--- a/widgetmodel/alfwidgetmodel/src/alflayoutmanagerimpl.cpp Tue Feb 02 00:28:09 2010 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,460 +0,0 @@
-/*
-* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).
-* All rights reserved.
-* This component and the accompanying materials are made available
-* under the terms of "Eclipse Public License v1.0"
-* which accompanies this distribution, and is available
-* at the URL "http://www.eclipse.org/legal/epl-v10.html".
-*
-* Initial Contributors:
-* Nokia Corporation - initial contribution.
-*
-* Contributors:
-*
-* Description: layoutmanager implementation class with focus handling in 1D (next/previous)
-*
-*/
-
-
-#include <alf/ialfwidgetcontrol.h>
-#include "alf/ialfattributeowner.h"
-#include "alf/alfattribute.h"
-#include <alf/alfvisual.h>
-#include <alf/alfenv.h>
-#include "alf/alfwidget.h"
-#include <alf/alfvisualfactory.h>
-#include <alf/alfexceptions.h>
-#include <alf/ialflayoutpreferences.h>
-#include <alf/alfwidgetenvextension.h>
-#include <alf/ialfwidgetfactory.h>
-#include <osn/osnnew.h>
-#include <libc/assert.h>
-#include <alf/attrproperty.h>
-#include "alflayoutmanagerimpl.h"
-
-
-
-namespace Alf
- {
-
-//ifdef to prevent compiler warning: className not used.
-#ifdef ALF_DEBUG_EXCEPTIONS
-static const char* const className = "AlfLayoutManagerImpl";
-#endif
-
-// ======== MEMBER FUNCTIONS ========
-
-// ---------------------------------------------------------------------------
-// layoutmanagerimpl constructor
-// ---------------------------------------------------------------------------
-//
-AlfLayoutManagerImpl::AlfLayoutManagerImpl(
- TAlfLayoutType aLayoutType)
- {
- mLayoutType = aLayoutType;
- }
-
-// ---------------------------------------------------------------------------
-// creates the layout used by the layoutmanager.
-// ---------------------------------------------------------------------------
-//
-AlfLayoutManagerImpl::~AlfLayoutManagerImpl()
- {
- if (mLayout.get())
- {
- CAlfLayout* layout = mLayout.release();
- layout->RemoveAndDestroyAllD();
- }
- }
-
-// ---------------------------------------------------------------------------
-// creates the layout used by the layoutmanager.
-// ---------------------------------------------------------------------------
-//
-void AlfLayoutManagerImpl::createLayout(CAlfWidgetControl& aOwner,
- CAlfLayout* aParentLayout, int aLayoutIndex)
- {
-
- //check parameter validity.
- if (aParentLayout &&
- (aLayoutIndex < 0 ||aLayoutIndex > aParentLayout->Count()))
- {
- ALF_THROW(AlfException, EInvalidArrayIndex, className);
- }
-
- //create layout
- CAlfLayout* layout = 0;
- TRAPD(err, layout = aOwner.AppendLayoutL(mLayoutType, aParentLayout));
-
- if(!layout || err != KErrNone)
- {
- ALF_THROW(AlfVisualException, ECanNotCreateVisual, className);
- }
-
- //reorder, if needed.
- if (aParentLayout && aLayoutIndex != aParentLayout->Count() - 1)
- {
- aParentLayout->Reorder(*layout, aLayoutIndex);
- }
-
- mLayout.reset(layout);
- }
-
-// ---------------------------------------------------------------------------
-// returns the layout used by the layoutmanager.
