diff options
Diffstat (limited to 'libdino/src/ui/avatar_generator.vala')
| -rw-r--r-- | libdino/src/ui/avatar_generator.vala | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/libdino/src/ui/avatar_generator.vala b/libdino/src/ui/avatar_generator.vala new file mode 100644 index 00000000..b668444c --- /dev/null +++ b/libdino/src/ui/avatar_generator.vala @@ -0,0 +1,235 @@ +using Cairo; +using Gee; +using Gdk; +using Gtk; + +using Dino.Entities; + +namespace Dino.Ui { + +public class AvatarGenerator { + + private const string COLOR_GREY = "E0E0E0"; + private const string GROUPCHAT_ICON = "system-users-symbolic"; + + StreamInteractor? stream_interactor; + bool greyscale = false; + bool stateless = false; + int width; + int height; + int scale_factor; + + public AvatarGenerator(int width, int height, int scale_factor = 1) { + this.width = width; + this.height = height; + this.scale_factor = scale_factor; + } + + public Pixbuf draw_jid(StreamInteractor stream_interactor, Jid jid, Account account) { + this.stream_interactor = stream_interactor; + return crop_corners(draw_tile(jid, account, width * scale_factor, height * scale_factor)); + } + + public Pixbuf draw_message(StreamInteractor stream_interactor, Message message) { + Jid? real_jid = MucManager.get_instance(stream_interactor).get_message_real_jid(message); + return draw_jid(stream_interactor, real_jid != null ? real_jid : message.from, message.account); + } + + public Pixbuf draw_conversation(StreamInteractor stream_interactor, Conversation conversation) { + return draw_jid(stream_interactor, conversation.counterpart, conversation.account); + } + + public Pixbuf draw_account(StreamInteractor stream_interactor, Account account) { + return draw_jid(stream_interactor, account.bare_jid, account); + } + + public Pixbuf draw_text(string text) { + string color = greyscale ? COLOR_GREY : Util.get_avatar_hex_color(text); + Pixbuf pixbuf = draw_colored_rectangle_text(color, text, width, height); + return crop_corners(pixbuf); + } + + public AvatarGenerator set_greyscale(bool greyscale) { + this.greyscale = greyscale; + return this; + } + + public AvatarGenerator set_stateless(bool stateless) { + this.stateless = stateless; + return this; + } + + private int get_left_border() { + return (int)Math.floor(scale_factor/2.0); + } + + private int get_right_border() { + return (int)Math.ceil(scale_factor/2.0); + } + + private void add_tile_to_pixbuf(Pixbuf pixbuf, Jid jid, Account account, int width, int height, int x, int y) { + Pixbuf tile = draw_chat_tile(jid, account, width, height); + tile.copy_area(0, 0, width, height, pixbuf, x, y); + } + + private Pixbuf draw_tile(Jid jid, Account account, int width, int height) { + if (MucManager.get_instance(stream_interactor).is_groupchat(jid, account)) { + return draw_groupchat_tile(jid, account, width, height); + } else { + return draw_chat_tile(jid, account, width, height); + } + } + + private Pixbuf draw_chat_tile(Jid jid, Account account, int width, int height) { + if (MucManager.get_instance(stream_interactor).is_groupchat_occupant(jid, account)) { + Jid? real_jid = MucManager.get_instance(stream_interactor).get_real_jid(jid, account); + if (real_jid != null) { + return draw_tile(real_jid, account, width, height); + } + } + Pixbuf? avatar = AvatarManager.get_instance(stream_interactor).get_avatar(account, jid); + if (avatar != null) { + double desired_ratio = (double) width / height; + double avatar_ratio = (double) avatar.width / avatar.height; + if (avatar_ratio > desired_ratio) { + int comp_width = width * avatar.height / height; + avatar = new Pixbuf.subpixbuf(avatar, avatar.width / 2 - comp_width / 2, 0, comp_width, avatar.height); + } else if (avatar_ratio < desired_ratio) { + int comp_height = height * avatar.width / width; + avatar = new Pixbuf.subpixbuf(avatar, 0, avatar.height / 2 - comp_height / 2, avatar.width, comp_height); + } + avatar = avatar.scale_simple(width, height, InterpType.BILINEAR); + if (greyscale) avatar = convert_to_greyscale(avatar); + return avatar; + } else { + string display_name = Util.get_display_name(stream_interactor, jid, account); + string color = greyscale ? COLOR_GREY : Util.get_avatar_hex_color(display_name); + return draw_colored_rectangle_text(color, display_name.get_char(0).toupper().to_string(), width, height); + } + } + + private Pixbuf draw_groupchat_tile(Jid jid, Account account, int width, int height) { + ArrayList<Jid>? occupants = MucManager.get_instance(stream_interactor).get_other_occupants(jid, account); + if (stateless || occupants == null || occupants.size == 0) { + return draw_chat_tile(jid, account, width, height); + } + Pixbuf pixbuf = initialize_pixbuf(width, height); + if (occupants.size == 1 || occupants.size == 2 || occupants.size == 3) { + add_tile_to_pixbuf(pixbuf, occupants[0], account, width / 2 - get_right_border(), height, 0, 0); + if (occupants.size == 1) { + add_tile_to_pixbuf(pixbuf, account.bare_jid, account, width / 2 - get_left_border(), height, width / 2 + get_left_border(), 0); + } else if (occupants.size == 2) { + add_tile_to_pixbuf(pixbuf, occupants[1], account, width / 2 - get_left_border(), height, width / 2 + get_left_border(), 0); + } else if (occupants.size == 3) { + add_tile_to_pixbuf(pixbuf, occupants[1], account, width / 2 - get_left_border(), height / 2 - get_right_border(), width / 2 + get_left_border(), 0); + add_tile_to_pixbuf(pixbuf, occupants[2], account, width / 2 - get_left_border(), height / 2 - get_left_border(), width / 2 + get_left_border(), height / 2 + get_left_border()); + } + } else if (occupants.size >= 4) { + add_tile_to_pixbuf(pixbuf, occupants[0], account, width / 2 - get_right_border(), height / 2 - get_right_border(), 0, 0); + add_tile_to_pixbuf(pixbuf, occupants[1], account, width / 2 - get_left_border(), height / 2 - get_right_border(), width / 2 + get_left_border(), 0); + add_tile_to_pixbuf(pixbuf, occupants[2], account, width / 2 - get_right_border(), height / 2 - get_left_border(), 0, height / 2 + get_left_border()); + if (occupants.size == 4) { + add_tile_to_pixbuf(pixbuf, occupants[3], account, width / 2 - get_left_border(), height / 2 - get_left_border(), width / 2 + get_left_border(), height / 2 + get_left_border()); + } else if (occupants.size > 4) { + Pixbuf plus_pixbuf = draw_colored_rectangle_text("555753", "+", width / 2 - get_left_border(), height / 2 - get_left_border()); + if (greyscale) plus_pixbuf = convert_to_greyscale(plus_pixbuf); + plus_pixbuf.copy_area(0, 0, width / 2 - get_left_border(), height / 2 - get_left_border(), pixbuf, width / 2 + get_left_border(), height / 2 + get_left_border()); + } + } + return pixbuf; + } + + public Pixbuf draw_colored_icon(string hex_color, string icon, int width, int height) { + int ICON_SIZE = width > 20 * scale_factor ? 17 * scale_factor : 14 * scale_factor; + + Context rectancle_context = new Context(new ImageSurface(Format.ARGB32, width, height)); + draw_colored_rectangle(rectancle_context, hex_color, width, height); + + Pixbuf icon_pixbuf = IconTheme.get_default().load_icon(icon, ICON_SIZE, IconLookupFlags.FORCE_SIZE); + Surface icon_surface = cairo_surface_create_from_pixbuf(icon_pixbuf, 1, null); + Context context = new Context(icon_surface); + context.set_operator(Operator.IN); + context.set_source_rgba(1, 1, 1, 1); + context.rectangle(0, 0, width, height); + context.fill(); + + rectancle_context.set_source_surface(icon_surface, width / 2 - ICON_SIZE / 2, height / 2 - ICON_SIZE / 2); + rectancle_context.paint(); + + return pixbuf_get_from_surface(rectancle_context.get_target(), 0, 0, width, height); + } + + public Pixbuf draw_colored_rectangle_text(string hex_color, string text, int width, int height) { + Context ctx = new Context(new ImageSurface(Format.ARGB32, width, height)); + draw_colored_rectangle(ctx, hex_color, width, height); + draw_center_text(ctx, text, width < 40 * scale_factor ? 17 * scale_factor : 25 * scale_factor, width, height); + return pixbuf_get_from_surface(ctx.get_target(), 0, 0, width, height); + } + + private static void draw_center_text(Context ctx, string text, int fontsize, int width, int height) { + ctx.select_font_face("Sans", Cairo.FontSlant.NORMAL, Cairo.FontWeight.NORMAL); + ctx.set_font_size(fontsize); + Cairo.TextExtents extents; + ctx.text_extents(text, out extents); + double x_pos = width/2 - (extents.width/2 + extents.x_bearing); + double y_pos = height/2 - (extents.height/2 + extents.y_bearing); + ctx.move_to(x_pos, y_pos); + ctx.set_source_rgba(1, 1, 1, 1); + ctx.show_text(text); + } + + private static void draw_colored_rectangle(Context ctx, string hex_color, int width, int height) { + set_source_hex_color(ctx, hex_color); + ctx.rectangle(0, 0, width, height); + ctx.fill(); + } + + private static Pixbuf convert_to_greyscale(Pixbuf pixbuf) { + Surface surface = cairo_surface_create_from_pixbuf(pixbuf, 1, null); + Context context = new Context(surface); + // convert to greyscale + context.set_operator(Operator.HSL_COLOR); + context.set_source_rgb(1, 1, 1); + context.rectangle(0, 0, pixbuf.width, pixbuf.height); + context.fill(); + // make the visible part more light + context.set_operator(Operator.ATOP); + context.set_source_rgba(1, 1, 1, 0.7); + context.rectangle(0, 0, pixbuf.width, pixbuf.height); + context.fill(); + return pixbuf_get_from_surface(context.get_target(), 0, 0, pixbuf.width, pixbuf.height); + } + + private Pixbuf crop_corners(Pixbuf pixbuf, double radius = 3) { + radius *= scale_factor; + Context ctx = new Context(new ImageSurface(Format.ARGB32, pixbuf.width, pixbuf.height)); + cairo_set_source_pixbuf(ctx, pixbuf, 0, 0); + double degrees = Math.PI / 180.0; + ctx.new_sub_path(); + ctx.arc(pixbuf.width - radius, radius, radius, -90 * degrees, 0 * degrees); + ctx.arc(pixbuf.width - radius, pixbuf.height - radius, radius, 0 * degrees, 90 * degrees); + ctx.arc(radius, pixbuf.height - radius, radius, 90 * degrees, 180 * degrees); + ctx.arc(radius, radius, radius, 180 * degrees, 270 * degrees); + ctx.close_path(); + ctx.clip(); + ctx.paint(); + return pixbuf_get_from_surface(ctx.get_target(), 0, 0, pixbuf.width, pixbuf.height); + } + + private static Pixbuf initialize_pixbuf(int width, int height) { + Context ctx = new Context(new ImageSurface(Format.ARGB32, width, height)); + ctx.set_source_rgba(1, 1, 1, 0); + ctx.rectangle(0, 0, width, height); + ctx.fill(); + return pixbuf_get_from_surface(ctx.get_target(), 0, 0, width, height); + } + + private static void set_source_hex_color(Context ctx, string hex_color) { + ctx.set_source_rgba((double) hex_color.substring(0, 2).to_long(null, 16) / 255, + (double) hex_color.substring(2, 2).to_long(null, 16) / 255, + (double) hex_color.substring(4, 2).to_long(null, 16) / 255, + hex_color.length > 6 ? (double) hex_color.substring(6, 2).to_long(null, 16) / 255 : 1); + } +} + +} |