void
SplashNextFrame(Splash * splash)
{
if (splash->currentFrame < 0) {
return;
}
do {
if (!SplashIsStillLooping(splash)) {
return;
}
splash->time += splash->frames[splash->currentFrame].delay;
if (++splash->currentFrame >= splash->frameCount) {
splash->currentFrame = 0;
if (splash->loopCount > 0) {
splash->loopCount--;
}
}
} while (splash->time + splash->frames[splash->currentFrame].delay -
SplashTime() <= 0);
}
/* The function makes the window visible if it is hidden
or is not yet shown. */
void
SplashRedrawWindow(Splash * splash)
{
if (!SplashIsStillLooping(splash)) {
KillTimer(splash->hWnd, 0);
}
if (splash->currentFrame < 0) {
return;
}
SplashUpdateScreenData(splash);
if (splash->isLayered) {
BLENDFUNCTION bf;
POINT ptSrc;
HDC hdcSrc = CreateCompatibleDC(NULL), hdcDst;
BITMAPINFOHEADER bmi;
void *bitmapBits;
HBITMAP hBitmap, hOldBitmap;
RECT rect;
POINT ptDst;
SIZE size;
bf.BlendOp = AC_SRC_OVER;
bf.BlendFlags = 0;
bf.AlphaFormat = AC_SRC_ALPHA;
bf.SourceConstantAlpha = 0xFF;
ptSrc.x = ptSrc.y = 0;
memset(&bmi, 0, sizeof(bmi));
bmi.biSize = sizeof(BITMAPINFOHEADER);
bmi.biWidth = splash->width;
bmi.biHeight = -splash->height;
bmi.biPlanes = 1;
bmi.biBitCount = 32;
bmi.biCompression = BI_RGB;
// FIXME: this is somewhat ineffective
// maybe if we allocate memory for all frames as DIBSections,
// then we could select the frames into the DC directly
hBitmap = CreateDIBSection(NULL, (BITMAPINFO *) & bmi, DIB_RGB_COLORS,
&bitmapBits, NULL, 0);
memcpy(bitmapBits, splash->screenData,
splash->screenStride * splash->height);
hOldBitmap = (HBITMAP) SelectObject(hdcSrc, hBitmap);
hdcDst = GetDC(splash->hWnd);
GetWindowRect(splash->hWnd, &rect);
ptDst.x = rect.left;
ptDst.y = rect.top;
size.cx = splash->width;
size.cy = splash->height;
UpdateLayeredWindow(splash->hWnd, hdcDst, &ptDst, &size,
hdcSrc, &ptSrc, 0, &bf, ULW_ALPHA);
ReleaseDC(splash->hWnd, hdcDst);
SelectObject(hdcSrc, hOldBitmap);
DeleteObject(hBitmap);
DeleteDC(hdcSrc);
}
else {
InvalidateRect(splash->hWnd, NULL, FALSE);
if (splash->maskRequired) {
HRGN hRgn = CreateRectRgn(0, 0, 0, 0);
CombineRgn(hRgn, splash->frames[splash->currentFrame].hRgn,
splash->frames[splash->currentFrame].hRgn, RGN_COPY);
SetWindowRgn(splash->hWnd, hRgn, TRUE);
} else {
SetWindowRgn(splash->hWnd, NULL, TRUE);
}
UpdateWindow(splash->hWnd);
}
if (!IsWindowVisible(splash->hWnd)) {
POINT cursorPos;
ShowWindow(splash->hWnd, SW_SHOW);
// Windows won't update the cursor after the window is shown,
// if the cursor is already above the window. need to do this manually.
GetCursorPos(&cursorPos);
if (WindowFromPoint(cursorPos) == splash->hWnd) {
// unfortunately Windows fail to understand that the window
// thread should own the cursor, even though the mouse pointer
// is over the window, until the mouse has been moved.
// we're using SetCursorPos here to fake the mouse movement
// and enable proper update of the cursor.
SetCursorPos(cursorPos.x, cursorPos.y);
SetCursor(LoadCursor(NULL, IDC_WAIT));
}
}
if (SplashIsStillLooping(splash)) {
int time = splash->time +
splash->frames[splash->currentFrame].delay - SplashTime();
if (time < 0)
time = 0;
SetTimer(splash->hWnd, 0, time, NULL);
}
}
void
SplashEventLoop(Splash * splash) {
/* Different from win32 implementation - this loop
uses poll timeouts instead of a timer */
/* we should have splash _locked_ on entry!!! */
int xconn = XConnectionNumber(splash->display);
while (1) {
struct pollfd pfd[2];
int timeout = -1;
int ctl = splash->controlpipe[0];
int rc;
int pipes_empty;
pfd[0].fd = xconn;
pfd[0].events = POLLIN | POLLPRI;
pfd[1].fd = ctl;
pfd[1].events = POLLIN | POLLPRI;
errno = 0;
if (splash->isVisible>0 && SplashIsStillLooping(splash)) {
timeout = splash->time + splash->frames[splash->currentFrame].delay
- SplashTime();
if (timeout < 0) {
timeout = 0;
}
}
SplashUnlock(splash);
rc = poll(pfd, 2, timeout);
SplashLock(splash);
if (splash->isVisible>0 && SplashTime() >= splash->time +
splash->frames[splash->currentFrame].delay) {
SplashNextFrame(splash);
SplashUpdateShape(splash);
SplashRedrawWindow(splash);
}
if (rc <= 0) {
errno = 0;
continue;
}
pipes_empty = 0;
while(!pipes_empty) {
char buf;
pipes_empty = 1;
if (read(ctl, &buf, sizeof(buf)) > 0) {
pipes_empty = 0;
switch (buf) {
case SPLASHCTL_UPDATE:
if (splash->isVisible>0) {
SplashRedrawWindow(splash);
}
break;
case SPLASHCTL_RECONFIGURE:
if (splash->isVisible>0) {
SplashReconfigureNow(splash);
}
break;
case SPLASHCTL_QUIT:
return;
}
}
// we're not using "while(XPending)", processing one event
// at a time to avoid control pipe starvation
if (XPending(splash->display)) {
XEvent evt;
pipes_empty = 0;
XNextEvent(splash->display, &evt);
switch (evt.type) {
case Expose:
if (splash->isVisible>0) {
// we're doing full redraw so we just
// skip the remaining painting events in the queue
while(XCheckTypedEvent(splash->display, Expose,
&evt));
SplashRedrawWindow(splash);
}
break;
/* ... */
}
}
}
}
}