theme: update aqua theme and simplify codes

examples/aqua-zh.typ

@@ -1,50 +1,40 @@
 #import "../lib.typ": *
 
 #let s = themes.aqua.register(aspect-ratio: "16-9", lang: "zh")
-
 #let s = (s.methods.info)(
-  self: s, 
-  title: [An Instruction to Typst-Beamer],
-  author: [Author],
+  self: s,
+  title: [标题],
+  subtitle: [副标题],
+  author: [作者],
   date: datetime.today(),
+  institution: [机构],
 )
-#let (init, slides) = utils.methods(s)
+#let (init, slides, touying-outline, alert) = utils.methods(s)
 #show: init
 
-#set text(font: "Microsoft YaHei") // "Microsoft YaHei" is recommended.
-#let (slide, title-slide, outline-slide, new-section-slide) = utils.slides(s) 
-#show: slides
+#show strong: alert
 
-= 制作一个标题页
+#let (slide, title-slide, outline-slide, focus-slide) = utils.slides(s)
+#show: slides
 
-#slide[
-  = Typst Beamer 如何做？
-  欢迎阅读 Typst 的中文文档！Typst 是为科学写作而诞生的基于标记的排版系统。 它被设计之初就是作为一种替代品，用于替代像 LaTeX 这样的高级工具，又或者是像 Word 和 Google Docs 这样的简单工具。 我们对 Typst 的目标是构建一个功能强大的排版工具，并且让用户可以愉快地使用它。 
+= 第一节
 
-  本文档分为两部分：一个适合初学者的教程，其通过实际用例介绍 Typst；以及一个全面的参考，以解释 Typst 的所有概念和功能。
+== 小标题
 
-  我们还邀请您加入我们为 Typst 建立的社区。Typst 仍是一个非常年轻的项目，因此我们非常希望能够得到您的反馈。
+#slide[
+  #lorem(40)
 ]
 
-= 制作一个目录页
-
-== 标题2
-
-#grid(
-  columns: (1fr,1fr),
-  column-gutter: 50pt,
-  row-gutter: 20pt,
-  [属性 1], [属性 2],
-  [#lorem(20)], [#lorem(20)],
-)
-
+#slide[
+  #lorem(40)
+]
 
-== Summary
+== 总结
 
 #align(center + horizon)[
   #set text(size: 3em, weight: "bold", s.colors.primary)
 
   THANKS FOR ALL
 
   敬请指正！
-]
+]

examples/aqua.typ

@@ -1,37 +1,37 @@
 #import "../lib.typ": *
 
 #let s = themes.aqua.register(aspect-ratio: "16-9")
-
 #let s = (s.methods.info)(
-  self: s, 
-  title: [An Instruction to Typst-Beamer],
-  author: [Author],
+  self: s,
+  title: [Title],
+  subtitle: [Subtitle],
+  author: [Authors],
   date: datetime.today(),
+  institution: [Institution],
 )
-#let (init, slides) = utils.methods(s)
+#let (init, slides, touying-outline, alert) = utils.methods(s)
 #show: init
 
-#let (slide, title-slide, outline-slide, new-section-slide) = utils.slides(s) 
+#show strong: alert
+
+#let (slide, title-slide, outline-slide, focus-slide) = utils.slides(s)
 #show: slides
 
-= Title Slide
+= The Section
+
+== Slide Title
 
 #slide[
-  = How to make Typst-Beamer?
-  #lorem(80)
+  #lorem(40)
 ]
 
-= Content Slide
-
-== Test for grid
+#slide[
+  #lorem(40)
+]
 
-#grid(
-  columns: (1fr, 1fr),
-  column-gutter: 50pt,
-  row-gutter: 20pt,
-  [Feature 1], [Feature 2],
-  [#lorem(20)], [#lorem(20)],
-)
+#focus-slide[
+  Another variant with primary color in background...
+]
 
