GUACAMOLE-377: Restore good ol' guac_common_surface and guac_common_c…

…ursor for use by terminal.

src/common/Makefile.am

@@ -31,20 +31,34 @@ SUBDIRS = . tests
 
 noinst_HEADERS =            \
     common/io.h             \
+    common/blank_cursor.h   \
     common/clipboard.h      \
+    common/cursor.h         \
     common/defaults.h       \
+    common/dot_cursor.h     \
+    common/ibar_cursor.h    \
     common/iconv.h          \
     common/json.h           \
     common/list.h           \
-    common/string.h
+    common/pointer_cursor.h \
+    common/rect.h           \
+    common/string.h         \
+    common/surface.h
 
 libguac_common_la_SOURCES = \
     io.c                    \
+    blank_cursor.c          \
     clipboard.c             \
+    cursor.c                \
+    dot_cursor.c            \
+    ibar_cursor.c           \
     iconv.c                 \
     json.c                  \
     list.c                  \
-    string.c
+    pointer_cursor.c        \
+    rect.c                  \
+    string.c                \
+    surface.c
 
 libguac_common_la_CFLAGS =  \
     -Werror -Wall -pedantic \

src/common/blank_cursor.c

@@ -0,0 +1,75 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include "config.h"
+
+#include <cairo/cairo.h>
+#include <guacamole/client.h>
+#include <guacamole/layer.h>
+#include <guacamole/protocol.h>
+#include <guacamole/socket.h>
+#include <guacamole/user.h>
+
+/* Dimensions */
+const int guac_common_blank_cursor_width  = 1;
+const int guac_common_blank_cursor_height = 1;
+
+/* Format */
+const cairo_format_t guac_common_blank_cursor_format = CAIRO_FORMAT_ARGB32;
+const int guac_common_blank_cursor_stride = 4;
+
+/* Embedded blank cursor graphic */
+unsigned char guac_common_blank_cursor[] = {
+
+    0x00,0x00,0x00,0x00
+
+};
+
+void guac_common_set_blank_cursor(guac_user* user) {
+
+    guac_client* client = user->client;
+    guac_socket* socket = user->socket;
+
+    /* Draw to buffer */
+    guac_layer* cursor = guac_client_alloc_buffer(client);
+
+    cairo_surface_t* graphic = cairo_image_surface_create_for_data(
+            guac_common_blank_cursor,
+            guac_common_blank_cursor_format,
+            guac_common_blank_cursor_width,
+            guac_common_blank_cursor_height,
+            guac_common_blank_cursor_stride);
+
+    guac_user_stream_png(user, socket, GUAC_COMP_SRC, cursor,
+            0, 0, graphic);
+    cairo_surface_destroy(graphic);
+
+    /* Set cursor */
+    guac_protocol_send_cursor(socket, 0, 0, cursor, 0, 0,
+            guac_common_blank_cursor_width,
+            guac_common_blank_cursor_height);
+
+    /* Free buffer */
+    guac_client_free_buffer(client, cursor);
+
+    guac_client_log(client, GUAC_LOG_DEBUG,
+            "Client cursor image set to generic transparent (blank) cursor.");
+
+}
+

src/common/common/blank_cursor.h

@@ -0,0 +1,64 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#ifndef GUAC_COMMON_BLANK_CURSOR_H
+#define GUAC_COMMON_BLANK_CURSOR_H
+
+#include "config.h"
+
+#include <cairo/cairo.h>
+#include <guacamole/user.h>
+
+/**
+ * Width of the embedded transparent (blank) mouse cursor graphic.
+ */
+extern const int guac_common_blank_cursor_width;
+
+/**
+ * Height of the embedded transparent (blank) mouse cursor graphic.
+ */
+extern const int guac_common_blank_cursor_height;
+
+/**
+ * Number of bytes in each row of the embedded transparent (blank) mouse cursor
+ * graphic.
+ */
+extern const int guac_common_blank_cursor_stride;
+
+/**
+ * The Cairo grapic format of the transparent (blank) mouse cursor graphic.
+ */
+extern const cairo_format_t guac_common_blank_cursor_format;
+
+/**
+ * Embedded transparent (blank) mouse cursor graphic.
+ */
+extern unsigned char guac_common_blank_cursor[];
+
+/**
+ * Sets the cursor of the remote display to the embedded transparent (blank)
+ * cursor graphic.
+ *
+ * @param user
+ *     The guac_user to send the cursor to.
+ */
+void guac_common_set_blank_cursor(guac_user* user);
+
+#endif
+