5933280430
This change adds a method to Rect to transform a rectangle by a graphics HAL transform. Change-Id: Ic0d0988e731bdb5662faee41a5927b1242891658 Bug: 6299171
117 lines
2.9 KiB
C++
117 lines
2.9 KiB
C++
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <system/graphics.h>
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#include <ui/Rect.h>
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namespace android {
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static inline int32_t min(int32_t a, int32_t b) {
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return (a<b) ? a : b;
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}
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static inline int32_t max(int32_t a, int32_t b) {
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return (a>b) ? a : b;
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}
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void Rect::makeInvalid() {
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left = 0;
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top = 0;
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right = -1;
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bottom = -1;
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}
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bool Rect::operator < (const Rect& rhs) const
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{
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if (top<rhs.top) {
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return true;
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} else if (top == rhs.top) {
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if (left < rhs.left) {
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return true;
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} else if (left == rhs.left) {
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if (bottom<rhs.bottom) {
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return true;
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} else if (bottom == rhs.bottom) {
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if (right<rhs.right) {
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return true;
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}
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}
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}
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}
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return false;
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}
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Rect& Rect::offsetTo(int32_t x, int32_t y)
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{
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right -= left - x;
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bottom -= top - y;
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left = x;
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top = y;
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return *this;
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}
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Rect& Rect::offsetBy(int32_t x, int32_t y)
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{
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left += x;
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top += y;
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right+= x;
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bottom+=y;
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return *this;
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}
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const Rect Rect::operator + (const Point& rhs) const
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{
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const Rect result(left+rhs.x, top+rhs.y, right+rhs.x, bottom+rhs.y);
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return result;
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}
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const Rect Rect::operator - (const Point& rhs) const
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{
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const Rect result(left-rhs.x, top-rhs.y, right-rhs.x, bottom-rhs.y);
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return result;
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}
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bool Rect::intersect(const Rect& with, Rect* result) const
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{
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result->left = max(left, with.left);
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result->top = max(top, with.top);
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result->right = min(right, with.right);
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result->bottom = min(bottom, with.bottom);
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return !(result->isEmpty());
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}
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Rect Rect::transform(uint32_t xform, int32_t width, int32_t height) {
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Rect result(*this);
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if (xform & HAL_TRANSFORM_FLIP_H) {
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result = Rect(width - result.right, result.top,
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width - result.left, result.bottom);
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}
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if (xform & HAL_TRANSFORM_FLIP_V) {
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result = Rect(result.left, height - result.bottom,
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result.right, height - result.top);
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}
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if (xform & HAL_TRANSFORM_ROT_90) {
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int left = height - result.bottom;
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int top = result.left;
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int right = height - result.top;
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int bottom = result.right;
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result = Rect(left, top, right, bottom);
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}
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return result;
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}
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}; // namespace android
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