/*
* Handle all mouse events. These are mouse enter, mouse exit, mouse
* motion, mouse position, button down, and button up. This also moves
* the cursor to the new mouse position and changes it shape if needed.
*/
void
MwHandleMouseStatus(MWCOORD newx, MWCOORD newy, int newbuttons)
{
int changebuttons; /* buttons that have changed */
MWKEYMOD modifiers; /* latest modifiers */
static int curbuttons;
GdGetModifierInfo(NULL, &modifiers); /* Read kbd modifiers */
/*
* First, if the mouse has moved, then position the cursor to the
* new location, which will send mouse enter, mouse exit, focus in,
* and focus out events if needed. Check here for mouse motion and
* mouse position events.
*/
if (newx != cursorx || newy != cursory) {
MwMoveCursor(newx, newy);
MwDeliverMouseEvent(newbuttons, 0, modifiers);
}
/*
* Next, generate a button up event if any buttons have been released.
*/
changebuttons = (curbuttons & ~newbuttons);
if (changebuttons)
MwDeliverMouseEvent(newbuttons, changebuttons, modifiers);
/*
* Finally, generate a button down event if any buttons have been
* pressed.
*/
changebuttons = (~curbuttons & newbuttons);
if (changebuttons)
MwDeliverMouseEvent(newbuttons, changebuttons, modifiers);
curbuttons = newbuttons;
}
/*
* Initialize the graphics and mouse devices at startup.
* Returns nonzero with a message printed if the initialization failed.
*/
int
MwInitialize(void)
{
HWND wp; /* root window */
PSD psd;
WNDCLASS wc;
int fd;
static MWCURSOR arrow = { /* default arrow cursor*/
16, 16,
0, 0,
RGB(255, 255, 255), RGB(0, 0, 0),
{ 0xe000, 0x9800, 0x8600, 0x4180,
0x4060, 0x2018, 0x2004, 0x107c,
0x1020, 0x0910, 0x0988, 0x0544,
0x0522, 0x0211, 0x000a, 0x0004 },
{ 0xe000, 0xf800, 0xfe00, 0x7f80,
0x7fe0, 0x3ff8, 0x3ffc, 0x1ffc,
0x1fe0, 0x0ff0, 0x0ff8, 0x077c,
0x073e, 0x021f, 0x000e, 0x0004 }
};
extern MWLISTHEAD mwClassHead;
#if (UNIX | DOS_DJGPP) && !_MINIX
for (fd = 0; fd < FD_SETSIZE; fd++) {
userregfd[fd].read = NULL;
userregfd[fd].write = NULL;
userregfd[fd].except = NULL;
userregfd[fd].next = -1;
}
userregfd_head = -1;
#endif
/* catch terminate signal to restore tty state*/
signal(SIGTERM, (void *)MwTerminate);
startTicks = GetTickCount();
if ((keyb_fd = GdOpenKeyboard()) == -1) {
EPRINTF("Cannot initialise keyboard\n");
return -1;
}
if ((psd = GdOpenScreen()) == NULL) {
EPRINTF("Cannot initialise screen\n");
GdCloseKeyboard();
return -1;
}
if ((mouse_fd = GdOpenMouse()) == -1) {
EPRINTF("Cannot initialise mouse\n");
GdCloseScreen(psd);
GdCloseKeyboard();
return -1;
}
#if ANIMATEPALETTE
setfadelevel(psd, 0);
#endif
/*
* Initialize the root window.
*/
wc.style = CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW;
wc.lpfnWndProc = (WNDPROC)DefWindowProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = 0;
wc.hIcon = 0; /*LoadIcon(GetHInstance(), MAKEINTRESOURCE( 1));*/
wc.hCursor = 0; /*LoadCursor(NULL, IDC_ARROW);*/
wc.hbrBackground = CreateSolidBrush(GetSysColor(COLOR_BACKGROUND));
wc.lpszMenuName = NULL;
wc.lpszClassName = "DeskTop";
RegisterClass( &wc);
wp = GdItemNew(struct hwnd);
if (!wp) {
EPRINTF("No memory for root window\n");
GdCloseMouse();
GdCloseScreen(psd);
GdCloseKeyboard();
return -1;
}
/* remove the WS_CAPTION to have bare desktop window*/
/*wp->style = WS_CLIPCHILDREN | WS_CAPTION | WS_VISIBLE;*/
wp->style = WS_CLIPCHILDREN | WS_VISIBLE;
wp->exstyle = 0;
wp->pClass = (PWNDCLASS)mwClassHead.head;
wp->parent = NULL;
wp->children = NULL;
wp->siblings = NULL;
wp->next = NULL;
SetRect(&wp->winrect, 0, 0, psd->xvirtres, psd->yvirtres);
MwCalcClientRect(wp);
wp->cursor = NULL;
wp->unmapcount = 0;
wp->id = 0;
strcpy(wp->szTitle, "Microwindows");
wp->gotPaintMsg = PAINT_PAINTED;
#if UPDATEREGIONS
wp->update = GdAllocRegion();
#endif
listwp = wp;
rootwp = wp;
focuswp = wp;
mousewp = wp;
/* schedule desktop window paint*/
InvalidateRect(rootwp, NULL, TRUE);
#if VTSWITCH
MwInitVt();
/* Check for VT change every 50 ms: */
GdAddTimer(50, CheckVtChange, NULL);
#endif
/*
* Initialize and position the default cursor.
*/
curcursor = NULL;
cursorx = -1;
cursory = -1;
GdShowCursor(psd);
MwMoveCursor(psd->xvirtres / 2, psd->yvirtres / 2);
MwSetCursor(rootwp, &arrow);
/*
* Finally tell the mouse driver some things.
*/
GdRestrictMouse(0, 0, psd->xvirtres - 1, psd->yvirtres - 1);
GdMoveMouse(psd->xvirtres / 2, psd->yvirtres / 2);
return 0;
}
