3284017a60
git-svn-id: http://skia.googlecode.com/svn/trunk@8568 2bbb7eff-a529-9590-31e7-b0007b416f81
87 lines
2.8 KiB
C
87 lines
2.8 KiB
C
/*
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* Copyright 2013 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkError_DEFINED
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#define SkError_DEFINED
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/** \file SkError.h
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*/
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enum SkError {
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/** All is well
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*/
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kNoError_SkError=0,
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/** User argument passed to Skia function was invalid: NULL when that’s
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* not allowed, out of numeric range, bad enum, or violating some
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* other general precondition.
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*/
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kInvalidArgument_SkError,
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/** User tried to perform some operation in a state when the operation
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* was not legal, or the operands make no sense (e.g., asking for
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* pixels from an SkPictureCanvas). Other examples might be
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* inset()’ing a rectangle to make it degenerate (negative width/height).
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*/
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kInvalidOperation_SkError,
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/** Probably not needed right now, but in the future we could have opaque
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* handles for SkPictures floating around, and it would be a good idea
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* to anticipate this kind of issue.
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*/
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kInvalidHandle_SkError,
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/** This is probably not possible because paint surely has defaults for
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* everything, but perhaps a paint can get into a bad state somehow.
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*/
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kInvalidPaint_SkError,
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/** Skia was unable to allocate memory to perform some task.
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*/
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kOutOfMemory_SkError,
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/** Skia failed while trying to consume some external resource.
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*/
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kParseError_SkError
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};
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/** Return the current per-thread error code. Error codes are "sticky"; they
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* are not not reset by subsequent successful operations.
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*/
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SkError SkGetLastError();
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/** Clear the current per-thread error code back to kNoError_SkError.
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*/
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void SkClearLastError();
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/** Type for callback functions to be invoked whenever an error is registered.
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* Callback functions take the error code being set, as well as a context
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* argument that is provided when the callback is registered.
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*/
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typedef void (*SkErrorCallbackFunction)(SkError, void *);
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/** Set the current per-thread error callback.
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*
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* @param cb The callback function to be invoked. Passing NULL
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* for cb will revert to the default error callback which
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* does nothing on release builds, but on debug builds will
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* print an informative error message to the screen.
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* @param context An arbitrary pointer that will be passed to
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* the provided callback function.
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*/
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void SkSetErrorCallback(SkErrorCallbackFunction cb, void *context);
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/** Get a human-readable description of the last (per-thread) error that
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* occurred. The returned error message will include not only a human
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* readable version of the error code, but also information about the
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* conditions that led to the error itself.
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*/
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const char *SkGetLastErrorString();
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#endif /* SkError_DEFINED */
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