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Improved text layout handling

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This commit is contained in:
Martin Tůma
2018-11-28 23:39:33 +01:00
parent 085a90e0e5
commit 8567ef44d1
9 changed files with 117 additions and 63 deletions
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69
src/text.cpp
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@ -1,4 +1,4 @@
#include <QFontMetrics>
#include <QFontMetrics>
#include <QPainter>
#include "text.h"
#include "textpointitem.h"
@ -20,15 +20,36 @@ void Text::render(QPainter *painter) const
}
}
void Text::addLabel(const QString &text, const QPointF &pos, bool overlap,
const QImage &icon)
void Text::addLabel(const QString &text, const QImage &icon,
const QPainterPath &path)
{
TextPointItem *ti = new TextPointItem(text, pos, _font, _maxWidth, _anchor,
icon);
if (!overlap && !_sceneRect.contains(ti->boundingRect())) {
delete ti;
return;
TextItem *ti;
switch (_placement) {
case Line:
if (_alignment == Viewport)
ti = new TextPointItem(text, path.elementAt(0), _font,
_maxWidth, _anchor, icon);
else
ti = new TextPathItem(text, path, _font, _maxAngle, _sceneRect);
if (!_sceneRect.contains(ti->boundingRect()))
ti->setVisible(false);
break;
case LineCenter:
ti = new TextPointItem(text, path.pointAtPercent(0.5), _font,
_maxWidth, _anchor, icon);
if (!_sceneRect.contains(ti->boundingRect()))
ti->setVisible(false);
break;
default:
ti = new TextPointItem(text, path.elementAt(0), _font, _maxWidth,
_anchor, icon);
if (_alignment == Viewport
&& !_sceneRect.contains(ti->boundingRect()))
ti->setVisible(false);
break;
}
ti->setPen(_pen);
addItem(ti);
@ -37,23 +58,6 @@ void Text::addLabel(const QString &text, const QPointF &pos, bool overlap,
ci[i]->setVisible(false);
}
void Text::addLabel(const QString &text, const QPainterPath &path)
{
TextPathItem *ti = new TextPathItem(text, path, _font, _maxAngle,
_sceneRect);
if (!_sceneRect.contains(ti->boundingRect())) {
delete ti;
return;
}
ti->setPen(_pen);
addItem(ti);
QList<TextItem*> ci = collidingItems(ti);
for (int i = 0; i < ci.size(); i++)
ci[i]->setVisible(false);
}
QList<TextItem*> Text::collidingItems(const TextItem *item) const
{
QList<TextItem*> list;
@ -61,7 +65,7 @@ QList<TextItem*> Text::collidingItems(const TextItem *item) const
if (!item->isVisible())
return list;
for (int i = 0; i < _items.size();i ++) {
for (int i = 0; i < _items.size(); i++) {
const TextItem *ti = _items.at(i);
if (ti != item && ti->isVisible() && ti->collidesWithItem(item))
list.append(const_cast<TextItem*>(ti));
@ -69,3 +73,16 @@ QList<TextItem*> Text::collidingItems(const TextItem *item) const
return list;
}
void Text::setSymbolPlacement(SymbolPlacement placement)
{
_placement = placement;
if (_placement != Text::Point) {
for (int i = 0; i < _items.size(); i++) {
TextItem *ti = _items[i];
if (!_sceneRect.contains(ti->boundingRect()))
ti->setVisible(false);
}
}
}