From c18090169d6bb49e877956701e77e8af338ed675 Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Mon, 9 Nov 2015 21:26:57 +0100
Subject: Refactor PixelBuffer, and remove unnecessary calls to setPixel and
 addPixel.

---
 plugingui/window.cc | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

(limited to 'plugingui/window.cc')

diff --git a/plugingui/window.cc b/plugingui/window.cc
index afbcb21..a7e220e 100644
--- a/plugingui/window.cc
+++ b/plugingui/window.cc
@@ -178,8 +178,20 @@ void GUI::Window::updateBuffer()
   std::vector<PixelBufferAlpha *>::iterator pli = pl.begin();
   while(pli != pl.end()) {
     PixelBufferAlpha *pb = *pli;
-    for(size_t x = 0; x < pb->width; x++) {
-      for(size_t y = 0; y < pb->height; y++) {
+    size_t updateWidth = pb->width;
+    size_t updateHeight = pb->height;
+    if(updateWidth > (wpixbuf.width - pb->x))
+    {
+	    updateWidth = (wpixbuf.width - pb->x);
+    }
+
+    if(updateHeight > (wpixbuf.height - pb->y))
+    {
+	    updateHeight = (wpixbuf.height - pb->y);
+    }
+
+    for(size_t x = 0; x < updateWidth; x++) {
+      for(size_t y = 0; y < updateHeight; y++) {
         unsigned char r,g,b,a;
         pb->pixel(x,y,&r,&g,&b,&a);
         wpixbuf.setPixel(x + pb->x, y + pb->y, r, g, b, a);
-- 
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