Fixes for canvas and gain meter text not being scaled on startup

git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@3119 d708f5d6-7413-0410-9779-e7cbd77b26cf

gtk2_ardour/ardour_ui.cc

@@ -244,7 +244,7 @@ ARDOUR_UI::ARDOUR_UI (int *argcp, char **argvp[])
 
 	keyboard = new Keyboard;
 
-	gtk_settings_set_long_property (gtk_settings_get_default(), "gtk-xft-dpi", Config->get_font_scale(), "ardour");
+	reset_dpi();
 
 	starting.connect (mem_fun(*this, &ARDOUR_UI::startup));
 	stopping.connect (mem_fun(*this, &ARDOUR_UI::shutdown));
@@ -632,7 +632,6 @@ ARDOUR_UI::startup ()
 	}
 	
 	BootMessage (_("Ardour is ready for use"));
-
 	show ();
 }
 

gtk2_ardour/ardour_ui.h

@@ -98,6 +98,7 @@ namespace ALSA {
 #define FRAME_NAME "BaseFrame"
 
 extern sigc::signal<void>  ColorsChanged;
+extern sigc::signal<void>  DPIReset;
 
 class ARDOUR_UI : public Gtkmm2ext::UI
 {

gtk2_ardour/ardour_ui2.cc

@@ -880,6 +880,7 @@ ARDOUR_UI::editor_realized ()
 	set_size_request_to_display_given_text (speed_display_box, _("-0.55"), 2, 2);
 	const guint32 FUDGE = 25; // Combo's are stupid - they steal space from the entry for the button
 	set_size_request_to_display_given_text (shuttle_style_button, _("sprung"), 2+FUDGE, 10);
+	reset_dpi();
 }
 
 void

gtk2_ardour/gain_meter.cc

@@ -206,7 +206,8 @@ GainMeter::GainMeter (boost::shared_ptr<IO> io, Session& s)
 	ResetGroupPeakDisplays.connect (mem_fun(*this, &GainMeter::reset_group_peak_display));
 
 	UI::instance()->theme_changed.connect (mem_fun(*this, &GainMeter::on_theme_changed));
-	ColorsChanged.connect (mem_fun (*this, &GainMeter::color_handler));
+	ColorsChanged.connect (bind(mem_fun (*this, &GainMeter::color_handler), false));
+	DPIReset.connect (bind(mem_fun (*this, &GainMeter::color_handler), true));
 	//hide_all();
 }
 
@@ -288,7 +289,7 @@ GainMeter::meter_metrics_expose (GdkEventExpose *ev)
 	Glib::RefPtr<Gdk::Pixmap> pixmap;
 	std::map<string,Glib::RefPtr<Gdk::Pixmap> >::iterator i = metric_pixmaps.find (meter_metric_area.get_name());
 
-	if (i == metric_pixmaps.end() || style_changed) {
+	if (i == metric_pixmaps.end() || style_changed || dpi_changed) {
 		pixmap = render_metrics (meter_metric_area);
 	} else {
 		pixmap = i->second;
@@ -965,8 +966,9 @@ void GainMeter::clear_meters ()
 	}
 }
 
-void GainMeter::color_handler()
+void GainMeter::color_handler(bool dpi)
 {
 	color_changed = true;
+	dpi_changed = (dpi) ? true : false;
 	setup_meters();
 }

gtk2_ardour/gain_meter.h

@@ -192,8 +192,9 @@ class GainMeter : public Gtk::VBox
 
 	void on_theme_changed ();
 	bool style_changed;
+	bool dpi_changed;
 	bool color_changed;
-	void color_handler();
+	void color_handler(bool);
 };
 
 #endif /* __ardour_gtk_gain_meter_h__ */

gtk2_ardour/option_editor.cc

@@ -46,6 +46,7 @@
 #include "option_editor.h"
 #include "midi_port_dialog.h"
 #include "gui_thread.h"
+#include "utils.h"
 
 #include "i18n.h"
 
@@ -252,25 +253,6 @@ OptionEditor::add_session_paths ()
 	session_raid_entry.set_text(session->raid_path());
 }
 
-static void
-reset_dpi ()
-{
-	long val = Config->get_font_scale();
-
-	/* FT2 rendering */
-
-	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);
-	
-	/* Xft rendering */
-
-	gtk_settings_set_long_property (gtk_settings_get_default(),
-					"gtk-xft-dpi", val, "ardour");
-}
-
 static void
 font_scale_changed (Gtk::Adjustment* adj)
 {

gtk2_ardour/region_gain_line.cc

@@ -59,7 +59,7 @@ AudioRegionGainLine::view_to_model_y (double& y)
 void
 AudioRegionGainLine::model_to_view_y (double& y)
 {
-	if (y < 0) y == 0;
+	if (y < 0) y = 0;
 
 	y = gain_to_slider_position (y);
 }

gtk2_ardour/region_view.cc

@@ -143,7 +143,7 @@ RegionView::init (Gdk::Color& basic_color, bool wfd)
 	set_colors ();
 
 	ColorsChanged.connect (mem_fun (*this, &RegionView::color_handler));
-
+	set_pango_fontsize();
 	/* XXX sync mark drag? */
 }
 

gtk2_ardour/utils.cc

@@ -17,6 +17,9 @@
 
 */
 
+#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>
@@ -31,6 +34,7 @@
 
 #include <gtkmm2ext/utils.h>
 #include <ardour/ardour.h>
+#include <ardour/configuration.h>
 
 #include "ardour_ui.h"
 #include "keyboard.h"
@@ -45,6 +49,8 @@ using namespace sigc;
 using namespace Glib;
 using namespace PBD;
 
+sigc::signal<void>  DPIReset;
+
 int
 pixel_width (const ustring& str, Pango::FontDescription& font)
 {
@@ -692,6 +698,29 @@ key_is_legal_for_numeric_entry (guint keyval)
 
 	return false;
 }
+void
+set_pango_fontsize ()
+{
+	long val = ARDOUR::Config->get_font_scale();
 
+	/* FT2 rendering */
 
+	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
+}
 

gtk2_ardour/utils.h

@@ -83,5 +83,7 @@ static std::map<std::string, Glib::RefPtr<Gdk::Pixbuf> > xpm_map;
 const char* const *get_xpm_data (std::string path);
 std::string longest (std::vector<std::string>&);
 bool key_is_legal_for_numeric_entry (guint keyval);
+void reset_dpi ();
+void set_pango_fontsize ();
 
 #endif /* __ardour_gtk_utils_h__ */