Cursor
XcursorLibraryLoadCursor (Display *dpy, const char *file)
{
int size = XcursorGetDefaultSize (dpy);
char *theme = XcursorGetTheme (dpy);
XcursorImages *images = XcursorLibraryLoadImages (file, theme, size);
Cursor cursor;
if (!file)
return 0;
if (!images)
{
int id = XcursorLibraryShape (file);
if (id >= 0)
return _XcursorCreateFontCursor (dpy, id);
else
return 0;
}
cursor = XcursorImagesLoadCursor (dpy, images);
XcursorImagesDestroy (images);
#if defined HAVE_XFIXES && XFIXES_MAJOR >= 2
XFixesSetCursorName (dpy, cursor, file);
#endif
return cursor;
}
JNIEXPORT jlong JNICALL Java_org_lwjgl_opengl_LinuxDisplay_nCreateCursor
(JNIEnv *env, jclass clazz, jlong display, jint width, jint height, jint x_hotspot, jint y_hotspot, jint num_images, jobject image_buffer, jint images_offset, jobject delay_buffer, jint delays_offset)
{
Display *disp = (Display *)(intptr_t)display;
const int *delays = NULL;
if (delay_buffer != NULL)
delays = (const int *)(*env)->GetDirectBufferAddress(env, delay_buffer) + delays_offset;
XcursorPixel *pixels = (XcursorPixel *)(*env)->GetDirectBufferAddress(env, image_buffer) + images_offset;
int stride = width*height;
XcursorImages *cursor_images = XcursorImagesCreate(num_images);
if (cursor_images == NULL) {
throwException(env, "Could not allocate cursor.");
return None;
}
cursor_images->nimage = num_images;
int i;
for (i = 0; i < num_images; i++) {
XcursorImage *cursor_image = XcursorImageCreate(width, height);
cursor_image->xhot = x_hotspot;
cursor_image->yhot = y_hotspot;
cursor_image->pixels = &(pixels[stride*i]);
if (num_images > 1)
cursor_image->delay = delays[i];
cursor_images->images[i] = cursor_image;
}
Cursor cursor = XcursorImagesLoadCursor(disp, cursor_images);
XcursorImagesDestroy(cursor_images);
return cursor;
}
void CHwX11Cursor::Finish()
{
if (cimages.size()<1)
return;
//resize images
for (std::vector<XcursorImage*>::iterator it = cimages.begin(); it < cimages.end(); ++it)
resizeImage(*it, xmaxsize, ymaxsize);
XcursorImages *cis = XcursorImagesCreate(cimages.size());
cis->nimage = cimages.size();
for (int i = 0; i < int(cimages.size()); ++i) {
XcursorImage* ci = cimages[i];
ci->xhot = (hotSpot==CMouseCursor::TopLeft) ? 0 : ci->width/2;
ci->yhot = (hotSpot==CMouseCursor::TopLeft) ? 0 : ci->height/2;
cis->images[i] = ci;
}
SDL_SysWMinfo info;
SDL_VERSION(&info.version);
if (!SDL_GetWMInfo(&info)) {
XcursorImagesDestroy(cis);
cimages.clear();
logOutput.Print("SDL error: can't get X11 window info");
return;
}
cursor = XcursorImagesLoadCursor(info.info.x11.display,cis);
XcursorImagesDestroy(cis);
cimages.clear();
}
QCursor XCursorThemeData::loadCursor (const QString &name, int size) const {
if (size == -1) size = XcursorGetDefaultSize(QX11Info::display());
// Load the cursor images
XcursorImages *images = xcLoadImages(name, size);
if (!images) images = xcLoadImages(findAlternative(name), size);
// Fall back to a legacy cursor
//if (!images) return LegacyTheme::loadCursor(name);
if (!images) return false;
// Create the cursor
Cursor handle = XcursorImagesLoadCursor(QX11Info::display(), images);
QCursor cursor = QCursor(Qt::HANDLE(handle)); // QCursor takes ownership of the handle
XcursorImagesDestroy(images);
//setCursorName(cursor, name);
return cursor;
}
qulonglong XCursorTheme::loadCursor(const QString &name, int size) const
{
if (size <= 0)
size = autodetectCursorSize();
// Load the cursor images
XcursorImages *images = xcLoadImages(name, size);
if (!images)
images = xcLoadImages(findAlternative(name), size);
if (!images)
return None;
// Create the cursor
Cursor handle = XcursorImagesLoadCursor(QX11Info::display(), images);
XcursorImagesDestroy(images);
setCursorName(handle, name);
return handle;
}
void PreviewCursor::load(const QString &name, const QString &theme)
{
Display *dpy = QPaintDevice::x11AppDisplay();
if(m_pict)
XRenderFreePicture(dpy, m_pict);
if(m_handle)
XFreeCursor(dpy, m_handle);
m_pict = 0;
m_handle = 0;
m_width = m_height = 0;
// Load the preview cursor image
XcursorImage *image = XcursorLibraryLoadImage(name.latin1(), theme.latin1(), previewSize);
// If the theme doesn't have this cursor, load the default cursor for now
if(!image)
image = XcursorLibraryLoadImage("left_ptr", theme.latin1(), previewSize);
// TODO The old classic X cursors
if(!image)
return;
// Auto-crop the image (some cursor themes use a fixed image size
// for all cursors, and doing this results in correctly centered images)
cropCursorImage(image);
m_pict = createPicture(image);
m_width = image->width;
m_height = image->height;
// Scale the image if its height is greater than 2x the requested size
if(m_height > previewSize * 2.0)
{
double factor = double(previewSize * 2.0 / m_height);
XTransform xform = {{{XDoubleToFixed(1.0), XDoubleToFixed(0), XDoubleToFixed(0)},
{XDoubleToFixed(0), XDoubleToFixed(1.0), XDoubleToFixed(0)},
{XDoubleToFixed(0), XDoubleToFixed(0), XDoubleToFixed(factor)}}};
XRenderSetPictureTransform(dpy, m_pict, &xform);
m_width = int(m_width * factor);
m_height = int(m_height * factor);
}
// We don't need this image anymore
XcursorImageDestroy(image);
// Load the actual cursor we will use
int size = XcursorGetDefaultSize(dpy);
XcursorImages *images = XcursorLibraryLoadImages(name.latin1(), theme.latin1(), size);
if(images)
{
m_handle = XcursorImagesLoadCursor(dpy, images);
XcursorImagesDestroy(images);
}
else
{
images = XcursorLibraryLoadImages("left_ptr", theme.latin1(), size);
m_handle = XcursorImagesLoadCursor(dpy, images);
XcursorImagesDestroy(images);
}
}