 == Summary
 

examples/slides.typ

@@ -4,6 +4,8 @@
 // #let s = themes.simple.register(aspect-ratio: "16-9", footer: [Simple slides])
 // #let s = themes.metropolis.register(aspect-ratio: "16-9", footer: [Custom footer])
 // #let s = themes.dewdrop.register(aspect-ratio: "16-9", footer: [Dewdrop])
+// #let s = themes.university.register(aspect-ratio: "16-9")
+// #let s = themes.aqua.register(aspect-ratio: "16-9")
 #let s = (s.methods.info)(
   self: s,
   title: [Title],

themes/aqua.typ

@@ -26,7 +26,7 @@
           fill: self.colors.primary-light,
           size: 20pt, 
           weight: "regular",
-          if type(info.date) == datetime { info.date.display(self.datetime-format) } else { info.date },
+          utils.info-date(self),
         )
       }
     )
@@ -110,6 +110,13 @@
   (self.methods.touying-slide)(self: self, repeat: none, section: section, body)
 }
 
+#let focus-slide(self: none, body) = {
+  self = utils.empty-page(self)
+  self.page-args += (fill: self.colors.primary, margin: 2em)
+  set text(fill: white, size: 2em, weight: "bold")
+  (self.methods.touying-slide)(self: self, repeat: none, align(horizon + center, body))
+}
+
 #let slide(self: none, title: auto, ..args) = {
   if title != auto {
     self.aqua-title = title
@@ -137,6 +144,7 @@
 #let register(
   self: s,
   aspect-ratio: "16-9",
+  footer: states.slide-counter.display(),
   lang: "en",
 ) = {
   assert(lang in ("zh", "en"), message: "lang must be 'zh' or 'en'")
@@ -153,6 +161,7 @@
     [ ]
     states.current-section-title
   }
+  self.aqua-footer = footer
   self.aqua-lang = lang
   self.aqua-background = (self) => {
     place(left + top, dx: -15pt, dy: -26pt,
@@ -193,7 +202,7 @@
   }
   let footer(self) = {
     set text(size: 0.8em)
-    place(right, dx: -5%, states.slide-counter.display())
+    place(right, dx: -5%, utils.call-or-display(self, self.aqua-footer))
   }
   self.page-args += (
     paper: "presentation-" + aspect-ratio,
@@ -208,6 +217,7 @@
   }
   self.methods.title-slide = title-slide
   self.methods.outline-slide = outline-slide
+  self.methods.focus-slide = focus-slide
   self.methods.new-section-slide = new-section-slide
   self.methods.touying-new-section-slide = new-section-slide
   self.methods.slide = slide

themes/dewdrop.typ

@@ -67,7 +67,7 @@
       }
       v(1em)
       if info.date != none {
-        block(spacing: 1em, if type(info.date) == datetime { info.date.display(self.datetime-format) } else { info.date })
+        block(spacing: 1em, utils.info-date(self))
       }
       set text(size: .8em)
       if info.institution != none {

themes/metropolis.typ

@@ -65,7 +65,7 @@
         block(spacing: 1em, info.author)
       }
       if info.date != none {
-        block(spacing: 1em, if type(info.date) == datetime { info.date.display(self.datetime-format) } else { info.date })
+        block(spacing: 1em, utils.info-date(self))
       }
       set text(size: .8em)
       if info.institution != none {

themes/simple.typ

@@ -33,8 +33,7 @@
 }
 
 #let focus-slide(self: none, background: auto, foreground: white, body) = {
-  self.page-args.header = none
-  self.page-args.footer = none
+  self = utils.empty-page(self)
   self.page-args.fill = if background == auto { self.colors.primary } else { background }
   set text(fill: foreground, size: 1.5em)
   centered-slide(self: self, align(center + horizon, body))

themes/university.typ

@@ -88,7 +88,7 @@
       }
       if info.date != none {
         parbreak()
-        text(size: .8em, if type(info.date) == datetime { info.date.display(self.datetime-format) } else { info.date })
+        text(size: .8em, utils.info-date(self))
       }
     })
   }