pan & scan in windows ghostpdf

1 files changed, 392 insertions, 256 deletions

diff --git a/apps/windows/win_main.c b/apps/windows/win_main.c
index bdb0bb64..9f106a4a 100644
--- a/apps/windows/win_main.c
+++ b/apps/windows/win_main.c
@@ -4,30 +4,50 @@
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
 #include <commdlg.h>
+#include <shellapi.h>
+
+#define fz_abort(eo) winabort(eo->msg)
+
+void showpage(void);
 
 static HWND hwnd = NULL;
 static HDC hdc;
+static HBRUSH bgbrush;
+static HBRUSH shbrush;
 static BITMAPINFO *dibinf;
-static TCHAR szAppName[] = TEXT("mupdf");
+static TCHAR szAppName[] = TEXT("ghostpdf");
 static HCURSOR arrowcurs, handcurs, waitcurs;
 static LRESULT CALLBACK windproc(HWND, UINT, WPARAM, LPARAM);
+static int winwidth = 0;
+static int winheight = 0;
+
+static int isdown = 0;
+static int oldx = 0, oldy = 0;
+
+
+static int bmpstride = 0;
+static char *bmpdata = NULL;
+
+static int screenwidth = 640;
+static int screenheight = 480;
+static int shrinkwrap = 1;
+static int panx = 0;
+static int pany = 0;
 
+static char *password = "";
+static char *filename = "";
 static char *doctitle = "<untitled>";
 static float zoom = 1.0;
 static int rotate = 0;
 static int pageno = 1;
 static int count = 0;
 
-static char *password = "";
-static char *filename = "";
-
 static pdf_page *page = nil;
 static fz_obj *pageobj = nil;
 
 static int hist[256];
 static int histlen = 0;
 
-/* for 123G commands */
 static unsigned char pagebuf[256];
 static int pagebufidx = 0;
 
@@ -37,7 +57,35 @@ static pdf_outline *outline;
 static fz_renderer *rast;
 static fz_pixmap *image;
 
-#define fz_abort(eo) winabort(eo->msg)
+/*
+ * Dialog boxes
+ */
+
+void winwarn(const char *fmt, ...)
+{
+	char buf[1024];
+	va_list ap;
+	va_start(ap, fmt);
+	vsprintf(buf, fmt, ap);
+	va_end(ap);
+	MessageBoxA(hwnd, buf, "GhostPDF: Warning", MB_ICONWARNING);
+}
+
+void winerror(const char *fmt, ...)
+{
+	char buf[1024];
+	va_list ap;
+	va_start(ap, fmt);
+	vsprintf(buf, fmt, ap);
+	va_end(ap);
+	MessageBoxA(hwnd, buf, "GhostPDF: Error", MB_ICONERROR);
+	exit(1);
+}
+
+void winabort(const char *msg)
+{
+	winerror("There was a problem with file \"%s\":\n\n%s\n", filename, msg);
+}
 
 int getfilename(char *buf, int len)
 {
@@ -103,24 +151,24 @@ char *getpassword(void)
 
 void help()
 {
-	char *msg = \
-		"ghostpdf [-b] [-pzr page/zoom/rotate] [-u password] file.pdf\n\n"
-		/*"key commands:\n" */
-		"    h\tdisplay this help\n"
-		"    <\trotate left\n"
-		"    >\trotate right\n"
-		"    +\tzoom in\n"
-		"    -\tzoom out\n"
-		"    b\tgo back one page\n"
-		"    B\tgo back ten pages\n"
-		"    f\tgo forward one page\n"
-		"    F\tgo forward ten pages\n"
-		"    G\tgo to last page\n"
-		"    m\tmark page for pop-back\n"
-		"    t\tpop back to last mark\n"
-		"    123g\tgo to page 123\n"
-		"\nGhostPDF is Copyright (C) 2005 artofcode LLC\n"
-		;
+	char msg[1024];
+	sprintf(msg,
+		"GhostPDF v%0.2f -- %s\n\n"
+		"    h\t-- display this help\n"
+		"    <\t-- rotate left\n"
+		"    >\t-- rotate right\n"
+		"    +\t-- zoom in\n"
+		"    -\t-- zoom out\n"
+		"    w\t-- shrinkwrap window\n"
+		"    b\t-- go back one page\n"
+		"    B\t-- go back ten pages\n"
+		"    f\t-- go forward one page\n"
+		"    F\t-- go forward ten pages\n"
+		"    G\t-- go to last page\n"
+		"    m\t-- mark page\n"
+		"    t\t-- pop back to last marked page\n"
+		"    123g\t-- go to page 123\n",
+		PDF_VERSION / 100.0, PDF_COPYRIGHT);
 	MessageBoxA(hwnd, msg, "GhostPDF: Usage", MB_ICONINFORMATION);
 }
 
@@ -130,35 +178,14 @@ void usage()
 	exit(1);
 }
 
-void winwarn(const char *fmt, ...)
-{
-	char buf[1024];
-	va_list ap;
-	va_start(ap, fmt);
-	vsprintf(buf, fmt, ap);
-	va_end(ap);
-	MessageBoxA(hwnd, buf, "GhostPDF: Warning", MB_ICONWARNING);
-}
-
-void winerror(const char *fmt, ...)
-{
-	char buf[1024];
-	va_list ap;
-	va_start(ap, fmt);
-	vsprintf(buf, fmt, ap);
-	va_end(ap);
-	MessageBoxA(hwnd, buf, "GhostPDF: Error", MB_ICONERROR);
-	exit(1);
-}
-
-void winabort(const char *msg)
-{
-	winerror("There was a problem with file \"%s\":\n\n%s\n", filename, msg);
-}
+/*
+ * Main window
+ */
 
 void winopen()
 {
 	WNDCLASS wc;
+	RECT r;
 
 	/* Create and register window class */
 	wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
@@ -173,11 +200,20 @@ void winopen()
 	wc.lpszClassName = szAppName;
 	assert(RegisterClass(&wc) && "Register window class");
 
+	/* Get screen size */
+	SystemParametersInfo(SPI_GETWORKAREA, 0, &r, 0);
+	screenwidth = r.right - r.left;
+	screenheight = r.bottom - r.top;
+
 	/* Create cursors */
 	arrowcurs = LoadCursor(NULL, IDC_ARROW);
 	handcurs = LoadCursor(NULL, IDC_HAND);
 	waitcurs = LoadCursor(NULL, IDC_WAIT);
 
+	/* And a background color */
+	bgbrush = CreateSolidBrush(RGB(0x70,0x70,0x70));
+	shbrush = CreateSolidBrush(RGB(0x40,0x40,0x40));
+
 	/* Init DIB info for buffer */
 	dibinf = malloc(sizeof(BITMAPINFO) + 12);
 	assert(dibinf != NULL);
@@ -194,10 +230,9 @@ void winopen()
 	/* Create window */
 	hwnd = CreateWindow(szAppName, // window class name
 						NULL, // window caption
-						//WS_OVERLAPPEDWINDOW, // window style
-						WS_CAPTION|WS_THICKFRAME|WS_SYSMENU|WS_MINIMIZEBOX,
-						CW_USEDEFAULT, // initial x position
-						5, // CW_USEDEFAULT, // initial y position
+						WS_OVERLAPPEDWINDOW,
+						5, //CW_USEDEFAULT, // initial x position
+						5, //CW_USEDEFAULT, // initial y position
 						300, // initial x size
 						300, // initial y size
 						NULL, // parent window handle
@@ -212,23 +247,22 @@ void winopen()
 	SetCursor(arrowcurs);
 }
 
-void winblit()
+void winconvertimage()
 {
-	/* TODO: repack image in windows format */
-	int stride = ((image->w * 3 + 3) / 4) * 4;
-	char *buf;
-	char *s;
-	char *p;
 	int y, x;
 
