diff options
| -rw-r--r-- | src/main/java/io/github/cottonmc/cotton/gui/client/BackgroundPainter.java | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/main/java/io/github/cottonmc/cotton/gui/client/BackgroundPainter.java b/src/main/java/io/github/cottonmc/cotton/gui/client/BackgroundPainter.java index 8cf9d40..0cd7338 100644 --- a/src/main/java/io/github/cottonmc/cotton/gui/client/BackgroundPainter.java +++ b/src/main/java/io/github/cottonmc/cotton/gui/client/BackgroundPainter.java @@ -2,6 +2,7 @@ package io.github.cottonmc.cotton.gui.client; import io.github.cottonmc.cotton.gui.widget.WItemSlot; import io.github.cottonmc.cotton.gui.widget.WWidget; +import net.minecraft.util.Identifier; public interface BackgroundPainter { /** @@ -55,4 +56,112 @@ public interface BackgroundPainter { ScreenDrawing.drawGuiPanel(left-8, top-8, panel.getWidth()+16, panel.getHeight()+16, shadowColor, panelColor, hilightColor, 0xFF000000); }; } + + /** + * Utility method to call {@link NinePatch#NinePatch(Identifier)}. + * + * @param texture the background painter texture + * @return a new nine-patch background painter + */ + public static BackgroundPainter.NinePatch createNinePatch(Identifier texture) { + return new NinePatch(texture); + } + + /** + * Utility method to call {@link NinePatch#NinePatch(Identifier)} + * and set the padding of the nine-patch painter. + * + * @param texture the background painter texture + * @param padding the padding of the painter + * @return a new nine-patch background painter + */ + public static BackgroundPainter.NinePatch createNinePatch(Identifier texture, int padding) { + return new NinePatch(texture).setPadding(padding); + } + + /** + * The nine-patch background painter paints rectangles using a nine-patch texture. + * + * <p>Nine-patch textures are separated into nine sections: four corners, four edges and a center part. + * The edges and the center are stretched to fill the area between the corners. + * + * <p>{@code NinePatch} painters have a customizable padding that can be applied. + * For example, a GUI panel for a container block might have a padding of 8 pixels, like {@link BackgroundPainter#VANILLA}. + * You can set the padding using {@link NinePatch#setPadding(int)}. + */ + public static class NinePatch implements BackgroundPainter { + private final Identifier texture; + private final int cornerSize; + private final float cornerUv; + private int padding = 8; + + /** + * Creates a nine-patch background painter with 4 px corners and a 0.25 cornerUv (corner fraction of whole texture). + * + * @param texture the texture ID + */ + public NinePatch(Identifier texture) { + this(texture, 4, 0.25f); + } + + /** + * Creates a nine-patch background painter. + * + * @param texture the texture ID + * @param cornerSize the size of the corners on the screen + * @param cornerUv the fraction of the corners of the whole texture + */ + public NinePatch(Identifier texture, int cornerSize, float cornerUv) { + this.texture = texture; + this.cornerSize = cornerSize; + this.cornerUv = cornerUv; + } + + public int getPadding() { + return padding; + } + + public NinePatch setPadding(int padding) { + this.padding = padding; + return this; + } + + public Identifier getTexture() { + return texture; + } + + public int getCornerSize() { + return cornerSize; + } + + public float getCornerUv() { + return cornerUv; + } + + @Override + public void paintBackground(int left, int top, WWidget panel) { + int width = panel.getWidth() + 2 * padding; + int height = panel.getHeight() + 2 * padding; + left = left - padding; + top = top - padding; + int x1 = left + cornerSize; + int x2 = left + width - cornerSize; + int y1 = top + cornerSize; + int y2 = top + height - cornerSize; + float uv1 = cornerUv; + float uv2 = 1.0f - cornerUv; + + ScreenDrawing.texturedRect(left, top, cornerSize, cornerSize, texture, 0, 0, uv1, uv1, 0xFF_FFFFFF); + ScreenDrawing.texturedRect(x2, top, cornerSize, cornerSize, texture, uv2, 0, 1, uv1, 0xFF_FFFFFF); + ScreenDrawing.texturedRect(left, y2, cornerSize, cornerSize, texture, 0, uv2, uv1, 1, 0xFF_FFFFFF); + ScreenDrawing.texturedRect(x2, y2, cornerSize, cornerSize, texture, uv2, uv2, 1, 1, 0xFF_FFFFFF); + + ScreenDrawing.texturedRect(x1, top, width - 2 * cornerSize, cornerSize, texture, uv1, 0, uv2, uv1, 0xFF_FFFFFF); + ScreenDrawing.texturedRect(left, y1, cornerSize, height - 2 * cornerSize, texture, 0, uv1, uv1, uv2, 0xFF_FFFFFF); + ScreenDrawing.texturedRect(x1, y2, width - 2 * cornerSize, cornerSize, texture, uv1, uv2, uv2, 1, 0xFF_FFFFFF); + ScreenDrawing.texturedRect(x2, y1, cornerSize, height - 2 * cornerSize, texture, uv2, uv1, 1, uv2, 0xFF_FFFFFF); + + ScreenDrawing.texturedRect(x1, y1, width - 2 * cornerSize, height - 2 * cornerSize, texture, uv1, uv1, uv2, uv2, 0xFF_FFFFFF); + } + } } |