396 lines
17 KiB
Java
396 lines
17 KiB
Java
/*
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* Minecraft Forge
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* Copyright (c) 2016-2018.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation version 2.1
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* of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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package net.minecraftforge.fml.client.gui;
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import net.minecraft.client.Minecraft;
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import net.minecraft.client.gui.Gui;
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import net.minecraft.client.gui.GuiButton;
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import net.minecraft.client.gui.ScaledResolution;
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import net.minecraft.client.renderer.BufferBuilder;
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import net.minecraft.client.renderer.GlStateManager;
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import net.minecraft.client.renderer.Tessellator;
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import net.minecraft.client.renderer.vertex.DefaultVertexFormats;
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import net.minecraftforge.fml.client.config.GuiUtils;
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import org.lwjgl.input.Mouse;
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import org.lwjgl.opengl.GL11;
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import java.io.IOException;
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import java.util.List;
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public abstract class GuiScrollingList
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{
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private final Minecraft client;
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protected final int listWidth;
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protected final int listHeight;
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protected final int screenWidth;
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protected final int screenHeight;
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protected final int top;
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protected final int bottom;
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protected final int right;
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protected final int left;
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protected final int slotHeight;
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private int scrollUpActionId;
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private int scrollDownActionId;
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protected int mouseX;
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protected int mouseY;
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private float initialMouseClickY = -2.0F;
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private float scrollFactor;
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private float scrollDistance;
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protected int selectedIndex = -1;
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private long lastClickTime = 0L;
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private boolean highlightSelected = true;
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private boolean hasHeader;
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private int headerHeight;
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protected boolean captureMouse = true;
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@Deprecated // We need to know screen size.
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public GuiScrollingList(Minecraft client, int width, int height, int top, int bottom, int left, int entryHeight)
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{
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this(client, width, height, top, bottom, left, entryHeight, width, height);
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}
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public GuiScrollingList(Minecraft client, int width, int height, int top, int bottom, int left, int entryHeight, int screenWidth, int screenHeight)
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{
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this.client = client;
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this.listWidth = width;
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this.listHeight = height;
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this.top = top;
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this.bottom = bottom;
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this.slotHeight = entryHeight;
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this.left = left;
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this.right = width + this.left;
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this.screenWidth = screenWidth;
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this.screenHeight = screenHeight;
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}
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@Deprecated // Unused, remove in 1.9.3?
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public void func_27258_a(boolean p_27258_1_)
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{
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this.highlightSelected = p_27258_1_;
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}
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@Deprecated protected void func_27259_a(boolean hasFooter, int footerHeight){ setHeaderInfo(hasFooter, footerHeight); }
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protected void setHeaderInfo(boolean hasHeader, int headerHeight)
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{
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this.hasHeader = hasHeader;
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this.headerHeight = headerHeight;
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if (!hasHeader) this.headerHeight = 0;
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}
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protected abstract int getSize();
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protected abstract void elementClicked(int index, boolean doubleClick);
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protected abstract boolean isSelected(int index);
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protected int getContentHeight()
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{
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return this.getSize() * this.slotHeight + this.headerHeight;
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}
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protected abstract void drawBackground();
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/**
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* Draw anything special on the screen. GL_SCISSOR is enabled for anything that
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* is rendered outside of the view box. Do not mess with SCISSOR unless you support this.
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*/
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protected abstract void drawSlot(int slotIdx, int entryRight, int slotTop, int slotBuffer, Tessellator tess);
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@Deprecated protected void func_27260_a(int entryRight, int relativeY, Tessellator tess) {}
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/**
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* Draw anything special on the screen. GL_SCISSOR is enabled for anything that
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* is rendered outside of the view box. Do not mess with SCISSOR unless you support this.
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*/
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protected void drawHeader(int entryRight, int relativeY, Tessellator tess) { func_27260_a(entryRight, relativeY, tess); }
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@Deprecated protected void func_27255_a(int x, int y) {}
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protected void clickHeader(int x, int y) { func_27255_a(x, y); }
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@Deprecated protected void func_27257_b(int mouseX, int mouseY) {}
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/**
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* Draw anything special on the screen. GL_SCISSOR is enabled for anything that
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* is rendered outside of the view box. Do not mess with SCISSOR unless you support this.
