344 lines
11 KiB
C++
344 lines
11 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
|
||
|
|
{
|
||
|
|
|
||
|
|
StretchableLayoutManager::StretchableLayoutManager() {}
|
||
|
|
StretchableLayoutManager::~StretchableLayoutManager() {}
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
void StretchableLayoutManager::clearAllItems()
|
||
|
|
{
|
||
|
|
items.clear();
|
||
|
|
totalSize = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void StretchableLayoutManager::setItemLayout (const int itemIndex,
|
||
|
|
const double minimumSize,
|
||
|
|
const double maximumSize,
|
||
|
|
const double preferredSize)
|
||
|
|
{
|
||
|
|
auto* layout = getInfoFor (itemIndex);
|
||
|
|
|
||
|
|
if (layout == nullptr)
|
||
|
|
{
|
||
|
|
layout = new ItemLayoutProperties();
|
||
|
|
layout->itemIndex = itemIndex;
|
||
|
|
|
||
|
|
int i;
|
||
|
|
for (i = 0; i < items.size(); ++i)
|
||
|
|
if (items.getUnchecked (i)->itemIndex > itemIndex)
|
||
|
|
break;
|
||
|
|
|
||
|
|
items.insert (i, layout);
|
||
|
|
}
|
||
|
|
|
||
|
|
layout->minSize = minimumSize;
|
||
|
|
layout->maxSize = maximumSize;
|
||
|
|
layout->preferredSize = preferredSize;
|
||
|
|
layout->currentSize = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool StretchableLayoutManager::getItemLayout (const int itemIndex,
|
||
|
|
double& minimumSize,
|
||
|
|
double& maximumSize,
|
||
|
|
double& preferredSize) const
|
||
|
|
{
|
||
|
|
if (auto* layout = getInfoFor (itemIndex))
|
||
|
|
{
|
||
|
|
minimumSize = layout->minSize;
|
||
|
|
maximumSize = layout->maxSize;
|
||
|
|
preferredSize = layout->preferredSize;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
void StretchableLayoutManager::setTotalSize (const int newTotalSize)
|
||
|
|
{
|
||
|
|
totalSize = newTotalSize;
|
||
|
|
|
||
|
|
fitComponentsIntoSpace (0, items.size(), totalSize, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
int StretchableLayoutManager::getItemCurrentPosition (const int itemIndex) const
|
||
|
|
{
|
||
|
|
int pos = 0;
|
||
|
|
|
||
|
|
for (int i = 0; i < itemIndex; ++i)
|
||
|
|
if (auto* layout = getInfoFor (i))
|
||
|
|
pos += layout->currentSize;
|
||
|
|
|
||
|
|
return pos;
|
||
|
|
}
|
||
|
|
|
||
|
|
int StretchableLayoutManager::getItemCurrentAbsoluteSize (const int itemIndex) const
|
||
|
|
{
|
||
|
|
if (auto* layout = getInfoFor (itemIndex))
|
||
|
|
return layout->currentSize;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
double StretchableLayoutManager::getItemCurrentRelativeSize (const int itemIndex) const
|
||
|
|
{
|
||
|
|
if (auto* layout = getInfoFor (itemIndex))
|
||
|
|
return -layout->currentSize / (double) totalSize;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void StretchableLayoutManager::setItemPosition (const int itemIndex,
|
||
|
|
int newPosition)
|
||
|
|
{
|
||
|
|
for (int i = items.size(); --i >= 0;)
|
||
|
|
{
|
||
|
|
auto* layout = items.getUnchecked(i);
|
||
|
|
|
||
|
|
if (layout->itemIndex == itemIndex)
|
||
|
|
{
|
||
|
|
auto realTotalSize = jmax (totalSize, getMinimumSizeOfItems (0, items.size()));
|
||
|
|
auto minSizeAfterThisComp = getMinimumSizeOfItems (i, items.size());
|
||
|
|
auto maxSizeAfterThisComp = getMaximumSizeOfItems (i + 1, items.size());
|
||
|
|
|
||
|
|
newPosition = jmax (newPosition, totalSize - maxSizeAfterThisComp - layout->currentSize);
|
||
|
|
newPosition = jmin (newPosition, realTotalSize - minSizeAfterThisComp);
|
||
|
|
|
||
|
|
auto endPos = fitComponentsIntoSpace (0, i, newPosition, 0);
|
||
|
|
|
||
|
|
endPos += layout->currentSize;
|
||
|
|
|
||
|
|
fitComponentsIntoSpace (i + 1, items.size(), totalSize - endPos, endPos);
|
||
|
|
updatePrefSizesToMatchCurrentPositions();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
void StretchableLayoutManager::layOutComponents (Component** const components,
|
||
|
|
int numComponents,
|
||
|
|
int x, int y, int w, int h,
|
||
|
|
const bool vertically,
|
||
|
|
const bool resizeOtherDimension)
|
||
|
|
{
|
||
|
|
setTotalSize (vertically ? h : w);
|
||
|
|
int pos = vertically ? y : x;
|
||
|
|
|
||
|
|
for (int i = 0; i < numComponents; ++i)
|
||
|
|
{
|
||
|
|
if (auto* layout = getInfoFor (i))
|
||
|
|
{
|
||
|
|
if (auto* c = components[i])
|
||
|
|
{
|
||
|
|
if (i == numComponents - 1)
|
||
|
|
{
|
||
|
|
// if it's the last item, crop it to exactly fit the available space..
|
||
|
|
if (resizeOtherDimension)
|
||
|
|
{
|
||
|
|
if (vertically)
|
||
|
|
c->setBounds (x, pos, w, jmax (layout->currentSize, h - pos));
|
||
|
|
else
|
||
|
|
c->setBounds (pos, y, jmax (layout->currentSize, w - pos), h);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (vertically)
|
||
|
|
c->setBounds (c->getX(), pos, c->getWidth(), jmax (layout->currentSize, h - pos));
|
||
|
|
else
|
||
|
|
c->setBounds (pos, c->getY(), jmax (layout->currentSize, w - pos), c->getHeight());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (resizeOtherDimension)
|
||
|
|
{
|
||
|
|
if (vertically)
|
||
|
|
c->setBounds (x, pos, w, layout->currentSize);
|
||
|
|
else
|
||
|
|
c->setBounds (pos, y, layout->currentSize, h);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
if (vertically)
|
||
|
|
c->setBounds (c->getX(), pos, c->getWidth(), layout->currentSize);
|
||
|
|
else
|
||
|
|
c->setBounds (pos, c->getY(), layout->currentSize, c->getHeight());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
pos += layout->currentSize;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
//==============================================================================
|
||
|
|
StretchableLayoutManager::ItemLayoutProperties* StretchableLayoutManager::getInfoFor (const int itemIndex) const
|
||
|
|
{
|
||
|
|
for (auto* i : items)
|
||
|
|
if (i->itemIndex == itemIndex)
|
||
|
|
return i;
|
||
|
|
|
||
|
|
return nullptr;
|
||
|
|
}
|
||
|
|
|
||
|
|
int StretchableLayoutManager::fitComponentsIntoSpace (const int startIndex,
|
||
|
|
const int endIndex,
|
||
|
|
const int availableSpace,
|
||
|
|
int startPos)
|
||
|
|
{
|
||
|
|
// calculate the total sizes
|
||
|
|
double totalIdealSize = 0.0;
|
||
|
|
int totalMinimums = 0;
|
||
|
|
|
||
|
|
for (int i = startIndex; i < endIndex; ++i)
|
||
|
|
{
|
||
|
|
auto* layout = items.getUnchecked (i);
|
||
|
|
|
||
|
|
layout->currentSize = sizeToRealSize (layout->minSize, totalSize);
|
||
|
|
|
||
|
|
totalMinimums += layout->currentSize;
|
||
|
|
totalIdealSize += sizeToRealSize (layout->preferredSize, totalSize);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (totalIdealSize <= 0)
|
||
|
|
totalIdealSize = 1.0;
|
||
|
|
|
||
|
|
// now calc the best sizes..
|
||
|
|
int extraSpace = availableSpace - totalMinimums;
|
||
|
|
|
||
|
|
while (extraSpace > 0)
|
||
|
|
{
|
||
|
|
int numWantingMoreSpace = 0;
|
||
|
|
int numHavingTakenExtraSpace = 0;
|
||
|
|
|
||
|
|
// first figure out how many comps want a slice of the extra space..
|
||
|
|
for (int i = startIndex; i < endIndex; ++i)
|
||
|
|
{
|
||
|
|
auto* layout = items.getUnchecked (i);
|
||
|
|
|
||
|
|
auto sizeWanted = sizeToRealSize (layout->preferredSize, totalSize);
|
||
|
|
|
||
|
|
auto bestSize = jlimit (layout->currentSize,
|
||
|
|
jmax (layout->currentSize,
|
||
|
|
sizeToRealSize (layout->maxSize, totalSize)),
|
||
|
|
roundToInt (sizeWanted * availableSpace / totalIdealSize));
|
||
|
|
|
||
|
|
if (bestSize > layout->currentSize)
|
||
|
|
++numWantingMoreSpace;
|
||
|
|
}
|
||
|
|
|
||
|
|
// ..share out the extra space..
|
||
|
|
for (int i = startIndex; i < endIndex; ++i)
|
||
|
|
{
|
||
|
|
auto* layout = items.getUnchecked (i);
|
||
|
|
|
||
|
|
auto sizeWanted = sizeToRealSize (layout->preferredSize, totalSize);
|
||
|
|
|
||
|
|
auto bestSize = jlimit (layout->currentSize,
|
||
|
|
jmax (layout->currentSize, sizeToRealSize (layout->maxSize, totalSize)),
|
||
|
|
roundToInt (sizeWanted * availableSpace / totalIdealSize));
|
||
|
|
|
||
|
|
auto extraWanted = bestSize - layout->currentSize;
|
||
|
|
|
||
|
|
if (extraWanted > 0)
|
||
|
|
{
|
||
|
|
auto extraAllowed = jmin (extraWanted,
|
||
|
|
extraSpace / jmax (1, numWantingMoreSpace));
|
||
|
|
|
||
|
|
if (extraAllowed > 0)
|
||
|
|
{
|
||
|
|
++numHavingTakenExtraSpace;
|
||
|
|
--numWantingMoreSpace;
|
||
|
|
|
||
|
|
layout->currentSize += extraAllowed;
|
||
|
|
extraSpace -= extraAllowed;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (numHavingTakenExtraSpace <= 0)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
// ..and calculate the end position
|
||
|
|
for (int i = startIndex; i < endIndex; ++i)
|
||
|
|
{
|
||
|
|
auto* layout = items.getUnchecked(i);
|
||
|
|
startPos += layout->currentSize;
|
||
|
|
}
|
||
|
|
|
||
|
|
return startPos;
|
||
|
|
}
|
||
|
|
|
||
|
|
int StretchableLayoutManager::getMinimumSizeOfItems (const int startIndex,
|
||
|
|
const int endIndex) const
|
||
|
|
{
|
||
|
|
int totalMinimums = 0;
|
||
|
|
|
||
|
|
for (int i = startIndex; i < endIndex; ++i)
|
||
|
|
totalMinimums += sizeToRealSize (items.getUnchecked (i)->minSize, totalSize);
|
||
|
|
|
||
|
|
return totalMinimums;
|
||
|
|
}
|
||
|
|
|
||
|
|
int StretchableLayoutManager::getMaximumSizeOfItems (const int startIndex, const int endIndex) const
|
||
|
|
{
|
||
|
|
int totalMaximums = 0;
|
||
|
|
|
||
|
|
for (int i = startIndex; i < endIndex; ++i)
|
||
|
|
totalMaximums += sizeToRealSize (items.getUnchecked (i)->maxSize, totalSize);
|
||
|
|
|
||
|
|
return totalMaximums;
|
||
|
|
}
|
||
|
|
|
||
|
|
void StretchableLayoutManager::updatePrefSizesToMatchCurrentPositions()
|
||
|
|
{
|
||
|
|
for (int i = 0; i < items.size(); ++i)
|
||
|
|
{
|
||
|
|
auto* layout = items.getUnchecked (i);
|
||
|
|
|
||
|
|
layout->preferredSize
|
||
|
|
= (layout->preferredSize < 0) ? getItemCurrentRelativeSize (i)
|
||
|
|
: getItemCurrentAbsoluteSize (i);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int StretchableLayoutManager::sizeToRealSize (double size, int totalSpace)
|
||
|
|
{
|
||
|
|
if (size < 0)
|
||
|
|
size *= -totalSpace;
|
||
|
|
|
||
|
|
return roundToInt (size);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace juce
|