/*
* Update keyboard status and issue events on it if necessary.
* This function doesn't block, but is normally only called when
* there is known to be some data waiting to be read from the keyboard.
*/
BOOL
MwCheckKeyboardEvent(void)
{
MWKEY mwkey; /* latest character */
MWKEYMOD modifiers; /* latest modifiers */
MWSCANCODE scancode;
int keystatus; /* latest keyboard status */
/* Read the latest keyboard status: */
keystatus = GdReadKeyboard(&mwkey, &modifiers, &scancode);
if(keystatus < 0) {
if(keystatus == -2) /* special case for ESC pressed*/
MwTerminate();
/*MwError(GR_ERROR_KEYBOARD_ERROR, 0);*/
return FALSE;
} else if(keystatus) { /* Deliver events as appropriate: */
switch (mwkey) {
case MWKEY_QUIT:
MwTerminate();
/* no return*/
case MWKEY_REDRAW:
MwRedrawScreen();
break;
case MWKEY_PRINT:
if (keystatus == 1)
GdCaptureScreen("screen.bmp");
break;
}
MwDeliverKeyboardEvent(mwkey, modifiers, scancode,
keystatus==1? TRUE: FALSE);
return TRUE;
}
return FALSE;
}
//
// Update keyboard status and issue events on it if necessary.
// This function doesn't block, but is normally only called when
// there is known to be some data waiting to be read from the keyboard.
//
BOOL GsCheckKeyboardEvent(void)
{
MWKEY ch; // latest character
MWKEYMOD modifiers; // latest modifiers
MWSCANCODE scancode; // latest modifiers
int keystatus; // latest keyboard status
// Read the latest keyboard status:
display_puts("key read\n");
keystatus = GdReadKeyboard(&ch, &modifiers, &scancode);
if(keystatus < 0) {
if(keystatus == -2) // special case for ESC pressed
GsTerminate();
display_puts("Kbd error\n");
return FALSE;
} else if(keystatus) { // Deliver events as appropriate:
byte2hex(modifiers,s);
display_puts("kbd '");
display_putc(ch);
display_puts("',");
display_puts(s);
display_puts("\n");
return TRUE;
}
return FALSE;
}
/*
* Update keyboard status and issue events on it if necessary.
* This function doesn't block, but is normally only called when
* there is known to be some data waiting to be read from the keyboard.
*/
void GsCheckKeyboardEvent(void)
{
unsigned char ch; /* latest character */
MODIFIER modifiers; /* latest modifiers */
int keystatus; /* latest keyboard status */
/* Read the latest keyboard status: */
keystatus = GdReadKeyboard(&ch, &modifiers);
if(keystatus < 0) {
if(keystatus == -2) /* special case for ESC pressed*/
GsTerminate();
GsError(GR_ERROR_KEYBOARD_ERROR, 0);
return;
} else if(keystatus) /* Deliver events as appropriate: */
GsDeliverKeyboardEvent(GR_EVENT_TYPE_KEY_DOWN, ch, modifiers);
}
/*
* Update keyboard status and issue events on it if necessary.
* This function doesn't block, but is only called when Poll() returns TRUE
* or MwSelect shows some data waiting to be read on the keyboard file descriptor.
