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/*******************************************************************************
* Copyright 2011 See LIBGDX_AUTHORS file.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
******************************************************************************/
package com.badlogic.gdx.graphics;
import com.badlogic.gdx.graphics.g2d.Batch;
import org.mini2Dx.core.Graphics;
import org.mini2Dx.core.graphics.NinePatch;
import org.mini2Dx.core.graphics.Texture;
import org.mini2Dx.gdx.math.MathUtils;
import org.mini2Dx.libgdx.LibgdxGraphics;
import org.mini2Dx.libgdx.graphics.LibgdxTexture;
public class LibgdxNinePatchWrapper {
public static final int TOP_LEFT = 0;
public static final int TOP_CENTER = 1;
public static final int TOP_RIGHT = 2;
public static final int MIDDLE_LEFT = 3;
public static final int MIDDLE_CENTER = 4;
public static final int MIDDLE_RIGHT = 5;
public static final int BOTTOM_LEFT = 6;
public static final int BOTTOM_CENTER = 7;
public static final int BOTTOM_RIGHT = 8;
private final Color tmpDrawColor = new Color();
private LibgdxTexture texture;
protected LibgdxTextureRegionWrapper[] patches;
private int bottomLeft = -1, bottomCenter = -1, bottomRight = -1;
private int middleLeft = -1, middleCenter = -1, middleRight = -1;
private int topLeft = -1, topCenter = -1, topRight = -1;
private float leftWidth, rightWidth, middleWidth, middleHeight, topHeight, bottomHeight;
private float[] vertices = new float[9 * 4 * 5];
private int idx;
protected final Color color = Color.WHITE;
private float paddingLeft = -1, paddingRight = -1, paddingTop = -1, paddingBottom = -1;
/**
* Create a {@link NinePatch} by cutting up the given texture into nine patches.
* The subsequent parameters define the 4 lines that will cut the texture region
* into 9 pieces.
*
* @param left
* Pixels from left edge.
* @param right
* Pixels from right edge.
* @param top
* Pixels from top edge.
* @param bottom
* Pixels from bottom edge.
*/
public LibgdxNinePatchWrapper(LibgdxTexture texture, int left, int right, int top, int bottom) {
this(new LibgdxTextureRegionWrapper(texture), left, right, top, bottom);
}
/**
* Create a {@link NinePatch} by cutting up the given texture region into nine
* patches. The subsequent parameters define the 4 lines that will cut the
* texture region into 9 pieces.
*
* @param left
* Pixels from left edge.
* @param right
* Pixels from right edge.
* @param top
* Pixels from top edge.
* @param bottom
* Pixels from bottom edge.
*/
public LibgdxNinePatchWrapper(LibgdxTextureRegionWrapper region, int left, int right, int top, int bottom) {
if (region == null)
throw new IllegalArgumentException("region cannot be null.");
final int middleWidth = region.getRegionWidth() - left - right;
final int middleHeight = region.getRegionHeight() - top - bottom;
patches = new LibgdxTextureRegionWrapper[9];
if (top > 0) {
if (left > 0)
patches[BOTTOM_LEFT] = new LibgdxTextureRegionWrapper(region, 0, 0, left, top);
if (middleWidth > 0)
patches[BOTTOM_CENTER] = new LibgdxTextureRegionWrapper(region, left, 0, middleWidth, top);
if (right > 0)
patches[BOTTOM_RIGHT] = new LibgdxTextureRegionWrapper(region, left + middleWidth, 0, right, top);
}
if (middleHeight > 0) {
if (left > 0)
patches[MIDDLE_LEFT] = new LibgdxTextureRegionWrapper(region, 0, top, left, middleHeight);
if (middleWidth > 0)
patches[MIDDLE_CENTER] = new LibgdxTextureRegionWrapper(region, left, top, middleWidth, middleHeight);
if (right > 0)
patches[MIDDLE_RIGHT] = new LibgdxTextureRegionWrapper(region, left + middleWidth, top, right, middleHeight);
}
if (bottom > 0) {
if (left > 0)
patches[TOP_LEFT] = new LibgdxTextureRegionWrapper(region, 0, top + middleHeight, left, bottom);
if (middleWidth > 0)
patches[TOP_CENTER] = new LibgdxTextureRegionWrapper(region, left, top + middleHeight, middleWidth, bottom);
if (right > 0)
patches[TOP_RIGHT] = new LibgdxTextureRegionWrapper(region, left + middleWidth, top + middleHeight, right, bottom);
}
// If split only vertical, move splits from right to center.
