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Text highlight tools basics

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Jakub Melka
2020-12-11 18:59:39 +01:00
parent 11ad8f2821
commit dc55950050
13 changed files with 856 additions and 18 deletions
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139
PdfForQtLib/sources/pdfadvancedtools.cpp
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@ -19,6 +19,7 @@
#include "pdfdocumentbuilder.h"
#include "pdfdrawwidget.h"
#include "pdfutils.h"
#include "pdfcompiler.h"
#include <QActionGroup>
#include <QInputDialog>
@ -856,4 +857,142 @@ void PDFCreateStampTool::onPointPicked(PDFInteger pageIndex, QPointF pagePoint)
setActive(false);
}
PDFCreateHighlightTextTool::PDFCreateHighlightTextTool(PDFDrawWidgetProxy* proxy, PDFToolManager* toolManager, AnnotationType type, QAction* action, QObject* parent) :
BaseClass(proxy, action, parent),
m_toolManager(toolManager),
m_type(type),
m_isCursorOverText(false)
{
updateActions();
}
void PDFCreateHighlightTextTool::drawPage(QPainter* painter,
PDFInteger pageIndex,
const PDFPrecompiledPage* compiledPage,
PDFTextLayoutGetter& layoutGetter,
const QMatrix& pagePointToDevicePointMatrix,
QList<PDFRenderError>& errors) const
{
Q_UNUSED(compiledPage);
Q_UNUSED(errors);
pdf::PDFTextSelectionPainter textSelectionPainter(&m_textSelection);
textSelectionPainter.draw(painter, pageIndex, layoutGetter, pagePointToDevicePointMatrix);
}
void PDFCreateHighlightTextTool::mousePressEvent(QWidget* widget, QMouseEvent* event)
{
Q_UNUSED(widget);
if (event->button() == Qt::LeftButton)
{
QPointF pagePoint;
const PDFInteger pageIndex = getProxy()->getPageUnderPoint(event->pos(), &pagePoint);
if (pageIndex != -1)
{
m_selectionInfo.pageIndex = pageIndex;
m_selectionInfo.selectionStartPoint = pagePoint;
event->accept();
}
else
{
m_selectionInfo = SelectionInfo();
}
setSelection(pdf::PDFTextSelection());
updateCursor();
}
}
void PDFCreateHighlightTextTool::mouseReleaseEvent(QWidget* widget, QMouseEvent* event)
{
Q_UNUSED(widget);
if (event->button() == Qt::LeftButton)
{
if (m_selectionInfo.pageIndex != -1)
{
QPointF pagePoint;
const PDFInteger pageIndex = getProxy()->getPageUnderPoint(event->pos(), &pagePoint);
if (m_selectionInfo.pageIndex == pageIndex)
{
// Jakub Melka: handle the selection
PDFTextLayout textLayout = getProxy()->getTextLayoutCompiler()->getTextLayoutLazy(pageIndex);
setSelection(textLayout.createTextSelection(pageIndex, m_selectionInfo.selectionStartPoint, pagePoint));
}
else
{
setSelection(pdf::PDFTextSelection());
}
m_selectionInfo = SelectionInfo();
event->accept();
updateCursor();
}
}
}
void PDFCreateHighlightTextTool::mouseMoveEvent(QWidget* widget, QMouseEvent* event)
{
Q_UNUSED(widget);
QPointF pagePoint;
const PDFInteger pageIndex = getProxy()->getPageUnderPoint(event->pos(), &pagePoint);
PDFTextLayout textLayout = getProxy()->getTextLayoutCompiler()->getTextLayoutLazy(pageIndex);
m_isCursorOverText = textLayout.isHoveringOverTextBlock(pagePoint);
if (m_selectionInfo.pageIndex != -1)
{
if (m_selectionInfo.pageIndex == pageIndex)
{
// Jakub Melka: handle the selection
setSelection(textLayout.createTextSelection(pageIndex, m_selectionInfo.selectionStartPoint, pagePoint));
}
else
{
setSelection(pdf::PDFTextSelection());
}
event->accept();
}
updateCursor();
}
void PDFCreateHighlightTextTool::setActiveImpl(bool active)
{
BaseClass::setActiveImpl(active);
if (!active)
{
// Just clear the text selection
setSelection(PDFTextSelection());
}
}
void PDFCreateHighlightTextTool::updateCursor()
{
if (isActive())
{
if (m_isCursorOverText)
{
setCursor(QCursor(Qt::IBeamCursor));
}
else
{
setCursor(QCursor(Qt::ArrowCursor));
}
}
}
void PDFCreateHighlightTextTool::setSelection(PDFTextSelection&& textSelection)
{
if (m_textSelection != textSelection)
{
m_textSelection = qMove(textSelection);
getProxy()->repaintNeeded();
}
}
} // namespace pdf