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*/
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protected void drawScreen(int mouseX, int mouseY) { func_27257_b(mouseX, mouseY); }
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@Deprecated // Unused, Remove in 1.9.3?
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public int func_27256_c(int x, int y)
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{
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int left = this.left + 1;
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int right = this.left + this.listWidth - 7;
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int relativeY = y - this.top - this.headerHeight + (int)this.scrollDistance - 4;
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int entryIndex = relativeY / this.slotHeight;
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return x >= left && x <= right && entryIndex >= 0 && relativeY >= 0 && entryIndex < this.getSize() ? entryIndex : -1;
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}
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// FIXME: is this correct/still needed?
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public void registerScrollButtons(List<GuiButton> buttons, int upActionID, int downActionID)
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{
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this.scrollUpActionId = upActionID;
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this.scrollDownActionId = downActionID;
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}
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private void applyScrollLimits()
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{
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int listHeight = this.getContentHeight() - (this.bottom - this.top - 4);
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if (listHeight < 0)
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{
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listHeight /= 2;
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}
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if (this.scrollDistance < 0.0F)
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{
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this.scrollDistance = 0.0F;
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}
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if (this.scrollDistance > (float)listHeight)
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{
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this.scrollDistance = (float)listHeight;
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}
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}
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public void actionPerformed(GuiButton button)
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{
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if (button.enabled)
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{
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if (button.id == this.scrollUpActionId)
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{
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this.scrollDistance -= (float)(this.slotHeight * 2 / 3);
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this.initialMouseClickY = -2.0F;
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this.applyScrollLimits();
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}
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else if (button.id == this.scrollDownActionId)
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{
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this.scrollDistance += (float)(this.slotHeight * 2 / 3);
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this.initialMouseClickY = -2.0F;
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this.applyScrollLimits();
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}
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}
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}
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public void handleMouseInput(int mouseX, int mouseY) throws IOException
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{
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boolean isHovering = mouseX >= this.left && mouseX <= this.left + this.listWidth &&
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mouseY >= this.top && mouseY <= this.bottom;
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if (!isHovering)
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return;
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int scroll = Mouse.getEventDWheel();
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if (scroll != 0)
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{
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this.scrollDistance += (float)((-1 * scroll / 120.0F) * this.slotHeight / 2);
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}
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}
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public void drawScreen(int mouseX, int mouseY, float partialTicks)
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{
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this.mouseX = mouseX;
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this.mouseY = mouseY;
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this.drawBackground();
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boolean isHovering = mouseX >= this.left && mouseX <= this.left + this.listWidth &&
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mouseY >= this.top && mouseY <= this.bottom;
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int listLength = this.getSize();
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int scrollBarWidth = 6;
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int scrollBarRight = this.left + this.listWidth;
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int scrollBarLeft = scrollBarRight - scrollBarWidth;
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int entryLeft = this.left;
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int entryRight = scrollBarLeft - 1;
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int viewHeight = this.bottom - this.top;
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int border = 4;
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if (Mouse.isButtonDown(0))
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{
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if (this.initialMouseClickY == -1.0F)
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{
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if (isHovering)
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{
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int mouseListY = mouseY - this.top - this.headerHeight + (int)this.scrollDistance - border;
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int slotIndex = mouseListY / this.slotHeight;