if (left == 0 && middleWidth == 0) {
patches[TOP_CENTER] = patches[TOP_RIGHT];
patches[MIDDLE_CENTER] = patches[MIDDLE_RIGHT];
patches[BOTTOM_CENTER] = patches[BOTTOM_RIGHT];
patches[TOP_RIGHT] = null;
patches[MIDDLE_RIGHT] = null;
patches[BOTTOM_RIGHT] = null;
}
// If split only horizontal, move splits from bottom to center.
if (top == 0 && middleHeight == 0) {
patches[MIDDLE_LEFT] = patches[BOTTOM_LEFT];
patches[MIDDLE_CENTER] = patches[BOTTOM_CENTER];
patches[MIDDLE_RIGHT] = patches[BOTTOM_RIGHT];
patches[BOTTOM_LEFT] = null;
patches[BOTTOM_CENTER] = null;
patches[BOTTOM_RIGHT] = null;
}
load(patches);
}
public LibgdxNinePatchWrapper(LibgdxNinePatchWrapper ninePatch) {
this(ninePatch, ninePatch.color);
}
public LibgdxNinePatchWrapper(LibgdxNinePatchWrapper ninePatch, Color color) {
texture = ninePatch.texture;
bottomLeft = ninePatch.bottomLeft;
bottomCenter = ninePatch.bottomCenter;
bottomRight = ninePatch.bottomRight;
middleLeft = ninePatch.middleLeft;
middleCenter = ninePatch.middleCenter;
middleRight = ninePatch.middleRight;
topLeft = ninePatch.topLeft;
topCenter = ninePatch.topCenter;
topRight = ninePatch.topRight;
leftWidth = ninePatch.leftWidth;
rightWidth = ninePatch.rightWidth;
middleWidth = ninePatch.middleWidth;
middleHeight = ninePatch.middleHeight;
topHeight = ninePatch.topHeight;
bottomHeight = ninePatch.bottomHeight;
paddingLeft = ninePatch.paddingLeft;
paddingTop = ninePatch.paddingTop;
paddingBottom = ninePatch.paddingBottom;
paddingRight = ninePatch.paddingRight;
patches = ninePatch.patches;
vertices = new float[ninePatch.vertices.length];
System.arraycopy(ninePatch.vertices, 0, vertices, 0, ninePatch.vertices.length);
idx = ninePatch.idx;
this.color.set(color);
}
private void load(LibgdxTextureRegionWrapper[] patches) {
final float color = Color.WHITE.toFloatBits(); // placeholder color,
// overwritten at draw
// time
if (patches[BOTTOM_LEFT] != null) {
bottomLeft = add(patches[BOTTOM_LEFT], color, false, false);
leftWidth = patches[BOTTOM_LEFT].getRegionWidth();
bottomHeight = patches[BOTTOM_LEFT].getRegionHeight();
}
if (patches[BOTTOM_CENTER] != null) {
bottomCenter = add(patches[BOTTOM_CENTER], color, true, false);
middleWidth = Math.max(middleWidth, patches[BOTTOM_CENTER].getRegionWidth());
bottomHeight = Math.max(bottomHeight, patches[BOTTOM_CENTER].getRegionHeight());
}
if (patches[BOTTOM_RIGHT] != null) {
bottomRight = add(patches[BOTTOM_RIGHT], color, false, false);
