lyx_mirror/src/frontends/qt4/GuiImage.cpp

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/**
* \file GuiImage.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Angus Leeming
* \author John Levon
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "GuiImage.h"
#include "qt_helpers.h"
#include "Format.h"
#include "graphics/GraphicsParams.h"
#include "support/debug.h"
Rename files in src/support, step one. src/support/package.h src/support/Package.h Package src/support/package.C.in src/support/Package.C.in Package src/support/path.h src/support/Path.h Path src/support/fs_extras.h src/support/fs_extras.h NOCLASSES src/support/RandomAccessList.h src/support/RandomAccessList.h RandomAccessList src/support/lyxmanip.h src/support/lyxmanip.h NOCLASSES src/support/rename.C src/support/rename.cpp NOCLASSES src/support/abort.C src/support/abort.cpp NOCLASSES src/support/lyxlib.h src/support/lyxlib.h NOCLASSES src/support/ExceptionMessage.h src/support/ExceptionMessage.h ExceptionMessage src/support/copy.C src/support/copy.cpp NOCLASSES src/support/limited_stack.h src/support/limited_stack.h limited_stack src/support/filefilterlist.C src/support/FileFilterList.cpp ['FileFilterList', 'Filter'] src/support/cow_ptr.h src/support/cow_ptr.h cow_ptr src/support/os_unix.C src/support/os_unix.cpp NOCLASSES src/support/socktools.h src/support/socktools.h NOCLASSES src/support/forkedcontr.h src/support/ForkedcallsController.h ForkedcallsController src/support/os.h src/support/os.h NOCLASSES src/support/FileMonitor.h src/support/FileMonitor.h FileMonitor src/support/copied_ptr.h src/support/copied_ptr.h copied_ptr src/support/translator.h src/support/Translator.h Translator src/support/filetools.C src/support/filetools.cpp NOCLASSES src/support/unlink.C src/support/unlink.cpp NOCLASSES src/support/os_win32.C src/support/os_win32.cpp GetFolderPath src/support/lstrings.C src/support/lstrings.cpp NOCLASSES src/support/qstring_helpers.C src/support/qstring_helpers.cpp NOCLASSES src/support/getcwd.C src/support/getcwd.cpp NOCLASSES src/support/systemcall.C src/support/Systemcall.cpp Systemcall src/support/lyxalgo.h src/support/lyxalgo.h NOCLASSES src/support/filefilterlist.h src/support/FileFilterList.h ['FileFilterList', 'Filter'] src/support/unicode.C src/support/unicode.cpp IconvProcessor src/support/userinfo.C src/support/userinfo.cpp NOCLASSES src/support/lyxtime.C src/support/lyxtime.cpp NOCLASSES src/support/kill.C src/support/kill.cpp NOCLASSES src/support/docstring.C src/support/docstring.cpp to_local8bit_failure src/support/os_cygwin.C src/support/os_cygwin.cpp NOCLASSES src/support/lyxsum.C src/support/lyxsum.cpp NOCLASSES src/support/environment.C src/support/environment.cpp NOCLASSES src/support/filetools.h src/support/filetools.h NOCLASSES src/support/textutils.C src/support/textutils.cpp NOCLASSES src/support/mkdir.C src/support/mkdir.cpp NOCLASSES src/support/forkedcall.C src/support/Forkedcall.cpp ['ForkedProcess', 'Forkedcall'] src/support/tempname.C src/support/tempname.cpp NOCLASSES src/support/os_win32.h src/support/os_win32.h GetFolderPath src/support/types.h src/support/types.h NOCLASSES src/support/lstrings.h src/support/lstrings.h NOCLASSES src/support/forkedcallqueue.C src/support/ForkedCallQueue.cpp ForkedCallQueue src/support/qstring_helpers.h src/support/qstring_helpers.h NOCLASSES src/support/convert.C src/support/convert.cpp NOCLASSES src/support/filename.C src/support/FileName.cpp ['FileName', 'DocFileName'] src/support/tests/convert.C src/support/tests/convert.cpp NOCLASSES src/support/tests/filetools.C src/support/tests/filetools.cpp NOCLASSES src/support/tests/lstrings.C src/support/tests/lstrings.cpp NOCLASSES src/support/tests/boost.C src/support/tests/boost.cpp NOCLASSES src/support/docstream.C src/support/docstream.cpp ['iconv_codecvt_facet_exception', 'idocfstream', 'odocfstream'] src/support/std_istream.h src/support/std_istream.h NOCLASSES src/support/systemcall.h src/support/Systemcall.h Systemcall src/support/chdir.C