*/
#include <config.h>
+#include <math.h> /* ceil */
#include "GuiImage.h"
#include "qt_helpers.h"
-#include "debug.h"
#include "Format.h"
#include "graphics/GraphicsParams.h"
+#include "support/debug.h"
#include "support/FileName.h"
#include "support/lstrings.h" // ascii_lowercase
#include <QPainter>
-#include <QImage>
#include <QImageReader>
-#include <boost/bind.hpp>
-#include <boost/tuple/tuple.hpp>
-
-using lyx::support::ascii_lowercase;
-
-using boost::bind;
-
-using std::endl;
-using std::equal_to;
-using std::find_if;
-using std::string;
+using namespace std;
+using namespace lyx::support;
namespace lyx {
namespace graphics {
-/// Access to this class is through this static method.
-Image::ImagePtr GuiImage::newImage()
+/// Implement factory method defined in GraphicsImage.h
+Image * newImage()
{
- ImagePtr ptr;
- ptr.reset(new GuiImage);
- return ptr;
+ return new GuiImage;
}
-/// Return the list of loadable formats.
-Image::FormatList GuiImage::loadableFormats()
-{
- static FormatList fmts;
-
- if (!fmts.empty())
- return fmts;
-
- // The formats recognised by LyX
- Formats::const_iterator begin = formats.begin();
- Formats::const_iterator end = formats.end();
-
-
-// LYXERR(Debug::GRAPHICS)
-// << "D:/msys/home/yns/src/lyx-devel/lib/images/banner.png mis of format: "
-// << fromqstr(Pic.pictureFormat("D:/msys/home/yns/src/lyx-devel/lib/images/banner.png"))
-// << endl;
-// if (Pic.pictureFormat("D:/msys/home/yns/src/lyx-devel/lib/images/banner.png"))
-// LYXERR(Debug::GRAPHICS)
-// << "pictureFormat not returned NULL\n" << endl;
-// << "Supported formats are: " << Pic.inputFormats() << endl;
-
- QList<QByteArray> qt_formats = QImageReader::supportedImageFormats();
-
- LYXERR(Debug::GRAPHICS)
- << "\nThe image loader can load the following directly:\n";
-
- if (qt_formats.empty()) {
- LYXERR(Debug::GRAPHICS)
- << "\nQt4 Problem: No Format available!" << endl;
- }
-
- for (QList<QByteArray>::const_iterator it = qt_formats.begin(); it != qt_formats.end(); ++it) {
-
- LYXERR(Debug::GRAPHICS) << (const char *) *it << ", ";
-
- string ext = ascii_lowercase((const char *) *it);
-
- // special case
- if (ext == "jpeg")
- ext = "jpg";
-
- Formats::const_iterator fit =
- find_if(begin, end,
- bind(equal_to<string>(),
- bind(&Format::extension, _1),
- ext));
- if (fit != end)
- fmts.push_back(fit->name());
- }
-
- if (lyxerr.debugging()) {
- LYXERR(Debug::GRAPHICS)
- << "\nOf these, LyX recognises the following formats:\n";
-
- FormatList::const_iterator fbegin = fmts.begin();
- FormatList::const_iterator fend = fmts.end();
- for (FormatList::const_iterator fit = fbegin; fit != fend; ++fit) {
- if (fit != fbegin) {
- LYXERR(Debug::GRAPHICS) << ", ";
- }
- LYXERR(Debug::GRAPHICS) << *fit;
- }
- LYXERR(Debug::GRAPHICS) << '\n' << endl;
- }
-
- return fmts;
-}
+GuiImage::GuiImage() : is_transformed_(false)
+{}
GuiImage::GuiImage(GuiImage const & other)
: Image(other), original_(other.original_),
- transformed_(other.transformed_),
- transformed_pixmap_(other.transformed_pixmap_)
+ transformed_(other.transformed_), is_transformed_(other.is_transformed_),
+ fname_(other.fname_)
{}
-Image * GuiImage::clone_impl() const
+Image * GuiImage::clone() const
{
return new GuiImage(*this);
}
-unsigned int GuiImage::getWidth_impl() const
+QImage const & GuiImage::image() const
{
- return transformed_.width();
+ return is_transformed_ ? transformed_ : original_;
}
-unsigned int GuiImage::getHeight_impl() const
+unsigned int GuiImage::width() const
{
- return transformed_.height();
+#if QT_VERSION >= 0x050000
+ return static_cast<unsigned int>(ceil(is_transformed_ ?