-	buf = fz_malloc(image->h * stride);
-	if (!buf)
+	if (bmpdata)
+		fz_free(bmpdata);
+
+	bmpstride = ((image->w * 3 + 3) / 4) * 4;
+	bmpdata = fz_malloc(image->h * bmpstride);
+	if (!bmpdata)
 		return;
 
 	for (y = 0; y < image->h; y++)
 	{
-		p = buf + y * stride;
-		s = image->samples + y * image->w * 4;
+		char *p = bmpdata + y * bmpstride;
+		char *s = image->samples + y * image->w * 4;
 		for (x = 0; x < image->w; x++)
 		{
 			p[x * 3 + 0] = s[x * 4 + 3];
@@ -236,31 +270,67 @@ void winblit()
 			p[x * 3 + 2] = s[x * 4 + 1];
 		}
 	}
+}
+
+void winblit()
+{
+	int x0 = panx;
+	int y0 = pany;
+	int x1 = panx + image->w;
+	int y1 = pany + image->h;
+	RECT r;
 
-	dibinf->bmiHeader.biWidth = image->w;
-	dibinf->bmiHeader.biHeight = -image->h;
-	dibinf->bmiHeader.biSizeImage = image->h * stride;
-
-	assert(hdc != NULL);
-	SetDIBitsToDevice(hdc,
-					  0, /* destx */
-					  0, /* desty */
-					  image->w, /* destw */
-					  image->h, /* desth */
-					  0, /* srcx */
-					  0, /* srcy */
-					  0, /* startscan */
-					  image->h, /* numscans */
-					  buf, /* pBits */
-					  dibinf, /* pInfo */
-					  DIB_RGB_COLORS /* color use flag */
-					 );
-
-	fz_free(buf);
+	if (bmpdata)
+	{
+		dibinf->bmiHeader.biWidth = image->w;
+		dibinf->bmiHeader.biHeight = -image->h;
+		dibinf->bmiHeader.biSizeImage = image->h * bmpstride;
+		SetDIBitsToDevice(hdc,
+				panx, /* destx */
+				pany, /* desty */
+				image->w, /* destw */
+				image->h, /* desth */
+				0, /* srcx */
+				0, /* srcy */
+				0, /* startscan */
+				image->h, /* numscans */
+				bmpdata, /* pBits */
+				dibinf, /* pInfo */
+				DIB_RGB_COLORS /* color use flag */
+				);
+	}
+
+	
+	r.top = 0; r.bottom = winheight;
+	r.left = 0; r.right = x0;
+	FillRect(hdc, &r, bgbrush);
+	r.left = x1; r.right = winwidth;
+	FillRect(hdc, &r, bgbrush);
+
+	r.left = 0; r.right = winwidth;
+	r.top = 0; r.bottom = y0;
+	FillRect(hdc, &r, bgbrush);
+	r.top = y1; r.bottom = winheight;
+	FillRect(hdc, &r, bgbrush);
+
+	r.left = x0 + 2;
+	r.right = x1 + 2;
+	r.top = y1;
+	r.bottom = y1 + 2;
+	FillRect(hdc, &r, shbrush);
+	r.left = x1;
+	r.right = x1 + 2;
+	r.top = y0 + 2;
+	r.bottom = y1;
+	FillRect(hdc, &r, shbrush);
 }
 
 void winresize(int w, int h)
 {
+	if (w > screenwidth * 95 / 100)
+		w = screenwidth * 95 / 100;
+	if (h > screenheight * 95 / 100)
+		h = screenheight * 95 / 100;
 	ShowWindow(hwnd, SW_SHOWDEFAULT);
 	w += GetSystemMetrics(SM_CXFRAME) * 2;
 	h += GetSystemMetrics(SM_CYFRAME) * 2;
@@ -270,8 +340,7 @@ void winresize(int w, int h)
 
 void winrepaint(void)
 {
-	RECT wr = (RECT){0, 0, image->w, image->h};
-	InvalidateRect(hwnd, &wr, 0);
+	InvalidateRect(hwnd, NULL, 0);
 }
 
