149514 - drag and drop snapback goes to wrong place

Status: VERIFIED FIXED

(Camino Graveyard :: General, defect)

Description

[Tim Buchheim]

When you drag a link or an image from a web page and then drop it somewhere
which isn't a valid drop target (menubar or window titlebar, for example) the
outline snaps back to the original location as it should.  almost.

it actually snaps back to the wrong place.  if it should go near the top of the
screen, it goes to the bottom.  if i should go towards the bottom, it heads for
the top.  It also briefly appears in the wrong place when you first start
dragging, although it appears in the correct place while dragging it.

It looks like the coordinate system is flipped the wrong way for part of the
drawing.  (my guess is that Chimera flips the coordinate space in the window to
put the origin in the upper left, but you forget to flip it back when converting
the position to screen coordinates, which have the origin in the lower left
corner in Quartz)

Comment 1

[saari (gone)]

low priority drag and drop bug

Comment 2

[Mike Pinkerton (not reading bugmail)]

this is because the dnd stuff is still carbon, so the coordinate system is
flipped from the surrounding cocoa coordinates. we'll have to rewrite the dnd
system in cocoa to fix this.

Comment 3

[Mike Pinkerton (not reading bugmail)]

*** Bug 153314 has been marked as a duplicate of this bug. ***

Comment 4

[Simon Fraser [no longer active]]

I have a fix

Comment 5

[Simon Fraser [no longer active]]

I fixed this by adjusting the drag region to be in Quartz coordinates relative
to the screen. May also fix some other mysterious Drag and Drop failures, and
maybe even crashes.

Comment 6

[Winnie Lam]

verified with 07-31 build on OS 10.1.5.

Comment 7

[Simon Fraser [no longer active]]

Ack, i was looking for this bug earlier. We need to test this on a 2-screen
machine; it doesn't work right there.

Comment 8

[Mike Pinkerton (not reading bugmail)]

changing GetMaxDevice to GetMainDevice fixes the offset problems on multiple
monitors. fix checked into the chimera branch.

Comment 9

[Winnie Lam]

petersen, would you have a multiple monitors setup to verify this?

Comment 10

[Chris Petersen]

I would love to verify this bug but can't based on my video card (Gforce 2 mX
TwinView). I could get a special adapter (ACD --> SVGA) that lets my connect a
second SVGA monitor to my PowerMac. But the web site (Dr.Bott.com) states that
it's incompatiable with my TwinView video card.

Comment 11

[Mike Pinkerton (not reading bugmail)]

v on my dual-headed dual800