From cb8ae16bf1a0c8f83224683aec74d110c3f9fa10 Mon Sep 17 00:00:00 2001
From: Kaj-Michael Lang <milang@onion.tal.org>
Date: Thu, 11 Oct 2007 12:42:42 +0300
Subject: [PATCH] Small optimizations to gps sky/signal widget

---
 src/gtkgps.c | 62 +++++++++++++++++++++++++---------------------------
 1 file changed, 30 insertions(+), 32 deletions(-)

diff --git a/src/gtkgps.c b/src/gtkgps.c
index dc494ed..730e7b2 100644
--- a/src/gtkgps.c
+++ b/src/gtkgps.c
@@ -97,8 +97,6 @@ switch (prop_id) {
 static void
 gtk_gps_init(GtkGps *gps)
 {
-g_printf("%s()\n", __PRETTY_FUNCTION__);
-
 gps->gc_w=NULL;
 gps->gc_s=NULL;
 gps->gc_sf=NULL;
@@ -172,8 +170,6 @@ gtk_gps_size_request(GtkWidget	*widget, GtkRequisition *requisition)
 {
 GtkGps *gps;
 
-g_printf("%s()\n", __PRETTY_FUNCTION__);
-	
 g_return_if_fail(GTK_IS_GPS(widget));
 g_return_if_fail(requisition!=NULL);
 	
@@ -281,8 +277,6 @@ gfloat tmp;
 gchar buffer[16];
 guint line[12]={0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330};
 
-g_printf("%s()\n", __PRETTY_FUNCTION__);
-
 widget=GTK_WIDGET(gps);
 
 g_return_if_fail(gps->data);
@@ -323,21 +317,24 @@ gdk_draw_arc(widget->window,
 	     xoffset + size / 6 * 2, yoffset + size / 6 * 2,
 	     size / 6 * 2, size / 6 * 2, 0, 64 * 360);
 
-for (i = 0; i < 6; i++) {
-	/* line */
+for (i = 0; i < 12; i++) {
+	gfloat sint, cost;
+
 	tmp = (line[i] * (1.f / 180.f)) * G_PI;
+	sint=sinf(tmp);
+	cost=cosf(tmp);
+	/* line */
 	gdk_draw_line(widget->window,
 		      widget->style->fg_gc[GTK_WIDGET_STATE(widget)],
-		      xoffset + halfsize + (halfsize - 2) * sinf(tmp),
-		      yoffset + halfsize - (halfsize - 2) * cosf(tmp),
-		      xoffset + halfsize - (halfsize - 2) * sinf(tmp),
-		      yoffset + halfsize + (halfsize - 2) * cosf(tmp));
-}
+		      xoffset + halfsize + (halfsize - 2) * sint,
+		      yoffset + halfsize - (halfsize - 2) * cost,
+		      xoffset + halfsize - (halfsize - 2) * sint,
+		      yoffset + halfsize + (halfsize - 2) * cost);
+
+	/* Skip angle text if there is no space */
+	if (size<100)
+		continue;
 
-if (size>100) {
-for (i = 0; i < 12; i++) {
-	tmp = (line[i] * (1.f / 180.f)) * G_PI;
-	/* azimuth */
 	if (line[i] == 0)
 		g_snprintf(buffer, 16, "N");
 	else
@@ -345,27 +342,28 @@ for (i = 0; i < 12; i++) {
 	pango_layout_set_text(gps->layout, buffer, -1);
 	pango_layout_get_pixel_size(gps->layout, &x, &y);
 	gdk_draw_layout(widget->window,	widget->style->fg_gc[GTK_STATE_NORMAL],
-			(xoffset + halfsize + (halfsize - size / 12) * sinf(tmp)) - x / 2,
-			(yoffset + halfsize - (halfsize - size / 12) * cosf(tmp)) - y / 2,
+			(xoffset + halfsize + (halfsize - size / 12) * sint) - x / 2,
+			(yoffset + halfsize - (halfsize - size / 12) * cost) - y / 2,
 			gps->layout);
+
 }
 
-/* elevation 30 */
-tmp = (30 * (1.f / 180.f)) * G_PI;
-g_snprintf(buffer, 16, "30°");
-pango_layout_set_text(gps->layout, buffer, -1);
-pango_layout_get_pixel_size(gps->layout, &x, &y);
-gdk_draw_layout(widget->window,	widget->style->fg_gc[GTK_STATE_NORMAL],
+if (size>100) {
+	tmp = (30 * (1.f / 180.f)) * G_PI;
+	/* elevation 30 */
+	g_snprintf(buffer, 16, "30°");
+	pango_layout_set_text(gps->layout, buffer, -1);
+	pango_layout_get_pixel_size(gps->layout, &x, &y);
+	gdk_draw_layout(widget->window,	widget->style->fg_gc[GTK_STATE_NORMAL],
 		(xoffset + halfsize + size / 6 * 2 * sinf(tmp)) - x / 2,
 		(yoffset + halfsize - size / 6 * 2 * cosf(tmp)) - y / 2,
 		gps->layout);
 
-/* elevation 60 */
-tmp = (30 * (1.f / 180.f)) * G_PI;
-g_snprintf(buffer, 16, "60°");
-pango_layout_set_text(gps->layout, buffer, -1);
-pango_layout_get_pixel_size(gps->layout, &x, &y);
-gdk_draw_layout(widget->window, widget->style->fg_gc[GTK_STATE_NORMAL],
+	/* elevation 60 */
+	g_snprintf(buffer, 16, "60°");
+	pango_layout_set_text(gps->layout, buffer, -1);
+	pango_layout_get_pixel_size(gps->layout, &x, &y);
+	gdk_draw_layout(widget->window, widget->style->fg_gc[GTK_STATE_NORMAL],
 		(xoffset + halfsize + size / 6 * sinf(tmp)) - x / 2,
 		(yoffset + halfsize - size / 6 * cosf(tmp)) - y / 2, 
 		gps->layout);
@@ -508,5 +506,5 @@ GtkGps *gps;
 g_return_if_fail(GTK_IS_GPS(widget));
 
 gps=GTK_GPS(widget);
-gtk_gps_paint_by_mode(gps);
+gtk_widget_queue_draw_area(widget, 0, 0, gps->width, gps->height);
 }
-- 
2.39.5