sort export formats & presets in alphabetical name order
[ardour.git] / gtk2_ardour / stereo_panner.cc
index 7ab526f8fa8e8deb3c0582ae5d9c43eb3e0e44bf..3826dc1c7a1ac1b7a1d031f6731c92f76e65c10e 100644 (file)
@@ -30,7 +30,9 @@
 #include "gtkmm2ext/gui_thread.h"
 #include "gtkmm2ext/gtk_ui.h"
 #include "gtkmm2ext/keyboard.h"
+#include "gtkmm2ext/utils.h"
 
+#include "ardour/pannable.h"
 #include "ardour/panner.h"
 
 #include "ardour_ui.h"
@@ -45,18 +47,20 @@ using namespace std;
 using namespace Gtk;
 using namespace Gtkmm2ext;
 
-static const int pos_box_size = 10;
+static const int pos_box_size = 8;
 static const int lr_box_size = 15;
 static const int step_down = 10;
 static const int top_step = 2;
 
 StereoPanner::ColorScheme StereoPanner::colors[3];
 bool StereoPanner::have_colors = false;
-PBD::Signal0<void> StereoPanner::color_change;
 
-StereoPanner::StereoPanner (boost::shared_ptr<PBD::Controllable> position, boost::shared_ptr<PBD::Controllable> width)
-        : position_control (position)
-        , width_control (width)
+using namespace ARDOUR;
+
+StereoPanner::StereoPanner (boost::shared_ptr<Panner> panner)
+        : _panner (panner)
+        , position_control (_panner->pannable()->pan_azimuth_control)
+        , width_control (_panner->pannable()->pan_width_control)
         , dragging (false)
         , dragging_position (false)
         , dragging_left (false)
@@ -67,8 +71,8 @@ StereoPanner::StereoPanner (boost::shared_ptr<PBD::Controllable> position, boost
         , detented (false)
         , drag_data_window (0)
         , drag_data_label (0)
-        , position_binder (position)
-        , width_binder (width)
+        , position_binder (position_control)
+        , width_binder (width_control)
 {
         if (!have_colors) {
                 set_colors ();
@@ -78,7 +82,6 @@ StereoPanner::StereoPanner (boost::shared_ptr<PBD::Controllable> position, boost
         position_control->Changed.connect (connections, invalidator(*this), boost::bind (&StereoPanner::value_change, this), gui_context());
         width_control->Changed.connect (connections, invalidator(*this), boost::bind (&StereoPanner::value_change, this), gui_context());
 
-        set_tooltip ();
         set_flags (Gtk::CAN_FOCUS);
 
         add_events (Gdk::ENTER_NOTIFY_MASK|Gdk::LEAVE_NOTIFY_MASK|
@@ -87,7 +90,7 @@ StereoPanner::StereoPanner (boost::shared_ptr<PBD::Controllable> position, boost
                     Gdk::SCROLL_MASK|
                     Gdk::POINTER_MOTION_MASK);
 
-        color_change.connect (connections, invalidator (*this), boost::bind (&DrawingArea::queue_draw, this), gui_context());
+        ColorsChanged.connect (sigc::mem_fun (*this, &StereoPanner::color_handler));
 }
 
 StereoPanner::~StereoPanner ()
@@ -95,21 +98,6 @@ StereoPanner::~StereoPanner ()
         delete drag_data_window;
 }
 
-void
-StereoPanner::set_tooltip ()
-{
-        Gtkmm2ext::UI::instance()->set_tip (this, 
-                                            string_compose (_("0 -> set width to zero (mono)\n%1-uparrow -> set width to 100\n%1-downarrow -> set width to -100"), 
-                                                            
-                                                            Keyboard::secondary_modifier_name()).c_str());
-}
-
-void
-StereoPanner::unset_tooltip ()
-{
-        Gtkmm2ext::UI::instance()->set_tip (this, "");
-}
-
 void
 StereoPanner::set_drag_data ()
 {
@@ -127,10 +115,11 @@ StereoPanner::set_drag_data ()
            the center of the USA isn't Kansas, its (50LA, 50NY) and it will all make sense.
         */
 
