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haiku/src/kits/tracker/ViewState.cpp
Stephan Aßmus e70b6d957a * Cleanup in the icon mode stuff. kScaleIconMode is gone. There is simply 
kIconMode and it can have different sizes.
* The "Icon Mode" super menu item is marked, when in icon mode, as well as
  the size item in it's sub menu.
* When switching from mini icon mode or list mode back into icon mode, the
  previous icon size is now restored. This also works when the folder has
  been closed meanwhile. (The on-disk format for view state has changed, so
  your folders will open with default values.)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29971 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-06 18:18:12 +00:00

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/*
Open Tracker License
Terms and Conditions
Copyright (c) 1991-2000, Be Incorporated. All rights reserved.
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 applies to all licensees
and 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 TITLE, MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
BE INCORPORATED 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.
Except as contained in this notice, the name of Be Incorporated shall not be
used in advertising or otherwise to promote the sale, use or other dealings in
this Software without prior written authorization from Be Incorporated.
Tracker(TM), Be(R), BeOS(R), and BeIA(TM) are trademarks or registered trademarks
of Be Incorporated in the United States and other countries. Other brand product
names are registered trademarks or trademarks of their respective holders.
All rights reserved.
*/
#include <Debug.h>
#include <AppDefs.h>
#include <InterfaceDefs.h>
#include "Attributes.h"
#include "Commands.h"
#include "PoseView.h"
#include "Utilities.h"
#include "ViewState.h"
#include <new>
#include <string.h>
#include <stdlib.h>
const char *kColumnVersionName = "BColumn:version";
const char *kColumnTitleName = "BColumn:fTitle";
const char *kColumnOffsetName = "BColumn:fOffset";
const char *kColumnWidthName = "BColumn:fWidth";
const char *kColumnAlignmentName = "BColumn:fAlignment";
const char *kColumnAttrName = "BColumn:fAttrName";
const char *kColumnAttrHashName = "BColumn:fAttrHash";
const char *kColumnAttrTypeName = "BColumn:fAttrType";
const char *kColumnDisplayAsName = "BColumn:fDisplayAs";
const char *kColumnStatFieldName = "BColumn:fStatField";
const char *kColumnEditableName = "BColumn:fEditable";
const char *kViewStateVersionName = "ViewState:version";
const char *kViewStateViewModeName = "ViewState:fViewMode";
const char *kViewStateLastIconModeName = "ViewState:fLastIconMode";
const char *kViewStateListOriginName = "ViewState:fListOrigin";
const char *kViewStateIconOriginName = "ViewState:fIconOrigin";
const char *kViewStatePrimarySortAttrName = "ViewState:fPrimarySortAttr";
const char *kViewStatePrimarySortTypeName = "ViewState:fPrimarySortType";
const char *kViewStateSecondarySortAttrName = "ViewState:fSecondarySortAttr";
const char *kViewStateSecondarySortTypeName = "ViewState:fSecondarySortType";
const char *kViewStateReverseSortName = "ViewState:fReverseSort";
const char *kViewStateIconSizeName = "ViewState:fIconSize";
const char *kViewStateLastIconSizeName = "ViewState:fLastIconSize";
static const int32 kColumnStateMinArchiveVersion = 21;
// bump version when layout changes
BColumn::BColumn(const char *title, float offset, float width,
alignment align, const char *attributeName, uint32 attrType,
const char* displayAs, bool statField, bool editable)
{
_Init(title, offset, width, align, attributeName, attrType, displayAs,
statField, editable);
}
BColumn::BColumn(const char *title, float offset, float width,
alignment align, const char *attributeName, uint32 attrType,
bool statField, bool editable)
{
_Init(title, offset, width, align, attributeName, attrType, NULL,
statField, editable);
}
BColumn::~BColumn()
{
}
BColumn::BColumn(BMallocIO *stream, int32 version, bool endianSwap)
{
StringFromStream(&fTitle, stream, endianSwap);
stream->Read(&fOffset, sizeof(float));
stream->Read(&fWidth, sizeof(float));
stream->Read(&fAlignment, sizeof(alignment));
StringFromStream(&fAttrName, stream, endianSwap);
stream->Read(&fAttrHash, sizeof(uint32));
stream->Read(&fAttrType, sizeof(uint32));
stream->Read(&fStatField, sizeof(bool));
stream->Read(&fEditable, sizeof(bool));
if (version == kColumnStateArchiveVersion)
