int64
TrackIndex::CountFrames() const
{
int64 frames = 0;
for (int32 i = 0; i < CountChannels(); i++) {
MediaBlockMap* channel = fChannels->ItemAt(i);
if (channel->CountFrames() > frames)
frames = channel->CountFrames();
}
return frames;
}
void
BChannelSlider::_FinishChange(bool update)
{
if (fInitialValues != NULL) {
bool* inMask = NULL;
int32 numChannels = CountChannels();
if (!fAllChannels) {
inMask = new (std::nothrow) bool[CountChannels()];
if (inMask) {
for (int i=0; i<numChannels; i++)
inMask[i] = false;
inMask[fCurrentChannel] = true;
}
}
InvokeChannel(update ? ModificationMessage() : NULL, 0, numChannels,
inMask);
}
if (!update) {
SetTracking(false);
Invalidate();
}
}
void
BChannelSlider::GetPreferredSize(float* width, float* height)
{
_UpdateFontDimens();
if (fIsVertical) {
*width = 11.0 * CountChannels();
*width = max_c(*width, ceilf(StringWidth(Label())));
*width = max_c(*width, ceilf(StringWidth(MinLimitLabel())));
*width = max_c(*width, ceilf(StringWidth(MaxLimitLabel())));
*width += kPadding * 2.0;
*height = (fLineFeed * 3.0) + (kPadding * 2.0) + 147.0;
} else {
*width = max_c(64.0, ceilf(StringWidth(Label())));
*width = max_c(*width, ceilf(StringWidth(MinLimitLabel()))
+ ceilf(StringWidth(MaxLimitLabel())) + 10.0);
*width += kPadding * 2.0;
*height = 11.0 * CountChannels() + (fLineFeed * 2.0)
+ (kPadding * 2.0);
}
}
uint8_t RegionCommonCountChannels( uint16_t* channelsMask, uint8_t startIdx, uint8_t stopIdx )
{
uint8_t nbChannels = 0;
if( channelsMask == NULL )
{
return 0;
}
for( uint8_t i = startIdx; i < stopIdx; i++ )
{
nbChannels += CountChannels( channelsMask[i], 16 );
}
return nbChannels;
}
bool
AudioTrack::IsStereo() const
{
return CountChannels() == 2;
}
bool
AudioTrack::IsMono() const
{
return CountChannels() == 1;
}
void
BChannelSlider::_DrawThumbs()
{
if (fBacking == NULL) {
// This is the idea: we build a bitmap by taking the coordinates
// of the first and last thumb frames (top/left and bottom/right)
BRect first = ThumbFrameFor(0);
BRect last = ThumbFrameFor(CountChannels() - 1);
BRect rect(first.LeftTop(), last.RightBottom());
if (fIsVertical)
rect.top -= ThumbRangeFor(0);
else
rect.right += ThumbRangeFor(0);
rect.OffsetTo(B_ORIGIN);
fBacking = new (std::nothrow) BBitmap(rect, B_RGB32, true);
if (fBacking) {
fBackingView = new (std::nothrow) BView(rect, "", 0, B_WILL_DRAW);
if (fBackingView) {
if (fBacking->Lock()) {
fBacking->AddChild(fBackingView);
fBackingView->SetFontSize(10.0);
fBackingView->SetLowColor(
ui_color(B_PANEL_BACKGROUND_COLOR));
fBackingView->SetViewColor(
ui_color(B_PANEL_BACKGROUND_COLOR));
fBacking->Unlock();
}
} else {
delete fBacking;
fBacking = NULL;
}
}
}
if (fBacking && fBackingView) {
BPoint drawHere;
BRect bounds(fBacking->Bounds());
drawHere.x = (Bounds().Width() - bounds.Width()) / 2.0;
drawHere.y = (Bounds().Height() - bounds.Height()) - kPadding
- fLineFeed;
if (fBacking->Lock()) {
// Clear the view's background
fBackingView->FillRect(fBackingView->Bounds(), B_SOLID_LOW);
BRect channelArea;
// draw the entire control
for (int32 channel = 0; channel < CountChannels(); channel++) {
channelArea = ThumbFrameFor(channel);
bool pressed = IsTracking()
&& (channel == fCurrentChannel || fAllChannels);
