--- /dev/null
+/* ply-console-view.c - console message viewer
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ */
+
+#include <stdlib.h>
+#include <assert.h>
+
+#include "ply-label.h"
+#include "ply-array.h"
+#include "ply-pixel-display.h"
+#include "ply-image.h"
+#include "ply-kmsg-reader.h"
+#include "ply-console-viewer.h"
+#include "ply-rich-text.h"
+
+#define TERMINAL_OUTPUT_UPDATE_INTERVAL (1.0 / 60)
+
+struct _ply_console_viewer
+{
+ ply_event_loop_t *loop;
+
+ ply_terminal_emulator_t *terminal_emulator;
+
+ ply_pixel_display_t *display;
+ ply_rectangle_t area;
+
+ ply_list_t *message_labels;
+
+ uint32_t is_hidden : 1;
+ uint32_t output_queued : 1;
+ uint32_t needs_redraw : 1;
+
+ char *font;
+ long font_height;
+ long font_width;
+ int line_max_chars;
+
+ uint32_t text_color;
+};
+
+static void update_console_messages (ply_console_viewer_t *console_viewer);
+static void on_terminal_emulator_output (ply_console_viewer_t *console_viewer);
+
+bool ply_console_viewer_preferred (void)
+{
+ return !ply_kernel_command_line_has_argument ("plymouth.prefer-fbcon");
+}
+
+ply_console_viewer_t *
+ply_console_viewer_new (ply_pixel_display_t *display,
+ const char *font)
+{
+ ply_console_viewer_t *console_viewer;
+ ply_label_t *console_message_label, *measure_label;
+ size_t line_count;
+
+ console_viewer = calloc (1, sizeof(struct _ply_console_viewer));
+
+ console_viewer->message_labels = ply_list_new ();
+ console_viewer->is_hidden = true;
+
+ console_viewer->font = strdup (font);
+
+ measure_label = ply_label_new ();
+ ply_label_set_text (measure_label, " ");
+ ply_label_set_font (measure_label, console_viewer->font);
+
+ console_viewer->text_color = PLY_CONSOLE_VIEWER_LOG_TEXT_COLOR;
+
+ console_viewer->font_height = ply_label_get_height (measure_label);
+ console_viewer->font_width = ply_label_get_width (measure_label);
+ /* Allow the label to be the size of how many characters can fit in the width of the screeen, minus one for larger fonts that have some size overhead */
+ console_viewer->line_max_chars = ply_pixel_display_get_width (display) / console_viewer->font_width - 1;
+ line_count = ply_pixel_display_get_height (display) / console_viewer->font_height;
+
+ /* Display at least one line */
+ if (line_count < 0)
+ line_count = 1;
+
+ ply_label_free (measure_label);
+
+ for (size_t label_index = 0; label_index < line_count; label_index++) {
+ console_message_label = ply_label_new ();
+ ply_label_set_font (console_message_label, console_viewer->font);
+ ply_list_append_data (console_viewer->message_labels, console_message_label);
+ }
+
+ console_viewer->terminal_emulator = ply_terminal_emulator_new (line_count);
+
+ ply_terminal_emulator_watch_for_output (console_viewer->terminal_emulator,
+ (ply_terminal_emulator_output_handler_t)
+ on_terminal_emulator_output,
+ console_viewer);
+
+ return console_viewer;
+}
+
+void
+ply_console_viewer_free (ply_console_viewer_t *console_viewer)
+{
+ ply_list_node_t *node;
+ ply_label_t *console_message_label;
+
+ ply_list_foreach (console_viewer->message_labels, node) {
+ console_message_label = ply_list_node_get_data (node);
+ ply_label_free (console_message_label);
+ }
+ ply_list_free (console_viewer->message_labels);
+ ply_terminal_emulator_free (console_viewer->terminal_emulator);
+
+ free (console_viewer->font);
+ free (console_viewer);
+}
+
+static void
+update_console_messages (ply_console_viewer_t *console_viewer)
+{
+ ply_list_node_t *node;
+ ply_label_t *console_message_label;
+ size_t message_number;
+ ssize_t characters_left;
+ ply_rich_text_span_t span;
+
+ console_viewer->output_queued = false;
+
+ if (console_viewer->terminal_emulator == NULL)
+ return;
+
+ if (console_viewer->display == NULL)
+ return;
+
+ message_number = ply_terminal_emulator_get_line_count (console_viewer->terminal_emulator) - 1;
+
+ if (message_number < 0)
+ return;
+
+ ply_pixel_display_pause_updates (console_viewer->display);
+ node = ply_list_get_first_node (console_viewer->message_labels);
+ while (node != NULL) {
+ ply_rich_text_t *line = NULL;
+
+ characters_left = 0;
+ if (message_number >= 0) {
+ line = ply_terminal_emulator_get_nth_line (console_viewer->terminal_emulator, message_number);
+
+ if (line != NULL) {
+ ply_rich_text_take_reference (line);
+ characters_left = ply_rich_text_get_length (line);
+ }
+ }
+
+ span.offset = characters_left;
+ while (characters_left >= 0) {
+ console_message_label = ply_list_node_get_data (node);
+
+ span.range = span.offset % console_viewer->line_max_chars;
+ if (span.range == 0)
+ span.range = console_viewer->line_max_chars;
+
+ characters_left = span.offset - span.range - 1;
+
+ if (span.offset - span.range >= 0)
+ span.offset -= span.range;
+ else
+ span.offset = 0;
+
+ if (line != NULL) {
+ ply_label_set_rich_text (console_message_label, line, &span);
+ } else {
+ ply_label_set_text (console_message_label, "");
+ }
+
+ node = ply_list_get_next_node (console_viewer->message_labels, node);
+ if (node == NULL)
+ break;
+ }
+
+ if (line != NULL)
+ ply_rich_text_drop_reference (line);
+
+ if (message_number <= 0)
+ break;
+
+ message_number--;
+ }
+ console_viewer->needs_redraw = true;
+ ply_pixel_display_draw_area (console_viewer->display, 0, 0,
+ ply_pixel_display_get_width (console_viewer->display),
+ ply_pixel_display_get_height (console_viewer->display));
+ ply_pixel_display_unpause_updates (console_viewer->display);
+}
+
+void
+ply_console_viewer_show (ply_console_viewer_t *console_viewer,
+ ply_pixel_display_t *display)
+{
+ uint32_t label_color;
+ size_t label_index;
+ ply_list_node_t *node;
+
+ assert (console_viewer != NULL);
+
+ console_viewer->display = display;
+ console_viewer->is_hidden = false;
+
+ label_color = console_viewer->text_color;
+
+ label_index = 0;
+ ply_list_foreach (console_viewer->message_labels, node) {
+ ply_label_t *console_message_label;
+ console_message_label = ply_list_node_get_data (node);
+ ply_label_show (console_message_label, console_viewer->display,
+ console_viewer->font_width / 2,
+ (ply_pixel_display_get_height (console_viewer->display) - (console_viewer->font_height * label_index) - console_viewer->font_height));
+ ply_label_set_hex_color (console_message_label, label_color);
+ label_index++;
+ }
+
+ update_console_messages (console_viewer);
+}
+
+void
+ply_console_viewer_draw_area (ply_console_viewer_t *console_viewer,
+ ply_pixel_buffer_t *buffer,
+ long x,
+ long y,
+ unsigned long width,
+ unsigned long height)
+{
+ ply_list_node_t *node;
+ size_t label_index;
+ ply_label_t *console_message_label;
+
+ if (!console_viewer->needs_redraw)
+ return;
+
+ if (console_viewer->is_hidden)
+ return;
+
+ label_index = 0;
+ ply_list_foreach (console_viewer->message_labels, node) {
+ console_message_label = ply_list_node_get_data (node);
+ ply_label_draw_area (console_message_label, buffer,
+ MAX (x, console_viewer->font_width / 2),
+ MAX (y, (ply_pixel_display_get_height (console_viewer->display) - (console_viewer->font_height * label_index) - console_viewer->font_height)),
+ MIN (ply_label_get_width (console_message_label), width),
+ MIN (height, console_viewer->font_height));
+ label_index++;
+ }
+
+ console_viewer->needs_redraw = false;
+}
+
+void
+ply_console_viewer_hide (ply_console_viewer_t *console_viewer)
+{
+ ply_list_node_t *node;
+ ply_label_t *console_message_label;
+
+ if (console_viewer->is_hidden)
+ return;
+
+ console_viewer->is_hidden = true;
+
+ ply_list_foreach (console_viewer->message_labels, node) {
+ console_message_label = ply_list_node_get_data (node);
+ ply_label_hide (console_message_label);
+ }
+
+ console_viewer->display = NULL;
+}
+
+static void
+on_terminal_emulator_output (ply_console_viewer_t *console_viewer)
+{
+ if (console_viewer->output_queued)
+ return;
+
+ if (console_viewer->is_hidden)
+ return;
+
+ ply_event_loop_watch_for_timeout (ply_event_loop_get_default (),
+ TERMINAL_OUTPUT_UPDATE_INTERVAL,
+ (ply_event_loop_timeout_handler_t)
+ update_console_messages, console_viewer);
+ console_viewer->output_queued = true;
+}
+
+void
+ply_console_viewer_set_text_color (ply_console_viewer_t *console_viewer,
+ uint32_t hex_color)
+{
+ console_viewer->text_color = hex_color;
+}
+
+void
+ply_console_viewer_convert_boot_buffer (ply_console_viewer_t *console_viewer,
+ ply_buffer_t *boot_buffer)
+{
+ ply_terminal_emulator_convert_boot_buffer (console_viewer->terminal_emulator, boot_buffer);
+}
+
+void
+ply_console_viewer_parse_lines (ply_console_viewer_t *console_viewer,
+ const char *text,
+ size_t size)
+{
+ ply_terminal_emulator_parse_lines (console_viewer->terminal_emulator, text, size);
+}
--- /dev/null
+/* ply-console-viewer.h - console message viewer
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ */
+#ifndef PLY_CONSOLE_VIEWER_H
+#define PLY_CONSOLE_VIEWER_H
+
+#include "ply-key-file.h"
+#include "ply-list.h"
+#include "ply-event-loop.h"
+#include "ply-pixel-display.h"
+#include "ply-terminal-emulator.h"
+
+typedef struct _ply_console_viewer ply_console_viewer_t;
+
+#define PLY_CONSOLE_VIEWER_LOG_TEXT_COLOR 0xffffffff /* white */
+
+#ifndef PLY_HIDE_FUNCTION_DECLARATIONS
+bool ply_console_viewer_preferred (void);
+ply_console_viewer_t *ply_console_viewer_new (ply_pixel_display_t *display,
+ const char *fontdesc);
+void ply_console_viewer_free (ply_console_viewer_t *console_viewer);
+void ply_console_viewer_show (ply_console_viewer_t *console_viewer,
+ ply_pixel_display_t *display);
+void ply_console_viewer_draw_area (ply_console_viewer_t *console_viewer,
+ ply_pixel_buffer_t *buffer,
+ long x,
+ long y,
+ unsigned long width,
+ unsigned long height);
+void ply_console_viewer_hide (ply_console_viewer_t *console_viewer);
+void ply_console_viewer_set_text_color (ply_console_viewer_t *console_viewer,
+ uint32_t hex_color);
+void ply_console_viewer_convert_boot_buffer (ply_console_viewer_t *console_viewer,
+ ply_buffer_t *boot_buffer);
+void ply_console_viewer_parse_lines (ply_console_viewer_t *console_viewer,
+ const char *text,
+ size_t size);
+#endif //PLY_HIDE_FUNCTION_DECLARATIONS
+
+#endif //PLY_CONSOLE_VIEWER_H
projects / thirdparty / plymouth.git / commitdiff
