/* -*- Mode: C; c-set-style: linux indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */ /* mate-desktop-utils.c - Utilities for the MATE Desktop Copyright (C) 1998 Tom Tromey All rights reserved. This file is part of the Mate Library. The Mate Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The Mate Library 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the Mate Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */ /* @NOTATION@ */ #include <config.h> #include <glib.h> #include <gio/gio.h> #include <glib/gi18n-lib.h> #include <gdk/gdk.h> #include <gtk/gtk.h> #define MATE_DESKTOP_USE_UNSTABLE_API #include <mate-desktop-utils.h> #include "private.h" static void gtk_style_shade (GdkRGBA *a, GdkRGBA *b, gdouble k); static void rgb_to_hls (gdouble *r, gdouble *g, gdouble *b); static void hls_to_rgb (gdouble *h, gdouble *l, gdouble *s); /** * mate_desktop_prepend_terminal_to_vector: * @argc: a pointer to the vector size * @argv: a pointer to the vector * * Prepends a terminal (either the one configured as default in the user's * MATE setup, or one of the common xterm emulators) to the passed in vector, * modifying it in the process. The vector should be allocated with #g_malloc, * as this will #g_free the original vector. Also all elements must have been * allocated separately. That is the standard glib/MATE way of doing vectors * however. If the integer that @argc points to is negative, the size will * first be computed. Also note that passing in pointers to a vector that is * empty, will just create a new vector for you. **/ void mate_desktop_prepend_terminal_to_vector (int *argc, char ***argv) { char **real_argv; int real_argc; int i, j; char **term_argv = NULL; int term_argc = 0; GSettings *settings; gchar *terminal = NULL; char **the_argv; g_return_if_fail (argc != NULL); g_return_if_fail (argv != NULL); _mate_desktop_init_i18n (); /* sanity */ if(*argv == NULL) *argc = 0; the_argv = *argv; /* compute size if not given */ if (*argc < 0) { for (i = 0; the_argv[i] != NULL; i++) ; *argc = i; } settings = g_settings_new ("org.mate.applications-terminal"); terminal = g_settings_get_string (settings, "exec"); if (terminal) { gchar *command_line; gchar *exec_flag; exec_flag = g_settings_get_string (settings, "exec-arg"); if (exec_flag == NULL) command_line = g_strdup (terminal); else command_line = g_strdup_printf ("%s %s", terminal, exec_flag); g_shell_parse_argv (command_line, &term_argc, &term_argv, NULL /* error */); g_free (command_line); g_free (exec_flag); g_free (terminal); } g_object_unref (settings); if (term_argv == NULL) { char *check; term_argc = 2; term_argv = g_new0 (char *, 3); check = g_find_program_in_path ("mate-terminal"); if (check != NULL) { term_argv[0] = check; /* Note that mate-terminal takes -x and * as -e in mate-terminal is broken we use that. */ term_argv[1] = g_strdup ("-x"); } else { if (check == NULL) check = g_find_program_in_path ("nxterm"); if (check == NULL) check = g_find_program_in_path ("color-xterm"); if (check == NULL) check = g_find_program_in_path ("rxvt"); if (check == NULL) check = g_find_program_in_path ("xterm"); if (check == NULL) check = g_find_program_in_path ("dtterm"); if (check == NULL) { g_warning (_("Cannot find a terminal, using " "xterm, even if it may not work")); check = g_strdup ("xterm"); } term_argv[0] = check; term_argv[1] = g_strdup ("-e"); } } real_argc = term_argc + *argc; real_argv = g_new (char *, real_argc + 1); for (i = 0; i < term_argc; i++) real_argv[i] = term_argv[i]; for (j = 0; j < *argc; j++, i++) real_argv[i] = (char *)the_argv[j]; real_argv[i] = NULL; g_free (*argv); *argv = real_argv; *argc = real_argc; /* we use g_free here as we sucked all the inner strings * out from it into real_argv */ g_free (term_argv); } /** * mate_gdk_spawn_command_line_on_screen: * @screen: a GdkScreen * @command: a command line * @error: return location for errors * * This is a replacement for gdk_spawn_command_line_on_screen, deprecated * in GDK 2.24 and removed in GDK 3.0. * * gdk_spawn_command_line_on_screen is like g_spawn_command_line_async(), * except the child process is spawned in such an environment that on * calling gdk_display_open() it would be returned a GdkDisplay with * screen as the default screen. * * This is useful for applications which wish to launch an application * on a specific screen. * * Returns: TRUE on success, FALSE if error is set. * * Since: 1.7.1 **/ gboolean mate_gdk_spawn_command_line_on_screen (GdkScreen *screen, const gchar *command, GError **error) { GAppInfo *appinfo = NULL; GdkAppLaunchContext *context = NULL; gboolean res = FALSE; appinfo = g_app_info_create_from_commandline (command, NULL, G_APP_INFO_CREATE_NONE, error); if (appinfo) { context = gdk_display_get_app_launch_context (gdk_screen_get_display (screen)); res = g_app_info_launch (appinfo, NULL, G_APP_LAUNCH_CONTEXT (context), error); g_object_unref (context); g_object_unref (appinfo); } return res; } void _mate_desktop_init_i18n (void) { static gboolean initialized = FALSE; if (!initialized) { bindtextdomain (GETTEXT_PACKAGE, MATELOCALEDIR); #ifdef HAVE_BIND_TEXTDOMAIN_CODESET bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8"); #endif initialized = TRUE; } } /** * gtk_style_shade: * @a: the starting colour * @b: [out] the resulting colour * @k: amount to scale lightness and saturation by * * Takes a colour "a", scales the lightness and saturation by a certain amount, * and sets "b" to the resulting colour. * gtkstyle.c cut-and-pastage. */ static void gtk_style_shade (GdkRGBA *a, GdkRGBA *b, gdouble k) { gdouble red; gdouble green; gdouble blue; red = a->red; green = a->green; blue = a->blue; rgb_to_hls (&red, &green, &blue); green *= k; if (green > 1.0) green = 1.0; else if (green < 0.0) green = 0.0; blue *= k; if (blue > 1.0) blue = 1.0; else if (blue < 0.0) blue = 0.0; hls_to_rgb (&red, &green, &blue); b->red = red; b->green = green; b->blue = blue; } /** * rgb_to_hls: * @r: on input, red; on output, hue * @g: on input, green; on output, lightness * @b: on input, blue; on output, saturation * * Converts a red/green/blue triplet to a hue/lightness/saturation triplet. */ static void rgb_to_hls (gdouble *r, gdouble *g, gdouble *b) { gdouble min; gdouble max; gdouble red; gdouble green; gdouble blue; gdouble h, l, s; gdouble delta; red = *r; green = *g; blue = *b; if (red > green) { if (red > blue) max = red; else max = blue; if (green < blue) min = green; else min = blue; } else { if (green > blue) max = green; else max = blue; if (red < blue) min = red; else min = blue; } l = (max + min) / 2; s = 0; h = 0; if (max != min) { if (l <= 0.5) s = (max - min) / (max + min); else s = (max - min) / (2 - max - min); delta = max -min; if (red == max) h = (green - blue) / delta; else if (green == max) h = 2 + (blue - red) / delta; else if (blue == max) h = 4 + (red - green) / delta; h *= 60; if (h < 0.0) h += 360; } *r = h; *g = l; *b = s; } /** * hls_to_rgb: * @h: on input, hue; on output, red * @l: on input, lightness; on output, green * @s on input, saturation; on output, blue * * Converts a hue/lightness/saturation triplet to a red/green/blue triplet. */ static void hls_to_rgb (gdouble *h, gdouble *l, gdouble *s) { gdouble hue; gdouble lightness; gdouble saturation; gdouble m1, m2; gdouble r, g, b; lightness = *l; saturation = *s; if (lightness <= 0.5) m2 = lightness * (1 + saturation); else m2 = lightness + saturation - lightness * saturation; m1 = 2 * lightness - m2; if (saturation == 0) { *h = lightness; *l = lightness; *s = lightness; } else { hue = *h + 120; while (hue > 360) hue -= 360; while (hue < 0) hue += 360; if (hue < 60) r = m1 + (m2 - m1) * hue / 60; else if (hue < 180) r = m2; else if (hue < 240) r = m1 + (m2 - m1) * (240 - hue) / 60; else r = m1; hue = *h; while (hue > 360) hue -= 360; while (hue < 0) hue += 360; if (hue < 60) g = m1 + (m2 - m1) * hue / 60; else if (hue < 180) g = m2; else if (hue < 240) g = m1 + (m2 - m1) * (240 - hue) / 60; else g = m1; hue = *h - 120; while (hue > 360) hue -= 360; while (hue < 0) hue += 360; if (hue < 60) b = m1 + (m2 - m1) * hue / 60; else if (hue < 180) b = m2; else if (hue < 240) b = m1 + (m2 - m1) * (240 - hue) / 60; else b = m1; *h = r; *l = g; *s = b; } } /* Based on set_color() in gtkstyle.c */ #define LIGHTNESS_MULT 1.3 #define DARKNESS_MULT 0.7 void mate_desktop_gtk_style_get_light_color (GtkStyleContext *style, GtkStateFlags state, GdkRGBA *color) { gtk_style_context_get_background_color (style, state, color); gtk_style_shade (color, color, LIGHTNESS_MULT); } void mate_desktop_gtk_style_get_dark_color (GtkStyleContext *style, GtkStateFlags state, GdkRGBA *color) { gtk_style_context_get_background_color (style, state, color); gtk_style_shade (color, color, DARKNESS_MULT); }