initial commit

source/Background/IBackground.mc

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+import Toybox.Graphics;
+import Toybox.Lang;
+import Toybox.WatchUi;
+
+class IBackground extends Drawable {
+
+    var Marks as Array<IMark> = [];
+
+    typedef BackgroundParams as {
+        :Identifier as Object,
+    };
+
+    enum BackgroundStyleType {
+        SOLID_BACKGROUND,
+    }
+
+    static function getBackground(style as BackgroundStyleType) as IBackground {
+        switch (style) {
+            case SOLID_BACKGROUND:
+            default:
+                return new SolidBackground({});
+        }
+    }
+
+    function initialize(options as BackgroundParams) {
+        Drawable.initialize({:identifier => options[:Identifier]});
+
+        for (var s = 0; s < 60; s += 5) {
+            var mark = IMark.getMark(IMark.DOUBLE_LINE_MARK, {:Seconds => s});
+            if (mark != null) {
+                Marks.add(mark);
+            }
+        }
+    }
+
+    function draw(dc as Dc) as Void {
+        drawBackground(dc);
+        for (var i = 0; i < Marks.size(); ++i) {
+            Marks[i].draw(dc);
+        }
+    }
+
+    function drawBackground(dc as Dc) as Void {}
+}

source/Background/Marks/DoubleLineMark.mc

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+import Toybox.Graphics;
+import Toybox.Lang;
+import Toybox.WatchUi;
+
+class DoubleLineMark extends IMark {
+
+    var InnerRadius as Float = 0.9;
+    var Offset as Float = Math.toRadians(1.0);
+
+    function initialize(options as IMark.MarkParams) {
+        IMark.initialize(options);
+    }
+
+    function drawMark(dc as Dc, x as Float, y as Float, length as Float) as Void {
+        var angle = Math.toRadians(Seconds * 6.0 - 90);
+
+        dc.setColor(Color, Color);
+        dc.drawLine(x + length * InnerRadius * Math.cos(angle - Offset), y + length * InnerRadius * Math.sin(angle - Offset), 
+                    x + length * Radius * Math.cos(angle - Offset), y + length * Radius * Math.sin(angle - Offset));
+        dc.drawLine(x + length * InnerRadius * Math.cos(angle + Offset), y + length * InnerRadius * Math.sin(angle + Offset), 
+                    x + length * Radius * Math.cos(angle + Offset), y + length * Radius * Math.sin(angle + Offset));
+    }
+}

source/Background/Marks/IMark.mc

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+import Toybox.Graphics;
+import Toybox.Lang;
+import Toybox.WatchUi;
+
+class IMark extends Drawable {
+
+    var CenterShift as [Float, Float];
+    var Color as ColorType;
+    var Radius as Float;
+    var Seconds as Number;
+
+    typedef MarkParams as {
+        :Identifier as Object,
+        :Seconds as Number,
+        :Color as ColorType,
+        :HandsParams as IHands.HandsParams,
+    };
+
+    enum MarkType {
+        START_MARK,
+        PRIMARY_MARK,
+        SECONDARY_MARK,
+        TERTIARY_MARK,
+    }
+
+    enum MarkStyleType {
+        LINE_MARK,
+        DOUBLE_LINE_MARK,
+        DOT_MARK,
+        ARABIC_MARK,
+        ROMAN_MARK,
+        EMPTY_MARK,
+    }
+
+    static function getMark(style as MarkStyleType, options as MarkParams) as IMark? {
+        switch (style) {
+            case LINE_MARK:
+                return new LineMark(options);
+            case DOUBLE_LINE_MARK:
+                return new DoubleLineMark(options);
+            case EMPTY_MARK:
+            default:
+                return null;
+        }
+    }
+
+    function initialize(options as MarkParams) {
+        Drawable.initialize({:identifier => options[:Identifier]});
+
+        CenterShift = getOrElse(getOrElse(options[:HandsParams], {})[:CenterShift], [0.0, 0.0]);
+        Color = getOrElse(options[:Color], Graphics.COLOR_WHITE);
+        Radius = getOrElse(options[:Radius], 1.0);
+        Seconds = options[:Seconds];
+    }
+
+    function draw(dc as Dc) as Void {
+        var center = getCenter(dc, CenterShift);
+        var length = min(center[0], center[1]);
+        drawMark(dc, center[0], center[1], length);
+    }
+
+    function drawMark(dc as Dc, x as Float, y as Float, length as Float) as Void {}
+
+    function getMarkType() as MarkType {
+        switch (Seconds) {
+            case 0:
+                return START_MARK;
+            case 15:
+            case 30:
+            case 45:
+                return PRIMARY_MARK;
+            case 5:
+            case 10:
+            case 20:
+            case 25:
+            case 35:
+            case 40:
+            case 50:
+            case 55:
+                return SECONDARY_MARK;
+            default:
+                return TERTIARY_MARK;
+        }
+    }
+}

source/Background/Marks/LineMark.mc

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+import Toybox.Graphics;
+import Toybox.Lang;
+import Toybox.WatchUi;
+
+class LineMark extends IMark {
+
+    var InnerRadius as Float = 0.9;
+
+    function initialize(options as IMark.MarkParams) {
+        IMark.initialize(options);
+    }
+
+    function drawMark(dc as Dc, x as Float, y as Float, length as Float) as Void {
+        var angle = Math.toRadians(Seconds * 6.0 - 90);
+
+        dc.setColor(Color, Color);
+        dc.drawLine(x + length * InnerRadius * Math.cos(angle), y + length * InnerRadius * Math.sin(angle), 
+                    x + length * Radius * Math.cos(angle), y + length * Radius * Math.sin(angle));
+    }
+}

source/Background/SolidBackground.mc

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+import Toybox.Graphics;
+import Toybox.Lang;
+import Toybox.WatchUi;
+
+class SolidBackground extends IBackground {
+
+    var Color as ColorType;
+
+    typedef SolidBackgroundParams as {
+        :BackgroundParams as IBackground.BackgroundParams,
+        :Color as ColorType,
+    };
+
+    function initialize(options as SolidBackgroundParams) {
+        IBackground.initialize(getOrElse(options[:BackgroundParams], {}));
+
+        Color = getOrElse(options[:Color], Graphics.COLOR_BLACK);
+    }
+
+    function drawBackground(dc as Dc) as Void {
+        dc.setColor(Graphics.COLOR_TRANSPARENT, Color);
+        dc.clear();
+    }
+}