:
// See also the inverse converter in Fl_get_key_win32.C
// This table is in numeric order by VK:
static const struct {unsigned short vk, fltk, extended;} vktab[] = {
{VK_BACK, FL_BackSpace},
{VK_TAB, FL_Tab},
{VK_CLEAR, FL_KP+'5', 0xff0b/*XK_Clear*/},
{VK_RETURN, FL_Enter, FL_KP_Enter},
{VK_SHIFT, FL_Shift_L, FL_Shift_R},
{VK_CONTROL, FL_Control_L, FL_Control_R},
{VK_MENU, FL_Alt_L, FL_Alt_R},
{VK_PAUSE, FL_Pause},
{VK_CAPITAL, FL_Caps_Lock},
{VK_ESCAPE, FL_Escape},
{VK_SPACE, ' '},
{VK_PRIOR, FL_KP+'9', FL_Page_Up},
{VK_NEXT, FL_KP+'3', FL_Page_Down},
{VK_END, FL_KP+'1', FL_End},
{VK_HOME, FL_KP+'7', FL_Home},
{VK_LEFT, FL_KP+'4', FL_Left},
{VK_UP, FL_KP+'8', FL_Up},
{VK_RIGHT, FL_KP+'6', FL_Right},
{VK_DOWN, FL_KP+'2', FL_Down},
{VK_SNAPSHOT, FL_Print}, // does not work on NT
{VK_INSERT, FL_KP+'0', FL_Insert},
{VK_DELETE, FL_KP+'.', FL_Delete},
{VK_LWIN, FL_Meta_L},
{VK_RWIN, FL_Meta_R},
{VK_APPS, FL_Menu},
{VK_MULTIPLY, FL_KP+'*'},
{VK_ADD, FL_KP+'+'},
{VK_SUBTRACT, FL_KP+'-'},
{VK_DECIMAL, FL_KP+'.'},
{VK_DIVIDE, FL_KP+'/'},
{VK_NUMLOCK, FL_Num_Lock},
{VK_SCROLL, FL_Scroll_Lock},
{0xba, ';'},
{0xbb, '='},
{0xbc, ','},
{0xbd, '-'},
{0xbe, '.'},
{0xbf, '/'},
{0xc0, '`'},
{0xdb, '['},
{0xdc, '\\'},
{0xdd, ']'},
{0xde, '\''}
};
static int ms2fltk(int vk, int extended) {
static unsigned short vklut[256];
static unsigned short extendedlut[256];
if (!vklut[1]) { // init the table
unsigned int i;
for (i = 0; i < 256; i++) vklut[i] = tolower(i);
for (i=VK_F1; i<=VK_F16; i++) vklut[i] = i+(FL_F-(VK_F1-1));
for (i=VK_NUMPAD0; i<=VK_NUMPAD9; i++) vklut[i] = i+(FL_KP+'0'-VK_NUMPAD0);
for (i = 0; i < sizeof(vktab)/sizeof(*vktab); i++) {
vklut[vktab[i].vk] = vktab[i].fltk;
extendedlut[vktab[i].vk] = vktab[i].extended;
}
for (i = 0; i < 256; i++) if (!extendedlut[i]) extendedlut[i] = vklut[i];
}
return extended ? extendedlut[vk] : vklut[vk];
}
#if USE_COLORMAP
extern HPALETTE fl_select_palette(void); // in fl_color_win32.C
#endif
static Fl_Window* resize_bug_fix;
static LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
// Matt: When dragging a full window, MSWindows on 'slow'
// machines can lose track of the window refresh area. It sends some kind
// of panic message to the desktop that in turn sends this message on to
// all applications.
static int cnt=0;
if (uMsg == WM_SYNCPAINT) {
MSG msg;
if ( PeekMessage( &msg, hWnd, WM_PAINT, WM_PAINT, false )==0 )
InvalidateRect(hWnd,0,FALSE);
if (cnt) {
InvalidateRect(fl_window,0,FALSE);
cnt = 0;
} else cnt = 1;
} else if (uMsg == WM_PAINT) cnt = 0;
fl_msg.message = uMsg;
Fl_Window *window = fl_find(hWnd);
if (window) switch (uMsg) {
case WM_QUIT: // this should not happen?
