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dexed/JuceLibraryCode/modules/juce_gui_basics/drawables/juce_DrawableShape.cpp

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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI 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.
==============================================================================
*/
DrawableShape::DrawableShape()
: strokeType (0.0f),
mainFill (Colours::black),
strokeFill (Colours::black)
{
}
DrawableShape::DrawableShape (const DrawableShape& other)
: Drawable (other),
strokeType (other.strokeType),
mainFill (other.mainFill),
strokeFill (other.strokeFill)
{
}
DrawableShape::~DrawableShape()
{
}
//==============================================================================
class DrawableShape::RelativePositioner : public RelativeCoordinatePositionerBase
{
public:
RelativePositioner (DrawableShape& comp, const DrawableShape::RelativeFillType& f, bool isMain)
: RelativeCoordinatePositionerBase (comp),
owner (comp),
fill (f),
isMainFill (isMain)
{
}
bool registerCoordinates() override
{
bool ok = addPoint (fill.gradientPoint1);
ok = addPoint (fill.gradientPoint2) && ok;
return addPoint (fill.gradientPoint3) && ok;
}
void applyToComponentBounds() override
{
ComponentScope scope (owner);
if (isMainFill ? owner.mainFill.recalculateCoords (&scope)
: owner.strokeFill.recalculateCoords (&scope))
owner.repaint();
}
void applyNewBounds (const Rectangle<int>&) override
{
jassertfalse; // drawables can't be resized directly!
}
private:
DrawableShape& owner;
const DrawableShape::RelativeFillType fill;
const bool isMainFill;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (RelativePositioner)
};
void DrawableShape::setFill (const FillType& newFill)
{
setFill (RelativeFillType (newFill));
}
void DrawableShape::setStrokeFill (const FillType& newFill)
{
setStrokeFill (RelativeFillType (newFill));
}
void DrawableShape::setFillInternal (RelativeFillType& fill, const RelativeFillType& newFill,
ScopedPointer<RelativeCoordinatePositionerBase>& pos)
{
if (fill != newFill)
{
fill = newFill;
pos = nullptr;
if (fill.isDynamic())
{
pos = new RelativePositioner (*this, fill, true);
pos->apply();
}
else
{
fill.recalculateCoords (nullptr);
}
repaint();
}
}
void DrawableShape::setFill (const RelativeFillType& newFill)
{
setFillInternal (mainFill, newFill, mainFillPositioner);
}
void DrawableShape::setStrokeFill (const RelativeFillType& newFill)
{
setFillInternal (strokeFill, newFill, strokeFillPositioner);
}
void DrawableShape::setStrokeType (const PathStrokeType& newStrokeType)
{
if (strokeType != newStrokeType)
{
strokeType = newStrokeType;
strokeChanged();
}
}
void DrawableShape::setStrokeThickness (const float newThickness)
{
setStrokeType (PathStrokeType (newThickness, strokeType.getJointStyle(), strokeType.getEndStyle()));
}
bool DrawableShape::isStrokeVisible() const noexcept
{
return strokeType.getStrokeThickness() > 0.0f && ! strokeFill.fill.isInvisible();
}
void DrawableShape::refreshFillTypes (const FillAndStrokeState& newState, ComponentBuilder::ImageProvider* imageProvider)
{
setFill (newState.getFill (FillAndStrokeState::fill, imageProvider));
setStrokeFill (newState.getFill (FillAndStrokeState::stroke, imageProvider));
}
void DrawableShape::writeTo (FillAndStrokeState& state, ComponentBuilder::ImageProvider* imageProvider, UndoManager* undoManager) const
{
state.setFill (FillAndStrokeState::fill, mainFill, imageProvider, undoManager);
state.setFill (FillAndStrokeState::stroke, strokeFill, imageProvider, undoManager);
state.setStrokeType (strokeType, undoManager);
}
//==============================================================================
void DrawableShape::paint (Graphics& g)
{
transformContextToCorrectOrigin (g);
g.setFillType (mainFill.fill);
g.fillPath (path);
if (isStrokeVisible())
{
g.setFillType (strokeFill.fill);
g.fillPath (strokePath);
}
}
void DrawableShape::pathChanged()
{
strokeChanged();
}
void DrawableShape::strokeChanged()
{
strokePath.clear();
strokeType.createStrokedPath (strokePath, path, AffineTransform::identity, 4.0f);
setBoundsToEnclose (getDrawableBounds());
repaint();
}
Rectangle<float> DrawableShape::getDrawableBounds() const
{
if (isStrokeVisible())
return strokePath.getBounds();
return path.getBounds();
}
bool DrawableShape::hitTest (int x, int y)
{
bool allowsClicksOnThisComponent, allowsClicksOnChildComponents;
getInterceptsMouseClicks (allowsClicksOnThisComponent, allowsClicksOnChildComponents);
if (! allowsClicksOnThisComponent)
return false;
const float globalX = (float) (x - originRelativeToComponent.x);
const float globalY = (float) (y - originRelativeToComponent.y);
return path.contains (globalX, globalY)
|| (isStrokeVisible() && strokePath.contains (globalX, globalY));
}
//==============================================================================
DrawableShape::RelativeFillType::RelativeFillType()
{
}
DrawableShape::RelativeFillType::RelativeFillType (const FillType& fill_)
: fill (fill_)
{
if (fill.isGradient())
{
const ColourGradient& g = *fill.gradient;
gradientPoint1 = g.point1.transformedBy (fill.transform);
gradientPoint2 = g.point2.transformedBy (fill.transform);
gradientPoint3 = Point<float> (g.point1.x + g.point2.y - g.point1.y,
g.point1.y + g.point1.x - g.point2.x)
.transformedBy (fill.transform);
fill.transform = AffineTransform::identity;
}
}
DrawableShape::RelativeFillType::RelativeFillType (const RelativeFillType& other)
: fill (other.fill),
gradientPoint1 (other.gradientPoint1),
gradientPoint2 (other.gradientPoint2),
gradientPoint3 (other.gradientPoint3)
{
}
DrawableShape::RelativeFillType& DrawableShape::RelativeFillType::operator= (const RelativeFillType& other)
{
fill = other.fill;
gradientPoint1 = other.gradientPoint1;
gradientPoint2 = other.gradientPoint2;
gradientPoint3 = other.gradientPoint3;
return *this;
}
bool DrawableShape::RelativeFillType::operator== (const RelativeFillType& other) const
{
return fill == other.fill
&& ((! fill.isGradient())
|| (gradientPoint1 == other.gradientPoint1
&& gradientPoint2 == other.gradientPoint2
&& gradientPoint3 == other.gradientPoint3));
}
bool DrawableShape::RelativeFillType::operator!= (const RelativeFillType& other) const
{
return ! operator== (other);
}
bool DrawableShape::RelativeFillType::recalculateCoords (Expression::Scope* scope)
{
if (fill.isGradient())
{
const Point<float> g1 (gradientPoint1.resolve (scope));
const Point<float> g2 (gradientPoint2.resolve (scope));
AffineTransform t;
ColourGradient& g = *fill.gradient;
if (g.isRadial)
{
const Point<float> g3 (gradientPoint3.resolve (scope));
const Point<float> g3Source (g1.x + g2.y - g1.y,
g1.y + g1.x - g2.x);
t = AffineTransform::fromTargetPoints (g1.x, g1.y, g1.x, g1.y,
g2.x, g2.y, g2.x, g2.y,
g3Source.x, g3Source.y, g3.x, g3.y);
}
if (g.point1 != g1 || g.point2 != g2 || fill.transform != t)
{
g.point1 = g1;
g.point2 = g2;
fill.transform = t;
return true;
}
}
return false;
}
bool DrawableShape::RelativeFillType::isDynamic() const
{
return gradientPoint1.isDynamic() || gradientPoint2.isDynamic() || gradientPoint3.isDynamic();
}
void DrawableShape::RelativeFillType::writeTo (ValueTree& v, ComponentBuilder::ImageProvider* imageProvider, UndoManager* undoManager) const
{
if (fill.isColour())
{
v.setProperty (FillAndStrokeState::type, "solid", undoManager);
v.setProperty (FillAndStrokeState::colour, String::toHexString ((int) fill.colour.getARGB()), undoManager);
}
else if (fill.isGradient())
{
v.setProperty (FillAndStrokeState::type, "gradient", undoManager);
v.setProperty (FillAndStrokeState::gradientPoint1, gradientPoint1.toString(), undoManager);
v.setProperty (FillAndStrokeState::gradientPoint2, gradientPoint2.toString(), undoManager);
v.setProperty (FillAndStrokeState::gradientPoint3, gradientPoint3.toString(), undoManager);
const ColourGradient& cg = *fill.gradient;
v.setProperty (FillAndStrokeState::radial, cg.isRadial, undoManager);
String s;
for (int i = 0; i < cg.getNumColours(); ++i)
s << ' ' << cg.getColourPosition (i)
<< ' ' << String::toHexString ((int) cg.getColour(i).getARGB());
v.setProperty (FillAndStrokeState::colours, s.trimStart(), undoManager);
}
else if (fill.isTiledImage())
{
v.setProperty (FillAndStrokeState::type, "image", undoManager);
if (imageProvider != nullptr)
v.setProperty (FillAndStrokeState::imageId, imageProvider->getIdentifierForImage (fill.image), undoManager);
if (fill.getOpacity() < 1.0f)
v.setProperty (FillAndStrokeState::imageOpacity, fill.getOpacity(), undoManager);
else
v.removeProperty (FillAndStrokeState::imageOpacity, undoManager);
}
else
{
jassertfalse;
}
}
bool DrawableShape::RelativeFillType::readFrom (const ValueTree& v, ComponentBuilder::ImageProvider* imageProvider)
{
const String newType (v [FillAndStrokeState::type].toString());
if (newType == "solid")
{
const String colourString (v [FillAndStrokeState::colour].toString());
fill.setColour (colourString.isEmpty() ? Colours::black
: Colour::fromString (colourString));
return true;
}
else if (newType == "gradient")
{
ColourGradient g;
g.isRadial = v [FillAndStrokeState::radial];
StringArray colourSteps;
colourSteps.addTokens (v [FillAndStrokeState::colours].toString(), false);
for (int i = 0; i < colourSteps.size() / 2; ++i)
g.addColour (colourSteps[i * 2].getDoubleValue(),
Colour::fromString (colourSteps[i * 2 + 1]));
fill.setGradient (g);
gradientPoint1 = RelativePoint (v [FillAndStrokeState::gradientPoint1]);
gradientPoint2 = RelativePoint (v [FillAndStrokeState::gradientPoint2]);
gradientPoint3 = RelativePoint (v [FillAndStrokeState::gradientPoint3]);
return true;
}
else if (newType == "image")
{
Image im;
if (imageProvider != nullptr)
im = imageProvider->getImageForIdentifier (v [FillAndStrokeState::imageId]);
fill.setTiledImage (im, AffineTransform::identity);
fill.setOpacity ((float) v.getProperty (FillAndStrokeState::imageOpacity, 1.0f));
return true;
}
jassertfalse;
return false;
}
//==============================================================================
const Identifier DrawableShape::FillAndStrokeState::type ("type");
const Identifier DrawableShape::FillAndStrokeState::colour ("colour");
const Identifier DrawableShape::FillAndStrokeState::colours ("colours");
const Identifier DrawableShape::FillAndStrokeState::fill ("Fill");
const Identifier DrawableShape::FillAndStrokeState::stroke ("Stroke");
const Identifier DrawableShape::FillAndStrokeState::path ("Path");
const Identifier DrawableShape::FillAndStrokeState::jointStyle ("jointStyle");
const Identifier DrawableShape::FillAndStrokeState::capStyle ("capStyle");
const Identifier DrawableShape::FillAndStrokeState::strokeWidth ("strokeWidth");
const Identifier DrawableShape::FillAndStrokeState::gradientPoint1 ("point1");
const Identifier DrawableShape::FillAndStrokeState::gradientPoint2 ("point2");
const Identifier DrawableShape::FillAndStrokeState::gradientPoint3 ("point3");
const Identifier DrawableShape::FillAndStrokeState::radial ("radial");
const Identifier DrawableShape::FillAndStrokeState::imageId ("imageId");
const Identifier DrawableShape::FillAndStrokeState::imageOpacity ("imageOpacity");
DrawableShape::FillAndStrokeState::FillAndStrokeState (const ValueTree& state_)
: Drawable::ValueTreeWrapperBase (state_)
{
}
DrawableShape::RelativeFillType DrawableShape::FillAndStrokeState::getFill (const Identifier& fillOrStrokeType, ComponentBuilder::ImageProvider* imageProvider) const
{
DrawableShape::RelativeFillType f;
f.readFrom (state.getChildWithName (fillOrStrokeType), imageProvider);
return f;
}
ValueTree DrawableShape::FillAndStrokeState::getFillState (const Identifier& fillOrStrokeType)
{
ValueTree v (state.getChildWithName (fillOrStrokeType));
if (v.isValid())
return v;
setFill (fillOrStrokeType, FillType (Colours::black), nullptr, nullptr);
return getFillState (fillOrStrokeType);
}
void DrawableShape::FillAndStrokeState::setFill (const Identifier& fillOrStrokeType, const RelativeFillType& newFill,
ComponentBuilder::ImageProvider* imageProvider, UndoManager* undoManager)
{
ValueTree v (state.getOrCreateChildWithName (fillOrStrokeType, undoManager));
newFill.writeTo (v, imageProvider, undoManager);
}
PathStrokeType DrawableShape::FillAndStrokeState::getStrokeType() const
{
const String jointStyleString (state [jointStyle].toString());
const String capStyleString (state [capStyle].toString());
return PathStrokeType (state [strokeWidth],
jointStyleString == "curved" ? PathStrokeType::curved
: (jointStyleString == "bevel" ? PathStrokeType::beveled
: PathStrokeType::mitered),
capStyleString == "square" ? PathStrokeType::square
: (capStyleString == "round" ? PathStrokeType::rounded
: PathStrokeType::butt));
}
void DrawableShape::FillAndStrokeState::setStrokeType (const PathStrokeType& newStrokeType, UndoManager* undoManager)
{
state.setProperty (strokeWidth, (double) newStrokeType.getStrokeThickness(), undoManager);
state.setProperty (jointStyle, newStrokeType.getJointStyle() == PathStrokeType::mitered
? "miter" : (newStrokeType.getJointStyle() == PathStrokeType::curved ? "curved" : "bevel"), undoManager);
state.setProperty (capStyle, newStrokeType.getEndStyle() == PathStrokeType::butt
? "butt" : (newStrokeType.getEndStyle() == PathStrokeType::square ? "square" : "round"), undoManager);
}
static bool replaceColourInFill (DrawableShape::RelativeFillType& fill, Colour original, Colour replacement)
{
if (fill.fill.colour == original && fill.fill.isColour())
{
fill = FillType (replacement);
return true;
}
return false;
}
bool DrawableShape::replaceColour (Colour original, Colour replacement)
{
bool changed1 = replaceColourInFill (mainFill, original, replacement);
bool changed2 = replaceColourInFill (strokeFill, original, replacement);
return changed1 || changed2;
}