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Support SVG image loading

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This commit is contained in:
Dan Paulat 2024-03-04 00:51:14 -06:00
parent 2a8a16e79f
commit 1ad188546a
2 changed files with 84 additions and 20 deletions
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101
scwx-qt/source/scwx/qt/util/texture_atlas.cpp
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@ -20,6 +20,9 @@
#include <stb_image.h>
#include <stb_rect_pack.h>
#include <QFile>
#include <QFileInfo>
#include <QPainter>
#include <QSvgRenderer>
#include <QUrl>
#if defined(_MSC_VER)
@ -49,6 +52,11 @@ public:
static std::shared_ptr<boost::gil::rgba8_image_t>
LoadImage(const std::string& imagePath);
static std::shared_ptr<boost::gil::rgba8_image_t>
ReadPngFile(const QString& imagePath);
static std::shared_ptr<boost::gil::rgba8_image_t>
ReadSvgFile(const QString& imagePath);
std::vector<std::shared_ptr<boost::gil::rgba8_image_t>>
registeredTextures_ {};
std::shared_mutex registeredTextureMutex_ {};
@ -376,34 +384,23 @@ TextureAtlas::Impl::LoadImage(const std::string& imagePath)
{
logger_->debug("Loading image: {}", imagePath);
std::shared_ptr<boost::gil::rgba8_image_t> image =
std::make_shared<boost::gil::rgba8_image_t>();
std::shared_ptr<boost::gil::rgba8_image_t> image = nullptr;
QUrl url = QUrl::fromUserInput(QString::fromStdString(imagePath));
QString qImagePath = QString::fromStdString(imagePath);
QUrl url = QUrl::fromUserInput(qImagePath);
if (url.isLocalFile())
{
QFile imageFile(imagePath.c_str());
QString suffix = QFileInfo(qImagePath).suffix().toLower();
imageFile.open(QIODevice::ReadOnly);
if (!imageFile.isOpen())
if (suffix == "svg")
{
logger_->error("Could not open image: {}", imagePath);
return nullptr;
image = ReadSvgFile(qImagePath);
}
boost::iostreams::stream<util::IoDeviceSource> dataStream(imageFile);
try
else
{
boost::gil::read_and_convert_image(
dataStream, *image, boost::gil::png_tag());
}
catch (const std::exception& ex)
{
logger_->error("Error reading image: {}", ex.what());
return nullptr;
image = ReadPngFile(qImagePath);
}
}
else
@ -442,6 +439,7 @@ TextureAtlas::Impl::LoadImage(const std::string& imagePath)
width * desiredChannels);
// Copy the view to the destination image
image = std::make_shared<boost::gil::rgba8_image_t>();
*image = boost::gil::rgba8_image_t(stbView);
auto& view = boost::gil::view(*image);
@ -477,6 +475,69 @@ TextureAtlas::Impl::LoadImage(const std::string& imagePath)
return image;
}
std::shared_ptr<boost::gil::rgba8_image_t>
TextureAtlas::Impl::ReadPngFile(const QString& imagePath)
{
QFile imageFile(imagePath);
imageFile.open(QIODevice::ReadOnly);
if (!imageFile.isOpen())
{
logger_->error("Could not open image: {}", imagePath.toStdString());
return nullptr;
}
boost::iostreams::stream<util::IoDeviceSource> dataStream(imageFile);
std::shared_ptr<boost::gil::rgba8_image_t> image =
std::make_shared<boost::gil::rgba8_image_t>();
try
{
boost::gil::read_and_convert_image(
dataStream, *image, boost::gil::png_tag());
}
catch (const std::exception& ex)
{
logger_->error("Error reading image: {}", ex.what());
return nullptr;
}
return image;
}
std::shared_ptr<boost::gil::rgba8_image_t>
TextureAtlas::Impl::ReadSvgFile(const QString& imagePath)
{
QSvgRenderer renderer {imagePath};
QPixmap pixmap {renderer.defaultSize()};
pixmap.fill(Qt::GlobalColor::transparent);
QPainter painter {&pixmap};
renderer.render(&painter, pixmap.rect());
QImage qImage = pixmap.toImage();
std::shared_ptr<boost::gil::rgba8_image_t> image = nullptr;
if (qImage.width() > 0 && qImage.height() > 0)
{
// Convert to ARGB32 format if not already (equivalent to bgra8_pixel_t)
qImage.convertTo(QImage::Format_ARGB32);
// Create a view pointing to the underlying QImage pixel data
auto view = boost::gil::interleaved_view(
qImage.width(),
qImage.height(),
reinterpret_cast<const boost::gil::bgra8_pixel_t*>(qImage.constBits()),
qImage.width() * 4);
image = std::make_shared<boost::gil::rgba8_image_t>(view);
}
return image;
}
TextureAtlas& TextureAtlas::Instance()
{
static TextureAtlas instance_ {};