-        drag_data_label->set_markup (string_compose (_("L:%1 R:%2 Width: %3%%"),
-                                                     (int) rint (100.0 * (1.0 - pos)),
-                                                     (int) rint (100.0 * pos),
-                                                     (int) floor (100.0 * width_control->get_value())));
+        char buf[64];
+        snprintf (buf, sizeof (buf), "L:%3d R:%3d Width:%d%%", (int) rint (100.0 * (1.0 - pos)),
+                  (int) rint (100.0 * pos),
+                  (int) floor (100.0 * width_control->get_value()));
+        drag_data_label->set_markup (buf);
 }
 
 void
@@ -145,15 +134,15 @@ StereoPanner::on_expose_event (GdkEventExpose* ev)
 {
        Glib::RefPtr<Gdk::Window> win (get_window());
        Glib::RefPtr<Gdk::GC> gc (get_style()->get_base_gc (get_state()));
-
-        cairo_t* cr = gdk_cairo_create (win->gobj());
+        Cairo::RefPtr<Cairo::Context> context = get_window()->create_cairo_context();
        
         int width, height;
         double pos = position_control->get_value (); /* 0..1 */
         double swidth = width_control->get_value (); /* -1..+1 */
         double fswidth = fabs (swidth);
-        uint32_t o, f, t, b;
+        uint32_t o, f, t, b, r;
         State state;
+        const double corner_radius = 5.0;
 
         width = get_width();
         height = get_height ();
@@ -170,12 +159,13 @@ StereoPanner::on_expose_event (GdkEventExpose* ev)
         f = colors[state].fill;
         t = colors[state].text;
         b = colors[state].background;
+        r = colors[state].rule;
 
         /* background */
 
-        cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(b), UINT_RGBA_G_FLT(b), UINT_RGBA_B_FLT(b), UINT_RGBA_A_FLT(b));
-        cairo_rectangle (cr, 0, 0, width, height);
-        cairo_fill (cr);
+        context->set_source_rgba (UINT_RGBA_R_FLT(b), UINT_RGBA_G_FLT(b), UINT_RGBA_B_FLT(b), UINT_RGBA_A_FLT(b));
+        rounded_rectangle (context, 0, 0, width, height, corner_radius);
+        context->fill ();
 
         /* the usable width is reduced from the real width, because we need space for 
            the two halves of LR boxes that will extend past the actual left/right
@@ -191,7 +181,7 @@ StereoPanner::on_expose_event (GdkEventExpose* ev)
                    So, offset cairo by 1, and reduce effective width by 1 
                 */
                 usable_width -= 1.0;
-                cairo_translate (cr, 1.0, 0.0);
+                context->translate (1.0, 0.0);
         }
 
         double center = (lr_box_size/2.0) + (usable_width * pos);
@@ -203,83 +193,89 @@ StereoPanner::on_expose_event (GdkEventExpose* ev)
         left = center - pan_spread;  // center of left box
         right = center + pan_spread; // center of right box
 
+        /* center line */
+
+        context->set_line_width (1.0);
+        context->move_to ((usable_width + lr_box_size)/2.0, 0);
+        context->rel_line_to (0, height);
+        context->set_source_rgba (UINT_RGBA_R_FLT(r), UINT_RGBA_G_FLT(r), UINT_RGBA_B_FLT(r), UINT_RGBA_A_FLT(r));
+        context->stroke ();
+
         /* compute & draw the line through the box */
         
-        cairo_set_line_width (cr, 2);
-        cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
-        cairo_move_to (cr, left, top_step+(pos_box_size/2)+step_down);
-        cairo_line_to (cr, left, top_step+(pos_box_size/2));
-        cairo_line_to (cr, right, top_step+(pos_box_size/2));
-        cairo_line_to (cr, right, top_step+(pos_box_size/2) + step_down);
-        cairo_stroke (cr);
+        context->set_line_width (2);
+        context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
+        context->move_to (left, top_step+(pos_box_size/2.0)+step_down);
+        context->line_to (left, top_step+(pos_box_size/2.0));
+        context->line_to (right, top_step+(pos_box_size/2.0));
+        context->line_to (right, top_step+(pos_box_size/2.0) + step_down);
+        context->stroke ();
 
         /* left box */
 
-        cairo_rectangle (cr, 
-                         left - half_lr_box,
-                         half_lr_box+step_down, 
-                         lr_box_size, lr_box_size);
-        cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
-        cairo_stroke_preserve (cr);
-        cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
-       cairo_fill (cr);
+        rounded_rectangle (context, left - half_lr_box,
+                           half_lr_box+step_down, 
+                           lr_box_size, lr_box_size, corner_radius);
+        context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
+        context->stroke_preserve ();
+        context->set_source_rgba (UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
+       context->fill ();
         
