* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
- * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
+ * © 2009-2013 Michael Stapelberg and contributors (see also: LICENSE)
*
*/
#include <assert.h>
static double pango_font_green;
static double pango_font_blue;
+/* Necessary to track whether the dpi changes and trigger a LOG() message,
+ * which is more easily visible to users. */
+static double logged_dpi = 0.0;
+
+static PangoLayout *create_layout_with_dpi(cairo_t *cr) {
+ PangoLayout *layout;
+ PangoContext *context;
+
+ context = pango_cairo_create_context(cr);
+ const double dpi = (double)root_screen->height_in_pixels * 25.4 /
+ (double)root_screen->height_in_millimeters;
+ if (logged_dpi != dpi) {
+ logged_dpi = dpi;
+ LOG("X11 root window dictates %f DPI\n", dpi);
+ } else {
+ DLOG("X11 root window dictates %f DPI\n", dpi);
+ }
+ pango_cairo_context_set_resolution(context, dpi);
+ layout = pango_layout_new(context);
+ g_object_unref(context);
+
+ return layout;
+}
+
/*
* Loads a Pango font description into an i3Font structure. Returns true
* on success, false otherwise.
LOG("Using Pango font %s, size %d\n",
pango_font_description_get_family(font->specific.pango_desc),
- pango_font_description_get_size(font->specific.pango_desc) / PANGO_SCALE
- );
+ pango_font_description_get_size(font->specific.pango_desc) / PANGO_SCALE);
/* We cache root_visual_type here, since you must call
* load_pango_font before any other pango function
/* Create a dummy Pango layout to compute the font height */
cairo_surface_t *surface = cairo_xcb_surface_create(conn, root_screen->root, root_visual_type, 1, 1);
cairo_t *cr = cairo_create(surface);
- PangoLayout *layout = pango_cairo_create_layout(cr);
+ PangoLayout *layout = create_layout_with_dpi(cr);
pango_layout_set_font_description(layout, font->specific.pango_desc);
/* Get the font height */
*
*/
static void draw_text_pango(const char *text, size_t text_len,
- xcb_drawable_t drawable, int x, int y, int max_width) {
+ xcb_drawable_t drawable, int x, int y,
+ int max_width, bool is_markup) {
/* Create the Pango layout */
/* root_visual_type is cached in load_pango_font */
cairo_surface_t *surface = cairo_xcb_surface_create(conn, drawable,
- root_visual_type, x + max_width, y + savedFont->height);
+ root_visual_type, x + max_width, y + savedFont->height);
cairo_t *cr = cairo_create(surface);
- PangoLayout *layout = pango_cairo_create_layout(cr);
+ PangoLayout *layout = create_layout_with_dpi(cr);
+ gint height;
+
pango_layout_set_font_description(layout, savedFont->specific.pango_desc);
pango_layout_set_width(layout, max_width * PANGO_SCALE);
pango_layout_set_wrap(layout, PANGO_WRAP_CHAR);
pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_END);
+ if (is_markup)
+ pango_layout_set_markup(layout, text, text_len);
+ else
+ pango_layout_set_text(layout, text, text_len);
+
/* Do the drawing */
cairo_set_source_rgb(cr, pango_font_red, pango_font_green, pango_font_blue);
- cairo_move_to(cr, x, y);
- pango_layout_set_text(layout, text, text_len);
pango_cairo_update_layout(cr, layout);
+ pango_layout_get_pixel_size(layout, NULL, &height);
+ /* Center the piece of text vertically if its height is smaller than the
+ * cached font height, and just let "high" symbols fall out otherwise. */
+ int yoffset = (height < savedFont->height ? 0.5 : 1) * (height - savedFont->height);
+ cairo_move_to(cr, x, y - yoffset);
pango_cairo_show_layout(cr, layout);
/* Free resources */
* Calculate the text width using Pango rendering.
