vcl/source/control/InterimItemWindow.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <vcl/InterimItemWindow.hxx>
  11 #include <vcl/layout.hxx>
  12 #include <salobj.hxx>
  13 #include <window.h>
  14
  15 InterimItemWindow::InterimItemWindow(vcl::Window* pParent, const OUString& rUIXMLDescription,
  16                                      const OUString& rID, bool bAllowCycleFocusOut,
  17                                      sal_uInt64 nLOKWindowId)
  18     : Control(pParent, WB_TABSTOP)
  19     , m_pWidget(nullptr) // inheritors are expected to call InitControlBase
  20     , m_aLayoutIdle("InterimItemWindow m_aLayoutIdle")
  21 {
  22     m_aLayoutIdle.SetPriority(TaskPriority::RESIZE);
  23     m_aLayoutIdle.SetInvokeHandler(LINK(this, InterimItemWindow, DoLayout));
  24
  25     m_xVclContentArea = VclPtr<VclVBox>::Create(this);
  26     m_xVclContentArea->Show();
  27     m_xBuilder = Application::CreateInterimBuilder(m_xVclContentArea, rUIXMLDescription,
  28                                                    bAllowCycleFocusOut, nLOKWindowId);
  29     m_xContainer = m_xBuilder->weld_container(rID);
  30
  31     SetBackground();
  32     SetPaintTransparent(true);
  33 }
  34
  35 void InterimItemWindow::StateChanged(StateChangedType nStateChange)
  36 {
  37     if (nStateChange == StateChangedType::Enable)
  38         m_xContainer->set_sensitive(IsEnabled());
  39     Control::StateChanged(nStateChange);
  40 }
  41
  42 InterimItemWindow::~InterimItemWindow() { disposeOnce(); }
  43
  44 void InterimItemWindow::dispose()
  45 {
  46     m_pWidget = nullptr;
  47
  48     m_xContainer.reset();
  49     m_xBuilder.reset();
  50     m_xVclContentArea.disposeAndClear();
  51
  52     m_aLayoutIdle.Stop();
  53
  54     Control::dispose();
  55 }
  56
  57 void InterimItemWindow::StartIdleLayout()
  58 {
  59     if (!m_xVclContentArea)
  60         return;
  61     if (m_aLayoutIdle.IsActive())
  62         return;
  63     m_aLayoutIdle.Start();
  64 }
  65
  66 void InterimItemWindow::queue_resize(StateChangedType eReason)
  67 {
  68     Control::queue_resize(eReason);
  69     StartIdleLayout();
  70 }
  71
  72 void InterimItemWindow::Resize() { Layout(); }
  73
  74 void InterimItemWindow::UnclipVisibleSysObj()
  75 {
  76     if (!IsVisible())
  77         return;
  78     vcl::Window* pChild = m_xVclContentArea->GetWindow(GetWindowType::FirstChild);
  79     if (!pChild)
  80         return;
  81     WindowImpl* pWindowImpl = pChild->ImplGetWindowImpl();
  82     if (!pWindowImpl)
  83         return;
  84     if (!pWindowImpl->mpSysObj)
  85         return;
  86     pWindowImpl->mpSysObj->Show(true);
  87     pWindowImpl->mpSysObj->ResetClipRegion();
  88     // flag that sysobj clip is dirty and needs to be recalculated on next use
  89     pWindowImpl->mbInitWinClipRegion = true;
  90 }
  91
  92 IMPL_LINK_NOARG(InterimItemWindow, DoLayout, Timer*, void) { Layout(); }
  93
  94 void InterimItemWindow::Layout()
  95 {
  96     m_aLayoutIdle.Stop();
  97     vcl::Window* pChild = GetWindow(GetWindowType::FirstChild);
  98     assert(pChild);
  99     VclContainer::setLayoutAllocation(*pChild, Point(0, 0), GetSizePixel());
 100     Control::Resize();
 101 }
 102
 103 Size InterimItemWindow::GetOptimalSize() const
 104 {
 105     return VclContainer::getLayoutRequisition(*GetWindow(GetWindowType::FirstChild));
 106 }
 107
 108 void InterimItemWindow::InvalidateChildSizeCache()
 109 {
 110     // find the bottom vcl::Window of the hierarchy and queue_resize on that
 111     // one will invalidate all the size caches upwards
 112     vcl::Window* pChild = GetWindow(GetWindowType::FirstChild);
 113     while (true)
 114     {
 115         vcl::Window* pSubChild = pChild->GetWindow(GetWindowType::FirstChild);
 116         if (!pSubChild)
 117             break;
 118         pChild = pSubChild;
 119     }
 120     pChild->queue_resize();
 121 }
 122
 123 bool InterimItemWindow::ControlHasFocus() const
 124 {
 125     if (!m_pWidget)
 126         return false;
 127     return m_pWidget->has_focus();
 128 }
 129
 130 void InterimItemWindow::InitControlBase(weld::Widget* pWidget) { m_pWidget = pWidget; }
 131
 132 void InterimItemWindow::GetFocus()
 133 {
 134     if (m_pWidget)
 135         m_pWidget->grab_focus();
 136
 137     /* let toolbox know this item window has focus so it updates its mnHighItemId to point
 138        to this toolitem in case tab means to move to another toolitem within
 139        the toolbox
 140     */
 141     vcl::Window* pToolBox = GetParent();
 142     NotifyEvent aNEvt(NotifyEventType::GETFOCUS, this);
 143     pToolBox->EventNotify(aNEvt);
 144 }
 145
 146 bool InterimItemWindow::ChildKeyInput(const KeyEvent& rKEvt)
 147 {
 148     sal_uInt16 nCode = rKEvt.GetKeyCode().GetCode();
 149     if (nCode != KEY_TAB)
 150         return false;
 151
 152     /* if the native widget has focus, then no vcl window has focus.
 153
 154        We want to grab focus to this vcl widget so that pressing tab will traverse
 155        to the next vcl widget.
 156
 157        But just using GrabFocus will, because no vcl widget has focus, trigger
 158        bringing the toplevel to front with the expectation that a suitable widget
 159        will be picked for focus when that happen, which is no use to us here.
 160
 161        SetFakeFocus avoids the problem, allowing GrabFocus to do the expected thing
 162        then sending the Tab to our parent will do the right traversal
 163     */
 164     SetFakeFocus(true);
 165     GrabFocus();
 166
 167     /* now give focus to our toolbox parent */
 168     vcl::Window* pToolBox = GetParent();
 169     pToolBox->GrabFocus();
 170
 171     /* let toolbox know this item window has focus so it updates its mnHighItemId to point
 172        to this toolitem in case tab means to move to another toolitem within
 173        the toolbox
 174     */
 175     NotifyEvent aNEvt(NotifyEventType::GETFOCUS, this);
 176     pToolBox->EventNotify(aNEvt);
 177
 178     /* send parent the tab */
 179     pToolBox->KeyInput(rKEvt);
 180
 181     return true;
 182 }
 183
 184 void InterimItemWindow::Draw(OutputDevice* pDevice, const Point& rPos,
 185                              SystemTextColorFlags /*nFlags*/)
 186 {
 187     m_xContainer->draw(*pDevice, rPos, GetSizePixel());
 188 }
 189
 190 void InterimItemWindow::ImplPaintToDevice(::OutputDevice* pTargetOutDev, const Point& rPos)
 191 {
 192     Draw(pTargetOutDev, rPos, SystemTextColorFlags::NONE);
 193 }
 194
 195 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */