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We now have mouse wheel support for all views that have scroll bars. Should

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probably increase the values we got from BScrollBar::GetSteps(), though, as
it's a bit slow.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15755 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2005-12-30 21:02:33 +00:00
parent 9aad1a5754
commit 456d0d082b
1 changed files with 41 additions and 1 deletions
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42
src/kits/interface/View.cpp
View File

@ -3642,7 +3642,47 @@ BView::MessageReceived(BMessage *msg)
status_t err;
if (!msg->HasSpecifiers()) {
BHandler::MessageReceived(msg);
if (msg->what == B_MOUSE_WHEEL_CHANGED) {
float deltaX = 0.0f, deltaY = 0.0f;
BScrollBar *horizontal = ScrollBar(B_HORIZONTAL);
if (horizontal != NULL)
msg->FindFloat("be:wheel_delta_x", &deltaX);
BScrollBar *vertical = ScrollBar(B_VERTICAL);
if (vertical != NULL)
msg->FindFloat("be:wheel_delta_y", &deltaY);
if (deltaX == 0.0f && deltaY == 0.0f)
return;
float smallStep, largeStep;
if (horizontal != NULL) {
horizontal->GetSteps(&smallStep, &largeStep);
// pressing the option key scrolls faster
if (modifiers() & B_OPTION_KEY)
deltaX *= largeStep;
else
deltaX *= smallStep;
horizontal->SetValue(horizontal->Value() + deltaX);
}
if (vertical != NULL) {
vertical->GetSteps(&smallStep, &largeStep);
// pressing the option key scrolls faster
if (modifiers() & B_OPTION_KEY)
deltaY *= largeStep;
else
deltaY *= smallStep;
vertical->SetValue(vertical->Value() + deltaY);
}
} else
BHandler::MessageReceived(msg);
return;
}