guac_terminal_scrollbar* guac_terminal_scrollbar_alloc(guac_client* client,
const guac_layer* parent, int parent_width, int parent_height, int visible_area) {
/* Allocate scrollbar */
guac_terminal_scrollbar* scrollbar =
malloc(sizeof(guac_terminal_scrollbar));
/* Associate client */
scrollbar->client = client;
/* Init default min/max and value */
scrollbar->min = 0;
scrollbar->max = 0;
scrollbar->value = 0;
/* Init parent data */
scrollbar->parent = parent;
scrollbar->parent_width = 0;
scrollbar->parent_height = 0;
scrollbar->visible_area = 0;
/* Init handle render state */
scrollbar->render_state.handle_x = 0;
scrollbar->render_state.handle_y = 0;
scrollbar->render_state.handle_width = 0;
scrollbar->render_state.handle_height = 0;
/* Init container render state */
scrollbar->render_state.container_x = 0;
scrollbar->render_state.container_y = 0;
scrollbar->render_state.container_width = 0;
scrollbar->render_state.container_height = 0;
/* Allocate and init layers */
scrollbar->container = guac_client_alloc_layer(client);
scrollbar->handle = guac_client_alloc_layer(client);
/* Init mouse event state tracking */
scrollbar->dragging_handle = 0;
/* Reposition and resize to fit parent */
guac_terminal_scrollbar_parent_resized(scrollbar,
parent_width, parent_height, visible_area);
return scrollbar;
}
void test_layer_pool() {
guac_client* client;
int i;
int seen[GUAC_BUFFER_POOL_INITIAL_SIZE] = {0};
guac_layer* layer;
/* Get client */
client = guac_client_alloc();
CU_ASSERT_PTR_NOT_NULL_FATAL(client);
/* Fill pool */
for (i=0; i<GUAC_BUFFER_POOL_INITIAL_SIZE; i++) {
/* Allocate and throw away a buffer (should not disturb layer alloc) */
CU_ASSERT_PTR_NOT_NULL_FATAL(guac_client_alloc_buffer(client));
layer = guac_client_alloc_layer(client);
/* Index should be within pool size */
CU_ASSERT_PTR_NOT_NULL_FATAL(layer);
CU_ASSERT_FATAL(layer->index > 0);
CU_ASSERT_FATAL(layer->index <= GUAC_BUFFER_POOL_INITIAL_SIZE);
/* This should be a layer we have not seen yet */
CU_ASSERT_FALSE(seen[layer->index - 1]);
seen[layer->index - 1] = 1;
guac_client_free_layer(client, layer);
}
/* Now that pool is filled, we should get a previously seen layer */
layer = guac_client_alloc_layer(client);
CU_ASSERT_FATAL(layer->index > 0);
CU_ASSERT_FATAL(layer->index <= GUAC_BUFFER_POOL_INITIAL_SIZE);
CU_ASSERT_TRUE(seen[layer->index - 1]);
/* Free client */
guac_client_free(client);
}
guac_common_display_layer* guac_common_display_alloc_layer(
guac_common_display* display, int width, int height) {
guac_layer* layer;
guac_common_surface* surface;
/* Allocate Guacamole layer */
layer = guac_client_alloc_layer(display->client);
/* Allocate corresponding surface */
surface = guac_common_surface_alloc(display->client,
display->client->socket, layer, width, height);
/* Add layer and surface to list */
return guac_common_display_add_layer(&display->layers, layer, surface);
}
guac_terminal_display* guac_terminal_display_alloc(guac_client* client,
const char* font_name, int font_size, int dpi,
int foreground, int background) {
PangoFontMap* font_map;
PangoFont* font;
PangoFontMetrics* metrics;
PangoContext* context;
/* Allocate display */
guac_terminal_display* display = malloc(sizeof(guac_terminal_display));
display->client = client;
/* Create default surface */
display->display_layer = guac_client_alloc_layer(client);
display->select_layer = guac_client_alloc_layer(client);
display->display_surface = guac_common_surface_alloc(client,
client->socket, display->display_layer, 0, 0);
/* Select layer is a child of the display layer */
guac_protocol_send_move(client->socket, display->select_layer,
display->display_layer, 0, 0, 0);
/* Get font */
display->font_desc = pango_font_description_new();
pango_font_description_set_family(display->font_desc, font_name);
pango_font_description_set_weight(display->font_desc, PANGO_WEIGHT_NORMAL);
pango_font_description_set_size(display->font_desc,
font_size * PANGO_SCALE * dpi / 96);
font_map = pango_cairo_font_map_get_default();
context = pango_font_map_create_context(font_map);
font = pango_font_map_load_font(font_map, context, display->font_desc);
if (font == NULL) {
guac_client_abort(display->client, GUAC_PROTOCOL_STATUS_SERVER_ERROR, "Unable to get font \"%s\"", font_name);
return NULL;
}
metrics = pango_font_get_metrics(font, NULL);
if (metrics == NULL) {
guac_client_abort(display->client, GUAC_PROTOCOL_STATUS_SERVER_ERROR,
"Unable to get font metrics for font \"%s\"", font_name);
return NULL;
}
display->default_foreground = display->glyph_foreground = foreground;
display->default_background = display->glyph_background = background;
/* Calculate character dimensions */
display->char_width =
pango_font_metrics_get_approximate_digit_width(metrics) / PANGO_SCALE;
display->char_height =
(pango_font_metrics_get_descent(metrics)
+ pango_font_metrics_get_ascent(metrics)) / PANGO_SCALE;
/* Initially empty */
display->width = 0;
display->height = 0;
display->operations = NULL;
/* Initially nothing selected */
display->text_selected =
display->selection_committed = false;
return display;
}
