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();
}
