send control now has working metering, and switches back and forth between busses...
[ardour.git] / gtk2_ardour / utils.cc
index 887494829eab97dbc8c4fd3102cd1bc029e6233d..9378b6727c1cb4dfc9acb2bd4edf408dba1427d1 100644 (file)
@@ -1,7 +1,7 @@
 /*
     Copyright (C) 2003 Paul Davis 
 
-    This program is free software; you can redistribute it and/or modify
+    This program is free software; you an redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id$
 */
 
+#include <pango/pangoft2.h> // for fontmap resolution control for GnomeCanvas
+#include <pango/pangocairo.h> // for fontmap resolution control for GnomeCanvas
+
 #include <cstdlib>
 #include <cctype>
 #include <fstream>
 #include <sys/stat.h>
 #include <libart_lgpl/art_misc.h>
+#include <gtkmm/rc.h>
 #include <gtkmm/window.h>
 #include <gtkmm/combo.h>
 #include <gtkmm/label.h>
 #include <gtkmm/paned.h>
 #include <gtk/gtkpaned.h>
 
+#include "pbd/file_utils.h"
+
 #include <gtkmm2ext/utils.h>
-#include <ardour/ardour.h>
+#include "ardour/configuration.h"
+#include "ardour/configuration.h"
+
+#include "ardour/filesystem_paths.h"
 
 #include "ardour_ui.h"
 #include "keyboard.h"
@@ -45,6 +53,22 @@ using namespace sigc;
 using namespace Glib;
 using namespace PBD;
 
+sigc::signal<void>  DPIReset;
+
+int
+pixel_width (const ustring& str, Pango::FontDescription& font)
+{
+       Label foo;
+       Glib::RefPtr<Pango::Layout> layout = foo.create_pango_layout ("");
+
+       layout->set_font_description (font);
+       layout->set_text (str);
+
+       int width, height;
+       Gtkmm2ext::get_ink_pixel_size (layout, width, height);
+       return width;
+}
+
 ustring
 fit_to_pixels (const ustring& str, int pixel_width, Pango::FontDescription& font, int& actual_width, bool with_ellipses)
 {
@@ -92,7 +116,7 @@ fit_to_pixels (const ustring& str, int pixel_width, Pango::FontDescription& font
 gint
 just_hide_it (GdkEventAny *ev, Gtk::Window *win)
 {
-       win->hide_all ();
+       win->hide ();
        return TRUE;
 }
 
@@ -120,7 +144,7 @@ xpm2rgb (const char** xpm, uint32_t& w, uint32_t& h)
                return 0;
        }
 
-       savergb = rgb = (unsigned char*)art_alloc (h * w * 3);
+       savergb = rgb = (unsigned char*) malloc (h * w * 3);
        
        // LOAD XPM COLORMAP LONG ENOUGH TO DO CONVERSION
        for (t = 0; t < colors; ++t) {
@@ -163,7 +187,7 @@ xpm2rgba (const char** xpm, uint32_t& w, uint32_t& h)
                return 0;
        }
 
-       savergb = rgb = (unsigned char*)art_alloc (h * w * 4);
+       savergb = rgb = (unsigned char*) malloc (h * w * 4);
        
        // LOAD XPM COLORMAP LONG ENOUGH TO DO CONVERSION
 
@@ -221,7 +245,7 @@ get_canvas_points (string who, uint32_t npoints)
        return new ArdourCanvas::Points (npoints);
 }
 
-Pango::FontDescription
+Pango::FontDescription*
 get_font_for_style (string widgetname)
 {
        Gtk::Window window (WINDOW_TOPLEVEL);
@@ -233,7 +257,21 @@ get_font_for_style (string widgetname)
        foobar.ensure_style();
 
        style = foobar.get_style ();
-       return style->get_font();
+
+       Glib::RefPtr<const Pango::Layout> layout = foobar.get_layout();
+       
+       PangoFontDescription *pfd = (PangoFontDescription *)pango_layout_get_font_description((PangoLayout *)layout->gobj());
+       
+       if (!pfd) {
+               
+               /* layout inherited its font description from a PangoContext */
+
+               PangoContext* ctxt = (PangoContext*) pango_layout_get_context ((PangoLayout*) layout->gobj());
+               pfd =  pango_context_get_font_description (ctxt);
+               return new Pango::FontDescription (pfd, true); /* make a copy */
+       } 
+
+       return new Pango::FontDescription (pfd, true); /* make a copy */
 }
 
 uint32_t
@@ -263,6 +301,7 @@ rgba_from_style (string style, uint32_t r, uint32_t g, uint32_t b, uint32_t a, s
                        r = waverc->fg[state].red / 257;
                        g = waverc->fg[state].green / 257;
                        b = waverc->fg[state].blue / 257;
                        /* what a hack ... "a" is for "active" */
                        if (state == Gtk::STATE_NORMAL && rgba) {
                                a = waverc->fg[GTK_STATE_ACTIVE].red / 257;
@@ -294,6 +333,112 @@ rgba_from_style (string style, uint32_t r, uint32_t g, uint32_t b, uint32_t a, s
        }
 }
 
