7 files changed, 149 insertions, 44 deletions

diff --git a/src/controller/performzoom.h b/src/controller/performzoom.h
new file mode 100644
index 0000000..323cc20
--- a/dev/null
+++ b/src/controller/performzoom.h
@@ -0,0 +1,9 @@
+#ifndef PERFORMZOOM_H
+#define PERFORMZOOM_H
+
+/*
+ * Perform a zoom operation.
+ */
+void performzoom (int x1, int y1, int x2, int y2);
+
+#endif // PERFORMZOOM_H