Forms: handle print request, both from javascript and from named action

Currently the app windows app responds with a message box explaining that
the MuPDF library passes print requests to the app, but the app does not
implement printing.

9 files changed, 47 insertions, 0 deletions

diff --git a/apps/jstest_main.c b/apps/jstest_main.c
index a6ff06d1..7f4bc54a 100644
--- a/apps/jstest_main.c
+++ b/apps/jstest_main.c
@@ -53,6 +53,11 @@ void winalert(pdfapp_t *app, fz_alert_event *alert)
 	}
 }
 
+void winprint(pdfapp_t *app)
+{
+	fprintf(stderr, "The MuPDF library supports printing, but this application currently does not");
+}
+
 static char pd_password[256] = "";
 static char td_textinput[LONGLINE] = "";
 
diff --git a/apps/pdfapp.c b/apps/pdfapp.c
index 0a87565a..5cb0adea 100644
--- a/apps/pdfapp.c
+++ b/apps/pdfapp.c
@@ -113,6 +113,9 @@ static void event_cb(fz_doc_event *event, void *data)
 			winalert(app, alert);
 		}
 		break;
+	case FZ_DOCUMENT_EVENT_PRINT:
+		winprint(app);
+		break;
 	}
 }
 
diff --git a/apps/pdfapp.h b/apps/pdfapp.h
index 46dcf291..4f251c4d 100644
--- a/apps/pdfapp.h
+++ b/apps/pdfapp.h
@@ -38,6 +38,7 @@ extern void winfullscreen(pdfapp_t*, int state);
 extern int winsavequery(pdfapp_t*);
 extern int wingetsavepath(pdfapp_t*, char *buf, int len);
 extern void winalert(pdfapp_t *, fz_alert_event *alert);
+extern void winprint(pdfapp_t *);
 
 struct pdfapp_s
 {
diff --git a/apps/win_main.c b/apps/win_main.c
index 97f927f2..ba9e74a7 100644
--- a/apps/win_main.c
+++ b/apps/win_main.c
@@ -155,6 +155,11 @@ void winalert(pdfapp_t *app, fz_alert_event *alert)
 	}
 }
 
+void winprint(pdfapp_t *app)
+{
+	MessageBoxA(hwndframe, "The MuPDF library supports printing, but this application currently does not", "Print document", MB_ICONWARNING);
+}
+
 int winsavequery(pdfapp_t *app)
 {
 	switch(MessageBoxA(hwndframe, "File has unsaved changes. Do you want to save", "MuPDF", MB_YESNOCANCEL))
diff --git a/apps/x11_main.c b/apps/x11_main.c
index 182aadb4..722568d5 100644
--- a/apps/x11_main.c
+++ b/apps/x11_main.c
@@ -126,6 +126,11 @@ void winalert(pdfapp_t *app, fz_alert_event *alert)
 	}
 }
 
+void winprint(pdfapp_t *app)
+{
+	fprintf(stderr, "The MuPDF library supports printing, but this application currently does not");
+}
+
 char *winpassword(pdfapp_t *app, char *filename)
 {
 	char *r = password;
diff --git a/pdf/mupdf-internal.h b/pdf/mupdf-internal.h
index 7fd287dd..9e5b4848 100644
--- a/pdf/mupdf-internal.h
+++ b/pdf/mupdf-internal.h
@@ -633,6 +633,7 @@ void pdf_choice_widget_set_value(pdf_document *doc, fz_widget *tw, int n, char *
 void pdf_set_doc_event_callback(pdf_document *doc, fz_doc_event_cb *event_cb, void *data);
 
 void pdf_event_issue_alert(pdf_document *doc, fz_alert_event *event);
+void pdf_event_issue_print(pdf_document *doc);
 
 /*
  * Javascript handler
diff --git a/pdf/pdf_event.c b/pdf/pdf_event.c
index 5be3534b..653d2a1f 100644
--- a/pdf/pdf_event.c
+++ b/pdf/pdf_event.c
@@ -31,6 +31,16 @@ void pdf_event_issue_alert(pdf_document *doc, fz_alert_event *alert)
 	}
 }
 
+void pdf_event_issue_print(pdf_document *doc)
+{
+	fz_doc_event e;
+
+	e.type = FZ_DOCUMENT_EVENT_PRINT;
+
+	if (doc->event_cb)
+		doc->event_cb(&e, doc->event_cb_data);
+}
+
 void pdf_set_doc_event_callback(pdf_document *doc, fz_doc_event_cb *fn, void *data)
 {
 	doc->event_cb = fn;
diff --git a/pdf/pdf_form.c b/pdf/pdf_form.c
index 6821e232..22b552cf 100644
--- a/pdf/pdf_form.c
+++ b/pdf/pdf_form.c
@@ -1688,6 +1688,13 @@ static void execute_action(pdf_document *doc, pdf_obj *obj, pdf_obj *a)
 		{
 			reset_form(doc, pdf_dict_gets(a, "Fields"), pdf_to_int(pdf_dict_gets(a, "Flags")) & 1);
 		}
+		else if (!strcmp(type, "Named"))
+		{
+			char *name = pdf_to_name(pdf_dict_gets(a, "N"));
+
+			if (!strcmp(name, "Print"))
+				pdf_event_issue_print(doc);
+		}
 	}
 }
 
diff --git a/pdf/pdf_js.c b/pdf/pdf_js.c
index 2a3c865c..a5fb553c 100644
--- a/pdf/pdf_js.c
+++ b/pdf/pdf_js.c
@@ -519,6 +519,15 @@ static pdf_jsimp_obj *doc_resetForm(void *jsctx, void *obj, int argc, pdf_jsimp_
 	return NULL;
 }
 
+static pdf_jsimp_obj *doc_print(void *jsctx, void *obj, int argc, pdf_jsimp_obj *args[])
+{
+	pdf_js  *js = (pdf_js *)jsctx;
+
+	pdf_event_issue_print(js->doc);
+
+	return NULL;
+}
+
 static void declare_dom(pdf_js *js)
 {
 	pdf_jsimp      *imp       = js->imp;
@@ -527,6 +536,7 @@ static void declare_dom(pdf_js *js)
 	js->doctype = pdf_jsimp_new_type(imp, NULL);
 	pdf_jsimp_addmethod(imp, js->doctype, "getField", doc_getField);
 	pdf_jsimp_addmethod(imp, js->doctype, "resetForm", doc_resetForm);
+	pdf_jsimp_addmethod(imp, js->doctype, "print", doc_print);
 	pdf_jsimp_addproperty(imp, js->doctype, "event", doc_getEvent, doc_setEvent);
 	pdf_jsimp_addproperty(imp, js->doctype, "app", doc_getApp, doc_setApp);