-// ---------------------------------------------------------------------------
-//
-CAlfLayout& AlfLayoutManagerImpl::getLayout() const
- {
- checkLayout();
- return *mLayout.get();
- }
-
-// ---------------------------------------------------------------------------
-// updates the main layout
-// ---------------------------------------------------------------------------
-//
-void AlfLayoutManagerImpl::updateMainLayout()
- {
- checkLayout();
-
- const IAlfLayoutPreferences* layoutPrefs =
- getLayoutPreferences(getControl(*mLayout.get()));
- if (layoutPrefs)
- {
- TAlfXYMetric prefSize;
- if (layoutPrefs->getPreferredSize(prefSize))
- {
- TAlfRealPoint p(prefSize.iX.iMagnitude,
- prefSize.iY.iMagnitude);
- mLayout->SetSize(p);
- }
- }
- }
-
-// ---------------------------------------------------------------------------
-// notifies the layout manager, that the control's has been
-// removed from the layout.
-// ---------------------------------------------------------------------------
-//
-void AlfLayoutManagerImpl::childRemoved(CAlfWidgetControl* /*aControl*/)
- {
- checkLayout();
- mLayout->UpdateChildrenLayout();
- }
-
-// ---------------------------------------------------------------------------
-// returns the owner control of the layoutmanager.
-// ---------------------------------------------------------------------------
-//
-CAlfWidgetControl& AlfLayoutManagerImpl::owner() const
- {
- checkLayout();
- CAlfWidgetControl* widgetControl = 0;
-
- /* The owner is always a AlfWidgetControl.
- So a static_cast is safe. see AlfLayoutManagerImpl::createLayout() */
- widgetControl = static_cast<CAlfWidgetControl*>(
- &mLayout->Owner());
-
- return *widgetControl;
- }
-
-// ---------------------------------------------------------------------------
-// from IAlfLayoutPreferences
-// Returns the minimum area that this layout manager can occupy by observing
-// the minimum sizes of the child UI elements in the layout
-// ---------------------------------------------------------------------------
-//
-bool AlfLayoutManagerImpl::getMinimumSize( TAlfXYMetric& /*aMinSize*/ ) const
- {
- return false;
- }
-
-// ---------------------------------------------------------------------------
-// from IAlfLayoutPreferences
-// Returns the maximum area that this layout manager can occupy by observing
-// the maximum sizes of the child UI elements in the layout
-// ---------------------------------------------------------------------------
-//
-bool AlfLayoutManagerImpl::getMaximumSize( TAlfXYMetric& /*aMaxSize*/ ) const
- {
- return false;
- }
-
-// ---------------------------------------------------------------------------
-// Combines and returns the preferred sizes of all child UI elements according
-// to the layouting rules.
-// ---------------------------------------------------------------------------
-//
-bool AlfLayoutManagerImpl::getPreferredSize(TAlfXYMetric& /*aPreferredSize*/) const
- {
- return false;
- }
-
-// ---------------------------------------------------------------------------
-// from IAlfLayoutPreferences
-// At the moment doesn't do anything since preferred size is being queried
-// from the child UI elements added to this layout manager.
-// ---------------------------------------------------------------------------
-//
-void AlfLayoutManagerImpl::setPreferredSize( const TAlfXYMetric& /*aPreferredSize*/ )
- {
-
- }
-
-// ---------------------------------------------------------------------------
-// From class IAlfInterfaceBase.
-// Getter for interfaces provided by the element.
-// ---------------------------------------------------------------------------
-//
-IAlfInterfaceBase* AlfLayoutManagerImpl::makeInterface(const IfId& aType)
- {
- UString param(aType.mImplementationId);
- if (param == IAlfLayoutPreferences::type().mImplementationId)
- {
- return static_cast<IAlfLayoutPreferences*>(this);
- }
-
- return 0;
- }
-
-// ---------------------------------------------------------------------------
-// gets control at aIndex position in the layout.
