Update examples which use MadGraphics

Signed-off-by: Andy Liu <[email protected]>

Author: andy0808

Examples/IS31FL3731/Frame/TODO_Package.swift renamed to Examples/IS31FL3731/Frame/Package.swift

@@ -20,8 +20,5 @@ let package = Package(
                 // use specific library would speed up the compile procedure
                 .product(name: "IS31FL3731", package: "MadDrivers")
             ]),
-        .testTarget(
-            name: "FrameTests",
-            dependencies: ["Frame"]),
     ]
 )

Examples/IS31FL3731/Frame/Sources/Frame/main.swift

@@ -3,7 +3,6 @@
 import SwiftIO
 import MadBoard
 import IS31FL3731
-import MadDisplay
 
 let i2c = I2C(Id.I2C0)
 let led = IS31FL3731(i2c)

Examples/IS31FL3731/Frame/Tests/FrameTests/FrameTests.swift

@@ -8,6 +8,7 @@ let package = Package(
         .package(url: "https://github.com/madmachineio/SwiftIO.git", branch: "main"),
         .package(url: "https://github.com/madmachineio/MadBoards.git", branch: "main"),
         .package(url: "https://github.com/madmachineio/MadDrivers.git", branch: "main"),
+        .package(url: "https://github.com/madmachineio/CFreeType.git", from: "2.13.2"),
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.
@@ -18,10 +19,8 @@ let package = Package(
                 "SwiftIO",
                 "MadBoards",
                 // use specific library would speed up the compile procedure
-                .product(name: "IS31FL3731", package: "MadDrivers")
+                .product(name: "IS31FL3731", package: "MadDrivers"),
+                "CFreeType",
             ]),
-        .testTarget(
-            name: "ScrollingTextTests",
-            dependencies: ["ScrollingText"]),
     ]
 )

Examples/IS31FL3731/ScrollingText/TODO_Package.swift renamed to Examples/IS31FL3731/ScrollingText/Package.swift

@@ -2,15 +2,23 @@
 import SwiftIO
 import MadBoard
 import IS31FL3731
-import MadDisplay
+import MadGraphics
 
 let i2c = I2C(Id.I2C0)
-let led = IS31FL3731(i2c)
-let display = MadDisplay(screen: led)
-let group = Group()
+let screen = IS31FL3731(i2c)
 
-let text = Label(y: 4, text: "Hello", font: ASCII8())
-group.append(text)
+var screenBuffer = [UInt8](repeating: 0, count: screen.width * screen.height)
+var frameBuffer = [UInt32](repeating: 0, count: screen.width * screen.height)
+
+let robotoFont = Font(path: "/lfs/Resources/Fonts/RobotoMono-VariableFont_wght.ttf" , pointSize: 12)
+
+let rootLayer = Layer(width: screen.width, height: screen.height, backgroundColor: Pixel.black)
+rootLayer.render(into: &frameBuffer, output: &screenBuffer, transform: Pixel.toGray) { dirty, data in
+    screen.writeBitmap(x: dirty.x, y: dirty.y, width: dirty.width, height: dirty.height, data: data)
+}
+
+let text = TextLayer(at: Point(x: 0, y: 0), string: "Hello", font: robotoFont, foregroundColor: Pixel.white)
+rootLayer.append(text)
 
 // It is decided by the width of your text.
 let xmin = -24
@@ -20,10 +28,21 @@ let xmax = 16
 while true {
     // The text will scroll from right to left.
     for x in (xmin...xmax).reversed() {
-        text.setX(x)
-        display.update(group)
+        text.position = Point(x: x, y: 0)
+        rootLayer.render(into: &frameBuffer, output: &screenBuffer, transform: Pixel.toGray) { dirty, data in
+            screen.writeBitmap(x: dirty.x, y: dirty.y, width: dirty.width, height: dirty.height, data: data)
+        }
         sleep(ms: 100)
     }
 }
 
 
+extension Pixel {
+    static func toGray(_ pixel: UInt32) -> UInt8 {
+        let r = (pixel >> 16) & 0xFF
+        let g = (pixel >> 8) & 0xFF
+        let b = pixel & 0xFF
+        // Use the luminosity method to convert RGB to grayscale.
+        return UInt8(0.299 * Float(r) + 0.587 * Float(g) + 0.114 * Float(b))
+    }
+}