int main(int argc,char **argv)
{
unsigned int window_width=-1, window_height=-1; // sage window size
sage::initUtil();
// parse command line arguments
if (argc < 2){
sage::printLog("PDF> pdfviewer filename [width] [height] [-show_original] [-page num]");
return 0;
}
for (int argNum=2; argNum<argc; argNum++)
{
if (strcmp(argv[argNum], "-show_original") == 0) {
useDXT = false;
}
else if(strcmp(argv[argNum], "-page") == 0) {
int p = atoi(argv[argNum+1]);
if (p != 0)
firstPage = p-1;
argNum++;
}
else if(atoi(argv[argNum]) != 0 && atoi(argv[argNum+1]) != 0) {
window_width = atoi( argv[argNum] );
window_height = atoi( argv[argNum+1] );
argNum++; // increment because we read two args here
}
}
fileName = string(argv[1]);
#if defined(USE_POPPLER)
#if SAGE_POPPLER_VERSION == 5
g_type_init();
sage::printLog("PDF> Poppler version %s", poppler_get_version());
backend = poppler_get_backend ();
enum_value = g_enum_get_value ((GEnumClass *) g_type_class_ref (POPPLER_TYPE_BACKEND), backend);
sage::printLog ("PDF> Backend is %s", enum_value->value_name);
error = NULL;
const string filename = string((const char*)"file://") + string(argv[1]);
document = poppler_document_new_from_file (filename.c_str(), NULL, &error);
if (document == NULL) {
sage::printLog("PDF> error for [%s]: %s", filename.c_str(), error->message);
exit(0);
}
// get the number of pages
numImages = poppler_document_get_n_pages(document);
pg_index = 0; // index starts at 0
page = poppler_document_get_page(document, pg_index);
if (page == NULL) {
sage::printLog("PDF> error for [%s]: %s", filename.c_str());
exit(0);
}
// page size
double mwidth, mheight;
poppler_page_get_size (page, &mwidth, &mheight);
sage::printLog ("PDF> page size: %g by %g ", mwidth, mheight);
x_resolution = 200.0;
pg_w = mwidth * (x_resolution / 72.0);
pg_h = mheight * (x_resolution / 72.0);
if (pg_w > 4096) {
pg_w = 4096.0;
pg_h = 4096.0 / (mwidth/mheight);
x_resolution = pg_w * 72.0 / mwidth;
}
if (pg_h > 4096) {
pg_w = 4096.0 / (mheight/mwidth);
pg_h = 4096.0;
x_resolution = pg_h * 72.0 / mheight;
}
width = (unsigned int)pg_w;
height = (unsigned int)pg_h;
sage::printLog("PDF> Crop @ %d DPI: width %d height %d", int(x_resolution), int(pg_w), int(pg_h));
pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, width, height);
gdk_pixbuf_fill (pixbuf, 0xffffffff);
// print some information
print_document_info (document);
#endif
#if SAGE_POPPLER_VERSION == 12
GooString *fileName;
GooString *ownerPW, *userPW;
Object info;
UnicodeMap *uMap;
// read config file
globalParams = new GlobalParams();
// get mapping to output encoding
if (!(uMap = globalParams->getTextEncoding())) {
sage::printLog("PDF> Couldn't get text encoding");
}
fileName = new GooString(argv[1]);
ownerPW = NULL;
userPW = NULL;
doc = new PDFDoc(fileName, ownerPW, userPW, NULL);
sage::printLog("PDF> file [%s] is OK: %d", argv[1], doc->isOk() );
numImages = doc->getNumPages();
sage::printLog("PDF> num pages: %d", numImages );
SplashColor paperColor;
paperColor[0] = 255;
paperColor[1] = 255;
paperColor[2] = 255;
splashOut = new SplashOutputDev(splashModeRGB8, 3, gFalse, paperColor);
splashOut->startDoc(doc->getXRef());
pg_index = firstPage+1;
double mwidth = doc->getPageMediaWidth(pg_index);
double mheight = doc->getPageMediaHeight(pg_index);
sage::printLog("PDF> Media width %d height %d", int(mwidth), int(mheight));
x_resolution = 200.0;
pg_w = mwidth * (x_resolution / 72.0);
pg_h = mheight * (x_resolution / 72.0);
if (pg_w > 4096) {
pg_w = 4096.0;
pg_h = 4096.0 / (mwidth/mheight);
x_resolution = pg_w * 72.0 / mwidth;
}
if (pg_h > 4096) {
pg_w = 4096.0 / (mheight/mwidth);
pg_h = 4096.0;
x_resolution = pg_h * 72.0 / mheight;
}
width = pg_w;
height = pg_h;
sage::printLog("PDF> Crop @ %d DPI: width %d height %d", int(x_resolution), int(pg_w), int(pg_h));
doc->displayPageSlice(splashOut, 1, x_resolution, x_resolution, 0, gTrue, gFalse, gFalse, 0, 0, pg_w, pg_h);
// print doc info
doc->getDocInfo(&info);
if (info.isDict()) {
printInfoString(info.getDict(), (char*)"Title", (char*)"Title: ", uMap);
printInfoString(info.getDict(), (char*)"Subject", (char*)"Subject: ", uMap);
printInfoString(info.getDict(), (char*)"Keywords", (char*)"Keywords: ", uMap);
printInfoString(info.getDict(), (char*)"Author", (char*)"Author: ", uMap);
printInfoString(info.getDict(), (char*)"Creator", (char*)"Creator: ", uMap);
printInfoString(info.getDict(), (char*)"Producer", (char*)"Producer: ", uMap);
printInfoDate(info.getDict(), (char*)"CreationDate", (char*)"CreationDate: ");
printInfoDate(info.getDict(), (char*)"ModDate", (char*)"ModDate: ");
}
info.free();
#endif
#else
// read file
wand=NewMagickWand();
// set the resolution (pixel density)
MagickSetResolution(wand, 200,200);
status=MagickReadImage(wand, fileName.data());
if (status == MagickFalse)
ThrowWandException(wand);
numImages = MagickGetNumberImages(wand);
MagickSetImageIndex(wand, firstPage);
// get the image size
width = MagickGetImageWidth(wand);
height = MagickGetImageHeight(wand);
// ------- TODO: need to keep track of images that have been flipped already...