+
+Gdk::Color
+color_from_style (string widget_style_name, int state, string attr)
+{
+       GtkStyle* style;
+
+       style = gtk_rc_get_style_by_paths (gtk_settings_get_default(),
+                                          widget_style_name.c_str(),
+                                          0, G_TYPE_NONE);
+
+       if (!style) {
+               error << string_compose (_("no style found for %1, using red"), style) << endmsg;
+               return Gdk::Color ("red");
+       }
+
+       if (attr == "fg") {
+               return Gdk::Color (&style->fg[state]);
+       }
+
+       if (attr == "bg") {
+               return Gdk::Color (&style->bg[state]);
+       }
+
+       if (attr == "light") {
+               return Gdk::Color (&style->light[state]);
+       }
+
+       if (attr == "dark") {
+               return Gdk::Color (&style->dark[state]);
+       }
+
+       if (attr == "mid") {
+               return Gdk::Color (&style->mid[state]);
+       }
+
+       if (attr == "text") {
+               return Gdk::Color (&style->text[state]);
+       }
+
+       if (attr == "base") {
+               return Gdk::Color (&style->base[state]);
+       }
+
+       if (attr == "text_aa") {
+               return Gdk::Color (&style->text_aa[state]);
+       }
+
+       error << string_compose (_("unknown style attribute %1 requested for color; using \"red\""), attr) << endmsg;
+       return Gdk::Color ("red");
+}
+
+Glib::RefPtr<Gdk::GC>
+gc_from_style (string widget_style_name, int state, string attr)
+{
+        GtkStyle* style;
+
+        style = gtk_rc_get_style_by_paths (gtk_settings_get_default(),
+                                           widget_style_name.c_str(),
+                                           0, G_TYPE_NONE);
+
+        if (!style) {
+                error << string_compose (_("no style found for %1, using red"), style) << endmsg;
+               Glib::RefPtr<Gdk::GC> ret = Gdk::GC::create();
+               ret->set_rgb_fg_color(Gdk::Color("red"));
+                return ret;
+        }
+
+        if (attr == "fg") {
+                return Glib::wrap(style->fg_gc[state]);
+        }
+
+        if (attr == "bg") {
+                return Glib::wrap(style->bg_gc[state]);
+        }
+
+        if (attr == "light") {
+                return Glib::wrap(style->light_gc[state]);
+        }
+
+        if (attr == "dark") {
+                return Glib::wrap(style->dark_gc[state]);
+        }
+
+        if (attr == "mid") {
+                return Glib::wrap(style->mid_gc[state]);
+        }
+
+        if (attr == "text") {
+                return Glib::wrap(style->text_gc[state]);
+        }
+
+        if (attr == "base") {
+                return Glib::wrap(style->base_gc[state]);
+        }
+
+        if (attr == "text_aa") {
+                return Glib::wrap(style->text_aa_gc[state]);
+        }
+
+        error << string_compose (_("unknown style attribute %1 requested for color; using \"red\""), attr) << endmsg;
+       Glib::RefPtr<Gdk::GC> ret = Gdk::GC::create();
+       ret->set_rgb_fg_color(Gdk::Color("red"));
+        return ret;
+}
+
+
 bool 
 canvas_item_visible (ArdourCanvas::Item* item)
 {
@@ -306,28 +451,46 @@ set_color (Gdk::Color& c, int rgb)
        c.set_rgb((rgb >> 16)*256, ((rgb & 0xff00) >> 8)*256, (rgb & 0xff)*256);
 }
 
+#ifdef GTKOSX
+extern "C" {
+       gboolean gdk_quartz_possibly_forward (GdkEvent*);
+}
+#endif
+
 bool
 key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey* ev)
 {
        GtkWindow* win = window.gobj();
        GtkWidget* focus = gtk_window_get_focus (win);
        bool special_handling_of_unmodified_accelerators = false;
+       bool allow_activating = true;
 
-#undef  DEBUG_ACCELERATOR_HANDLING
+#undef DEBUG_ACCELERATOR_HANDLING
 #ifdef  DEBUG_ACCELERATOR_HANDLING
-       bool debug = (getenv ("ARDOUR_DEBUG_ACCELERATOR_HANDLING") != 0);
+       //bool debug = (getenv ("ARDOUR_DEBUG_ACCELERATOR_HANDLING") != 0);
+       bool debug=true;
 #endif
-
        if (focus) {
-               if (GTK_IS_ENTRY(focus)) {
+               if (GTK_IS_ENTRY(focus) || Keyboard::some_magic_widget_has_focus()) {
                        special_handling_of_unmodified_accelerators = true;
                } 
        } 
 
