25bd5d8adb
subrepo: subdir: "deps/juce" merged: "b13f9084e" upstream: origin: "https://github.com/essej/JUCE.git" branch: "sono6good" commit: "b13f9084e" git-subrepo: version: "0.4.3" origin: "https://github.com/ingydotnet/git-subrepo.git" commit: "2f68596"
278 lines
9.7 KiB
C++
278 lines
9.7 KiB
C++
/*
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==============================================================================
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This file is part of the JUCE library.
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Copyright (c) 2020 - Raw Material Software Limited
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JUCE is an open source library subject to commercial or open-source
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licensing.
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By using JUCE, you agree to the terms of both the JUCE 6 End-User License
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Agreement and JUCE Privacy Policy (both effective as of the 16th June 2020).
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End User License Agreement: www.juce.com/juce-6-licence
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Privacy Policy: www.juce.com/juce-privacy-policy
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Or: You may also use this code under the terms of the GPL v3 (see
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www.gnu.org/licenses).
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JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
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EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
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DISCLAIMED.
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==============================================================================
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*/
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namespace juce
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{
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namespace RelativeRectangleHelpers
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{
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inline void skipComma (String::CharPointerType& s)
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{
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s.incrementToEndOfWhitespace();
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if (*s == ',')
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++s;
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}
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static bool dependsOnSymbolsOtherThanThis (const Expression& e)
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{
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if (e.getType() == Expression::operatorType && e.getSymbolOrFunction() == ".")
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return true;
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if (e.getType() == Expression::symbolType)
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{
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switch (RelativeCoordinate::StandardStrings::getTypeOf (e.getSymbolOrFunction()))
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{
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case RelativeCoordinate::StandardStrings::x:
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case RelativeCoordinate::StandardStrings::y:
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case RelativeCoordinate::StandardStrings::left:
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case RelativeCoordinate::StandardStrings::right:
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case RelativeCoordinate::StandardStrings::top:
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case RelativeCoordinate::StandardStrings::bottom: return false;
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case RelativeCoordinate::StandardStrings::width:
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case RelativeCoordinate::StandardStrings::height:
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case RelativeCoordinate::StandardStrings::parent:
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case RelativeCoordinate::StandardStrings::unknown:
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default: break;
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}
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return true;
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}
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else
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{
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for (int i = e.getNumInputs(); --i >= 0;)
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if (dependsOnSymbolsOtherThanThis (e.getInput(i)))
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return true;
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}
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return false;
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}
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}
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//==============================================================================
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RelativeRectangle::RelativeRectangle()
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{
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}
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RelativeRectangle::RelativeRectangle (const RelativeCoordinate& left_, const RelativeCoordinate& right_,
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const RelativeCoordinate& top_, const RelativeCoordinate& bottom_)
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: left (left_), right (right_), top (top_), bottom (bottom_)
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{
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}
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RelativeRectangle::RelativeRectangle (const Rectangle<float>& rect)
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: left (rect.getX()),
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right (Expression::symbol (RelativeCoordinate::Strings::left) + Expression ((double) rect.getWidth())),
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top (rect.getY()),
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bottom (Expression::symbol (RelativeCoordinate::Strings::top) + Expression ((double) rect.getHeight()))
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{
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}
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RelativeRectangle::RelativeRectangle (const String& s)
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{
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String error;
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String::CharPointerType text (s.getCharPointer());
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left = RelativeCoordinate (Expression::parse (text, error));
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RelativeRectangleHelpers::skipComma (text);
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top = RelativeCoordinate (Expression::parse (text, error));
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RelativeRectangleHelpers::skipComma (text);
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right = RelativeCoordinate (Expression::parse (text, error));
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RelativeRectangleHelpers::skipComma (text);
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bottom = RelativeCoordinate (Expression::parse (text, error));
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}
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bool RelativeRectangle::operator== (const RelativeRectangle& other) const noexcept
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{
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return left == other.left && top == other.top && right == other.right && bottom == other.bottom;
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}
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bool RelativeRectangle::operator!= (const RelativeRectangle& 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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// An expression context that can evaluate expressions using "this"
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class RelativeRectangleLocalScope : public Expression::Scope
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{
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public:
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RelativeRectangleLocalScope (const RelativeRectangle& rect_) : rect (rect_) {}
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Expression getSymbolValue (const String& symbol) const
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{
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switch (RelativeCoordinate::StandardStrings::getTypeOf (symbol))
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{
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case RelativeCoordinate::StandardStrings::x:
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case RelativeCoordinate::StandardStrings::left: return rect.left.getExpression();
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case RelativeCoordinate::StandardStrings::y:
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case RelativeCoordinate::StandardStrings::top: return rect.top.getExpression();
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case RelativeCoordinate::StandardStrings::right: return rect.right.getExpression();
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case RelativeCoordinate::StandardStrings::bottom: return rect.bottom.getExpression();
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case RelativeCoordinate::StandardStrings::width:
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case RelativeCoordinate::StandardStrings::height:
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case RelativeCoordinate::StandardStrings::parent:
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case RelativeCoordinate::StandardStrings::unknown:
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default: break;
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}
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return Expression::Scope::getSymbolValue (symbol);
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}
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private:
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const RelativeRectangle& rect;
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JUCE_DECLARE_NON_COPYABLE (RelativeRectangleLocalScope)
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};
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const Rectangle<float> RelativeRectangle::resolve (const Expression::Scope* scope) const
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{
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if (scope == nullptr)
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{
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RelativeRectangleLocalScope defaultScope (*this);
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return resolve (&defaultScope);
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}
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else
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{
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const double l = left.resolve (scope);
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const double r = right.resolve (scope);
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const double t = top.resolve (scope);
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const double b = bottom.resolve (scope);
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return Rectangle<float> ((float) l, (float) t, (float) jmax (0.0, r - l), (float) jmax (0.0, b - t));
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}
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}
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void RelativeRectangle::moveToAbsolute (const Rectangle<float>& newPos, const Expression::Scope* scope)
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{
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left.moveToAbsolute (newPos.getX(), scope);
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right.moveToAbsolute (newPos.getRight(), scope);
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top.moveToAbsolute (newPos.getY(), scope);
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bottom.moveToAbsolute (newPos.getBottom(), scope);
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}
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bool RelativeRectangle::isDynamic() const
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{
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using namespace RelativeRectangleHelpers;
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return dependsOnSymbolsOtherThanThis (left.getExpression())
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|| dependsOnSymbolsOtherThanThis (right.getExpression())
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|| dependsOnSymbolsOtherThanThis (top.getExpression())
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|| dependsOnSymbolsOtherThanThis (bottom.getExpression());
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}
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String RelativeRectangle::toString() const
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{
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return left.toString() + ", " + top.toString() + ", " + right.toString() + ", " + bottom.toString();
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}
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void RelativeRectangle::renameSymbol (const Expression::Symbol& oldSymbol, const String& newName, const Expression::Scope& scope)
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{
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left = left.getExpression().withRenamedSymbol (oldSymbol, newName, scope);
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right = right.getExpression().withRenamedSymbol (oldSymbol, newName, scope);
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top = top.getExpression().withRenamedSymbol (oldSymbol, newName, scope);
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bottom = bottom.getExpression().withRenamedSymbol (oldSymbol, newName, scope);
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}
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//==============================================================================
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class RelativeRectangleComponentPositioner : public RelativeCoordinatePositionerBase
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{
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public:
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RelativeRectangleComponentPositioner (Component& comp, const RelativeRectangle& r)
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: RelativeCoordinatePositionerBase (comp),
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rectangle (r)
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{
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}
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bool registerCoordinates() override
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{
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bool ok = addCoordinate (rectangle.left);
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ok = addCoordinate (rectangle.right) && ok;
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ok = addCoordinate (rectangle.top) && ok;
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ok = addCoordinate (rectangle.bottom) && ok;
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return ok;
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}
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bool isUsingRectangle (const RelativeRectangle& other) const noexcept
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{
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return rectangle == other;
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}
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void applyToComponentBounds() override
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{
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for (int i = 32; --i >= 0;)
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{
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ComponentScope scope (getComponent());
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const Rectangle<int> newBounds (rectangle.resolve (&scope).getSmallestIntegerContainer());
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if (newBounds == getComponent().getBounds())
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return;
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getComponent().setBounds (newBounds);
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}
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jassertfalse; // Seems to be a recursive reference!
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}
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void applyNewBounds (const Rectangle<int>& newBounds) override
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{
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if (newBounds != getComponent().getBounds())
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{
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ComponentScope scope (getComponent());
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rectangle.moveToAbsolute (newBounds.toFloat(), &scope);
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applyToComponentBounds();
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}
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}
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private:
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RelativeRectangle rectangle;
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (RelativeRectangleComponentPositioner)
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};
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void RelativeRectangle::applyToComponent (Component& component) const
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{
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if (isDynamic())
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{
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RelativeRectangleComponentPositioner* current = dynamic_cast<RelativeRectangleComponentPositioner*> (component.getPositioner());
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if (current == nullptr || ! current->isUsingRectangle (*this))
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{
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RelativeRectangleComponentPositioner* p = new RelativeRectangleComponentPositioner (component, *this);
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component.setPositioner (p);
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p->apply();
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}
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}
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else
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{
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component.setPositioner (nullptr);
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component.setBounds (resolve (nullptr).getSmallestIntegerContainer());
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}
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}
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} // namespace juce
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