1 files changed, 77 insertions, 0 deletions
diff --git a/src/main/java/gregtech/api/gui/widgets/GT_GuiIcon.java b/src/main/java/gregtech/api/gui/widgets/GT_GuiIcon.java
new file mode 100644
index 0000000000..1c31462e62
--- /dev/null
+++ b/src/main/java/gregtech/api/gui/widgets/GT_GuiIcon.java
@@ -0,0 +1,77 @@
+package gregtech.api.gui.widgets;
+
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.util.ResourceLocation;
+
+public enum GT_GuiIcon {
+    BUTTON_NORMAL           (0, 0,     0),
+    BUTTON_DOWN             (0, 32,    0),
+    BUTTON_HIGHLIGHT        (0, 32*2,  0),
+    BUTTON_HIGHLIGHT_DOWN   (0, 32*3,  0),
+    BUTTON_DISABLED         (0, 32*4,  0),
+
+    DISABLE                 (0, 0,     32),
+    REDSTONE_OFF            (0, 32,    32),
+    REDSTONE_ON             (0, 32*2,  32),
+    CHECKMARK               (0, 32*3,  32),
+    CROSS                   (0, 32*4,  32),
+    WHITELIST               (0, 32*5,  32),
+    BLACKLIST               (0, 32*6,  32),
+
+    EXPORT                  (0, 0,     32*2),
+    IMPORT                  (0, 32,    32*2),
+    ALLOW_INPUT             (0, 32*2,  32*2),
+    BLOCK_INPUT             (0, 32*3,  32*2),
+
+    SLOT_DARKGRAY           (1, 176,0,18,18),
+    SLOT_GRAY               (1, 176,18,18,18);
+
+    private static final int T_SIZE = 256;
+    private static final ResourceLocation[] TEXTURES = {
+            new ResourceLocation("gregtech", "textures/gui/GuiButtons.png"),
+            new ResourceLocation("gregtech", "textures/gui/GuiCover.png")
+    };
+
+    public final int x, y, width, height;
+    public final GT_GuiIcon overlay;
+    private final int texID;
+
+    GT_GuiIcon(int texID, int x, int y, int width, int height, GT_GuiIcon overlay) {
+        this.x = x;
+        this.y = y;
+        this.width = width;
+        this.height = height;
+        this.overlay = overlay;
+        this.texID = texID;
+    }
+
+    GT_GuiIcon(int texID, int x, int y) {
+        this(texID, x, y,32,32,null);
+    }
+    GT_GuiIcon(int texID, int x, int y, int width, int height) {
+        this(texID, x, y, width, height,null);
+    }
+
+    public static void render(GT_GuiIcon icon, double x, double y, double width, double height, double zLevel, boolean doDraw) {
+        Tessellator tess = Tessellator.instance;
+        if (doDraw) {
+            Minecraft.getMinecraft().renderEngine.bindTexture(TEXTURES[icon.texID]);
+            tess.startDrawingQuads();
+        }
+        double minU = (double) icon.x / T_SIZE;
+        double maxU = (double) (icon.x + icon.width) / T_SIZE;
+        double minV = (double) icon.y / T_SIZE;
+        double maxV = (double) (icon.y + icon.height) / T_SIZE;
+        tess.addVertexWithUV(x, y + height, zLevel, minU, maxV);
+        tess.addVertexWithUV(x + width, y + height, zLevel, maxU, maxV);
+        tess.addVertexWithUV(x + width, y + 0, zLevel, maxU, minV);
+        tess.addVertexWithUV(x, y + 0, zLevel, minU, minV);
+
+        if (icon.overlay != null)
+            render(icon.overlay, x, y, width, height, zLevel, false);
+
+        if (doDraw)
+            tess.draw();
+    }
+}