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https://github.com/juce-framework/JUCE.git
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299 lines
10 KiB
C++
299 lines
10 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library - "Jules' Utility Class Extensions"
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Copyright 2004-12 by Raw Material Software Ltd.
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------------------------------------------------------------------------------
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JUCE can be redistributed and/or modified under the terms of the GNU General
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Public License (Version 2), as published by the Free Software Foundation.
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A copy of the license is included in the JUCE distribution, or can be found
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online at www.gnu.org/licenses.
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JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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------------------------------------------------------------------------------
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To release a closed-source product which uses JUCE, commercial licenses are
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available: visit www.rawmaterialsoftware.com/juce for more information.
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==============================================================================
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*/
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#include "../JuceDemoHeader.h"
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//==============================================================================
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/** This will be the source of our balls and can be dragged around. */
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class BallGeneratorComponent : public Component
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{
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public:
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BallGeneratorComponent()
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{
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}
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void paint (Graphics& g) override
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{
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Rectangle<float> area (getLocalBounds().toFloat().reduced (2.0f));
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g.setColour (Colours::orange);
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g.drawRoundedRectangle (area, 10.0f, 2.0f);
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AttributedString s;
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s.setJustification (Justification::centred);
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s.setWordWrap (AttributedString::none);
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s.append ("Drag Me!");
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s.setColour (Colours::white);
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s.draw (g, area);
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}
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void resized() override
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{
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// Just set the limits of our constrainer so that we don't drag ourselves off the screen
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constrainer.setMinimumOnscreenAmounts (getHeight(), getWidth(), getHeight(), getWidth());
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}
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void mouseDown (const MouseEvent& e) override
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{
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// Prepares our dragger to drag this Component
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dragger.startDraggingComponent (this, e);
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}
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void mouseDrag (const MouseEvent& e) override
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{
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// Moves this Component according to the mouse drag event and applies our constraints to it
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dragger.dragComponent (this, e, &constrainer);
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}
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private:
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ComponentBoundsConstrainer constrainer;
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ComponentDragger dragger;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (BallGeneratorComponent)
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};
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//==============================================================================
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struct BallComponent : public Component
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{
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BallComponent (const Point<float>& pos)
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: position (pos),
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speed (Random::getSystemRandom().nextFloat() * 4.0f - 2.0f,
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Random::getSystemRandom().nextFloat() * -6.0f - 2.0f),
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colour (Colours::white)
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{
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setSize (20, 20);
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step();
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}
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bool step()
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{
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position += speed;
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speed.y += 0.1f;
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setCentrePosition ((int) position.x,
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(int) position.y);
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if (Component* parent = getParentComponent())
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return isPositiveAndBelow (position.x, (float) parent->getWidth())
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&& position.y < (float) parent->getHeight();
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return position.y < 400.0f && position.x >= -10.0f;
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}
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void paint (Graphics& g)
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{
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g.setColour (colour);
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g.fillEllipse (2.0f, 2.0f, getWidth() - 4.0f, getHeight() - 4.0f);
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g.setColour (Colours::darkgrey);
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g.drawEllipse (2.0f, 2.0f, getWidth() - 4.0f, getHeight() - 4.0f, 1.0f);
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}
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Point<float> position, speed;
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Colour colour;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (BallComponent)
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};
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//==============================================================================
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class AnimationDemo : public Component,
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private Button::Listener,
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private Timer
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{
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public:
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AnimationDemo()
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{
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setOpaque (true);
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setSize (620, 620);
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for (int i = 11; --i >= 0;)
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{
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Button* b = createButton();
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componentsToAnimate.add (b);
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addAndMakeVisible (b);
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b->addListener (this);
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}
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addAndMakeVisible (ballGenerator);
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ballGenerator.centreWithSize (80, 50);
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cycleCount = 2;
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for (int i = 0; i < componentsToAnimate.size(); ++i)
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componentsToAnimate.getUnchecked (i)->setBounds (getLocalBounds().reduced (250, 250));
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for (int i = 0; i < componentsToAnimate.size(); ++i)
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{
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const int newIndex = (i + 3) % componentsToAnimate.size();
