EricDock first commit... testing styled windows

diff --git a/.eric_window.h.swp b/.eric_window.h.swp
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diff --git a/.main.c.swp b/.main.c.swp
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Binary files /dev/null and b/.main.c.swp differ

diff --git a/Makefile b/Makefile
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+++ b/Makefile
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+ericwindow-test: main.c
+       gcc -o ericwindow-test `pkg-config --cflags --libs gtk+-3.0` main.c

diff --git a/eric_window.h b/eric_window.h
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+++ b/eric_window.h
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+/*
+ * eric_window.h
+ * creates a transluscent window using the current theme color
+ */
+
+#pragma once
+
+#include <gtk/gtk.h>
+#include <gdk/gdk.h>
+#include <gio/gio.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+/*
+ * TODO: add text color
+ */
+
+typedef struct
+{
+    GtkWidget* window;
+    GdkRGBA background_color;
+    GdkRGBA background_color_old;
+    GdkRGBA background_color_new;
+    double background_change_percentage;
+} eric_window;
+
+static void gdk_color_lerp( GdkRGBA* c1, GdkRGBA* c2, double s, GdkRGBA* out )
+{
+       out->red = c1->red + ( c2->red - c1->red ) * s; 
+       out->green = c1->green + ( c2->green - c1->green ) * s; 
+       out->blue = c1->blue + ( c2->blue - c1->blue ) * s;     
+       out->alpha = c1->alpha + ( c2->alpha - c1->alpha ) * s; 
+}
+
+static gboolean eric_window_animation_timer( eric_window* w )
+{
+       w->background_change_percentage += 0.05;
+       gdk_color_lerp( &w->background_color_old, &w->background_color_new, 
+                        w->background_change_percentage, &w->background_color);
+       gtk_widget_queue_draw( w->window );
+
+       if( w->background_change_percentage >= 1.0 ) return FALSE;
+
+       return TRUE;
+}
+
+static gboolean eric_window_draw( GtkWidget* widget, cairo_t* cr, eric_window* w )
+{
+       cairo_set_operator(cr,CAIRO_OPERATOR_SOURCE);
+       w->background_color.alpha = 0.75;
+       gdk_cairo_set_source_rgba( cr, &w->background_color );
+       cairo_paint( cr );      
+       
+    return FALSE;
+}
+
+
+static void eric_window_screen_changed( GtkWidget *widget, GdkScreen *old_screen, gpointer userdata )
+{
+    GdkVisual *visual;
+       
+       GdkScreen* screen=gtk_widget_get_screen(widget);
+       if(!screen) return;
+
+       visual = gdk_screen_get_rgba_visual(screen);
+       if(visual==NULL) visual=gdk_screen_get_system_visual(screen);
+
+       gtk_widget_set_visual(widget,visual);
+}
+
+void eric_window_gsettings_value_changed( GSettings *settings, const gchar *key, eric_window* w )
+{
+    if( strcmp( key, "primary-color" ) == 0 )
+    {
+        w->background_color_old = w->background_color;
+        gdk_rgba_parse( &w->background_color_new, g_settings_get_string( settings, "primary-color" ) );
+        
+        w->background_change_percentage = 0.0;
+        g_timeout_add( 32, (gpointer)eric_window_animation_timer, w );
+    }
+}
+
+eric_window* eric_window_create( int width, int height, char* title )
+{
+    eric_window* w = malloc( sizeof( eric_window ) );
+
+    if( title == NULL )
+        title = "eric window";
+
+       w->window = gtk_window_new( GTK_WINDOW_TOPLEVEL );
+    gtk_window_set_title( GTK_WINDOW( w->window ), title );
+       gtk_window_resize( GTK_WINDOW( w->window ), width, height );
+       gtk_widget_add_events( w->window, GDK_STRUCTURE_MASK );
+
+    gtk_widget_set_app_paintable( w->window, TRUE );
+
+    g_signal_connect( G_OBJECT( w->window ), "draw", G_CALLBACK(eric_window_draw), &w );
+    g_signal_connect( G_OBJECT( w->window ), "screen-changed", G_CALLBACK(eric_window_screen_changed), &w );
+       g_signal_connect( G_OBJECT( w->window ), "delete-event", gtk_main_quit, NULL );
+
+    eric_window_screen_changed( w->window, NULL, NULL );
+
+    /* GSettings Stuff */
+    GSettings* gsettings;
+    GSettingsSchema* gsettings_schema;
+
+    gsettings_schema = g_settings_schema_source_lookup( g_settings_schema_source_get_default(),
+                                                "org.gnome.desktop.background",
+                                                TRUE );
+    if( gsettings_schema )
+    {
+        g_settings_schema_unref (gsettings_schema);
+        gsettings_schema = NULL;
+        gsettings = g_settings_new ( "org.gnome.desktop.background" );
+    }
+
+    g_signal_connect_data( gsettings, "changed", G_CALLBACK( eric_window_gsettings_value_changed ), NULL, 0, 0 );
+    gdk_rgba_parse( &w->background_color, g_settings_get_string( gsettings, "primary-color" ) );
+    printf( "COLOR: %s\n", g_settings_get_string( gsettings, "primary-color" ) );
+
+    return w;
+}

diff --git a/ericwindow-test b/ericwindow-test
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Binary files /dev/null and b/ericwindow-test differ

diff --git a/main.c b/main.c
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+++ b/main.c
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+#include "eric_window.h"
+
+int main( int argc, char* argv[] )
+{
+    gtk_init( &argc, &argv );
+
+    eric_window* w = eric_window_create( 640, 480, "Test Eric Window So Kawaii" );
+
+    gtk_widget_show_all( w->window );
+    gtk_main();
+
+    return 0;
+}