+ (transformed_.width() / transformed_.devicePixelRatio()) :
+ (original_.width() / original_.devicePixelRatio())));
+#else
+ return is_transformed_ ? transformed_.width() : original_.width();
+#endif
}
-void GuiImage::load_impl(support::FileName const & filename)
+unsigned int GuiImage::height() const
{
- if (!original_.isNull()) {
- LYXERR(Debug::GRAPHICS)
- << "Image is loaded already!" << endl;
- finishedLoading(false);
- return;
- }
-
- if (!original_.load(toqstr(filename.absFilename()))) {
- LYXERR(Debug::GRAPHICS)
- << "Unable to open image" << endl;
- finishedLoading(false);
- return;
- }
- transformed_ = original_;
- finishedLoading(true);
+#if QT_VERSION >= 0x050000
+ return static_cast<unsigned int>(ceil(is_transformed_ ?
+ (transformed_.height() / transformed_.devicePixelRatio()) :
+ (original_.height() / original_.devicePixelRatio())));
+#else
+ return is_transformed_ ? transformed_.height() : original_.height();
+#endif
}
-// This code is taken from KImageEffect::toGray
-static QImage & toGray(QImage & img)
+bool GuiImage::load(FileName const & filename)
{
- if (img.width() == 0 || img.height() == 0)
- return img;
-
- int const pixels = img.depth() > 8 ?
- img.width() * img.height() : img.numColors();
+ if (!original_.isNull()) {
+ LYXERR(Debug::GRAPHICS, "Image is loaded already!");
+ return false;
+ }
+ fname_ = toqstr(filename.absFileName());
+ return load();
+}
- unsigned int *data = img.depth() > 8 ?
- reinterpret_cast<unsigned int *>(img.bits()) :
- reinterpret_cast<unsigned int *>(&img.colorTable()[0]);
- for(int i = 0; i < pixels; ++i){
- int const val = qGray(data[i]);
- data[i] = qRgba(val, val, val, qAlpha(data[i]));
+bool GuiImage::load()
+{
+ if (!original_.load(fname_)) {
+ LYXERR(Debug::GRAPHICS, "Unable to open image");
+ return false;
}
- return img;
+ return true;
}
-bool GuiImage::setPixmap_impl(Params const & params)
+bool GuiImage::setPixmap(Params const & params)
{
- if (original_.isNull() || params.display == NoDisplay)
+ if (!params.display)
return false;
- switch (params.display) {
- case GrayscaleDisplay: {
- toGray(transformed_);
- break;
+ if (original_.isNull()) {
+ if (!load())
+ return false;
}
- case MonochromeDisplay: {
- transformed_.convertToFormat(transformed_.format(), Qt::MonoOnly);
- break;
- }
+#if QT_VERSION >= 0x050000
+ original_.setDevicePixelRatio(params.pixel_ratio);
+#endif
- default:
- break;
- }
+ is_transformed_ = clip(params);
+ is_transformed_ |= rotate(params);
+ is_transformed_ |= scale(params);
+
+ // Clear the pixmap to save some memory.
+ if (is_transformed_)
+ original_ = QImage();
+ else
+ transformed_ = QImage();
- transformed_pixmap_ = QPixmap::fromImage(transformed_);
return true;
}
-void GuiImage::clip_impl(Params const & params)
+bool GuiImage::clip(Params const & params)
{
- if (transformed_.isNull())
- return;
-
if (params.bb.empty())
// No clipping is necessary.
