    001    package net.minecraft.client.gui;
    002
    003    import cpw.mods.fml.relauncher.Side;
    004    import cpw.mods.fml.relauncher.SideOnly;
    005    import java.net.URI;
    006    import net.minecraft.client.settings.GameSettings;
    007    import net.minecraft.util.StatCollector;
    008    import org.lwjgl.input.Keyboard;
    009    import org.lwjgl.opengl.GL11;
    010
    011    @SideOnly(Side.CLIENT)
    012    public class GuiScreenDemo extends GuiScreen
    013    {
    014        /**
    015         * Adds the buttons (and other controls) to the screen in question.
    016         */
    017        public void initGui()
    018        {
    019            this.controlList.clear();
    020            byte var1 = -16;
    021            this.controlList.add(new GuiButton(1, this.width / 2 - 116, this.height / 2 + 62 + var1, 114, 20, StatCollector.translateToLocal("demo.help.buy")));
    022            this.controlList.add(new GuiButton(2, this.width / 2 + 2, this.height / 2 + 62 + var1, 114, 20, StatCollector.translateToLocal("demo.help.later")));
    023        }
    024
    025        /**
    026         * Fired when a control is clicked. This is the equivalent of ActionListener.actionPerformed(ActionEvent e).
    027         */
    028        protected void actionPerformed(GuiButton par1GuiButton)
    029        {
    030            switch (par1GuiButton.id)
    031            {
    032                case 1:
    033                    par1GuiButton.enabled = false;
    034
    035                    try
    036                    {
    037                        Class var2 = Class.forName("java.awt.Desktop");
    038                        Object var3 = var2.getMethod("getDesktop", new Class[0]).invoke((Object)null, new Object[0]);
    039                        var2.getMethod("browse", new Class[] {URI.class}).invoke(var3, new Object[] {new URI("http://www.minecraft.net/store?source=demo")});
    040                    }
    041                    catch (Throwable var4)
    042                    {
    043                        var4.printStackTrace();
    044                    }
    045
    046                    break;
    047                case 2:
    048                    this.mc.displayGuiScreen((GuiScreen)null);
    049                    this.mc.setIngameFocus();
    050            }
    051        }
    052
    053        /**
    054         * Called from the main game loop to update the screen.
    055         */
    056        public void updateScreen()
    057        {
    058            super.updateScreen();
    059        }
    060
    061        /**
    062         * Draws either a gradient over the background screen (when it exists) or a flat gradient over background.png
    063         */
    064        public void drawDefaultBackground()
    065        {
    066            super.drawDefaultBackground();
    067            int var1 = this.mc.renderEngine.getTexture("/gui/demo_bg.png");
    068            GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
    069            this.mc.renderEngine.bindTexture(var1);
    070            int var2 = (this.width - 248) / 2;
    071            int var3 = (this.height - 166) / 2;
    072            this.drawTexturedModalRect(var2, var3, 0, 0, 248, 166);
    073        }
    074
    075        /**
    076         * Draws the screen and all the components in it.
    077         */
    078        public void drawScreen(int par1, int par2, float par3)
    079        {
    080            this.drawDefaultBackground();
    081            int var4 = (this.width - 248) / 2 + 10;
    082            int var5 = (this.height - 166) / 2 + 8;
    083            this.fontRenderer.drawString(StatCollector.translateToLocal("demo.help.title"), var4, var5, 2039583);
    084            var5 += 12;
    085            GameSettings var7 = this.mc.gameSettings;
    086            String var6 = StatCollector.translateToLocal("demo.help.movementShort");
    087            var6 = String.format(var6, new Object[] {Keyboard.getKeyName(var7.keyBindForward.keyCode), Keyboard.getKeyName(var7.keyBindLeft.keyCode), Keyboard.getKeyName(var7.keyBindBack.keyCode), Keyboard.getKeyName(var7.keyBindRight.keyCode)});
    088            this.fontRenderer.drawString(var6, var4, var5, 5197647);
    089            var6 = StatCollector.translateToLocal("demo.help.movementMouse");
    090            this.fontRenderer.drawString(var6, var4, var5 + 12, 5197647);
    091            var6 = StatCollector.translateToLocal("demo.help.jump");
    092            var6 = String.format(var6, new Object[] {Keyboard.getKeyName(var7.keyBindJump.keyCode)});
    093            this.fontRenderer.drawString(var6, var4, var5 + 24, 5197647);
    094            var6 = StatCollector.translateToLocal("demo.help.inventory");
    095            var6 = String.format(var6, new Object[] {Keyboard.getKeyName(var7.keyBindInventory.keyCode)});
    096            this.fontRenderer.drawString(var6, var4, var5 + 36, 5197647);
    097            this.fontRenderer.drawSplitString(StatCollector.translateToLocal("demo.help.fullWrapped"), var4, var5 + 68, 218, 2039583);
    098            super.drawScreen(par1, par2, par3);
    099        }
    100    }