StringFromStream(&fDisplayAs, stream, endianSwap);
if (endianSwap) {
PRINT(("endian swapping column\n"));
fOffset = B_SWAP_FLOAT(fOffset);
fWidth = B_SWAP_FLOAT(fWidth);
STATIC_ASSERT(sizeof(BColumn::fAlignment) == sizeof(int32));
fAlignment = (alignment)B_SWAP_INT32(fAlignment);
fAttrHash = B_SWAP_INT32(fAttrHash);
fAttrType = B_SWAP_INT32(fAttrType);
}
}
BColumn::BColumn(const BMessage &message, int32 index)
{
message.FindString(kColumnTitleName, index, &fTitle);
message.FindFloat(kColumnOffsetName, index, &fOffset);
message.FindFloat(kColumnWidthName, index, &fWidth);
message.FindInt32(kColumnAlignmentName, index, (int32 *)&fAlignment);
message.FindString(kColumnAttrName, index, &fAttrName);
message.FindInt32(kColumnAttrHashName, index, (int32 *)&fAttrHash);
message.FindInt32(kColumnAttrTypeName, index, (int32 *)&fAttrType);
message.FindString(kColumnDisplayAsName, index, &fDisplayAs);
message.FindBool(kColumnStatFieldName, index, &fStatField);
message.FindBool(kColumnEditableName, index, &fEditable);
}
void
BColumn::_Init(const char *title, float offset, float width,
alignment align, const char *attributeName, uint32 attrType,
const char* displayAs, bool statField, bool editable)
{
fTitle = title;
fAttrName = attributeName;
fDisplayAs = displayAs;
fOffset = offset;
fWidth = width;
fAlignment = align;
fAttrHash = AttrHashString(attributeName, attrType);
fAttrType = attrType;
fStatField = statField;
fEditable = editable;
}
BColumn *
BColumn::InstantiateFromStream(BMallocIO *stream, bool endianSwap)
{
// compare stream header in canonical form
// we can't use ValidateStream(), as we preserve backwards compatibility
int32 version;
uint32 key;
if (stream->Read(&key, sizeof(uint32)) <= 0
|| stream->Read(&version, sizeof(int32)) <=0)
return 0;
if (endianSwap) {
key = SwapUInt32(key);
version = SwapInt32(version);
}
if (key != AttrHashString("BColumn", B_OBJECT_TYPE)
|| version < kColumnStateMinArchiveVersion)
return 0;
// PRINT(("instantiating column, %s\n", endianSwap ? "endian swapping," : ""));
return _Sanitize(new (std::nothrow) BColumn(stream, version, endianSwap));
}
BColumn *
BColumn::InstantiateFromMessage(const BMessage &message, int32 index)
{
int32 version = kColumnStateArchiveVersion;
int32 messageVersion;
if (message.FindInt32(kColumnVersionName, index, &messageVersion) != B_OK)
return NULL;
if (version != messageVersion)
return NULL;
return _Sanitize(new (std::nothrow) BColumn(message, index));
}
void
BColumn::ArchiveToStream(BMallocIO *stream) const
{
// write class identifier and version info
uint32 key = AttrHashString("BColumn", B_OBJECT_TYPE);
stream->Write(&key, sizeof(uint32));
int32 version = kColumnStateArchiveVersion;
stream->Write(&version, sizeof(int32));
// PRINT(("ArchiveToStream column, key %x, version %d\n", key, version));
StringToStream(&fTitle, stream);
stream->Write(&fOffset, sizeof(float));
stream->Write(&fWidth, sizeof(float));
stream->Write(&fAlignment, sizeof(alignment));
StringToStream(&fAttrName, stream);
stream->Write(&fAttrHash, sizeof(uint32));
stream->Write(&fAttrType, sizeof(uint32));
stream->Write(&fStatField, sizeof(bool));
stream->Write(&fEditable, sizeof(bool));
StringToStream(&fDisplayAs, stream);
}
void
BColumn::ArchiveToMessage(BMessage &message) const
{
message.AddInt32(kColumnVersionName, kColumnStateArchiveVersion);
message.AddString(kColumnTitleName, fTitle);
message.AddFloat(kColumnOffsetName, fOffset);
message.AddFloat(kColumnWidthName, fWidth);
message.AddInt32(kColumnAlignmentName, fAlignment);
message.AddString(kColumnAttrName, fAttrName);
message.AddInt32(kColumnAttrHashName, static_cast<int32>(fAttrHash));
message.AddInt32(kColumnAttrTypeName, static_cast<int32>(fAttrType));
if (fDisplayAs.Length() > 0)
message.AddString(kColumnDisplayAsName, fDisplayAs.String());
message.AddBool(kColumnStatFieldName, fStatField);
message.AddBool(kColumnEditableName, fEditable);
}
BColumn *
BColumn::_Sanitize(BColumn *column)
{
if (column == NULL)
return NULL;
// sanity-check the resulting column
if (column->fTitle.Length() > 500
|| column->fOffset < 0
|| column->fOffset > 10000
|| column->fWidth < 0
|| column->fWidth > 10000
|| (int32)column->fAlignment < B_ALIGN_LEFT
|| (int32)column->fAlignment > B_ALIGN_CENTER
|| column->fAttrName.Length() > 500) {
PRINT(("column data not valid\n"));
delete column;
return NULL;
}
#if DEBUG
// TODO: Whatever this is supposed to mean, fix it.
