diff options
Diffstat (limited to 'util/font-view.c')
| -rwxr-xr-x | util/font-view.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/util/font-view.c b/util/font-view.c new file mode 100755 index 000000000..07d9e2e9d --- /dev/null +++ b/util/font-view.c @@ -0,0 +1,184 @@ +/* + * Copyright © 2008 Behdad Esfahbod + * Copyright © 2009 Chris Wilson + * + * Permission to use, copy, modify, distribute, and sell this software + * and its documentation for any purpose is hereby granted without + * fee, provided that the above copyright notice appear in all copies + * and that both that copyright notice and this permission notice + * appear in supporting documentation, and that the name of + * Chris Wilson not be used in advertising or publicity pertaining to + * distribution of the software without specific, written prior + * permission. Chris Wilson makes no representations about the + * suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS + * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL, + * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER + * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR + * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + * + * Author: Chris Wilson <chris@chris-wilson.co.uk> + */ + +#include <gtk/gtk.h> +#include <cairo.h> + +struct options { + const char *text; + const char *family; + cairo_font_weight_t weight; + cairo_font_slant_t slant; + double size; + int PAD; + const char *png; +}; + +static void +draw (cairo_t *cr, struct options *options) +{ + cairo_text_extents_t extents; + cairo_font_extents_t font_extents; + + cairo_select_font_face (cr, + options->family, options->slant, options->weight); + cairo_set_font_size (cr, options->size); + + cairo_text_extents (cr, options->text, &extents); + cairo_translate (cr, + options->PAD - extents.x_bearing, + options->PAD - extents.y_bearing); + + cairo_font_extents (cr, &font_extents); + cairo_rectangle (cr, 0, -font_extents.ascent, + extents.x_advance, font_extents.height); + cairo_move_to (cr, -options->PAD, 0); + cairo_line_to (cr, extents.width + options->PAD, 0); + cairo_set_source_rgba (cr, 1, 0, 0, .7); + cairo_stroke (cr); + + cairo_rectangle (cr, + extents.x_bearing, extents.y_bearing, + extents.width, extents.height); + cairo_set_source_rgba (cr, 0, 1, 0, .7); + cairo_stroke (cr); + + cairo_move_to (cr, 0, 0); + cairo_set_source_rgb (cr, 0, 0, 1); + cairo_show_text (cr, options->text); + cairo_fill (cr); +} + +static gboolean +expose_event (GtkWidget *w, GdkEventExpose *ev, struct options *options) +{ + cairo_t *cr; + + cr = gdk_cairo_create (w->window); + + cairo_set_source_rgb (cr, 1, 1, 1); + cairo_paint (cr); + + draw (cr, options); + + cairo_destroy (cr); + + if (options->png) { + cairo_surface_t *image; + + image = cairo_image_surface_create (CAIRO_FORMAT_RGB24, + w->allocation.width, + w->allocation.height); + cr = cairo_create (image); + cairo_set_source_rgb (cr, 1, 1, 1); + cairo_paint (cr); + + draw (cr, options); + + cairo_destroy (cr); + cairo_surface_write_to_png (image, options->png); + cairo_surface_destroy (image); + } + + return TRUE; +} + +static void +size_request (GtkWidget *w, GtkRequisition *req , struct options *options) +{ + cairo_surface_t *dummy; + cairo_t *cr; + cairo_text_extents_t extents; + + dummy = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 0, 0); + cr = cairo_create (dummy); + cairo_surface_destroy (dummy); + + cairo_select_font_face (cr, + options->family, options->slant, options->weight); + cairo_set_font_size (cr, options->size); + + cairo_text_extents (cr, options->text, &extents); + cairo_destroy (cr); + + req->width = extents.width + 2 * options->PAD; + req->height = extents.height + 2 * options->PAD; +} + +int +main (int argc, char **argv) +{ + GtkWidget *window; + struct options options = { + "The Quick Brown Fox Jumps Over The Lazy Dog!", + "@cairo:small-caps", + CAIRO_FONT_WEIGHT_NORMAL, + CAIRO_FONT_SLANT_NORMAL, + 48, + 30, + "font-view.png" + }; + + gtk_init (&argc, &argv); + + /* rudimentary argument processing */ + if (argc >= 2) { + options.family = argv[1]; + } + if (argc >= 3) { + if (strcmp (argv[2], "italic") == 0) + options.slant = CAIRO_FONT_SLANT_ITALIC; + else if (strcmp (argv[2], "oblique") == 0) + options.slant = CAIRO_FONT_SLANT_OBLIQUE; + else + options.slant = atoi (argv[2]); + } + if (argc >= 4) { + if (strcmp (argv[3], "bold") == 0) + options.weight = CAIRO_FONT_WEIGHT_BOLD; + else + options.weight = atoi (argv[3]); + } + if (argc >= 5) { + options.size = atof (argv[4]); + } + if (argc >= 6) { + options.text = argv[5]; + } + + window = gtk_window_new (GTK_WINDOW_TOPLEVEL); + g_signal_connect (window, "size-request", + G_CALLBACK (size_request), &options); + g_signal_connect (window, "expose-event", + G_CALLBACK (expose_event), &options); + g_signal_connect (window, "delete-event", + G_CALLBACK (gtk_main_quit), NULL); + + gtk_window_present (GTK_WINDOW (window)); + gtk_main (); + + return 0; +} |