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Bug 159346 part.1 Scrollbar button should capture mouse events and do scroll only when cursor is on it r=enndeakin

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This commit is contained in:
Masayuki Nakano 2011-11-18 08:41:35 +09:00
parent 001f03627c
commit 006c75e2dd
2 changed files with 39 additions and 23 deletions
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59
layout/xul/base/src/nsScrollbarButtonFrame.cpp
View File

@ -84,15 +84,30 @@ nsScrollbarButtonFrame::HandleEvent(nsPresContext* aPresContext,
return NS_OK;
}
// XXX hack until handle release is actually called in nsframe.
if (aEvent->message == NS_MOUSE_EXIT_SYNTH ||
aEvent->message == NS_MOUSE_BUTTON_UP)
HandleRelease(aPresContext, aEvent, aEventStatus);
// if we didn't handle the press ourselves, pass it on to the superclass
if (!HandleButtonPress(aPresContext, aEvent, aEventStatus))
return nsButtonBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
return NS_OK;
switch (aEvent->message) {
case NS_MOUSE_BUTTON_DOWN:
mCursorOnThis = true;
// if we didn't handle the press ourselves, pass it on to the superclass
if (HandleButtonPress(aPresContext, aEvent, aEventStatus)) {
return NS_OK;
}
break;
case NS_MOUSE_BUTTON_UP:
HandleRelease(aPresContext, aEvent, aEventStatus);
break;
case NS_MOUSE_EXIT_SYNTH:
mCursorOnThis = false;
break;
case NS_MOUSE_MOVE: {
nsPoint cursor =
nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, this);
nsRect frameRect(nsPoint(0, 0), GetSize());
mCursorOnThis = frameRect.Contains(cursor);
break;
}
}
return nsButtonBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
}
@ -103,18 +118,13 @@ nsScrollbarButtonFrame::HandleButtonPress(nsPresContext* aPresContext,
{
// Get the desired action for the scrollbar button.
LookAndFeel::IntID tmpAction;
if (aEvent->eventStructType == NS_MOUSE_EVENT &&
aEvent->message == NS_MOUSE_BUTTON_DOWN) {
PRUint16 button = static_cast<nsMouseEvent*>(aEvent)->button;
if (button == nsMouseEvent::eLeftButton) {
tmpAction = LookAndFeel::eIntID_ScrollButtonLeftMouseButtonAction;
} else if (button == nsMouseEvent::eMiddleButton) {
tmpAction = LookAndFeel::eIntID_ScrollButtonMiddleMouseButtonAction;
} else if (button == nsMouseEvent::eRightButton) {
tmpAction = LookAndFeel::eIntID_ScrollButtonRightMouseButtonAction;
} else {
return false;
}
PRUint16 button = static_cast<nsMouseEvent*>(aEvent)->button;
if (button == nsMouseEvent::eLeftButton) {
tmpAction = LookAndFeel::eIntID_ScrollButtonLeftMouseButtonAction;
} else if (button == nsMouseEvent::eMiddleButton) {
tmpAction = LookAndFeel::eIntID_ScrollButtonMiddleMouseButtonAction;
} else if (button == nsMouseEvent::eRightButton) {
tmpAction = LookAndFeel::eIntID_ScrollButtonRightMouseButtonAction;
} else {
return false;
}
@ -180,6 +190,8 @@ nsScrollbarButtonFrame::HandleButtonPress(nsPresContext* aPresContext,
nsWeakFrame weakFrame(this);
mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::active, NS_LITERAL_STRING("true"), true);
nsIPresShell::SetCapturingContent(mContent, CAPTURE_IGNOREALLOWED);
if (weakFrame.IsAlive()) {
DoButtonAction(smoothScroll);
}
@ -193,6 +205,7 @@ nsScrollbarButtonFrame::HandleRelease(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
nsIPresShell::SetCapturingContent(nsnull, 0);
// we're not active anymore
mContent->UnsetAttr(kNameSpaceID_None, nsGkAtoms::active, true);
StopRepeat();
@ -203,7 +216,9 @@ void nsScrollbarButtonFrame::Notify()
{
// Since this is only going to get called if we're scrolling a page length
// or a line increment, we will always use smooth scrolling.
DoButtonAction(true);
if (mCursorOnThis) {
DoButtonAction(true);
}
}
void

3
layout/xul/base/src/nsScrollbarButtonFrame.h
View File

@ -57,7 +57,7 @@ public:
NS_DECL_FRAMEARENA_HELPERS
nsScrollbarButtonFrame(nsIPresShell* aPresShell, nsStyleContext* aContext):
nsButtonBoxFrame(aPresShell, aContext) {}
nsButtonBoxFrame(aPresShell, aContext), mCursorOnThis(false) {}
// Overrides
virtual void DestroyFrom(nsIFrame* aDestructRoot);
@ -105,6 +105,7 @@ protected:
}
PRInt32 mIncrement;
bool mCursorOnThis;
};
#endif