/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package com.badlogic.gdx.backends.gwt;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Graphics;
import com.badlogic.gdx.Graphics.BufferFormat;
import com.badlogic.gdx.Graphics.DisplayMode;
import com.badlogic.gdx.Graphics.GraphicsType;
import com.badlogic.gdx.graphics.GL10;
import com.badlogic.gdx.graphics.GL11;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.GLCommon;
import com.badlogic.gdx.utils.GdxRuntimeException;
import com.google.gwt.canvas.client.Canvas;
import com.google.gwt.dom.client.CanvasElement;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.webgl.client.WebGLContextAttributes;
import com.google.gwt.webgl.client.WebGLRenderingContext;
public class GwtGraphics implements Graphics {
CanvasElement canvas;
WebGLRenderingContext context;
GL20 gl;
String extensions;
float fps = 0;
long lastTimeStamp = System.currentTimeMillis();
float deltaTime = 0;
float time = 0;
int frames;
GwtApplicationConfiguration config;
boolean inFullscreenMode = false;
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);
context = WebGLRenderingContext.getContext(canvas, attributes);
context.viewport(0, 0, config.width, config.height);
this.gl = config.useDebugGL ? new GwtGL20Debug(context) : new GwtGL20(context);
}
public WebGLRenderingContext getContext () {
return context;
}
@Override
public boolean isGL11Available () {
return false;
}
@Override
public boolean isGL20Available () {
return true;
}
@Override
public GLCommon getGLCommon () {
return gl;
}
@Override
public GL10 getGL10 () {
return null;
}
@Override
public GL11 getGL11 () {
return null;
}
@Override
public GL20 getGL20 () {
return gl;
}
@Override
public int getWidth () {
return canvas.getWidth();
}
@Override
public int getHeight () {
return canvas.getHeight();
}
@Override
public float getDeltaTime () {
return deltaTime;
}
@Override
public int getFramesPerSecond () {
return (int)fps;
}
@Override
public GraphicsType getType () {
return GraphicsType.WebGL;
}
@Override
public float getPpiX () {
return 96;
}
@Override
public float getPpiY () {
return 96;
}
@Override
public float getPpcX () {
return 96 / 2.54f;
}
@Override
public float getPpcY () {
return 96 / 2.54f;
}
@Override
public boolean supportsDisplayModeChange () {
return true;
}
@Override
public DisplayMode[] getDisplayModes () {
return new DisplayMode[] {new DisplayMode(getScreenWidthJSNI(), getScreenHeightJSNI(), 60, 8) {}};
}
private native int getScreenWidthJSNI () /*-{
return $wnd.screen.width;
}-*/;
private native int getScreenHeightJSNI () /*-{
return $wnd.screen.height;
}-*/;
private native boolean isFullscreenJSNI () /*-{
if("webkitIsFullScreen" in $doc) {
return $doc.webkitIsFullScreen;
}
if("mozFullScreen" in $doc) {
return $doc.mozFullScreen;
}
return false
}-*/;
private void fullscreenChanged () {
if (!isFullscreen()) {
canvas.setWidth(config.width);
canvas.setHeight(config.height);
}
}
private native boolean setFullscreenJSNI (GwtGraphics graphics, CanvasElement element) /*-{
if(element.webkitRequestFullScreen) {
element.width = $wnd.screen.width;
element.height = $wnd.screen.height;
element.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT);
$doc.addEventListener("webkitfullscreenchange", function() {
graphics.@com.badlogic.gdx.backends.gwt.GwtGraphics::fullscreenChanged()();
}, false);
return true;
}
if(element.mozRequestFullScreen) {
element.width = $wnd.screen.width;
element.height = $wnd.screen.height;
element.mozRequestFullScreen();
$doc.addEventListener("mozfullscreenchange", function() {
graphics.@com.badlogic.gdx.backends.gwt.GwtGraphics::fullscreenChanged()();
}, false);
return true;
}
return false;
}-*/;
private native void exitFullscreen () /*-{
if($doc.webkitExitFullscreen) $doc.webkitExitFullscreen();
if($doc.mozExitFullscreen) $doc.mozExitFullscreen();
}-*/;
@Override
public DisplayMode getDesktopDisplayMode () {
return new DisplayMode(getScreenWidthJSNI(), getScreenHeightJSNI(), 60, 8) {};
}
@Override
public boolean setDisplayMode (DisplayMode displayMode) {
if (displayMode.width != getScreenWidthJSNI() && displayMode.height != getScreenHeightJSNI()) return false;
return setFullscreenJSNI(this, canvas);
}
@Override
public boolean setDisplayMode (int width, int height, boolean fullscreen) {
if (fullscreen) {
if (width != getScreenWidthJSNI() && height != getScreenHeightJSNI()) return false;
return setFullscreenJSNI(this, canvas);
} else {
if (isFullscreenJSNI()) exitFullscreen();
canvas.setWidth(width);
canvas.setHeight(height);
return true;
}
}
@Override
public BufferFormat getBufferFormat () {
return new BufferFormat(8, 8, 8, 0, 16, config.stencil ? 8 : 0, 0, false);
}
@Override
public boolean supportsExtension (String extension) {
if (extensions == null) extensions = Gdx.gl.glGetString(GL10.GL_EXTENSIONS);
return extensions.contains(extension);
}
public void update () {
long currTimeStamp = System.currentTimeMillis();
deltaTime = (currTimeStamp - lastTimeStamp) / 1000.0f;
lastTimeStamp = currTimeStamp;
time += deltaTime;
frames++;
if (time > 1) {
this.fps = frames;
time = 0;
frames = 0;
}
}
@Override
public void setTitle (String title) {
}
@Override
public void setVSync (boolean vsync) {
}
@Override
public float getDensity () {
return 96.0f / 160;
}
@Override
public void setContinuousRendering (boolean isContinuous) {
}
@Override
public boolean isContinuousRendering () {
return false;
}
@Override
public void requestRendering () {
}
@Override
public float getRawDeltaTime () {
return getDeltaTime();
}
@Override
public boolean isFullscreen () {
return isFullscreenJSNI();
}
}