|
Skia
2DGraphicsLibrary
|
|
Skia
2DGraphicsLibrary
|
Pairs SkImageInfo with actual pixels and rowbytes. More...
#include <SkPixmap.h>
Public Member Functions | |
| SkPixmap (const SkImageInfo &info, const void *addr, size_t rowBytes, SkColorTable *ctable=NULL) | |
| void | reset () |
| void | reset (const SkImageInfo &info, const void *addr, size_t rowBytes, SkColorTable *ctable=NULL) |
| void | reset (const SkImageInfo &info) |
| void | setColorSpace (sk_sp< SkColorSpace >) |
| bool SK_WARN_UNUSED_RESULT | reset (const SkMask &) |
| If supported, set this pixmap to point to the pixels in the specified mask and return true. More... | |
| bool SK_WARN_UNUSED_RESULT | extractSubset (SkPixmap *subset, const SkIRect &area) const |
| Computes the intersection of area and this pixmap. More... | |
| const SkImageInfo & | info () const |
| size_t | rowBytes () const |
| const void * | addr () const |
| SkColorTable * | ctable () const |
| int | width () const |
| int | height () const |
| SkColorType | colorType () const |
| SkAlphaType | alphaType () const |
| SkColorSpace * | colorSpace () const |
| bool | isOpaque () const |
| SkIRect | bounds () const |
| int | rowBytesAsPixels () const |
| Return the rowbytes expressed as a number of pixels (like width and height). | |
| int | shiftPerPixel () const |
| Return the shift amount per pixel (i.e. More... | |
| uint64_t | getSize64 () const |
| uint64_t | getSafeSize64 () const |
| size_t | getSafeSize () const |
| bool | computeIsOpaque () const |
| This will brute-force return true if all of the pixels in the pixmap are opaque. More... | |
| SkColor | getColor (int x, int y) const |
| Converts the pixel at the specified coordinate to an unpremultiplied SkColor. More... | |
| const void * | addr (int x, int y) const |
| const uint8_t * | addr8 () const |
| const uint16_t * | addr16 () const |
| const uint32_t * | addr32 () const |
| const uint64_t * | addr64 () const |
| const uint16_t * | addrF16 () const |
| const uint8_t * | addr8 (int x, int y) const |
| const uint16_t * | addr16 (int x, int y) const |
| const uint32_t * | addr32 (int x, int y) const |
| const uint64_t * | addr64 (int x, int y) const |
| const uint16_t * | addrF16 (int x, int y) const |
| void * | writable_addr () const |
| void * | writable_addr (int x, int y) const |
| uint8_t * | writable_addr8 (int x, int y) const |
| uint16_t * | writable_addr16 (int x, int y) const |
| uint32_t * | writable_addr32 (int x, int y) const |
| uint64_t * | writable_addr64 (int x, int y) const |
| uint16_t * | writable_addrF16 (int x, int y) const |
| bool | readPixels (const SkImageInfo &dstInfo, void *dstPixels, size_t dstRowBytes, int srcX, int srcY, SkTransferFunctionBehavior behavior) const |
| bool | readPixels (const SkImageInfo &dstInfo, void *dstPixels, size_t dstRowBytes) const |
| bool | readPixels (const SkImageInfo &dstInfo, void *dstPixels, size_t dstRowBytes, int srcX, int srcY) const |
| bool | readPixels (const SkPixmap &dst, int srcX, int srcY) const |
| bool | readPixels (const SkPixmap &dst) const |
| bool | scalePixels (const SkPixmap &dst, SkFilterQuality) const |
| Copy the pixels from this pixmap into the dst pixmap, converting as needed into dst's colortype/alphatype. More... | |
| bool | erase (SkColor, const SkIRect &subset) const |
| Returns true if pixels were written to (e.g. More... | |
| bool | erase (SkColor color) const |
| bool | erase (const SkColor4f &, const SkIRect *subset=nullptr) const |
Private Attributes | |
| const void * | fPixels |
| SkColorTable * | fCTable |
| size_t | fRowBytes |
| SkImageInfo | fInfo |
Pairs SkImageInfo with actual pixels and rowbytes.
This class does not try to manage the lifetime of the pixel memory (nor the colortable if provided).
| bool SkPixmap::computeIsOpaque | ( | ) | const |
This will brute-force return true if all of the pixels in the pixmap are opaque.
If there are no pixels, or encounters an error, returns false.
Returns true if pixels were written to (e.g.
if colorType is kUnknown_SkColorType, this will return false). If subset does not intersect the bounds of this pixmap, returns false.
| bool SK_WARN_UNUSED_RESULT SkPixmap::extractSubset | ( | SkPixmap * | subset, |
| const SkIRect & | area | ||
| ) | const |
Computes the intersection of area and this pixmap.
If that intersection is non-empty, set subset to that intersection and return true.
On failure, return false and ignore the subset parameter.
| SkColor SkPixmap::getColor | ( | int | x, |
| int | y | ||
| ) | const |
Converts the pixel at the specified coordinate to an unpremultiplied SkColor.
Note: this ignores any SkColorSpace information, and may return lower precision data than is actually in the pixel. Alpha only colortypes (e.g. kAlpha_8_SkColorType) return black with the appropriate alpha set. The value is undefined for kUnknown_SkColorType or if x or y are out of bounds, or if the pixtap does not have any pixels.
| bool SK_WARN_UNUSED_RESULT SkPixmap::reset | ( | const SkMask & | ) |
If supported, set this pixmap to point to the pixels in the specified mask and return true.
On failure, return false and set this pixmap to empty.
| bool SkPixmap::scalePixels | ( | const SkPixmap & | dst, |
| SkFilterQuality | |||
| ) | const |
Copy the pixels from this pixmap into the dst pixmap, converting as needed into dst's colortype/alphatype.
If the conversion cannot be performed, false is returned.
If dst's dimensions differ from the src dimension, the image will be scaled, applying the specified filter-quality.
|
inline |
Return the shift amount per pixel (i.e.
0 for 1-byte per pixel, 1 for 2-bytes per pixel colortypes, 2 for 4-bytes per pixel colortypes). Return 0 for kUnknown_SkColorType.
