src/main/java/com/irtimaled/bbor/client/gui/ControlList.java

   1 package com.irtimaled.bbor.client.gui;
   2
   3 import com.irtimaled.bbor.client.renderers.Renderer;
   4 import net.minecraft.client.Minecraft;
   5 import net.minecraft.client.gui.Gui;
   6 import net.minecraft.client.gui.GuiEventHandler;
   7 import net.minecraft.client.gui.IGuiEventListener;
   8 import net.minecraft.client.renderer.OpenGlHelper;
   9 import net.minecraft.util.math.MathHelper;
  10 import org.lwjgl.opengl.GL11;
  11
  12 import java.util.ArrayList;
  13 import java.util.Collections;
  14 import java.util.List;
  15
  16 public class ControlList extends GuiEventHandler {
  17     private static final int CONTROLS_WIDTH = 310;
  18     private final int scrollBarLeft;
  19     private final int listHeight;
  20     private final int listLeft;
  21     private final int listRight;
  22     private final Minecraft minecraft;
  23     private final List<ControlListEntry> entries = new ArrayList<>();
  24     private final int width;
  25     private final int height;
  26     private final int top;
  27     private final int bottom;
  28
  29     private int contentHeight = 8;
  30     private int selectedElement;
  31     private double amountScrolled;
  32     private boolean clickedScrollbar;
  33     private boolean showSelectionBox;
  34     private boolean transparentBackground;
  35
  36     ControlList(int width, int height, int top, int bottom) {
  37         this.minecraft = Minecraft.getInstance();
  38         this.width = width;
  39         this.scrollBarLeft = width - 6;
  40         this.height = height;
  41         this.top = top;
  42         this.bottom = bottom;
  43         this.listHeight = bottom - top;
  44         this.listLeft = width / 2 - CONTROLS_WIDTH / 2;
  45         this.listRight = this.listLeft + CONTROLS_WIDTH;
  46         this.selectedElement = -1;
  47     }
  48
  49     void add(ControlListEntry entry) {
  50         entry.list = this;
  51         entry.index = entries.size();
  52         addEntry(entry);
  53     }
  54
  55     private void addEntry(ControlListEntry entry) {
  56         this.entries.add(entry);
  57         this.contentHeight += entry.getControlHeight();
  58     }
  59
  60     ControlListEntry getSelectedEntry() {
  61         return this.selectedElement >= 0 && this.selectedElement < this.entries.size() ? this.entries.get(this.selectedElement) : null;
  62     }
  63
  64     void filter(String lowerValue) {
  65         int height = 0;
  66         for (IControl entry : entries) {
  67             entry.filter(lowerValue);
  68             if (entry.getVisible())
  69                 height += entry.getControlHeight();
  70         }
  71         this.contentHeight = height + 8;
  72     }
  73
  74     void close() {
  75         this.entries.forEach(ControlListEntry::close);
  76     }
  77
  78     @Override
  79     public boolean mouseClicked(double mouseX, double mouseY, int button) {
  80         this.clickedScrollbar = button == 0 && mouseX >= (double) this.scrollBarLeft;
  81         if (mouseY >= (double) this.top && mouseY <= (double) this.bottom) {
  82             ControlListEntry entry = this.getEntryAt(mouseX, mouseY);
  83             if (entry != null && entry.mouseClicked(mouseX, mouseY, button)) {
  84                 this.setDragging(true);
  85                 this.setSelectedIndex(entry.index);
  86                 return true;
  87             } else {
  88                 return this.clickedScrollbar;
  89             }
  90         } else {
  91             return false;
  92         }
  93     }
  94
  95     void setSelectedIndex(int index) {
  96         this.selectedElement = index;
  97     }
  98
  99     private ControlListEntry getEntryAt(double mouseX, double mouseY) {
 100         if (mouseX >= listLeft && mouseX <= listRight) {
 101             for (ControlListEntry entry : entries) {
 102                 if (!entry.getVisible()) continue;
 103
 104                 int top = entry.getY();
 105                 int bottom = top + entry.getControlHeight();
 106                 if (mouseY >= top && mouseY <= bottom)
 107                     return entry;
 108             }
 109         }
 110         return null;
 111     }
 112
 113     @Override
 114     public boolean mouseDragged(double mouseX, double mouseY, int button, double p_mouseDragged_6_, double p_mouseDragged_8_) {
 115         if (super.mouseDragged(mouseX, mouseY, button, p_mouseDragged_6_, p_mouseDragged_8_)) {
 116             return true;
 117         } else if (button == 0 && this.clickedScrollbar) {
 118             if (mouseY < (double) this.top) {
 119                 this.amountScrolled = 0.0D;
