2006-03-05 17:24:44 +00:00
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/**
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2007-08-31 05:53:55 +00:00
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* \file GuiImage.cpp
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2006-03-05 17:24:44 +00:00
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* This file is part of LyX, the document processor.
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* Licence details can be found in the file COPYING.
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*
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* \author Angus Leeming
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* \author John Levon
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*
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* Full author contact details are available in file CREDITS.
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*/
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#include <config.h>
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2007-08-31 05:53:55 +00:00
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#include "GuiImage.h"
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2006-03-05 17:24:44 +00:00
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#include "qt_helpers.h"
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2007-04-26 04:41:58 +00:00
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#include "Format.h"
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2006-03-05 17:24:44 +00:00
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#include "graphics/GraphicsParams.h"
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2007-11-29 22:48:35 +00:00
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#include "support/debug.h"
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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
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#include "support/FileName.h"
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2007-02-26 18:54:03 +00:00
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#include "support/lstrings.h" // ascii_lowercase
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2006-03-05 17:24:44 +00:00
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#include <QPainter>
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#include <QImage>
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#include <QImageReader>
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2007-12-12 19:28:07 +00:00
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using namespace std;
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using namespace lyx::support;
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2006-03-05 17:24:44 +00:00
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namespace lyx {
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namespace graphics {
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/// Access to this class is through this static method.
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2007-11-22 00:04:19 +00:00
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Image * GuiImage::newImage()
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2006-03-05 17:24:44 +00:00
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{
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2007-11-22 00:04:19 +00:00
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return new GuiImage;
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2006-03-05 17:24:44 +00:00
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}
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2007-08-31 22:16:11 +00:00
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GuiImage::GuiImage(GuiImage const & other)
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2006-03-05 17:24:44 +00:00
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: Image(other), original_(other.original_),
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2008-06-06 22:51:11 +00:00
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transformed_(other.transformed_), is_transformed_(other.is_transformed_)
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2006-03-05 17:24:44 +00:00
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{}
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2007-11-21 22:54:10 +00:00
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Image * GuiImage::clone() const
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2006-03-05 17:24:44 +00:00
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{
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2007-08-31 22:16:11 +00:00
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return new GuiImage(*this);
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2006-03-05 17:24:44 +00:00
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}
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2007-11-23 22:15:17 +00:00
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unsigned int GuiImage::width() const
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2006-03-05 17:24:44 +00:00
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{
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2008-06-06 22:51:11 +00:00
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return is_transformed_ ? transformed_.width() : original_.width();
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2006-03-05 17:24:44 +00:00
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}
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2007-11-23 22:15:17 +00:00
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unsigned int GuiImage::height() const
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2006-03-05 17:24:44 +00:00
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{
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2008-06-06 22:51:11 +00:00
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return is_transformed_ ? transformed_.height() : original_.height();
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2006-03-05 17:24:44 +00:00
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}
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2008-06-06 11:52:02 +00:00
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bool GuiImage::load(FileName const & filename)
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2006-03-05 17:24:44 +00:00
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{
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if (!original_.isNull()) {
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2007-11-15 20:04:51 +00:00
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LYXERR(Debug::GRAPHICS, "Image is loaded already!");
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2008-06-06 11:52:02 +00:00
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return false;
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2006-03-05 17:24:44 +00:00
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}
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2006-11-26 21:30:39 +00:00
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if (!original_.load(toqstr(filename.absFilename()))) {
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2007-11-15 20:04:51 +00:00
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LYXERR(Debug::GRAPHICS, "Unable to open image");
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2008-06-06 11:52:02 +00:00
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return false;
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2006-03-05 17:24:44 +00:00
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}
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2008-06-06 11:52:02 +00:00
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return true;
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2006-03-05 17:24:44 +00:00
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}
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// This code is taken from KImageEffect::toGray
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2008-06-06 22:51:11 +00:00
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static QPixmap toGray(QPixmap const & pix)
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2006-03-05 17:24:44 +00:00
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{
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2008-06-06 22:51:11 +00:00
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if (pix.width() == 0 || pix.height() == 0)
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return pix;
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2006-03-05 17:24:44 +00:00
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2008-06-06 22:51:11 +00:00
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QImage img = pix.toImage();
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2006-03-05 17:24:44 +00:00
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int const pixels = img.depth() > 8 ?
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img.width() * img.height() : img.numColors();
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2007-05-28 22:27:45 +00:00
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unsigned int *data = img.depth() > 8 ?