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if (mouseX >= entryLeft && mouseX <= entryRight && slotIndex >= 0 && mouseListY >= 0 && slotIndex < listLength)
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{
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this.elementClicked(slotIndex, slotIndex == this.selectedIndex && System.currentTimeMillis() - this.lastClickTime < 250L);
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this.selectedIndex = slotIndex;
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this.lastClickTime = System.currentTimeMillis();
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}
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else if (mouseX >= entryLeft && mouseX <= entryRight && mouseListY < 0)
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{
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this.clickHeader(mouseX - entryLeft, mouseY - this.top + (int)this.scrollDistance - border);
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}
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if (mouseX >= scrollBarLeft && mouseX <= scrollBarRight)
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{
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this.scrollFactor = -1.0F;
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int scrollHeight = this.getContentHeight() - viewHeight - border;
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if (scrollHeight < 1) scrollHeight = 1;
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int var13 = (int)((float)(viewHeight * viewHeight) / (float)this.getContentHeight());
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if (var13 < 32) var13 = 32;
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if (var13 > viewHeight - border*2)
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var13 = viewHeight - border*2;
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this.scrollFactor /= (float)(viewHeight - var13) / (float)scrollHeight;
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}
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else
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{
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this.scrollFactor = 1.0F;
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}
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this.initialMouseClickY = mouseY;
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}
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else
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{
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this.initialMouseClickY = -2.0F;
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}
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}
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else if (this.initialMouseClickY >= 0.0F)
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{
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this.scrollDistance -= ((float)mouseY - this.initialMouseClickY) * this.scrollFactor;
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this.initialMouseClickY = (float)mouseY;
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}
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}
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else
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{
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this.initialMouseClickY = -1.0F;
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}
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this.applyScrollLimits();
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Tessellator tess = Tessellator.getInstance();
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BufferBuilder worldr = tess.getBuffer();
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ScaledResolution res = new ScaledResolution(client);
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double scaleW = client.displayWidth / res.getScaledWidth_double();
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double scaleH = client.displayHeight / res.getScaledHeight_double();
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GL11.glEnable(GL11.GL_SCISSOR_TEST);
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GL11.glScissor((int)(left * scaleW), (int)(client.displayHeight - (bottom * scaleH)),
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(int)(listWidth * scaleW), (int)(viewHeight * scaleH));
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if (this.client.world != null)
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{
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this.drawGradientRect(this.left, this.top, this.right, this.bottom, 0xC0101010, 0xD0101010);
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}
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else // Draw dark dirt background
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{
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GlStateManager.disableLighting();
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GlStateManager.disableFog();
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this.client.renderEngine.bindTexture(Gui.OPTIONS_BACKGROUND);
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GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
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final float scale = 32.0F;
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worldr.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX_COLOR);
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worldr.pos(this.left, this.bottom, 0.0D).tex(this.left / scale, (this.bottom + (int)this.scrollDistance) / scale).color(0x20, 0x20, 0x20, 0xFF).endVertex();
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worldr.pos(this.right, this.bottom, 0.0D).tex(this.right / scale, (this.bottom + (int)this.scrollDistance) / scale).color(0x20, 0x20, 0x20, 0xFF).endVertex();
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worldr.pos(this.right, this.top, 0.0D).tex(this.right / scale, (this.top + (int)this.scrollDistance) / scale).color(0x20, 0x20, 0x20, 0xFF).endVertex();
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worldr.pos(this.left, this.top, 0.0D).tex(this.left / scale, (this.top + (int)this.scrollDistance) / scale).color(0x20, 0x20, 0x20, 0xFF).endVertex();
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tess.draw();
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}
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int baseY = this.top + border - (int)this.scrollDistance;
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if (this.hasHeader) {
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this.drawHeader(entryRight, baseY, tess);
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}
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for (int slotIdx = 0; slotIdx < listLength; ++slotIdx)
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{
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int slotTop = baseY + slotIdx * this.slotHeight + this.headerHeight;
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int slotBuffer = this.slotHeight - border;
