#include <cassert>
#include <gtkmm/adjustment.h>
#include <gtkmm/label.h>
+#include <gtkmm/window.h>
#include "pbd/compose.h"
#include "pbd/stacktrace.h"
#include "canvas/canvas.h"
+#include "canvas/colors.h"
#include "canvas/debug.h"
#include "canvas/line.h"
#include "canvas/scroll_group.h"
+#include "canvas/utils.h"
using namespace std;
using namespace ArdourCanvas;
+uint32_t Canvas::tooltip_timeout_msecs = 750;
+
/** Construct a new Canvas */
Canvas::Canvas ()
: _root (this)
+ , _bg_color (rgba_to_color (0, 1.0, 0.0, 1.0))
{
set_epoch ();
}
_root.render (*draw, context);
-#ifdef CANVAS_DEBUG
+#if defined CANVAS_DEBUG && !PLATFORM_WINDOWS
if (getenv ("CANVAS_HARLEQUIN_DEBUGGING")) {
// This transparently colors the rect being rendered, after it has been drawn.
double r = (random() % 65536) /65536.0;
request_redraw (item->item_to_window (area));
}
+void
+Canvas::set_tooltip_timeout (uint32_t msecs)
+{
+ tooltip_timeout_msecs = msecs;
+}
+
+void
+Canvas::set_background_color (Color c)
+{
+ _bg_color = c;
+
+ boost::optional<Rect> r = _root.bounding_box();
+
+ if (r) {
+ request_redraw (_root.item_to_window (r.get()));
+ }
+}
+
void
GtkCanvas::re_enter ()
{
, _new_current_item (0)
, _grabbed_item (0)
, _focused_item (0)
+ , current_tooltip_item (0)
+ , tooltip_window (0)
{
/* these are the events we want to know about */
add_events (Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK | Gdk::POINTER_MOTION_MASK |
- Gdk::SCROLL_MASK | Gdk::ENTER_NOTIFY_MASK | Gdk::LEAVE_NOTIFY_MASK);
+ Gdk::SCROLL_MASK | Gdk::ENTER_NOTIFY_MASK | Gdk::LEAVE_NOTIFY_MASK |
+ Gdk::KEY_PRESS_MASK | Gdk::KEY_RELEASE_MASK);
}
void
if (_new_current_item && !_new_current_item->ignore_events()) {
enter_event.detail = enter_detail;
DEBUG_TRACE (PBD::DEBUG::CanvasEnterLeave, string_compose ("ENTER %1/%2\n", _new_current_item->whatami(), _new_current_item->name));
+ start_tooltip_timeout (_new_current_item);
_new_current_item->Event ((GdkEvent*)&enter_event);
}
_focused_item = 0;
}
+ if (current_tooltip_item) {
+ current_tooltip_item = 0;
+ stop_tooltip_timeout ();
+ }
+
ScrollGroup* sg = dynamic_cast<ScrollGroup*>(item);
if (sg) {
scrollers.remove (sg);
}
+void
+GtkCanvas::on_size_allocate (Gtk::Allocation& a)
+{
+ EventBox::on_size_allocate (a);
+#ifdef USE_CAIRO_IMAGE_SURFACE
+ /* allocate an image surface as large as the canvas itself */
+
+ canvas_image.clear ();
+ canvas_image = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, a.get_width(), a.get_height());
+#endif
+}
+
/** Handler for GDK expose events.
* @param ev Event.
* @return true if the event was handled.
bool
GtkCanvas::on_expose_event (GdkEventExpose* ev)
{
- Cairo::RefPtr<Cairo::Context> cairo_context = get_window()->create_cairo_context ();
- render (Rect (ev->area.x, ev->area.y, ev->area.x + ev->area.width, ev->area.y + ev->area.height), cairo_context);
- return true;
-}
-
-/** @return Our Cairo context, or 0 if we don't have one */
-Cairo::RefPtr<Cairo::Context>
-GtkCanvas::context ()
-{
- Glib::RefPtr<Gdk::Window> w = get_window ();
- if (!w) {
- return Cairo::RefPtr<Cairo::Context> ();
+#ifdef USE_CAIRO_IMAGE_SURFACE
+ if (!canvas_image) {
+ canvas_image = Cairo::ImageSurface::create (Cairo::FORMAT_ARGB32, get_width(), get_height());
}
+ Cairo::RefPtr<Cairo::Context> draw_context = Cairo::Context::create (canvas_image);
+ Cairo::RefPtr<Cairo::Context> window_context = get_window()->create_cairo_context ();
+#else
+ Cairo::RefPtr<Cairo::Context> draw_context = get_window()->create_cairo_context ();
+#endif
- return w->create_cairo_context ();
+ /* draw background color */
+
+ draw_context->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
+ draw_context->clip_preserve ();
+ set_source_rgba (draw_context, _bg_color);
+ draw_context->fill ();
+
+ /* render canvas */
+
+ render (Rect (ev->area.x, ev->area.y, ev->area.x + ev->area.width, ev->area.y + ev->area.height), draw_context);
+
+#ifdef USE_CAIRO_IMAGE_SURFACE
+ /* now blit our private surface back to the GDK one */
+
+ window_context->rectangle (ev->area.x, ev->area.y, ev->area.width, ev->area.height);
+ window_context->clip ();
+ window_context->set_source (canvas_image, 0, 0);
+ window_context->set_operator (Cairo::OPERATOR_SOURCE);
+ window_context->paint ();
+#endif
+
+ return true;
}
/** Handler for GDK scroll events.
return deliver_event (reinterpret_cast<GdkEvent*>(©));
}
+/** Handler for GDK key press events.
