free old resources in DoLoad(), apparently fixes memory leaks with gstreamer 0.10...

[wxWidgets.git] / src / gtk / button.cpp

diff --git a/src/gtk/button.cpp b/src/gtk/button.cpp
index 52c4e2d4b9787992f2a2db0868616a03c13af88c..35e0b4f53712a2e9aec2134106ba835bbff4f4d7 100644 (file)
--- a/src/gtk/button.cpp
+++ b/src/gtk/button.cpp
@@ -1,19 +1,28 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        button.cpp
+// Name:        src/gtk/button.cpp

 // Purpose:
 // Author:      Robert Roebling
 // Purpose:
 // Author:      Robert Roebling

-// Created:     01/02/97
-// Id:
-// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
-// Licence:    wxWindows licence
+// Id:          $Id$
+// Copyright:   (c) 1998 Robert Roebling
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "button.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#if wxUSE_BUTTON

 
 #include "wx/button.h"
 
 
 #include "wx/button.h"
 

+#ifndef WX_PRECOMP
+    #include "wx/toplevel.h"
+#endif
+
+#include "wx/stockitem.h"
+
+#include "wx/gtk/private.h"
+#include "wx/gtk/win_gtk.h"
+

 //-----------------------------------------------------------------------------
 // classes
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // classes
 //-----------------------------------------------------------------------------


@@ -21,68 +30,281 @@
 class wxButton;
 
 //-----------------------------------------------------------------------------
 class wxButton;
 
 //-----------------------------------------------------------------------------

-// wxButton
+// data

 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 

-IMPLEMENT_DYNAMIC_CLASS(wxButton,wxControl)
+extern bool   g_blockEventsOnDrag;

 
 

-void gtk_button_clicked_callback( GtkWidget *WXUNUSED(widget), wxButton *button )
+//-----------------------------------------------------------------------------
+// "clicked"
+//-----------------------------------------------------------------------------
+
+extern "C" {
+static void gtk_button_clicked_callback( GtkWidget *WXUNUSED(widget), wxButton *button )

 {
 {

-  wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
-  event.SetEventObject(button);
-  button->GetEventHandler()->ProcessEvent(event);
-};
+    if (g_isIdle)
+       wxapp_install_idle_handler();
+
+    if (!button->m_hasVMT) return;
+    if (g_blockEventsOnDrag) return;

 
 

+    wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, button->GetId());
+    event.SetEventObject(button);
+    button->GetEventHandler()->ProcessEvent(event);
+}
+}
+
+//-----------------------------------------------------------------------------
+// "style_set" from m_widget

 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 

-wxButton::wxButton(void)
+static gint
+gtk_button_style_set_callback( GtkWidget *m_widget, GtkStyle *WXUNUSED(style), wxButton *win )

 {
 {

-};
+    if (g_isIdle)
+        wxapp_install_idle_handler();

 
 

-wxButton::wxButton( wxWindow *parent, wxWindowID id, const wxString &label,
-      const wxPoint &pos, const wxSize &size,
-      long style, const wxString &name )
+    int left_border = 0;
+    int right_border = 0;
+    int top_border = 0;
+    int bottom_border = 0;
+
+    /* the default button has a border around it */
+    if (GTK_WIDGET_CAN_DEFAULT(m_widget))
+    {
+        GtkBorder *default_border = NULL;
+        gtk_widget_style_get( m_widget, "default_border", &default_border, NULL );
+        if (default_border)
+        {
+            left_border += default_border->left;
+            right_border += default_border->right;
+            top_border += default_border->top;
+            bottom_border += default_border->bottom;
+            g_free( default_border );
+        }
+        win->MoveWindow(
+            win->m_x - top_border,
+            win->m_y - left_border,
+            win->m_width + left_border + right_border,
+            win->m_height + top_border + bottom_border);
+    }
+
+    return FALSE;
+}
+
+//-----------------------------------------------------------------------------
+// wxButton
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxButton,wxControl)
+
+wxButton::wxButton()

