From 6f08a77cace2be004826f49a0c9774d7bfc797f0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89milie=20Feral?= <emilie.feral@numworks.com>
Date: Tue, 15 May 2018 17:02:21 +0200
Subject: [PATCH] [escher] create TransparentView

---
 escher/Makefile                          |  1 +
 escher/include/escher.h                  |  1 +
 escher/include/escher/transparent_view.h | 11 +++++++++++
 escher/include/escher/view.h             |  3 ++-
 escher/src/transparent_view.cpp          |  8 ++++++++
 5 files changed, 23 insertions(+), 1 deletion(-)
 create mode 100644 escher/include/escher/transparent_view.h
 create mode 100644 escher/src/transparent_view.cpp

diff --git a/escher/Makefile b/escher/Makefile
index f1a39b081..c09c89a02 100644
--- a/escher/Makefile
+++ b/escher/Makefile
@@ -75,6 +75,7 @@ objs += $(addprefix escher/src/,\
   timer.o\
   toolbox.o\
   toolbox_message_tree.o\
+  transparent_view.o\
   view.o\
   view_controller.o\
   warning_controller.o\
diff --git a/escher/include/escher.h b/escher/include/escher.h
index c1e6896a8..9d136ab4f 100644
--- a/escher/include/escher.h
+++ b/escher/include/escher.h
@@ -77,6 +77,7 @@
 #include <escher/timer.h>
 #include <escher/toolbox.h>
 #include <escher/toolbox_message_tree.h>
+#include <escher/transparent_view.h>
 #include <escher/view.h>
 #include <escher/view_controller.h>
 #include <escher/warning_controller.h>
diff --git a/escher/include/escher/transparent_view.h b/escher/include/escher/transparent_view.h
new file mode 100644
index 000000000..582e20eac
--- /dev/null
+++ b/escher/include/escher/transparent_view.h
@@ -0,0 +1,11 @@
+#ifndef ESCHER_TRANSPARENT_VIEW_H
+#define ESCHER_TRANSPARENT_VIEW_H
+
+#include <escher/view.h>
+
+class TransparentView : public View {
+public:
+  void markRectAsDirty(KDRect rect) override;
+};
+
+#endif
diff --git a/escher/include/escher/view.h b/escher/include/escher/view.h
index c1f6bdde8..8ba895c9f 100644
--- a/escher/include/escher/view.h
+++ b/escher/include/escher/view.h
@@ -23,6 +23,7 @@ class Window;
 class View {
   // We only want Window to be able to invoke View::redraw
   friend class Window;
+  friend class TransparentView;
 public:
   View();
   virtual ~View();
@@ -58,7 +59,7 @@ protected:
    *  - Moving a cursor -> In that case, there's really a much more efficient way
    *  - ... and that's all I can think of.
    */
-  void markRectAsDirty(KDRect rect);
+  virtual void markRectAsDirty(KDRect rect);
 #if ESCHER_VIEW_LOGGING
   virtual const char * className() const;
   virtual void logAttributes(std::ostream &os) const;
diff --git a/escher/src/transparent_view.cpp b/escher/src/transparent_view.cpp
new file mode 100644
index 000000000..5eb138ad4
--- /dev/null
+++ b/escher/src/transparent_view.cpp
@@ -0,0 +1,8 @@
+#include <escher/transparent_view.h>
+
+void TransparentView::markRectAsDirty(KDRect rect) {
+  if (m_superview) {
+    m_superview->markRectAsDirty(KDRect(m_superview->pointFromPointInView(this, rect.origin()), rect.size()));
+  }
+  View::markRectAsDirty(rect);
+}