mirror of
https://github.com/juce-framework/JUCE.git
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305 lines
10 KiB
C++
305 lines
10 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE framework examples.
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Copyright (c) Raw Material Software Limited
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The code included in this file is provided under the terms of the ISC license
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http://www.isc.org/downloads/software-support-policy/isc-license. Permission
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to use, copy, modify, and/or distribute this software for any purpose with or
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without fee is hereby granted provided that the above copyright notice and
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this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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PERFORMANCE OF THIS SOFTWARE.
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==============================================================================
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*/
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/*******************************************************************************
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The block below describes the properties of this PIP. A PIP is a short snippet
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of code that can be read by the Projucer and used to generate a JUCE project.
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BEGIN_JUCE_PIP_METADATA
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name: AnimationDemo
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version: 1.0.0
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vendor: JUCE
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website: http://juce.com
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description: Displays an animated draggable ball.
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dependencies: juce_core, juce_data_structures, juce_events, juce_graphics,
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juce_gui_basics
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exporters: xcode_mac, vs2022, linux_make, androidstudio, xcode_iphone
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moduleFlags: JUCE_STRICT_REFCOUNTEDPOINTER=1
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type: Component
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mainClass: AnimationDemo
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useLocalCopy: 1
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END_JUCE_PIP_METADATA
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*******************************************************************************/
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#pragma once
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#include "../Assets/DemoUtilities.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 final : public Component
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{
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public:
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BallGeneratorComponent() {}
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void paint (Graphics& g) override
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{
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auto area = getLocalBounds().reduced (2);
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g.setColour (Colours::orange);
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g.drawRoundedRectangle (area.toFloat(), 10.0f, 2.0f);
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g.setColour (findColour (TextButton::textColourOffId));
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g.drawFittedText ("Drag Me!", area, Justification::centred, 1);
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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(),
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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 final : public Component
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{
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BallComponent (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 (auto* 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) override
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{
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g.setColour (colour);
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g.fillEllipse (2.0f, 2.0f, (float) getWidth() - 4.0f, (float) getHeight() - 4.0f);
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g.setColour (Colours::darkgrey);
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g.drawEllipse (2.0f, 2.0f, (float) getWidth() - 4.0f, (float) 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 final : public Component,
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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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for (auto i = 0; i < 11; ++i)
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{
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auto* b = createButton();
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componentsToAnimate.add (b);
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addAndMakeVisible (b);
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b->onClick = [this] { triggerAnimation(); };
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}
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addAndMakeVisible (ballGenerator);
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cycleCount = 2;
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startTimerHz (60);
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setSize (620, 620);
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}
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void paint (Graphics& g) override
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{
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g.fillAll (findColour (ResizableWindow::backgroundColourId));
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}
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void resized() override
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{
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ballGenerator.centreWithSize (80, 50);
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triggerAnimation();
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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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bool firstCallback = true;
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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 ({}, 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 ({}, 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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auto juceIcon = getImageFromAssets ("juce_icon.png");
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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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auto type = Random::getSystemRandom().nextInt (3);
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auto* 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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auto* 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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auto juceIcon = getImageFromAssets ("juce_icon.png").rescaled (128, 128);
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auto* b = new ImageButton ("ImageButton");
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b->setImages (true, true, true,
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juceIcon, 1.0f, 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 triggerAnimation()
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{
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auto width = getWidth();
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auto height = getHeight();
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bool useWidth = (height > width);
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for (auto* component : componentsToAnimate)
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{
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auto newIndex = (componentsToAnimate.indexOf (component) + 3 * cycleCount)
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% componentsToAnimate.size();
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auto angle = (float) newIndex * MathConstants<float>::twoPi / (float) componentsToAnimate.size();
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auto radius = useWidth ? (float) width * 0.35f
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: (float) height * 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 (component, r.reduced (10), 1.0f,
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900 + (int) (300 * std::sin (angle)),
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false, 0.0, 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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if (firstCallback)
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{
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triggerAnimation();
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firstCallback = false;
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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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addAndMakeVisible (balls.add (new BallComponent (ballGenerator.getBounds().getCentre().toFloat())));
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}
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AnimationDemo)
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};
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