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using Cairo;
using Gee;
using Gdk;
using Gtk;
using Dino.Entities;
using Xmpp;
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 ImageSurface draw_jid(StreamInteractor stream_interactor, Jid jid_, Account account) {
Jid? jid = jid_;
this.stream_interactor = stream_interactor;
Jid? real_jid = stream_interactor.get_module(MucManager.IDENTITY).get_real_jid(jid, account);
if (real_jid != null && stream_interactor.get_module(AvatarManager.IDENTITY).get_avatar(account, real_jid) != null) {
jid = real_jid;
}
ImageSurface surface = crop_corners(draw_tile(jid, account, width * scale_factor, height * scale_factor), 3 * scale_factor);
surface.set_device_scale(scale_factor, scale_factor);
return surface;
}
public ImageSurface draw_message(StreamInteractor stream_interactor, Message message) {
if (message.real_jid != null && stream_interactor.get_module(AvatarManager.IDENTITY).get_avatar(message.account, message.real_jid) != null) {
return draw_jid(stream_interactor, message.real_jid, message.account);
}
return draw_jid(stream_interactor, message.from, message.account);
}
public ImageSurface draw_conversation(StreamInteractor stream_interactor, Conversation conversation) {
return draw_jid(stream_interactor, conversation.counterpart, conversation.account);
}
public ImageSurface draw_account(StreamInteractor stream_interactor, Account account) {
return draw_jid(stream_interactor, account.bare_jid, account);
}
public ImageSurface draw_text(string text) {
ImageSurface surface = draw_colored_rectangle_text(COLOR_GREY, text, width, height);
return crop_corners(surface, 3 * scale_factor);
}
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 = pixbuf_get_from_surface(draw_chat_tile(jid, account, width, height), 0, 0, width, height);
tile.copy_area(0, 0, width, height, pixbuf, x, y);
}
private ImageSurface draw_tile(Jid jid, Account account, int width, int height) {
ImageSurface surface;
if (stream_interactor.get_module(MucManager.IDENTITY).is_groupchat(jid, account)) {
surface = draw_groupchat_tile(jid, account, width, height);
} else {
surface = draw_chat_tile(jid, account, width, height);
}
return surface;
}
private ImageSurface draw_chat_tile(Jid jid, Account account, int width, int height) {
Pixbuf? pixbuf = stream_interactor.get_module(AvatarManager.IDENTITY).get_avatar(account, jid);
if (pixbuf != null) {
double desired_ratio = (double) width / height;
double avatar_ratio = (double) pixbuf.width / pixbuf.height;
if (avatar_ratio > desired_ratio) {
int comp_width = width * pixbuf.height / height;
pixbuf = new Pixbuf.subpixbuf(pixbuf, pixbuf.width / 2 - comp_width / 2, 0, comp_width, pixbuf.height);
} else if (avatar_ratio < desired_ratio) {
int comp_height = height * pixbuf.width / width;
pixbuf = new Pixbuf.subpixbuf(pixbuf, 0, pixbuf.height / 2 - comp_height / 2, pixbuf.width, comp_height);
}
pixbuf = pixbuf.scale_simple(width, height, InterpType.BILINEAR);
Context ctx = new Context(new ImageSurface(Format.ARGB32, pixbuf.width, pixbuf.height));
cairo_set_source_pixbuf(ctx, pixbuf, 0, 0);
ctx.paint();
ImageSurface avatar_surface = (ImageSurface) ctx.get_target();
if (greyscale) avatar_surface = convert_to_greyscale(avatar_surface);
return avatar_surface;
} else {
string display_name = Util.get_display_name(stream_interactor, jid, account);
string color = greyscale ? COLOR_GREY : Util.get_avatar_hex_color(stream_interactor, account, jid);
return draw_colored_rectangle_text(color, display_name.get_char(0).toupper().to_string(), width, height);
}
}
private ImageSurface draw_groupchat_tile(Jid jid, Account account, int width, int height) {
Gee.List<Jid>? occupants = stream_interactor.get_module(MucManager.IDENTITY).get_other_occupants(jid, account);
if (stateless || occupants == null || occupants.size == 0) {
return draw_chat_tile(jid, account, width, height);
}
for (int i = 0; i < occupants.size && i < 4; i++) {
Jid? real_jid = stream_interactor.get_module(MucManager.IDENTITY).get_real_jid(occupants[i], account);
if (real_jid != null && stream_interactor.get_module(AvatarManager.IDENTITY).get_avatar(account, real_jid) != null) {
occupants[i] = real_jid;
}
}
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) {
ImageSurface plus_surface = draw_colored_rectangle_text("555753", "+", width / 2 - get_left_border(), height / 2 - get_left_border());
if (greyscale) plus_surface = convert_to_greyscale(plus_surface);
pixbuf_get_from_surface(plus_surface, 0, 0, plus_surface.get_width(), plus_surface.get_height()).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());
}
}
Context ctx = new Context(new ImageSurface(Format.ARGB32, pixbuf.width, pixbuf.height));
cairo_set_source_pixbuf(ctx, pixbuf, 0, 0);
ctx.paint();
return (ImageSurface) ctx.get_target();
}
public ImageSurface 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);
try {
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();
} catch (Error e) { warning(@"Icon $icon does not exist"); }
return (ImageSurface) rectancle_context.get_target();
}
public ImageSurface 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 (ImageSurface) ctx.get_target();
}
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 ImageSurface convert_to_greyscale(ImageSurface surface) {
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, surface.get_width(), surface.get_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, surface.get_width(), surface.get_height());
context.fill();
return (ImageSurface) context.get_target();
}
public static Pixbuf crop_corners_pixbuf(Pixbuf pixbuf, double radius = 3) {
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);
}
public static ImageSurface crop_corners(ImageSurface surface, double radius = 3) {
Context ctx = new Context(new ImageSurface(Format.ARGB32, surface.get_width(), surface.get_height()));
ctx.set_source_surface(surface, 0, 0);
double degrees = Math.PI / 180.0;
ctx.new_sub_path();
ctx.arc(surface.get_width() - radius, radius, radius, -90 * degrees, 0 * degrees);
ctx.arc(surface.get_width() - radius, surface.get_height() - radius, radius, 0 * degrees, 90 * degrees);
ctx.arc(radius, surface.get_height() - radius, radius, 90 * degrees, 180 * degrees);
ctx.arc(radius, radius, radius, 180 * degrees, 270 * degrees);
ctx.close_path();
ctx.clip();
ctx.paint();
return (ImageSurface) ctx.get_target();
}
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);
}
}
}
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