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Forgot to commit these last time; no longer need the basic image loader.
Hurrah! git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@5818 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Angus Leeming
parent
3e8298b9a4
commit
61b80e2821
@ -1,3 +1,9 @@
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2002-12-13 Angus Leeming <leeming@lyx.org>
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* GraphicsImageXPM.[Ch]: removed.
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* Makefile.am: associated change.
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2002-12-01 Lars Gullik Bjønnes <larsbj@gullik.net>
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* several files: ws changes
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@ -1,764 +0,0 @@
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/**
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* \file GraphicsImageXPM.C
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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 Baruch Even
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* \author Angus Leeming
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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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#ifdef __GNUG__
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#pragma implementation
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#endif
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#include "GraphicsImageXPM.h"
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#include "GraphicsParams.h"
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#include "frontends/xforms/ColorHandler.h"
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#include "debug.h"
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#include "support/filetools.h" // IsFileReadable
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#include "support/lstrings.h"
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#include "Lsstream.h"
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#include <boost/tuple/tuple.hpp>
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#include <boost/bind.hpp>
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#include FORMS_H_LOCATION
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#include <iomanip> // std::setfill, etc
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#include <cmath> // cos, sin
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#include <cstdlib> // malloc, free
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#ifndef CXX_GLOBAL_CSTD
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using std::cos;
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using std::sin;
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using std::malloc;
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using std::strcpy;
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using std::strlen;
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#endif
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namespace grfx {
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/// Access to this class is through this static method.
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Image::ImagePtr ImageXPM::newImage()
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{
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ImagePtr ptr;
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ptr.reset(new ImageXPM);
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return ptr;
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}
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/// Return the list of loadable formats.
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Image::FormatList ImageXPM::loadableFormats()
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{
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FormatList formats(1);
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formats[0] = "xpm";
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return formats;
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}
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ImageXPM::ImageXPM()
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: pixmap_(0),
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pixmap_status_(PIXMAP_UNINITIALISED)
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{}
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ImageXPM::ImageXPM(ImageXPM const & other)
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: Image(other),
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image_(other.image_),
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pixmap_(0),
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pixmap_status_(PIXMAP_UNINITIALISED)
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{}
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ImageXPM::~ImageXPM()
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{
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if (pixmap_)
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XFreePixmap(fl_get_display(), pixmap_);
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}
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Image * ImageXPM::clone() const
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{
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return new ImageXPM(*this);
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}
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unsigned int ImageXPM::getWidth() const
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{
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return image_.width();
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}
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unsigned int ImageXPM::getHeight() const
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{
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return image_.height();
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}
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bool ImageXPM::isDrawable() const
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{
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return pixmap_;
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}
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Pixmap ImageXPM::getPixmap() const
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{
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if (!pixmap_status_ == PIXMAP_SUCCESS)
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return 0;
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return pixmap_;
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}
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void ImageXPM::load(string const & filename)
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{
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if (filename.empty()) {
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finishedLoading(false);
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return;
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}
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if (!image_.empty()) {
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lyxerr[Debug::GRAPHICS]
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<< "Image is loaded already!" << std::endl;
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finishedLoading(false);
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return;
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}
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XpmImage * xpm_image = new XpmImage;
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int const success =
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XpmReadFileToXpmImage(const_cast<char *>(filename.c_str()),
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xpm_image, 0);
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switch (success) {
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case XpmOpenFailed:
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lyxerr[Debug::GRAPHICS]
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<< "No XPM image file found." << std::endl;
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break;
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case XpmFileInvalid:
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lyxerr[Debug::GRAPHICS]
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<< "File format is invalid" << std::endl;
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break;
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case XpmNoMemory:
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lyxerr[Debug::GRAPHICS]
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<< "Insufficient memory to read in XPM file"
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<< std::endl;
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break;
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}
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if (success != XpmSuccess) {
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XpmFreeXpmImage(xpm_image);
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delete xpm_image;
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lyxerr[Debug::GRAPHICS]
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<< "Error reading XPM file '"
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<< XpmGetErrorString(success) << '\''
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<< std::endl;
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} else {
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image_.reset(*xpm_image);
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}
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finishedLoading(success == XpmSuccess);
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}
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bool ImageXPM::setPixmap(Params const & params)
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{
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if (image_.empty() || params.display == NoDisplay) {
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return false;
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}
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Display * display = fl_get_display();
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if (pixmap_ && pixmap_status_ == PIXMAP_SUCCESS)
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XFreePixmap(display, pixmap_);
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//(BE 2000-08-05)
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// This might be a dirty thing, but I dont know any other solution.
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Screen * screen = ScreenOfDisplay(display, fl_screen);
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Pixmap pixmap;
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Pixmap mask;
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XpmAttributes attrib;
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// Allow libXPM lots of leeway when trying to allocate colors.
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attrib.closeness = 10000;
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attrib.valuemask = XpmCloseness;
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// The XPM file format allows multiple pixel colours to be defined
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// as c_color, g_color or m_color.
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switch (params.display) {
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case MonochromeDisplay:
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attrib.color_key = XPM_MONO;
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break;
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case GrayscaleDisplay:
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attrib.color_key = XPM_GRAY;
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break;
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case ColorDisplay:
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default: // NoDisplay cannot happen!
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attrib.color_key = XPM_COLOR;
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break;
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}
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attrib.valuemask |= XpmColorKey;
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// Set the color "none" entry to the color of the background.
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XpmColorSymbol xpm_col[2];
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xpm_col[0].name = 0;
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xpm_col[0].value = "none";
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xpm_col[0].pixel = lyxColorHandler->colorPixel(LColor::graphicsbg);
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// some image magick versions use this
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xpm_col[1].name = 0;
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xpm_col[1].value = "opaque";
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xpm_col[1].pixel = lyxColorHandler->colorPixel(LColor::black);
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attrib.numsymbols = 2;
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attrib.colorsymbols = xpm_col;
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attrib.valuemask |= XpmColorSymbols;
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// Load up the pixmap
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XpmImage xpm_image = image_.get();
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int const status =
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XpmCreatePixmapFromXpmImage(display,
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XRootWindowOfScreen(screen),
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&xpm_image,
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&pixmap, &mask, &attrib);
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XpmFreeAttributes(&attrib);
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if (status != XpmSuccess) {
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lyxerr << "Error creating pixmap from xpm_image '"
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<< XpmGetErrorString(status) << '\''
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<< std::endl;
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pixmap_status_ = PIXMAP_FAILED;
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return false;
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}
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pixmap_ = pixmap;
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pixmap_status_ = PIXMAP_SUCCESS;
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return true;
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}
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void ImageXPM::clip(Params const & params)
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{
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if (image_.empty())
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return;
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if (params.bb.empty())
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// No clipping is necessary.
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return;
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typedef unsigned int dimension;
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dimension const new_width = params.bb.xr - params.bb.xl;
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dimension const new_height = params.bb.yt - params.bb.yb;
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if (new_width > image_.width() || new_height > image_.height())
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// Bounds are invalid.
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return;
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if (new_width == image_.width() && new_height == image_.height())
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// Bounds are unchanged.
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return;
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dimension * new_data = image_.initialisedData(new_width, new_height);
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dimension * it = new_data;
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// The image is stored in memory from upper-left to lower-right,
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// so we loop from yt to yb.
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dimension const * old_data = image_.data();
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dimension const * start_row = old_data +
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image_.width() * (image_.height() - params.bb.yt);
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// the Bounding Box dimensions are never less than zero, so we can use
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// "unsigned int row" here
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for (dimension row = params.bb.yb; row < params.bb.yt; ++row) {
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dimension const * begin = start_row + params.bb.xl;
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dimension const * end = start_row + params.bb.xr;
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it = std::copy(begin, end, it);
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start_row += image_.width();
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}
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image_.resetData(new_width, new_height, new_data);
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}
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void ImageXPM::rotate(Params const & params)
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{
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if (image_.empty())
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return ;
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if (!params.angle)
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// No rotation is necessary.
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return;
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// Ascertain the bounding box of the rotated image
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// Rotate about the bottom-left corner
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static double const pi = 3.14159265358979323846;
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// The minus sign is needed to rotate in the same sense as xdvi et al.
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double const angle = -double(params.angle) * pi / 180.0;
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double const cos_a = cos(angle);
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double const sin_a = sin(angle);
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// (0, 0)
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double max_x = 0; double min_x = 0;
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double max_y = 0; double min_y = 0;
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// (old_xpm->width, 0)
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double x_rot = cos_a * image_.width();
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double y_rot = sin_a * image_.width();
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max_x = std::max(max_x, x_rot); min_x = std::min(min_x, x_rot);
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max_y = std::max(max_y, y_rot); min_y = std::min(min_y, y_rot);
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// (image_.width, image_.height)
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x_rot = cos_a * image_.width() - sin_a * image_.height();
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y_rot = sin_a * image_.width() + cos_a * image_.height();
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max_x = std::max(max_x, x_rot); min_x = std::min(min_x, x_rot);
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max_y = std::max(max_y, y_rot); min_y = std::min(min_y, y_rot);
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// (0, image_.height)
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x_rot = - sin_a * image_.height();
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y_rot = cos_a * image_.height();
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max_x = std::max(max_x, x_rot); min_x = std::min(min_x, x_rot);
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max_y = std::max(max_y, y_rot); min_y = std::min(min_y, y_rot);
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typedef unsigned int dimension;
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dimension const new_width = 1 + int(max_x - min_x); // round up!
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dimension const new_height = 1 + int(max_y - min_y);
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dimension * new_data = image_.initialisedData(new_width, new_height);
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dimension const * old_data = image_.data();
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// rotate the data
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for (dimension y_old = 0; y_old < image_.height(); ++y_old) {
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for (dimension x_old = 0; x_old < image_.width(); ++x_old) {
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double const x_pos = cos_a*x_old - sin_a*y_old - min_x;
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double const y_pos = sin_a*x_old + cos_a*y_old - min_y;
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// ensure that there are no rounding errors
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dimension x_new = (x_pos > 0) ? dimension(x_pos) : 0;
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dimension y_new = (y_pos > 0) ? dimension(y_pos) : 0;
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x_new = std::min(new_width - 1, x_new);
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y_new = std::min(new_height - 1, y_new);
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size_t const id_old = x_old + image_.width() * y_old;
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size_t const id_new = x_new + new_width * y_new;
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new_data[id_new] = old_data[id_old];
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}
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}
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image_.resetData(new_width, new_height, new_data);
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}
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void ImageXPM::scale(Params const & params)
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{
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if (image_.empty())
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return;
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typedef unsigned int dimension;
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dimension new_width;
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dimension new_height;
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boost::tie(new_width, new_height) = getScaledDimensions(params);
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if (new_width == getWidth() && new_height == getHeight())
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// No scaling needed
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return;
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dimension * new_data = image_.initialisedData(new_width, new_height);
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dimension const * old_data = image_.data();
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double const x_scale = double(image_.width()) / double(new_width);
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double const y_scale = double(image_.height()) / double(new_height);
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// A very simple scaling routine.
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// Ascertain the old pixel corresponding to the new one.
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// There is no dithering at all here.
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for (dimension x_new = 0; x_new < new_width; ++x_new) {
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dimension x_old = dimension(x_new * x_scale);
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for (dimension y_new = 0; y_new < new_height; ++y_new) {
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dimension y_old = dimension(y_new * y_scale);
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size_t const id_old = x_old + image_.width() * y_old;
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size_t const id_new = x_new + new_width * y_new;
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new_data[id_new] = old_data[id_old];
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}
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}
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image_.resetData(new_width, new_height, new_data);
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}
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} // namespace grfx
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namespace {
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void free_color_table(XpmColor * colorTable, size_t size);
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void copy_color_table(XpmColor const * in, size_t size, XpmColor * out);
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bool contains_color_none(XpmImage const & image);
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string const unique_color_string(XpmImage const & image);
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// libXpm cannot cope with strings of the form #rrrrggggbbbb,
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// #rrrgggbbb or #rgb, so convert them to #rrggbb.
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string const convertTo7chars(string const &);
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// create a copy (using malloc and strcpy). If (!in) return 0;
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char * clone_c_string(char const * in);
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// Given a string of the form #ff0571 create appropriate grayscale and
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// monochrome colors.
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void mapcolor(char const * c_color, char ** g_color_ptr, char ** m_color_ptr);
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} // namespace anon
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namespace grfx {
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ImageXPM::Data::Data()
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: width_(0), height_(0), cpp_(0), ncolors_(0)
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{}
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ImageXPM::Data::~Data()
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{
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}
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void ImageXPM::Data::reset(XpmImage & image)
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{
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width_ = image.width;
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height_ = image.height;
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cpp_ = image.cpp;
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// Move the data ptr into this store and free up image.data
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data_.reset(image.data, free);
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image.data = 0;
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// Don't just store the color table, but check first that it contains
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// all that we require of it.
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// The idea is to store the color table in a shared_ptr and for all
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// modified images to use the same table.
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// It must, therefore, have a c_color "none" entry and g_color and
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// m_color entries corresponding to each and every c_color entry
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// (except "none"!)
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// 1. Create a copy of the color table.
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// Add a c_color "none" entry to the table if it isn't already there.
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bool const add_color = !contains_color_none(image);
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if (add_color) {
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ncolors_ = 1 + image.ncolors;
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size_t const mem_size = sizeof(XpmColor) * ncolors_;
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XpmColor * table = static_cast<XpmColor *>(malloc(mem_size));
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copy_color_table(image.colorTable, image.ncolors, table);
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XpmColor & color = table[ncolors_ - 1];
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color.symbolic = 0;
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color.m_color = 0;
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color.g_color = 0;
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color.g4_color = 0;
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color.string =
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clone_c_string(unique_color_string(image).c_str());
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color.c_color = clone_c_string("none");
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free_color_table(image.colorTable, image.ncolors);
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colorTable_.reset(table, boost::bind(free_color_table, _1, ncolors_));
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} else {
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// Just move the pointer across
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ncolors_ = image.ncolors;
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colorTable_.reset(image.colorTable,
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boost::bind(free_color_table, _1, ncolors_));
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image.colorTable = 0;
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}
|
||||
|
||||
// Clean-up the remaining entries of image.
|
||||
image.width = 0;
|
||||
image.height = 0;
|
||||
image.cpp = 0;
|
||||
image.ncolors = 0;
|
||||
|
||||
// 2. Ensure that the color table has g_color and m_color entries
|
||||
XpmColor * table = colorTable_.get();
|
||||
|
||||
for (size_t i = 0; i < ncolors_; ++i) {
|
||||
XpmColor & entry = table[i];
|
||||
if (!entry.c_color)
|
||||
continue;
|
||||
|
||||
// libXpm cannot cope with strings of the form #rrrrggggbbbb,
|
||||
// #rrrgggbbb or #rgb, so convert them to #rrggbb.
|
||||
string c_color = entry.c_color;
|
||||
if (c_color[0] == '#' && c_color.size() != 7) {
|
||||
c_color = convertTo7chars(c_color);
|
||||
free(entry.c_color);
|
||||
entry.c_color = clone_c_string(c_color.c_str());
|
||||
}
|
||||
|
||||
// If the c_color is defined and the equivalent
|
||||
// grayscale or monochrome ones are not, then define them.
|
||||
mapcolor(entry.c_color, &entry.g_color, &entry.m_color);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
XpmImage ImageXPM::Data::get() const
|
||||
{
|
||||
XpmImage image;
|
||||
image.width = width_;
|
||||
image.height = height_;
|
||||
image.cpp = cpp_;
|
||||
image.ncolors = ncolors_;
|
||||
image.data = data_.get();
|
||||
image.colorTable = colorTable_.get();
|
||||
return image;
|
||||
}
|
||||
|
||||
|
||||
void ImageXPM::Data::resetData(int w, int h, unsigned int * d)
|
||||
{
|
||||
width_ = w;
|
||||
height_ = h;
|
||||
data_.reset(d, free);
|
||||
}
|
||||
|
||||
|
||||
unsigned int * ImageXPM::Data::initialisedData(int w, int h) const
|
||||
{
|
||||
size_t const data_size = w * h;
|
||||
|
||||
size_t const mem_size = sizeof(unsigned int) * data_size;
|
||||
unsigned int * ptr = static_cast<unsigned int *>(malloc(mem_size));
|
||||
|
||||
unsigned int none_id = color_none_id();
|
||||
std::fill(ptr, ptr + data_size, none_id);
|
||||
|
||||
return ptr;
|
||||
}
|
||||
|
||||
|
||||
unsigned int ImageXPM::Data::color_none_id() const
|
||||
{
|
||||
XpmColor * table = colorTable_.get();
|
||||
for (size_t i = 0; i < ncolors_; ++i) {
|
||||
char const * const color = table[i].c_color;
|
||||
if (color && ascii_lowercase(color) == "none")
|
||||
return static_cast<unsigned int>(i);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
} // namespace grfx
|
||||
|
||||
namespace {
|
||||
|
||||
// libXpm cannot cope with strings of the form #rrrrggggbbbb,
|
||||
// #rrrgggbbb or #rgb, so convert them to #rrggbb.
|
||||
string const convertTo7chars(string const & input)
|
||||
{
|
||||
string::size_type size = input.size();
|
||||
if (size != 13 && size != 10 && size != 9 && size != 4)
|
||||
// Can't deal with it.
|
||||
return input;
|
||||
|
||||
if (input[0] != '#')
|
||||
// Can't deal with it.
|
||||
return input;
|
||||
|
||||
string format(input);
|
||||
|
||||
switch (size) {
|
||||
case 13: // #rrrrggggbbbb
|
||||
format.erase(3, 2);
|
||||
format.erase(5, 2);
|
||||
format.erase(7, 2);
|
||||
break;
|
||||
case 10: // #rrrgggbbb
|
||||
format.erase(3, 1);
|
||||
format.erase(5, 1);
|
||||
format.erase(7, 1);
|
||||
break;
|
||||
case 9: //
|
||||
format.erase(7);
|
||||
break;
|
||||
case 4: // #rgb
|
||||
format.insert(2, 1, '0');
|
||||
format.insert(4, 1, '0');
|
||||
format.append(1, '0');
|
||||
break;
|
||||
}
|
||||
|
||||
return format;
|
||||
}
|
||||
|
||||
|
||||
// Given a string of the form #ff0571 create appropriate grayscale and
|
||||
// monochrome colors.
|
||||
void mapcolor(char const * c_color, char ** g_color_ptr, char ** m_color_ptr)
|
||||
{
|
||||
if (!c_color)
|
||||
return;
|
||||
|
||||
char * g_color = *g_color_ptr;
|
||||
char * m_color = *m_color_ptr;
|
||||
|
||||
if (g_color && m_color)
|
||||
// Already filled.
|
||||
return;
|
||||
|
||||
Display * display = fl_get_display();
|
||||
Colormap cmap = fl_state[fl_get_vclass()].colormap;
|
||||
XColor xcol;
|
||||
XColor ccol;
|
||||
if (XLookupColor(display, cmap, c_color, &xcol, &ccol) == 0)
|
||||
// Unable to parse c_color.
|
||||
return;
|
||||
|
||||
// Note that X stores the RGB values in the range 0 - 65535
|
||||
// whilst we require them in the range 0 - 255.
|
||||
int const r = xcol.red / 256;
|
||||
int const g = xcol.green / 256;
|
||||
int const b = xcol.blue / 256;
|
||||
|
||||
// This gives a good match to a human's RGB to luminance conversion.
|
||||
// (From xv's Postscript code --- Mike Ressler.)
|
||||
int const gray = int((0.32 * r) + (0.5 * g) + (0.18 * b));
|
||||
|
||||
ostringstream gray_stream;
|
||||
gray_stream << '#' << std::setbase(16) << std::setfill('0')
|
||||
<< std::setw(2) << gray
|
||||
<< std::setw(2) << gray
|
||||
<< std::setw(2) << gray;
|
||||
|
||||
int const mono = (gray < 128) ? 0 : 255;
|
||||
ostringstream mono_stream;
|
||||
mono_stream << '#' << std::setbase(16) << std::setfill('0')
|
||||
<< std::setw(2) << mono
|
||||
<< std::setw(2) << mono
|
||||
<< std::setw(2) << mono;
|
||||
|
||||
// This string is going into an XpmImage struct, so create copies that
|
||||
// libXPM can free successfully.
|
||||
if (!g_color)
|
||||
*g_color_ptr = clone_c_string(gray_stream.str().c_str());
|
||||
if (!m_color)
|
||||
*m_color_ptr = clone_c_string(mono_stream.str().c_str());
|
||||
}
|
||||
|
||||
|
||||
void copy_color_table(XpmColor const * in, size_t size, XpmColor * out)
|
||||
{
|
||||
for (size_t i = 0; i < size; ++i) {
|
||||
out[i].string = clone_c_string(in[i].string);
|
||||
out[i].symbolic = clone_c_string(in[i].symbolic);
|
||||
out[i].m_color = clone_c_string(in[i].m_color);
|
||||
out[i].g_color = clone_c_string(in[i].g_color);
|
||||
out[i].g4_color = clone_c_string(in[i].g4_color);
|
||||
out[i].c_color = clone_c_string(in[i].c_color);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void free_color_table(XpmColor * table, size_t size)
|
||||
{
|
||||
for (size_t i = 0; i < size; ++i) {
|
||||
free(table[i].string);
|
||||
free(table[i].symbolic);
|
||||
free(table[i].m_color);
|
||||
free(table[i].g_color);
|
||||
free(table[i].g4_color);
|
||||
free(table[i].c_color);
|
||||
}
|
||||
free(table);
|
||||
}
|
||||
|
||||
|
||||
char * clone_c_string(char const * in)
|
||||
{
|
||||
if (!in)
|
||||
return 0;
|
||||
|
||||
// Don't forget the '\0'
|
||||
char * out = static_cast<char *>(malloc(strlen(in) + 1));
|
||||
return strcpy(out, in);
|
||||
}
|
||||
|
||||
|
||||
bool contains_color_none(XpmImage const & image)
|
||||
{
|
||||
for (size_t i = 0; i < image.ncolors; ++i) {
|
||||
char const * const color = image.colorTable[i].c_color;
|
||||
if (color && ascii_lowercase(color) == "none")
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
|
||||
string const unique_color_string(XpmImage const & image)
|
||||
{
|
||||
string id(image.cpp, ' ');
|
||||
|
||||
for(;;) {
|
||||
bool found_it = false;
|
||||
for (size_t i = 0; i < image.ncolors; ++i) {
|
||||
string const c_id = image.colorTable[i].string;
|
||||
if (c_id == id) {
|
||||
found_it = true;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (!found_it)
|
||||
return id;
|
||||
|
||||
// Loop over the printable characters in the ASCII table.
|
||||
// Ie, count from char 32 (' ') to char 126 ('~')
|
||||
// A base 94 counter!
|
||||
string::size_type current_index = id.size() - 1;
|
||||
bool continue_loop = true;
|
||||
while(continue_loop) {
|
||||
continue_loop = false;
|
||||
|
||||
if (id[current_index] == 126) {
|
||||
continue_loop = true;
|
||||
if (current_index == 0)
|
||||
// Unable to find a unique string
|
||||
return image.colorTable[0].string;
|
||||
|
||||
id[current_index] = 32;
|
||||
current_index -= 1;
|
||||
} else {
|
||||
id[current_index] += 1;
|
||||
// Note that '"' is an illegal char in this
|
||||
// context
|
||||
if (id[current_index] == '"')
|
||||
id[current_index] += 1;
|
||||
}
|
||||
}
|
||||
if (continue_loop)
|
||||
// Unable to find a unique string
|
||||
return string();
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace anon
|
||||
@ -1,161 +0,0 @@
|
||||
// -*- C++ -*-
|
||||
/**
|
||||
* \file GraphicsImageXPM.h
|
||||
* This file is part of LyX, the document processor.
|
||||
* Licence details can be found in the file COPYING.
|
||||
*
|
||||
* \author Baruch Even
|
||||
* \author Angus Leeming
|
||||
*
|
||||
* Full author contact details are available in file CREDITS
|
||||
*
|
||||
* An instantiation of Image that makes use of libXPM to load and store
|
||||
* the image in memory.
|
||||
*/
|
||||
|
||||
#ifndef GRAPHICSIMAGEXPM_H
|
||||
#define GRAPHICSIMAGEXPM_H
|
||||
|
||||
#include "GraphicsImage.h"
|
||||
#include XPM_H_LOCATION
|
||||
|
||||
#include <boost/shared_ptr.hpp>
|
||||
|
||||
#ifdef __GNUG__
|
||||
#pragma interface
|
||||
#endif
|
||||
|
||||
namespace grfx {
|
||||
|
||||
class ImageXPM : public Image
|
||||
{
|
||||
public:
|
||||
/// Access to this class is through this static method.
|
||||
static ImagePtr newImage();
|
||||
|
||||
/// Return the list of loadable formats.
|
||||
static FormatList loadableFormats();
|
||||
|
||||
///
|
||||
~ImageXPM();
|
||||
|
||||
/// Create a copy
|
||||
Image * clone() const;
|
||||
|
||||
///
|
||||
Pixmap getPixmap() const;
|
||||
|
||||
/// Get the image width
|
||||
unsigned int getWidth() const;
|
||||
|
||||
/// Get the image height
|
||||
unsigned int getHeight() const;
|
||||
|
||||
bool isDrawable() const;
|
||||
|
||||
/** Load the image file into memory.
|
||||
* In this case (ImageXPM), the process is blocking.
|
||||
*/
|
||||
void load(string const & filename);
|
||||
|
||||
/** Generate the pixmap, based on the current state of the
|
||||
* xpm_image_ (clipped, rotated, scaled etc).
|
||||
* Uses the params to decide on color, grayscale etc.
|
||||
* Returns true if the pixmap is created.
|
||||
*/
|
||||
bool setPixmap(Params const & params);
|
||||
|
||||
/// Clip the image using params.
|
||||
void clip(Params const & params);
|
||||
|
||||
/// Rotate the image using params.
|
||||
void rotate(Params const & params);
|
||||
|
||||
/// Scale the image using params.
|
||||
void scale(Params const & params);
|
||||
|
||||
private:
|
||||
/// Access to the class is through newImage() and clone.
|
||||
ImageXPM();
|
||||
///
|
||||
ImageXPM(ImageXPM const &);
|
||||
|
||||
/** Contains the data read from file.
|
||||
* This class is a wrapper for a XpmImage struct, but all views
|
||||
* of a single file's data will share the same color table.
|
||||
* This is done by ensuring that the color table contains a "none"
|
||||
* c_color together with g_color and m_color entries for each c_color
|
||||
* entry when it is first stored.
|
||||
*/
|
||||
class Data
|
||||
{
|
||||
public:
|
||||
/// Default c-tor. Initialise everything to zero.
|
||||
Data();
|
||||
~Data();
|
||||
|
||||
bool empty() const { return width_ == 0; }
|
||||
|
||||
/** Wrap an XpmImage in a nice, clean C++ interface.
|
||||
* Empty the original XpmImage.
|
||||
* Does some analysis of the color table to ensure that
|
||||
* it is suitable for all future eventualities. (See above
|
||||
* description.)
|
||||
*/
|
||||
void reset(XpmImage & image);
|
||||
|
||||
/// Reset the data struct with this data.
|
||||
void resetData(int width, int height, unsigned int * data);
|
||||
|
||||
/** Returns a ptr to an initialised block of memory.
|
||||
* the data is initialised to the color "none" entry.
|
||||
*/
|
||||
unsigned int * initialisedData(int width, int height) const;
|
||||
|
||||
/** Construct an XpmImage from the stored contents.
|
||||
* To pass to XpmCreatePixmapFromXpmImage.
|
||||
* Efficient, because we only copy the ptrs to the structs.
|
||||
*/
|
||||
XpmImage get() const;
|
||||
|
||||
unsigned int width() const { return width_; }
|
||||
unsigned int height() const { return height_; }
|
||||
unsigned int cpp() const { return cpp_; }
|
||||
unsigned int ncolors() const { return ncolors_; }
|
||||
unsigned int const * data() const
|
||||
{ return data_.get(); }
|
||||
XpmColor const * colorTable() const
|
||||
{ return colorTable_.get(); }
|
||||
|
||||
private:
|
||||
unsigned int width_;
|
||||
unsigned int height_;
|
||||
unsigned int cpp_;
|
||||
unsigned int ncolors_;
|
||||
boost::shared_ptr<unsigned int> data_;
|
||||
boost::shared_ptr<XpmColor> colorTable_;
|
||||
|
||||
unsigned int color_none_id() const;
|
||||
};
|
||||
|
||||
Data image_;
|
||||
|
||||
/// The pixmap itself.
|
||||
Pixmap pixmap_;
|
||||
|
||||
/// Is the pixmap initialized?
|
||||
enum PixmapStatus {
|
||||
///
|
||||
PIXMAP_UNINITIALISED,
|
||||
///
|
||||
PIXMAP_FAILED,
|
||||
///
|
||||
PIXMAP_SUCCESS
|
||||
};
|
||||
|
||||
PixmapStatus pixmap_status_;
|
||||
};
|
||||
|
||||
} // namespace grfx
|
||||
|
||||
#endif // GRAPHICSIMAGEXPM_H
|
||||
@ -6,10 +6,6 @@ INCLUDES = -I$(srcdir)/.. $(BOOST_INCLUDES)
|
||||
|
||||
EXTRA_DIST = GraphicsImageXPM.C GraphicsImageXPM.h
|
||||
|
||||
if USE_BASIC_IMAGE_LOADER
|
||||
GRAPHICSIMAGEXPM = GraphicsImageXPM.C GraphicsImageXPM.h
|
||||
endif
|
||||
|
||||
libgraphics_la_SOURCES = \
|
||||
GraphicsCache.h \
|
||||
GraphicsCache.C \
|
||||
@ -21,7 +17,7 @@ libgraphics_la_SOURCES = \
|
||||
GraphicsImage.C \
|
||||
GraphicsLoader.h \
|
||||
GraphicsLoader.C \
|
||||
$(GRAPHICSIMAGEXPM) GraphicsParams.C \
|
||||
GraphicsParams.C \
|
||||
GraphicsParams.h \
|
||||
GraphicsSupport.h \
|
||||
GraphicsSupport.C \
|
||||
|
||||
Loading…
Reference in New Issue
Block a user