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Added drag&drop support, some cleanup - courtesy of stippi. 

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@15850 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler 2006-01-06 11:49:06 +00:00
parent 71d2531d52
commit 23ae1e249f
1 changed files with 69 additions and 61 deletions
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130
src/kits/interface/ListView.cpp
View File

@ -1,33 +1,14 @@
//------------------------------------------------------------------------------
// Copyright (c) 2001-2005, Haiku, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
// File Name: ListView.cpp
// Author: Ulrich Wimboeck
// Marc Flerackers (mflerackers@androme.be)
// Description: BListView represents a one-dimensional list view.
//------------------------------------------------------------------------------
/*
* Copyright (c) 2001-2006, Haiku, Inc.
* Distributed under the terms of the MIT license.
*
* Authors:
* Ulrich Wimboeck
* Marc Flerackers (mflerackers@androme.be)
* Stephan Assmus <superstippi@gmx.de>
*/
// Standard Includes -----------------------------------------------------------
// System Includes -------------------------------------------------------------
#include <stdio.h>
#include <ListView.h>
@ -37,13 +18,14 @@
#include <PropertyInfo.h>
#include <Window.h>
// Project Includes ------------------------------------------------------------
struct track_data {
BPoint drag_start;
int32 item_index;
bool was_selected;
bool try_drag;
};
// Local Includes --------------------------------------------------------------
// Local Defines ---------------------------------------------------------------
// Globals ---------------------------------------------------------------------
static property_info prop_list[] =
{
{ "Item", { B_COUNT_PROPERTIES, 0 }, { B_DIRECT_SPECIFIER, 0 },
@ -305,6 +287,12 @@ BListView::MouseDown(BPoint point)
message->FindInt32("modifiers", &modifiers);
int index = IndexOf(point);
fTrack->drag_start = point;
fTrack->item_index = index;
fTrack->was_selected = index >= 0 ? ItemAt(index)->IsSelected() : false;
fTrack->try_drag = true;
if (index > -1) {
if (fListType == B_MULTIPLE_SELECTION_LIST) {
if (modifiers & B_CONTROL_KEY) {
@ -1165,7 +1153,8 @@ BListView::_InitObject(list_view_type type)
fWidth = Bounds().Width();
fSelectMessage = NULL;
fScrollView = NULL;
fTrack = NULL;
fTrack = new track_data;
fTrack->try_drag = false;
}
// _FixupScrollBar
@ -1393,6 +1382,16 @@ BListView::_DeselectAll(int32 except_from, int32 except_to)
bool
BListView::_TryInitiateDrag(BPoint where)
{
if (!fTrack->try_drag | fTrack->item_index < 0)
return false;
BPoint offset = where - fTrack->drag_start;
float dragDistance = sqrtf(offset.x * offset.x + offset.y * offset.y);
if (dragDistance > 5.0) {
fTrack->try_drag = false;
return InitiateDrag(fTrack->drag_start, fTrack->item_index, fTrack->was_selected);;
}
return false;
}
@ -1410,8 +1409,10 @@ BListView::_CalcFirstSelected(int32 after)
return -1;
}
//------------------------------------------------------------------------------
int32 BListView::_CalcLastSelected(int32 before)
int32
BListView::_CalcLastSelected(int32 before)
{
if (before < 0)
return -1;
@ -1424,13 +1425,17 @@ int32 BListView::_CalcLastSelected(int32 before)
return -1;
}
//------------------------------------------------------------------------------
void BListView::DrawItem(BListItem *item, BRect itemRect, bool complete)
void
BListView::DrawItem(BListItem *item, BRect itemRect, bool complete)
{
item->DrawItem(this, itemRect, complete);
}
//------------------------------------------------------------------------------
bool BListView::DoSwapItems(int32 a, int32 b)
bool
BListView::DoSwapItems(int32 a, int32 b)
{
if (!fList.SwapItems(a, b))
return false;
@ -1447,8 +1452,10 @@ bool BListView::DoSwapItems(int32 a, int32 b)
return true;
}
//------------------------------------------------------------------------------
bool BListView::DoMoveItem(int32 from, int32 to)
bool
BListView::DoMoveItem(int32 from, int32 to)
{
BRect frameFrom = ItemFrame(from);
BRect frameTo = ItemFrame(to);
@ -1465,8 +1472,10 @@ bool BListView::DoMoveItem(int32 from, int32 to)
return true;
}
//------------------------------------------------------------------------------
bool BListView::DoReplaceItem(int32 index, BListItem *item)
bool
BListView::DoReplaceItem(int32 index, BListItem *item)
{
BRect frame = ItemFrame(index);
@ -1480,8 +1489,10 @@ bool BListView::DoReplaceItem(int32 index, BListItem *item)
return true;
}
//------------------------------------------------------------------------------
void BListView::RescanSelection(int32 from, int32 to)
void
BListView::RescanSelection(int32 from, int32 to)
{
if (from > to)
{
@ -1519,19 +1530,16 @@ void BListView::RescanSelection(int32 from, int32 to)
if (ItemAt(i)->IsSelected())
fLastSelected = i;
}
//------------------------------------------------------------------------------
void BListView::DoMouseUp(BPoint where)
{
}
//------------------------------------------------------------------------------
void BListView::DoMouseMoved(BPoint where)
{
}
//------------------------------------------------------------------------------
/*
* $Log $
*
* $Id $
*
*/
void
BListView::DoMouseUp(BPoint where)
{
}
void
BListView::DoMouseMoved(BPoint where)
{
}