[Rawstudio-commit] r3447 - trunk/librawstudio

[Klaus Post]

Author: post
Date: 2010-06-26 15:43:10 +0200 (Sat, 26 Jun 2010)
New Revision: 3447

Modified:
   trunk/librawstudio/rs-curve.c
Log:
Add help to curves.

Modified: trunk/librawstudio/rs-curve.c
===================================================================
--- trunk/librawstudio/rs-curve.c       2010-06-26 09:01:59 UTC (rev 3446)
+++ trunk/librawstudio/rs-curve.c       2010-06-26 13:43:10 UTC (rev 3447)
@@ -42,6 +42,8 @@
        RSColorSpace *display_color_space;
 
        gint last_width[2];
+       PangoLayout* help_layout;
+
 };
 
 struct _RSCurveWidgetClass
@@ -128,6 +130,12 @@
 
        curve->size_signal = g_signal_connect(curve, "size-allocate", 
G_CALLBACK(rs_curve_size_allocate), NULL);
        g_signal_connect(G_OBJECT(curve), "size-allocate", 
G_CALLBACK(rs_curve_widget_size_allocate), NULL);
+
+       /* Initialize help */
+       curve->help_layout = gtk_widget_create_pango_layout(GTK_WIDGET(curve), 
"Mouse button (MB)\nMB 1: New point\nMB 2: Load/Save/Reset Curve\nMB 3: Delete 
point");
+       PangoFontDescription *font_desc =   
pango_font_description_from_string("sans light 8");
+       pango_layout_set_font_description(curve->help_layout, font_desc);
+       pango_layout_context_changed(curve->help_layout);
 }
 
 /**
@@ -285,6 +293,7 @@
        if (curve->spline != NULL) {
                g_object_unref(curve->spline);
        }
+       g_object_unref(curve->help_layout);
 }
 
 /**
@@ -793,6 +802,16 @@
 
                /* Draw the curve */
                rs_curve_draw_spline(widget);
+               
+               /* Draw Help */
+               GdkDrawable *window = GDK_DRAWABLE(widget->window);
+               
+               if (window)
+               {
+                       /* Graphics context */
+                       GdkGC *gc = gdk_gc_new(window);
+                       gdk_draw_layout_with_colors(window, gc, 2, 2, 
curve->help_layout, &lightgrey, NULL);
+               }
        }
 }
   


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