void
TouchpadView::MouseMoved(BPoint point, uint32 transit, const BMessage* message)
{
if (fXTracking) {
if (point.x > fPadRect.right)
fXScrollRange = fPadRect.Width();
else if (point.x < fPadRect.left)
fXScrollRange = 0;
else
fXScrollRange = point.x - fPadRect.left;
DrawSliders();
}
if (fYTracking) {
if (point.y > fPadRect.bottom)
fYScrollRange = fPadRect.Height();
else if (point.y < fPadRect.top)
fYScrollRange = 0;
else
fYScrollRange = point.y - fPadRect.top;
DrawSliders();
}
}
void
TouchpadView::MouseUp(BPoint point)
{
if (!fXTracking && !fYTracking)
return;
fXTracking = false;
fYTracking = false;
const float kSoftScrollLimit = 0.7;
int32 result = 0;
if (GetRightScrollRatio() > kSoftScrollLimit
|| GetBottomScrollRatio() > kSoftScrollLimit) {
BAlert* alert = new BAlert("ReallyChangeScrollArea",
"The new scroll area is very large and may impede "
"normal mouse operation. Do you really want to change"
" it?", "OK", "Cancel", NULL, B_WIDTH_AS_USUAL,
B_WARNING_ALERT);
result = alert->Go();
}
if (result == 0) {
BMessage msg(SCROLL_AREA_CHANGED);
Invoke(&msg);
} else {
if (GetRightScrollRatio() > kSoftScrollLimit)
fXScrollRange = fOldXScrollRange;
if (GetBottomScrollRatio() > kSoftScrollLimit)
fYScrollRange = fOldYScrollRange;
DrawSliders();
}
}
void TLevelsSlider::TrackSliders()
{
BPoint newPt, oldPt;
// Check to see if button is down
uint32 buttons = 0;
GetMouse(&newPt, &buttons, true);
while(buttons)
{
// Idle if in same mouse location
if (newPt.y != oldPt.y)
{
// Get old positions
BRect oldLeftRect = m_LeftSliderRect;
BRect oldRightRect = m_RightSliderRect;
// Move both left and right slider under mouse
const uint32 leftHeight = m_LeftSlider->Bounds().IntegerHeight();
const uint32 rightHeight = m_RightSlider->Bounds().IntegerHeight();
m_LeftSliderRect.top = newPt.y - leftHeight/2;
m_LeftSliderRect.bottom = m_LeftSliderRect.top + leftHeight;
m_RightSliderRect.top = newPt.y - leftHeight/2;
m_RightSliderRect.bottom = m_RightSliderRect.top + rightHeight;
// Now clip the location of the slider if out of bounds
ClipSliders();
// Clean up old position
BRect updateRect = oldLeftRect;
updateRect.right = oldRightRect.right;
Draw(updateRect);
// Draw new location
DrawSliders();
// Set new volume level
UpdateVolumes(newPt);
// Save mouse location
oldPt = newPt;
}
// Let other events through
snooze(20 * 1000);
// Get new mouse location and button state
GetMouse(&newPt, &buttons, true);
// Clip location
const BRect bounds = Bounds();
if ( newPt.y < bounds.top+kTopOffset)
newPt.y = bounds.top+kTopOffset;
if ( newPt.y > bounds.bottom-kBottomOffset)
newPt.y = bounds.bottom-kBottomOffset;
}
}
void TLevelsSlider::Draw(BRect updateRect)
{
PushState();
// Set up clipping
BRegion clipRegion, saveRegion;
GetClippingRegion(&saveRegion);
clipRegion.Set(updateRect);
ConstrainClippingRegion( &clipRegion );
BPoint startPt, endPt;
const BRect bounds = Bounds();
// Fill with background
SetHighColor(kPaleGrey);
FillRect(updateRect);
// Create left frame
SetHighColor(kDarkGrey);
startPt.Set(bounds.left, bounds.bottom);
endPt.Set(bounds.left, bounds.top);
StrokeLine(startPt, endPt);
endPt.Set(bounds.right-2, bounds.top);
StrokeLine(endPt);
// Create left shadow
SetHighColor(kBeShadow);
BRect shadowOutline = bounds;
shadowOutline.InsetBy(1,1);
StrokeRect(shadowOutline);
startPt.Set(shadowOutline.left+1, shadowOutline.bottom);
endPt.Set(shadowOutline.left+1, shadowOutline.top+1);
StrokeLine(startPt, endPt);
endPt.Set(shadowOutline.right, shadowOutline.top+1);
StrokeLine(endPt);
startPt.Set(shadowOutline.right-1, shadowOutline.top+1);
endPt.Set(shadowOutline.right-1, shadowOutline.bottom-1);
StrokeLine(startPt, endPt);
endPt.Set(shadowOutline.left-2, shadowOutline.bottom-1);
StrokeLine(endPt);
// Create right hilite
SetHighColor(kPaleGrey);
startPt.Set(bounds.right, bounds.top);
endPt.Set(bounds.right, bounds.bottom);
StrokeLine(startPt, endPt);
endPt.Set(bounds.left, bounds.bottom);
StrokeLine(endPt);
startPt.Set(bounds.right-1, bounds.top+1);
endPt.Set(bounds.right-1, bounds.bottom-1);
StrokeLine(startPt, endPt);
endPt.Set(bounds.left, bounds.bottom-1);
StrokeLine(endPt);
// Create channel slot
BRect slot = bounds;
slot.left = (bounds.Width()/2) - 3;
slot.right = (bounds.Width()/2) + 2;
slot.top += 1;
slot.bottom -= 3;
SetHighColor(kBlack);
FillRect(slot);
// Draw slot hilites
startPt.Set(slot.left, slot.top);
endPt.Set(slot.left, slot.bottom);
SetHighColor(kDarkGrey);
StrokeLine(startPt, endPt);
slot.top +=1;
slot.left = slot.right-2;
rgb_color dkGrey = {35,35,35,255};
SetHighColor(dkGrey);
FillRect(slot);
// Draw ticks
DrawSliderTicks();
// Draw Sliders
DrawSliders();
ConstrainClippingRegion( &saveRegion );
PopState();
}
void
TouchpadView::Draw(BRect updateRect)
{
DrawSliders();
}