DrawChannel(fBackingView, channel, channelArea, pressed);
}
// draw some kind of current value tool tip
if (fCurrentChannel != -1 && fMinPoint != 0) {
char valueString[32];
snprintf(valueString, 32, "%ld", ValueFor(fCurrentChannel));
float stringWidth = fBackingView->StringWidth(valueString);
float width = max_c(10.0, stringWidth);
BRect valueRect(0.0, 0.0, width, 10.0);
BRect thumbFrame(ThumbFrameFor(fCurrentChannel));
float thumbDelta(ThumbDeltaFor(fCurrentChannel));
if (fIsVertical) {
valueRect.OffsetTo((thumbFrame.Width() - width) / 2.0
+ fCurrentChannel * thumbFrame.Width(),
thumbDelta + thumbFrame.Height() + 2.0);
if (valueRect.bottom > fBackingView->Frame().bottom)
valueRect.OffsetBy(0.0, -(thumbFrame.Height() + 12.0));
} else {
valueRect.OffsetTo((thumbDelta - (width + 2.0)),
thumbFrame.top);
if (valueRect.left < fBackingView->Frame().left) {
valueRect.OffsetBy(thumbFrame.Width() + width + 2.0,
0.0);
}
}
rgb_color oldColor = fBackingView->HighColor();
fBackingView->SetHighColor(255, 255, 172);
fBackingView->FillRect(valueRect);
fBackingView->SetHighColor(0, 0, 0);
fBackingView->DrawString(valueString, BPoint(valueRect.left
+ (valueRect.Width() - stringWidth) / 2.0, valueRect.bottom
- 1.0));
fBackingView->StrokeRect(valueRect.InsetByCopy(-0.5, -0.5));
fBackingView->SetHighColor(oldColor);
}
fBackingView->Sync();
fBacking->Unlock();
}
DrawBitmapAsync(fBacking, drawHere);
// fClickDelta is used in MouseMoved()
fClickDelta = drawHere;
}
}
void
BChannelSlider::MouseDown(BPoint where)
{
if (!IsEnabled())
BControl::MouseDown(where);
else {
fCurrentChannel = -1;
fMinPoint = 0;
// Search the channel on which the mouse was over
int32 numChannels = CountChannels();
for (int32 channel = 0; channel < numChannels; channel++) {
BRect frame = ThumbFrameFor(channel);
frame.OffsetBy(fClickDelta);
float range = ThumbRangeFor(channel);
if (fIsVertical) {
fMinPoint = frame.top + frame.Height() / 2;
frame.bottom += range;
} else {
// TODO: Fix this, the clickzone isn't perfect
frame.right += range;
fMinPoint = frame.Width();
}
// Click was on a slider.
if (frame.Contains(where)) {
fCurrentChannel = channel;
SetCurrentChannel(channel);
break;
}
}
// Click wasn't on a slider. Bail out.
if (fCurrentChannel == -1)
return;
uint32 buttons = 0;
BMessage* currentMessage = Window()->CurrentMessage();
if (currentMessage != NULL)
currentMessage->FindInt32("buttons", (int32*)&buttons);
fAllChannels = (buttons & B_SECONDARY_MOUSE_BUTTON) == 0;
if (fInitialValues != NULL && fAllChannels) {
delete[] fInitialValues;
fInitialValues = NULL;
}
if (fInitialValues == NULL)
fInitialValues = new (std::nothrow) int32[numChannels];
if (fInitialValues) {
if (fAllChannels) {
for (int32 i = 0; i < numChannels; i++)
fInitialValues[i] = ValueFor(i);
} else {
fInitialValues[fCurrentChannel] = ValueFor(fCurrentChannel);
}
}
if (Window()->Flags() & B_ASYNCHRONOUS_CONTROLS) {
if (!IsTracking()) {
SetTracking(true);
_DrawThumbs();
Flush();
}
_MouseMovedCommon(where, B_ORIGIN);
SetMouseEventMask(B_POINTER_EVENTS, B_LOCK_WINDOW_FOCUS |
B_NO_POINTER_HISTORY);
} else {
do {
snooze(30000);
GetMouse(&where, &buttons);
_MouseMovedCommon(where, B_ORIGIN);
} while (buttons != 0);
_FinishChange();
fCurrentChannel = -1;
fAllChannels = false;
}
}
}