rightWidth = Math.max(rightWidth, patches[BOTTOM_RIGHT].getRegionWidth());
bottomHeight = Math.max(bottomHeight, patches[BOTTOM_RIGHT].getRegionHeight());
}
if (patches[MIDDLE_LEFT] != null) {
middleLeft = add(patches[MIDDLE_LEFT], color, false, true);
leftWidth = Math.max(leftWidth, patches[MIDDLE_LEFT].getRegionWidth());
middleHeight = Math.max(middleHeight, patches[MIDDLE_LEFT].getRegionHeight());
}
if (patches[MIDDLE_CENTER] != null) {
middleCenter = add(patches[MIDDLE_CENTER], color, true, true);
middleWidth = Math.max(middleWidth, patches[MIDDLE_CENTER].getRegionWidth());
middleHeight = Math.max(middleHeight, patches[MIDDLE_CENTER].getRegionHeight());
}
if (patches[MIDDLE_RIGHT] != null) {
middleRight = add(patches[MIDDLE_RIGHT], color, false, true);
rightWidth = Math.max(rightWidth, patches[MIDDLE_RIGHT].getRegionWidth());
middleHeight = Math.max(middleHeight, patches[MIDDLE_RIGHT].getRegionHeight());
}
if (patches[TOP_LEFT] != null) {
topLeft = add(patches[TOP_LEFT], color, false, false);
leftWidth = Math.max(leftWidth, patches[TOP_LEFT].getRegionWidth());
topHeight = Math.max(topHeight, patches[TOP_LEFT].getRegionHeight());
}
if (patches[TOP_CENTER] != null) {
topCenter = add(patches[TOP_CENTER], color, true, false);
middleWidth = Math.max(middleWidth, patches[TOP_CENTER].getRegionWidth());
topHeight = Math.max(topHeight, patches[TOP_CENTER].getRegionHeight());
}
if (patches[TOP_RIGHT] != null) {
topRight = add(patches[TOP_RIGHT], color, false, false);
rightWidth = Math.max(rightWidth, patches[TOP_RIGHT].getRegionWidth());
topHeight = Math.max(topHeight, patches[TOP_RIGHT].getRegionHeight());
}
if (idx < vertices.length) {
float[] newVertices = new float[idx];
System.arraycopy(vertices, 0, newVertices, 0, idx);
vertices = newVertices;
}
}
private int add(LibgdxTextureRegionWrapper region, float color, boolean isStretchW, boolean isStretchH) {
if (texture == null)
texture = (LibgdxTexture) region.getTexture();
else if (texture != region.getTexture()) //
throw new IllegalArgumentException("All regions must be from the same texture.");
region.flip(false, true);
float u = region.getU();
float v = region.getV();
float u2 = region.getU2();
float v2 = region.getV2();
region.flip(false, true);
// Add half pixel offsets on stretchable dimensions to avoid color
// bleeding when GL_LINEAR
// filtering is used for the texture. This nudges the texture coordinate
// to the center
// of the texel where the neighboring pixel has 0% contribution in
// linear blending mode.
