drawing: improve default avatar generation
The default avatar is the first letter of the bestName of the
ContactMethod behind a circle with a random color from a palette.
Change-Id: Idde0a4830592d8286dcc34d2f3d5eafd9ae9064d
Reviewed-by: Philippe Gorley <philippe.gorley@savoirfairelinux.com>
diff --git a/src/utils/drawing.cpp b/src/utils/drawing.cpp
index 75d5849..f4bd4f8 100644
--- a/src/utils/drawing.cpp
+++ b/src/utils/drawing.cpp
@@ -29,38 +29,50 @@
static constexpr GdkRGBA MSG_COUNT_BACKGROUND = {0.984, 0.282, 0.278, 0.9}; // red 251, 72, 71, 0.9
static constexpr GdkRGBA PRESENCE_PRESENT_BACKGROUND = {0, 0.4156827, 0.8, 1.0}; // green 112, 217, 6, 0.9
static constexpr GdkRGBA PRESENCE_ABSENT_BACKGROUND = {0.984, 0.282, 0.278, 1.0}; // red 251, 72, 71, 0.9
+// This is the color palette for default avatars
+static constexpr GdkRGBA COLOR_PALETTE[] = {{0.956862, 0.262745, 0.211764, 1.0}, // red 244, green 67, blue 54, 1 (red)
+ {0.913725, 0.117647, 0.388235, 1.0}, // red 233, green 30, blue 99, 1 (pink)
+ {0.611764, 0.152941, 0.690196, 1.0}, // red 156, green 39, blue 176, 1 (purple)
+ {0.403921, 0.227450, 0.717648, 1.0}, // red 244, green 67, blue 54, 1 (deep purple)
+ {0.247058, 0.317647, 0.709803, 1.0}, // red 103, green 58, blue 183, 1 (indigo)
+ {0.129411, 0.588235, 0.952941, 1.0}, // red 63, green 81, blue 54, 1 (blue)
+ {0, 0.838254, 0.831372, 1.0}, // red 0, green 188, blue 212, 1 (cyan)
+ {0, 0.588235, 0.533333, 1.0}, // red 0, green 150, blue 136, 1 (teal)
+ {0.298039, 0.682745, 0.313725, 1.0}, // red 244, green 67, blue 54, 1 (green)
+ {0.545098, 0.764705, 0.290196, 1.0}, // red 138, green 194, blue 73, 1 (light green)
+ {0.619607, 0.619607, 0.619607, 1.0}, // red 157, green 157, blue 157, 1 (grey)
+ {0.803921, 0.862745, 0.223529, 1.0}, // red 204, green 219, blue 56, 1 (lime)
+ {1, 0.756862, 0.027450, 1.0}, // red 255, green 192, blue 6, 1 (amber)
+ {1, 0.341176, 0.133333, 1.0}, // red 255, green 86, blue 33, 1 (deep orange)
+ {0.474509, 0.333333, 0.282352, 1.0}, // red 120, green 84, blue 71, 1 (brown)
+ {0.376470, 0.490196, 0.545098, 1.0}};// red 95, green 124, blue 138, 1 (blue grey)
GdkPixbuf *
-ring_draw_fallback_avatar(int size) {
+ring_draw_fallback_avatar(int size, const char letter, const char color) {
cairo_surface_t *surface;
cairo_t *cr;
+ // Fill the background
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);
+ auto bg_color = COLOR_PALETTE[color % 16];
+ cairo_set_source_rgb (cr, bg_color.red, bg_color.green, bg_color.blue);
cairo_paint(cr);
- cairo_pattern_destroy(linpat);
+ // Draw a letter at the center of the avatar
+ cairo_text_extents_t extents;
+ cairo_select_font_face (cr, "monospace", CAIRO_FONT_SLANT_NORMAL, CAIRO_FONT_WEIGHT_NORMAL);
+ cairo_set_font_size(cr, size / 2);
+ cairo_set_source_rgb (cr, 1, 1, 1);
+ char first_letter[2] = {0};
+ first_letter[0] = letter;
+ cairo_text_extents (cr, first_letter, &extents);
+ auto x = size/2-(extents.width/2 + extents.x_bearing);
+ auto y = size/2-(extents.height/2 + extents.y_bearing);
+ cairo_move_to (cr, x, y);
+ cairo_show_text(cr, first_letter);
- 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);
+ GdkPixbuf *pixbuf = gdk_pixbuf_get_from_surface(cairo_get_target(cr), 0, 0, size, size);
/* free resources */
cairo_destroy(cr);