From 4ba47b40197c7c3f25c2dfbcd6e4813a2e4db392 Mon Sep 17 00:00:00 2001 From: Robert Roebling Date: Tue, 13 Apr 1999 16:46:55 +0000 Subject: [PATCH] Drag works. Drop works, Drag'n'Drop doesn't work. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2147 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775 --- include/wx/gtk/dnd.h | 2 + include/wx/gtk1/dnd.h | 2 + src/gtk/dnd.cpp | 227 +++++++++++++++++++++++++++++++++--------- src/gtk1/dnd.cpp | 227 +++++++++++++++++++++++++++++++++--------- 4 files changed, 360 insertions(+), 98 deletions(-) diff --git a/include/wx/gtk/dnd.h b/include/wx/gtk/dnd.h index a546b66b12..659c6a3004 100644 --- a/include/wx/gtk/dnd.h +++ b/include/wx/gtk/dnd.h @@ -94,6 +94,8 @@ public: wxIcon m_goIcon; wxIcon m_stopIcon; + + bool m_waiting; }; #include "gtk/gtk.h" diff --git a/include/wx/gtk1/dnd.h b/include/wx/gtk1/dnd.h index a546b66b12..659c6a3004 100644 --- a/include/wx/gtk1/dnd.h +++ b/include/wx/gtk1/dnd.h @@ -94,6 +94,8 @@ public: wxIcon m_goIcon; wxIcon m_stopIcon; + + bool m_waiting; }; #include "gtk/gtk.h" diff --git a/src/gtk/dnd.cpp b/src/gtk/dnd.cpp index 00f4e0d90a..bfcc7f0df5 100644 --- a/src/gtk/dnd.cpp +++ b/src/gtk/dnd.cpp @@ -128,6 +128,7 @@ static char * page_xpm[] = { #include "gtk/gtkdnd.h" #include "gtk/gtkselection.h" + // ---------------------------------------------------------------------------- // "drag_leave" // ---------------------------------------------------------------------------- @@ -210,6 +211,8 @@ static gboolean target_drag_drop( GtkWidget *widget, return FALSE, otherwise, if you aren't accepting the drop, call gtk_drag_finish() with success == FALSE otherwise call gtk_drag_data_get()" */ + +// printf( "drop.\n" ); /* this seems to make a difference between not accepting due to wrong target area and due to wrong format. let @@ -274,6 +277,8 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget), /* Owen Taylor: "call gtk_drag_finish() with success == TRUE" */ +// printf( "data received.\n" ); + /* strangely, we get a "drag_data_received" event even when we don't request them. this checks this. */ if (!drop_target->m_currentDataObject) return; @@ -317,9 +322,9 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget), drop_target->m_waiting = FALSE; } -// ---------------------------------------------------------------------------- +//---------------------------------------------------------------------------- // wxDropTarget -// ---------------------------------------------------------------------------- +//---------------------------------------------------------------------------- wxDropTarget::wxDropTarget() { @@ -362,8 +367,8 @@ bool wxDropTarget::IsSupported( wxDataFormat format ) { GdkAtom formatAtom = (GdkAtom) GPOINTER_TO_INT(child->data); -/* char *name = gdk_atom_name( formatAtom ); - if (name) printf( "Format available: %s.\n", name ); */ +// char *name = gdk_atom_name( formatAtom ); +// if (name) printf( "Format available: %s.\n", name ); if (formatAtom == format.GetAtom()) return TRUE; child = child->next; @@ -387,8 +392,13 @@ bool wxDropTarget::GetData( wxDataObject *data ) m_dragTime ); /* wait for the "drag_data_received" event */ + +// printf( "pre wait.\n" ); + m_waiting = TRUE; - while (m_waiting) gtk_main_iteration(); + while (m_waiting) wxYield(); + +// printf( "post wait.\n" ); m_currentDataObject = (wxDataObject*) NULL; @@ -542,14 +552,99 @@ void wxFileDropTarget::OnData( int x, int y ) free( files ); } -//------------------------------------------------------------------------- -// wxDropSource -//------------------------------------------------------------------------- +//---------------------------------------------------------------------------- +// "drag_data_get" +//---------------------------------------------------------------------------- +static void +source_drag_data_get (GtkWidget *WXUNUSED(widget), + GdkDragContext *context, + GtkSelectionData *selection_data, + guint WXUNUSED(info), + guint WXUNUSED(time), + wxDropSource *drop_source ) +{ + char *name = gdk_atom_name( selection_data->target ); + if (name) printf( "Format requested: %s.