 120             } else if (mouseY > (double) this.bottom) {
 121                 this.amountScrolled = this.getMaxScroll();
 122             } else {
 123                 double maxScroll = this.getMaxScroll();
 124                 if (maxScroll < 1.0D) {
 125                     maxScroll = 1.0D;
 126                 }
 127
 128                 double amountScrolled = maxScroll / (double) (this.listHeight - getScrollBarHeight());
 129                 if (amountScrolled < 1.0D) {
 130                     amountScrolled = 1.0D;
 131                 }
 132
 133                 this.amountScrolled += p_mouseDragged_8_ * amountScrolled;
 134             }
 135
 136             return true;
 137         } else {
 138             return false;
 139         }
 140     }
 141
 142     private int getMaxScroll() {
 143         return Math.max(0, this.contentHeight - (this.listHeight - 4));
 144     }
 145
 146     private int getScrollBarHeight() {
 147         return MathHelper.clamp((int) ((float) (this.listHeight * this.listHeight) / (float) this.contentHeight),
 148                 32,
 149                 this.listHeight - 8);
 150     }
 151
 152     @Override
 153     public boolean mouseReleased(double mouseX, double mouseY, int button) {
 154         this.entries.forEach(entry -> entry.mouseReleased(mouseX, mouseY, button));
 155         return false;
 156     }
 157
 158     @Override
 159     public boolean mouseScrolled(double scrollAmount) {
 160         this.amountScrolled -= scrollAmount * 10;
 161         return true;
 162     }
 163
 164     public void render(int mouseX, int mouseY) {
 165         this.amountScrolled = MathHelper.clamp(this.amountScrolled, 0.0D, this.getMaxScroll());
 166
 167         GL11.glDisable(GL11.GL_LIGHTING);
 168         GL11.glDisable(GL11.GL_FOG);
 169         if (!transparentBackground) drawListBackground();
 170
 171         int listTop = this.top + 8 - (int) this.amountScrolled;
 172
 173         drawEntries(mouseX, mouseY, listTop);
 174
 175         GL11.glDisable(GL11.GL_DEPTH_TEST);
 176         this.overlayBackground(0, this.top);
 177         this.overlayBackground(this.bottom, this.height);
 178         GL11.glEnable(GL11.GL_BLEND);
 179         OpenGlHelper.glBlendFuncSeparate(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA, GL11.GL_ZERO, GL11.GL_ONE);
 180         GL11.glDisable(GL11.GL_ALPHA_TEST);
 181         GL11.glShadeModel(GL11.GL_SMOOTH);
 182         GL11.glDisable(GL11.GL_TEXTURE_2D);
 183         drawOverlayShadows();
 184
 185         int maxScroll = this.getMaxScroll();
 186         if (maxScroll > 0) {
 187             drawScrollBar(maxScroll);
 188         }
 189
 190         GL11.glEnable(GL11.GL_TEXTURE_2D);
 191         GL11.glShadeModel(GL11.GL_FLAT);
 192         GL11.glEnable(GL11.GL_ALPHA_TEST);
 193         GL11.glDisable(GL11.GL_BLEND);
 194     }
 195
 196     private void drawListBackground() {
 197         this.minecraft.getTextureManager().bindTexture(Gui.OPTIONS_BACKGROUND);
 198         Renderer.startTextured()
 199                 .setColor(32, 32, 32)
 200                 .setAlpha(255)
 201                 .addPoint(0, this.bottom, 0.0D, (float) 0 / 32.0F, (float) (this.bottom + (int) this.amountScrolled) / 32.0F)
 202                 .addPoint(this.width, this.bottom, 0.0D, (float) this.width / 32.0F, (float) (this.bottom + (int) this.amountScrolled) / 32.0F)
 203                 .addPoint(this.width, this.top, 0.0D, (float) this.width / 32.0F, (float) (this.top + (int) this.amountScrolled) / 32.0F)
 204                 .addPoint(0, this.top, 0.0D, (float) 0 / 32.0F, (float) (this.top + (int) this.amountScrolled) / 32.0F)
 205                 .render();
 206     }
 207
 208     private void drawEntries(int mouseX, int mouseY, int top) {
 209         for (ControlListEntry entry : this.entries) {
 210             if (!entry.getVisible()) continue;
 211
 212             entry.setX(this.listLeft);
 213             entry.setY(top);
 214
 215             int height = entry.getControlHeight();
 216
 217             if (this.showSelectionBox && this.selectedElement == entry.index) {
 218                 GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
 219                 GL11.glDisable(GL11.GL_TEXTURE_2D);
 220                 Renderer.startTextured()
 221                         .setAlpha(255)
 222                         .setColor(128, 128, 128)
 223                         .addPoint((double) this.listLeft - 2, (double) (top + height) - 2, 0.0D, 0.0D, 1.0D)
 224                         .addPoint((double) this.listRight + 2, (double) (top + height) - 2, 0.0D, 1.0D, 1.0D)
 225                         .addPoint((double) this.listRight + 2, top - 2, 0.0D, 1.0D, 0.0D)