         /* add text */
 
-        cairo_move_to (cr, 
-                       left - half_lr_box + 3,
-                       (lr_box_size/2) + step_down + 13);
-        cairo_select_font_face (cr, "sans-serif", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_BOLD);
+        context->move_to (left - half_lr_box + 3,
+                          (lr_box_size/2) + step_down + 13);
+        context->select_font_face ("sans-serif", Cairo::FONT_SLANT_NORMAL, Cairo::FONT_WEIGHT_BOLD);
 
         if (state != Mono) {
-                cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(t), UINT_RGBA_G_FLT(t), UINT_RGBA_B_FLT(t), UINT_RGBA_A_FLT(t));
+                context->set_source_rgba (UINT_RGBA_R_FLT(t), UINT_RGBA_G_FLT(t), UINT_RGBA_B_FLT(t), UINT_RGBA_A_FLT(t));
                 if (swidth < 0.0) {
-                        cairo_show_text (cr, _("R"));
+                        context->show_text (_("R"));
                 } else {
-                        cairo_show_text (cr, _("L"));
+                        context->show_text (_("L"));
                 }
         }
 
         /* right box */
 
-        cairo_rectangle (cr, 
-                         right - half_lr_box,
-                         half_lr_box+step_down, 
-                         lr_box_size, lr_box_size);
-        cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
-        cairo_stroke_preserve (cr);
-        cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
-       cairo_fill (cr);
+        rounded_rectangle (context, right - half_lr_box,
+                           half_lr_box+step_down, 
+                           lr_box_size, lr_box_size, corner_radius);
+        context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
+        context->stroke_preserve ();
+        context->set_source_rgba (UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
+       context->fill ();
 
         /* add text */
 
-        cairo_move_to (cr, 
-                       right - half_lr_box + 3,
-                       (lr_box_size/2)+step_down + 13);
-        cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(t), UINT_RGBA_G_FLT(t), UINT_RGBA_B_FLT(t), UINT_RGBA_A_FLT(t));
-
+        context->move_to (right - half_lr_box + 3, (lr_box_size/2)+step_down + 13);
+        context->set_source_rgba (UINT_RGBA_R_FLT(t), UINT_RGBA_G_FLT(t), UINT_RGBA_B_FLT(t), UINT_RGBA_A_FLT(t));
+        
         if (state == Mono) {
-                cairo_show_text (cr, _("M"));
+                context->show_text (_("M"));
         } else {
                 if (swidth < 0.0) {
-                        cairo_show_text (cr, _("L"));
+                        context->show_text (_("L"));
                 } else {
-                        cairo_show_text (cr, _("R"));
+                        context->show_text (_("R"));
                 }
         }
-
+        
         /* draw the central box */
 
-        cairo_set_line_width (cr, 1);
-       cairo_rectangle (cr, lrint (center - (pos_box_size/2.0)), top_step, pos_box_size, pos_box_size);
-        cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
-        cairo_stroke_preserve (cr);
-        cairo_set_source_rgba (cr, UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
-       cairo_fill (cr);
+        context->set_line_width (2.0);
+       context->move_to (center + (pos_box_size/2.0), top_step); /* top right */
+        context->rel_line_to (0.0, pos_box_size); /* lower right */
+        context->rel_line_to (-pos_box_size/2.0, 4.0); /* bottom point */
+        context->rel_line_to (-pos_box_size/2.0, -4.0); /* lower left */
+        context->rel_line_to (0.0, -pos_box_size); /* upper left */
+        context->close_path ();
 
-        /* done */
+        context->set_source_rgba (UINT_RGBA_R_FLT(o), UINT_RGBA_G_FLT(o), UINT_RGBA_B_FLT(o), UINT_RGBA_A_FLT(o));
+        context->stroke_preserve ();
+        context->set_source_rgba (UINT_RGBA_R_FLT(f), UINT_RGBA_G_FLT(f), UINT_RGBA_B_FLT(f), UINT_RGBA_A_FLT(f));
+       context->fill ();
 
-        cairo_destroy (cr);
        return true;
 }
 
@@ -325,7 +321,7 @@ StereoPanner::on_button_press_event (GdkEventButton* ev)
                         
                         /* upper section: adjusts position, constrained by width */
 
-                        const double w = width_control->get_value ();
+                        const double w = fabs (width_control->get_value ());
                         const double max_pos = 1.0 - (w/2.0);
                         const double min_pos = w/2.0;
 
@@ -343,8 +339,9 @@ StereoPanner::on_button_press_event (GdkEventButton* ev)
                                         /* 2ndary-double click on right, collapse to hard right */
                                         width_control->set_value (0);
                                         position_control->set_value (1.0);
+                                } else {
+                                        position_control->set_value (max_pos);
                                 }
-                                position_control->set_value (max_pos);
                         } else {
                                 position_control->set_value (0.5);
                         }
@@ -380,6 +377,7 @@ StereoPanner::on_button_press_event (GdkEventButton* ev)
                 if (ev->y < 20) {
                         /* top section of widget is for position drags */
                         dragging_position = true;
+                        StartPositionGesture ();
                 } else {
                         /* lower section is for dragging width */
                         
