Refactor wxButton and wxToggleButton to derive from wxAnyButton.
Introduce wxAnyButton class, a common base class for wxButton and wxToggleButton, allowing to reuse the same implementation for them. This also allows to implement support for bitmaps in wxToggleButton for all platforms and make wxBitmapToggleButton a trivial subclass of it everywhere, similarly to wxBitmapButton and wxButton. Closes #13198. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67931 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
422
src/gtk/anybutton.cpp
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422
src/gtk/anybutton.cpp
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/////////////////////////////////////////////////////////////////////////////
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// Name: src/gtk/anybutton.cpp
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// Purpose:
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// Author: Robert Roebling
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// Created: 1998-05-20 (extracted from button.cpp)
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// Id: $Id: anybutton.cpp 67326 2011-03-28 06:27:49Z PC $
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// Copyright: (c) 1998 Robert Roebling
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// Licence: wxWindows licence
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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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#ifdef wxHAS_ANY_BUTTON
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#ifndef WX_PRECOMP
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#include "wx/anybutton.h"
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#endif
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#include "wx/stockitem.h"
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#include "wx/gtk/private.h"
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// ----------------------------------------------------------------------------
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// GTK callbacks
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// ----------------------------------------------------------------------------
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extern "C"
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{
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static void
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wxgtk_button_enter_callback(GtkWidget *WXUNUSED(widget), wxAnyButton *button)
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{
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if ( button->GTKShouldIgnoreEvent() )
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return;
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button->GTKMouseEnters();
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}
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static void
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wxgtk_button_leave_callback(GtkWidget *WXUNUSED(widget), wxAnyButton *button)
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{
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if ( button->GTKShouldIgnoreEvent() )
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return;
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button->GTKMouseLeaves();
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}
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static void
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wxgtk_button_press_callback(GtkWidget *WXUNUSED(widget), wxAnyButton *button)
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{
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if ( button->GTKShouldIgnoreEvent() )
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return;
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button->GTKPressed();
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}
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static void
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wxgtk_button_released_callback(GtkWidget *WXUNUSED(widget), wxAnyButton *button)
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{
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if ( button->GTKShouldIgnoreEvent() )
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return;
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button->GTKReleased();
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}
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} // extern "C"
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//-----------------------------------------------------------------------------
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// wxAnyButton
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//-----------------------------------------------------------------------------
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bool wxAnyButton::Enable( bool enable )
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{
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if (!base_type::Enable(enable))
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return false;
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gtk_widget_set_sensitive(gtk_bin_get_child(GTK_BIN(m_widget)), enable);
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if (enable)
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GTKFixSensitivity();
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GTKUpdateBitmap();
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return true;
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}
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GdkWindow *wxAnyButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
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{
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return GTK_BUTTON(m_widget)->event_window;
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}
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// static
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wxVisualAttributes
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wxAnyButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
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{
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return GetDefaultAttributesFromGTKWidget(gtk_button_new);
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}
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// ----------------------------------------------------------------------------
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// bitmaps support
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// ----------------------------------------------------------------------------
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void wxAnyButton::GTKMouseEnters()
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{
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m_isCurrent = true;
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GTKUpdateBitmap();
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}
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void wxAnyButton::GTKMouseLeaves()
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{
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m_isCurrent = false;
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GTKUpdateBitmap();
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}
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void wxAnyButton::GTKPressed()
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{
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m_isPressed = true;
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GTKUpdateBitmap();
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}
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void wxAnyButton::GTKReleased()
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{
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m_isPressed = false;
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GTKUpdateBitmap();
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}
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void wxAnyButton::GTKOnFocus(wxFocusEvent& event)
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{
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event.Skip();
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GTKUpdateBitmap();
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}
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wxAnyButton::State wxAnyButton::GTKGetCurrentState() const
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{
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if ( !IsThisEnabled() )
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return m_bitmaps[State_Disabled].IsOk() ? State_Disabled : State_Normal;
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if ( m_isPressed && m_bitmaps[State_Pressed].IsOk() )
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return State_Pressed;
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if ( m_isCurrent && m_bitmaps[State_Current].IsOk() )
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return State_Current;
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if ( HasFocus() && m_bitmaps[State_Focused].IsOk() )
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return State_Focused;
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return State_Normal;
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}
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void wxAnyButton::GTKUpdateBitmap()
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{
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// if we don't show bitmaps at all, there is nothing to update
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if ( m_bitmaps[State_Normal].IsOk() )
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{
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// if we do show them, this will return a state for which we do have a
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// valid bitmap
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State state = GTKGetCurrentState();
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GTKDoShowBitmap(m_bitmaps[state]);
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}
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}
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void wxAnyButton::GTKDoShowBitmap(const wxBitmap& bitmap)
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{
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wxASSERT_MSG( bitmap.IsOk(), "invalid bitmap" );
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GtkWidget *image;
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if ( DontShowLabel() )
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{
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image = gtk_bin_get_child(GTK_BIN(m_widget));
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}
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else // have both label and bitmap
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{
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#ifdef __WXGTK26__
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if ( !gtk_check_version(2,6,0) )
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{
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image = gtk_button_get_image(GTK_BUTTON(m_widget));
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}
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else
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#endif // __WXGTK26__
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{
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// buttons with both label and bitmap are only supported with GTK+
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// 2.6 so far
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//
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// it shouldn't be difficult to implement them ourselves for the
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// previous GTK+ versions by stuffing a container with a label and
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// an image inside GtkButton but there doesn't seem to be much
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// point in doing this for ancient GTK+ versions
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return;
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}
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}
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wxCHECK_RET( image && GTK_IS_IMAGE(image), "must have image widget" );
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gtk_image_set_from_pixbuf(GTK_IMAGE(image), bitmap.GetPixbuf());
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}
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wxBitmap wxAnyButton::DoGetBitmap(State which) const
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{
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return m_bitmaps[which];
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}
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void wxAnyButton::DoSetBitmap(const wxBitmap& bitmap, State which)
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{
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switch ( which )
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{
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case State_Normal:
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if ( DontShowLabel() )
