public GwtRenderingContext(Panel root, GwtAppConfiguration config)
throws ParallaxRuntimeException {
this.root = root;
root.clear();
Canvas canvasWidget = Canvas.createIfSupported();
if (canvasWidget == null) throw new ParallaxRuntimeException("Canvas not supported");
int width = root.getOffsetWidth();
int height = root.getOffsetHeight();
if (width == 0 || height == 0)
new ParallaxRuntimeException("Width or Height of the Panel is 0");
lastWidth = width;
lastHeight = height;
canvas = canvasWidget.getCanvasElement();
root.add(canvasWidget);
canvas.setWidth(width);
canvas.setHeight(height);
this.config = config;
WebGLContextAttributes attributes = WebGLContextAttributes.create();
attributes.setAntialias(config.antialiasing);
attributes.setStencil(config.stencil);
attributes.setAlpha(config.alpha);
attributes.setPremultipliedAlpha(config.premultipliedAlpha);
attributes.setPreserveDrawingBuffer(config.preserveDrawingBuffer);
context = WebGLRenderingContext.getContext(canvas, attributes);
context.viewport(0, 0, width, height);
gl = new GwtGL20(context);
renderer = new GLRenderer(gl, width, height);
input = new GwtInput(canvas);
addEventListeners();
Window.addResizeHandler(this);
}
public GwtGraphics(Panel root, GwtApplicationConfiguration config) {
Canvas canvasWidget = Canvas.createIfSupported();
if (canvasWidget == null) throw new GdxRuntimeException("Canvas not supported");
canvas = canvasWidget.getCanvasElement();
root.add(canvasWidget);
canvas.setWidth(config.width);
canvas.setHeight(config.height);
this.config = config;
WebGLContextAttributes attributes = WebGLContextAttributes.create();
attributes.setAntialias(config.antialiasing);
attributes.setStencil(config.stencil);
attributes.setAlpha(false);
attributes.setPremultipliedAlpha(false);
attributes.setPreserveDrawingBuffer(config.preserveDrawingBuffer);
context = WebGLRenderingContext.getContext(canvas, attributes);
context.viewport(0, 0, config.width, config.height);
this.gl = config.useDebugGL ? new GwtGL20Debug(context) : new GwtGL20(context);
}
@Override
public void glViewport(int x, int y, int width, int height) {
gl.viewport(x, y, width, height);
}
public GWTGraphics(final Panel panel, final LGame game, final GWTSetting cfg) {
super(game, new GWTGL20(), new Scale(cfg.scaleFactor));
this.config = cfg;
Document doc = Document.get();
this.dummyCanvas = doc.createCanvasElement();
this.dummyCtx = dummyCanvas.getContext2d();
Element root = panel.getElement();
this.rootElement = root;
measureElement = doc.createDivElement();
measureElement.getStyle().setVisibility(Style.Visibility.HIDDEN);
measureElement.getStyle().setPosition(Style.Position.ABSOLUTE);
measureElement.getStyle().setTop(-500, Unit.PX);
measureElement.getStyle().setOverflow(Style.Overflow.VISIBLE);
measureElement.getStyle().setWhiteSpace(Style.WhiteSpace.NOWRAP);
root.appendChild(measureElement);
mouseScale = config.scaleFactor / Loon.devicePixelRatio();
canvas = Document.get().createCanvasElement();
root.appendChild(canvas);
if (config.scaling()) {
setSize(
config.width_zoom > 0 ? config.width_zoom : root.getOffsetWidth(),
config.height_zoom > 0 ? config.height_zoom : root.getOffsetHeight());
} else {
setSize(
config.width > 0 ? config.width : root.getOffsetWidth(),
config.height > 0 ? config.height : root.getOffsetHeight());
}
WebGLContextAttributes attrs = WebGLContextAttributes.create();
attrs.setAntialias(config.antiAliasing);
attrs.setStencil(config.stencil);
attrs.setAlpha(config.transparentCanvas);
attrs.setPremultipliedAlpha(config.premultipliedAlpha);
attrs.setPreserveDrawingBuffer(config.preserveDrawingBuffer);
WebGLRenderingContext glc = WebGLRenderingContext.getContext(canvas, attrs);
if (glc == null) {
throw new RuntimeException("Unable to create GL context");
}
((GWTGL20) gl).init(glc);
if (config.scaling()) {
glc.viewport(0, 0, config.width_zoom, config.height_zoom);
} else {
glc.viewport(0, 0, config.width, config.height);
}
if (config.fullscreen) {
Window.addResizeHandler(
new ResizeHandler() {
@Override
public void onResize(ResizeEvent event) {
if (getScreenWidthJSNI() == event.getWidth()
&& getScreenHeightJSNI() == event.getHeight()) {
float width = LSystem.viewSize.width(), height = LSystem.viewSize.height();
experimentalScale =
Math.min(getScreenWidthJSNI() / width, getScreenHeightJSNI() / height);
int yOfs = (int) ((getScreenHeightJSNI() - height * experimentalScale) / 3.f);
int xOfs = (int) ((getScreenWidthJSNI() - width * experimentalScale) / 2.f);
rootElement.setAttribute(
"style",
"width:"
+ experimentalScale * width
+ "px; "
+ "height:"
+ experimentalScale * height
+ "px; "
+ "position:absolute; left:"
+ xOfs
+ "px; top:"
+ yOfs);
Document.get().getBody().addClassName("fullscreen");
} else {
experimentalScale = 1;
rootElement.removeAttribute("style");
Document.get().getBody().removeClassName("fullscreen");
}
}
});
}
Loon.self.addHandler(
new OrientationChangedHandler() {
@Override
public void onChanged(Orientation newOrientation) {
int width = Loon.self.getContainerWidth();
int height = Loon.self.getContainerHeight();
game.log().info("update screen size width :" + width + " height :" + height);
setSize(width, height);
}
});
}