*
*/
-static int predict_text_width_pango(const char *text, size_t text_len) {
+static int predict_text_width_pango(const char *text, size_t text_len, bool is_markup) {
/* Create a dummy Pango layout */
/* root_visual_type is cached in load_pango_font */
cairo_surface_t *surface = cairo_xcb_surface_create(conn, root_screen->root, root_visual_type, 1, 1);
cairo_t *cr = cairo_create(surface);
- PangoLayout *layout = pango_cairo_create_layout(cr);
+ PangoLayout *layout = create_layout_with_dpi(cr);
/* Get the font width */
gint width;
pango_layout_set_font_description(layout, savedFont->specific.pango_desc);
- pango_layout_set_text(layout, text, text_len);
+
+ if (is_markup)
+ pango_layout_set_markup(layout, text, text_len);
+ else
+ pango_layout_set_text(layout, text, text_len);
+
pango_cairo_update_layout(cr, layout);
pango_layout_get_pixel_size(layout, &width, NULL);
/*
* Loads a font for usage, also getting its metrics. If fallback is true,
- * the fonts 'fixed' or '-misc-*' will be loaded instead of exiting.
+ * the fonts 'fixed' or '-misc-*' will be loaded instead of exiting. If any
+ * font was previously loaded, it will be freed.
*
*/
i3Font load_font(const char *pattern, const bool fallback) {
+ /* if any font was previously loaded, free it now */
+ free_font();
+
i3Font font;
font.type = FONT_TYPE_NONE;
+ /* No XCB connction, return early because we're just validating the
+ * configuration file. */
+ if (conn == NULL) {
+ return font;
+ }
+
#if PANGO_SUPPORT
/* Try to load a pango font if specified */
- if (strlen(pattern) > strlen("xft:") && !strncmp(pattern, "xft:", strlen("xft:"))) {
- pattern += strlen("xft:");
- if (load_pango_font(&font, pattern))
+ if (strlen(pattern) > strlen("pango:") && !strncmp(pattern, "pango:", strlen("pango:"))) {
+ const char *font_pattern = pattern + strlen("pango:");
+ if (load_pango_font(&font, font_pattern)) {
+ font.pattern = sstrdup(pattern);
return font;
+ }
+ } else if (strlen(pattern) > strlen("xft:") && !strncmp(pattern, "xft:", strlen("xft:"))) {
+ const char *font_pattern = pattern + strlen("xft:");
+ if (load_pango_font(&font, font_pattern)) {
+ font.pattern = sstrdup(pattern);
+ return font;
+ }
}
#endif
/* Send all our requests first */
font.specific.xcb.id = xcb_generate_id(conn);
xcb_void_cookie_t font_cookie = xcb_open_font_checked(conn, font.specific.xcb.id,
- strlen(pattern), pattern);
+ strlen(pattern), pattern);
xcb_query_font_cookie_t info_cookie = xcb_query_font(conn, font.specific.xcb.id);
/* Check for errors. If errors, fall back to default font. */
pattern, error->error_code);
pattern = "fixed";
font_cookie = xcb_open_font_checked(conn, font.specific.xcb.id,
- strlen(pattern), pattern);
+ strlen(pattern), pattern);
info_cookie = xcb_query_font(conn, font.specific.xcb.id);
/* Check if we managed to open 'fixed' */
ELOG("Could not open fallback font 'fixed', trying with '-misc-*'.\n");
pattern = "-misc-*";
font_cookie = xcb_open_font_checked(conn, font.specific.xcb.id,
- strlen(pattern), pattern);
+ strlen(pattern), pattern);
info_cookie = xcb_query_font(conn, font.specific.xcb.id);
if ((error = xcb_request_check(conn, font_cookie)) != NULL)
errx(EXIT_FAILURE, "Could open neither requested font nor fallbacks "
- "(fixed or -misc-*): X11 error %d", error->error_code);
+ "(fixed or -misc-*): X11 error %d",
+ error->error_code);
}
}
+ font.pattern = sstrdup(pattern);
LOG("Using X font %s\n", pattern);
/* Get information (height/name) for this font */
}
/*
- * Frees the resources taken by the current font.
+ * Frees the resources taken by the current font. If no font was previously
+ * loaded, it simply returns.
*
*/
void free_font(void) {
+ /* if there is no saved font, simply return */
+ if (savedFont == NULL)
+ return;
+
+ free(savedFont->pattern);
switch (savedFont->type) {
case FONT_TYPE_NONE:
/* Nothing to do */
assert(false);
break;
}
+
+ savedFont = NULL;
}
/*
case FONT_TYPE_XCB: {
/* Change the font and colors in the GC */
uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
- uint32_t values[] = { foreground, background, savedFont->specific.xcb.id };
+ uint32_t values[] = {foreground, background, savedFont->specific.xcb.id};
xcb_change_gc(conn, gc, mask, values);
break;
}
static int predict_text_width_xcb(const xcb_char2b_t *text, size_t text_len);
static void draw_text_xcb(const xcb_char2b_t *text, size_t text_len, xcb_drawable_t drawable,
- xcb_gcontext_t gc, int x, int y, int max_width) {
+ xcb_gcontext_t gc, int x, int y, int max_width) {
/* X11 coordinates for fonts start at the baseline */
int pos_y = y + savedFont->specific.xcb.info->font_ascent;
return;
case FONT_TYPE_XCB:
draw_text_xcb(i3string_as_ucs2(text), i3string_get_num_glyphs(text),
- drawable, gc, x, y, max_width);
+ drawable, gc, x, y, max_width);
break;
#if PANGO_SUPPORT
case FONT_TYPE_PANGO:
/* Render the text using Pango */
draw_text_pango(i3string_as_utf8(text), i3string_get_num_bytes(text),
- drawable, x, y, max_width);
+ drawable, x, y, max_width, i3string_is_markup(text));
return;
#endif
default:
*
*/
void draw_text_ascii(const char *text, xcb_drawable_t drawable,
- xcb_gcontext_t gc, int x, int y, int max_width) {
+ xcb_gcontext_t gc, int x, int y, int max_width) {
assert(savedFont != NULL);
switch (savedFont->type) {
case FONT_TYPE_NONE:
/* Nothing to do */
return;
- case FONT_TYPE_XCB:
- {
+ case FONT_TYPE_XCB: {
size_t text_len = strlen(text);
if (text_len > 255) {
/* The text is too long to draw it directly to X */
case FONT_TYPE_PANGO:
/* Render the text using Pango */
draw_text_pango(text, strlen(text),
- drawable, x, y, max_width);
+ drawable, x, y, max_width, false);
return;
#endif
default:
/* Query the text width */
xcb_generic_error_t *error;
xcb_query_text_extents_cookie_t cookie = xcb_query_text_extents(conn,
- savedFont->specific.xcb.id, text_len, (xcb_char2b_t*)text);
+ savedFont->specific.xcb.id, text_len, (xcb_char2b_t *)text);
xcb_query_text_extents_reply_t *reply = xcb_query_text_extents_reply(conn,
- cookie, &error);
+ cookie, &error);
if (reply == NULL) {
/* We return a safe estimate because a rendering error is better than
- * a crash. Plus, the user will see the error in his log. */
+ * a crash. Plus, the user will see the error in their log. */
fprintf(stderr, "Could not get text extents (X error code %d)\n",
error->error_code);
return savedFont->specific.xcb.info->max_bounds.character_width * text_len;
/* Don't you ask me, how this one works… (Merovius) */
info = &font_table[((row - font_info->min_byte1) *
- (font_info->max_char_or_byte2 - font_info->min_char_or_byte2 + 1)) +
- (col - font_info->min_char_or_byte2)];
+ (font_info->max_char_or_byte2 - font_info->min_char_or_byte2 + 1)) +
+ (col - font_info->min_char_or_byte2)];
if (info->character_width != 0 ||
- (info->right_side_bearing |
- info->left_side_bearing |
- info->ascent |
- info->descent) != 0) {
+ (info->right_side_bearing |
+ info->left_side_bearing |
+ info->ascent |
+ info->descent) != 0) {
width += info->character_width;
}
}
#if PANGO_SUPPORT
case FONT_TYPE_PANGO:
/* Calculate extents using Pango */
- return predict_text_width_pango(i3string_as_utf8(text), i3string_get_num_bytes(text));
+ return predict_text_width_pango(i3string_as_utf8(text), i3string_get_num_bytes(text),
+ i3string_is_markup(text));
#endif
default:
assert(false);
projects / i3 / i3 / blobdiff