Initial check-in of new simple app helper classes

modules/juce_opengl/utils/juce_OpenGLAppComponent.cpp

@@ -0,0 +1,57 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2013 - Raw Material Software Ltd.
+
+   Permission is granted to use this software under the terms of either:
+   a) the GPL v2 (or any later version)
+   b) the Affero GPL v3
+
+   Details of these licenses can be found at: www.gnu.org/licenses
+
+   JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+   ------------------------------------------------------------------------------
+
+   To release a closed-source product which uses JUCE, commercial licenses are
+   available: visit www.juce.com for more information.
+
+  ==============================================================================
+*/
+
+AnimatedAppComponent::AnimatedAppComponent()
+    : lastPaintTime (Time::getCurrentTime()), elapsedFrames (0)
+{
+    setOpaque (true);
+}
+
+void AnimatedAppComponent::setFramesPerSecond (int framesPerSecond)
+{
+    jassert (framesPerSecond > 0 && framesPerSecond < 1000);
+    startTimer (1000 / framesPerSecond);
+}
+
+int AnimatedAppComponent::getFrameCounter() const noexcept
+{
+    return elapsedFrames;
+}
+
+int AnimatedAppComponent::getMillisecondsSinceLastPaint() const noexcept
+{
+    return (Time::getCurrentTime() - lastPaintTime).toMilliseconds();
+}
+
+void AnimatedAppComponent::timerCallback() override
+{
+    ++elapsedFrames;
+    update();
+    repaint();
+}
+
+void AnimatedAppComponent::paintOverChildren (Graphics&)
+{
+    lastPaintTime = Time::getCurrentTime();
+}

modules/juce_opengl/utils/juce_OpenGLAppComponent.h

@@ -0,0 +1,72 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2013 - Raw Material Software Ltd.
+
+   Permission is granted to use this software under the terms of either:
+   a) the GPL v2 (or any later version)
+   b) the Affero GPL v3
+
+   Details of these licenses can be found at: www.gnu.org/licenses
+
+   JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
+   WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+   A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+   ------------------------------------------------------------------------------
+
+   To release a closed-source product which uses JUCE, commercial licenses are
+   available: visit www.juce.com for more information.
+
+  ==============================================================================
+*/
+
+#ifndef JUCE_OPENGLAPPCOMPONENT_H_INCLUDED
+#define JUCE_OPENGLAPPCOMPONENT_H_INCLUDED
+
+
+//==============================================================================
+/**
+    A base class for writing simple one-page graphical apps.
+
+    A subclass can inherit from this and implement just a few methods such as
+    paint() and mouse-handling. The base class provides some simple abstractions
+    to take care of continuously repainting itself.
+*/
+class AnimatedAppComponent   : public Component,
+                               private Timer
+{
+public:
+    AnimatedAppComponent();
+
+    /** Your subclass can call this to start a timer running which will
+        call update() and repaint the component at the given frequency.
+    */
+    void setFramesPerSecond (int framesPerSecond);
+
+    /** Returns the number of elapsed frames since the component started running. */
+    int getFrameCounter() const noexcept;
+
+    /**
+    */
+    int getMillisecondsSinceLastPaint() const noexcept;
+
+    /**
+    */
+    void update() = 0;
+
+private:
+    //==============================================================================
+    Time lastPaintTime;
+    int elapsedFrames;
+
+    void timerCallback() override;
+    void paintOverChildren (Graphics&) override;
+
+    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AnimatedAppComponent)
+};
+
+
+
+#endif   // JUCE_OPENGLAPPCOMPONENT_H_INCLUDED