From a9b0245c19f7a5fadde00f38ca42a18e907bb734 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jaakko=20Ker=C3=A4nen?= <jaakko.keranen@iki.fi>
Date: Sun, 26 May 2019 13:02:49 +0300
Subject: [PATCH] libgui|GLWindow: Setting window icon

---
 doomsday/libs/gui/include/de/graphics/glwindow.h |  2 ++
 doomsday/libs/gui/src/graphics/glwindow.cpp      | 12 ++++++++++++
 doomsday/libs/gui/src/graphics/image.cpp         |  2 +-
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/doomsday/libs/gui/include/de/graphics/glwindow.h b/doomsday/libs/gui/include/de/graphics/glwindow.h
index 3b303b4ae1..cc5ffcb97b 100644
--- a/doomsday/libs/gui/include/de/graphics/glwindow.h
+++ b/doomsday/libs/gui/include/de/graphics/glwindow.h
@@ -39,6 +39,7 @@
 namespace de {
 
 class GLTimer;
+class Image;
 
 /**
  * Top-level window that contains an OpenGL drawing surface. @ingroup gui
@@ -83,6 +84,7 @@ class LIBGUI_PUBLIC GLWindow : public Asset
     GLWindow();
 
     void        setTitle(const String &title);
+    void        setIcon(const Image &image);
     void        setMinimumSize(const Size &minSize);
     void        setGeometry(const Rectanglei &rect);
     inline void setGeometry(dint x, dint y, duint width, duint height)
diff --git a/doomsday/libs/gui/src/graphics/glwindow.cpp b/doomsday/libs/gui/src/graphics/glwindow.cpp
index 5ad308caa8..52ca8c3344 100644
--- a/doomsday/libs/gui/src/graphics/glwindow.cpp
+++ b/doomsday/libs/gui/src/graphics/glwindow.cpp
@@ -24,6 +24,7 @@
 #include "de/ElapsedTimer"
 #include "de/EventLoop"
 #include "de/CoreEvent"
+#include "de/Image"
 
 #include <de/GLBuffer>
 #include <de/GLState>
@@ -372,6 +373,17 @@ void GLWindow::setTitle(const String &title)
     SDL_SetWindowTitle(d->window, title);
 }
 
+void GLWindow::setIcon(const Image &image)
+{
+    const Image rgba = image.convertToFormat(Image::RGBA_8888);
+    SDL_Surface *icon = SDL_CreateRGBSurfaceWithFormatFrom(const_cast<dbyte *>(image.bits()),
+                                                           image.width(), image.height(),
+                                                           32, image.stride(),
+                                                           SDL_PIXELFORMAT_ABGR8888);
+    SDL_SetWindowIcon(d->window, icon);
+    SDL_FreeSurface(icon);
+}
+    
 void GLWindow::setMinimumSize(const Size &minSize)
 {
     SDL_SetWindowMinimumSize(d->window, minSize.x, minSize.y);
diff --git a/doomsday/libs/gui/src/graphics/image.cpp b/doomsday/libs/gui/src/graphics/image.cpp
index 4df63826a0..7e3b13a888 100644
--- a/doomsday/libs/gui/src/graphics/image.cpp
+++ b/doomsday/libs/gui/src/graphics/image.cpp
@@ -606,7 +606,7 @@ bool Image::hasAlphaChannel() const
 Image Image::convertToFormat(Format toFormat) const
 {
     if (d->format == toFormat)
-{
+    {
         // No conversion necessary.
         return *this;
     }