gtktiledviewer: start in viewer mode, switch to edit mode by mouse click

Change-Id: I0863ec8fb159a2e367951ba9e7d7310d250d8a1e

include/LibreOfficeKit/LibreOfficeKitGtk.h

@@ -41,6 +41,8 @@ struct _LOKDocView
 
     LibreOfficeKit* pOffice;
     LibreOfficeKitDocument* pDocument;
+    /// View or edit mode.
+    gboolean m_bEdit;
 };
 
 struct _LOKDocViewClass
@@ -64,6 +66,9 @@ char*           lok_docview_get_part_name   (LOKDocView* pDocView,
                                              int nPart);
 void            lok_docview_set_partmode    (LOKDocView* pDocView,
                                              LibreOfficeKitPartMode ePartMode);
+/// Sets if the viewer is actually an editor or not.
+void            lok_docview_set_edit        (LOKDocView* pDocView,
+                                             gboolean bEdit);
 #ifdef __cplusplus
 }
 #endif

libreofficekit/qa/gtktiledviewer/gtktiledviewer.cxx

@@ -131,8 +131,11 @@ void changeQuadView( GtkWidget* /*pButton*/, gpointer /* pItem */ )
 static void signalKey(GtkWidget* /*pWidget*/, GdkEventKey* pEvent, gpointer /*pData*/)
 {
     LOKDocView* pLOKDocView = LOK_DOCVIEW(pDocView);
-
     int nCode = 0;
+
+    if (!pLOKDocView->m_bEdit)
+        return;
+
     switch (pEvent->keyval)
     {
     case GDK_BackSpace:
@@ -154,6 +157,14 @@ static void signalKey(GtkWidget* /*pWidget*/, GdkEventKey* pEvent, gpointer /*pD
         pLOKDocView->pOffice->pClass->postKeyEvent(pLOKDocView->pOffice, LOK_KEYEVENT_KEYINPUT, nCode);
 }
 
+/// Receives a button press event.
+static void signalButton(GtkWidget* /*pWidget*/, GdkEvent* /*pEvent*/, gpointer /*pData*/)
+{
+    LOKDocView* pLOKDocView = LOK_DOCVIEW(pDocView);
+
+    lok_docview_set_edit(pLOKDocView, TRUE);
+}
+
 // GtkComboBox requires gtk 2.24 or later
 #if ( GTK_MAJOR_VERSION == 2 && GTK_MINOR_VERSION >= 24 ) || GTK_MAJOR_VERSION > 2
 void populatePartSelector()
@@ -311,6 +322,7 @@ int main( int argc, char* argv[] )
     // Input handling.
     g_signal_connect(pWindow, "key-press-event", G_CALLBACK(signalKey), NULL);
     g_signal_connect(pWindow, "key-release-event", G_CALLBACK(signalKey), NULL);
+    g_signal_connect(pDocView, "button-press-event", G_CALLBACK(signalButton), NULL);
 
     gtk_container_add( GTK_CONTAINER(pVBox), pDocView );
 

libreofficekit/source/gtk/lokdocview.c

@@ -71,6 +71,9 @@ static void lok_docview_init( LOKDocView* pDocView )
     gtk_scrolled_window_add_with_viewport( GTK_SCROLLED_WINDOW(pDocView),
                                            pDocView->pEventBox );
 
+    // Allow reacting to button press events.
+    gtk_widget_set_events(pDocView->pEventBox, GDK_BUTTON_PRESS_MASK);
+
     pDocView->pCanvas = gtk_image_new();
     gtk_container_add( GTK_CONTAINER( pDocView->pEventBox ), pDocView->pCanvas );
 
@@ -84,6 +87,7 @@ static void lok_docview_init( LOKDocView* pDocView )
     pDocView->pDocument = 0;
 
     pDocView->fZoom = 1;
+    pDocView->m_bEdit = FALSE;
 
     gtk_signal_connect( GTK_OBJECT(pDocView), "destroy",
                         GTK_SIGNAL_FUNC(lcl_onDestroy), NULL );
@@ -212,7 +216,6 @@ SAL_DLLPUBLIC_EXPORT gboolean lok_docview_open_document( LOKDocView* pDocView, c
     {
         pDocView->pDocument->pClass->initializeForRendering(pDocView->pDocument);
         renderDocument( pDocView );
-        pDocView->pDocument->pClass->registerCallback(pDocView->pDocument, &lok_docview_callback_worker, pDocView);
     }
 
     return TRUE;
@@ -261,4 +264,13 @@ SAL_DLLPUBLIC_EXPORT void lok_docview_set_partmode( LOKDocView* pDocView,
     pDocView->pDocument->pClass->setPartMode( pDocView->pDocument, ePartMode );
     renderDocument( pDocView );
 }
+
+SAL_DLLPUBLIC_EXPORT void lok_docview_set_edit( LOKDocView* pDocView,
+                                                gboolean bEdit )
+{
+    if (!pDocView->m_bEdit && bEdit)
+        pDocView->pDocument->pClass->registerCallback(pDocView->pDocument, &lok_docview_callback_worker, pDocView);
+    pDocView->m_bEdit = bEdit;
+}
+
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */