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|
/*
* A simple image display widget, using Inkscape's own rendering engine
*
* Authors:
* Bob Jamison
* Other dudes from The Inkscape Organization
* Abhishek Sharma
*
* Copyright (C) 2004 The Inkscape Organization
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "imageicon.h"
#include <sys/stat.h>
#include "svg-view-widget.h"
#include "document.h"
#include "inkscape.h"
#include <glibmm/convert.h>
#include <glibmm/fileutils.h>
namespace Inkscape
{
namespace UI
{
namespace Widget
{
typedef enum {
SVG_TYPES,
IMPORT_TYPES,
EXPORT_TYPES
} FileDialogType;
/*#########################################################################
### ImageIcon widget
#########################################################################*/
/**
* Constructor
*/
ImageIcon::ImageIcon()
{
init();
}
/**
* Construct from a file name
*/
ImageIcon::ImageIcon(const Glib::ustring &fileName)
{
init();
showSvgFile(fileName);
}
/**
* Copy Constructor
*/
ImageIcon::ImageIcon(const ImageIcon &other)
: sigc::trackable(), Glib::ObjectBase(), Gtk::VBox()
{
init();
document = other.document;
viewerGtkmm = other.viewerGtkmm;
showingBrokenImage = other.showingBrokenImage;
}
/**
* Destructor
*/
ImageIcon::~ImageIcon()
{
if (document)
document->doUnref();
}
/**
* basic initialization, called by the various constructors
*/
void ImageIcon::init()
{
// \FIXME Why?
if (!Inkscape::Application::exists())
Inkscape::Application::create("", false);
document = NULL;
viewerGtkmm = NULL;
//set_size_request(150,150);
showingBrokenImage = false;
}
bool ImageIcon::showSvgDocument(const SPDocument *docArg)
{
if (document)
document->doUnref();
SPDocument *doc = const_cast<SPDocument *>(docArg);
doc->doRef();
document = doc;
//This should remove it from the box, and free resources
//if (viewerGtkmm)
// viewerGtkmm->destroy();
GtkWidget *viewerGtk = sp_svg_view_widget_new(doc);
viewerGtkmm = Glib::wrap(viewerGtk);
viewerGtkmm->show();
pack_start(*viewerGtkmm, TRUE, TRUE, 0);
//GtkWidget *vbox = GTK_WIDGET(gobj());
//gtk_box_pack_start(GTK_BOX(vbox), viewerGtk, TRUE, TRUE, 0);
return true;
}
bool ImageIcon::showSvgFile(const Glib::ustring &theFileName)
{
Glib::ustring fileName = theFileName;
fileName = Glib::filename_to_utf8(fileName);
SPDocument *doc = SPDocument::createNewDoc (fileName.c_str(), 0);
if (!doc) {
g_warning("SVGView: error loading document '%s'\n", fileName.c_str());
return false;
}
showSvgDocument(doc);
doc->doUnref();
return true;
}
bool ImageIcon::showSvgFromMemory(const char *xmlBuffer)
{
if (!xmlBuffer)
return false;
gint len = (gint)strlen(xmlBuffer);
SPDocument *doc = SPDocument::createNewDocFromMem(xmlBuffer, len, 0);
if (!doc) {
g_warning("SVGView: error loading buffer '%s'\n",xmlBuffer);
return false;
}
showSvgDocument(doc);
doc->doUnref();
return true;
}
bool ImageIcon::showBitmap(const Glib::ustring &theFileName)
{
Glib::ustring fileName = theFileName;
/*#####################################
# LET'S HAVE SOME FUN WITH SVG!
# Instead of just loading an image, why
# don't we make a lovely little svg and
# display it nicely?
#####################################*/
//Arbitrary size of svg doc -- rather 'portrait' shaped
gint previewWidth = 400;
gint previewHeight = 600;
//Get some image info. Smart pointer does not need to be deleted
Glib::RefPtr<Gdk::Pixbuf> img = Gdk::Pixbuf::create_from_file(fileName);
gint imgWidth = img->get_width();
gint imgHeight = img->get_height();
//Find the minimum scale to fit the image inside the preview area
double scaleFactorX = (0.9 *(double)previewWidth) / ((double)imgWidth);
double scaleFactorY = (0.9 *(double)previewHeight) / ((double)imgHeight);
double scaleFactor = scaleFactorX;
if (scaleFactorX > scaleFactorY)
scaleFactor = scaleFactorY;
//Now get the resized values
gint scaledImgWidth = (int) (scaleFactor * (double)imgWidth);
gint scaledImgHeight = (int) (scaleFactor * (double)imgHeight);
//center the image on the area
gint imgX = (previewWidth - scaledImgWidth) / 2;
gint imgY = (previewHeight - scaledImgHeight) / 2;
//wrap a rectangle around the image
gint rectX = imgX-1;
gint rectY = imgY-1;
gint rectWidth = scaledImgWidth +2;
gint rectHeight = scaledImgHeight+2;
//Our template. Modify to taste
gchar const *xformat =
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"
"<svg\n"
"xmlns=\"http://www.w3.org/2000/svg\"\n"
"xmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
"width=\"%d\" height=\"%d\">\n"
"<rect\n"
" style=\"fill:#eeeeee;stroke:none\"\n"
" x=\"-100\" y=\"-100\" width=\"4000\" height=\"4000\"/>\n"
"<image x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\"\n"
"xlink:href=\"%s\"/>\n"
"<rect\n"
" style=\"fill:none;"
" stroke:#000000;stroke-width:1.0;"
" stroke-linejoin:miter;stroke-opacity:1.0000000;"
" stroke-miterlimit:4.0000000;stroke-dasharray:none\"\n"
" x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\"/>\n"
"</svg>\n\n";
//if (!Glib::get_charset()) //If we are not utf8
fileName = Glib::filename_to_utf8(fileName);
//Fill in the template
/* FIXME: Do proper XML quoting for fileName. */
gchar *xmlBuffer = g_strdup_printf(xformat,
previewWidth, previewHeight,
imgX, imgY, scaledImgWidth, scaledImgHeight,
fileName.c_str(),
rectX, rectY, rectWidth, rectHeight);
//g_message("%s\n", xmlBuffer);
//now show it!