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const float angle = newIndex * 2.0f * float_Pi / componentsToAnimate.size();
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const float radius = getWidth() * 0.35f;
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Rectangle<int> r (getWidth() / 2 + (int) (radius * std::sin (angle)) - 50,
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getHeight() / 2 + (int) (radius * std::cos (angle)) - 50,
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100, 100);
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animator.animateComponent (componentsToAnimate.getUnchecked(i),
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r.reduced (10),
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1.0f,
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500 + i * 100,
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false,
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0.0,
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0.0);
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}
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startTimerHz (60);
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}
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void paint (Graphics& g) override
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{
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fillTiledBackground (g);
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}
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private:
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OwnedArray<Component> componentsToAnimate;
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OwnedArray<BallComponent> balls;
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BallGeneratorComponent ballGenerator;
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ComponentAnimator animator;
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int cycleCount;
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Button* createRandomButton()
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{
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DrawablePath normal, over;
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Path star1;
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star1.addStar (Point<float>(), 5, 20.0f, 50.0f, 0.2f);
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normal.setPath (star1);
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normal.setFill (Colours::red);
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Path star2;
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star2.addStar (Point<float>(), 7, 30.0f, 50.0f, 0.0f);
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over.setPath (star2);
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over.setFill (Colours::pink);
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over.setStrokeFill (Colours::black);
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over.setStrokeThickness (5.0f);
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Image juceIcon = ImageCache::getFromMemory (BinaryData::juce_icon_png,
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BinaryData::juce_icon_pngSize);
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DrawableImage down;
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down.setImage (juceIcon);
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down.setOverlayColour (Colours::black.withAlpha (0.3f));
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if (Random::getSystemRandom().nextInt (10) > 2)
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{
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int type = Random::getSystemRandom().nextInt (3);
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DrawableButton* d = new DrawableButton ("Button",
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type == 0 ? DrawableButton::ImageOnButtonBackground
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: (type == 1 ? DrawableButton::ImageFitted
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: DrawableButton::ImageAboveTextLabel));
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d->setImages (&normal,
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Random::getSystemRandom().nextBool() ? &over : nullptr,
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Random::getSystemRandom().nextBool() ? &down : nullptr);
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if (Random::getSystemRandom().nextBool())
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{
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d->setColour (DrawableButton::backgroundColourId, getRandomBrightColour());
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d->setColour (DrawableButton::backgroundOnColourId, getRandomBrightColour());
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}
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d->setClickingTogglesState (Random::getSystemRandom().nextBool());
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return d;
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}
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ImageButton* b = new ImageButton ("ImageButton");
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b->setImages (true, true, true,
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juceIcon, 0.7f, Colours::transparentBlack,
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juceIcon, 1.0f, getRandomDarkColour().withAlpha (0.2f),
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juceIcon, 1.0f, getRandomBrightColour().withAlpha (0.8f),
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0.5f);
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return b;
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}
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Button* createButton()
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{
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Image juceIcon = ImageCache::getFromMemory (BinaryData::juce_icon_png,
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BinaryData::juce_icon_pngSize);
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ImageButton* b = new ImageButton ("ImageButton");
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b->setImages (true, true, true,
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juceIcon, 0.7f, Colours::transparentBlack,
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juceIcon, 1.0f, Colours::white,
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juceIcon, 1.0f, Colours::white,
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0.5f);
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return b;
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}
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void buttonClicked (Button*) override
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{
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for (int i = 0; i < componentsToAnimate.size(); ++i)
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{
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const int newIndex = (i + 3 * cycleCount) % componentsToAnimate.size();
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const float angle = newIndex * 2.0f * float_Pi / componentsToAnimate.size();
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const float radius = getWidth() * 0.35f;
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Rectangle<int> r (getWidth() / 2 + (int) (radius * std::sin (angle)) - 50,
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getHeight() / 2 + (int) (radius * std::cos (angle)) - 50,
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100, 100);
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animator.animateComponent (componentsToAnimate.getUnchecked(i),
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r.reduced (10),
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1.0f,
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900 + 300 * std::sin (angle),
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false,
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0.0,
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0.0);
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}
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++cycleCount;
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}
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void timerCallback() override
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{
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// Go through each of our balls and update their position
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for (int i = balls.size(); --i >= 0;)
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if (! balls.getUnchecked(i)->step())
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balls.remove (i);
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// Randomly generate new balls
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if (Random::getSystemRandom().nextInt (100) < 4)
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{
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BallComponent* ball = new BallComponent (ballGenerator.getBounds().getCentre().toFloat());
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addAndMakeVisible (ball);
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balls.add (ball);
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}
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}
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AnimationDemo)
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};
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// This static object will register this demo type in a global list of demos..
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static JuceDemoType<AnimationDemo> demo ("10 Components: Animation");
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