// else if (endianSwap)
// PRINT(("Instantiated foreign column ok\n"));
#endif
return column;
}
// #pragma mark -
BViewState::BViewState()
{
fViewMode = kListMode;
fLastIconMode = 0;
fIconSize = 32;
fLastIconSize = 32;
fListOrigin.Set(0, 0);
fIconOrigin.Set(0, 0);
fPrimarySortAttr = AttrHashString(kAttrStatName, B_STRING_TYPE);
fPrimarySortType = B_STRING_TYPE;
fSecondarySortAttr = 0;
fSecondarySortType = 0;
fReverseSort = false;
_StorePreviousState();
}
BViewState::BViewState(BMallocIO *stream, bool endianSwap)
{
stream->Read(&fViewMode, sizeof(uint32));
stream->Read(&fLastIconMode, sizeof(uint32));
stream->Read(&fListOrigin, sizeof(BPoint));
stream->Read(&fIconOrigin, sizeof(BPoint));
stream->Read(&fPrimarySortAttr, sizeof(uint32));
stream->Read(&fPrimarySortType, sizeof(uint32));
stream->Read(&fSecondarySortAttr, sizeof(uint32));
stream->Read(&fSecondarySortType, sizeof(uint32));
stream->Read(&fReverseSort, sizeof(bool));
stream->Read(&fIconSize, sizeof(uint32));
stream->Read(&fLastIconSize, sizeof(uint32));
if (endianSwap) {
PRINT(("endian swapping view state\n"));
fViewMode = B_SWAP_INT32(fViewMode);
fLastIconMode = B_SWAP_INT32(fLastIconMode);
fIconSize = B_SWAP_INT32(fIconSize);
fLastIconSize = B_SWAP_INT32(fLastIconSize);
swap_data(B_POINT_TYPE, &fListOrigin,
sizeof(fListOrigin), B_SWAP_ALWAYS);
swap_data(B_POINT_TYPE, &fIconOrigin,
sizeof(fIconOrigin), B_SWAP_ALWAYS);
fPrimarySortAttr = B_SWAP_INT32(fPrimarySortAttr);
fSecondarySortAttr = B_SWAP_INT32(fSecondarySortAttr);
fPrimarySortType = B_SWAP_INT32(fPrimarySortType);
fSecondarySortType = B_SWAP_INT32(fSecondarySortType);
}
_StorePreviousState();
_Sanitize(this, true);
}
BViewState::BViewState(const BMessage &message)
{
message.FindInt32(kViewStateViewModeName, (int32 *)&fViewMode);
message.FindInt32(kViewStateLastIconModeName, (int32 *)&fLastIconMode);
message.FindPoint(kViewStateListOriginName, &fListOrigin);
message.FindPoint(kViewStateIconOriginName, &fIconOrigin);
message.FindInt32(kViewStatePrimarySortAttrName,
(int32 *)&fPrimarySortAttr);
message.FindInt32(kViewStatePrimarySortTypeName,
(int32 *)&fPrimarySortType);
message.FindInt32(kViewStateSecondarySortAttrName,
(int32 *)&fSecondarySortAttr);
message.FindInt32(kViewStateSecondarySortTypeName,
(int32 *)&fSecondarySortType);
message.FindBool(kViewStateReverseSortName, &fReverseSort);
_StorePreviousState();
_Sanitize(this, true);
}
void
BViewState::ArchiveToStream(BMallocIO *stream) const
{
// write class identifier and verison info
uint32 key = AttrHashString("BViewState", B_OBJECT_TYPE);
stream->Write(&key, sizeof(key));
int32 version = kViewStateArchiveVersion;
stream->Write(&version, sizeof(version));
stream->Write(&fViewMode, sizeof(uint32));
stream->Write(&fLastIconMode, sizeof(uint32));
stream->Write(&fListOrigin, sizeof(BPoint));
stream->Write(&fIconOrigin, sizeof(BPoint));
stream->Write(&fPrimarySortAttr, sizeof(uint32));
stream->Write(&fPrimarySortType, sizeof(uint32));
stream->Write(&fSecondarySortAttr, sizeof(uint32));
stream->Write(&fSecondarySortType, sizeof(uint32));
stream->Write(&fReverseSort, sizeof(bool));
stream->Write(&fIconSize, sizeof(uint32));
stream->Write(&fLastIconSize, sizeof(uint32));
}
void
BViewState::ArchiveToMessage(BMessage &message) const
{