-// ---------------------------------------------------------------------------
-//
-CAlfWidgetControl* AlfLayoutManagerImpl::getControl(int aIndex) const
- {
- CAlfWidgetControl* control = 0;
- CAlfLayout* layout = mLayout.get();
- if (layout)
- {
- CAlfVisual& visual = layout->Visual(aIndex);
- control = getControl(visual);
- }
- return control;
- }
-
-// ---------------------------------------------------------------------------
-// returns the control, which owns the visual
-// ---------------------------------------------------------------------------
-//
-void AlfLayoutManagerImpl::doUpdateChildLayout(CAlfWidgetControl* aControl)
- {
- const IAlfLayoutPreferences* layoutPrefs =
- getLayoutPreferences(aControl);
-
- if (layoutPrefs)
- {
- TAlfXYMetric prefSize;
- if (layoutPrefs->getPreferredSize(prefSize))
- {
- CAlfVisual* v = findRootVisual(aControl);
- if (v)
- {
- v->SetSize(TAlfRealPoint(prefSize.iX.iMagnitude,
- prefSize.iY.iMagnitude));
- }
- }
- }
- }
-
-// ---------------------------------------------------------------------------
-// returns the size of the widget.
-// ---------------------------------------------------------------------------
-//
-bool AlfLayoutManagerImpl::controlRect(CAlfWidgetControl& aControl,
- TAlfRealRect& aRect)
- {
- CAlfVisual* v = findRootVisual(&aControl);
- if (v != 0)
- {
- TAlfRealPoint size(v->Size().Target());
- TAlfRealPoint pos(v->Pos().Target());
- aRect.iTl = pos;
- aRect.iBr.iX = pos.iX + size.iX;
- aRect.iBr.iY = pos.iY + size.iY;
- return true;
- }
-
- return false;
- }
-
-// ---------------------------------------------------------------------------
-// set the size and position to the widget.
-// ---------------------------------------------------------------------------
-//
-void AlfLayoutManagerImpl::setWidgetRect(IAlfWidget& aWidget, const TAlfRealRect &aRect)
- {
- const UString widthName(layoutattributes::KWidth);
- const UString heightName(layoutattributes::KHeight);
- const UString posX(layoutattributes::KPositionX);
- const UString posY(layoutattributes::KPositionY);
-
- IAlfAttributeOwner* attrOwner =
- IAlfInterfaceBase::makeInterface<IAlfAttributeOwner>(&aWidget);
- if (attrOwner)
- {
- auto_ptr<AlfAttributeValueType> w(
- new (EMM) AlfAttributeValueType(aRect.Width()));
- auto_ptr<AlfAttributeValueType> h(
- new (EMM) AlfAttributeValueType(aRect.Height()));
- auto_ptr<AlfAttributeValueType> x(
- new (EMM) AlfAttributeValueType(aRect.iTl.iX));
- auto_ptr<AlfAttributeValueType> y(
- new (EMM) AlfAttributeValueType(aRect.iTl.iY));
- attrOwner->setAttribute(heightName, h.get());
- attrOwner->setAttribute(widthName, w.get());
- attrOwner->setAttribute(posX, x.get());
- attrOwner->setAttribute(posY, y.get());
-
- h.release();
- w.release();
- x.release();
- y.release();
- }
- }
-
-// ---------------------------------------------------------------------------
-// set the position for the widget.
-// ---------------------------------------------------------------------------
-//
-void AlfLayoutManagerImpl::setWidgetPosition(IAlfWidget& aWidget,
- const TAlfRealPoint &aPos)
- {
- const UString posX(layoutattributes::KPositionX);
- const UString posY(layoutattributes::KPositionY);
-
- IAlfAttributeOwner* attrOwner =
- IAlfInterfaceBase::makeInterface<IAlfAttributeOwner>(&aWidget);
- if (attrOwner)
- {
- auto_ptr<AlfAttributeValueType> x(
- new (EMM) AlfAttributeValueType(aPos.iX));
- auto_ptr<AlfAttributeValueType> y(
- new (EMM) AlfAttributeValueType(aPos.iY));
- attrOwner->setAttribute(posX, x.get());
- attrOwner->setAttribute(posY, y.get());
- x.release();
- y.release();
- }
- }
-
-// ---------------------------------------------------------------------------
-// set the size for the widget.