// crop the image if necessary to make sure it's a multiple of 4
if (useDXT)
{
if (width%4 != 0 || height%4 != 0)
{
fprintf(stderr, "\n**** Image cropped a few pixels to be a multiple of 4 for dxt");
width -= width%4;
height -= height%4;
}
// flip the image to have the correct orientation for dxt
MagickFlipImage(wand);
}
#endif
// allocate buffers
rgba = (byte*) memalign(16, width*height*4);
if (useDXT)
dxt = (byte*) memalign(16, width*height*4/8);
// get the first page
getRGBA();
// if the user didn't specify the window size, use the image size
if (window_height == -1 && window_width == -1)
{
window_width = width;
window_height = height;
}
// initialize SAIL
// Search for a configuration file
char *tmpconf = getenv("SAGE_APP_CONFIG");
if (tmpconf) {
sage::printLog("PDFViewer> found SAGE_APP_CONFIG variable: [%s]", tmpconf);
scfg.init(tmpconf);
}
else {
sage::printLog("PDFViewer> using default pdfviewer.conf");
scfg.init((char*)"pdfviewer.conf");
}
scfg.setAppName("pdfviewer");
scfg.resX = width;
scfg.resY = height;
// if it hasn't been specified by the config file, use the app-determined size
if (scfg.winWidth == -1 || scfg.winHeight == -1) {
scfg.winWidth = window_width;
scfg.winHeight = window_height;
}
if (useDXT)
{
scfg.pixFmt = PIXFMT_DXT;
scfg.rowOrd = BOTTOM_TO_TOP;
}
else
{
scfg.pixFmt = PIXFMT_888;
scfg.rowOrd = TOP_TO_BOTTOM;
}
sageInf.init(scfg);
// finally swap the first buffer
swapBuffer();
// Wait the end
while (1)
{
usleep(50000); // so that we don't keep spinning too frequently (0.5s)
sageMessage msg;
if (sageInf.checkMsg(msg, false) > 0) {
char *data = (char*) msg.getData();
switch (msg.getCode()) {
case APP_QUIT:
// release the memory
free(dxt);
free(rgba);
#if ! defined(USE_POPPLER)
DestroyMagickWand(wand);
#endif
sageInf.shutdown();
exit(1);
break;
case EVT_CLICK:
// Click event x and y location normalized to size of window
float clickX, clickY;
// Ckick device Id, button Id, and is down flag
int clickDeviceId, clickButtonId, clickIsDown, clickEvent;
// Parse message
sscanf(data,
"%d %f %f %d %d %d",
&clickDeviceId, &clickX, &clickY,
&clickButtonId, &clickIsDown, &clickEvent);
// record the click position so we know how far we moved
if (clickIsDown && clickEvent == EVT_PAN) {
lastX = clickX;
lastY = clickY;
}
if (clickIsDown) {
bool doSwap = false;
#if ! defined(USE_POPPLER)
if (clickButtonId==1)
doSwap = MagickPreviousImage(wand);
else if(clickButtonId==2)
doSwap = MagickNextImage(wand);
#endif
// if everything went well, swap the new page
if (doSwap) {
getRGBA();
swapBuffer();
}
}
break;
case EVT_PAN:
// Pan event properties
int panDeviceId;
bool doSwap = false;
// Pan event x and y location and change in x, y and z direction
// normalized to size of window
float startX, startY, panDX, panDY, panDZ;
sscanf(data,
"%d %f %f %f %f %f",
&panDeviceId, &startX, &startY, &panDX, &panDY, &panDZ);
// keep track of distance
dist += panDX;
// we started a new drag
if (lastX != startX) {
lastX = startX;
dist = 0;
}
// if we dragged more than a certain distance, change a page
else if( fabs(dist) > 0.07 ) {
#if ! defined(USE_POPPLER)
if (dist > 0)
doSwap = MagickPreviousImage(wand);
else
doSwap = MagickNextImage(wand);
#endif
// reset the counter
lastX = startX;
dist = 0;
if (doSwap) {
getRGBA();
swapBuffer();
//sprintf(l, "Page %ld of %d", MagickGetImageIndex(wand)+1, numImages);
}
}
break;
} // end switch
} // end if
} // end while
return 0;
}