src/support/chdir.cpp NOCLASSES src/support/std_ostream.h src/support/std_ostream.h NOCLASSES src/support/unicode.h src/support/unicode.h IconvProcessor src/support/path.C src/support/Path.cpp Path src/support/fs_extras.C src/support/fs_extras.cpp NOCLASSES src/support/userinfo.h src/support/userinfo.h NOCLASSES src/support/lyxtime.h src/support/lyxtime.h NOCLASSES src/support/docstring.h src/support/docstring.h to_local8bit_failure src/support/debugstream.h src/support/debugstream.h basic_debugstream src/support/environment.h src/support/environment.h NOCLASSES src/support/textutils.h src/support/textutils.h NOCLASSES src/support/forkedcall.h src/support/Forkedcall.h ['ForkedProcess', 'Forkedcall'] src/support/socktools.C src/support/socktools.cpp NOCLASSES src/support/forkedcallqueue.h src/support/ForkedCallQueue.h ForkedCallQueue src/support/forkedcontr.C src/support/ForkedcallsController.cpp ForkedcallsController src/support/os.C src/support/os.cpp NOCLASSES src/support/convert.h src/support/convert.h NOCLASSES src/support/filename.h src/support/FileName.h ['FileName', 'DocFileName'] src/support/docstream.h src/support/docstream.h ['iconv_codecvt_facet_exception', 'idocfstream', 'odocfstream'] src/support/FileMonitor.C src/support/FileMonitor.cpp FileMonitor git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@18024 a592a061-630c-0410-9148-cb99ea01b6c8
2007-04-26 05:12:52 +00:00
#include "support/FileName.h"
#include "support/lstrings.h" // ascii_lowercase
#include <QPainter>
#include <QImageReader>
using namespace std;
using namespace lyx::support;
namespace lyx {
namespace graphics {
/// Implement factory method defined in GraphicsImage.h
Image * newImage()
{
return new GuiImage;
}
GuiImage::GuiImage() : is_transformed_(false)
{}
GuiImage::GuiImage(GuiImage const & other)
: Image(other), original_(other.original_),
transformed_(other.transformed_), is_transformed_(other.is_transformed_),
fname_(other.fname_)
{}
Image * GuiImage::clone() const
{
return new GuiImage(*this);
}
QImage const & GuiImage::image() const
{
return is_transformed_ ? transformed_ : original_;
}
unsigned int GuiImage::width() const
{
return is_transformed_ ? transformed_.width() : original_.width();
}
unsigned int GuiImage::height() const
{
return is_transformed_ ? transformed_.height() : original_.height();
}
bool GuiImage::load(FileName const & filename)
{
if (!original_.isNull()) {
LYXERR(Debug::GRAPHICS, "Image is loaded already!");
return false;
}
fname_ = toqstr(filename.absFilename());
return load();
}
bool GuiImage::load()
{
if (!original_.load(fname_)) {
LYXERR(Debug::GRAPHICS, "Unable to open image");
return false;
}
return true;
}
bool GuiImage::setPixmap(Params const & params)
{
if (!params.display)
return false;
if (original_.isNull()) {
if (!load())
return false;
}
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();
return true;
}
bool GuiImage::clip(Params const & params)
{
if (params.bb.empty())
// No clipping is necessary.
return false;
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 > image.width() || new_height > image.height()) {
// Bounds are invalid.
return false;
}
if (new_width == image.width() && new_height == image.height())
return false;
int const xoffset_l = params.bb.xl;
int const yoffset_t = (image.height() > int(params.bb.yt))
? image.height() - params.bb.yt : 0;
transformed_ = image.copy(xoffset_l, yoffset_t, new_width, new_height);
return true;
}
bool GuiImage::rotate(Params const & params)
{
if (!params.angle)
return false;
QImage const & image = is_transformed_ ? transformed_ : original_;
QMatrix m;
m.rotate(- params.angle);
transformed_ = image.transformed(m);
return true;
}
bool GuiImage::scale(Params const & params)
{
QImage const & image = is_transformed_ ? transformed_ : original_;
if (params.scale == 100)
return false;
qreal scale = qreal(params.scale) / 100.0;
#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(scale, scale);
transformed_ = image.transformed(m);
return true;
}
} // namespace graphics
} // lyx