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2006-08-25 10:52:49 +00:00
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reinterpret_cast<unsigned int *>(img.bits()) :
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reinterpret_cast<unsigned int *>(&img.colorTable()[0]);
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2006-03-05 17:24:44 +00:00
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for(int i = 0; i < pixels; ++i){
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int const val = qGray(data[i]);
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data[i] = qRgba(val, val, val, qAlpha(data[i]));
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}
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2008-06-06 22:51:11 +00:00
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return QPixmap::fromImage(img);
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2006-03-05 17:24:44 +00:00
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}
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2007-11-21 22:54:10 +00:00
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bool GuiImage::setPixmap(Params const & params)
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2006-03-05 17:24:44 +00:00
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{
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if (original_.isNull() || params.display == NoDisplay)
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return false;
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2008-06-06 22:51:11 +00:00
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is_transformed_ = clip(params);
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is_transformed_ |= rotate(params);
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is_transformed_ |= scale(params);
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2006-03-05 17:24:44 +00:00
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switch (params.display) {
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case GrayscaleDisplay: {
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2008-06-06 22:51:11 +00:00
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transformed_ = is_transformed_
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? toGray(transformed_) : toGray(original_);
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is_transformed_ = true;
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2006-03-05 17:24:44 +00:00
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break;
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}
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case MonochromeDisplay: {
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2008-06-06 22:51:11 +00:00
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QImage img = is_transformed_
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? transformed_.toImage() : original_.toImage();
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img.convertToFormat(img.format(), Qt::MonoOnly);
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transformed_ = QPixmap::fromImage(img);
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is_transformed_ = true;
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2006-03-05 17:24:44 +00:00
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break;
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}
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default:
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break;
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}
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2008-06-06 22:51:11 +00:00
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if (!is_transformed_)
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// Clear it out to save some memory.
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transformed_ = QPixmap();
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2006-03-05 17:24:44 +00:00
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return true;
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}
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2008-06-06 22:51:11 +00:00
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bool GuiImage::clip(Params const & params)
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2006-03-05 17:24:44 +00:00
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{
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if (params.bb.empty())
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// No clipping is necessary.
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2008-06-06 22:51:11 +00:00
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return false;
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2006-03-05 17:24:44 +00:00
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int const new_width = params.bb.xr - params.bb.xl;
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int const new_height = params.bb.yt - params.bb.yb;
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// No need to check if the width, height are > 0 because the
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// Bounding Box would be empty() in this case.
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if (new_width > original_.width() || new_height > original_.height()) {
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// Bounds are invalid.
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2008-06-06 22:51:11 +00:00
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return false;
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2006-03-05 17:24:44 +00:00
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}
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if (new_width == original_.width() && new_height == original_.height())
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2008-06-06 22:51:11 +00:00
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return false;
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2006-03-05 17:24:44 +00:00
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int const xoffset_l = params.bb.xl;
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int const yoffset_t = (original_.height() > int(params.bb.yt) ?
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original_.height() - params.bb.yt : 0);
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transformed_ = original_.copy(xoffset_l, yoffset_t,
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new_width, new_height);
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2008-06-06 22:51:11 +00:00
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return true;
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2006-03-05 17:24:44 +00:00
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}
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2008-06-06 22:51:11 +00:00
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bool GuiImage::rotate(Params const & params)
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2006-03-05 17:24:44 +00:00
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{
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if (!params.angle)
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2008-06-06 22:51:11 +00:00
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return false;
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if (!is_transformed_)
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transformed_ = original_;
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2006-03-05 17:24:44 +00:00
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QMatrix m;
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m.rotate(-params.angle);
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2006-08-17 10:49:25 +00:00
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transformed_ = transformed_.transformed(m);
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2008-06-06 22:51:11 +00:00
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return true;
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2006-03-05 17:24:44 +00:00
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}
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2008-06-06 22:51:11 +00:00
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bool GuiImage::scale(Params const & params)
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2006-03-05 17:24:44 +00:00
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{
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2007-11-23 22:15:17 +00:00
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Dimension dim = scaledDimension(params);
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2006-03-05 17:24:44 +00:00
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2007-11-23 22:15:17 +00:00
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if (dim.width() == width() && dim.height() == height())
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2008-06-06 22:51:11 +00:00
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return false;
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if (!is_transformed_)
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transformed_ = original_;
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2006-03-05 17:24:44 +00:00
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QMatrix m;
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2007-11-23 22:15:17 +00:00
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m.scale(double(dim.width()) / width(), double(dim.height()) / height());
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2006-08-17 10:49:25 +00:00
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transformed_ = transformed_.transformed(m);
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2008-06-06 22:51:11 +00:00
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return true;
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2006-03-05 17:24:44 +00:00
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}
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} // namespace graphics
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} // lyx
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