#Topic IRect #Alias IRects ## #Alias IRect_Reference ## #Struct SkIRect SkIRect holds four 32-bit integer coordinates describing the upper and lower bounds of a rectangle. SkIRect may be created from outer bounds or from position, width, and height. SkIRect describes an area; if its right is less than or equal to its left, or if its bottom is less than or equal to its top, it is considered empty. #Subtopic Overview #Populate ## #Subtopic Related_Function #Populate #Subtopic ## #Subtopic Member_Function #Populate #Subtopic ## #Subtopic Member #Populate #Member int32_t fLeft #Line # smaller x-axis bounds ## May contain any value. The smaller of the horizontal values when sorted. When equal to or greater than fRight, IRect is empty. ## #Member int32_t fTop #Line # smaller y-axis bounds ## May contain any value. The smaller of the horizontal values when sorted. When equal to or greater than fBottom, IRect is empty. ## #Member int32_t fRight #Line # larger x-axis bounds ## May contain any value. The larger of the vertical values when sorted. When equal to or less than fLeft, IRect is empty. ## #Member int32_t fBottom #Line # larger y-axis bounds ## May contain any value. The larger of the vertical values when sorted. When equal to or less than fTop, IRect is empty. ## #Subtopic Member ## #Subtopic Constructor #Populate # ------------------------------------------------------------------------------ #Method static constexpr SkIRect SK_WARN_UNUSED_RESULT MakeEmpty() #In Constructor #Line # returns bounds of (0, 0, 0, 0) ## Returns constructed IRect set to (0, 0, 0, 0). Many other rectangles are empty; if left is equal to or greater than right, or if top is equal to or greater than bottom. Setting all members to zero is a convenience, but does not designate a special empty rectangle. #Return bounds (0, 0, 0, 0) ## #Example SkIRect rect = SkIRect::MakeEmpty(); SkDebugf("MakeEmpty isEmpty: %s\n", rect.isEmpty() ? "true" : "false"); rect.offset(10, 10); SkDebugf("offset rect isEmpty: %s\n", rect.isEmpty() ? "true" : "false"); rect.inset(10, 10); SkDebugf("inset rect isEmpty: %s\n", rect.isEmpty() ? "true" : "false"); rect.outset(20, 20); SkDebugf("outset rect isEmpty: %s\n", rect.isEmpty() ? "true" : "false"); #StdOut MakeEmpty isEmpty: true offset rect isEmpty: true inset rect isEmpty: true outset rect isEmpty: false ## ## #SeeAlso EmptyIRect isEmpty setEmpty SkRect::MakeEmpty ## # ------------------------------------------------------------------------------ #Method static constexpr SkIRect SK_WARN_UNUSED_RESULT MakeWH(int32_t w, int32_t h) #In Constructor #Line # constructs from int input returning (0, 0, width, height) ## Returns constructed IRect set to (0, 0, w, h). Does not validate input; w or h may be negative. #Param w width of constructed IRect ## #Param h height of constructed IRect ## #Return bounds (0, 0, w, h) ## #Example SkIRect rect1 = SkIRect::MakeWH(25, 35); SkIRect rect2 = SkIRect::MakeSize({25, 35}); SkIRect rect3 = SkIRect::MakeXYWH(0, 0, 25, 35); SkIRect rect4 = SkIRect::MakeLTRB(0, 0, 25, 35); SkDebugf("all %s" "equal\n", rect1 == rect2 && rect2 == rect3 && rect3 == rect4 ? "" : "not "); #StdOut all equal ## ## #SeeAlso MakeSize MakeXYWH SkRect::MakeWH SkRect::MakeIWH ## # ------------------------------------------------------------------------------ #Method static constexpr SkIRect SK_WARN_UNUSED_RESULT MakeSize(const SkISize& size) #In Constructor #Line # constructs from ISize returning (0, 0, width, height) ## Returns constructed IRect set to (0, 0, size.width(), size.height()). Does not validate input; size.width() or size.height() may be negative. #Param size values for IRect width and height ## #Return bounds (0, 0, size.width(), size.height()) ## #Example SkSize size = {25.5f, 35.5f}; SkIRect rect = SkIRect::MakeSize(size.toRound()); SkDebugf("round width: %d height: %d\n", rect.width(), rect.height()); rect = SkIRect::MakeSize(size.toFloor()); SkDebugf("floor width: %d height: %d\n", rect.width(), rect.height()); #StdOut round width: 26 height: 36 floor width: 25 height: 35 ## ## #SeeAlso MakeWH MakeXYWH SkRect::Make SkRect::MakeIWH ## # ------------------------------------------------------------------------------ #Method static constexpr SkIRect SK_WARN_UNUSED_RESULT MakeLTRB(int32_t l, int32_t t, int32_t r, int32_t b) #In Constructor #Line # constructs from int left, top, right, bottom ## Returns constructed IRect set to (l, t, r, b). Does not sort input; IRect may result in fLeft greater than fRight, or fTop greater than fBottom. #Param l integer stored in fLeft ## #Param t integer stored in fTop ## #Param r integer stored in fRight ## #Param b integer stored in fBottom ## #Return bounds (l, t, r, b) ## #Example SkIRect rect = SkIRect::MakeLTRB(5, 35, 15, 25); SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); rect.sort(); SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); #StdOut rect: 5, 35, 15, 25 isEmpty: true rect: 5, 25, 15, 35 isEmpty: false ## ## #SeeAlso MakeXYWH SkRect::MakeLTRB ## # ------------------------------------------------------------------------------ #Method static constexpr SkIRect SK_WARN_UNUSED_RESULT MakeXYWH(int32_t x, int32_t y, int32_t w, int32_t h) #In Constructor #Line # constructs from int input returning (x, y, width, height) ## Returns constructed IRect set to: #Formula # (x, y, x + w, y + h) ##. Does not validate input; w or h may be negative. #Param x stored in fLeft ## #Param y stored in fTop ## #Param w added to x and stored in fRight ## #Param h added to y and stored in fBottom ## #Return bounds at (x, y) with width w and height h ## #Example SkIRect rect = SkIRect::MakeXYWH(5, 35, -15, 25); SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); rect.sort(); SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); #StdOut rect: 5, 35, -10, 60 isEmpty: true rect: -10, 35, 5, 60 isEmpty: false ## ## #SeeAlso MakeLTRB SkRect::MakeXYWH ## #Subtopic Constructor ## #Subtopic Property #Line # member values, center, validity ## #Populate ## # ------------------------------------------------------------------------------ #Method int32_t left() const #In Property #Line # returns smaller bounds in x, if sorted ## Returns left edge of IRect, if sorted. Call sort() to reverse fLeft and fRight if needed. #Return fLeft ## #Example SkIRect unsorted = { 15, 5, 10, 25 }; SkDebugf("unsorted.fLeft: %d unsorted.left(): %d\n", unsorted.fLeft, unsorted.left()); SkIRect sorted = unsorted.makeSorted(); SkDebugf("sorted.fLeft: %d sorted.left(): %d\n", sorted.fLeft, sorted.left()); #StdOut unsorted.fLeft: 15 unsorted.left(): 15 sorted.fLeft: 10 sorted.left(): 10 ## ## #SeeAlso fLeft x() SkRect::left() ## # ------------------------------------------------------------------------------ #Method int32_t top() const #In Property #Line # returns smaller bounds in y, if sorted ## Returns top edge of IRect, if sorted. Call isEmpty to see if IRect may be invalid, and sort() to reverse fTop and fBottom if needed. #Return fTop ## #Example SkIRect unsorted = { 15, 25, 10, 5 }; SkDebugf("unsorted.fTop: %d unsorted.top(): %d\n", unsorted.fTop, unsorted.top()); SkIRect sorted = unsorted.makeSorted(); SkDebugf("sorted.fTop: %d sorted.top(): %d\n", sorted.fTop, sorted.top()); #StdOut unsorted.fTop: 25 unsorted.top(): 25 sorted.fTop: 5 sorted.top(): 5 ## ## #SeeAlso fTop y() SkRect::top() ## # ------------------------------------------------------------------------------ #Method int32_t right() const #In Property #Line # returns larger bounds in x, if sorted ## Returns right edge of IRect, if sorted. Call sort() to reverse fLeft and fRight if needed. #Return fRight ## #Example SkIRect unsorted = { 15, 25, 10, 5 }; SkDebugf("unsorted.fRight: %d unsorted.right(): %d\n", unsorted.fRight, unsorted.right()); SkIRect sorted = unsorted.makeSorted(); SkDebugf("sorted.fRight: %d sorted.right(): %d\n", sorted.fRight, sorted.right()); #StdOut unsorted.fRight: 10 unsorted.right(): 10 sorted.fRight: 15 sorted.right(): 15 ## ## #SeeAlso fRight SkRect::right() ## # ------------------------------------------------------------------------------ #Method int32_t bottom() const #In Property #Line # returns larger bounds in y, if sorted ## Returns bottom edge of IRect, if sorted. Call isEmpty to see if IRect may be invalid, and sort() to reverse fTop and fBottom if needed. #Return fBottom ## #Example SkIRect unsorted = { 15, 25, 10, 5 }; SkDebugf("unsorted.fBottom: %d unsorted.bottom(): %d\n", unsorted.fBottom, unsorted.bottom()); SkIRect sorted = unsorted.makeSorted(); SkDebugf("sorted.fBottom: %d sorted.bottom(): %d\n", sorted.fBottom, sorted.bottom()); #StdOut unsorted.fBottom: 5 unsorted.bottom(): 5 sorted.fBottom: 25 sorted.bottom(): 25 ## ## #SeeAlso fBottom SkRect::bottom() ## # ------------------------------------------------------------------------------ #Method int32_t x() const #In Property #Line # returns bounds left ## Returns left edge of IRect, if sorted. Call isEmpty to see if IRect may be invalid, and sort() to reverse fLeft and fRight if needed. #Return fLeft ## #Example SkIRect unsorted = { 15, 5, 10, 25 }; SkDebugf("unsorted.fLeft: %d unsorted.x(): %d\n", unsorted.fLeft, unsorted.x()); SkIRect sorted = unsorted.makeSorted(); SkDebugf("sorted.fLeft: %d sorted.x(): %d\n", sorted.fLeft, sorted.x()); #StdOut unsorted.fLeft: 15 unsorted.x(): 15 sorted.fLeft: 10 sorted.x(): 10 ## ## #SeeAlso fLeft left() y() SkRect::x() ## # ------------------------------------------------------------------------------ #Method int32_t y() const #In Property #Line # returns bounds top ## Returns top edge of IRect, if sorted. Call isEmpty to see if IRect may be invalid, and sort() to reverse fTop and fBottom if needed. #Return fTop ## #Example SkIRect unsorted = { 15, 25, 10, 5 }; SkDebugf("unsorted.fTop: %d unsorted.y(): %d\n", unsorted.fTop, unsorted.y()); SkIRect sorted = unsorted.makeSorted(); SkDebugf("sorted.fTop: %d sorted.y(): %d\n", sorted.fTop, sorted.y()); #StdOut unsorted.fTop: 25 unsorted.y(): 25 sorted.fTop: 5 sorted.y(): 5 ## ## #SeeAlso fTop top() x() SkRect::y() ## # ------------------------------------------------------------------------------ #Method int32_t width() const #In Property #Line # returns span in x ## Returns span on the x-axis. This does not check if IRect is sorted, or if result fits in 32-bit signed integer; result may be negative. #Return fRight minus fLeft ## #Example SkIRect unsorted = { 15, 25, 10, 5 }; SkDebugf("unsorted width: %d\n", unsorted.width()); SkIRect large = { -2147483647, 1, 2147483644, 2 }; SkDebugf("large width: %d\n", large.width()); #StdOut unsorted width: -5 large width: -5 ## ## #SeeAlso height() width64() height64() SkRect::width() ## # ------------------------------------------------------------------------------ #Method int64_t width64() const #In Property #Line # returns span in y as int64_t ## Returns span on the x-axis. This does not check if IRect is sorted, so the result may be negative. This is safer than calling width() since width() might overflow in its calculation. #Return fRight minus fLeft cast to int64_t ## #Example SkIRect large = { -2147483647, 1, 2147483644, 2 }; SkDebugf("width: %d width64: %lld\n", large.width(), large.width64()); #StdOut width: -5 width64: 4294967291 ## ## #SeeAlso width() height() height64() SkRect::width() ## # ------------------------------------------------------------------------------ #Method int32_t height() const #In Property #Line # returns span in y ## Returns span on the y-axis. This does not check if IRect is sorted, or if result fits in 32-bit signed integer; result may be negative. #Return fBottom minus fTop ## #Example SkIRect unsorted = { 15, 25, 10, 20 }; SkDebugf("unsorted height: %d\n", unsorted.height()); SkIRect large = { 1, -2147483647, 2, 2147483644 }; SkDebugf("large height: %d\n", large.height()); #StdOut unsorted height: -5 large height: -5 ## ## #SeeAlso width() SkRect::height() ## # ------------------------------------------------------------------------------ #Method int64_t height64() const #In Property #Line # returns span in y as int64_t ## Returns span on the y-axis. This does not check if IRect is sorted, so the result may be negative. This is safer than calling height() since height() might overflow in its calculation. #Return fBottom minus fTop cast to int64_t ## #Example SkIRect large = { 1, -2147483647, 2, 2147483644 }; SkDebugf("height: %d height64: %lld\n", large.height(), large.height64()); #StdOut height: -5 height64: 4294967291 ## ## #SeeAlso width() height() width64() SkRect::height() ## # ------------------------------------------------------------------------------ #Method SkISize size() const #In Property #Line # returns ISize (width, height) ## Returns spans on the x-axis and y-axis. This does not check if IRect is sorted, or if result fits in 32-bit signed integer; result may be negative. #Return ISize (width, height) ## #Example auto debugster = [](const char* prefix, const SkIRect& rect) -> void { SkISize size = rect.size(); SkDebugf("%s ", prefix); SkDebugf("rect: %d, %d, %d, %d ", rect.left(), rect.top(), rect.right(), rect.bottom()); SkDebugf("size: %d, %d\n", size.width(), size.height()); }; SkIRect rect = {20, 30, 40, 50}; debugster("original", rect); rect.offset(20, 20); debugster(" offset", rect); rect.outset(20, 20); debugster(" outset", rect); #StdOut original rect: 20, 30, 40, 50 size: 20, 20 offset rect: 40, 50, 60, 70 size: 20, 20 outset rect: 20, 30, 80, 90 size: 60, 60 ## ## #SeeAlso height() width() MakeSize ## # ------------------------------------------------------------------------------ #Method bool isEmpty() const #In Property #Line # returns true if width or height are zero or negative or they exceed int32_t ## Returns true if width() or height() . #Return true if width() or height() are zero or negative ## #Example SkIRect tests[] = {{20, 40, 10, 50}, {20, 40, 20, 50}}; for (auto rect : tests) { SkDebugf("rect: {%d, %d, %d, %d} is" "%s empty\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "" : " not"); rect.sort(); SkDebugf("sorted: {%d, %d, %d, %d} is" "%s empty\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "" : " not"); } #StdOut rect: {20, 40, 10, 50} is empty sorted: {10, 40, 20, 50} is not empty rect: {20, 40, 20, 50} is empty sorted: {20, 40, 20, 50} is empty ## ## #SeeAlso EmptyIRect MakeEmpty sort SkRect::isEmpty ## # ------------------------------------------------------------------------------ #Method bool isEmpty64() const #In Property #Line # returns true if width or height are zero or negative ## Returns true if fLeft is equal to or greater than fRight, or if fTop is equal to or greater than fBottom. Call sort() to reverse rectangles with negative width64() or height64(). #Return true if width64() or height64() are zero or negative ## #Example SkIRect tests[] = {{20, 40, 10, 50}, {20, 40, 20, 50}}; for (auto rect : tests) { SkDebugf("rect: {%d, %d, %d, %d} is" "%s empty\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty64() ? "" : " not"); rect.sort(); SkDebugf("sorted: {%d, %d, %d, %d} is" "%s empty\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty64() ? "" : " not"); } #StdOut rect: {20, 40, 10, 50} is empty sorted: {10, 40, 20, 50} is not empty rect: {20, 40, 20, 50} is empty sorted: {20, 40, 20, 50} is empty ## ## #SeeAlso EmptyIRect MakeEmpty sort SkRect::isEmpty ## #Subtopic Operator #Populate # ------------------------------------------------------------------------------ #Method bool operator==(const SkIRect& a, const SkIRect& b) #In Operator #Line # returns true if members are equal ## Returns true if all members in a: fLeft, fTop, fRight, and fBottom; are identical to corresponding members in b. #Param a IRect to compare ## #Param b IRect to compare ## #Return true if members are equal ## #Example SkIRect test = {0, 0, 2, 2}; SkIRect sorted = test.makeSorted(); SkDebugf("test %c= sorted\n", test == sorted ? '=' : '!'); #StdOut test == sorted ## ## #SeeAlso operator!=(const SkIRect& a, const SkIRect& b) ## # ------------------------------------------------------------------------------ #Method bool operator!=(const SkIRect& a, const SkIRect& b) #In Operator #Line # returns true if members are unequal ## Returns true if any member in a: fLeft, fTop, fRight, and fBottom; is not identical to the corresponding member in b. #Param a IRect to compare ## #Param b IRect to compare ## #Return true if members are not equal ## #Example SkIRect test = {2, 2, 0, 0}; SkIRect sorted = test.makeSorted(); SkDebugf("test %c= sorted\n", test != sorted ? '!' : '='); #StdOut test != sorted ## ## #SeeAlso operator==(const SkIRect& a, const SkIRect& b) ## #Subtopic Operator ## # ------------------------------------------------------------------------------ #Subtopic Set #Line # replaces all values ## #Populate ## #Method void setEmpty() #In Set #Line # sets to (0, 0, 0, 0) ## Sets IRect to (0, 0, 0, 0). Many other rectangles are empty; if left is equal to or greater than right, or if top is equal to or greater than bottom. Setting all members to zero is a convenience, but does not designate a special empty rectangle. #Example SkIRect rect = {3, 4, 1, 2}; for (int i = 0; i < 2; ++i) { SkDebugf("rect: {%d, %d, %d, %d} is %s" "empty\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom, rect.isEmpty() ? "" : "not "); rect.setEmpty(); } #StdOut rect: {3, 4, 1, 2} is empty rect: {0, 0, 0, 0} is empty ## ## #SeeAlso MakeEmpty SkRect::setEmpty ## # ------------------------------------------------------------------------------ #Method void set(int32_t left, int32_t top, int32_t right, int32_t bottom) #In Set #Line # sets to (left, top, right, bottom) ## Sets IRect to (left, top, right, bottom). left and right are not sorted; left is not necessarily less than right. top and bottom are not sorted; top is not necessarily less than bottom. #Param left assigned to fLeft ## #Param top assigned to fTop ## #Param right assigned to fRight ## #Param bottom assigned to fBottom ## #Example SkIRect rect1 = {3, 4, 1, 2}; SkDebugf("rect1: {%d, %d, %d, %d}\n", rect1.fLeft, rect1.fTop, rect1.fRight, rect1.fBottom); SkIRect rect2; rect2.set(3, 4, 1, 2); SkDebugf("rect2: {%d, %d, %d, %d}\n", rect2.fLeft, rect2.fTop, rect2.fRight, rect2.fBottom); #StdOut rect1: {3, 4, 1, 2} rect2: {3, 4, 1, 2} ## ## #SeeAlso setLTRB setXYWH SkRect::set ## # ------------------------------------------------------------------------------ #Method void setLTRB(int32_t left, int32_t top, int32_t right, int32_t bottom) #In Set #Line # sets to SkScalar input (left, top, right, bottom) ## Sets IRect to (left, top, right, bottom). left and right are not sorted; left is not necessarily less than right. top and bottom are not sorted; top is not necessarily less than bottom. #Param left stored in fLeft ## #Param top stored in fTop ## #Param right stored in fRight ## #Param bottom stored in fBottom ## #Example SkIRect rect1 = {3, 4, 1, 2}; SkDebugf("rect1: {%d, %d, %d, %d}\n", rect1.fLeft, rect1.fTop, rect1.fRight, rect1.fBottom); SkIRect rect2; rect2.setLTRB(3, 4, 1, 2); SkDebugf("rect2: {%d, %d, %d, %d}\n", rect2.fLeft, rect2.fTop, rect2.fRight, rect2.fBottom); #StdOut rect1: {3, 4, 1, 2} rect2: {3, 4, 1, 2} ## ## #SeeAlso set setXYWH SkRect::setLTRB ## # ------------------------------------------------------------------------------ #Method void setXYWH(int32_t x, int32_t y, int32_t width, int32_t height) #In Set #Line # sets to (x, y, width, height) ## Sets IRect to: #Formula # (x, y, x + width, y + height) ##. Does not validate input; width or height may be negative. #Param x stored in fLeft ## #Param y stored in fTop ## #Param width added to x and stored in fRight ## #Param height added to y and stored in fBottom ## #Example SkIRect rect; rect.setXYWH(5, 35, -15, 25); SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); rect.sort(); SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); #StdOut rect: 5, 35, -10, 60 isEmpty: true rect: -10, 35, 5, 60 isEmpty: false ## ## #SeeAlso MakeXYWH setLTRB set SkRect::setXYWH ## #Subtopic Inset_Outset_Offset #Line # moves sides ## #Populate # ------------------------------------------------------------------------------ #Method SkIRect makeOffset(int32_t dx, int32_t dy) const #In Inset_Outset_Offset #Line # constructs from translated sides ## Returns IRect offset by (dx, dy). If dx is negative, IRect returned is moved to the left. If dx is positive, IRect returned is moved to the right. If dy is negative, IRect returned is moved upward. If dy is positive, IRect returned is moved downward. #Param dx offset added to fLeft and fRight ## #Param dy offset added to fTop and fBottom ## #Return IRect offset by dx and dy, with original width and height ## #Example SkIRect rect = { 10, 50, 20, 60 }; SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); rect = rect.makeOffset(15, 32); SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); #StdOut rect: 10, 50, 20, 60 isEmpty: false rect: 25, 82, 35, 92 isEmpty: false ## ## #SeeAlso offset() makeInset makeOutset SkRect::makeOffset ## # ------------------------------------------------------------------------------ #Method SkIRect makeInset(int32_t dx, int32_t dy) const #In Inset_Outset_Offset #Line # constructs from sides moved symmetrically about the center ## Returns IRect, inset by (dx, dy). If dx is negative, IRect returned is wider. If dx is positive, IRect returned is narrower. If dy is negative, IRect returned is taller. If dy is positive, IRect returned is shorter. #Param dx offset added to fLeft and subtracted from fRight ## #Param dy offset added to fTop and subtracted from fBottom ## #Return IRect inset symmetrically left and right, top and bottom ## #Example SkIRect rect = { 10, 50, 20, 60 }; SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); rect = rect.makeInset(15, 32); SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); #StdOut rect: 10, 50, 20, 60 isEmpty: false rect: 25, 82, 5, 28 isEmpty: true ## ## #SeeAlso inset() makeOffset makeOutset SkRect::makeInset ## # ------------------------------------------------------------------------------ #Method SkIRect makeOutset(int32_t dx, int32_t dy) const #In Inset_Outset_Offset #Line # constructs from sides moved symmetrically about the center ## Returns IRect, outset by (dx, dy). If dx is negative, IRect returned is narrower. If dx is positive, IRect returned is wider. If dy is negative, IRect returned is shorter. If dy is positive, IRect returned is taller. #Param dx offset subtracted to fLeft and added from fRight ## #Param dy offset subtracted to fTop and added from fBottom ## #Return IRect outset symmetrically left and right, top and bottom ## #Example SkIRect rect = { 10, 50, 20, 60 }; SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); rect = rect.makeOutset(15, 32); SkDebugf("rect: %d, %d, %d, %d isEmpty: %s\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.isEmpty() ? "true" : "false"); #StdOut rect: 10, 50, 20, 60 isEmpty: false rect: -5, 18, 35, 92 isEmpty: false ## ## #SeeAlso outset() makeOffset makeInset SkRect::makeOutset ## # ------------------------------------------------------------------------------ #Method void offset(int32_t dx, int32_t dy) #In Inset_Outset_Offset #Line # translates sides without changing width and height ## Offsets IRect by adding dx to fLeft, fRight; and by adding dy to fTop, fBottom. If dx is negative, moves IRect returned to the left. If dx is positive, moves IRect returned to the right. If dy is negative, moves IRect returned upward. If dy is positive, moves IRect returned downward. #Param dx offset added to fLeft and fRight ## #Param dy offset added to fTop and fBottom ## #Example SkIRect rect = { 10, 14, 50, 73 }; rect.offset(5, 13); SkDebugf("rect: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); #StdOut rect: 15, 27, 55, 86 ## ## #SeeAlso offsetTo makeOffset SkRect::offset ## # ------------------------------------------------------------------------------ #Method void offset(const SkIPoint& delta) #In Inset_Outset_Offset Offsets IRect by adding delta.fX to fLeft, fRight; and by adding delta.fY to fTop, fBottom. If delta.fX is negative, moves IRect returned to the left. If delta.fX is positive, moves IRect returned to the right. If delta.fY is negative, moves IRect returned upward. If delta.fY is positive, moves IRect returned downward. #Param delta offset added to IRect ## #Example SkIRect rect = { 10, 14, 50, 73 }; rect.offset({5, 13}); SkDebugf("rect: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); #StdOut rect: 15, 27, 55, 86 ## ## #SeeAlso offsetTo makeOffset SkRect::offset ## # ------------------------------------------------------------------------------ #Method void offsetTo(int32_t newX, int32_t newY) #In Inset_Outset_Offset #Line # translates to (x, y) without changing width and height ## Offsets IRect so that fLeft equals newX, and fTop equals newY. width and height are unchanged. #Param newX stored in fLeft, preserving width() ## #Param newY stored in fTop, preserving height() ## #Example SkIRect rect = { 10, 14, 50, 73 }; rect.offsetTo(15, 27); SkDebugf("rect: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); #StdOut rect: 15, 27, 55, 86 ## ## #SeeAlso offset makeOffset setXYWH SkRect::offsetTo ## # ------------------------------------------------------------------------------ #Method void inset(int32_t dx, int32_t dy) #In Inset_Outset_Offset #Line # moves the sides symmetrically about the center ## Insets IRect by (dx,dy). If dx is positive, makes IRect narrower. If dx is negative, makes IRect wider. If dy is positive, makes IRect shorter. If dy is negative, makes IRect taller. #Param dx offset added to fLeft and subtracted from fRight ## #Param dy offset added to fTop and subtracted from fBottom ## #Example SkIRect rect = { 10, 14, 50, 73 }; rect.inset(5, 13); SkDebugf("rect: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); #StdOut rect: 15, 27, 45, 60 ## ## #SeeAlso outset makeInset SkRect::inset ## # ------------------------------------------------------------------------------ #Method void outset(int32_t dx, int32_t dy) #In Inset_Outset_Offset #Line # moves the sides symmetrically about the center ## Outsets IRect by (dx, dy). If dx is positive, makes IRect wider. If dx is negative, makes IRect narrower. If dy is positive, makes IRect taller. If dy is negative, makes IRect shorter. #Param dx subtracted to fLeft and added from fRight ## #Param dy subtracted to fTop and added from fBottom ## #Example SkIRect rect = { 10, 14, 50, 73 }; rect.outset(5, 13); SkDebugf("rect: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); #StdOut rect: 5, 1, 55, 86 ## ## #SeeAlso inset makeOutset SkRect::outset ## #Subtopic Inset_Outset_Offset ## #Subtopic Intersection #Line # sets to shared bounds ## IRects intersect when they enclose a common area. To intersect, each of the pair must describe area; fLeft is less than fRight, and fTop is less than fBottom; empty() returns false. The intersection of IRect pair can be described by: #Formula # (max(a.fLeft, b.fLeft), max(a.fTop, b.fTop), min(a.fRight, b.fRight), min(a.fBottom, b.fBottom)) ##. The intersection is only meaningful if the resulting IRect is not empty and describes an area: fLeft is less than fRight, and fTop is less than fBottom. #Populate # ------------------------------------------------------------------------------ #Method void adjust(int32_t dL, int32_t dT, int32_t dR, int32_t dB) #In Inset_Outset_Offset #Line # moves the sides independently relative to their original locations ## Adjusts IRect by adding dL to fLeft, dT to fTop, dR to fRight, and dB to fBottom. If dL is positive, narrows IRect on the left. If negative, widens it on the left. If dT is positive, shrinks IRect on the top. If negative, lengthens it on the top. If dR is positive, narrows IRect on the right. If negative, widens it on the right. If dB is positive, shrinks IRect on the bottom. If negative, lengthens it on the bottom. The resulting IRect is not checked for validity. Thus, if the resulting IRect left is greater than right, the IRect will be considered empty. Call sort() after this call if that is not the desired behavior. #Param dL offset added to fLeft ## #Param dT offset added to fTop ## #Param dR offset added to fRight ## #Param dB offset added to fBottom ## #Example SkIRect rect = { 8, 11, 19, 22 }; rect.adjust(2, -1, 1, -2); SkDebugf("rect: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); #StdOut rect: 10, 10, 20, 20 ## ## #SeeAlso inset outset ## # ------------------------------------------------------------------------------ #Method bool contains(int32_t x, int32_t y) const #In Intersection #Line # returns true if IPoint (x, y) is equal or inside ## Returns true if: #Formula # fLeft <= x < fRight && fTop <= y < fBottom ##. Returns false if IRect is empty. Considers input to describe constructed IRect: #Formula # (x, y, x + 1, y + 1) ## and returns true if constructed area is completely enclosed by IRect area. #Param x test IPoint x-coordinate ## #Param y test IPoint y-coordinate ## #Return true if (x, y) is inside IRect ## #Example SkIRect rect = { 30, 50, 40, 60 }; SkIPoint pts[] = { { 30, 50}, { 40, 50}, { 30, 60} }; for (auto pt : pts) { SkDebugf("rect: (%d, %d, %d, %d) %s (%d, %d)\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.contains(pt.x(), pt.y()) ? "contains" : "does not contain", pt.x(), pt.y()); } #StdOut rect: (30, 50, 40, 60) contains (30, 50) rect: (30, 50, 40, 60) does not contain (40, 50) rect: (30, 50, 40, 60) does not contain (30, 60) ## ## #SeeAlso containsNoEmptyCheck SkRect::contains ## # ------------------------------------------------------------------------------ #Method bool contains(int32_t left, int32_t top, int32_t right, int32_t bottom) const #In Intersection Constructs IRect to intersect from (left, top, right, bottom). Does not sort construction. Returns true if IRect contains construction. Returns false if IRect is empty or construction is empty. #Param left x-axis minimum of constructed IRect ## #Param top y-axis minimum of constructed IRect ## #Param right x-axis maximum of constructed IRect ## #Param bottom y-axis maximum of constructed IRect ## #Return true if all sides of IRect are outside construction ## #Example SkIRect rect = { 30, 50, 40, 60 }; SkIRect tests[] = { { 30, 50, 31, 51}, { 39, 49, 40, 50}, { 29, 59, 30, 60} }; for (auto contained : tests) { bool success = rect.contains( contained.left(), contained.top(), contained.right(), contained.bottom()); SkDebugf("rect: (%d, %d, %d, %d) %s (%d, %d, %d, %d)\n", rect.left(), rect.top(), rect.right(), rect.bottom(), success ? "contains" : "does not contain", contained.left(), contained.top(), contained.right(), contained.bottom()); } #StdOut rect: (30, 50, 40, 60) contains (30, 50, 31, 51) rect: (30, 50, 40, 60) does not contain (39, 49, 40, 50) rect: (30, 50, 40, 60) does not contain (29, 59, 30, 60) ## ## #SeeAlso containsNoEmptyCheck SkRect::contains ## # ------------------------------------------------------------------------------ #Method bool contains(const SkIRect& r) const #In Intersection Returns true if IRect contains r. Returns false if IRect is empty or r is empty. IRect contains r when IRect area completely includes r area. #Param r IRect contained ## #Return true if all sides of IRect are outside r ## #Example SkIRect rect = { 30, 50, 40, 60 }; SkIRect tests[] = { { 30, 50, 31, 51}, { 39, 49, 40, 50}, { 29, 59, 30, 60} }; for (auto contained : tests) { SkDebugf("rect: (%d, %d, %d, %d) %s (%d, %d, %d, %d)\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.contains(contained) ? "contains" : "does not contain", contained.left(), contained.top(), contained.right(), contained.bottom()); } #StdOut rect: (30, 50, 40, 60) contains (30, 50, 31, 51) rect: (30, 50, 40, 60) does not contain (39, 49, 40, 50) rect: (30, 50, 40, 60) does not contain (29, 59, 30, 60) ## ## #SeeAlso containsNoEmptyCheck SkRect::contains ## # ------------------------------------------------------------------------------ #Method bool contains(const SkRect& r) const #In Intersection Returns true if IRect contains r. Returns false if IRect is empty or r is empty. IRect contains r when IRect area completely includes r area. #Param r Rect contained ## #Return true if all sides of IRect are outside r ## #Example SkIRect rect = { 30, 50, 40, 60 }; SkRect tests[] = { { 30, 50, 31, 51}, { 39, 49, 40, 50}, { 29, 59, 30, 60} }; for (auto contained : tests) { SkDebugf("rect: (%d, %d, %d, %d) %s (%g, %g, %g, %g)\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.contains(contained) ? "contains" : "does not contain", contained.left(), contained.top(), contained.right(), contained.bottom()); } #StdOut rect: (30, 50, 40, 60) contains (30, 50, 31, 51) rect: (30, 50, 40, 60) does not contain (39, 49, 40, 50) rect: (30, 50, 40, 60) does not contain (29, 59, 30, 60) ## ## #SeeAlso containsNoEmptyCheck SkRect::contains ## # ------------------------------------------------------------------------------ #Method bool containsNoEmptyCheck(int32_t left, int32_t top, int32_t right, int32_t bottom) const #In Intersection #Line # returns true if contains unsorted IRect ## Constructs IRect from (left, top, right, bottom). Does not sort construction. Returns true if IRect contains construction. Asserts if IRect is empty or construction is empty, and if SK_DEBUG is defined. Return is undefined if IRect is empty or construction is empty. #Param left x-axis minimum of constructed IRect ## #Param top y-axis minimum of constructed IRect ## #Param right x-axis maximum of constructed IRect ## #Param bottom y-axis maximum of constructed IRect ## #Return true if all sides of IRect are outside construction ## #Example SkIRect rect = { 30, 50, 40, 60 }; SkIRect tests[] = { { 30, 50, 31, 51}, { 39, 49, 40, 50}, { 29, 59, 30, 60} }; for (auto contained : tests) { bool success = rect.containsNoEmptyCheck( contained.left(), contained.top(), contained.right(), contained.bottom()); SkDebugf("rect: (%d, %d, %d, %d) %s (%d, %d, %d, %d)\n", rect.left(), rect.top(), rect.right(), rect.bottom(), success ? "contains" : "does not contain", contained.left(), contained.top(), contained.right(), contained.bottom()); } #StdOut rect: (30, 50, 40, 60) contains (30, 50, 31, 51) rect: (30, 50, 40, 60) does not contain (39, 49, 40, 50) rect: (30, 50, 40, 60) does not contain (29, 59, 30, 60) ## ## #SeeAlso contains SkRect::contains ## # ------------------------------------------------------------------------------ #Method bool containsNoEmptyCheck(const SkIRect& r) const #In Intersection Returns true if IRect contains construction. Asserts if IRect is empty or construction is empty, and if SK_DEBUG is defined. Return is undefined if IRect is empty or construction is empty. #Param r IRect contained ## #Return true if all sides of IRect are outside r ## #Example SkIRect rect = { 30, 50, 40, 60 }; SkIRect tests[] = { { 30, 50, 31, 51}, { 39, 49, 40, 50}, { 29, 59, 30, 60} }; for (auto contained : tests) { SkDebugf("rect: (%d, %d, %d, %d) %s (%d, %d, %d, %d)\n", rect.left(), rect.top(), rect.right(), rect.bottom(), rect.containsNoEmptyCheck(contained) ? "contains" : "does not contain", contained.left(), contained.top(), contained.right(), contained.bottom()); } #StdOut rect: (30, 50, 40, 60) contains (30, 50, 31, 51) rect: (30, 50, 40, 60) does not contain (39, 49, 40, 50) rect: (30, 50, 40, 60) does not contain (29, 59, 30, 60) ## ## #SeeAlso contains SkRect::contains ## # ------------------------------------------------------------------------------ #Method bool intersect(const SkIRect& r) #In Intersection #Line # sets to shared area; returns true if not empty ## Returns true if IRect intersects r, and sets IRect to intersection. Returns false if IRect does not intersect r, and leaves IRect unchanged. Returns false if either r or IRect is empty, leaving IRect unchanged. #Param r limit of result ## #Return true if r and IRect have area in common ## #Example #Description Two SkDebugf calls are required. If the calls are combined, their arguments may not be evaluated in left to right order: the printed intersection may be before or after the call to intersect. ## SkIRect leftRect = { 10, 40, 50, 80 }; SkIRect rightRect = { 30, 60, 70, 90 }; SkDebugf("%s intersection: ", leftRect.intersect(rightRect) ? "" : "no "); SkDebugf("%d, %d, %d, %d\n", leftRect.left(), leftRect.top(), leftRect.right(), leftRect.bottom()); #StdOut intersection: 30, 60, 50, 80 ## ## #SeeAlso Intersects intersectNoEmptyCheck join SkRect::intersect ## # ------------------------------------------------------------------------------ #Method bool SK_WARN_UNUSED_RESULT intersect(const SkIRect& a, const SkIRect& b) #In Intersection Returns true if a intersects b, and sets IRect to intersection. Returns false if a does not intersect b, and leaves IRect unchanged. Returns false if either a or b is empty, leaving IRect unchanged. #Param a IRect to intersect ## #Param b IRect to intersect ## #Return true if a and b have area in common ## #Example SkIRect result; bool intersected = result.intersect({ 10, 40, 50, 80 }, { 30, 60, 70, 90 }); SkDebugf("%s intersection: %d, %d, %d, %d\n", intersected ? "" : "no ", result.left(), result.top(), result.right(), result.bottom()); #StdOut intersection: 30, 60, 50, 80 ## ## #SeeAlso Intersects intersectNoEmptyCheck join SkRect::intersect ## # ------------------------------------------------------------------------------ #Method bool SK_WARN_UNUSED_RESULT intersectNoEmptyCheck(const SkIRect& a, const SkIRect& b) #In Intersection #Line # sets to shared area; returns true if not empty skips empty check ## Returns true if a intersects b, and sets IRect to intersection. Returns false if a does not intersect b, and leaves IRect unchanged. Asserts if either a or b is empty, and if SK_DEBUG is defined. #Param a IRect to intersect ## #Param b IRect to intersect ## #Return true if a and b have area in common ## #Example SkIRect result; if (result.intersectNoEmptyCheck({ 10, 40, 50, 80 }, { 30, 60, 70, 90 })) { SkDebugf("intersection: %d, %d, %d, %d\n", result.left(), result.top(), result.right(), result.bottom()); } #StdOut intersection: 30, 60, 50, 80 ## ## #SeeAlso Intersects intersect join SkRect::intersect ## # ------------------------------------------------------------------------------ #Method bool intersect(int32_t left, int32_t top, int32_t right, int32_t bottom) #In Intersection Constructs IRect to intersect from (left, top, right, bottom). Does not sort construction. Returns true if IRect intersects construction, and sets IRect to intersection. Returns false if IRect does not intersect construction, and leaves IRect unchanged. Returns false if either construction or IRect is empty, leaving IRect unchanged. #Param left x-axis minimum of constructed IRect ## #Param top y-axis minimum of constructed IRect ## #Param right x-axis maximum of constructed IRect ## #Param bottom y-axis maximum of constructed IRect ## #Return true if construction and IRect have area in common ## #Example #Description Two SkDebugf calls are required. If the calls are combined, their arguments may not be evaluated in left to right order: the printed intersection may be before or after the call to intersect. ## SkIRect leftRect = { 10, 40, 50, 80 }; SkDebugf("%s intersection: ", leftRect.intersect(30, 60, 70, 90) ? "" : "no "); SkDebugf("%d, %d, %d, %d\n", leftRect.left(), leftRect.top(), leftRect.right(), leftRect.bottom()); #StdOut intersection: 30, 60, 50, 80 ## ## #SeeAlso intersectNoEmptyCheck Intersects join SkRect::intersect ## # ------------------------------------------------------------------------------ #Method static bool Intersects(const SkIRect& a, const SkIRect& b) #In Intersection #Line # returns true if areas overlap ## Returns true if a intersects b. Returns false if either a or b is empty, or do not intersect. #Param a IRect to intersect ## #Param b IRect to intersect ## #Return true if a and b have area in common ## #Example SkDebugf("%s intersection", SkIRect::Intersects({10, 40, 50, 80}, {30, 60, 70, 90}) ? "" : "no "); #StdOut intersection ## ## #SeeAlso IntersectsNoEmptyCheck intersect SkRect::intersect ## # ------------------------------------------------------------------------------ #Method static bool IntersectsNoEmptyCheck(const SkIRect& a, const SkIRect& b) #In Intersection #Line # returns true if areas overlap skips empty check ## Returns true if a intersects b. Asserts if either a or b is empty, and if SK_DEBUG is defined. #Param a IRect to intersect ## #Param b IRect to intersect ## #Return true if a and b have area in common ## #Example SkDebugf("%s intersection", SkIRect::IntersectsNoEmptyCheck( {10, 40, 50, 80}, {30, 60, 70, 90}) ? "" : "no "); #StdOut intersection ## ## #SeeAlso Intersects intersect SkRect::intersect ## #Subtopic Intersection ## # ------------------------------------------------------------------------------ #Subtopic Join #Line # sets to union of bounds ## #Populate ## #Method void join(int32_t left, int32_t top, int32_t right, int32_t bottom) #In Join #Line # sets to union of bounds ## Constructs IRect to intersect from (left, top, right, bottom). Does not sort construction. Sets IRect to the union of itself and the construction. Has no effect if construction is empty. Otherwise, if IRect is empty, sets IRect to construction. #Param left x-axis minimum of constructed IRect ## #Param top y-axis minimum of constructed IRect ## #Param right x-axis maximum of constructed IRect ## #Param bottom y-axis maximum of constructed IRect ## #Example SkIRect rect = { 10, 20, 15, 25}; rect.join(50, 60, 55, 65); SkDebugf("join: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); #StdOut join: 10, 20, 55, 65 ## ## #SeeAlso set SkRect::join ## # ------------------------------------------------------------------------------ #Method void join(const SkIRect& r) #In Join Sets IRect to the union of itself and r. Has no effect if r is empty. Otherwise, if IRect is empty, sets IRect to r. #Param r expansion IRect ## #Example SkIRect rect = { 10, 20, 15, 25}; rect.join({50, 60, 55, 65}); SkDebugf("join: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); #StdOut join: 10, 20, 55, 65 ## ## #SeeAlso set SkRect::join ## # ------------------------------------------------------------------------------ #Subtopic Sorting #Line # orders sides ## #Populate ## #Method void sort() #In Sorting #Line # orders sides from smaller to larger ## Swaps fLeft and fRight if fLeft is greater than fRight; and swaps fTop and fBottom if fTop is greater than fBottom. Result may be empty, and width() and height() will be zero or positive. #Example SkIRect rect = { 30, 50, 20, 10 }; SkDebugf("rect: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); rect.sort(); SkDebugf("sorted: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); #StdOut rect: 30, 50, 20, 10 sorted: 20, 10, 30, 50 ## ## #SeeAlso makeSorted SkRect::sort ## # ------------------------------------------------------------------------------ #Method SkIRect makeSorted() const #In Sorting #In Constructor #Line # constructs IRect, ordering sides from smaller to larger ## Returns IRect with fLeft and fRight swapped if fLeft is greater than fRight; and with fTop and fBottom swapped if fTop is greater than fBottom. Result may be empty; and width() and height() will be zero or positive. #Return sorted IRect ## #Example SkIRect rect = { 30, 50, 20, 10 }; SkDebugf("rect: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); SkIRect sort = rect.makeSorted(); SkDebugf("sorted: %d, %d, %d, %d\n", sort.fLeft, sort.fTop, sort.fRight, sort.fBottom); #StdOut rect: 30, 50, 20, 10 sorted: 20, 10, 30, 50 ## ## #SeeAlso sort SkRect::makeSorted ## # ------------------------------------------------------------------------------ #Method static const SkIRect& SK_WARN_UNUSED_RESULT EmptyIRect() #In Constructor #Line # returns immutable bounds of (0, 0, 0, 0) ## Returns a reference to immutable empty IRect, set to (0, 0, 0, 0). #Return global IRect set to all zeroes ## #Example const SkIRect& rect = SkIRect::EmptyIRect(); SkDebugf("rect: %d, %d, %d, %d\n", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); #StdOut rect: 0, 0, 0, 0 ## ## #SeeAlso MakeEmpty ## #Method static SkIRect SK_WARN_UNUSED_RESULT MakeLargest() #Deprecated ## #Struct SkIRect ## #Topic IRect ##