diff options
Diffstat (limited to 'src/android/jar/src/org/qtproject/qt/android/QtLayout.java')
| -rw-r--r-- | src/android/jar/src/org/qtproject/qt/android/QtLayout.java | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/src/android/jar/src/org/qtproject/qt/android/QtLayout.java b/src/android/jar/src/org/qtproject/qt/android/QtLayout.java new file mode 100644 index 0000000000..aedc845014 --- /dev/null +++ b/src/android/jar/src/org/qtproject/qt/android/QtLayout.java @@ -0,0 +1,215 @@ +// Copyright (C) 2023 The Qt Company Ltd. +// Copyright (C) 2012 BogDan Vatra <bogdan@kde.org> +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only + +package org.qtproject.qt.android; + +import android.app.Activity; +import android.content.Context; +import android.os.Build; +import android.util.AttributeSet; +import android.util.DisplayMetrics; +import android.view.Display; +import android.view.MotionEvent; +import android.view.View; +import android.view.ViewGroup; + +class QtLayout extends ViewGroup { + + public QtLayout(Context context) + { + super(context); + } + + public QtLayout(Context context, AttributeSet attrs) + { + super(context, attrs); + } + + public QtLayout(Context context, AttributeSet attrs, int defStyle) + { + super(context, attrs, defStyle); + } + + @Override + protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) + { + int count = getChildCount(); + + int maxHeight = 0; + int maxWidth = 0; + + // Find out how big everyone wants to be + measureChildren(widthMeasureSpec, heightMeasureSpec); + + // Find rightmost and bottom-most child + for (int i = 0; i < count; i++) { + View child = getChildAt(i); + if (child.getVisibility() != GONE) { + int childRight; + int childBottom; + + if (child.getLayoutParams() instanceof QtLayout.LayoutParams) { + QtLayout.LayoutParams lp + = (QtLayout.LayoutParams) child.getLayoutParams(); + childRight = lp.x + child.getMeasuredWidth(); + childBottom = lp.y + child.getMeasuredHeight(); + } else { + childRight = child.getMeasuredWidth(); + childBottom = child.getMeasuredHeight(); + } + + maxWidth = Math.max(maxWidth, childRight); + maxHeight = Math.max(maxHeight, childBottom); + } + } + + // Check against minimum height and width + maxHeight = Math.max(maxHeight, getSuggestedMinimumHeight()); + maxWidth = Math.max(maxWidth, getSuggestedMinimumWidth()); + + setMeasuredDimension(resolveSize(maxWidth, widthMeasureSpec), + resolveSize(maxHeight, heightMeasureSpec)); + } + + /** + * Returns a set of layout parameters with a width of + * {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT}, + * a height of {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} + * and with the coordinates (0, 0). + */ + @Override + protected ViewGroup.LayoutParams generateDefaultLayoutParams() + { + return new LayoutParams(android.view.ViewGroup.LayoutParams.WRAP_CONTENT, + android.view.ViewGroup.LayoutParams.WRAP_CONTENT, + 0, + 0); + } + + @Override + protected void onLayout(boolean changed, int l, int t, int r, int b) + { + int count = getChildCount(); + for (int i = 0; i < count; i++) { + View child = getChildAt(i); + if (child.getVisibility() != GONE) { + QtLayout.LayoutParams lp = + (QtLayout.LayoutParams) child.getLayoutParams(); + + int childLeft = lp.x; + int childTop = lp.y; + int childRight = (lp.width == ViewGroup.LayoutParams.MATCH_PARENT) ? + r - l : childLeft + child.getMeasuredWidth(); + int childBottom = (lp.height == ViewGroup.LayoutParams.MATCH_PARENT) ? + b - t : childTop + child.getMeasuredHeight(); + child.layout(childLeft, childTop, childRight, childBottom); + } + } + } + + // Override to allow type-checking of LayoutParams. + @Override + protected boolean checkLayoutParams(ViewGroup.LayoutParams p) + { + return p instanceof QtLayout.LayoutParams; + } + + @Override + protected ViewGroup.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) + { + return new LayoutParams(p); + } + + /** + * Per-child layout information associated with AbsoluteLayout. + * See {android.R.styleable#AbsoluteLayout_Layout Absolute Layout Attributes} + * for a list of all child view attributes that this class supports. + */ + public static class LayoutParams extends ViewGroup.LayoutParams + { + /** + * The horizontal, or X, location of the child within the view group. + */ + public int x; + /** + * The vertical, or Y, location of the child within the view group. + */ + public int y; + + /** + * Creates a new set of layout parameters with the specified width, + * height and location. + * + * @param width the width, either {@link #FILL_PARENT}, + {@link #WRAP_CONTENT} or a fixed size in pixels + * @param height the height, either {@link #FILL_PARENT}, + {@link #WRAP_CONTENT} or a fixed size in pixels + * @param x the X location of the child + * @param y the Y location of the child + */ + public LayoutParams(int width, int height, int x, int y) + { + super(width, height); + this.x = x; + this.y = y; + } + + public LayoutParams(int width, int height) + { + super(width, height); + } + + /** + * {@inheritDoc} + */ + public LayoutParams(ViewGroup.LayoutParams source) + { + super(source); + } + } + + public void moveChild(View view, int index) + { + if (view == null) + return; + + if (indexOfChild(view) == -1) + return; + + detachViewFromParent(view); + requestLayout(); + invalidate(); + attachViewToParent(view, index, view.getLayoutParams()); + } + + /** + * set the layout params on a child view. + * <p> + * Note: This function adds the child view if it's not in the + * layout already. + */ + public void setLayoutParams(final View childView, + final ViewGroup.LayoutParams params, + final boolean forceRedraw) + { + // Invalid view + if (childView == null) + return; + + // Invalid params + if (!checkLayoutParams(params)) + return; + + // View is already in the layout and can therefore be updated + final boolean canUpdate = (this == childView.getParent()); + + if (canUpdate) { + childView.setLayoutParams(params); + if (forceRedraw) + invalidate(); + } else { + addView(childView, params); + } + } +} |