Light app.css (#386)

* light app css implementation

* update style

* update css

pkg/app/gen/app.light.css

@@ -0,0 +1,147 @@
+/* Basics */
+
+/* Loader and Not Found */
+.app-wasm-layout {
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+  width: 100%;
+  height: 100%;
+}
+
+.app-wasm-icon {
+  max-width: 100px;
+  max-height: 100px;
+  user-select: none;
+  margin: 0 6px;
+  -moz-user-select: none;
+  -webkit-user-drag: none;
+  -webkit-user-select: none;
+  -ms-user-select: none;
+}
+
+.app-wasm-label {
+  margin-top: 6px;
+  font-size: 16pt;
+  font-weight: 100;
+  letter-spacing: 1px;
+  max-width: 480px;
+  text-align: center;
+  text-transform: lowercase;
+}
+
+.app-notfound-title {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  font-size: 65pt;
+  font-weight: 100;
+}
+
+.app-spin {
+  animation: app-spin-frames 2.5s infinite linear;
+}
+
+@keyframes app-spin-frames {
+  from {
+    transform: rotate(0deg);
+  }
+
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+/* Menu */
+#app-contextmenu-background {
+  position: fixed;
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+  left: 0;
+  top: 0;
+  z-index: 42000;
+}
+
+.app-contextmenu {
+  position: fixed;
+  min-width: 150px;
+  max-width: 480px;
+  padding: 6px 0;
+  border-radius: 6px;
+  border: solid 1px rgba(255, 255, 255, 0.1);
+  background-color: rgba(40, 38, 37, 0.97);
+  color: white;
+  -webkit-box-shadow: -1px 12px 38px 0px rgba(0, 0, 0, 0.6);
+  -moz-box-shadow: -1px 12px 38px 0px rgba(0, 0, 0, 0.6);
+  box-shadow: -1px 12px 38px 0px rgba(0, 0, 0, 0.6);
+}
+
+.app-contextmenu-hidden {
+  display: none;
+}
+
+.app-contextmenu-visible {
+  display: block;
+}
+
+@media (prefers-color-scheme: light) {
+  .app-contextmenu {
+    color: black;
+    background-color: rgba(221, 221, 221, 0.97);
+    border: solid 1px rgba(0, 0, 0, 0.2);
+  }
+}
+
+.app-menuitem {
+  display: flex;
+  align-items: center;
+  border: 0;
+  border-radius: 0;
+  margin: 0;
+  padding: 3px 24px;
+  width: 100%;
+  text-align: left;
+  background-color: transparent;
+  color: currentColor;
+}
+
+.app-menuitem:hover {
+  background-color: deepskyblue;
+}
+
+.app-menuitem:disabled {
+  opacity: 0.15;
+  background-color: transparent;
+}
+
+.app-menuitem-separator {
+  width: 100%;
+  height: 0;
+  margin: 6px 0;
+  border-top: solid 1px rgba(255, 255, 255, 0.1);
+}
+
+@media (prefers-color-scheme: light) {
+  .app-menuitem-separator {
+    border-top: solid 1px rgba(0, 0, 0, 0.2);
+  }
+}
+
+.app-menuitem-label {
+  user-select: none;
+  flex-grow: 1;
+}
+
+.app-menuitem-keys {
+  flex-grow: 0;
+  margin-left: 12px;
+  text-transform: capitalize;
+}
+
+.app-menuitem-icon {
+  width: 18px;
+  height: 18px;
+  margin-right: 12px;
+}

pkg/app/gen/scripts.go

@@ -38,6 +38,7 @@ func main() {
 		{Var: "appWorkerJS", Filename: "gen/app-worker.js"},
 		{Var: "manifestJSON", Filename: "gen/manifest.json"},
 		{Var: "appCSS", Filename: "gen/app.css"},
+		{Var: "appLightCSS", Filename: "gen/app.light.css"},
 	}
 
 	fmt.Fprintln(f, "const(")

pkg/app/http.go

@@ -100,6 +100,10 @@ type Handler struct {
 	// The page title.
 	Title string
 
+	// UseMinimalDefaultStyles makes app.css to adopt a minimal implementation
+	// that does not style the default HTML elements.
+	UseMinimalDefaultStyles bool
+
 	// The version number. This is used in order to update the PWA application
 	// in the browser. It must be set when deployed on a live system in order to
 	// prevent recurring updates.
@@ -389,7 +393,11 @@ func (h *Handler) initManifestJSON() {
 }
 
 func (h *Handler) initAppCSS() {
-	h.appCSS = []byte(appCSS)
+	css := appCSS
+	if h.UseMinimalDefaultStyles {
+		css = appLightCSS
+	}
+	h.appCSS = []byte(css)
 }
 
 func (h *Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {