LayoutVertical.cc
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/*
* LayoutVertical.hh
*
* Created on: Sep, 2, 2014
* Author: AKKA
*/
#include "LayoutVertical.hh"
#include "PlotLogger.hh"
namespace plot {
/**
* @Brief Add a panel characterized by it's constraint to the layout
*/
void LayoutVertical::addPanel (PanelConstraint panelConstraint, double preferedWidth/*=-1*/, double preferedHeight/*=-1*/) {
double width=0, height=0;
switch (panelConstraint) {
case PanelConstraint::MaxWidth:
width = 1.0;
if (preferedHeight != -1)
height = preferedHeight;
else
height = _requestPanelHeight;
break;
case PanelConstraint::Square:
if (preferedWidth != -1)
width = preferedWidth;
else
width = _requestPanelHeight / _xyRatio;
if (preferedHeight != -1)
height = preferedHeight;
else
height = _requestPanelHeight;
break;
default:
// TODO lever exception ici ???
break;
}
_panelsInfo.push_back (new PanelInfo (panelConstraint, preferedWidth, preferedHeight, width, height));
}
/**
* @Brief Reset Layout internal parameters and compute optimized parameters
* like _panelHeight, _panelWidth, _panelYSpacing...
*/
void LayoutVertical::reset (void) {
// Reset current panels and position
_curPanel = 0;
_curYPosition = 0;
_maxWidthConstraintFound = false;
// Compute general data for the layout depending on
// - the number of panel
// - their constraint
_panelYSpacing = _requestPanelSpacing;
double layoutWidth, layoutHeight;
computeLayoutSize (layoutWidth, layoutHeight);
// Normalize width & height if more than 1
if (layoutHeight > 1) {
for (auto panelInfo : _panelsInfo) {
panelInfo->_preferedHeight /= layoutHeight;
panelInfo->_height /= layoutHeight;
}
_panelYSpacing /= layoutHeight;
}
if (layoutWidth > 1) {
for (auto panelInfo : _panelsInfo) {
if (panelInfo->_constraint != PanelConstraint::MaxWidth) {
panelInfo->_preferedWidth /= layoutWidth;
panelInfo->_width /= layoutWidth;
}
}
}
// Expand _requestPanelHeight if necessary and asked
if ((layoutHeight < 1) && (layoutWidth <= 1) && (_autoExpand == true)) {
expand (1.01);
expand (1.001);
expand (1.0001);
}
}
/**
* @Brief Increase panelHeight by step until layoutHeight reach (but not over step) 1.0
*/
void LayoutVertical::expand (double ratio) {
double layoutWidth, layoutHeight;
do
{
// Increase panelHeight by step and keep the same ratio for panelSpacing
_panelYSpacing *= ratio;
for (auto panelInfo : _panelsInfo) {
panelInfo->_height *= ratio;
if (panelInfo->_constraint != PanelConstraint::MaxWidth) {
if (panelInfo->_preferedWidth != -1) {
panelInfo->_width = panelInfo->_preferedWidth;
} else {
panelInfo->_width *= ratio;
}
}
}
computeLayoutSize (layoutWidth, layoutHeight);
} while ((layoutHeight < 1.0) && (layoutWidth <= 1.0));
// Restore last valid value for panelHeight and panelSpacing
_panelYSpacing /= ratio;
for (auto panelInfo : _panelsInfo) {
panelInfo->_height /= ratio;
if (panelInfo->_constraint != PanelConstraint::MaxWidth) {
if (panelInfo->_preferedWidth == -1) {
panelInfo->_width /= ratio;
}
}
}
computeLayoutSize (layoutWidth, layoutHeight);
}
void LayoutVertical::computeLayoutSize (double &layoutWidth, double &layoutHeight) {
layoutWidth = 0;
layoutHeight = 0;
_firstPanelHeightDelta = 0;
bool maxWidthConstraintFound = false;
for (auto panelInfo : _panelsInfo) {
layoutHeight += (panelInfo->_height + _panelYSpacing);
if (panelInfo->_width > layoutWidth)
layoutWidth = panelInfo->_width;
if ((maxWidthConstraintFound == false) &&
(panelInfo->_constraint == PanelConstraint::MaxWidth)) {
maxWidthConstraintFound = true;
_firstPanelHeightDelta = (_firstPanelHeightFactor-1.0) * panelInfo->_height;
layoutHeight += _firstPanelHeightDelta;
}
}
// Remove one spacing if more than 1 panel
if (_panelsInfo.size () > 1)
layoutHeight -= _panelYSpacing;
}
Bounds & LayoutVertical::getNextBounds (PanelConstraint panelConstraint) {
PanelInfo *panelInfo = _panelsInfo.at(_curPanel);
// Computes panels position on the layout depending on their constraints
switch (panelConstraint) {
case PanelConstraint::MaxWidth:
_computedPanelBounds._x = 0;
_computedPanelBounds._y = _curYPosition;
_computedPanelBounds._width = 1.0;
_computedPanelBounds._height = panelInfo->_height;
// The first MaxWidth panel can have an extra panel height
if (_maxWidthConstraintFound == false) {
_maxWidthConstraintFound = true;
_computedPanelBounds._height += _firstPanelHeightDelta;
_curYPosition += _firstPanelHeightDelta;
}
_curPanel++;
_curYPosition += (panelInfo->_height + _panelYSpacing);
break;
case PanelConstraint::Square:
// Compute x position of the SquarePanel on the line (centered)
_computedPanelBounds._x = 0.5 - (panelInfo->_width / 2.0);
_computedPanelBounds._y = _curYPosition;
_computedPanelBounds._width = panelInfo->_width;
_computedPanelBounds._height = panelInfo->_height;
_curPanel++;
_curYPosition += (panelInfo->_height + _panelYSpacing);
break;
default:
// TODO lever exception ici ???
break;
}
return _computedPanelBounds;
}
}