\n", name ); + + wxNode *node = drop_source->m_data->m_dataObjects.First(); + while (node) + { + wxDataObject *data_object = (wxDataObject*) node->Data(); + if (data_object->GetFormat().GetAtom() == selection_data->target) + { + size_t data_size = data_object->GetSize(); + if (data_size > 0) + { + guchar *buffer = new guchar[data_size]; + data_object->WriteData( buffer ); + + gtk_selection_data_set( selection_data, + selection_data->target, + 8, /* 8-bit */ + buffer, + data_size ); + + free( buffer ); + + /* so far only copy, no moves. TODO. */ + drop_source->m_retValue = wxDragCopy; + + return; + } + } + + node = node->Next(); + } + + drop_source->m_retValue = wxDragCancel; +} + +//---------------------------------------------------------------------------- +// "drag_data_delete" +//---------------------------------------------------------------------------- + +static void source_drag_data_delete( GtkWidget *WXUNUSED(widget), + GdkDragContext *WXUNUSED(context), + wxDropSource *drop_source ) +{ +// printf( "Delete the data!\n" ); + + drop_source->m_retValue = wxDragMove; +} + +//---------------------------------------------------------------------------- +// "drag_begin" +//---------------------------------------------------------------------------- + +static void source_drag_begin( GtkWidget *WXUNUSED(widget), + GdkDragContext *WXUNUSED(context), + wxDropSource *WXUNUSED(drop_source) ) +{ +// printf( "drag_begin.\n" ); +} + +//---------------------------------------------------------------------------- +// "drag_end" +//---------------------------------------------------------------------------- + +static void source_drag_end( GtkWidget *WXUNUSED(widget), + GdkDragContext *WXUNUSED(context), + wxDropSource *drop_source ) +{ +// printf( "drag_end.\n" ); + + drop_source->m_waiting = FALSE; +} + +//--------------------------------------------------------------------------- +// wxDropSource +//--------------------------------------------------------------------------- wxDropSource::wxDropSource( wxWindow *win, const wxIcon &go, const wxIcon &stop ) { g_blockEventsOnDrag = TRUE; + m_waiting = TRUE; m_window = win; m_widget = win->m_widget; @@ -569,7 +664,7 @@ wxDropSource::wxDropSource( wxWindow *win, const wxIcon &go, const wxIcon &stop wxDropSource::wxDropSource( wxDataObject *data, wxWindow *win, const wxIcon &go, const wxIcon &stop ) { - g_blockEventsOnDrag = TRUE; + m_waiting = TRUE; m_window = win; m_widget = win->m_widget; @@ -597,8 +692,6 @@ wxDropSource::wxDropSource( wxDataObject *data, wxWindow *win, const wxIcon &go, wxDropSource::wxDropSource( wxDataBroker *data, wxWindow *win ) { - g_blockEventsOnDrag = TRUE; - m_window = win; m_widget = win->m_widget; if (win->m_wxwindow) m_widget = win->m_wxwindow; @@ -645,53 +738,89 @@ wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) ) if (!m_data) return (wxDragResult) wxDragNone; - static GtkWidget *drag_icon = (GtkWidget*) NULL; - static GtkWidget *drop_icon = (GtkWidget*) NULL; + g_blockEventsOnDrag = TRUE; + + RegisterWindow(); + + m_waiting = TRUE; - GdkPoint hotspot_1 = {0,-5 }; - - if (!drag_icon) + GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 ); + gtk_target_list_add( target_list, gdk_atom_intern( "STRING", FALSE ), 0, 0 ); + + GdkEventMotion event; + event.window = m_widget->window; + int x = 0; + int y = 0; + GdkModifierType state; + gdk_window_get_pointer( event.window, &x, &y, &state ); + event.x = x; + event.y = y; + event.state = state; + + /* GTK wants to know which button was pressed which caused the dragging */ + int button_number = 0; + if (event.state & GDK_BUTTON1_MASK) button_number = 1; + else if (event.state & GDK_BUTTON2_MASK) button_number = 2; + else if (event.state & GDK_BUTTON3_MASK) button_number = 3; + + /* don't start dragging if no button is down */ + if (button_number) { -/* - drag_icon = shape_create_icon ( m_stopIcon, - 440, 140, 0,0, GTK_WINDOW_POPUP); - - gtk_signal_connect (GTK_OBJECT (drag_icon), "destroy", - GTK_SIGNAL_FUNC(gtk_widget_destroyed), - &drag_icon); - - gtk_widget_hide (drag_icon); -*/ - } - - GdkPoint hotspot_2 = {-5,-5}; + GdkDragContext *context = gtk_drag_begin( m_widget, + target_list, + GDK_ACTION_COPY, + button_number, /* number of mouse button which started drag */ + (GdkEvent*) &event ); - if (!drop_icon) - { -/* - drop_icon = shape_create_icon ( m_goIcon, - 440, 140, 0,0, GTK_WINDOW_POPUP); - - gtk_signal_connect (GTK_OBJECT (drop_icon), "destroy", - GTK_SIGNAL_FUNC(gtk_widget_destroyed), - &drop_icon); - - gtk_widget_hide (drop_icon); -*/ - } + wxMask *mask = m_goIcon.GetMask(); + GdkBitmap *bm = (GdkBitmap *) NULL; + if (mask) bm = mask->GetBitmap(); + GdkPixmap *pm = m_goIcon.GetPixmap(); + gtk_drag_set_icon_pixmap( context, + gtk_widget_get_colormap( m_widget ), + pm, + bm, + 0, + 0 ); + + while (m_waiting) wxYield(); + } - return FALSE; + g_blockEventsOnDrag = FALSE; + + UnregisterWindow(); + + return m_retValue; } -void wxDropSource::RegisterWindow(void) -{ - if (!m_data) return; -} - -void wxDropSource::UnregisterWindow(void) +void wxDropSource::RegisterWindow() { if (!m_widget) return; + + gtk_signal_connect( GTK_OBJECT(m_widget), "drag_data_get", + GTK_SIGNAL_FUNC (source_drag_data_get), (gpointer) this); + gtk_signal_connect (GTK_OBJECT(m_widget), "drag_data_delete", + GTK_SIGNAL_FUNC (source_drag_data_delete), (gpointer) this ); + gtk_signal_connect (GTK_OBJECT(m_widget), "drag_begin", + GTK_SIGNAL_FUNC (source_drag_begin), (gpointer) this ); + gtk_signal_connect (GTK_OBJECT(m_widget), "drag_end", + GTK_SIGNAL_FUNC (source_drag_end), (gpointer) this ); + +} + +void wxDropSource::UnregisterWindow() +{ + if (!m_widget) return; + + gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget), + GTK_SIGNAL_FUNC(source_drag_data_get), (gpointer) this ); + gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget), + GTK_SIGNAL_FUNC(source_drag_data_delete), (gpointer) this ); + gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget), + GTK_SIGNAL_FUNC(source_drag_begin), (gpointer) this ); + gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget), + GTK_SIGNAL_FUNC(source_drag_end), (gpointer) this ); } diff --git a/src/gtk1/dnd.cpp b/src/gtk1/dnd.cpp index 00f4e0d90a..bfcc7f0df5 100644 --- a/src/gtk1/dnd.cpp +++ b/src/gtk1/dnd.cpp @@ -128,6 +128,7 @@ static char * page_xpm[] = { #include "gtk/gtkdnd.h" #include "gtk/gtkselection.h" + // ---------------------------------------------------------------------------- // "drag_leave" // ---------------------------------------------------------------------------- @@ -210,6 +211,8 @@ static gboolean target_drag_drop( GtkWidget *widget, return FALSE, otherwise, if you aren't accepting the drop, call gtk_drag_finish() with success == FALSE otherwise call gtk_drag_data_get()" */ + +// printf( "drop.\n" ); /* this seems to make a difference between not accepting due to wrong target area and due to wrong format. let @@ -274,6 +277,8 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget), /* Owen Taylor: "call gtk_drag_finish() with success == TRUE" */ +// printf( "data received.\n" ); + /* strangely, we get a "drag_data_received" event even when we don't request them. this checks this. */ if (!drop_target->m_currentDataObject) return; @@ -317,9 +322,9 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget), drop_target->m_waiting = FALSE; } -// ---------------------------------------------------------------------------- +//---------------------------------------------------------------------------- // wxDropTarget -// ---------------------------------------------------------------------------- +//---------------------------------------------------------------------------- wxDropTarget::wxDropTarget() { @@ -362,8 +367,8 @@ bool wxDropTarget::IsSupported( wxDataFormat format ) { GdkAtom formatAtom = (GdkAtom) GPOINTER_TO_INT(child->data); -/* char *name = gdk_atom_name( formatAtom ); - if (name) printf( "Format available: %s.