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if (slotTop <= this.bottom && slotTop + slotBuffer >= this.top)
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{
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if (this.highlightSelected && this.isSelected(slotIdx))
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{
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int min = this.left;
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int max = entryRight;
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GlStateManager.color(1.0F, 1.0F, 1.0F, 1.0F);
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GlStateManager.disableTexture2D();
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worldr.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX_COLOR);
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worldr.pos(min, slotTop + slotBuffer + 2, 0).tex(0, 1).color(0x80, 0x80, 0x80, 0xFF).endVertex();
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worldr.pos(max, slotTop + slotBuffer + 2, 0).tex(1, 1).color(0x80, 0x80, 0x80, 0xFF).endVertex();
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worldr.pos(max, slotTop - 2, 0).tex(1, 0).color(0x80, 0x80, 0x80, 0xFF).endVertex();
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worldr.pos(min, slotTop - 2, 0).tex(0, 0).color(0x80, 0x80, 0x80, 0xFF).endVertex();
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worldr.pos(min + 1, slotTop + slotBuffer + 1, 0).tex(0, 1).color(0x00, 0x00, 0x00, 0xFF).endVertex();
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worldr.pos(max - 1, slotTop + slotBuffer + 1, 0).tex(1, 1).color(0x00, 0x00, 0x00, 0xFF).endVertex();
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worldr.pos(max - 1, slotTop - 1, 0).tex(1, 0).color(0x00, 0x00, 0x00, 0xFF).endVertex();
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worldr.pos(min + 1, slotTop - 1, 0).tex(0, 0).color(0x00, 0x00, 0x00, 0xFF).endVertex();
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tess.draw();
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GlStateManager.enableTexture2D();
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}
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this.drawSlot(slotIdx, entryRight, slotTop, slotBuffer, tess);
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}
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}
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GlStateManager.disableDepth();
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int extraHeight = (this.getContentHeight() + border) - viewHeight;
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if (extraHeight > 0)
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{
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int height = (viewHeight * viewHeight) / this.getContentHeight();
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if (height < 32) height = 32;
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if (height > viewHeight - border*2)
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height = viewHeight - border*2;
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int barTop = (int)this.scrollDistance * (viewHeight - height) / extraHeight + this.top;
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if (barTop < this.top)
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{
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barTop = this.top;
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}
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GlStateManager.disableTexture2D();
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worldr.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX_COLOR);
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worldr.pos(scrollBarLeft, this.bottom, 0.0D).tex(0.0D, 1.0D).color(0x00, 0x00, 0x00, 0xFF).endVertex();
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worldr.pos(scrollBarRight, this.bottom, 0.0D).tex(1.0D, 1.0D).color(0x00, 0x00, 0x00, 0xFF).endVertex();
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worldr.pos(scrollBarRight, this.top, 0.0D).tex(1.0D, 0.0D).color(0x00, 0x00, 0x00, 0xFF).endVertex();
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worldr.pos(scrollBarLeft, this.top, 0.0D).tex(0.0D, 0.0D).color(0x00, 0x00, 0x00, 0xFF).endVertex();
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tess.draw();
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worldr.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX_COLOR);
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worldr.pos(scrollBarLeft, barTop + height, 0.0D).tex(0.0D, 1.0D).color(0x80, 0x80, 0x80, 0xFF).endVertex();
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worldr.pos(scrollBarRight, barTop + height, 0.0D).tex(1.0D, 1.0D).color(0x80, 0x80, 0x80, 0xFF).endVertex();
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worldr.pos(scrollBarRight, barTop, 0.0D).tex(1.0D, 0.0D).color(0x80, 0x80, 0x80, 0xFF).endVertex();
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worldr.pos(scrollBarLeft, barTop, 0.0D).tex(0.0D, 0.0D).color(0x80, 0x80, 0x80, 0xFF).endVertex();
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tess.draw();
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worldr.begin(GL11.GL_QUADS, DefaultVertexFormats.POSITION_TEX_COLOR);
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worldr.pos(scrollBarLeft, barTop + height - 1, 0.0D).tex(0.0D, 1.0D).color(0xC0, 0xC0, 0xC0, 0xFF).endVertex();
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worldr.pos(scrollBarRight - 1, barTop + height - 1, 0.0D).tex(1.0D, 1.0D).color(0xC0, 0xC0, 0xC0, 0xFF).endVertex();
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worldr.pos(scrollBarRight - 1, barTop, 0.0D).tex(1.0D, 0.0D).color(0xC0, 0xC0, 0xC0, 0xFF).endVertex();
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worldr.pos(scrollBarLeft, barTop, 0.0D).tex(0.0D, 0.0D).color(0xC0, 0xC0, 0xC0, 0xFF).endVertex();
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tess.draw();
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}
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this.drawScreen(mouseX, mouseY);
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GlStateManager.enableTexture2D();
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GlStateManager.shadeModel(GL11.GL_FLAT);
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GlStateManager.enableAlpha();
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GlStateManager.disableBlend();
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GL11.glDisable(GL11.GL_SCISSOR_TEST);
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}
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protected void drawGradientRect(int left, int top, int right, int bottom, int color1, int color2)
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{
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GuiUtils.drawGradientRect(0, left, top, right, bottom, color1, color2);
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}
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}
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