-// ---------------------------------------------------------------------------
-//
-void AlfLayoutManagerImpl::setWidgetSize(IAlfWidget& aWidget, const TAlfRealPoint &aSize)
- {
- const UString widthName(layoutattributes::KWidth);
- const UString heightName(layoutattributes::KHeight);
- IAlfAttributeOwner* attrOwner =
- IAlfInterfaceBase::makeInterface<IAlfAttributeOwner>(&aWidget);
- if (attrOwner)
- {
- auto_ptr<AlfAttributeValueType> w(
- new (EMM) AlfAttributeValueType(aSize.iX));
- auto_ptr<AlfAttributeValueType> h(
- new (EMM) AlfAttributeValueType(aSize.iY));
- attrOwner->setAttribute(heightName, h.get());
- attrOwner->setAttribute(widthName, w.get());
- h.release();
- w.release();
- }
- }
-
-// ---------------------------------------------------------------------------
-// updates widget size and position properties for all the children
-// to correct sizes and positions of the root visuals.
-// ---------------------------------------------------------------------------
-//
-void AlfLayoutManagerImpl::updateAllWidgetRects()
- {
- const int childCount = mLayout->Count();
- TAlfRealRect rect;
- for (int i = 0; i < childCount; i++)
- {
- CAlfWidgetControl* control = getControl(i);
- controlRect(*control, rect); //returns the real rect(of the root visual)
- AlfWidget* widget = control->widget();
- if(widget)
- {
- const char* name = widget->widgetName();
- IAlfWidget* ownerwidget = AlfWidgetEnvExtension::widgetFactory(control->Env()).findWidget(name);
- if (ownerwidget)
- {
- setWidgetRect(*ownerwidget, rect); //sets the rect using widget properties.
- }
- }
- }
-
- }
-
-// ---------------------------------------------------------------------------
-// returns the child visual count
-// ---------------------------------------------------------------------------
-//
-int AlfLayoutManagerImpl::count() const
- {
- return getLayout().Count();
- }
-
-// ---------------------------------------------------------------------------
-// returns the control, which owns the visual
-// ---------------------------------------------------------------------------
-//
-CAlfWidgetControl* AlfLayoutManagerImpl::getControl(CAlfVisual& aVisual) const
- {
- CAlfWidgetControl* temp = 0;
- temp = dynamic_cast<CAlfWidgetControl*>(&aVisual.Owner());
- return temp;
- }
-
-// ---------------------------------------------------------------------------
-// returns the control, which owns the visual
-// ---------------------------------------------------------------------------
-//
-const IAlfLayoutPreferences* AlfLayoutManagerImpl::getLayoutPreferences(
- CAlfWidgetControl* aControl) const
- {
- IAlfLayoutPreferences* layoutPrefs = 0;
- if (aControl)
- {
- layoutPrefs =
- CAlfWidgetControl::makeInterface<IAlfLayoutPreferences>(aControl);
- }
-
- return layoutPrefs;
- }
-
-// ---------------------------------------------------------------------------
-// finds the root visual for a control.
-// ---------------------------------------------------------------------------
-//
-CAlfVisual* AlfLayoutManagerImpl::findRootVisual(CAlfWidgetControl* aControl) const
- {
- CAlfVisual* root = 0;
- if (aControl->VisualCount() > 0)
- {
- //take first visual,
- //go up in layout hierarchy until the control is not owner anymore.
- for (root = &aControl->Visual(0);
- root && root->Layout() && &root->Layout()->Owner() == aControl;
- root = root->Layout()){}
- }
- return root;
- }
-
-// ---------------------------------------------------------------------------
-// throws an exception, if layout is not created.
-// ---------------------------------------------------------------------------
-//
-void AlfLayoutManagerImpl::checkLayout() const
- {
- if (!mLayout.get())
- {
- ALF_THROW(AlfVisualException, EInvalidVisual, className);
- }
- }
-
- } // Alf