vcl/inc/unx/gtk/gtkobject.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   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  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <tools/solar.h>
  23 #include <vcl/sysdata.hxx>
  24 #include <salobj.hxx>
  25 #include <unx/gtk/gtkframe.hxx>
  26
  27 class GtkSalObjectBase : public SalObject
  28 {
  29 protected:
  30     SystemEnvData       m_aSystemData;
  31     GtkWidget*          m_pSocket;
  32     GtkSalFrame*        m_pParent;
  33     cairo_region_t*     m_pRegion;
  34
  35     void Init();
  36
  37 public:
  38     GtkSalObjectBase(GtkSalFrame* pParent);
  39     virtual ~GtkSalObjectBase() override;
  40
  41     virtual void                    BeginSetClipRegion( sal_uInt32 nRects ) override;
  42     virtual void                    UnionClipRegion( tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight ) override;
  43
  44     virtual void                    SetForwardKey( bool bEnable ) override;
  45
  46     virtual const SystemEnvData&    GetSystemData() const override;
  47
  48     virtual Size                    GetOptimalSize() const override;
  49
  50 private:
  51     // signals
  52 #if !GTK_CHECK_VERSION(4, 0, 0)
  53     static gboolean     signalButton( GtkWidget*, GdkEventButton*, gpointer );
  54     static gboolean     signalFocus( GtkWidget*, GdkEventFocus*, gpointer );
  55 #endif
  56 };
  57
  58 // this attempts to clip the hosted native window using gdk_window_shape_combine_region
  59 class GtkSalObject final : public GtkSalObjectBase
  60 {
  61     // signals
  62     static void         signalDestroy( GtkWidget*, gpointer );
  63
  64 public:
  65     GtkSalObject(GtkSalFrame* pParent, bool bShow);
  66     virtual ~GtkSalObject() override;
  67
  68     // override all pure virtual methods
  69     virtual void                    ResetClipRegion() override;
  70     virtual void                    EndSetClipRegion() override;
  71
  72     virtual void                    SetPosSize( tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight ) override;
  73     virtual void                    Show( bool bVisible ) override;
  74     virtual void                    Reparent(SalFrame* pFrame) override;
  75 };
  76
  77 // this attempts to clip the hosted native GtkWidget by using a GtkScrolledWindow as a viewport
  78 // only a rectangular area is going to work
  79 class GtkSalObjectWidgetClip final : public GtkSalObjectBase
  80 {
  81     tools::Rectangle m_aRect;
  82     tools::Rectangle m_aClipRect;
  83     GtkWidget* m_pScrolledWindow;
  84     GtkWidget* m_pViewPort;
  85     GtkCssProvider* m_pBgCssProvider;
  86
  87     // signals
  88 #if !GTK_CHECK_VERSION(4, 0, 0)
  89     static gboolean     signalScroll(GtkWidget*, GdkEvent*, gpointer);
  90 #else
  91     static gboolean     signalScroll(GtkEventControllerScroll* pController, double delta_x, double delta_y, gpointer object);
  92 #endif
  93     static void         signalDestroy( GtkWidget*, gpointer );
  94
  95 #if !GTK_CHECK_VERSION(4, 0, 0)
  96     bool signal_scroll(GtkWidget* pScrolledWindow, GdkEvent* pEvent);
  97 #else
  98     bool signal_scroll(GtkEventControllerScroll* pController, double delta_x, double delta_y);
  99 #endif
 100
 101     void ApplyClipRegion();
 102
 103     void SetViewPortBackground();
 104
 105     DECL_LINK(SettingsChangedHdl, VclWindowEvent&, void);
 106
 107 public:
 108     GtkSalObjectWidgetClip(GtkSalFrame* pParent, bool bShow);
 109     virtual ~GtkSalObjectWidgetClip() override;
 110
 111     // override all pure virtual methods
 112     virtual void                    ResetClipRegion() override;
 113     virtual void                    EndSetClipRegion() override;
 114
 115     virtual void                    SetPosSize( tools::Long nX, tools::Long nY, tools::Long nWidth, tools::Long nHeight ) override;
 116     virtual void                    Show( bool bVisible ) override;
 117     virtual void                    Reparent(SalFrame* pFrame) override;
 118 };
 119
 120 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */