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/*
* Copyright (C) 2006 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.
*/
#ifndef ANDROID_UI_RECT
#define ANDROID_UI_RECT
#include <utils/Flattenable.h>
#include <utils/Log.h>
#include <utils/TypeHelpers.h>
#include <ui/Point.h>
#include <android/rect.h>
namespace android {
class Rect : public ARect, public LightFlattenablePod<Rect>
{
public:
typedef ARect::value_type value_type;
static const Rect INVALID_RECT;
// we don't provide copy-ctor and operator= on purpose
// because we want the compiler generated versions
inline Rect() {
left = right = top = bottom = 0;
}
inline Rect(int32_t w, int32_t h) {
left = top = 0;
right = w;
bottom = h;
}
inline Rect(uint32_t w, uint32_t h) {
if (w > INT32_MAX) {
ALOG(LOG_WARN, "Rect",
"Width %u too large for Rect class, clamping", w);
w = INT32_MAX;
}
if (h > INT32_MAX) {
ALOG(LOG_WARN, "Rect",
"Height %u too large for Rect class, clamping", h);
h = INT32_MAX;
}
left = top = 0;
right = w;
bottom = h;
}
inline Rect(int32_t l, int32_t t, int32_t r, int32_t b) {
left = l;
top = t;
right = r;
bottom = b;
}
inline Rect(const Point& lt, const Point& rb) {
left = lt.x;
top = lt.y;
right = rb.x;
bottom = rb.y;
}
void makeInvalid();
inline void clear() {
left = top = right = bottom = 0;
}
// a valid rectangle has a non negative width and height
inline bool isValid() const {
return (getWidth() >= 0) && (getHeight() >= 0);
}
// an empty rect has a zero width or height, or is invalid
inline bool isEmpty() const {
return (getWidth() <= 0) || (getHeight() <= 0);
}
// rectangle's width
inline int32_t getWidth() const {
return right - left;
}
// rectangle's height
inline int32_t getHeight() const {
return bottom - top;
}
inline Rect getBounds() const {
return Rect(right - left, bottom - top);
}
void setLeftTop(const Point& lt) {
left = lt.x;
top = lt.y;
}
void setRightBottom(const Point& rb) {
right = rb.x;
bottom = rb.y;
}
// the following 4 functions return the 4 corners of the rect as Point
Point leftTop() const {
return Point(left, top);
}
Point rightBottom() const {
return Point(right, bottom);
}
Point rightTop() const {
return Point(right, top);
}
Point leftBottom() const {
return Point(left, bottom);
}
// comparisons
inline bool operator == (const Rect& rhs) const {
return (left == rhs.left) && (top == rhs.top) &&
(right == rhs.right) && (bottom == rhs.bottom);
}
inline bool operator != (const Rect& rhs) const {
return !operator == (rhs);
}
// operator < defines an order which allows to use rectangles in sorted
// vectors.
bool operator < (const Rect& rhs) const;
const Rect operator + (const Point& rhs) const;
const Rect operator - (const Point& rhs) const;
Rect& operator += (const Point& rhs) {
return offsetBy(rhs.x, rhs.y);
}
Rect& operator -= (const Point& rhs) {
return offsetBy(-rhs.x, -rhs.y);
}
Rect& offsetToOrigin() {
right -= left;
bottom -= top;
left = top = 0;
return *this;
}
Rect& offsetTo(const Point& p) {
return offsetTo(p.x, p.y);
}
Rect& offsetBy(const Point& dp) {
return offsetBy(dp.x, dp.y);
}
Rect& offsetTo(int32_t x, int32_t y);
Rect& offsetBy(int32_t x, int32_t y);
bool intersect(const Rect& with, Rect* result) const;
// Create a new Rect by transforming this one using a graphics HAL
// transform. This rectangle is defined in a coordinate space starting at
// the origin and extending to (width, height). If the transform includes
// a ROT90 then the output rectangle is defined in a space extending to
// (height, width). Otherwise the output rectangle is in the same space as
// the input.
Rect transform(uint32_t xform, int32_t width, int32_t height) const;
// this calculates (Region(*this) - exclude).bounds() efficiently
Rect reduce(const Rect& exclude) const;
// for backward compatibility
inline int32_t width() const { return getWidth(); }
inline int32_t height() const { return getHeight(); }
inline void set(const Rect& rhs) { operator = (rhs); }
};
ANDROID_BASIC_TYPES_TRAITS(Rect)
}; // namespace android
#endif // ANDROID_UI_RECT
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