*/
BOOL
MwCheckKeyboardEvent(void)
{
MWKEY mwkey; /* latest character */
MWKEYMOD modifiers; /* latest modifiers */
MWSCANCODE scancode;
int keystatus; /* latest keyboard status */
if (kbddev.Poll && (kbddev.Poll() == 0))
return FALSE;
/* Read the latest keyboard status*/
keystatus = GdReadKeyboard(&mwkey, &modifiers, &scancode);
if (keystatus <= 0)
{
if (keystatus == KBD_QUIT) /* special case for quit message*/
MwTerminate();
return FALSE; /* read failed or no new data*/
}
/* handle special keys*/
switch (mwkey)
{
case MWKEY_QUIT:
#if DEBUG
if (modifiers & MWKMOD_CTRL)
GdCaptureScreen(NULL, "screen.bmp");
else
#endif
MwTerminate();
break;
case MWKEY_REDRAW:
MwRedrawScreen();
break;
#if DEBUG
case MWKEY_PRINT:
if (keystatus == KBD_KEYPRESS)
GdCaptureScreen(NULL, "screen.bmp");
break;
#endif
}
/* Deliver keyboard events as appropriate*/
MwDeliverKeyboardEvent(mwkey, modifiers, scancode, keystatus == KBD_KEYPRESS? TRUE: FALSE);
return TRUE;
}
/*
* 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 GsHandleMouseStatus(GR_COORD newx, GR_COORD newy, BUTTON newbuttons)
{
BUTTON changebuttons; /* buttons that have changed */
unsigned char ch; /* latest character */
MODIFIER modifiers; /* latest modifiers */
GdReadKeyboard(&ch, &modifiers); /* Read the 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. Flush the device queue to make sure the
* new cursor location is quickly seen by the user.
*/
if ((newx != cursorx) || (newy != cursory)) {
GsMoveCursor(newx, newy);
GsFlush();
GsDeliverMotionEvent(GR_EVENT_TYPE_MOUSE_MOTION,
newbuttons, modifiers);
GsDeliverMotionEvent(GR_EVENT_TYPE_MOUSE_POSITION,
newbuttons, modifiers);
}
/*
* Next, generate a button up event if any buttons have been released.
*/
changebuttons = (curbuttons & ~newbuttons);
if (changebuttons) {
GsDeliverButtonEvent(GR_EVENT_TYPE_BUTTON_UP,
newbuttons, changebuttons, modifiers);
}
/*
* Finally, generate a button down event if any buttons have been
* pressed.
*/
changebuttons = (~curbuttons & newbuttons);
if (changebuttons) {
GsDeliverButtonEvent(GR_EVENT_TYPE_BUTTON_DOWN,
newbuttons, changebuttons, modifiers);
}
curbuttons = newbuttons;
}
/*
* Update keyboard status and issue events on it if necessary.
* This function doesn't block, but is normally only called when
* there is known to be some data waiting to be read from the keyboard.
*/
BOOL GsCheckKeyboardEvent(void)
{
unsigned char ch; /* latest character */
MODIFIER modifiers; /* latest modifiers */
int keystatus; /* latest keyboard status */
/* Read the latest keyboard status: */
keystatus = GdReadKeyboard(&ch, &modifiers);
if(keystatus < 0) {
if(keystatus == -2) /* special case for ESC pressed*/
GsTerminate();
printf("Kbd error\n");
return FALSE;
} else if(keystatus) { /* Deliver events as appropriate: */
printf("kbd '%c',%d\n", ch, modifiers);
return TRUE;
}
return FALSE;
}
/*
* Update keyboard status and issue events on it if necessary.
* This function doesn't block, but is normally only called when
* there is known to be some data waiting to be read from the keyboard.
*/
GR_BOOL GsCheckKeyboardEvent(void)
{
MWKEY mwkey; /* latest character */
MWKEYMOD modifiers; /* latest modifiers */
MWSCANCODE scancode;
int keystatus; /* latest keyboard status */
/* Read the latest keyboard status: */
keystatus = GdReadKeyboard(&mwkey, &modifiers, &scancode);
if(keystatus < 0) {
if(keystatus == -2) /* special case return code*/
GsTerminate();
GsError(GR_ERROR_KEYBOARD_ERROR, 0);
return FALSE;
} else if(keystatus) { /* Deliver events as appropriate: */
switch (mwkey) {
case MWKEY_QUIT:
GsTerminate();
/* no return*/
case MWKEY_REDRAW:
GsRedrawScreen();
break;
case MWKEY_PRINT:
if (keystatus == 1)
GdCaptureScreen("screen.bmp");
break;
}
GsDeliverKeyboardEvent(0,
(keystatus==1?
GR_EVENT_TYPE_KEY_DOWN: GR_EVENT_TYPE_KEY_UP),
mwkey, modifiers, scancode);
return TRUE;
}
return FALSE;
}