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{
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// we only have the bitmap in this button, never remove it but
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// do invalidate the best size when the bitmap (and presumably
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// its size) changes
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InvalidateBestSize();
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}
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#ifdef __WXGTK26__
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// normal image is special: setting it enables images for the button and
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// resetting it to nothing disables all of them
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else if ( !gtk_check_version(2,6,0) )
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{
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GtkWidget *image = gtk_button_get_image(GTK_BUTTON(m_widget));
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if ( image && !bitmap.IsOk() )
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{
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gtk_container_remove(GTK_CONTAINER(m_widget), image);
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}
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else if ( !image && bitmap.IsOk() )
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{
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image = gtk_image_new();
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gtk_button_set_image(GTK_BUTTON(m_widget), image);
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}
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else // image presence or absence didn't change
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{
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// don't invalidate best size below
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break;
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}
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InvalidateBestSize();
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}
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#endif // GTK+ 2.6+
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break;
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case State_Pressed:
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if ( bitmap.IsOk() )
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{
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if ( !m_bitmaps[which].IsOk() )
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{
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// we need to install the callbacks to be notified about
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// the button pressed state change
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g_signal_connect
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(
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m_widget,
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"pressed",
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G_CALLBACK(wxgtk_button_press_callback),
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this
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);
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g_signal_connect
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(
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m_widget,
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"released",
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G_CALLBACK(wxgtk_button_released_callback),
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this
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);
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}
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}
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else // no valid bitmap
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{
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if ( m_bitmaps[which].IsOk() )
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{
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// we don't need to be notified about the button pressed
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// state changes any more
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g_signal_handlers_disconnect_by_func
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(
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m_widget,
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(gpointer)wxgtk_button_press_callback,
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this
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);
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g_signal_handlers_disconnect_by_func
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(
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m_widget,
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(gpointer)wxgtk_button_released_callback,
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this
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);
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// also make sure we don't remain stuck in pressed state
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if ( m_isPressed )
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{
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m_isPressed = false;
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GTKUpdateBitmap();
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}
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}
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}
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break;
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case State_Current:
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// the logic here is the same as above for State_Pressed: we need
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// to connect the handlers if we must be notified about the changes
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// in the button current state and we disconnect them when/if we
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// don't need them any more
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if ( bitmap.IsOk() )
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{
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if ( !m_bitmaps[which].IsOk() )
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{
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g_signal_connect
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(
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m_widget,
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"enter",
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G_CALLBACK(wxgtk_button_enter_callback),
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this
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);
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g_signal_connect
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(
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m_widget,
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"leave",
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G_CALLBACK(wxgtk_button_leave_callback),
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this
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);
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}
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}
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else // no valid bitmap
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{
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if ( m_bitmaps[which].IsOk() )
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{
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g_signal_handlers_disconnect_by_func
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(
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m_widget,
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(gpointer)wxgtk_button_enter_callback,
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this
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);
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g_signal_handlers_disconnect_by_func
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(
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m_widget,
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(gpointer)wxgtk_button_leave_callback,
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this
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);
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if ( m_isCurrent )
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{
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m_isCurrent = false;
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GTKUpdateBitmap();
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}
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}
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}
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break;
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case State_Focused:
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if ( bitmap.IsOk() )
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{
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Connect(wxEVT_SET_FOCUS,
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wxFocusEventHandler(wxAnyButton::GTKOnFocus));
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Connect(wxEVT_KILL_FOCUS,
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wxFocusEventHandler(wxAnyButton::GTKOnFocus));
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}
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else // no valid focused bitmap
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{
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Disconnect(wxEVT_SET_FOCUS,
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wxFocusEventHandler(wxAnyButton::GTKOnFocus));
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Disconnect(wxEVT_KILL_FOCUS,
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wxFocusEventHandler(wxAnyButton::GTKOnFocus));
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}
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break;
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default:
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// no callbacks to connect/disconnect
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;
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}
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m_bitmaps[which] = bitmap;
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// update the bitmap immediately if necessary, otherwise it will be done
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// when the bitmap for the corresponding state is needed the next time by
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// GTKUpdateBitmap()
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if ( bitmap.IsOk() && which == GTKGetCurrentState() )
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{
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GTKDoShowBitmap(bitmap);
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}
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}
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void wxAnyButton::DoSetBitmapPosition(wxDirection dir)
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{
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#ifdef __WXGTK210__
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if ( !gtk_check_version(2,10,0) )
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{
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GtkPositionType gtkpos;
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switch ( dir )
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{
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default:
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wxFAIL_MSG( "invalid position" );
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// fall through
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case wxLEFT:
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gtkpos = GTK_POS_LEFT;
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break;
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case wxRIGHT:
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gtkpos = GTK_POS_RIGHT;
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break;
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case wxTOP:
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gtkpos = GTK_POS_TOP;
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break;
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case wxBOTTOM:
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gtkpos = GTK_POS_BOTTOM;
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break;
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}
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gtk_button_set_image_position(GTK_BUTTON(m_widget), gtkpos);
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InvalidateBestSize();
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}
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#endif // GTK+ 2.10+
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}
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#endif // wxHAS_ANY_BUTTON
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