replicant-frameworks_native/libs/ui/Rect.cpp
Dan Stoza 5065a55291 libgui: Pass surface damage through BufferQueue
This change adds support for passing surface damage all of the way
down from the EGL interface through the consumer side of the
BufferQueue. Depends on system/core change
Ie645e6a52b37b5c1b3be19481e8348570d1aa62c

Bug: 11239309
Change-Id: I4457ea826e9ade4ec187f973851d855b7b93a31b
2015-04-15 13:19:38 -07:00

144 lines
3.8 KiB
C++

/*
* Copyright (C) 2009 The Android Open Source Project
*
* 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.
*/
#include <system/graphics.h>
#include <ui/Rect.h>
namespace android {
const Rect Rect::INVALID_RECT{0, 0, -1, -1};
static inline int32_t min(int32_t a, int32_t b) {
return (a < b) ? a : b;
}
static inline int32_t max(int32_t a, int32_t b) {
return (a > b) ? a : b;
}
void Rect::makeInvalid() {
left = 0;
top = 0;
right = -1;
bottom = -1;
}
bool Rect::operator <(const Rect& rhs) const {
if (top < rhs.top) {
return true;
} else if (top == rhs.top) {
if (left < rhs.left) {
return true;
} else if (left == rhs.left) {
if (bottom < rhs.bottom) {
return true;
} else if (bottom == rhs.bottom) {
if (right < rhs.right) {
return true;
}
}
}
}
return false;
}
Rect& Rect::offsetTo(int32_t x, int32_t y) {
right -= left - x;
bottom -= top - y;
left = x;
top = y;
return *this;
}
Rect& Rect::offsetBy(int32_t x, int32_t y) {
left += x;
top += y;
right += x;
bottom += y;
return *this;
}
const Rect Rect::operator +(const Point& rhs) const {
const Rect result(left + rhs.x, top + rhs.y, right + rhs.x, bottom + rhs.y);
return result;
}
const Rect Rect::operator -(const Point& rhs) const {
const Rect result(left - rhs.x, top - rhs.y, right - rhs.x, bottom - rhs.y);
return result;
}
bool Rect::intersect(const Rect& with, Rect* result) const {
result->left = max(left, with.left);
result->top = max(top, with.top);
result->right = min(right, with.right);
result->bottom = min(bottom, with.bottom);
return !(result->isEmpty());
}
Rect Rect::transform(uint32_t xform, int32_t width, int32_t height) const {
Rect result(*this);
if (xform & HAL_TRANSFORM_FLIP_H) {
result = Rect(width - result.right, result.top, width - result.left,
result.bottom);
}
if (xform & HAL_TRANSFORM_FLIP_V) {
result = Rect(result.left, height - result.bottom, result.right,
height - result.top);
}
if (xform & HAL_TRANSFORM_ROT_90) {
int left = height - result.bottom;
int top = result.left;
int right = height - result.top;
int bottom = result.right;
result = Rect(left, top, right, bottom);
}
return result;
}
Rect Rect::reduce(const Rect& exclude) const {
Rect result;
uint32_t mask = 0;
mask |= (exclude.left > left) ? 1 : 0;
mask |= (exclude.top > top) ? 2 : 0;
mask |= (exclude.right < right) ? 4 : 0;
mask |= (exclude.bottom < bottom) ? 8 : 0;
if (mask == 0) {
// crop entirely covers us
result.clear();
} else {
result = *this;
if (!(mask & (mask - 1))) {
// power-of-2, i.e.: just one bit is set
if (mask & 1) {
result.right = exclude.left;
} else if (mask & 2) {
result.bottom = exclude.top;
} else if (mask & 4) {
result.left = exclude.right;
} else if (mask & 8) {
result.top = exclude.bottom;
}
}
}
return result;
}
}; // namespace android