 {
 {

-  Create( parent, id, label, pos, size, style, name );
-};
+}
+
+wxButton::~wxButton()
+{
+}

 
 bool wxButton::Create(  wxWindow *parent, wxWindowID id, const wxString &label,
       const wxPoint &pos, const wxSize &size,
 
 bool wxButton::Create(  wxWindow *parent, wxWindowID id, const wxString &label,
       const wxPoint &pos, const wxSize &size,

-      long style, const wxString &name )
+      long style, const wxValidator& validator, const wxString &name )

 {
 {

-  m_needParent = TRUE;
+    m_needParent = true;
+    m_acceptsFocus = true;
+
+    if (!PreCreation( parent, pos, size ) ||
+        !CreateBase( parent, id, pos, size, style, validator, name ))
+    {
+        wxFAIL_MSG( wxT("wxButton creation failed") );
+        return false;
+    }
+
+    m_widget = gtk_button_new_with_mnemonic("");
+
+    float x_alignment = 0.5;
+    if (HasFlag(wxBU_LEFT))
+        x_alignment = 0.0;
+    else if (HasFlag(wxBU_RIGHT))
+        x_alignment = 1.0;
+
+    float y_alignment = 0.5;
+    if (HasFlag(wxBU_TOP))
+        y_alignment = 0.0;
+    else if (HasFlag(wxBU_BOTTOM))
+        y_alignment = 1.0;
+
+#ifdef __WXGTK24__
+    if (!gtk_check_version(2,4,0))
+    {
+        gtk_button_set_alignment(GTK_BUTTON(m_widget), x_alignment, y_alignment);
+    }
+    else
+#endif
+    {
+        if (GTK_IS_MISC(GTK_BIN(m_widget)->child))
+            gtk_misc_set_alignment(GTK_MISC(GTK_BIN(m_widget)->child),
+                                x_alignment, y_alignment);
+    }

 
 

-  wxSize newSize = size;
+    SetLabel(label);

 
 

-  PreCreation( parent, id, pos, newSize, style, name );
+    if (style & wxNO_BORDER)
+       gtk_button_set_relief( GTK_BUTTON(m_widget), GTK_RELIEF_NONE );

 
 

-  SetLabel(label);
-  m_widget = gtk_button_new_with_label( m_label );
+    g_signal_connect_after (m_widget, "clicked",
+                            G_CALLBACK (gtk_button_clicked_callback),
+                            this);

 
 

-  if (newSize.x == -1) newSize.x = 15+gdk_string_measure( m_widget->style->font, label );
-  if (newSize.y == -1) newSize.y = 26;
-  SetSize( newSize.x, newSize.y );
+    g_signal_connect_after (m_widget, "style_set",
+                            G_CALLBACK (gtk_button_style_set_callback),
+                            this);

 
 

-  gtk_signal_connect( GTK_OBJECT(m_widget), "clicked",
-    GTK_SIGNAL_FUNC(gtk_button_clicked_callback), (gpointer*)this );
+    m_parent->DoAddChild( this );

 
 

-  PostCreation();
+    PostCreation(size);

 
 

-  Show( TRUE );
+    return true;
+}

 
 

-  return TRUE;
-};

 
 

-void wxButton::SetDefault(void)
+void wxButton::SetDefault()

 {
 {

-};
+    wxTopLevelWindow *tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
+    wxCHECK_RET( tlw, _T("button without top level window?") );

 
 

