From 1777c9b48e93e6c5a7aaf5101397566ad61789e1 Mon Sep 17 00:00:00 2001
From: Bjørn Lindeijer <bjorn@lindeijer.nl>
Date: Fri, 5 Dec 2008 23:01:54 +0100
Subject: Fade out mouse cursor when not used for some time

The mouse cursor will now disappear when not used for 15 seconds. When
using OpenGL it will even fade.

Requested by doorsman.
---
 src/gui/gui.cpp | 47 +++++++++++++++++++++++++++++++++++------------
 1 file changed, 35 insertions(+), 12 deletions(-)

(limited to 'src/gui/gui.cpp')

diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index fcc7ed77..a382ef85 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -37,6 +37,7 @@
 #include "../graphics.h"
 #include "../log.h"
 
+#include "../resources/image.h"
 #include "../resources/imageset.h"
 #include "../resources/imageloader.h"
 #include "../resources/resourcemanager.h"
@@ -81,6 +82,8 @@ class GuiConfigListener : public ConfigListener
 Gui::Gui(Graphics *graphics):
     mCustomCursor(false),
     mMouseCursors(NULL),
+    mMouseCursorAlpha(1.0f),
+    mMouseInactivityTimer(0),
     mCursorType(CURSOR_POINTER)
 {
     logger->log("Initializing GUI...");
@@ -220,32 +223,47 @@ Gui::~Gui()
     delete hitBlueFont;
     delete hitYellowFont;
 
-    if (mMouseCursors) {
+    if (mMouseCursors)
         mMouseCursors->decRef();
-    }
 
     delete mGuiFont;
     delete speechFont;
     delete viewport;
-    delete mTop;
+    delete getTop();
 
     delete guiInput;
 }
 
-void
-Gui::draw()
+void Gui::logic()
+{
+    // Fade out mouse cursor after extended inactivity
+    if (mMouseInactivityTimer < 100 * 15) {
+        ++mMouseInactivityTimer;
+        mMouseCursorAlpha = std::min(1.0f, mMouseCursorAlpha + 0.05f);
+    } else {
+        mMouseCursorAlpha = std::max(0.0f, mMouseCursorAlpha - 0.005f);
+    }
+
+    gcn::Gui::logic();
+}
+
+void Gui::draw()
 {
-    mGraphics->pushClipArea(mTop->getDimension());
-    mTop->draw(mGraphics);
+    mGraphics->pushClipArea(getTop()->getDimension());
+    getTop()->draw(mGraphics);
 
     int mouseX, mouseY;
     Uint8 button = SDL_GetMouseState(&mouseX, &mouseY);
 
-    if ((SDL_GetAppState() & SDL_APPMOUSEFOCUS || button & SDL_BUTTON(1)) &&
-            mCustomCursor)
+    if ((SDL_GetAppState() & SDL_APPMOUSEFOCUS || button & SDL_BUTTON(1))
+            && mCustomCursor
+            && mMouseCursorAlpha > 0.0f)
     {
+        Image *mouseCursor = mMouseCursors->get(mCursorType);
+        mouseCursor->setAlpha(mMouseCursorAlpha);
+
         static_cast<Graphics*>(mGraphics)->drawImage(
-                mMouseCursors->get(mCursorType),
+                mouseCursor,
                 mouseX - 15,
                 mouseY - 17);
     }
@@ -253,8 +271,7 @@ Gui::draw()
     mGraphics->popClipArea();
 }
 
-void
-Gui::setUseCustomCursor(bool customCursor)
+void Gui::setUseCustomCursor(bool customCursor)
 {
     if (customCursor != mCustomCursor)
     {
@@ -287,3 +304,9 @@ Gui::setUseCustomCursor(bool customCursor)
         }
     }
 }
+
+void Gui::handleMouseMoved(const gcn::MouseInput &mouseInput)
+{
+    gcn::Gui::handleMouseMoved(mouseInput);
+    mMouseInactivityTimer = 0;
+}
-- 
cgit v1.2.3-60-g2f50