\n", name ); */ +// char *name = gdk_atom_name( formatAtom ); +// if (name) printf( "Format available: %s.\n", name ); if (formatAtom == format.GetAtom()) return TRUE; child = child->next; @@ -387,8 +392,13 @@ bool wxDropTarget::GetData( wxDataObject *data ) m_dragTime ); /* wait for the "drag_data_received" event */ + +// printf( "pre wait.\n" ); + m_waiting = TRUE; - while (m_waiting) gtk_main_iteration(); + while (m_waiting) wxYield(); + +// printf( "post wait.\n" ); m_currentDataObject = (wxDataObject*) NULL; @@ -542,14 +552,99 @@ void wxFileDropTarget::OnData( int x, int y ) free( files ); } -//------------------------------------------------------------------------- -// wxDropSource -//------------------------------------------------------------------------- +//---------------------------------------------------------------------------- +// "drag_data_get" +//---------------------------------------------------------------------------- +static void +source_drag_data_get (GtkWidget *WXUNUSED(widget), + GdkDragContext *context, + GtkSelectionData *selection_data, + guint WXUNUSED(info), + guint WXUNUSED(time), + wxDropSource *drop_source ) +{ + char *name = gdk_atom_name( selection_data->target ); + if (name) printf( "Format requested: %s.\n", name ); + + wxNode *node = drop_source->m_data->m_dataObjects.First(); + while (node) + { + wxDataObject *data_object = (wxDataObject*) node->Data(); + if (data_object->GetFormat().GetAtom() == selection_data->target) + { + size_t data_size = data_object->GetSize(); + if (data_size > 0) + { + guchar *buffer = new guchar[data_size]; + data_object->WriteData( buffer ); + + gtk_selection_data_set( selection_data, + selection_data->target, + 8, /* 8-bit */ + buffer, + data_size ); + + free( buffer ); + + /* so far only copy, no moves. TODO. */ + drop_source->m_retValue = wxDragCopy; + + return; + } + } + + node = node->Next(); + } + + drop_source->m_retValue = wxDragCancel; +} + +//---------------------------------------------------------------------------- +// "drag_data_delete" +//---------------------------------------------------------------------------- + +static void source_drag_data_delete( GtkWidget *WXUNUSED(widget), + GdkDragContext *WXUNUSED(context), + wxDropSource *drop_source ) +{ +// printf( "Delete the data!\n" ); + + drop_source->m_retValue = wxDragMove; +} + +//---------------------------------------------------------------------------- +// "drag_begin" +//---------------------------------------------------------------------------- + +static void source_drag_begin( GtkWidget *WXUNUSED(widget), + GdkDragContext *WXUNUSED(context), + wxDropSource *WXUNUSED(drop_source) ) +{ +// printf( "drag_begin.\n" ); +} + +//---------------------------------------------------------------------------- +// "drag_end" +//---------------------------------------------------------------------------- + +static void source_drag_end( GtkWidget *WXUNUSED(widget), + GdkDragContext *WXUNUSED(context), + wxDropSource *drop_source ) +{ +// printf( "drag_end.\n" ); + + drop_source->m_waiting = FALSE; +} + +//--------------------------------------------------------------------------- +// wxDropSource +//--------------------------------------------------------------------------- wxDropSource::wxDropSource( wxWindow *win, const wxIcon &go, const wxIcon &stop ) { g_blockEventsOnDrag = TRUE; + m_waiting = TRUE; m_window = win; m_widget = win->m_widget; @@ -569,7 +664,7 @@ wxDropSource::wxDropSource( wxWindow *win, const wxIcon &go, const wxIcon &stop wxDropSource::wxDropSource( wxDataObject *data, wxWindow *win, const wxIcon &go, const wxIcon &stop ) { - g_blockEventsOnDrag = TRUE; + m_waiting = TRUE; m_window = win; m_widget = win->m_widget; @@ -597,8 +692,6 @@ wxDropSource::wxDropSource( wxDataObject *data, wxWindow *win, const wxIcon &go, wxDropSource::wxDropSource( wxDataBroker *data, wxWindow *win ) { - g_blockEventsOnDrag = TRUE; - m_window = win; m_widget = win->m_widget; if (win->m_wxwindow) m_widget = win->m_wxwindow; @@ -645,53 +738,89 @@ wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) ) if (!m_data) return (wxDragResult) wxDragNone; - static GtkWidget *drag_icon = (GtkWidget*) NULL; - static GtkWidget *drop_icon = (GtkWidget*) NULL; + g_blockEventsOnDrag = TRUE; + + RegisterWindow(); + + m_waiting = TRUE; - GdkPoint hotspot_1 = {0,-5 }; - - if (!drag_icon) + GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 ); + gtk_target_list_add( target_list, gdk_atom_intern( "STRING", FALSE ), 0, 0 ); + + GdkEventMotion event; + event.window = m_widget->window; + int x = 0; + int y = 0; + GdkModifierType state; + gdk_window_get_pointer( event.window, &x, &y, &state ); + event.x = x; + event.y = y; + event.state = state; + + /* GTK wants to know which button was pressed which caused the dragging */ + int button_number = 0; + if (event.state & GDK_BUTTON1_MASK) button_number = 1; + else if (event.state & GDK_BUTTON2_MASK) button_number = 2; + else if (event.state & GDK_BUTTON3_MASK) button_number = 3; + + /* don't start dragging if no button is down */ + if (button_number) { -/* - drag_icon = shape_create_icon ( m_stopIcon, - 440, 140, 0,0, GTK_WINDOW_POPUP); - - gtk_signal_connect (GTK_OBJECT (drag_icon), "destroy", - GTK_SIGNAL_FUNC(gtk_widget_destroyed), - &drag_icon); - - gtk_widget_hide (drag_icon); -*/ - } - - GdkPoint hotspot_2 = {-5,-5}; + GdkDragContext *context = gtk_drag_begin( m_widget, + target_list, + GDK_ACTION_COPY, + button_number, /* number of mouse button which started drag */ + (GdkEvent*) &event ); - if (!drop_icon) - { -/* - drop_icon = shape_create_icon ( m_goIcon, - 440, 140, 0,0, GTK_WINDOW_POPUP); - - gtk_signal_connect (GTK_OBJECT (drop_icon), "destroy", - GTK_SIGNAL_FUNC(gtk_widget_destroyed), - &drop_icon); - - gtk_widget_hide (drop_icon); -*/ - } + wxMask *mask = m_goIcon.GetMask(); + GdkBitmap *bm = (GdkBitmap *) NULL; + if (mask) bm = mask->GetBitmap(); + GdkPixmap *pm = m_goIcon.GetPixmap(); + gtk_drag_set_icon_pixmap( context, + gtk_widget_get_colormap( m_widget ), + pm, + bm, + 0, + 0 ); + + while (m_waiting) wxYield(); + } - return FALSE; + g_blockEventsOnDrag = FALSE; + + UnregisterWindow(); + + return m_retValue; } -void wxDropSource::RegisterWindow(void) -{ - if (!m_data) return; -} - -void wxDropSource::UnregisterWindow(void) +void wxDropSource::RegisterWindow() { if (!m_widget) return; + + gtk_signal_connect( GTK_OBJECT(m_widget), "drag_data_get", + GTK_SIGNAL_FUNC (source_drag_data_get), (gpointer) this); + gtk_signal_connect (GTK_OBJECT(m_widget), "drag_data_delete", + GTK_SIGNAL_FUNC (source_drag_data_delete), (gpointer) this ); + gtk_signal_connect (GTK_OBJECT(m_widget), "drag_begin", + GTK_SIGNAL_FUNC (source_drag_begin), (gpointer) this ); + gtk_signal_connect (GTK_OBJECT(m_widget), "drag_end", + GTK_SIGNAL_FUNC (source_drag_end), (gpointer) this ); + +} + +void wxDropSource::UnregisterWindow() +{ + if (!m_widget) return; + + gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget), + GTK_SIGNAL_FUNC(source_drag_data_get), (gpointer) this ); + gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget), + GTK_SIGNAL_FUNC(source_drag_data_delete), (gpointer) this ); + gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget), + GTK_SIGNAL_FUNC(source_drag_begin), (gpointer) this ); + gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget), + GTK_SIGNAL_FUNC(source_drag_end), (gpointer) this ); }