@@ -393,11 +391,19 @@ StereoPanner::on_button_press_event (GdkEventButton* ev)
                         const int half_box = lr_box_size/2;
                         
                         if (ev->x >= (left - half_box) && ev->x < (left + half_box)) {
-                                dragging_left = true;
+                                if (swidth < 0.0) {
+                                        dragging_right = true;
+                                } else {
+                                        dragging_left = true;
+                                }
                         } else if (ev->x >= (right - half_box) && ev->x < (right + half_box)) {
-                                dragging_right = true;
+                                if (swidth < 0.0) {
+                                        dragging_left = true;
+                                } else {
+                                        dragging_right = true;
+                                }
                         }
-                        
+                        StartWidthGesture ();
                 }
 
                 dragging = true;
@@ -413,6 +419,8 @@ StereoPanner::on_button_release_event (GdkEventButton* ev)
                 return false;
         }
 
+        bool dp = dragging_position;
+
         dragging = false;
         dragging_position = false;
         dragging_left = false;
@@ -428,10 +436,14 @@ StereoPanner::on_button_release_event (GdkEventButton* ev)
                 /* reset to default */
                 position_control->set_value (0.5);
                 width_control->set_value (1.0);
+        } else {
+                if (dp) {
+                        StopPositionGesture ();
+                } else {
+                        StopWidthGesture ();
+                }
         }
 
-        set_tooltip ();
-
         return true;
 }
 
@@ -480,6 +492,7 @@ StereoPanner::on_motion_notify_event (GdkEventMotion* ev)
 
         if (!drag_data_window) {
                 drag_data_window = new Window (WINDOW_POPUP);
+                drag_data_window->set_name (X_("ContrastingPopup"));
                 drag_data_window->set_position (WIN_POS_MOUSE);
                 drag_data_window->set_decorated (false);
                 
@@ -497,14 +510,16 @@ StereoPanner::on_motion_notify_event (GdkEventMotion* ev)
         }
 
         if (!drag_data_window->is_visible ()) {
-                /* move the window a little away from the mouse */
-                drag_data_window->move (ev->x_root+30, ev->y_root+30);
+                /* move the popup window vertically down from the panner display */
+                int rx, ry;
+                get_window()->get_origin (rx, ry);
+                drag_data_window->move (rx, ry+get_height());
                 drag_data_window->present ();
-                unset_tooltip ();
         }
 
         int w = get_width();
         double delta = (ev->x - last_drag_x) / (double) w;
+        double current_width = width_control->get_value ();
         
         if (dragging_left) {
                 delta = -delta;
@@ -514,7 +529,6 @@ StereoPanner::on_motion_notify_event (GdkEventMotion* ev)
 
                 /* maintain position as invariant as we change the width */
 
-                double current_width = width_control->get_value ();
 
                 /* create a detent close to the center */
 
@@ -633,16 +647,24 @@ StereoPanner::set_colors ()
         colors[Normal].outline = ARDOUR_UI::config()->canvasvar_StereoPannerOutline.get();
         colors[Normal].text = ARDOUR_UI::config()->canvasvar_StereoPannerText.get();
         colors[Normal].background = ARDOUR_UI::config()->canvasvar_StereoPannerBackground.get();
+        colors[Normal].rule = ARDOUR_UI::config()->canvasvar_StereoPannerRule.get();
 
         colors[Mono].fill = ARDOUR_UI::config()->canvasvar_StereoPannerMonoFill.get();
         colors[Mono].outline = ARDOUR_UI::config()->canvasvar_StereoPannerMonoOutline.get();
         colors[Mono].text = ARDOUR_UI::config()->canvasvar_StereoPannerMonoText.get();
         colors[Mono].background = ARDOUR_UI::config()->canvasvar_StereoPannerMonoBackground.get();
+        colors[Mono].rule = ARDOUR_UI::config()->canvasvar_StereoPannerRule.get();
 
         colors[Inverted].fill = ARDOUR_UI::config()->canvasvar_StereoPannerInvertedFill.get();
         colors[Inverted].outline = ARDOUR_UI::config()->canvasvar_StereoPannerInvertedOutline.get();
         colors[Inverted].text = ARDOUR_UI::config()->canvasvar_StereoPannerInvertedText.get();
         colors[Inverted].background = ARDOUR_UI::config()->canvasvar_StereoPannerInvertedBackground.get();
+        colors[Inverted].rule = ARDOUR_UI::config()->canvasvar_StereoPannerRule.get();
+}
 
-        color_change (); /* EMIT SIGNAL */
+void
+StereoPanner::color_handler ()
+{
+        set_colors ();
+        queue_draw ();
 }