+ * @param ev Event.
+ * @return true if the event was handled.
+ */
+bool
+GtkCanvas::on_key_press_event (GdkEventKey* ev)
+{
+ DEBUG_TRACE (PBD::DEBUG::CanvasEvents, "canvas key press\n");
+ return deliver_event (reinterpret_cast<GdkEvent*>(ev));
+}
+
+/** Handler for GDK key release events.
+ * @param ev Event.
+ * @return true if the event was handled.
+ */
+bool
+GtkCanvas::on_key_release_event (GdkEventKey* ev)
+{
+ DEBUG_TRACE (PBD::DEBUG::CanvasEvents, "canvas key release\n");
+ return deliver_event (reinterpret_cast<GdkEvent*>(ev));
+}
+
/** Handler for GDK button press events.
* @param ev Event.
* @return true if the event was handled.
bool
GtkCanvas::on_motion_notify_event (GdkEventMotion* ev)
{
+ hide_tooltip ();
+
/* translate event coordinates from window to canvas */
GdkEvent copy = *((GdkEvent*)ev);
bool
GtkCanvas::on_leave_notify_event (GdkEventCrossing* ev)
{
+ switch (ev->detail) {
+ case GDK_NOTIFY_ANCESTOR:
+ case GDK_NOTIFY_UNKNOWN:
+ case GDK_NOTIFY_VIRTUAL:
+ case GDK_NOTIFY_NONLINEAR:
+ case GDK_NOTIFY_NONLINEAR_VIRTUAL:
+ /* leaving window, cancel any tooltips */
+ stop_tooltip_timeout ();
+ hide_tooltip ();
+ break;
+ default:
+ /* we don't care about any other kind
+ of leave event (notably GDK_NOTIFY_INFERIOR)
+ */
+ break;
+ }
_new_current_item = 0;
deliver_enter_leave (Duple (ev->x, ev->y), ev->state);
return true;
return get_allocation().get_height();
}
+void
+GtkCanvas::start_tooltip_timeout (Item* item)
+{
+ stop_tooltip_timeout ();
+
+ if (item) {
+ current_tooltip_item = item;
+
+ /* wait for the first idle that happens after this is
+ called. this means that we've stopped processing events, which
+ in turn implies that the user has stopped doing stuff for a
+ little while.
+ */
+
+ Glib::signal_idle().connect (sigc::mem_fun (*this, &GtkCanvas::really_start_tooltip_timeout));
+ }
+}
+
+bool
+GtkCanvas::really_start_tooltip_timeout ()
+{
+ /* an idle has occured since we entered a tooltip-bearing widget. Now
+ * wait 1 second and if the timeout isn't cancelled, show the tooltip.
+ */
+
+ if (current_tooltip_item) {
+ tooltip_timeout_connection = Glib::signal_timeout().connect (sigc::mem_fun (*this, &GtkCanvas::show_tooltip), tooltip_timeout_msecs);
+ }
+
+ return false; /* this is called from an idle callback, don't call it again */
+}
+
+void
+GtkCanvas::stop_tooltip_timeout ()
+{
+ current_tooltip_item = 0;
+ tooltip_timeout_connection.disconnect ();
+}
+
+bool
+GtkCanvas::show_tooltip ()
+{
+ Rect tooltip_item_bbox;
+
+ if (!current_tooltip_item || current_tooltip_item->tooltip().empty() || !current_tooltip_item->bounding_box()) {
+ return false;
+ }
+
+ if (!tooltip_window) {
+ tooltip_window = new Gtk::Window (Gtk::WINDOW_POPUP);
+ tooltip_label = manage (new Gtk::Label);
+ tooltip_label->show ();
+ tooltip_window->add (*tooltip_label);
+ tooltip_window->set_border_width (6);
+ tooltip_window->set_name ("tooltip");
+ }
+
+ tooltip_label->set_text (current_tooltip_item->tooltip());
+
+ /* figure out where to position the tooltip */
+
+ Gtk::Widget* toplevel = get_toplevel();
+ assert (toplevel);
+ int pointer_x, pointer_y;
+ Gdk::ModifierType mask;
+
+ (void) toplevel->get_window()->get_pointer (pointer_x, pointer_y, mask);
+
+ Duple tooltip_window_origin (pointer_x, pointer_y);
+
+ /* convert to root window coordinates */
+
+ int win_x, win_y;
+ dynamic_cast<Gtk::Window*>(toplevel)->get_position (win_x, win_y);
+
+ tooltip_window_origin = tooltip_window_origin.translate (Duple (win_x, win_y));
+
+ /* we don't want the pointer to be inside the window when it is
+ * displayed, because then we generate a leave/enter event pair when
+ * the window is displayed then hidden - the enter event will
+ * trigger a new tooltip timeout.
+ *
+ * So move the window right of the pointer position by just a enough
+ * to get it away from the pointer.
+ */
+
+ tooltip_window_origin.x += 20;
+
+ /* move the tooltip window into position */
+
+ tooltip_window->move (tooltip_window_origin.x, tooltip_window_origin.y);
+
+ /* ready to show */
+
+ tooltip_window->present ();
+
+ /* called from a timeout handler, don't call it again */
+
+ return false;
+}
+
+void
+GtkCanvas::hide_tooltip ()
+{
+ /* hide it if its there */
+
+ if (tooltip_window) {
+ tooltip_window->hide ();
+ }
+}
+
/** Create a GtkCanvaSViewport.
* @param hadj Adjustment to use for horizontal scrolling.
* @param vadj Adjustment to use for vertica scrolling.
projects / ardour.git / blobdiff