void
Shelf::Draw(BView *view, int32 frame)
{
PRINT(("%p:%s(, %d)\n", this, __FUNCTION__, frame));
BScreenSaver::Draw(view, frame);
#if 0
if (frame == 0) {
// fill with blue on first frame
view->SetLowColor(kMediumBlue);
view->FillRect(view->Bounds(), B_SOLID_LOW);
// Set tick size to 500,000 microseconds = 0.5 second
SetTickSize(500000);
} else {
// Drawing the background color every other frame to make the text blink
if (frame % 2 == 1)
view->SetHighColor(kWhite);
else
view->SetHighColor(kMediumBlue);
view->DrawString(fLine1, fLine1Start);
view->DrawString(fLine2, fLine2Start);
}
#endif
}
status_t
Message::StartSaver(BView *view, bool preview)
{
fPreview = preview;
// Scale factor is based on the system I developed this on, in
// other words other factors below depend on this.
fScaleFactor = view->Bounds().Height() / 1024;
// Get font families
int numFamilies = count_font_families();
for (int32 i = 0; i < numFamilies; i++) {
font_family* family = new font_family[1];
uint32 flags;
if (get_font_family(i, family, &flags) == B_OK
&& (flags & B_IS_FIXED) == 0) {
// Do not add fixed fonts
fFontFamilies.AddItem(family);
} else
delete[] family;
}
// Seed the random number generator
srand((int)system_time());
// Set tick size to 30,000,000 microseconds = 30 seconds
SetTickSize(30000000);
return B_OK;
}
status_t
Butterfly::StartSaver(BView* view, bool preview)
{
view->SetLowColor(0, 0, 0);
view->FillRect(view->Bounds(), B_SOLID_LOW);
view->SetDrawingMode(B_OP_ALPHA);
view->SetBlendingMode(B_CONSTANT_ALPHA, B_ALPHA_OVERLAY);
view->SetLineMode(B_ROUND_CAP, B_ROUND_JOIN);
if (!preview)
view->SetPenSize(2.0);
SetTickSize(20000);
// Set fBase to a random radian value scaled by 1000. The scaling produces
// more interesting results.
srand48(system_time());
fBase = drand48() * 2 * M_PI * 1000;
// calculate transformation
BRect bounds = view->Bounds();
fScale = MIN(bounds.Width(), bounds.Height()) * 0.1f;
fTrans.Set(bounds.Width() * 0.5f, bounds.Height() * 0.5f);
fBounds = bounds;
fLast[0] = _Iterate();
fLast[1] = _Iterate();
fLast[2] = _Iterate();
return B_OK;
}
status_t
Leaves::StartSaver(BView* view, bool preview)
{
SetTickSize(10000000 / fDropRate);
srand48(time(NULL));
view->SetLineMode(B_ROUND_CAP, B_ROUND_JOIN);
return B_OK;
}
status_t
SlideShowSaver::UpdateTickSize()
{
// Tick size is in microseconds, but is stored in settings as
// milliseconds
bigtime_t ticks = static_cast<bigtime_t>
(fSettings->SetGetInt32(SAVER_SETTING_DELAY)) * 1000;
SetTickSize(ticks);
return B_OK;
}
// StartSaver
status_t
IFSSaver::StartSaver(BView *v, bool preview)
{
display_mode mode;
BScreen screen(B_MAIN_SCREEN_ID);
screen.GetMode(&mode);
float totalSize = mode.timing.h_total * mode.timing.v_total;
float fps = mode.timing.pixel_clock * 1000.0 / totalSize;
//printf("ticks per frame: %lldµs\n", (int64)floor(1000000.0 / fps + 0.5));
SetTickSize((int64)floor(1000000.0 / fps + 0.5));
fIsPreview = preview;
fBounds = v->Bounds();
_Init(fBounds);
fIFS->SetAdditive(fIsPreview || fAdditive);
fIFS->SetSpeed(fSpeed);
return B_OK;
}
status_t
FallLeaves::StartSaver(BView* view, bool preview)
{
BRect screenRect = view->Bounds();
// Initialize the screen buffer
fBackBitmap = new BBitmap(screenRect, B_RGBA32, true);
fBackView = new BView(screenRect, NULL, 0, 0);
fBackBitmap->AddChild(fBackView);
if (fBackBitmap->Lock()) {
fBackView->FillRect(fBackView->Bounds());
fBackView->SetDrawingMode(B_OP_OVER); // Leaf transparency
fBackBitmap->Unlock();
}
// Set the rate the screensaver to be updated 100 times per second
// The argument here is in microseconds
SetTickSize(MICROSECS_IN_SEC / TICKS_PER_SECOND);
// Initialize the random number generator
srand(system_time() % INT_MAX);
// The max size of a leaf will be about 20% the
// height of the screen
fSize = (view->Bounds().IntegerHeight() * 2) / 10;
fLeaves = new BObjectList<Leaf>();
// Create some leaves
for (int32 i = 0; i < fAmount; i++)
fLeaves->AddItem(_CreateLeaf(view, true));
// Sort the leaves by Z axis
fLeaves->SortItems(cmpz);
return B_OK;
}
void
ScreenSaver::Draw(BView *view, int32 frame)
{
if (frame == 0) {
// fill with black on first frame
view->SetLowColor(0, 0, 0);
view->FillRect(view->Bounds(), B_SOLID_LOW);
} else {
// erase old text on all other frames
view->SetHighColor(0, 0, 0);
view->DrawString(fText, BPoint(fX, fY));
}
// find some new text coordinates
fX = rand() % int(fSizeX - fTextWith);
fY = rand() % int(fSizeY - fTextHeight - (fIsPreview ? 2 : 20)) + fTextHeight;
// draw new text
view->SetHighColor(0, 255, 0);
view->DrawString(fText, BPoint(fX, fY));
// randomize time until next update (preview mode is faster)
SetTickSize(((rand() % 4) + 1) * (fIsPreview ? 300000 : 1000000));
}
status_t
Clock::StartSaver(BView *view, bool)
{
SetTickSize(1000000);
return B_OK;
}
