4f4c5fcfdf
This is a combination of running clang-tidy with modernize-use-nullptr check for some ports (GTK, X11, OSX) and manual changes to the ports for which it couldn't be used easily (MSW, DFB) and also manually updating the docs. Also replace NULL with null or nullptr in the comments as this is more consistent with the use of nullptr in the code and makes it simpler to grep for the remaining occurrences of NULL itself. And also use null in the assert messages. Only a few occurrences of "NULL" are still left in non-C files, mostly corresponding to unclear comments or string output which it might not be safe to change.
165 lines
5.1 KiB
C++
165 lines
5.1 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: src/gtk/activityindicator.cpp
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// Purpose: wxActivityIndicator implementation for wxGTK.
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// Author: Vadim Zeitlin
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// Created: 2015-03-05
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// Copyright: (c) 2015 Vadim Zeitlin <vadim@wxwidgets.org>
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// for compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#if wxUSE_ACTIVITYINDICATOR && defined(__WXGTK220__)
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#include "wx/activityindicator.h"
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#include "wx/math.h"
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#include "wx/gtk/private/wrapgtk.h"
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// Macro return the specified expression only if GTK+ run time version is less
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// than 2.20 and compiling it only if it is less than 3.0 (which is why this
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// has to be a macro and not a function).
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#if defined(__WXGTK220__) && !defined(__WXGTK3__)
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#define RETURN_IF_NO_GTK_SPINNER(expr) \
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if ( !wx_is_at_least_gtk2(20) ) { return expr; }
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#else
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#define RETURN_IF_NO_GTK_SPINNER(expr)
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#endif
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// ============================================================================
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// implementation
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// ============================================================================
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wxIMPLEMENT_DYNAMIC_CLASS(wxActivityIndicator, wxControl);
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bool
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wxActivityIndicator::Create(wxWindow* parent,
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wxWindowID winid,
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const wxPoint& pos,
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const wxSize& size,
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long style,
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const wxString& name)
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{
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RETURN_IF_NO_GTK_SPINNER(
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wxActivityIndicatorGeneric::Create(parent, winid, pos, size, style, name)
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)
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if ( !PreCreation(parent, pos, size) ||
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!CreateBase(parent, winid, pos, size, style, name) )
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return false;
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m_widget = gtk_spinner_new();
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g_object_ref(m_widget);
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m_parent->DoAddChild(this);
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PostCreation(size);
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return true;
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}
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void wxActivityIndicator::Start()
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{
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RETURN_IF_NO_GTK_SPINNER( wxActivityIndicatorGeneric::Start() )
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wxCHECK_RET( m_widget, wxS("Must be created first") );
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gtk_spinner_start(GTK_SPINNER(m_widget));
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}
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void wxActivityIndicator::Stop()
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{
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RETURN_IF_NO_GTK_SPINNER( wxActivityIndicatorGeneric::Stop() )
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wxCHECK_RET( m_widget, wxS("Must be created first") );
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gtk_spinner_stop(GTK_SPINNER(m_widget));
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}
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bool wxActivityIndicator::IsRunning() const
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{
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RETURN_IF_NO_GTK_SPINNER( wxActivityIndicatorGeneric::IsRunning() )
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if ( !m_widget )
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return false;
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gboolean b;
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g_object_get(m_widget, "active", &b, nullptr);
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return b != 0;
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}
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wxSize wxActivityIndicator::DoGetBestClientSize() const
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{
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RETURN_IF_NO_GTK_SPINNER( wxActivityIndicatorGeneric::DoGetBestClientSize() )
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if ( !m_widget )
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return wxDefaultSize;
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gint w, h;
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#ifdef __WXGTK3__
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// gtk_widget_get_preferred_size() seems to return the size based on the
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// current size of the widget and also always returns 0 if it is hidden,
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// so ask GtkSpinner for its preferred size directly instead of using it.
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GtkWidgetClass* const wc = GTK_WIDGET_GET_CLASS(m_widget);
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// We're not interested in the natural size (and it's the same as minimal
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// one anyhow currently), but we still need a non-null pointer for it.
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gint dummy;
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wc->get_preferred_width(m_widget, &w, &dummy);
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wc->get_preferred_height(m_widget, &h, &dummy);
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#else // GTK+ 2
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// GTK+ 2 doesn't return any valid preferred size for this control, so we
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// use the size of something roughly equivalent to it.
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gtk_icon_size_lookup(GTK_ICON_SIZE_MENU, &w, &h);
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#endif // GTK+ 3/2
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// Adjust for the window variant: note that the default size in GTK+ 3 is
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// really small (12px until ~3.10, 16px since then), so we use this size as
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// the small size and double it for the normal size.
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double factor = 0.;
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switch ( GetWindowVariant() )
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{
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case wxWINDOW_VARIANT_MAX:
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wxFAIL_MSG(wxS("Invalid window variant"));
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wxFALLTHROUGH;
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case wxWINDOW_VARIANT_NORMAL:
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factor = 2.;
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break;
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case wxWINDOW_VARIANT_SMALL:
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factor = 1.;
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break;
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case wxWINDOW_VARIANT_MINI:
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factor = 0.75;
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break;
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case wxWINDOW_VARIANT_LARGE:
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// GTK+ 3.11+ limits GtkSpinner size to twice its minimal size, so
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// the effective factor here is actually just 2, i.e. the same as
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// for the normal size, but use something larger just in case GTK+
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// changes its mind again later.
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factor = 2.5;
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break;
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}
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wxASSERT_MSG( !wxIsSameDouble(factor, 0), wxS("Unknown window variant") );
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return wxSize(wxRound(w*factor), wxRound(h*factor));
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}
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#endif // wxUSE_ACTIVITYINDICATOR
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