Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 91 insertions, 0 deletions

diff --git a/gfx/skia/skia/include/core/SkDocument.h b/gfx/skia/skia/include/core/SkDocument.h
new file mode 100644
index 0000000000..eacfb2c040
--- /dev/null
+++ b/gfx/skia/skia/include/core/SkDocument.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2013 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef SkDocument_DEFINED
+#define SkDocument_DEFINED
+
+#include "include/core/SkRefCnt.h"
+#include "include/core/SkScalar.h"
+
+class SkCanvas;
+class SkWStream;
+struct SkRect;
+
+/** SK_ScalarDefaultDPI is 72 dots per inch. */
+static constexpr SkScalar SK_ScalarDefaultRasterDPI = 72.0f;
+
+/**
+ *  High-level API for creating a document-based canvas. To use..
+ *
+ *  1. Create a document, specifying a stream to store the output.
+ *  2. For each "page" of content:
+ *      a. canvas = doc->beginPage(...)
+ *      b. draw_my_content(canvas);
+ *      c. doc->endPage();
+ *  3. Close the document with doc->close().
+ */
+class SK_API SkDocument : public SkRefCnt {
+public:
+
+    /**
+     *  Begin a new page for the document, returning the canvas that will draw
+     *  into the page. The document owns this canvas, and it will go out of
+     *  scope when endPage() or close() is called, or the document is deleted.
+     */
+    SkCanvas* beginPage(SkScalar width, SkScalar height, const SkRect* content = nullptr);
+
+    /**
+     *  Call endPage() when the content for the current page has been drawn
+     *  (into the canvas returned by beginPage()). After this call the canvas
+     *  returned by beginPage() will be out-of-scope.
+     */
+    void endPage();
+
+    /**
+     *  Call close() when all pages have been drawn. This will close the file
+     *  or stream holding the document's contents. After close() the document
+     *  can no longer add new pages. Deleting the document will automatically
+     *  call close() if need be.
+     */
+    void close();
+
+    /**
+     *  Call abort() to stop producing the document immediately.
+     *  The stream output must be ignored, and should not be trusted.
+     */
+    void abort();
+
+protected:
+    SkDocument(SkWStream*);
+
+    // note: subclasses must call close() in their destructor, as the base class
+    // cannot do this for them.
+    ~SkDocument() override;
+
+    virtual SkCanvas* onBeginPage(SkScalar width, SkScalar height) = 0;
+    virtual void onEndPage() = 0;
+    virtual void onClose(SkWStream*) = 0;
+    virtual void onAbort() = 0;
+
+    // Allows subclasses to write to the stream as pages are written.
+    SkWStream* getStream() { return fStream; }
+
+    enum State {
+        kBetweenPages_State,
+        kInPage_State,
+        kClosed_State
+    };
+    State getState() const { return fState; }
+
+private:
+    SkWStream* fStream;
+    State      fState;
+
+    using INHERITED = SkRefCnt;
+};
+
+#endif