| /* |
| * Copyright (C) 2015-2016 Savoir-faire Linux Inc. |
| * Author: Stepan Salenikovich <stepan.salenikovich@savoirfairelinux.com> |
| * |
| * 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 3 of the License, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| #include "drawing.h" |
| |
| #include <gtk/gtk.h> |
| #include <math.h> |
| |
| static constexpr const char* MSG_COUNT_FONT = "Sans"; |
| static constexpr int MSG_COUNT_FONT_SIZE = 12; |
| static constexpr GdkRGBA MSG_COUNT_FONT_COLOUR = {1.0, 1.0, 1.0, 1.0}; // white |
| static constexpr GdkRGBA MSG_COUNT_BACKGROUND = {0.984, 0.282, 0.278, 0.9}; // red 251, 72, 71, 0.9 |
| |
| GdkPixbuf * |
| ring_draw_fallback_avatar(int size) { |
| cairo_surface_t *surface; |
| cairo_t *cr; |
| |
| surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, size, size); |
| cr = cairo_create(surface); |
| |
| cairo_pattern_t *linpat = cairo_pattern_create_linear(0, 0, 0, size); |
| cairo_pattern_add_color_stop_rgb(linpat, 0, 0.937, 0.937, 0.937); |
| cairo_pattern_add_color_stop_rgb(linpat, 1, 0.969, 0.969, 0.969); |
| |
| cairo_set_source(cr, linpat); |
| cairo_paint(cr); |
| |
| cairo_pattern_destroy(linpat); |
| |
| int avatar_size = size * 0.3; |
| GtkIconInfo *icon_info = gtk_icon_theme_lookup_icon(gtk_icon_theme_get_default(), "avatar-default-symbolic", |
| avatar_size, GTK_ICON_LOOKUP_GENERIC_FALLBACK); |
| GdkPixbuf *pixbuf_icon = gtk_icon_info_load_icon(icon_info, NULL); |
| g_object_unref(icon_info); |
| |
| if (pixbuf_icon != NULL) { |
| gdk_cairo_set_source_pixbuf(cr, pixbuf_icon, (size - avatar_size) / 2, (size - avatar_size) / 2); |
| g_object_unref(pixbuf_icon); |
| cairo_rectangle(cr, (size - avatar_size) / 2, (size - avatar_size) / 2, avatar_size, avatar_size); |
| cairo_fill(cr); |
| } |
| |
| GdkPixbuf *pixbuf = gdk_pixbuf_get_from_surface(surface, 0, 0, size, size); |
| |
| /* free resources */ |
| cairo_destroy(cr); |
| cairo_surface_destroy(surface); |
| |
| return pixbuf; |
| } |
| |
| GdkPixbuf * |
| ring_draw_conference_avatar(int size) { |
| cairo_surface_t *surface; |
| cairo_t *cr; |
| |
| surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, size, size); |
| cr = cairo_create(surface); |
| |
| cairo_pattern_t *linpat = cairo_pattern_create_linear(0, 0, 0, size); |
| cairo_pattern_add_color_stop_rgb(linpat, 0, 0.937, 0.937, 0.937); |
| cairo_pattern_add_color_stop_rgb(linpat, 1, 0.969, 0.969, 0.969); |
| |
| cairo_set_source(cr, linpat); |
| cairo_paint(cr); |
| |
| int avatar_size = size * 0.5; |
| GtkIconInfo *icon_info = gtk_icon_theme_lookup_icon(gtk_icon_theme_get_default(), "system-users-symbolic", |
| avatar_size, GTK_ICON_LOOKUP_GENERIC_FALLBACK); |
| GdkPixbuf *pixbuf_icon = gtk_icon_info_load_icon(icon_info, NULL); |
| g_object_unref(icon_info); |
| |
| if (pixbuf_icon != NULL) { |
| gdk_cairo_set_source_pixbuf(cr, pixbuf_icon, (size - avatar_size) / 2, (size - avatar_size) / 2); |
| g_object_unref(pixbuf_icon); |
| cairo_rectangle(cr, (size - avatar_size) / 2, (size - avatar_size) / 2, avatar_size, avatar_size); |
| cairo_fill(cr); |
| } |
| |
| GdkPixbuf *pixbuf = gdk_pixbuf_get_from_surface(surface, 0, 0, size, size); |
| |
| /* free resources */ |
| cairo_destroy(cr); |
| cairo_surface_destroy(surface); |
| |
| return pixbuf; |
| } |
| |
| GdkPixbuf * |
| ring_frame_avatar(GdkPixbuf *avatar) { |
| int extra_space = 10; |
| int offset = extra_space/2; |
| int w = gdk_pixbuf_get_width(avatar); |
| int h = gdk_pixbuf_get_height(avatar); |
| int w_surface = w + extra_space; |
| int h_surface = h + extra_space; |
| cairo_surface_t *surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w_surface, h_surface); |
| cairo_t *cr = cairo_create(surface); |
| |
| cairo_set_source_rgba(cr, 0, 0, 0, 0); |
| cairo_rectangle(cr, 0, 0, w_surface, h_surface); |
| cairo_fill(cr); |
| |
| double aspect = (double)w/(double)h; |
| double corner_radius = 5; |
| double radius = corner_radius/aspect; |
| double degrees = M_PI / 180.0; |
| |
| // create the square path with ronded corners |