-void wxButton::SetLabel( const wxString &label )
+    tlw->SetDefaultItem(this);
+
+    GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
+    gtk_widget_grab_default( m_widget );
+
+    // resize for default border
+    gtk_button_style_set_callback( m_widget, NULL, this );
+}
+
+/* static */
+wxSize wxButtonBase::GetDefaultSize()
+{
+    static wxSize size = wxDefaultSize;
+    if (size == wxDefaultSize)
+    {
+        // NB: Default size of buttons should be same as size of stock
+        //     buttons as used in most GTK+ apps. Unfortunately it's a little
+        //     tricky to obtain this size: stock button's size may be smaller
+        //     than size of button in GtkButtonBox and vice versa,
+        //     GtkButtonBox's minimal button size may be smaller than stock
+        //     button's size. We have to retrieve both values and combine them.
+
+        GtkWidget *wnd = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+        GtkWidget *box = gtk_hbutton_box_new();
+        GtkWidget *btn = gtk_button_new_from_stock(GTK_STOCK_CANCEL);
+        gtk_container_add(GTK_CONTAINER(box), btn);
+        gtk_container_add(GTK_CONTAINER(wnd), box);
+        GtkRequisition req;
+        gtk_widget_size_request(btn, &req);
+
+        gint minwidth, minheight;
+        gtk_widget_style_get(box,
+                             "child-min-width", &minwidth,
+                             "child-min-height", &minheight,
+                             NULL);
+
+        size.x = wxMax(minwidth, req.width);
+        size.y = wxMax(minheight, req.height);
+
+        gtk_widget_destroy(wnd);
+    }
+    return size;
+}
+
+void wxButton::SetLabel( const wxString &lbl )

 {
 {

-  wxControl::SetLabel( label );
-};
+    wxCHECK_RET( m_widget != NULL, wxT("invalid button") );
+
+    wxString label(lbl);
+
+    if (label.empty() && wxIsStockID(m_windowId))
+        label = wxGetStockLabel(m_windowId);
+
+    wxControl::SetLabel(label);
+
+    const wxString labelGTK = GTKConvertMnemonics(label);
+
+    if (wxIsStockID(m_windowId) && wxIsStockLabel(m_windowId, label))
+    {
+        const char *stock = wxGetStockGtkID(m_windowId);
+        if (stock)
+        {
+            gtk_button_set_label(GTK_BUTTON(m_widget), stock);
+            gtk_button_set_use_stock(GTK_BUTTON(m_widget), TRUE);
+            return;
+        }
+    }
+
+    gtk_button_set_label(GTK_BUTTON(m_widget), wxGTK_CONV(labelGTK));
+    gtk_button_set_use_stock(GTK_BUTTON(m_widget), FALSE);
+
+    ApplyWidgetStyle( false );
+}

 
 

-wxString wxButton::GetLabel(void) const
+bool wxButton::Enable( bool enable )

 {
 {

-  return wxControl::GetLabel();
-};
+    if ( !wxControl::Enable( enable ) )
+        return false;
+
+    gtk_widget_set_sensitive(GTK_BIN(m_widget)->child, enable);
+
+    return true;
+}
+
+GdkWindow *wxButton::GTKGetWindow(wxArrayGdkWindows& WXUNUSED(windows)) const
+{
+    return GTK_BUTTON(m_widget)->event_window;
+}
+
+void wxButton::DoApplyWidgetStyle(GtkRcStyle *style)
+{
+    gtk_widget_modify_style(m_widget, style);
+    gtk_widget_modify_style(GTK_BIN(m_widget)->child, style);
+}
+
+wxSize wxButton::DoGetBestSize() const
+{
+    // the default button in wxGTK is bigger than the other ones because of an
+    // extra border around it, but we don't want to take it into account in
+    // our size calculations (otherwsie the result is visually ugly), so
+    // always return the size of non default button from here
+    const bool isDefault = GTK_WIDGET_HAS_DEFAULT(m_widget);
+    if ( isDefault )
+    {
+        // temporarily unset default flag
+        GTK_WIDGET_UNSET_FLAGS( m_widget, GTK_CAN_DEFAULT );
+    }
+
+    wxSize ret( wxControl::DoGetBestSize() );
+
+    if ( isDefault )
+    {
+        // set it back again
+        GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
+    }
+
+    if (!HasFlag(wxBU_EXACTFIT))
+    {
+        wxSize defaultSize = GetDefaultSize();
+        if (ret.x < defaultSize.x) ret.x = defaultSize.x;
+        if (ret.y < defaultSize.y) ret.y = defaultSize.y;
+    }
+
+    CacheBestSize(ret);
+    return ret;
+}
+
+// static
+wxVisualAttributes
+wxButton::GetClassDefaultAttributes(wxWindowVariant WXUNUSED(variant))
+{
+    return GetDefaultAttributesFromGTKWidget(gtk_button_new);
+}
+
+#endif // wxUSE_BUTTON