From 99d54a6cba1582d0f702c4175cda29f139f1ffac Mon Sep 17 00:00:00 2001
From: Perry Werneck <perry.werneck@gmail.com>
Date: Mon, 9 Sep 2019 16:26:40 -0300
Subject: [PATCH] Adjustments on screen size changes.

---
 src/core/ctlr.c             |  6 +++---
 src/core/screen.c           | 10 ++++++++++
 src/core/trace_ds.c         | 11 +++++++++++
 src/include/lib3270.h       |  4 ++++
 src/include/lib3270/trace.h | 11 +++++++++++
 5 files changed, 39 insertions(+), 3 deletions(-)

diff --git a/src/core/ctlr.c b/src/core/ctlr.c
index 4240e4d..1607c45 100644
--- a/src/core/ctlr.c
+++ b/src/core/ctlr.c
@@ -24,8 +24,6 @@
  *
  * perry.werneck@gmail.com	(Alexandre Perry de Souza Werneck)
  * erico.mendonca@gmail.com	(Erico Mascarenhas Mendonça)
- * licinio@bb.com.br		(Licínio Luis Branco)
- * kraucer@bb.com.br		(Kraucer Fernandes Mazuco)
  *
  */
 
@@ -565,12 +563,13 @@ void ctlr_erase(H3270 *session, int alt)
 	if (alt)
 	{
 		// Going from 24x80 to maximum.
-		session->cbk.display(session);
+		lib3270_write_screen_trace(session,"Going from 24x80 to %dx%d",session->max.rows,session->max.cols);
 		set_viewsize(session,session->max.rows,session->max.cols);
 	}
 	else
 	{
 		// Going from maximum to 24x80.
+		lib3270_write_screen_trace(session,"Going from %dx%d to 24x80",session->max.rows,session->max.cols);
 		if (session->max.rows > 24 || session->max.cols > 80)
 		{
 			if(session->vcontrol)
@@ -587,6 +586,7 @@ void ctlr_erase(H3270 *session, int alt)
 	}
 
 	session->screen_alt = alt;
+	session->cbk.display(session);
 
 }
 
diff --git a/src/core/screen.c b/src/core/screen.c
index 205be44..655525f 100644
--- a/src/core/screen.c
+++ b/src/core/screen.c
@@ -266,6 +266,16 @@ LIB3270_EXPORT unsigned int lib3270_get_height(const H3270 *h)
 	return h->view.rows;
 }
 
+LIB3270_EXPORT unsigned int lib3270_get_max_width(const H3270 *h)
+{
+	return h->max.cols;
+}
+
+LIB3270_EXPORT unsigned int lib3270_get_max_height(const H3270 *h)
+{
+	return h->max.rows;
+}
+
 void update_model_info(H3270 *session, unsigned int model, unsigned int cols, unsigned int rows)
 {
 	if(model == session->model_num && session->max.rows == rows && session->max.cols == cols)
diff --git a/src/core/trace_ds.c b/src/core/trace_ds.c
index 64070bb..7fdfe6e 100644
--- a/src/core/trace_ds.c
+++ b/src/core/trace_ds.c
@@ -236,6 +236,17 @@ LIB3270_EXPORT void lib3270_write_nettrace(H3270 *session, const char *fmt, ...)
 	va_end(args);
 }
 
+LIB3270_EXPORT void lib3270_write_screen_trace(H3270 *session, const char *fmt, ...)
+{
+	va_list args;
+
+	if(!lib3270_get_toggle(session,LIB3270_TOGGLE_SCREEN_TRACE))
+		return;
+
+	va_start(args, fmt);
+	session->trace.handler(session,session->trace.userdata,fmt, args);
+	va_end(args);
+}
 
 LIB3270_EXPORT void lib3270_trace_event(H3270 *session, const char *fmt, ...)
 {
diff --git a/src/include/lib3270.h b/src/include/lib3270.h
index 06c8721..89681f9 100644
--- a/src/include/lib3270.h
+++ b/src/include/lib3270.h
@@ -437,6 +437,8 @@
 	 */
 	LIB3270_EXPORT unsigned int lib3270_get_width(const H3270 *h);
 
+	LIB3270_EXPORT unsigned int lib3270_get_max_width(const H3270 *h);
+
 	/**
 	 * Get current screen width in rows.
 	 *
@@ -447,6 +449,8 @@
 	 */
 	LIB3270_EXPORT unsigned int lib3270_get_height(const H3270 *h);
 
+	LIB3270_EXPORT unsigned int lib3270_get_max_height(const H3270 *h);
+
 	LIB3270_EXPORT unsigned int lib3270_get_length(const H3270 *h);
 
 	/**
diff --git a/src/include/lib3270/trace.h b/src/include/lib3270/trace.h
index 4c98865..e542a2c 100644
--- a/src/include/lib3270/trace.h
+++ b/src/include/lib3270/trace.h
@@ -97,6 +97,17 @@
 	 */
 	LIB3270_EXPORT void lib3270_write_nettrace(H3270 *session, const char *fmt, ...) LIB3270_AS_PRINTF(2,3);
 
+		/**
+	 * @brief Write on trace file.
+	 *
+	 * Write text on trace file, if screen trace is enabled.
+	 *
+	 * @param fmt 	String format.
+	 * @param ...	Arguments.
+	 *
+	 */
+	LIB3270_EXPORT void lib3270_write_screen_trace(H3270 *session, const char *fmt, ...) LIB3270_AS_PRINTF(2,3);
+
 	/**
 	 * @brief Write on trace file.
 	 *
--
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