showSvgFromMemory(xmlBuffer);
g_free(xmlBuffer);
return true;
}
void ImageIcon::showBrokenImage(const Glib::ustring &errorMessage)
{
//Are we already showing it?
if (showingBrokenImage)
return;
//Our template. Modify to taste
gchar const *xformat =
"<?xml version='1.0' encoding='UTF-8' standalone='no'?>"
"<!-- Created with Inkscape (http://www.inkscape.org/) -->"
"<svg"
" xmlns:xml='http://www.w3.org/XML/1998/namespace'"
" xmlns:svg='http://www.w3.org/2000/svg'"
" xmlns='http://www.w3.org/2000/svg'"
" id='svg2'"
" height='64.000000'"
" width='64.000000'"
" y='0.00000000'"
" x='0.00000000'"
" version='1.0'>"
" <defs"
" id='defs3' />"
" <rect"
" id='rect1723'"
" style='fill:#fefefe;fill-opacity:1.0000000;stroke:#fe0101;stroke-opacity:1.0000000'"
" y='0.74437392'"
" x='0.52374262'"
" height='62.698864'"
" width='62.701584' />"
" <path"
" id='path1725'"
" style='fill:none;fill-opacity:0.75000000;fill-rule:evenodd;stroke:#fe0101;stroke-width:0.99443889px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1.0000000'"
" d='M 0.35436684,0.57368969 L 62.861950,63.081272' />"
" <path"
" id='path1727'"
" style='fill:none;fill-opacity:0.75000000;fill-rule:evenodd;stroke:#fe0101;stroke-width:0.99443889px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1.0000000'"
" d='M 0.53194379,63.258849 L 63.217104,0.92884358' />"
" <path"
" id='text1729'"
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" <text"
" xml:space='preserve'"
" id='text1644'"
" style='font-size:12.000000;font-style:normal;font-weight:normal;fill:#000000;fill-opacity:1.0000000;stroke:none;stroke-width:1.0000000px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1.0000000;font-family:Sans'"
" y='59.288345'"
" x='12.760736'><tspan"
" id='tspan1646'"
" y='59.288345'"
" x='12.760736'>%s</tspan></text>"
"</svg>";
//Fill in the template
char *cErrorMessage = const_cast<char *>(errorMessage.c_str());
gchar *xmlBuffer = g_strdup_printf(xformat, cErrorMessage);
//g_message("%s\n", xmlBuffer);
//now show it!
showSvgFromMemory(xmlBuffer);
g_free(xmlBuffer);
showingBrokenImage = true;
}
static bool
hasSuffix(const Glib::ustring &str, Glib::ustring &ext)
{
int strLen = str.length();
int extLen = ext.length();
if (extLen > strLen)
{
return false;
}
int strpos = strLen-1;
for (int extpos = extLen-1 ; extpos>=0 ; extpos--, strpos--)
{
Glib::ustring::value_type ch = str[strpos];
if (ch != ext[extpos])
{
if ( ((ch & 0xff80) != 0) ||
static_cast<Glib::ustring::value_type>( g_ascii_tolower( static_cast<gchar>(0x07f & ch) ) ) != ext[extpos] )
{
return false;
}
}
}
return true;
}
/**
* Return true if the image is loadable by Gdk, else false
*/
static bool
isValidImageIconFile(const Glib::ustring &fileName)
{
std::vector<Gdk::PixbufFormat>formats = Gdk::Pixbuf::get_formats();
for (unsigned int i=0; i<formats.size(); i++)
{
Gdk::PixbufFormat format = formats[i];
std::vector<Glib::ustring>extensions = format.get_extensions();
for (unsigned int j=0; j<extensions.size(); j++)
{
Glib::ustring ext = extensions[j];
if (hasSuffix(fileName, ext))
{
return true;
}
}
}
return false;
}
/// \fixme This function is almost an exact duplicate of SVGPreview::set() in ui/dialog/filedialogimpl-gtkmm.cpp.
bool ImageIcon::show(const Glib::ustring &fileName)
{
if (!Glib::file_test(fileName, Glib::FILE_TEST_EXISTS)) {
showBrokenImage("File does not exist");
return false;
}
if (Glib::file_test(fileName, Glib::FILE_TEST_IS_REGULAR)) {
gchar *fName = const_cast<gchar *>(fileName.c_str()); // this const-cast seems not necessary, was it put there because of older sys/stat.h version?
struct stat info;
if (stat(fName, &info)) // stat returns 0 upon success
{
showBrokenImage("Cannot get file info");
return false;
}
if (info.st_size > 0x150000L) {
showBrokenImage("File too large");
return false;
}
}
Glib::ustring svg = ".svg";
Glib::ustring svgz = ".svgz";
if (hasSuffix(fileName, svg) || hasSuffix(fileName, svgz)) {
if (!showSvgFile(fileName)) {
showBrokenImage(bitmapError);
return false;
}
return true;
} else if (isValidImageIconFile(fileName)) {
if (!showBitmap(fileName)) {
showBrokenImage(bitmapError);
return false;
}
return true;
} else {
showBrokenImage("unsupported file type");
return false;
}
}
} // namespace Widget
} // namespace UI
} // namespace Inkscape
/*#########################################################################
### E N D O F F I L E
#########################################################################*/
|
