- clean working copy for leaving SVN

2022-06-28 19:04:46 +02:00
parent 62a2d47cb3
commit 762b8f0e7d
1966 changed files with 699872 additions and 126 deletions
@@ -0,0 +1,153 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library - "Jules' Utility Class Extensions"
+   Copyright 2004-12 by Raw Material Software Ltd.
+
+  ------------------------------------------------------------------------------
+
+   JUCE can be redistributed and/or modified under the terms of the GNU General
+   Public License (Version 2), as published by the Free Software Foundation.
+   A copy of the license is included in the JUCE distribution, or can be found
+   online 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.rawmaterialsoftware.com/juce for more information.
+
+  ==============================================================================
+*/
+
+#include "../JuceDemoHeader.h"
+
+
+//==============================================================================
+class MultiTouchDemo    : public Component
+{
+public:
+    MultiTouchDemo()
+    {
+        setOpaque (true);
+    }
+
+    void paint (Graphics& g) override
+    {
+        g.fillAll (Colour::greyLevel (0.4f));
+
+        g.setColour (Colours::lightgrey);
+        g.setFont (14.0f);
+        g.drawFittedText ("Drag here with as many fingers as you have!",
+                          getLocalBounds().reduced (30), Justification::centred, 4);
+
+        for (int i = 0; i < trails.size(); ++i)
+            drawTrail (*trails.getUnchecked(i), g);
+    }
+
+    void mouseDrag (const MouseEvent& e) override
+    {
+        Trail* t = getTrail (e.source);
+
+        if (t == nullptr)
+        {
+            t = new Trail (e.source);
+            t->path.startNewSubPath (e.position);
+            trails.add (t);
+        }
+
+        t->pushPoint (e.position, e.mods);
+        repaint();
+    }
+
+    void mouseUp (const MouseEvent& e) override
+    {
+        trails.removeObject (getTrail (e.source));
+        repaint();
+    }
+
+    struct Trail
+    {
+        Trail (const MouseInputSource& ms)
+            : source (ms), colour (getRandomBrightColour().withAlpha (0.6f))
+        {}
+
+        void pushPoint (Point<float> p, ModifierKeys newMods)
+        {
+            currentPosition = p;
+            modifierKeys = newMods;
+
+            if (lastPoint.getDistanceFrom(p) > 5.0f)
+            {
+                if (lastPoint != Point<float>())
+                {
+                    path.quadraticTo (lastPoint, p);
+                    lastPoint = Point<float>();
+                }
+                else
+                {
+                    lastPoint = p;
+                }
+            }
+        }
+
+        MouseInputSource source;
+        Path path;
+        Colour colour;
+        Point<float> lastPoint, currentPosition;
+        ModifierKeys modifierKeys;
+
+        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (Trail)
+    };
+
+    OwnedArray<Trail> trails;
+
+    void drawTrail (Trail& trail, Graphics& g)
+    {
+        g.setColour (trail.colour);
+        g.strokePath (trail.path, PathStrokeType (20.0f, PathStrokeType::curved, PathStrokeType::rounded));
+
+        const float radius = 40.0f;
+
+        g.setColour (Colours::black);
+        g.drawEllipse (trail.currentPosition.x - radius,
+                       trail.currentPosition.y - radius,
+                       radius * 2.0f, radius * 2.0f, 2.0f);
+
+        g.setFont (14.0f);
+
+        String desc ("Mouse #");
+        desc << trail.source.getIndex();
+
+        if (trail.modifierKeys.isCommandDown()) desc << " (CMD)";
+        if (trail.modifierKeys.isShiftDown())   desc << " (SHIFT)";
+        if (trail.modifierKeys.isCtrlDown())    desc << " (CTRL)";
+        if (trail.modifierKeys.isAltDown())     desc << " (ALT)";
+
+        g.drawText (desc,
+                    Rectangle<int> ((int) trail.currentPosition.x - 200,
+                                    (int) trail.currentPosition.y - 60,
+                                    400, 20),
+                    Justification::centredTop, false);
+    }
+
+    Trail* getTrail (const MouseInputSource& source)
+    {
+        for (int i = 0; i < trails.size(); ++i)
+        {
+            Trail* t = trails.getUnchecked(i);
+
+            if (t->source == source)
+                return t;
+        }
+
+        return nullptr;
+    }
+};
+
+
+// This static object will register this demo type in a global list of demos..
+static JuceDemoType<MultiTouchDemo> demo ("10 Components: Multi-touch");