 226                         .addPoint((double) this.listLeft - 2, top - 2, 0.0D, 0.0D, 0.0D)
 227                         .setColor(0, 0, 0)
 228                         .addPoint(this.listLeft - 1, (double) (top + height) - 3, 0.0D, 0.0D, 1.0D)
 229                         .addPoint(this.listRight + 1, (double) (top + height) - 3, 0.0D, 1.0D, 1.0D)
 230                         .addPoint(this.listRight + 1, top - 1, 0.0D, 1.0D, 0.0D)
 231                         .addPoint(this.listLeft - 1, top - 1, 0.0D, 0.0D, 0.0D)
 232                         .render();
 233                 GL11.glEnable(GL11.GL_TEXTURE_2D);
 234             }
 235
 236             entry.render(mouseX, mouseY);
 237             top += entry.getControlHeight();
 238         }
 239     }
 240
 241     private void overlayBackground(int top, int bottom) {
 242         this.minecraft.getTextureManager().bindTexture(Gui.OPTIONS_BACKGROUND);
 243         GL11.glColor4f(1.0F, 1.0F, 1.0F, 1.0F);
 244         Renderer.startTextured()
 245                 .setColor(64, 64, 64)
 246                 .setAlpha(255)
 247                 .addPoint(0, bottom, 0.0D, 0.0D, (float) bottom / 32.0F)
 248                 .addPoint(this.width, bottom, 0.0D, (float) this.width / 32.0F, (float) bottom / 32.0F)
 249                 .addPoint(this.width, top, 0.0D, (float) this.width / 32.0F, (float) top / 32.0F)
 250                 .addPoint(0, top, 0.0D, 0.0D, (float) top / 32.0F)
 251                 .render();
 252     }
 253
 254     private void drawScrollBar(int maxScroll) {
 255         int scrollBarHeight = this.getScrollBarHeight();
 256         int scrollBarTop = (int) this.amountScrolled * (this.listHeight - scrollBarHeight) / maxScroll + this.top;
 257         if (scrollBarTop < this.top) {
 258             scrollBarTop = this.top;
 259         }
 260
 261         Renderer.startTextured()
 262                 .setAlpha(255)
 263                 .addPoint(this.scrollBarLeft, this.bottom, 0.0D, 0.0D, 1.0D)
 264                 .addPoint(this.width, this.bottom, 0.0D, 1.0D, 1.0D)
 265                 .addPoint(this.width, this.top, 0.0D, 1.0D, 0.0D)
 266                 .addPoint(this.scrollBarLeft, this.top, 0.0D, 0.0D, 0.0D)
 267                 .render();
 268
 269         Renderer.startTextured()
 270                 .setColor(128, 128, 128)
 271                 .setAlpha(255)
 272                 .addPoint(this.scrollBarLeft, scrollBarTop + scrollBarHeight, 0.0D, 0.0D, 1.0D)
 273                 .addPoint(this.width, scrollBarTop + scrollBarHeight, 0.0D, 1.0D, 1.0D)
 274                 .addPoint(this.width, scrollBarTop, 0.0D, 1.0D, 0.0D)
 275                 .addPoint(this.scrollBarLeft, scrollBarTop, 0.0D, 0.0D, 0.0D)
 276                 .render();
 277
 278         Renderer.startTextured()
 279                 .setColor(192, 192, 192)
 280                 .setAlpha(255)
 281                 .addPoint(this.scrollBarLeft, scrollBarTop + scrollBarHeight - 1, 0.0D, 0.0D, 1.0D)
 282                 .addPoint(this.width - 1, scrollBarTop + scrollBarHeight - 1, 0.0D, 1.0D, 1.0D)
 283                 .addPoint(this.width - 1, scrollBarTop, 0.0D, 1.0D, 0.0D)
 284                 .addPoint(this.scrollBarLeft, scrollBarTop, 0.0D, 0.0D, 0.0D)
 285                 .render();
 286     }
 287
 288     private void drawOverlayShadows() {
 289         Renderer.startTextured()
 290                 .addPoint(0, this.top + 4, 0.0D, 0.0D, 1.0D)
 291                 .addPoint(this.width, this.top + 4, 0.0D, 1.0D, 1.0D)
 292                 .setAlpha(255)
 293                 .addPoint(this.width, this.top, 0.0D, 1.0D, 0.0D)
 294                 .addPoint(0, this.top, 0.0D, 0.0D, 0.0D)
 295                 .render();
 296         Renderer.startTextured()
 297                 .addPoint(this.width, this.bottom - 4, 0.0D, 1.0D, 0.0D)
 298                 .addPoint(0, this.bottom - 4, 0.0D, 0.0D, 0.0D)
 299                 .setAlpha(255)
 300                 .addPoint(0, this.bottom, 0.0D, 0.0D, 1.0D)
 301                 .addPoint(this.width, this.bottom, 0.0D, 1.0D, 1.0D)
 302                 .render();
 303     }
 304
 305     @Override
 306     protected List<? extends IGuiEventListener> getChildren() {
 307         return Collections.emptyList();
 308     }
 309
 310     ControlList section(String title, CreateControl... createControls) {
 311         this.add(new ControlListSection(title, createControls));
 312         return this;
 313     }
 314
 315     void showSelectionBox() {
 316         this.showSelectionBox = true;
 317     }
 318
 319     void setTransparentBackground() {
 320         this.transparentBackground = true;
 321     }
 322 }