- port to minGw
git-svn-id: http://moon:8086/svn/software/trunk/projects/JaySynth@235 b431acfa-c32f-4a4a-93f1-934dc6c82436
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/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2013 - Raw Material Software Ltd.
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Permission is granted to use this software under the terms of either:
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a) the GPL v2 (or any later version)
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b) the Affero GPL v3
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Details of these licenses can be found 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.juce.com for more information.
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==============================================================================
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*/
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ColourGradient::ColourGradient() noexcept
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{
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#if JUCE_DEBUG
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point1.setX (987654.0f);
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#define JUCE_COLOURGRADIENT_CHECK_COORDS_INITIALISED jassert (point1.x != 987654.0f);
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#else
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#define JUCE_COLOURGRADIENT_CHECK_COORDS_INITIALISED
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#endif
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}
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ColourGradient::ColourGradient (Colour colour1, const float x1_, const float y1_,
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Colour colour2, const float x2_, const float y2_,
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const bool isRadial_)
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: point1 (x1_, y1_),
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point2 (x2_, y2_),
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isRadial (isRadial_)
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{
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colours.add (ColourPoint (0.0, colour1));
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colours.add (ColourPoint (1.0, colour2));
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}
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ColourGradient::~ColourGradient()
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{
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}
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bool ColourGradient::operator== (const ColourGradient& other) const noexcept
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{
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return point1 == other.point1 && point2 == other.point2
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&& isRadial == other.isRadial
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&& colours == other.colours;
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}
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bool ColourGradient::operator!= (const ColourGradient& other) const noexcept
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{
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return ! operator== (other);
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}
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//==============================================================================
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void ColourGradient::clearColours()
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{
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colours.clear();
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}
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int ColourGradient::addColour (const double proportionAlongGradient, Colour colour)
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{
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// must be within the two end-points
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jassert (proportionAlongGradient >= 0 && proportionAlongGradient <= 1.0);
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const double pos = jlimit (0.0, 1.0, proportionAlongGradient);
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int i;
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for (i = 0; i < colours.size(); ++i)
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if (colours.getReference(i).position > pos)
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break;
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colours.insert (i, ColourPoint (pos, colour));
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return i;
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}
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void ColourGradient::removeColour (int index)
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{
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jassert (index > 0 && index < colours.size() - 1);
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colours.remove (index);
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}
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void ColourGradient::multiplyOpacity (const float multiplier) noexcept
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{
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for (int i = 0; i < colours.size(); ++i)
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{
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Colour& c = colours.getReference(i).colour;
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c = c.withMultipliedAlpha (multiplier);
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}
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}
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//==============================================================================
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int ColourGradient::getNumColours() const noexcept
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{
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return colours.size();
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}
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double ColourGradient::getColourPosition (const int index) const noexcept
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{
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if (isPositiveAndBelow (index, colours.size()))
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return colours.getReference (index).position;
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return 0;
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}
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Colour ColourGradient::getColour (const int index) const noexcept
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{
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if (isPositiveAndBelow (index, colours.size()))
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return colours.getReference (index).colour;
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return Colour();
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}
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void ColourGradient::setColour (int index, Colour newColour) noexcept
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{
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if (isPositiveAndBelow (index, colours.size()))
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colours.getReference (index).colour = newColour;
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}
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Colour ColourGradient::getColourAtPosition (const double position) const noexcept
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{
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jassert (colours.getReference(0).position == 0); // the first colour specified has to go at position 0
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if (position <= 0 || colours.size() <= 1)
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return colours.getReference(0).colour;
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int i = colours.size() - 1;
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while (position < colours.getReference(i).position)
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--i;
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const ColourPoint& p1 = colours.getReference (i);
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if (i >= colours.size() - 1)
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return p1.colour;
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const ColourPoint& p2 = colours.getReference (i + 1);
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return p1.colour.interpolatedWith (p2.colour, (float) ((position - p1.position) / (p2.position - p1.position)));
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}
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//==============================================================================
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void ColourGradient::createLookupTable (PixelARGB* const lookupTable, const int numEntries) const noexcept
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{
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JUCE_COLOURGRADIENT_CHECK_COORDS_INITIALISED // Trying to use this object without setting its coordinates?
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jassert (colours.size() >= 2);
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jassert (numEntries > 0);
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jassert (colours.getReference(0).position == 0); // The first colour specified has to go at position 0
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PixelARGB pix1 (colours.getReference (0).colour.getPixelARGB());
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int index = 0;
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for (int j = 1; j < colours.size(); ++j)
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{
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const ColourPoint& p = colours.getReference (j);
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const int numToDo = roundToInt (p.position * (numEntries - 1)) - index;
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const PixelARGB pix2 (p.colour.getPixelARGB());
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for (int i = 0; i < numToDo; ++i)
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{
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jassert (index >= 0 && index < numEntries);
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lookupTable[index] = pix1;
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lookupTable[index].tween (pix2, (uint32) ((i << 8) / numToDo));
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++index;
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}
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pix1 = pix2;
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}
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while (index < numEntries)
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lookupTable [index++] = pix1;
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}
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int ColourGradient::createLookupTable (const AffineTransform& transform, HeapBlock <PixelARGB>& lookupTable) const
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{
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JUCE_COLOURGRADIENT_CHECK_COORDS_INITIALISED // Trying to use this object without setting its coordinates?
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jassert (colours.size() >= 2);
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const int numEntries = jlimit (1, jmax (1, (colours.size() - 1) << 8),
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3 * (int) point1.transformedBy (transform)
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.getDistanceFrom (point2.transformedBy (transform)));
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lookupTable.malloc ((size_t) numEntries);
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createLookupTable (lookupTable, numEntries);
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return numEntries;
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}
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bool ColourGradient::isOpaque() const noexcept
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{
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for (int i = 0; i < colours.size(); ++i)
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if (! colours.getReference(i).colour.isOpaque())
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return false;
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return true;
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}
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bool ColourGradient::isInvisible() const noexcept
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{
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for (int i = 0; i < colours.size(); ++i)
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if (! colours.getReference(i).colour.isTransparent())
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return false;
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return true;
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}
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bool ColourGradient::ColourPoint::operator== (const ColourPoint& other) const noexcept
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{
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return position == other.position && colour == other.colour;
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}
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bool ColourGradient::ColourPoint::operator!= (const ColourPoint& other) const noexcept
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{
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return position != other.position || colour != other.colour;
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}
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