 void dragndrop()
@@ -280,176 +349,35 @@ void dragndrop()
 	ReleaseCapture();
 }
 
-static void showpage(void)
-{
-	fz_error *error;
-	fz_matrix ctm;
-	fz_rect bbox;
-	fz_obj *obj;
-
-	assert(pageno > 0 && pageno <= pdf_getpagecount(pages));
-
-	SetCursor(waitcurs);
-
-	if (image)
-		fz_droppixmap(image);
-	image = nil;
-
-	obj = pdf_getpageobject(pages, pageno - 1);
-	if (obj == pageobj)
-		goto Lskipload;
-	pageobj = obj;
-
-	if (page)
-		pdf_droppage(page);
-
-	error = pdf_loadpage(&page, xref, pageobj);
-	if (error)
-		fz_abort(error);
-
-Lskipload:
-
-	ctm = fz_identity();
-	ctm = fz_concat(ctm, fz_translate(0, -page->mediabox.max.y));
-	ctm = fz_concat(ctm, fz_scale(zoom, -zoom));
-	ctm = fz_concat(ctm, fz_rotate(rotate + page->rotate));
-
-	bbox = fz_transformaabb(ctm, page->mediabox);
-
-	error = fz_rendertree(&image, rast, page->tree, ctm, fz_roundrect(bbox), 1);
-	if (error)
-		fz_abort(error);
-
-	SetCursor(arrowcurs);
-	{
-		char buf[512];
-		sprintf(buf, "%s - %d/%d", doctitle, pageno, count);
-		SetWindowTextA(hwnd, buf);
-	}
-
-	winresize(image->w, image->h);
-	winrepaint();
-}
-
-static void pdfopen(void)
-{
-	fz_error *error;
-	fz_obj *obj;
-
-	error = pdf_newxref(&xref);
-	if (error)
-		fz_abort(error);
-
-	error = pdf_loadxref(xref, filename);
-	if (error)
-	{
-		if (!strncmp(error->msg, "ioerror", 7))
-			fz_abort(error);
-		winwarn(
-			"There was a problem with file \"%s\".\n"
-			"It may be corrupted, or generated by broken software.\n\n"
-			"%s\n\nTrying to continue anyway...",
-				filename, error->msg);
-		error = pdf_repairxref(xref, filename);
-		if (error)
-			fz_abort(error);
-	}
-
-	error = pdf_decryptxref(xref);
-	if (error)
-		fz_abort(error);
-
-	if (xref->crypt)
-	{
-		error = pdf_setpassword(xref->crypt, password);
-		while (error)
-		{
-			fz_droperror(error);
-			password = getpassword();
-			if (!password)
-				exit(1);
-			error = pdf_setpassword(xref->crypt, password);
-			if (error)
-				winwarn("Invalid password.");
-		}
-	}
-
-	obj = fz_dictgets(xref->trailer, "Root");
-	if (!obj)
-		fz_abort(fz_throw("syntaxerror: missing Root object"));
-	error = pdf_loadindirect(&xref->root, xref, obj);
-	if (error) fz_abort(error);
-
-	obj = fz_dictgets(xref->trailer, "Info");
-	if (obj)
-	{
-		error = pdf_loadindirect(&xref->info, xref, obj);
-		if (error) fz_abort(error);
-	}
-
-	error = pdf_loadnametrees(xref);
-	if (error) fz_abort(error);
-
-	error = pdf_loadoutline(&outline, xref);
-	if (error) fz_abort(error);
-
-	doctitle = filename;
-	if (strrchr(doctitle, '\\')) doctitle = strrchr(doctitle, '\\') + 1;
-	if (strrchr(doctitle, '/')) doctitle = strrchr(doctitle, '/') + 1;
-	if (xref->info)
-	{
-		obj = fz_dictgets(xref->info, "Title");
-		if (obj)
-		{
-			error = pdf_toutf8(&doctitle, obj);
-			if (error) fz_abort(error);
-		}
-	}
-
-//	if (outline)
-//		pdf_debugoutline(outline, 0);
-
-	error = pdf_loadpagetree(&pages, xref);
-	if (error) fz_abort(error);
-
-	count = pdf_getpagecount(pages);
-
-	error = fz_newrenderer(&rast, pdf_devicergb, 0, 1024 * 512);
-	if (error) fz_abort(error);
+/*
+ * Event handling
+ */
 