- return;
+ return false;
+
+#if QT_VERSION >= 0x050000
+ double const pixelRatio = is_transformed_ ? transformed_.devicePixelRatio() : original_.devicePixelRatio();
+ int const new_width = static_cast<int>((params.bb.xr.inBP() - params.bb.xl.inBP()) * pixelRatio);
+ int const new_height = static_cast<int>((params.bb.yt.inBP() - params.bb.yb.inBP()) * pixelRatio);
+#else
+ int const new_width = static_cast<int>((params.bb.xr.inBP() - params.bb.xl.inBP()));
+ int const new_height = static_cast<int>((params.bb.yt.inBP() - params.bb.yb.inBP()));
+#endif
- int const new_width = params.bb.xr - params.bb.xl;
- int const new_height = params.bb.yt - params.bb.yb;
+ QImage const & image = is_transformed_ ? transformed_ : original_;
// No need to check if the width, height are > 0 because the
// Bounding Box would be empty() in this case.
- if (new_width > original_.width() || new_height > original_.height()) {
+ if (new_width > image.width() || new_height > image.height()) {
// Bounds are invalid.
- return;
+ return false;
}
- if (new_width == original_.width() && new_height == original_.height())
- return;
+ if (new_width == image.width() && new_height == image.height())
+ return false;
- int const xoffset_l = params.bb.xl;
- int const yoffset_t = (original_.height() > int(params.bb.yt) ?
- original_.height() - params.bb.yt : 0);
+ int const xoffset_l = params.bb.xl.inBP();
+ int const yoffset_t = (image.height() > params.bb.yt.inBP())
+ ? image.height() - params.bb.yt.inBP() : 0;
- transformed_ = original_.copy(xoffset_l, yoffset_t,
- new_width, new_height);
+ transformed_ = image.copy(xoffset_l, yoffset_t, new_width, new_height);
+ return true;
}
-void GuiImage::rotate_impl(Params const & params)
+bool GuiImage::rotate(Params const & params)
{
- if (transformed_.isNull())
- return;
-
if (!params.angle)
- return;
+ return false;
+ QImage const & image = is_transformed_ ? transformed_ : original_;
QMatrix m;
- m.rotate(-params.angle);
-
- transformed_ = transformed_.transformed(m);
+ m.rotate(- params.angle);
+ transformed_ = image.transformed(m);
+ return true;
}
-void GuiImage::scale_impl(Params const & params)
+bool GuiImage::scale(Params const & params)
{
- if (transformed_.isNull())
- return;
+ QImage const & image = is_transformed_ ? transformed_ : original_;
- unsigned int width;
- unsigned int height;
- boost::tie(width, height) = getScaledDimensions(params);
+ if (params.scale == 100)
+ return false;
+
+#if QT_VERSION >= 0x050000
+ double const pixelRatio = is_transformed_ ? transformed_.devicePixelRatio() : original_.devicePixelRatio();
+ qreal scale = qreal(params.scale) / 100.0 * pixelRatio;
+#else
+ qreal scale = qreal(params.scale) / 100.0;
+#endif
- if (width == getWidth() && height == getHeight())
- return;
+#if (QT_VERSION >= 0x040500) && (QT_VERSION <= 0x040502)
+ // Due to a bug in Qt, LyX will crash for certain
+ // scaling factors and sizes of the image.
+ // see bug #5957: http://www.lyx.org/trac/ticket/5957
+ scale += 0.0001;
+#endif
QMatrix m;
- m.scale(double(width) / getWidth(), double(height) / getHeight());
- transformed_ = transformed_.transformed(m);
+ m.scale(scale, scale);
+ transformed_ = image.transformed(m);
+ return true;
}
} // namespace graphics
projects / lyx.git / blobdiff