if (texture.getMagFilter() == com.badlogic.gdx.graphics.Texture.TextureFilter.Linear ||
texture.getMinFilter() == com.badlogic.gdx.graphics.Texture.TextureFilter.Linear) {
if (isStretchW) {
float halfTexelWidth = 0.5f * 1.0f / texture.getWidth();
u += halfTexelWidth;
u2 -= halfTexelWidth;
}
if (isStretchH) {
float halfTexelHeight = 0.5f * 1.0f / texture.getHeight();
v -= halfTexelHeight;
v2 += halfTexelHeight;
}
}
final float[] vertices = this.vertices;
vertices[idx + 2] = color;
vertices[idx + 3] = u;
vertices[idx + 4] = v;
vertices[idx + 7] = color;
vertices[idx + 8] = u;
vertices[idx + 9] = v2;
vertices[idx + 12] = color;
vertices[idx + 13] = u2;
vertices[idx + 14] = v2;
vertices[idx + 17] = color;
vertices[idx + 18] = u2;
vertices[idx + 19] = v;
idx += 20;
return idx - 20;
}
/** Set the coordinates and color of a ninth of the patch. */
private void set(int idx, float x, float y, float width, float height, float color) {
final float fx2 = x + width;
final float fy2 = y + height;
final float[] vertices = this.vertices;
vertices[idx] = x;
vertices[idx + 1] = y;
vertices[idx + 2] = color;
vertices[idx + 5] = x;
vertices[idx + 6] = fy2;
vertices[idx + 7] = color;
vertices[idx + 10] = fx2;
vertices[idx + 11] = fy2;
vertices[idx + 12] = color;
vertices[idx + 15] = fx2;
vertices[idx + 16] = y;
vertices[idx + 17] = color;
}
public void render(Graphics g, float x, float y, float width, float height) {
final LibgdxGraphics gdxGraphics = (LibgdxGraphics) g;
draw(gdxGraphics.spriteBatch, x, y, width, height);
}
private void prepareVertices(Batch batch, float x, float y, float width, float height) {
final float centerColumnX = x + leftWidth;
final float rightColumnX = x + width - rightWidth;
final float middleRowY = y + bottomHeight;
final float topRowY = y + height - topHeight;
final float c = tmpDrawColor.set(color).mul(batch.getColor()).toFloatBits();
if (bottomLeft != -1) {
set(bottomLeft, x, y, centerColumnX - x, middleRowY - y, c);
}
if (bottomCenter != -1) {
set(bottomCenter, centerColumnX, y, rightColumnX - centerColumnX, middleRowY - y, c);
}
if (bottomRight != -1) {
set(bottomRight, rightColumnX, y, x + width - rightColumnX, middleRowY - y, c);
}
if (middleLeft != -1) {
set(middleLeft, x, middleRowY, centerColumnX - x, topRowY - middleRowY, c);
}
if (middleCenter != -1) {
set(middleCenter, centerColumnX, middleRowY, rightColumnX - centerColumnX, topRowY - middleRowY, c);
}
if (middleRight != -1) {
set(middleRight, rightColumnX, middleRowY, x + width - rightColumnX, topRowY - middleRowY, c);
}
if (topLeft != -1) {
set(topLeft, x, topRowY, centerColumnX - x, y + height - topRowY, c);
}
if (topCenter != -1) {
set(topCenter, centerColumnX, topRowY, rightColumnX - centerColumnX, y + height - topRowY, c);
}
if (topRight != -1) {
set(topRight, rightColumnX, topRowY, x + width - rightColumnX, y + height - topRowY, c);
}
}
void draw(Batch batch, float x, float y, float width, float height) {
prepareVertices(batch, x, y, width, height);
batch.draw(texture, vertices, 0, idx);
}
void draw(Batch batch, float x, float y, float originX, float originY, float width, float height, float scaleX,
float scaleY, float rotation) {
prepareVertices(batch, x, y, width, height);
float worldOriginX = x + originX, worldOriginY = y + originY;
int n = this.idx;
float[] vertices = this.vertices;
if (rotation != 0) {
for (int i = 0; i < n; i += 5) {
float vx = (vertices[i] - worldOriginX) * scaleX, vy = (vertices[i + 1] - worldOriginY) * scaleY;
float cos = MathUtils.cosDeg(rotation), sin = MathUtils.sinDeg(rotation);
vertices[i] = cos * vx - sin * vy + worldOriginX;
vertices[i + 1] = sin * vx + cos * vy + worldOriginY;
}
} else if (scaleX != 1 || scaleY != 1) {
for (int i = 0; i < n; i += 5) {
vertices[i] = (vertices[i] - worldOriginX) * scaleX + worldOriginX;
vertices[i + 1] = (vertices[i + 1] - worldOriginY) * scaleY + worldOriginY;
}
}
batch.draw(texture, vertices, 0, n);
}
/**
* Copy given color. The color will be blended with the batch color, then
* combined with the texture colors at draw time. Default is WHITE.