-	image = nil;
-}
-
-static void dumptext()
+void dumptext()
 {
 	fz_error *error;
 	pdf_textline *line;
-
 	error = pdf_loadtextfromtree(&line, page->tree);
 	if (error)
 		fz_abort(error);
-
 	pdf_debugtextline(line);
-
 	pdf_droptextline(line);
 }
 
-static void gotouri(fz_obj *uri)
+void gotouri(fz_obj *uri)
 {
+	STARTUPINFO si;
+	PROCESS_INFORMATION pi;
 	char cmd[2048];
 	char buf[2048];
 
 	memcpy(buf, fz_tostrbuf(uri), fz_tostrlen(uri));
 	buf[fz_tostrlen(uri)] = 0;
 
-	if (getenv("BROWSER"))
-		sprintf(cmd, "$BROWSER %s &", buf);
-	else
-		sprintf(cmd, "start %s", buf);
-	system(cmd);
+	ShellExecute(hwnd, "open", buf, 0, 0, SW_SHOWNORMAL);
 }
 
-static void gotopage(fz_obj *obj)
+void gotopage(fz_obj *obj)
 {
 	int oid = fz_tonum(obj);
 	int i;
@@ -471,7 +399,7 @@ static void gotopage(fz_obj *obj)
 	}
 }
 
-static void handlekey(int c)
+void handlekey(int c)
 {
 	int oldpage = pageno;
 	float oldzoom = zoom;
@@ -553,6 +481,13 @@ static void handlekey(int c)
 	case '>':
 		rotate += 90;
 		break;
+
+	case 'w':
+		shrinkwrap = 1;
+		panx = pany = 0;
+		winresize(image->w, image->h);
+		break;
+
 	case VK_ESCAPE:
 	case 'q':
 		exit(0);
@@ -582,14 +517,14 @@ static void handlekey(int c)
 		showpage();
 }
 
-static void handlemouse(int x, int y, int btn)
+void handlemouse(int x, int y, int btn, int state)
 {
 	pdf_link *link;
 	fz_matrix ctm;
 	fz_point p;
 
-	p.x = x + image->x;
-	p.y = y + image->y;
+	p.x = x - panx + image->x;
+	p.y = y - pany + image->y;
 
 	ctm = fz_identity();
 	ctm = fz_concat(ctm, fz_translate(0, -page->mediabox.max.y));
@@ -609,18 +544,56 @@ static void handlemouse(int x, int y, int btn)
 	if (link)
 	{
 		SetCursor(handcurs);
-		if (btn)
+		if (btn == 1 && state == 1)
 		{
 			if (fz_isstring(link->dest))
 				gotouri(link->dest);
 			if (fz_isindirect(link->dest))
 				gotopage(link->dest);
+			return;
 		}
 	}
 	else
 	{
 		SetCursor(arrowcurs);
 	}
+
+	if (state == 1)
+	{
+		isdown = 1;
+		SetCapture(hwnd);
+	}
+	else if (state == -1)
+	{
+		isdown = 0;
+		ReleaseCapture();
+	}
+	else if (isdown)
+	{
+		int newx = panx + x - oldx;
+		int newy = pany + y - oldy;
+
+		/* constrain panning if window is smaller */
+		if (winwidth <= image->w && winheight <= image->h)
+		{
+			if (newx > 0) newx = 0;
+			if (newx + image->w < winwidth)
+				newx = winwidth - image->w;
+			if (newy > 0) newy = 0;
+			if (newy + image->h < winheight)
+				newy = winheight - image->h;
+		}
+
+		if (panx != newx || pany != newy)
+		{
+			panx = newx;
+			pany = newy;
+			winrepaint();
+		}
+	}
+
+	oldx = x;
+	oldy = y;
 }
 
 LRESULT CALLBACK
@@ -649,8 +622,18 @@ windproc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
 		//puts("WM_KILLFOCUS");
 		return 0;
 
+	case WM_SIZE:
+		if (wParam == SIZE_MINIMIZED)
+			return 0;
+		if (wParam == SIZE_MAXIMIZED)
+			shrinkwrap = 0;
+		winwidth = LOWORD(lParam);
+		winheight = HIWORD(lParam);
+		winrepaint();
+		return 0;
+
 	case WM_SIZING:
-		//puts("WM_SIZING");
+		shrinkwrap = 0;
 		return 0;
 
 	/* Paint events are low priority and automagically catenated
@@ -671,33 +654,33 @@ windproc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
 
 	case WM_LBUTTONDOWN:
 		//puts("WM_LBUTTONDOWN");
-		handlemouse(x, y, 1);
-		return 0;
-	case WM_RBUTTONDOWN:
-		//puts("WM_RBUTTONDOWN");
-		handlemouse(x, y, 4);
+		handlemouse(x, y, 1, 1);
 		return 0;
 	case WM_MBUTTONDOWN:
 		//puts("WM_MBUTTONDOWN");
-		handlemouse(x, y, 2);
+		handlemouse(x, y, 2, 1);
+		return 0;
+	case WM_RBUTTONDOWN:
+		//puts("WM_RBUTTONDOWN");
+		handlemouse(x, y, 3, 1);
 		return 0;
 
 	case WM_LBUTTONUP:
 		//puts("WM_LBUTTONUP");
-		handlemouse(x, y, 0);
+		handlemouse(x, y, 1, -1);
 		return 0;
-	case WM_RBUTTONUP:
+	case WM_MBUTTONUP:
 		//puts("WM_RBUTTONUP");
-		handlemouse(x, y, 0);
+		handlemouse(x, y, 2, -1);
 		return 0;
-	case WM_MBUTTONUP:
+	case WM_RBUTTONUP:
 		//puts("WM_RBUTTONUP");
-		handlemouse(x, y, 0);
+		handlemouse(x, y, 3, -1);
 		return 0;
 
 	case WM_MOUSEMOVE:
 		//puts("WM_MOUSEMOVE");
-		handlemouse(x, y, 0);
+		handlemouse(x, y, 0, 0);
 		return 0;
 
 	/* Mouse wheel */
@@ -740,6 +723,7 @@ windproc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
 		case VK_NEXT:
 		case VK_ESCAPE:
 			handlekey(wParam);
+			handlemouse(oldx, oldy, 0, 0);	/* update cursor */
 			return 0;
 		}
 		return 1;
@@ -748,6 +732,7 @@ windproc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
 	case WM_CHAR:
 		//printf("WM_CHAR: %d '%c'\n", wParam, wParam);
 		handlekey(wParam);
+		handlemouse(oldx, oldy, 0, 0);	/* update cursor */
 		return 0;
 	}
 
@@ -757,6 +742,160 @@ windproc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
 	return DefWindowProc(hwnd, message, wParam, lParam);
 }
 