Fl::fatal("WM_QUIT message");
case WM_CLOSE: // user clicked close box
Fl::handle(FL_CLOSE, window);
return 0;
case WM_PAINT: {
Fl_X *i = Fl_X::i(window);
i->wait_for_expose = 0;
// We need to merge this damage into fltk's damage. I do this in
// reverse, telling Win32 about fltk's damage and then reading back
// the new accumulated region.
if (window->damage()) {
// If there is no region the entire window is damaged
if (i->region) {
InvalidateRgn(hWnd,i->region,FALSE);
GetUpdateRgn(hWnd,i->region,0);
}
} else {
if (!i->region) i->region = CreateRectRgn(0,0,0,0);
GetUpdateRgn(hWnd,i->region,0);
}
window->clear_damage(window->damage()|FL_DAMAGE_EXPOSE);
// These next two statements should not be here, so that all update
// is deferred until Fl::flush() is called during idle. However Win32
// apparently is very unhappy if we don't obey it and draw right now.
// Very annoying!
i->flush();
window->clear_damage();
// This convinces MSWindows we have painted whatever they wanted
// us to paint, and stops it from sending WM_PAINT messages:
ValidateRgn(hWnd,NULL);
} break;
case WM_LBUTTONDOWN: mouse_event(window, 0, 1, wParam, lParam); return 0;
case WM_LBUTTONDBLCLK:mouse_event(window, 1, 1, wParam, lParam); return 0;
case WM_LBUTTONUP: mouse_event(window, 2, 1, wParam, lParam); return 0;
case WM_MBUTTONDOWN: mouse_event(window, 0, 2, wParam, lParam); return 0;
case WM_MBUTTONDBLCLK:mouse_event(window, 1, 2, wParam, lParam); return 0;
case WM_MBUTTONUP: mouse_event(window, 2, 2, wParam, lParam); return 0;
case WM_RBUTTONDOWN: mouse_event(window, 0, 3, wParam, lParam); return 0;
case WM_RBUTTONDBLCLK:mouse_event(window, 1, 3, wParam, lParam); return 0;
case WM_RBUTTONUP: mouse_event(window, 2, 3, wParam, lParam); return 0;
case WM_MOUSEMOVE: mouse_event(window, 3, 0, wParam, lParam); return 0;
#ifdef WM_MOUSELEAVE
case WM_MOUSELEAVE:
Fl::handle(FL_LEAVE, window);
break;
#endif /* WM_MOUSELEAVE */
case WM_SETFOCUS:
Fl::handle(FL_FOCUS, window);
break;
case WM_KILLFOCUS:
Fl::handle(FL_UNFOCUS, window);
Fl::flush(); // it never returns to main loop when deactivated...
break;
case WM_SHOWWINDOW:
if (!window->parent()) {
Fl::handle(wParam ? FL_SHOW : FL_HIDE, window);
}
break;
case WM_ACTIVATEAPP:
// From eric@vfx.sel.sony.com, we should process WM_ACTIVATEAPP
// messages to restore the correct state of the shift/ctrl/alt/lock
// keys... Added control, shift, alt, and meta keys, and changed
// to use GetAsyncKeyState and do it when wParam is 1
// (that means we have focus...)
if (wParam)
{
ulong state = 0;
if (GetAsyncKeyState(VK_CAPITAL)) state |= FL_CAPS_LOCK;
if (GetAsyncKeyState(VK_NUMLOCK)) state |= FL_NUM_LOCK;
if (GetAsyncKeyState(VK_SCROLL)) state |= FL_SCROLL_LOCK;
if (GetAsyncKeyState(VK_CONTROL)&~1) state |= FL_CTRL;
if (GetAsyncKeyState(VK_SHIFT)&~1) state |= FL_SHIFT;
if (GetAsyncKeyState(VK_MENU)) state |= FL_ALT;
if ((GetAsyncKeyState(VK_LWIN)|GetAsyncKeyState(VK_RWIN))&~1) state |= FL_META;
Fl::e_state = state;
return 0;
}
break;
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
case WM_KEYUP:
case WM_SYSKEYUP:
// save the keysym until we figure out the characters:
Fl::e_keysym = ms2fltk(wParam,lParam&(1<<24));
// See if TranslateMessage turned it into a WM_*CHAR message:
if (PeekMessage(&fl_msg, hWnd, WM_CHAR, WM_SYSDEADCHAR, 1)) {
uMsg = fl_msg.message;
wParam = fl_msg.wParam;
lParam = fl_msg.lParam;
}
case WM_DEADCHAR:
case WM_SYSDEADCHAR:
case WM_CHAR:
case WM_SYSCHAR: {
ulong state = Fl::e_state & 0xff000000; // keep the mouse button state
// if GetKeyState is expensive we might want to comment some of these out:
if (GetKeyState(VK_SHIFT)&~1) state |= FL_SHIFT;
if (GetKeyState(VK_CAPITAL)) state |= FL_CAPS_LOCK;
if (GetKeyState(VK_CONTROL)&~1) state |= FL_CTRL;
// Alt gets reported for the Alt-GR switch on foreign keyboards.
// so we need to check the event as well to get it right:
if ((lParam&(1<<29)) //same as GetKeyState(VK_MENU)
&& uMsg != WM_CHAR) state |= FL_ALT;
if (GetKeyState(VK_NUMLOCK)) state |= FL_NUM_LOCK;
if ((GetKeyState(VK_LWIN)|GetKeyState(VK_RWIN))&~1) {
// WIN32 bug? GetKeyState returns garbage if the user hit the
// meta key to pop up start menu. Sigh.
if ((GetAsyncKeyState(VK_LWIN)|GetAsyncKeyState(VK_RWIN))&~1)
state |= FL_META;
}
if (GetKeyState(VK_SCROLL)) state |= FL_SCROLL_LOCK;
Fl::e_state = state;
if (lParam & (1<<31)) goto DEFAULT; // ignore up events after fixing shift
static char buffer[2];
if (uMsg == WM_CHAR || uMsg == WM_SYSCHAR) {
buffer[0] = char(wParam);
Fl::e_length = 1;
} else if (Fl::e_keysym >= FL_KP && Fl::e_keysym <= FL_KP_Last) {
buffer[0] = Fl::e_keysym-FL_KP;
Fl::e_length = 1;
} else {
buffer[0] = 0;
Fl::e_length = 0;
}
Fl::e_text = buffer;
// for (int i = lParam&0xff; i--;)
while (window->parent()) window = window->window();
if (Fl::handle(FL_KEYBOARD,window)) return 0;
break;}
case WM_GETMINMAXINFO:
Fl_X::i(window)->set_minmax((LPMINMAXINFO)lParam);
break;
case WM_SIZE:
if (!window->parent()) {
if (wParam == SIZE_MINIMIZED || wParam == SIZE_MAXHIDE) {
Fl::handle(FL_HIDE, window);
} else {
Fl::handle(FL_SHOW, window);
resize_bug_fix = window;
window->size(LOWORD(lParam), HIWORD(lParam));
}
}
break;
case WM_MOVE:
resize_bug_fix = window;
window->position(LOWORD(lParam), HIWORD(lParam));
break;
case WM_SETCURSOR:
if (LOWORD(lParam) == HTCLIENT) {
while (window->parent()) window = window->window();
SetCursor(Fl_X::i(window)->cursor);
return 0;
}
break;
#if USE_COLORMAP
case WM_QUERYNEWPALETTE :
fl_GetDC(hWnd);
if (fl_select_palette()) InvalidateRect(hWnd, NULL, FALSE);
break;
case WM_PALETTECHANGED:
fl_GetDC(hWnd);
if ((HWND)wParam != hWnd && fl_select_palette()) UpdateColors(fl_gc);
break;
case WM_CREATE :
fl_GetDC(hWnd);
fl_select_palette();
break;
#endif
default:
DEFAULT:
if (Fl::handle(0,0)) return 0;
break;
}
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
////////////////////////////////////////////////////////////////
// This function gets the dimensions of the top/left borders and
// the title bar, if there is one, based on the FL_BORDER, FL_MODAL
// and FL_NONMODAL flags, and on the window's size range.
// It returns the following values:
//
// value | border | title bar
// 0 | none | no
// 1 | fix | yes
// 2 | size | yes
int Fl_X::fake_X_wm(const Fl_Window* w,int &X,int &Y, int &bt,int &bx, int &by) {
int W, H, xoff, yoff, dx, dy;
int ret = bx = by = bt = 0;
if (w->border() && !w->parent()) {
if (w->maxw != w->minw || w->maxh != w->minh) {
ret = 2;
bx = GetSystemMetrics(SM_CXSIZEFRAME);
by = GetSystemMetrics(SM_CYSIZEFRAME);
} else {
ret = 1;
bx = GetSystemMetrics(SM_CXFIXEDFRAME);
by = GetSystemMetrics(SM_CYFIXEDFRAME);
}
bt = GetSystemMetrics(SM_CYCAPTION);
}
//The coordinates of the whole window, including non-client area
xoff = bx;
yoff = by + bt;
dx = 2*bx;
dy = 2*by + bt;
X = w->x()-xoff;
Y = w->y()-yoff;
W = w->w()+dx;
H = w->h()+dy;
//Proceed to positioning the window fully inside the screen, if possible
//Make border's lower right corner visible
if (Fl::w() < X+W) X = Fl::w() - W;
if (Fl::h() < Y+H) Y = Fl::h() - H;
//Make border's upper left corner visible
if (X<0) X = 0;
if (Y<0) Y = 0;
//Make client area's lower right corner visible
if (Fl::w() < X+dx+ w->w()) X = Fl::w() - w->w() - dx;
if (Fl::h() < Y+dy+ w->h()) Y = Fl::h() - w->h() - dy;
//Make client area's upper left corner visible
if (X+xoff < 0) X = -xoff;
if (Y+yoff < 0) Y = -yoff;
//Return the client area's top left corner in (X,Y)
X+=xoff;
Y+=yoff;
return ret;
}
////////////////////////////////////////////////////////////////
void Fl_Window::resize(int X,int Y,int W,int H) {
UINT flags = SWP_NOSENDCHANGING | SWP_NOZORDER;
int is_a_resize = (W != w() || H != h());
int resize_from_program = (this != resize_bug_fix);
if (!resize_from_program) resize_bug_fix = 0;
if (X != x() || Y != y()) set_flag(FL_FORCE_POSITION);
else {if (!is_a_resize) return; flags |= SWP_NOMOVE;}
if (is_a_resize) {
Fl_Group::resize(X,Y,W,H);
if (shown()) {redraw(); i->wait_for_expose = 1;}
} else {
x(X); y(Y);
flags |= SWP_NOSIZE;
}
if (resize_from_program && shown()) {
int dummy, bt, bx, by;
//Ignore window managing when resizing, so that windows (and more
//specifically menus) can be moved offscreen.
if (Fl_X::fake_X_wm(this, dummy, dummy, bt, bx, by)) {
X -= bx;
Y -= by+bt;
W += 2*bx;
H += 2*by+bt;
}
SetWindowPos(i->xid, 0, X, Y, W, H, flags);
}
}
////////////////////////////////////////////////////////////////
void fl_fix_focus(); // in Fl.C
char fl_show_iconic; // hack for Fl_Window::iconic()
// int fl_background_pixel = -1; // color to use for background
HCURSOR fl_default_cursor;
int fl_disable_transient_for; // secret method of removing TRANSIENT_FOR
Fl_X* Fl_X::make(Fl_Window* w) {
Fl_Group::current(0); // get rid of very common user bug: forgot end()
const char* class_name = /*w->xclass();
if (!class_name) class_name =*/ "FLTK"; // create a "FLTK" WNDCLASS
WNDCLASSEX wc;
// Documentation states a device context consumes about 800 bytes
// of memory... so who cares? If 800 bytes per window is what it
// takes to speed things up, I'm game.
//wc.style = CS_HREDRAW | CS_VREDRAW | CS_CLASSDC | CS_DBLCLKS;
wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS;
wc.lpfnWndProc = (WNDPROC)WndProc;
wc.cbClsExtra = wc.cbWndExtra = 0;
wc.hInstance = fl_display;
if (!w->icon())
w->icon((void *)LoadIcon(NULL, IDI_APPLICATION));
wc.hIcon = wc.hIconSm = (HICON)w->icon();
wc.hCursor = fl_default_cursor = LoadCursor(NULL, IDC_ARROW);
//uchar r,g,b; Fl::get_color(FL_GRAY,r,g,b);
//wc.hbrBackground = (HBRUSH)CreateSolidBrush(RGB(r,g,b));
wc.hbrBackground = NULL;
wc.lpszMenuName = NULL;
wc.lpszClassName = class_name;
wc.cbSize = sizeof(WNDCLASSEX);
RegisterClassEx(&wc);
HWND parent;
DWORD style = WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
DWORD styleEx = WS_EX_LEFT;
int xp = w->x();
int yp = w->y();
int wp = w->w();
int hp = w->h();
int showit = 1;
if (w->parent()) {
style |= WS_CHILD;
styleEx |= WS_EX_WINDOWEDGE | WS_EX_CONTROLPARENT;
parent = fl_xid(w->window());
} else {
if (!w->size_range_set) {
if (w->resizable()) {
Fl_Widget *o = w->resizable();
int minw = o->w(); if (minw > 100) minw = 100;
int minh = o->h(); if (minh > 100) minh = 100;
w->size_range(w->w() - o->w() + minw, w->h() - o->h() + minh, 0, 0);
} else {
w->size_range(w->w(), w->h(), w->w(), w->h());
}
}
styleEx |= WS_EX_WINDOWEDGE | WS_EX_CONTROLPARENT;
int xwm = xp , ywm = yp , bt, bx, by;
switch (fake_X_wm(w, xwm, ywm, bt, bx, by)) {
// No border (user for menus)
case 0: style |= WS_POPUP; break;
// Thin border and title bar
case 1: style |= WS_DLGFRAME | WS_CAPTION; break;
// Thick, resizable border and title bar, with maximize button
case 2: style |= WS_THICKFRAME | WS_MAXIMIZEBOX | WS_CAPTION ; break;
}
if (by+bt) {
if (!w->modal()) style |= WS_SYSMENU | WS_MINIMIZEBOX;
wp += 2*bx;
hp += 2*by+bt;
}
if (!(w->flags() & Fl_Window::FL_FORCE_POSITION)) {
xp = yp = CW_USEDEFAULT;
} else {
if (!Fl::grab()) {
xp = xwm; yp = ywm;
w->x(xp);w->y(yp);
}
xp -= bx;
yp -= by+bt;
}
parent = 0;
if (w->non_modal() && Fl_X::first && !fl_disable_transient_for) {
// find some other window to be "transient for":
Fl_Window* w = Fl_X::first->w;
while (w->parent()) w = w->window();
parent = fl_xid(w);
if (!w->visible()) showit = 0;
}
}
Fl_X* x = new Fl_X;
x->other_xid = 0;
x->setwindow(w);
x->region = 0;
x->private_dc = 0;
x->cursor = fl_default_cursor;
x->xid = CreateWindowEx(
styleEx,
class_name, w->label(), style,
xp, yp, wp, hp,
parent,
NULL, // menu
fl_display,
NULL // creation parameters
);
x->next = Fl_X::first;
Fl_X::first = x;
x->wait_for_expose = 1;
if (fl_show_iconic) {showit = 0; fl_show_iconic = 0;}
if (showit) {
w->set_visible();
w->handle(FL_SHOW); // get child windows to appear
w->redraw(); // force draw to happen
}
// If we've captured the mouse, we dont want do activate any
// other windows from the code, or we loose the capture.
ShowWindow(x->xid, !showit ? SW_SHOWMINNOACTIVE :
fl_capture? SW_SHOWNOACTIVATE : SW_SHOWNORMAL);
if (w->modal()) {Fl::modal_ = w; fl_fix_focus();}
return x;
}
////////////////////////////////////////////////////////////////
HINSTANCE fl_display = GetModuleHandle(NULL);
void Fl_Window::size_range_() {
size_range_set = 1;
}
void Fl_X::set_minmax(LPMINMAXINFO minmax)
{
int td, wd, hd, dummy;
fake_X_wm(w, dummy, dummy, td, wd, hd);
wd *= 2;
hd *= 2;
hd += td;
minmax->ptMinTrackSize.x = w->minw + wd;
minmax->ptMinTrackSize.y = w->minh + hd;
if (w->maxw) {
minmax->ptMaxTrackSize.x = w->maxw + wd;
minmax->ptMaxSize.x = w->maxw + wd;
}
if (w->maxh) {
minmax->ptMaxTrackSize.y = w->maxh + hd;
minmax->ptMaxSize.y = w->maxh + hd;
}
}
////////////////////////////////////////////////////////////////
#include <FL/filename.H> // need so FL_EXPORT filename_name works
// returns pointer to the filename, or null if name ends with '/'
const char *filename_name(const char *name) {
const char *p,*q;
q = name;
if (q[0] && q[1]==':') q += 2; // skip leading drive letter
for (p = q; *p; p++) if (*p == '/' || *p == '\\') q = p+1;
return q;
}
void Fl_Window::label(const char *name,const char *iname) {
Fl_Widget::label(name);
iconlabel_ = iname;
if (shown() && !parent()) {
if (!name) name = "";
SetWindowText(i->xid, name);
// if (!iname) iname = filename_name(name);
// should do something with iname here...
}
}
////////////////////////////////////////////////////////////////
// Implement the virtual functions for the base Fl_Window class:
// If the box is a filled rectangle, we can make the redisplay *look*
// faster by using X's background pixel erasing. We can make it
// actually *be* faster by drawing the frame only, this is done by
// setting fl_boxcheat, which is seen by code in fl_drawbox.C:
// For WIN32 it looks like all windows share a background color, so
// I use FL_GRAY for this and only do this cheat for windows that are
// that color.
// Actually it is totally disabled.
// Fl_Widget *fl_boxcheat;
//static inline int can_boxcheat(uchar b) {return (b==1 || (b&2) && b<=15);}
void Fl_Window::show() {
if (!shown()) {
// if (can_boxcheat(box())) fl_background_pixel = fl_xpixel(color());
Fl_X::make(this);
} else {
// Once again, we would lose the capture if we activated the window.
if (IsIconic(i->xid)) OpenIcon(i->xid);
if (!fl_capture) BringWindowToTop(i->xid);
//ShowWindow(i->xid,fl_capture?SW_SHOWNOACTIVATE:SW_RESTORE);
}
}
Fl_Window *Fl_Window::current_;
// the current context
HDC fl_gc = 0;
// the current window handle, initially set to -1 so we can correctly
// allocate fl_GetDC(0)
HWND fl_window = (HWND)-1;
// Here we ensure only one GetDC is ever in place.
HDC fl_GetDC(HWND w) {
if (fl_gc) {
if (w == fl_window) return fl_gc;
ReleaseDC(fl_window, fl_gc);
}
fl_gc = GetDC(w);
fl_window = w;
// calling GetDC seems to always reset these: (?)
SetTextAlign(fl_gc, TA_BASELINE|TA_LEFT);
SetBkMode(fl_gc, TRANSPARENT);
return fl_gc;
}
// make X drawing go into this window (called by subclass flush() impl.)
void Fl_Window::make_current() {
fl_GetDC(fl_xid(this));
#if USE_COLORMAP
// Windows maintains a hardware and software color palette; the
// SelectPalette() call updates the current soft->hard mapping
// for all drawing calls, so we must select it here before any
// code does any drawing...
fl_select_palette();
#endif // USE_COLORMAP
current_ = this;
fl_clip_region(0);
}
//
// End of "$Id: Fl_win32.cxx,v 1.33.2.37 2001/04/27 15:43:38 easysw Exp $".
//
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