Merge example_web into egui_demo_lib

egui_demo_lib/src/apps/demo/font_book.rs

@@ -0,0 +1,104 @@
+pub struct FontBook {
+    standard: bool,
+    emojis: bool,
+    filter: String,
+    text_style: egui::TextStyle,
+}
+
+impl Default for FontBook {
+    fn default() -> Self {
+        Self {
+            standard: false,
+            emojis: true,
+            filter: Default::default(),
+            text_style: egui::TextStyle::Button,
+        }
+    }
+}
+
+impl FontBook {
+    fn characters_ui(&self, ui: &mut egui::Ui, characters: &[(u32, char, &str)]) {
+        use egui::{Button, Label};
+        for &(_, chr, name) in characters {
+            if self.filter.is_empty()
+                || name.contains(&self.filter)
+                || self.filter == chr.to_string()
+            {
+                let button = Button::new(chr).text_style(self.text_style).frame(false);
+
+                let tooltip_ui = |ui: &mut egui::Ui| {
+                    ui.add(Label::new(chr).text_style(self.text_style));
+                    ui.label(format!("{}\nU+{:X}\n\nClick to copy", name, chr as u32));
+                };
+
+                if ui.add(button).on_hover_ui(tooltip_ui).clicked {
+                    ui.output().copied_text = chr.to_string();
+                }
+            }
+        }
+    }
+}
+
+impl super::Demo for FontBook {
+    fn name(&self) -> &str {
+        "🔤 Font Book"
+    }
+
+    fn show(&mut self, ctx: &egui::CtxRef, open: &mut bool) {
+        egui::Window::new(self.name()).open(open).show(ctx, |ui| {
+            use super::View;
+            self.ui(ui);
+        });
+    }
+}
+
+impl super::View for FontBook {
+    fn ui(&mut self, ui: &mut egui::Ui) {
+        use super::font_contents_emoji::FULL_EMOJI_LIST;
+        use super::font_contents_ubuntu::UBUNTU_FONT_CHARACTERS;
+
+        ui.label(format!(
+            "Egui supports {} standard characters and {} emojis.\nClick on a character to copy it.",
+            UBUNTU_FONT_CHARACTERS.len(),
+            FULL_EMOJI_LIST.len(),
+        ));
+
+        ui.separator();
+
+        egui::combo_box_with_label(ui, "Text style", format!("{:?}", self.text_style), |ui| {
+            for style in egui::TextStyle::all() {
+                ui.selectable_value(&mut self.text_style, style, format!("{:?}", style));
+            }
+        });
+
+        ui.horizontal(|ui| {
+            ui.label("Show:");
+            ui.checkbox(&mut self.standard, "Standard");
+            ui.checkbox(&mut self.emojis, "Emojis");
+        });
+
+        ui.horizontal(|ui| {
+            ui.label("Filter:");
+            ui.text_edit_singleline(&mut self.filter);
+            self.filter = self.filter.to_lowercase();
+            if ui.button("ｘ").clicked {
+                self.filter.clear();
+            }
+        });
+
+        ui.separator();
+
+        egui::ScrollArea::auto_sized().show(ui, |ui| {
+            ui.horizontal_wrapped(|ui| {
+                ui.style_mut().spacing.item_spacing = egui::Vec2::splat(2.0);
+
+                if self.standard {
+                    self.characters_ui(ui, UBUNTU_FONT_CHARACTERS);
+                }
+                if self.emojis {
+                    self.characters_ui(ui, FULL_EMOJI_LIST);
+                }
+            });
+        });
+    }
+}