+/*
+ * Draw page, init and main stuff
+ */
+
+void showpage(void)
+{
+	fz_error *error;
+	fz_matrix ctm;
+	fz_rect bbox;
+	fz_obj *obj;
+
+	assert(pageno > 0 && pageno <= pdf_getpagecount(pages));
+
+	SetCursor(waitcurs);
+
+	if (image)
+		fz_droppixmap(image);
+	image = nil;
+
+	obj = pdf_getpageobject(pages, pageno - 1);
+	if (obj == pageobj)
+		goto Lskipload;
+	pageobj = obj;
+
+	if (page)
+		pdf_droppage(page);
+
+	error = pdf_loadpage(&page, xref, pageobj);
+	if (error)
+		fz_abort(error);
+
+Lskipload:
+
+	ctm = fz_identity();
+	ctm = fz_concat(ctm, fz_translate(0, -page->mediabox.max.y));
+	ctm = fz_concat(ctm, fz_scale(zoom, -zoom));
+	ctm = fz_concat(ctm, fz_rotate(rotate + page->rotate));
+
+	bbox = fz_transformaabb(ctm, page->mediabox);
+
+	error = fz_rendertree(&image, rast, page->tree, ctm, fz_roundrect(bbox), 1);
+	if (error)
+		fz_abort(error);
+
+	winconvertimage();
+
+	SetCursor(arrowcurs);
+	{
+		char buf[512];
+		sprintf(buf, "%s - %d/%d", doctitle, pageno, count);
+		SetWindowTextA(hwnd, buf);
+	}
+
+	if (shrinkwrap)
+	{
+		if (winwidth == image->w)
+			panx = 0;
+		if (winheight == image->h)
+			pany = 0;
+		winresize(image->w, image->h);
+	}
+
+	winrepaint();
+}
+
+void pdfopen(void)
+{
+	fz_error *error;
+	fz_obj *obj;
+
+	error = pdf_newxref(&xref);
+	if (error)
+		fz_abort(error);
+
+	error = pdf_loadxref(xref, filename);
+	if (error)
+	{
+		if (!strncmp(error->msg, "ioerror", 7))
+			fz_abort(error);
+		winwarn(
+			"There was a problem with file \"%s\".\n"
+			"It may be corrupted, or generated by broken software.\n\n"
+			"%s\n\nTrying to continue anyway...",
+				filename, error->msg);
+		error = pdf_repairxref(xref, filename);
+		if (error)
+			fz_abort(error);
+	}
+
+	error = pdf_decryptxref(xref);
+	if (error)
+		fz_abort(error);
+
+	if (xref->crypt)
+	{
+		error = pdf_setpassword(xref->crypt, password);
+		while (error)
+		{
+			fz_droperror(error);
+			password = getpassword();
+			if (!password)
+				exit(1);
+			error = pdf_setpassword(xref->crypt, password);
+			if (error)
+				winwarn("Invalid password.");
+		}
+	}
+
+	obj = fz_dictgets(xref->trailer, "Root");
+	if (!obj)
+		fz_abort(fz_throw("syntaxerror: missing Root object"));
+	error = pdf_loadindirect(&xref->root, xref, obj);
+	if (error) fz_abort(error);
+
+	obj = fz_dictgets(xref->trailer, "Info");
+	if (obj)
+	{
+		error = pdf_loadindirect(&xref->info, xref, obj);
+		if (error) fz_abort(error);
+	}
+
+	error = pdf_loadnametrees(xref);
+	if (error) fz_abort(error);
+
+	error = pdf_loadoutline(&outline, xref);
+	if (error) fz_abort(error);
+
+	doctitle = filename;
+	if (strrchr(doctitle, '\\')) doctitle = strrchr(doctitle, '\\') + 1;
+	if (strrchr(doctitle, '/')) doctitle = strrchr(doctitle, '/') + 1;
+	if (xref->info)
+	{
+		obj = fz_dictgets(xref->info, "Title");
+		if (obj)
+		{
+			error = pdf_toutf8(&doctitle, obj);
+			if (error) fz_abort(error);
+		}
+	}
+
+//	if (outline)
+//		pdf_debugoutline(outline, 0);
+
+	error = pdf_loadpagetree(&pages, xref);
+	if (error) fz_abort(error);
+
+	count = pdf_getpagecount(pages);
+
+	error = fz_newrenderer(&rast, pdf_devicergb, 0, 1024 * 512);
+	if (error) fz_abort(error);
+
+	image = nil;
+}
+
 int main(int argc, char **argv)
 {
 	char buf[1024];
@@ -783,10 +922,7 @@ int main(int argc, char **argv)
 	if (argc - optind == 0)
 	{
 		if (!getfilename(buf, sizeof buf))
-		{
-			help();
 			exit(0);
-		}
 		filename = buf;
 	}
 	else