193 lines
8.3 KiB
C++
193 lines
8.3 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library.
|
|
Copyright (c) 2017 - ROLI Ltd.
|
|
|
|
JUCE is an open source library subject to commercial or open-source
|
|
licensing.
|
|
|
|
By using JUCE, you agree to the terms of both the JUCE 5 End-User License
|
|
Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
|
|
27th April 2017).
|
|
|
|
End User License Agreement: www.juce.com/juce-5-licence
|
|
Privacy Policy: www.juce.com/juce-5-privacy-policy
|
|
|
|
Or: You may also use this code under the terms of the GPL v3 (see
|
|
www.gnu.org/licenses).
|
|
|
|
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
|
|
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
|
|
DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
namespace juce
|
|
{
|
|
|
|
//==============================================================================
|
|
/**
|
|
Represents a type of justification to be used when positioning graphical items.
|
|
|
|
e.g. it indicates whether something should be placed top-left, top-right,
|
|
centred, etc.
|
|
|
|
It is used in various places wherever this kind of information is needed.
|
|
|
|
@tags{Graphics}
|
|
*/
|
|
class Justification
|
|
{
|
|
public:
|
|
//==============================================================================
|
|
/** Creates a Justification object using a combination of flags from the Flags enum. */
|
|
Justification (int justificationFlags) noexcept : flags (justificationFlags) {}
|
|
|
|
/** Creates a copy of another Justification object. */
|
|
Justification (const Justification& other) noexcept : flags (other.flags) {}
|
|
|
|
/** Copies another Justification object. */
|
|
Justification& operator= (const Justification& other) noexcept
|
|
{
|
|
flags = other.flags;
|
|
return *this;
|
|
}
|
|
|
|
bool operator== (const Justification& other) const noexcept { return flags == other.flags; }
|
|
bool operator!= (const Justification& other) const noexcept { return flags != other.flags; }
|
|
|
|
//==============================================================================
|
|
/** Returns the raw flags that are set for this Justification object. */
|
|
inline int getFlags() const noexcept { return flags; }
|
|
|
|
/** Tests a set of flags for this object.
|
|
@returns true if any of the flags passed in are set on this object.
|
|
*/
|
|
inline bool testFlags (int flagsToTest) const noexcept { return (flags & flagsToTest) != 0; }
|
|
|
|
/** Returns just the flags from this object that deal with vertical layout. */
|
|
int getOnlyVerticalFlags() const noexcept { return flags & (top | bottom | verticallyCentred); }
|
|
|
|
/** Returns just the flags from this object that deal with horizontal layout. */
|
|
int getOnlyHorizontalFlags() const noexcept { return flags & (left | right | horizontallyCentred | horizontallyJustified); }
|
|
|
|
//==============================================================================
|
|
/** Adjusts the position of a rectangle to fit it into a space.
|
|
|
|
The (x, y) position of the rectangle will be updated to position it inside the
|
|
given space according to the justification flags.
|
|
*/
|
|
template <typename ValueType>
|
|
void applyToRectangle (ValueType& x, ValueType& y, ValueType w, ValueType h,
|
|
ValueType spaceX, ValueType spaceY, ValueType spaceW, ValueType spaceH) const noexcept
|
|
{
|
|
x = spaceX;
|
|
if ((flags & horizontallyCentred) != 0) x += (spaceW - w) / (ValueType) 2;
|
|
else if ((flags & right) != 0) x += spaceW - w;
|
|
|
|
y = spaceY;
|
|
if ((flags & verticallyCentred) != 0) y += (spaceH - h) / (ValueType) 2;
|
|
else if ((flags & bottom) != 0) y += spaceH - h;
|
|
}
|
|
|
|
/** Returns the new position of a rectangle that has been justified to fit within a given space.
|
|
*/
|
|
template <typename ValueType>
|
|
const Rectangle<ValueType> appliedToRectangle (const Rectangle<ValueType>& areaToAdjust,
|
|
const Rectangle<ValueType>& targetSpace) const noexcept
|
|
{
|
|
ValueType x = areaToAdjust.getX(), y = areaToAdjust.getY();
|
|
applyToRectangle (x, y, areaToAdjust.getWidth(), areaToAdjust.getHeight(),
|
|
targetSpace.getX(), targetSpace.getY(), targetSpace.getWidth(), targetSpace.getHeight());
|
|
return areaToAdjust.withPosition (x, y);
|
|
}
|
|
|
|
//==============================================================================
|
|
/** Flag values that can be combined and used in the constructor. */
|
|
enum Flags
|
|
{
|
|
//==============================================================================
|
|
/** Indicates that the item should be aligned against the left edge of the available space. */
|
|
left = 1,
|
|
|
|
/** Indicates that the item should be aligned against the right edge of the available space. */
|
|
right = 2,
|
|
|
|
/** Indicates that the item should be placed in the centre between the left and right
|
|
sides of the available space. */
|
|
horizontallyCentred = 4,
|
|
|
|
//==============================================================================
|
|
/** Indicates that the item should be aligned against the top edge of the available space. */
|
|
top = 8,
|
|
|
|
/** Indicates that the item should be aligned against the bottom edge of the available space. */
|
|
bottom = 16,
|
|
|
|
/** Indicates that the item should be placed in the centre between the top and bottom
|
|
sides of the available space. */
|
|
verticallyCentred = 32,
|
|
|
|
//==============================================================================
|
|
/** Indicates that lines of text should be spread out to fill the maximum width
|
|
available, so that both margins are aligned vertically.
|
|
*/
|
|
horizontallyJustified = 64,
|
|
|
|
//==============================================================================
|
|
/** Indicates that the item should be centred vertically and horizontally.
|
|
This is equivalent to (horizontallyCentred | verticallyCentred)
|
|
*/
|
|
centred = 36,
|
|
|
|
/** Indicates that the item should be centred vertically but placed on the left hand side.
|
|
This is equivalent to (left | verticallyCentred)
|
|
*/
|
|
centredLeft = 33,
|
|
|
|
/** Indicates that the item should be centred vertically but placed on the right hand side.
|
|
This is equivalent to (right | verticallyCentred)
|
|
*/
|
|
centredRight = 34,
|
|
|
|
/** Indicates that the item should be centred horizontally and placed at the top.
|
|
This is equivalent to (horizontallyCentred | top)
|
|
*/
|
|
centredTop = 12,
|
|
|
|
/** Indicates that the item should be centred horizontally and placed at the bottom.
|
|
This is equivalent to (horizontallyCentred | bottom)
|
|
*/
|
|
centredBottom = 20,
|
|
|
|
/** Indicates that the item should be placed in the top-left corner.
|
|
This is equivalent to (left | top)
|
|
*/
|
|
topLeft = 9,
|
|
|
|
/** Indicates that the item should be placed in the top-right corner.
|
|
This is equivalent to (right | top)
|
|
*/
|
|
topRight = 10,
|
|
|
|
/** Indicates that the item should be placed in the bottom-left corner.
|
|
This is equivalent to (left | bottom)
|
|
*/
|
|
bottomLeft = 17,
|
|
|
|
/** Indicates that the item should be placed in the bottom-left corner.
|
|
This is equivalent to (right | bottom)
|
|
*/
|
|
bottomRight = 18
|
|
};
|
|
|
|
|
|
private:
|
|
//==============================================================================
|
|
int flags;
|
|
};
|
|
|
|
} // namespace juce
|