FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

From Mathias Froelich, "have done an interface to change the mouse cursor in the X11 graphics

Browse Source 
window.
The win32 implementation is still in its original shape since I have no win32
implementation available.

I have chosen the enum approach for the first cut. That is benefitial since
the user does not need to track creation of mouse cursors for different
windows and displays in presence of multiple viewer windows.

The default set of available mouse shapes is the same set that was available
with glut. That set served many OpenGL applications well, so the hope is that
this is enough.

Even though, that implementation is still extensible:
I have digged out the way SDL defines new mouse cursors and added a still
documented out function prototype in the GraphicsWindow that can be used to
extend the current implemtation for arbitrary mouse shapes. That is not
implemented yet.

I hope that somebody with a win32 test system can catch up that implementation
on win32."
This commit is contained in:
Robert Osfield
2007-06-01 19:43:28 +00:00
parent 604bd9b6d7
commit 822868ca31
3 changed files with 139 additions and 42 deletions
Download Patch File Download Diff File Expand all files Collapse all files

126
src/osgViewer/GraphicsWindowX11.cpp
View File

@@ -384,28 +384,112 @@ void GraphicsWindowX11::setWindowRectangle(int x, int y, int width, int height)
usleep(100000);
}
void GraphicsWindowX11::useCursor(bool cursorOn)
void GraphicsWindowX11::setCursor(MouseCursor mouseCursor)
{
Cursor newCursor = getOrCreateCursor(mouseCursor);
if (newCursor == _currentCursor) return;
_currentCursor = newCursor;
if (!_window) return;
Display* display = getDisplayToUse();
if (!display) return;
XDefineCursor( display, _window, _currentCursor );
XFlush(display);
XSync(display, 0);
if (cursorOn)
{
_currentCursor = _defaultCursor;
}
else
{
_currentCursor = _nullCursor;
}
_traits->useCursor = (_currentCursor != getOrCreateCursor(NoCursor));
}
if (display && _window)
Cursor GraphicsWindowX11::getOrCreateCursor(MouseCursor mouseCursor)
{
std::map<MouseCursor,Cursor>::iterator i = _mouseCursorMap.find(mouseCursor);
if (i != _mouseCursorMap.end()) return i->second;
Display* display = getDisplayToUse();
if (!display) return None;
switch (mouseCursor) {
case NoCursor:
{
XDefineCursor( display, _window, _currentCursor );
// create an empty mouse cursor, note that it is safe to destroy the Pixmap just past cursor creation
// since the resource in the x server is reference counted.
char buff[2] = {0,0};
XColor ncol = {0,0,0,0,DoRed|DoGreen|DoBlue,0};
Pixmap pixmap = XCreateBitmapFromData( display, _parent, buff, 1, 1);
_mouseCursorMap[mouseCursor] = XCreatePixmapCursor( display, pixmap, pixmap, &ncol, &ncol, 0, 0 );
XFreePixmap(display, pixmap);
// Important to have the pixmap and the buffer still available when the request is sent to the server ...
XFlush(display);
XSync(display,0);
XSync(display, 0);
break;
}
case RightArrowCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_left_ptr );
break;
case LeftArrowCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_top_left_arrow );
break;
case InfoCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_hand1 );
break;
case DestroyCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_pirate );
break;
case HelpCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_question_arrow );
break;
case CycleCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_exchange );
break;
case SprayCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_spraycan );
break;
case WaitCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_watch );
break;
case TextCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_xterm );
break;
case CrosshairCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_crosshair );
break;
case UpDownCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_sb_v_double_arrow );
break;
case LeftRightCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_sb_h_double_arrow );
break;
case TopSideCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_top_side );
break;
case BottomSideCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_bottom_side );
break;
case LeftSideCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_left_side );
break;
case RightSideCursor:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_right_side );
break;
case TopLeftCorner:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_top_left_corner );
break;
case TopRightCorner:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_top_right_corner );
break;
case BottomRightCorner:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_bottom_right_corner );
break;
case BottomLeftCorner:
_mouseCursorMap[mouseCursor] = XCreateFontCursor( display, XC_bottom_left_corner );
break;
_traits->useCursor = cursorOn;
case InheritCursor:
default:
_mouseCursorMap[mouseCursor] = None;
break;
};
return _mouseCursorMap[mouseCursor];
}
void GraphicsWindowX11::init()
@@ -541,20 +625,6 @@ void GraphicsWindowX11::init()
setWindowDecoration(_traits->windowDecoration);
// Create default Cursor
_defaultCursor = XCreateFontCursor( _display, XC_left_ptr );
// Create Null Cursor
{
Pixmap pixmap;
static char buff[2] = {0,0};
static XColor ncol = {0,0,0,0,DoRed|DoGreen|DoBlue,0};
pixmap = XCreateBitmapFromData( _display, _parent, buff, 1, 1);
_nullCursor = XCreatePixmapCursor( _display, pixmap, pixmap, &ncol, &ncol, 0, 0 );
}
useCursor(_traits->useCursor);
_deleteWindow = XInternAtom (_display, "WM_DELETE_WINDOW", False);