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TriggerBox: draw DnD icon

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Robin Gareus 2022-01-11 21:53:56 +01:00
parent 5e3c49f397
commit 4eb6a2f195
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1 changed files with 34 additions and 12 deletions
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46
gtk2_ardour/triggerbox_ui.cc
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@ -767,18 +767,40 @@ TriggerEntry::event (GdkEvent* ev)
void
TriggerEntry::drag_begin (Glib::RefPtr<Gdk::DragContext> const& context)
{
#if 0
int width = 130;
int height = 20;
GtkCanvas* gtkcanvas = static_cast<GtkCanvas*> (canvas ());
Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (gtkcanvas->get_root_window(), width, height);
cairo_t *cr = gdk_cairo_create (Glib::unwrap (pixmap));
cairo_set_source_rgb (cr, 1, 0, 0);
cairo_rectangle (cr, 0, 0, width, height);
cairo_fill (cr);
cairo_destroy (cr);
context->set_icon (pixmap->get_colormap(), pixmap, Glib::RefPtr<Gdk::Bitmap>(NULL), width / 2, height / 2);
#endif
if (!_drag_active) {
/* Since the canvas is shared, all TriggerEntry inside
* the TriggerBox canvas receive this signal
*/
return;
}
//const ArdourCanvas::Rect rect = allocation ();
int width = _rect.width ();
int height = _rect.height ();
GtkCanvas* gtkcanvas = static_cast<GtkCanvas*> (canvas ());
Glib::RefPtr<Gdk::Pixmap> pixmap = Gdk::Pixmap::create (gtkcanvas->get_root_window (), width, height);
{
cairo_t* cr = gdk_cairo_create (Glib::unwrap (pixmap));
Cairo::RefPtr<Cairo::Context> ctx = Cairo::RefPtr<Cairo::Context> (new Cairo::Context (cr, true /* has_reference */));
/* inverse offset, because ::render() translates coordinates itself */
ArdourCanvas::Rect self (item_to_window (_rect));
ctx->translate (-self.x0, -self.y0);
/* save context because ::render() calls set_identity_matrix () */
ctx->save ();
render (self, ctx);
ctx->restore ();
/* draw an outline around the drag object, replace red selection border */
ctx->set_identity_matrix ();
ctx->rectangle (0, 0, width, height);
set_source_rgba (ctx, UIConfiguration::instance ().color ("neutral:foreground"));
ctx->set_line_width (1.5);
ctx->stroke ();
/* ctx leaves scope, cr is destroyed, and pixmap surface is flush()ed */
}
context->set_icon (pixmap->get_colormap (), pixmap, Glib::RefPtr<Gdk::Bitmap> (NULL), width / 2, height / 2);
}
void