+#ifdef GTKOSX
+       /* should this be universally true? */
+       if (Keyboard::some_magic_widget_has_focus ()) {
+               allow_activating = false;
+       }
+#endif
+
 #ifdef DEBUG_ACCELERATOR_HANDLING
        if (debug) {
-               cerr << "Key event: code = " << ev->keyval << " state = " << hex << ev->state << dec << " focus is an entry ? " 
+               cerr << "Win = " << win << " Key event: code = " << ev->keyval << " state = " << hex << ev->state << dec << " special handling ? " 
                     << special_handling_of_unmodified_accelerators
+                    << " magic widget focus ? "
+                    << Keyboard::some_magic_widget_has_focus()
+                    << " allow_activation ? "
+                    << allow_activating
                     << endl;
        }
 #endif
@@ -371,71 +534,91 @@ key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey* ev)
                   it does allow.
                */
 
-               int ret = false;
-
-               switch (ev->keyval) {
-               case GDK_Up:
-                       ret = gtk_accel_groups_activate(G_OBJECT(win), GDK_uparrow, GdkModifierType(ev->state));
-                       break;
+               uint32_t fakekey = ev->keyval;
 
-               case GDK_Down:
-                       ret = gtk_accel_groups_activate(G_OBJECT(win), GDK_downarrow, GdkModifierType(ev->state));
-                       break;
+               if (possibly_translate_keyval_to_make_legal_accelerator (fakekey)) {
+                       if (allow_activating && gtk_accel_groups_activate(G_OBJECT(win), fakekey, GdkModifierType(ev->state))) {
+                               return true;
+                       }
 
-               case GDK_Right:
-                       ret = gtk_accel_groups_activate(G_OBJECT(win), GDK_rightarrow, GdkModifierType(ev->state));
-                       break;
+#ifdef GTKOSX
+                       if (allow_activating) {
+                               int oldval = ev->keyval;
+                               ev->keyval = fakekey;
+                               if (gdk_quartz_possibly_forward ((GdkEvent*) ev)) {
+                                       return true;
+                               }
+                               ev->keyval = oldval;
+                       }
+#endif
+               }
+       }
 
-               case GDK_Left:
-                       ret = gtk_accel_groups_activate(G_OBJECT(win), GDK_leftarrow, GdkModifierType(ev->state));
-                       break;
+       /* consider all relevant modifiers but not LOCK or SHIFT */
 
-               default:
-                       break;
-               }
+       guint mask = (Keyboard::RelevantModifierKeyMask & ~(Gdk::SHIFT_MASK|Gdk::LOCK_MASK));
 
-               if (ret) {
-                       return true;
-               }
-       }
-               
-       if (!special_handling_of_unmodified_accelerators ||
-           ev->state & (Gdk::MOD1_MASK|
-                        Gdk::MOD3_MASK|
-                        Gdk::MOD4_MASK|
-                        Gdk::MOD5_MASK|
-                        Gdk::CONTROL_MASK)) {
+       if (!special_handling_of_unmodified_accelerators || (ev->state & mask)) {
 
-               /* no special handling or modifiers in effect: accelerate first */
+               /* no special handling or there are modifiers in effect: accelerate first */
 
 #ifdef DEBUG_ACCELERATOR_HANDLING
                if (debug) {
                        cerr << "\tactivate, then propagate\n";
                }
 #endif
-               if (!gtk_window_activate_key (win, ev)) {
-                       return gtk_window_propagate_key_event (win, ev);
-               } else {
+
+               if (allow_activating) {
+#ifdef GTKOSX
+                       if (gdk_quartz_possibly_forward ((GdkEvent*) ev)) {
+                               return true;
+                       }
+#endif
+                       if (gtk_window_activate_key (win, ev)) {
+                               return true;
+                       }
+               }
+
 #ifdef DEBUG_ACCELERATOR_HANDLING
                if (debug) {
-                       cerr << "\tnot handled\n";
+                       cerr << "\tnot accelerated, now propagate\n";
                }
 #endif
-                       return true;
-               } 
+               return gtk_window_propagate_key_event (win, ev);
        }
        
        /* no modifiers, propagate first */
        
+#ifdef DEBUG_ACCELERATOR_HANDLING
+       if (debug) {
+               cerr << "\tpropagate, then activate\n";
+       }
+#endif
+       if (!gtk_window_propagate_key_event (win, ev)) {
 #ifdef DEBUG_ACCELERATOR_HANDLING
                if (debug) {
-                       cerr << "\tactivate, then propagate\n";
+                       cerr << "\tpropagation didn't handle, so activate\n";
                }
 #endif
-       if (!gtk_window_propagate_key_event (win, ev)) {
-               return gtk_window_activate_key (win, ev);
-       } 
 
+               if (allow_activating) {
+                       
+#ifdef GTKOSX
+                       if (gdk_quartz_possibly_forward ((GdkEvent*) ev)) {
+                               return true;
+                       }
+#endif
+                       return gtk_window_activate_key (win, ev);
+               } 
+                       
+       } else {
+#ifdef DEBUG_ACCELERATOR_HANDLING
+               if (debug) {
+                       cerr << "\thandled by propagate\n";
+               }
+#endif
+               return true;
+       }
 
 #ifdef DEBUG_ACCELERATOR_HANDLING
        if (debug) {
@@ -449,26 +632,56 @@ Glib::RefPtr<Gdk::Pixbuf>
 get_xpm (std::string name)
 {
        if (!xpm_map[name]) {
-               xpm_map[name] = Gdk::Pixbuf::create_from_file (ARDOUR::find_data_file(name, "pixmaps"));
-       }
+
+               SearchPath spath(ARDOUR::ardour_search_path());
+               spath += ARDOUR::system_data_search_path();
+               
+               spath.add_subdirectory_to_paths("pixmaps");
                
-       return (xpm_map[name]);
+               sys::path data_file_path;
+               
+               if(!find_file_in_search_path (spath, name, data_file_path)) {
+                       fatal << string_compose (_("cannot find XPM file for %1"), name) << endmsg;
+               }
+               
+               try {
+                       xpm_map[name] =  Gdk::Pixbuf::create_from_file (data_file_path.to_string());
+               } catch(const Glib::Error& e)   {
+                       warning << "Caught Glib::Error: " << e.what() << endmsg;
+               }
+       }
+
+       return xpm_map[name];
 }
 
+
 Glib::RefPtr<Gdk::Pixbuf>      
 get_icon (const char* cname)
 {
        string name = cname;
        name += X_(".png");
 
-       string path = ARDOUR::find_data_file (name, "icons");
+       SearchPath spath(ARDOUR::ardour_search_path());
+       spath += ARDOUR::system_data_search_path();
+
+       spath.add_subdirectory_to_paths("icons");
+
+       sys::path data_file_path;
 
-       if (path.empty()) {
+       if (!find_file_in_search_path (spath, name, data_file_path)) {
                fatal << string_compose (_("cannot find icon image for %1"), name) << endmsg;
-               /*NOTREACHED*/
        }
 
-       return Gdk::Pixbuf::create_from_file (path);
+       Glib::RefPtr<Gdk::Pixbuf> img;
+       try {
+               img = Gdk::Pixbuf::create_from_file (data_file_path.to_string());
+       } catch (const Gdk::PixbufError &e) {
+               cerr << "Caught PixbufError: " << e.what() << endl;
+       } catch (...) {
+               g_message("Caught ... ");
+       }
+
+       return img;
 }
 
 string
@@ -546,4 +759,68 @@ key_is_legal_for_numeric_entry (guint keyval)
 
        return false;
 }
+void
+set_pango_fontsize ()
+{
+       long val = ARDOUR::Config->get_font_scale();
 
+       /* FT2 rendering - used by GnomeCanvas, sigh */
+
+       pango_ft2_font_map_set_resolution ((PangoFT2FontMap*) pango_ft2_font_map_for_display(), val/1024, val/1024);
+
+       /* Cairo rendering, in case there is any */
+       
+       pango_cairo_font_map_set_resolution ((PangoCairoFontMap*) pango_cairo_font_map_get_default(), val/1024);
+}
+
+void
+reset_dpi ()
+{
+       long val = ARDOUR::Config->get_font_scale();
+       set_pango_fontsize ();
+       /* Xft rendering */
+
+       gtk_settings_set_long_property (gtk_settings_get_default(),
+                                       "gtk-xft-dpi", val, "ardour");
+       DPIReset();//Emit Signal
+}
+
+bool
+possibly_translate_keyval_to_make_legal_accelerator (uint32_t& keyval)
+{
+       int fakekey = GDK_VoidSymbol;
+
+       switch (keyval) {
+       case GDK_Tab:
+       case GDK_ISO_Left_Tab:
+               fakekey = GDK_nabla;
+               break;
+               
+       case GDK_Up:
+               fakekey = GDK_uparrow;
+               break;
+               
+       case GDK_Down:
+               fakekey = GDK_downarrow;
+               break;
+               
+       case GDK_Right:
+               fakekey = GDK_rightarrow;
+               break;
+               
+       case GDK_Left:
+               fakekey = GDK_leftarrow;
+               break;
+               
+       default:
+               break;
+       }
+       
+       if (fakekey != GDK_VoidSymbol) {
+               keyval = fakekey;
+               return true;
+       } 
+
+       return false;
+}
+