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202 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <vcl/builderfactory.hxx>
#include <vcl/layout.hxx>
#include <sfx2/viewfrm.hxx>
#include "PriorityHBox.hxx"
namespace
{
bool lcl_comparePriority(const vcl::IPrioritable* a, const vcl::IPrioritable* b)
{
return a->GetPriority() < b->GetPriority();
}
}
PriorityHBox::PriorityHBox(vcl::Window *pParent)
: VclHBox(pParent)
, m_bInitialized(false)
{
}
PriorityHBox::~PriorityHBox()
{
disposeOnce();
}
void PriorityHBox::Initialize()
{
m_bInitialized = true;
GetChildrenWithPriorities();
SetSizeFromParent();
}
int PriorityHBox::GetHiddenCount() const
{
int nCount = 0;
for (auto pWindow : m_aSortedChildren)
if (pWindow->IsHidden())
nCount++;
return nCount;
}
void PriorityHBox::SetSizeFromParent()
{
vcl::Window* pParent = GetParent();
if (pParent)
{
Size aParentSize = pParent->GetSizePixel();
SetSizePixel(Size(aParentSize.getWidth(), aParentSize.getHeight()));
}
}
Size PriorityHBox::calculateRequisition() const
{
if (!m_bInitialized)
{
return VclHBox::calculateRequisition();
}
sal_uInt16 nVisibleChildren = 0;
Size aSize;
for (vcl::Window *pChild = GetWindow(GetWindowType::FirstChild); pChild; pChild = pChild->GetWindow(GetWindowType::Next))
{
if (!pChild->IsVisible())
continue;
++nVisibleChildren;
Size aChildSize = getLayoutRequisition(*pChild);
bool bAllwaysExpanded = true;
vcl::IPrioritable* pPrioritable = dynamic_cast<vcl::IPrioritable*>(pChild);
if (pPrioritable && pPrioritable->GetPriority() != VCL_PRIORITY_DEFAULT)
bAllwaysExpanded = false;
if (bAllwaysExpanded)
{
long nPrimaryDimension = getPrimaryDimension(aChildSize);
nPrimaryDimension += pChild->get_padding() * 2;
setPrimaryDimension(aChildSize, nPrimaryDimension);
}
else
setPrimaryDimension(aChildSize, 0);
accumulateMaxes(aChildSize, aSize);
}
return finalizeMaxes(aSize, nVisibleChildren);
}
void PriorityHBox::Resize()
{
if (!m_bInitialized && SfxViewFrame::Current())
Initialize();
if (!m_bInitialized)
{
return VclHBox::Resize();
}
long nWidth = GetSizePixel().Width();
long nCurrentWidth = VclHBox::calculateRequisition().getWidth();
// Hide lower priority controls
for (vcl::IPrioritable* pPrioritable : m_aSortedChildren)
{
if (nCurrentWidth <= nWidth)
break;
vcl::Window* pWindow = dynamic_cast<vcl::Window*>(pPrioritable);
if (pWindow && pWindow->GetParent() == this)
{
nCurrentWidth -= pWindow->GetOutputWidthPixel() + get_spacing();
pWindow->Show();
pPrioritable->HideContent();
nCurrentWidth += pWindow->GetOutputWidthPixel() + get_spacing();
}
}
auto pChildR = m_aSortedChildren.rbegin();
// Show higher priority controls if we already have enough space
while (pChildR != m_aSortedChildren.rend())
{
vcl::Window* pWindow = dynamic_cast<vcl::Window*>(*pChildR);
vcl::IPrioritable* pPrioritable = *pChildR;
if(pWindow->GetParent() != this)<--- Null pointer dereference
{
pChildR++;
continue;
}
if (pWindow)<--- Assuming that condition 'if(pWindow)' is not redundant
{
nCurrentWidth -= pWindow->GetOutputWidthPixel() + get_spacing();
pWindow->Show();
pPrioritable->ShowContent();
nCurrentWidth += getLayoutRequisition(*pWindow).Width() + get_spacing();
if (nCurrentWidth > nWidth)
{
pPrioritable->HideContent();
break;
}
}
pChildR++;
}
VclHBox::Resize();
}
void PriorityHBox::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rRect)
{
if (!m_bInitialized && SfxViewFrame::Current())
Initialize();
VclHBox::Paint(rRenderContext, rRect);
}
void PriorityHBox::GetChildrenWithPriorities()
{
for (sal_uInt16 i = 0; i < GetChildCount(); ++i)
{
vcl::Window* pChild = GetChild(i);
// Add only containers which have explicitly assigned priority.
vcl::IPrioritable* pPrioritable = dynamic_cast<vcl::IPrioritable*>(pChild);
if (pPrioritable && pPrioritable->GetPriority() != VCL_PRIORITY_DEFAULT)
m_aSortedChildren.push_back(pPrioritable);
}
if (m_aSortedChildren.empty())
m_bInitialized = false;
std::sort(m_aSortedChildren.begin(), m_aSortedChildren.end(), lcl_comparePriority);
}
VCL_BUILDER_FACTORY(PriorityHBox)
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|