| cairo_new_sub_path (cr); |
| cairo_arc (cr, offset + w - radius, offset + radius, radius, -90 * degrees, 0 * degrees); |
| cairo_arc (cr, offset + w - radius, offset + h - radius, radius, 0 * degrees, 90 * degrees); |
| cairo_arc (cr, offset + radius, offset + h - radius, radius, 90 * degrees, 180 * degrees); |
| cairo_arc (cr, offset + radius, offset + radius, radius, 180 * degrees, 270 * degrees); |
| cairo_close_path (cr); |
| |
| // in case the image has alpha, we want to first set the background of the part inside the |
| // blue frame to black; otherwise the resulting image will show whatever is in the background, |
| // which can be weird in certain cases (eg: the image displayed over a video) |
| cairo_set_source_rgba(cr, 0, 0, 0, 1); |
| cairo_fill_preserve(cr); |
| |
| // now draw the image over this black square |
| gdk_cairo_set_source_pixbuf(cr, avatar, offset, offset); |
| cairo_fill_preserve(cr); |
| |
| // now draw the blue frame |
| cairo_set_source_rgba (cr, 58.0/256.0, 191/256.0, 210/256.0, 1.0); |
| cairo_set_line_width (cr, 2.0); |
| cairo_stroke (cr); |
| |
| GdkPixbuf *pixbuf = gdk_pixbuf_get_from_surface(surface, 0, 0, w_surface, h_surface); |
| |
| /* free resources */ |
| cairo_destroy(cr); |
| cairo_surface_destroy(surface); |
| |
| return pixbuf; |
| } |
| |
| static void |
| create_rounded_rectangle_path(cairo_t *cr, double corner_radius, double x, double y, double w, double h) |
| { |
| double radius = corner_radius; |
| double degrees = M_PI / 180.0; |
| |
| cairo_new_sub_path (cr); |
| cairo_arc (cr, x + w - radius, y + radius, radius, -90 * degrees, 0 * degrees); |
| cairo_arc (cr, x + w - radius, y + h - radius, radius, 0 * degrees, 90 * degrees); |
| cairo_arc (cr, x + radius, y + h - radius, radius, 90 * degrees, 180 * degrees); |
| cairo_arc (cr, x + radius, y + radius, radius, 180 * degrees, 270 * degrees); |
| cairo_close_path (cr); |
| } |
| |
| /** |
| * Draws the unread message count in the bottom right corner of the given image. |
| * In the case that the count is less than or equal to 0, nothing is drawn. |
| */ |
| GdkPixbuf * |
| ring_draw_unread_messages(const GdkPixbuf *avatar, int unread_count) { |
| if (unread_count <= 0) { |
| // simply return a copy of the original pixbuf |
| return gdk_pixbuf_copy(avatar); |
| } |
| int w = gdk_pixbuf_get_width(avatar); |
| int h = gdk_pixbuf_get_height(avatar); |
| cairo_surface_t *surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w, h); |
| cairo_t *cr = cairo_create(surface); |
| cairo_surface_destroy(surface); |
| |
| /* draw original image */ |
| gdk_cairo_set_source_pixbuf(cr, avatar, 0, 0); |
| cairo_paint(cr); |
| |
| /* make text */ |
| char *text = g_strdup_printf("%d", unread_count); |
| cairo_text_extents_t extents; |
| |
| cairo_select_font_face (cr, MSG_COUNT_FONT, |
| CAIRO_FONT_SLANT_NORMAL, |
| CAIRO_FONT_WEIGHT_NORMAL); |
| |
| cairo_set_font_size (cr, MSG_COUNT_FONT_SIZE); |
| cairo_text_extents (cr, text, &extents); |
| |
| /* draw rounded rectangle around the text, with 3 pixel border |
| * ie: 6 pixels higher, 6 pixels wider */ |
| int border_width = 3; |
| double rec_x = w - extents.width - border_width * 2; |
| double rec_y = h - extents.height - border_width * 2; |
| double rec_w = extents.width + border_width * 2; |
| double rec_h = extents.height + border_width * 2; |
| double corner_radius = rec_h/2.5; |
| create_rounded_rectangle_path(cr, corner_radius, rec_x, rec_y, rec_w, rec_h); |
| cairo_set_source_rgba(cr, MSG_COUNT_BACKGROUND.red, MSG_COUNT_BACKGROUND.blue, MSG_COUNT_BACKGROUND.green, MSG_COUNT_BACKGROUND.alpha); |
| cairo_fill(cr); |
| |
| /* draw text */ |
| cairo_move_to (cr, w-extents.width-border_width, h-border_width); |
| cairo_set_source_rgb(cr, MSG_COUNT_FONT_COLOUR.red, MSG_COUNT_FONT_COLOUR.blue, MSG_COUNT_FONT_COLOUR.green); |
| cairo_show_text (cr, text); |
| |
| GdkPixbuf *pixbuf = gdk_pixbuf_get_from_surface(surface, 0, 0, w, h); |
| |
| /* free resources */ |
| cairo_destroy(cr); |
| g_free(text); |
| |
| return pixbuf; |
| } |