message.AddInt32(kViewStateVersionName, kViewStateArchiveVersion);
message.AddInt32(kViewStateViewModeName, static_cast<int32>(fViewMode));
message.AddInt32(kViewStateLastIconModeName,
static_cast<int32>(fLastIconMode));
message.AddPoint(kViewStateListOriginName, fListOrigin);
message.AddPoint(kViewStateIconOriginName, fIconOrigin);
message.AddInt32(kViewStatePrimarySortAttrName,
static_cast<int32>(fPrimarySortAttr));
message.AddInt32(kViewStatePrimarySortTypeName,
static_cast<int32>(fPrimarySortType));
message.AddInt32(kViewStateSecondarySortAttrName,
static_cast<int32>(fSecondarySortAttr));
message.AddInt32(kViewStateSecondarySortTypeName,
static_cast<int32>(fSecondarySortType));
message.AddBool(kViewStateReverseSortName, fReverseSort);
message.AddInt32(kViewStateIconSizeName, static_cast<int32>(fIconSize));
message.AddInt32(kViewStateLastIconSizeName,
static_cast<int32>(fLastIconSize));
}
BViewState *
BViewState::InstantiateFromStream(BMallocIO *stream, bool endianSwap)
{
// compare stream header in canonical form
uint32 key = AttrHashString("BViewState", B_OBJECT_TYPE);
int32 version = kViewStateArchiveVersion;
if (endianSwap) {
key = SwapUInt32(key);
version = SwapInt32(version);
}
if (!ValidateStream(stream, key, version))
return NULL;
return _Sanitize(new (std::nothrow) BViewState(stream, endianSwap));
}
BViewState *
BViewState::InstantiateFromMessage(const BMessage &message)
{
int32 version = kViewStateArchiveVersion;
int32 messageVersion;
if (message.FindInt32(kViewStateVersionName, &messageVersion) != B_OK)
return NULL;
if (version != messageVersion)
return NULL;
return _Sanitize(new (std::nothrow) BViewState(message));
}
void
BViewState::_StorePreviousState()
{
fPreviousViewMode = fViewMode;
fPreviousLastIconMode = fLastIconMode;
fPreviousIconSize = fIconSize;
fPreviousLastIconSize = fLastIconSize;
fPreviousListOrigin = fListOrigin;
fPreviousIconOrigin = fIconOrigin;
fPreviousPrimarySortAttr = fPrimarySortAttr;
fPreviousSecondarySortAttr = fSecondarySortAttr;
fPreviousPrimarySortType = fPrimarySortType;
fPreviousSecondarySortType = fSecondarySortType;
fPreviousReverseSort = fReverseSort;
}
BViewState *
BViewState::_Sanitize(BViewState *state, bool fixOnly)
{
if (state == NULL)
return NULL;
if (state->fViewMode == kListMode) {
if (state->fListOrigin.x < 0)
state->fListOrigin.x = 0;
if (state->fListOrigin.y < 0)
state->fListOrigin.y = 0;
}
if (state->fIconSize < 16)
state->fIconSize = 16;
if (state->fIconSize > 64)
state->fIconSize = 64;
if (state->fLastIconSize < 16)
state->fLastIconSize = 16;
if (state->fLastIconSize > 64)
state->fLastIconSize = 64;
if (fixOnly)
return state;
// do a sanity check here
if ((state->fViewMode != kListMode
&& state->fViewMode != kIconMode
&& state->fViewMode != kMiniIconMode
&& state->fViewMode != 0)
|| (state->fLastIconMode != kListMode
&& state->fLastIconMode != kIconMode
&& state->fLastIconMode != kMiniIconMode
&& state->fLastIconMode != 0)) {
PRINT(("Bad data instantiating ViewState, view mode %x, lastIconMode %x\n",
state->fViewMode, state->fLastIconMode));
delete state;
return NULL;
}
#if DEBUG
// TODO: Whatever this is supposed to mean, fix it.
// else if (endianSwap)
// PRINT(("Instantiated foreign view state ok\n"));
#endif
return state;
}
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