GUACAMOLE-1622: Separated logic into single responsibility functions.
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@ -336,29 +336,29 @@ guac_terminal_options* guac_terminal_options_create(
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}
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/**
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* Calculate the available height and width in pixels within the terminal
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* and set those values on the terminal struct.
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* Then use the pixel height and width to calculate the available height and
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* width in characters and store the results in the pointer arguments.
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* Calculate the available height and width in characters for text display in
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* the terminal and store the results in the pointer arguments.
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*
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* @param terminal
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* The terminal provides character width and height for calculations.
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* This function requires outer_width, outer_height,
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* display->margin, display->char_height, and display->char_width
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* to be set on terminal in order to calculate available dimensions.
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*
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* @param columns
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* Set with the available width for text of the terminal, by column count.
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* @param height
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* The outer height of the terminal, in pixels.
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*
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* @param width
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* The outer width of the terminal, in pixels.
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*
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* @param rows
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* Set with the available height for text of the terminal, by row count.
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* Calculated height of the terminal for text display, in characters.
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*
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* @param columns
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* Calculated width of the terminal for text display, in characters.
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*
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*/
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static void calculate_and_save_available_dimensions(guac_terminal* term,
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int* columns, int* rows) {
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static void calculate_rows_and_columns(guac_terminal* term,
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int height, int width, int *rows, int *columns) {
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int margin = term->display->margin;
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int width = term->outer_width;
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int height = term->outer_height;
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int char_width = term->display->char_width;
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int char_height = term->display->char_height;
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@ -378,20 +378,43 @@ static void calculate_and_save_available_dimensions(guac_terminal* term,
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/* Keep height within predefined maximum */
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if (*rows > GUAC_TERMINAL_MAX_ROWS) {
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*rows = GUAC_TERMINAL_MAX_ROWS;
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available_height = *rows * char_height;
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height = available_height + 2 * margin;
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}
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/* Keep width within predefined maximum */
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if (*columns > GUAC_TERMINAL_MAX_COLUMNS) {
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*columns = GUAC_TERMINAL_MAX_COLUMNS;
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available_width = *columns * char_width;
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width = available_width + GUAC_TERMINAL_SCROLLBAR_WIDTH + 2 * margin;
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}
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}
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/* Set pixel size */
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term->width = width;
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term->height = height;
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/**
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* Calculate the available height and width in pixels of the terminal for text
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* display in the terminal and store the results in the pointer arguments.
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*
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* @param terminal
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* The terminal provides character width and height for calculations.
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*
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* @param rows
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* The available height of the terminal for text display, in characters.
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*
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* @param columns
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* The available width of the terminal for text display, in characters.
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*
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* @param height
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* Calculated available height of the terminal for text display, in pixels.
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*
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* @param width
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* Calculated available width of the terminal for text display, in pixels.
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*
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*/
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static void calculate_height_and_width(guac_terminal* term,
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int rows, int columns, int *height, int *width) {
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int margin = term->display->margin;
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int char_width = term->display->char_width;
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int char_height = term->display->char_height;
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*height = rows * char_height + 2 * margin;
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*width = columns * char_width + GUAC_TERMINAL_SCROLLBAR_WIDTH + 2 * margin;
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}
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guac_terminal* guac_terminal_create(guac_client* client,
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@ -475,17 +498,26 @@ guac_terminal* guac_terminal_create(guac_client* client,
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term->clipboard = guac_common_clipboard_alloc();
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term->disable_copy = options->disable_copy;
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/* Set size of available screen area */
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term->outer_width = width;
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term->outer_height = height;
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/* Set available screen area on the terminal */
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/* Calculate available text display area by character size */
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int rows, columns;
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calculate_and_save_available_dimensions(term, &columns, &rows);
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calculate_rows_and_columns(term, height, width, &rows, &columns);
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/* Calculate available text display area in pixels */
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int available_height, available_width;
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calculate_height_and_width(term, rows, columns,
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&available_height, &available_width);
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/* Set size of available screen area */
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term->outer_height = height;
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term->outer_width = width;
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/* Set rows and columns size */
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term->term_width = columns;
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term->term_height = rows;
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term->term_width = columns;
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/* Set pixel size */
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term->height = available_height;
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term->width = available_width;
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/* Open STDIN pipe */
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if (pipe(term->stdin_pipe_fd)) {
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@ -1424,13 +1456,22 @@ int guac_terminal_resize(guac_terminal* terminal, int width, int height) {
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/* Acquire exclusive access to terminal */
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guac_terminal_lock(terminal);
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/* Set size of available screen area */
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terminal->outer_width = width;
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terminal->outer_height = height;
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/* Set available screen area on the terminal */
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/* Calculate available text display area by character size */
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int rows, columns;
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calculate_and_save_available_dimensions(terminal, &columns, &rows);
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calculate_rows_and_columns(terminal, height, width, &rows, &columns);
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/* Calculate available text display area in pixels */
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int available_height, available_width;
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calculate_height_and_width(terminal, rows, columns,
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&available_height, &available_width);
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/* Set size of available screen area */
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terminal->outer_height = height;
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terminal->outer_width = width;
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/* Set pixel size */
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terminal->height = available_height;
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terminal->width = available_width;
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/* Resize default layer to given pixel dimensions */
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guac_terminal_repaint_default_layer(terminal, client->socket);
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