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Preview: scale SVG via QSvgRenderer

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This commit is contained in:
Le Tan 2018-08-15 19:55:20 +08:00
parent 33f4631f91
commit 35f66ba88e
3 changed files with 38 additions and 10 deletions
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16
src/utils/vutils.cpp
View File

@ -29,6 +29,8 @@
#include <QFormLayout> #include <QFormLayout>
#include <QInputDialog> #include <QInputDialog>
#include <QFontDatabase> #include <QFontDatabase>
#include <QSvgRenderer>
#include <QPainter>
#include "vorphanfile.h" #include "vorphanfile.h"
#include "vnote.h" #include "vnote.h"
@ -1653,3 +1655,17 @@ int VUtils::elapsedTime(bool p_reset)
return tm.restart(); return tm.restart();
} }
QPixmap VUtils::svgToPixmap(const QByteArray &p_content, qreal p_factor)
{
QSvgRenderer renderer(p_content);
QSize deSz = renderer.defaultSize();
if (p_factor > 0) {
deSz *= p_factor;
}
QPixmap pm(deSz);
QPainter painter(&pm);
renderer.render(&painter);
return pm;
}

4
src/utils/vutils.h
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@ -359,6 +359,10 @@ public:
static int elapsedTime(bool p_reset = false); static int elapsedTime(bool p_reset = false);
// Render SVG to Pixmap.
// @p_factor: < 0 indicates no scaling.
static QPixmap svgToPixmap(const QByteArray &p_content, qreal p_factor);
// Regular expression for image link. // Regular expression for image link.
// ![image title]( http://github.com/tamlok/vnote.jpg "alt text" =200x100) // ![image title]( http://github.com/tamlok/vnote.jpg "alt text" =200x100)
// Captured texts (need to be trimmed): // Captured texts (need to be trimmed):

28
src/vlivepreviewhelper.h
View File

@ -149,11 +149,15 @@ private:
m_image.loadFromData(p_data, m_image.loadFromData(p_data,
p_format.toLocal8Bit().data()); p_format.toLocal8Bit().data());
} else { } else {
QPixmap tmpImg; if (p_format == "svg") {
tmpImg.loadFromData(p_data, m_image = VUtils::svgToPixmap(p_data, p_scaleFactor);
p_format.toLocal8Bit().data()); } else {
m_image = tmpImg.scaledToWidth(tmpImg.width() * p_scaleFactor, QPixmap tmpImg;
Qt::SmoothTransformation); tmpImg.loadFromData(p_data,
p_format.toLocal8Bit().data());
m_image = tmpImg.scaledToWidth(tmpImg.width() * p_scaleFactor,
Qt::SmoothTransformation);
}
} }
} }
} }
@ -171,11 +175,15 @@ private:
m_image.loadFromData(p_data.toUtf8(), m_image.loadFromData(p_data.toUtf8(),
p_format.toLocal8Bit().data()); p_format.toLocal8Bit().data());
} else { } else {
QPixmap tmpImg; if (p_format == "svg") {
tmpImg.loadFromData(p_data.toUtf8(), m_image = VUtils::svgToPixmap(p_data.toUtf8(), p_scaleFactor);
p_format.toLocal8Bit().data()); } else {
m_image = tmpImg.scaledToWidth(tmpImg.width() * p_scaleFactor, QPixmap tmpImg;
Qt::SmoothTransformation); tmpImg.loadFromData(p_data.toUtf8(),
p_format.toLocal8Bit().data());
m_image = tmpImg.scaledToWidth(tmpImg.width() * p_scaleFactor,
Qt::SmoothTransformation);
}
} }
} }
} }