X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fgtkmm2ext%2Ffastmeter.cc;h=c144a963bbd673df7e6734a1b998140f3a8278c6;hb=0eb509ac2e023b556a43017c0d018be972b10673;hp=df3f09735e8be6c002e7dc953a398debe4f95396;hpb=8c9749e42faf7808034ed8b7afce4a2fe6dc6f33;p=ardour.git

diff --git a/libs/gtkmm2ext/fastmeter.cc b/libs/gtkmm2ext/fastmeter.cc
index df3f09735e..c144a963bb 100644
--- a/libs/gtkmm2ext/fastmeter.cc
+++ b/libs/gtkmm2ext/fastmeter.cc
@@ -133,6 +133,14 @@ FastMeter::~FastMeter ()
 {
 }
 
+void
+FastMeter::flush_pattern_cache () {
+	hb_pattern_cache.clear();
+	hm_pattern_cache.clear();
+	vb_pattern_cache.clear();
+	vm_pattern_cache.clear();
+}
+
 Cairo::RefPtr<Cairo::Pattern>
 FastMeter::generate_meter_pattern (
 		int width, int height, int *clr, float *stp, int styleflags, bool horiz)
@@ -222,7 +230,10 @@ FastMeter::generate_meter_pattern (
 			cairo_set_line_width(tc, 1.0);
 			cairo_set_source_rgba(tc, .0, .0, .0, 0.4);
 			//cairo_set_operator (tc, CAIRO_OPERATOR_SOURCE);
-			for (float y=0.5; y < height; y+= 2.0) {
+			for (int i = 0; float y = 0.5 + i * 2.0; ++i) {
+				if (y >= height) {
+					break;
+				}
 				cairo_move_to(tc, 0, y);
 				cairo_line_to(tc, width, y);
 				cairo_stroke (tc);
@@ -712,7 +723,9 @@ FastMeter::set (float lvl, float peak)
 
 	current_level = lvl;
 
-	if (current_level == old_level && current_peak == old_peak && (hold_state == 0 || peak != -1)) {
+	const float pixscale = (orientation == Vertical) ? pixheight : pixwidth;
+#define PIX(X) floor(pixscale * (X))
+	if (PIX(current_level) == PIX(old_level) && PIX(current_peak) == PIX(old_peak) && (hold_state == 0 || peak != -1)) {
 		return;
 	}