*/
public void setColor(Color color) {
this.color.set(color);
}
public void setColor(float r, float g, float b, float a) {
this.color.set(r, g, b, a);
}
public Color getColor() {
return color;
}
public float getLeftWidth() {
return leftWidth;
}
/** Set the draw-time width of the three left edge patches */
public void setLeftWidth(float leftWidth) {
this.leftWidth = leftWidth;
}
public float getRightWidth() {
return rightWidth;
}
/** Set the draw-time width of the three right edge patches */
public void setRightWidth(float rightWidth) {
this.rightWidth = rightWidth;
}
public float getTopHeight() {
return topHeight;
}
/** Set the draw-time height of the three top edge patches */
public void setTopHeight(float topHeight) {
this.topHeight = topHeight;
}
public float getBottomHeight() {
return bottomHeight;
}
/** Set the draw-time height of the three bottom edge patches */
public void setBottomHeight(float bottomHeight) {
this.bottomHeight = bottomHeight;
}
public float getMiddleWidth() {
return middleWidth;
}
/**
* Set the width of the middle column of the patch. At render time, this is
* implicitly the requested render-width of the entire nine patch, minus the
* left and right width. This value is only used for computing the
* {@link #getTotalWidth() default total width}.
*/
public void setMiddleWidth(float middleWidth) {
this.middleWidth = middleWidth;
}
public float getMiddleHeight() {
return middleHeight;
}
/**
* Set the height of the middle row of the patch. At render time, this is
* implicitly the requested render-height of the entire nine patch, minus the
* top and bottom height. This value is only used for computing the
* {@link #getTotalHeight() default total height}.
*/
public void setMiddleHeight(float middleHeight) {
this.middleHeight = middleHeight;
}
public float getTotalWidth() {
return leftWidth + middleWidth + rightWidth;
}
public float getTotalHeight() {
return topHeight + middleHeight + bottomHeight;
}
/**
* Set the padding for content inside this ninepatch. By default the padding is
* set to match the exterior of the ninepatch, so the content should fit exactly
* within the middle patch.
*/
public void setPadding(float left, float right, float top, float bottom) {
this.paddingLeft = left;
this.paddingRight = right;
this.paddingTop = top;
this.paddingBottom = bottom;
}
/**
* Returns the left padding if set, else returns {@link #getLeftWidth()}.
*/
public float getPaddingLeft() {
if (paddingLeft == -1)
return getLeftWidth();
return paddingLeft;
}
/** See {@link #setPadding(float, float, float, float)} */
public void setPaddingLeft(float left) {
this.paddingLeft = left;
}
/**
* Returns the right padding if set, else returns {@link #getRightWidth()}.
*/
public float getPaddingRight() {
if (paddingRight == -1)
return getRightWidth();
return paddingRight;
}
/** See {@link #setPadding(float, float, float, float)} */
public void setPaddingRight(float right) {
this.paddingRight = right;
}
/** Returns the top padding if set, else returns {@link #getTopHeight()}. */
public float getPaddingTop() {
if (paddingTop == -1)
return getTopHeight();
return paddingTop;
}
/** See {@link #setPadding(float, float, float, float)} */
public void setPaddingTop(float top) {
this.paddingTop = top;
}
/**
* Returns the bottom padding if set, else returns {@link #getBottomHeight()}.
*/
public float getPaddingBottom() {
if (paddingBottom == -1)
return getBottomHeight();
return paddingBottom;
}
/** See {@link #setPadding(float, float, float, float)} */
public void setPaddingBottom(float bottom) {
this.paddingBottom = bottom;
}
/**
* Multiplies the top/left/bottom/right sizes and padding by the specified
* amount.
*/
public void scale(float scaleX, float scaleY) {
leftWidth *= scaleX;
rightWidth *= scaleX;
topHeight *= scaleY;
bottomHeight *= scaleY;
middleWidth *= scaleX;
middleHeight *= scaleY;
if (paddingLeft != -1)
paddingLeft *= scaleX;
if (paddingRight != -1)
paddingRight *= scaleX;
if (paddingTop != -1)
paddingTop *= scaleY;
if (paddingBottom != -1)
paddingBottom *= scaleY;
}
public Texture getTexture() {
return texture;
}
}
