module d3d;

import dlangui;
import dlangui.graphics.scene.scene3d;
import dlangui.graphics.scene.camera;
import dlangui.graphics.scene.mesh;
import dlangui.graphics.scene.material;

mixin APP_ENTRY_POINT;

/// entry point for dlangui based application
extern (C) int UIAppMain(string[] args) {
    // create window
    Window window = Platform.instance.createWindow("DlangUI example - 3D Application", null, WindowFlag.Resizable, 600, 500);

    static if (true) {
        VerticalLayout layout = new VerticalLayout();
        Button btn = new Button(null, "Button 1"d);
        btn.fontSize = 32;
        Button btn2 = new Button(null, "Button 2"d);
        btn2.fontSize = 32;
        layout.addChild(btn);
        layout.addChild(btn2);
        window.mainWidget = layout;
    } else {

        // create some widget to show in window
        //window.mainWidget = (new Button()).text("Hello, world!"d).margins(Rect(20,20,20,20));
        window.mainWidget = parseML(q{
            VerticalLayout {
                margins: 10
                padding: 10
                backgroundColor: "#C0E0E070" // semitransparent yellow background
                // red bold text with size = 150% of base style size and font face Arial
                TextWidget { text: "Hello World example for DlangUI"; textColor: "red"; fontSize: 150%; fontWeight: 800; fontFace: "Arial" }
                HorizontalLayout {
                    layoutWidth: fill
                    TextWidget { text: "Text 20%"; backgroundColor:"#80FF0000"; layoutWidth: 20% }
                    VerticalLayout {
                        layoutWidth: 30%
                        TextWidget { text: "Text 30%"; backgroundColor:"#80FF00FF" }
                        TextWidget { text: "Text 30%"; backgroundColor:"#8000FFFF" }
                        TextWidget { text: "Text 30%"; backgroundColor:"#8000FFFF" }
                    }
                    TextWidget { text: "Text 50%"; backgroundColor:"#80FFFF00"; layoutWidth: 50% }
                }
                // arrange controls as form - table with two columns
                TableLayout {
                    colCount: 2
                    TextWidget { text: "param 1" }
                    EditLine { id: edit1; text: "some text" }
                    TextWidget { text: "param 2" }
                    EditLine { id: edit2; text: "some text for param2" }
                    TextWidget { text: "some radio buttons" }
                    // arrange some radio buttons vertically
                    VerticalLayout {
                        RadioButton { id: rb1; text: "Item 1" }
                        RadioButton { id: rb2; text: "Item 2" }
                        RadioButton { id: rb3; text: "Item 3" }
                    }
                    TextWidget { text: "and checkboxes" }
                    // arrange some checkboxes horizontally
                    HorizontalLayout {
                        CheckBox { id: cb1; text: "checkbox 1" }
                        CheckBox { id: cb2; text: "checkbox 2" }
                    }
                }
                HorizontalLayout {
                    Button { id: btnOk; text: "Ok"; fontSize: 27px }
                    Button { id: btnCancel; text: "Cancel"; fontSize: 27px }
                }
                CanvasWidget {
                    id: canvas
                    minWidth: 500
                    minHeight: 300
                }
            }
        });

        auto canvas = window.mainWidget.childById!CanvasWidget("canvas");
        canvas.onDrawListener = delegate(CanvasWidget canvas, DrawBuf buf, Rect rc) {
                Log.w("canvas.onDrawListener clipRect=" ~ to!string(buf.clipRect));
                buf.fill(0xFFFFFF);
                int x = rc.left;
                int y = rc.top;
                buf.fillRect(Rect(x+20, y+20, x+150, y+200), 0x80FF80);
                buf.fillRect(Rect(x+90, y+80, x+250, y+250), 0x80FF80FF);
                canvas.font.drawText(buf, x + 40, y + 50, "fillRect()"d, 0xC080C0);
                buf.drawFrame(Rect(x + 400, y + 30, x + 550, y + 150), 0x204060, Rect(2,3,4,5), 0x80704020);
                canvas.font.drawText(buf, x + 400, y + 5, "drawFrame()"d, 0x208020);
                canvas.font.drawText(buf, x + 300, y + 100, "drawPixel()"d, 0x000080);
                for (int i = 0; i < 80; i++)
                    buf.drawPixel(x+300 + i * 4, y+140 + i * 3 % 100, 0xFF0000 + i * 2);
                canvas.font.drawText(buf, x + 200, y + 150, "drawLine()"d, 0x800020);
                for (int i = 0; i < 40; i+=3)
                    buf.drawLine(Point(x+200 + i * 4, y+190), Point(x+150 + i * 7, y+320 + i * 2), 0x008000 + i * 5);
            };
    }

    Scene3d scene = new Scene3d();
    Camera cam = new Camera();
    cam.translation = vec3(0, 0, -5);
    scene.activeCamera = cam;
    mat4 camMatrix = scene.viewProjectionMatrix;
    MeshPart part = new MeshPart();

    // show window
    window.show();

    // run message loop
    return Platform.instance.enterMessageLoop();
}