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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef UI_GFX_CANVAS_H_ | 5 #ifndef UI_GFX_CANVAS_H_ |
6 #define UI_GFX_CANVAS_H_ | 6 #define UI_GFX_CANVAS_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <memory> | 10 #include <memory> |
11 #include <vector> | 11 #include <vector> |
12 | 12 |
13 #include "base/macros.h" | 13 #include "base/macros.h" |
| 14 #include "base/optional.h" |
14 #include "base/strings/string16.h" | 15 #include "base/strings/string16.h" |
15 #include "cc/paint/paint_canvas.h" | 16 #include "cc/paint/paint_canvas.h" |
16 #include "cc/paint/paint_flags.h" | 17 #include "cc/paint/paint_flags.h" |
17 #include "cc/paint/paint_surface.h" | 18 #include "cc/paint/skia_paint_canvas.h" |
18 #include "ui/gfx/image/image_skia.h" | 19 #include "ui/gfx/image/image_skia.h" |
19 #include "ui/gfx/native_widget_types.h" | 20 #include "ui/gfx/native_widget_types.h" |
20 #include "ui/gfx/text_constants.h" | 21 #include "ui/gfx/text_constants.h" |
21 | 22 |
22 namespace gfx { | 23 namespace gfx { |
23 | 24 |
24 class Rect; | 25 class Rect; |
25 class RectF; | 26 class RectF; |
26 class FontList; | 27 class FontList; |
27 class Point; | 28 class Point; |
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464 // Apply transformation on the canvas. | 465 // Apply transformation on the canvas. |
465 void Transform(const Transform& transform); | 466 void Transform(const Transform& transform); |
466 | 467 |
467 // Draws the given string with a fade gradient at the end. | 468 // Draws the given string with a fade gradient at the end. |
468 void DrawFadedString(const base::string16& text, | 469 void DrawFadedString(const base::string16& text, |
469 const FontList& font_list, | 470 const FontList& font_list, |
470 SkColor color, | 471 SkColor color, |
471 const Rect& display_rect, | 472 const Rect& display_rect, |
472 int flags); | 473 int flags); |
473 | 474 |
474 SkBitmap ToBitmap(); | 475 // Note that writing to this bitmap will modify pixels stored in this canvas. |
| 476 SkBitmap GetBitmap() const; |
475 | 477 |
476 // TODO(enne): rename sk_canvas members and interface. | 478 // TODO(enne): rename sk_canvas members and interface. |
477 cc::PaintCanvas* sk_canvas() { return canvas_; } | 479 cc::PaintCanvas* sk_canvas() { return canvas_; } |
478 float image_scale() const { return image_scale_; } | 480 float image_scale() const { return image_scale_; } |
479 | 481 |
480 private: | 482 private: |
481 // Tests whether the provided rectangle intersects the current clip rect. | 483 // Tests whether the provided rectangle intersects the current clip rect. |
482 bool IntersectsClipRect(const SkRect& rect); | 484 bool IntersectsClipRect(const SkRect& rect); |
483 | 485 |
484 // Helper for the DrawImageInt functions declared above. The | 486 // Helper for the DrawImageInt functions declared above. The |
485 // |remove_image_scale| parameter indicates if the scale of the |image_rep| | 487 // |remove_image_scale| parameter indicates if the scale of the |image_rep| |
486 // should be removed when drawing the image, to avoid double-scaling it. | 488 // should be removed when drawing the image, to avoid double-scaling it. |
487 void DrawImageIntHelper(const ImageSkiaRep& image_rep, | 489 void DrawImageIntHelper(const ImageSkiaRep& image_rep, |
488 int src_x, | 490 int src_x, |
489 int src_y, | 491 int src_y, |
490 int src_w, | 492 int src_w, |
491 int src_h, | 493 int src_h, |
492 int dest_x, | 494 int dest_x, |
493 int dest_y, | 495 int dest_y, |
494 int dest_w, | 496 int dest_w, |
495 int dest_h, | 497 int dest_h, |
496 bool filter, | 498 bool filter, |
497 const cc::PaintFlags& flags, | 499 const cc::PaintFlags& flags, |
498 bool remove_image_scale); | 500 bool remove_image_scale); |
| 501 cc::PaintCanvas* CreateOwnedCanvas(const Size& size, bool is_opaque); |
499 | 502 |
500 // The device scale factor at which drawing on this canvas occurs. | 503 // The device scale factor at which drawing on this canvas occurs. |
501 // An additional scale can be applied via Canvas::Scale(). However, | 504 // An additional scale can be applied via Canvas::Scale(). However, |
502 // Canvas::Scale() does not affect |image_scale_|. | 505 // Canvas::Scale() does not affect |image_scale_|. |
503 float image_scale_; | 506 float image_scale_; |
504 | 507 |
505 // canvas_ is our active canvas object. Sometimes we are also the owner, | 508 // canvas_ is our active canvas object. Sometimes we are also the owner, |
506 // in which case surface_ will be set. Other times we are just | 509 // in which case bitmap_ and owned_canvas_ will be set. Other times we are |
507 // borrowing someone else's canvas, in which case canvas_ will point there | 510 // just borrowing someone else's canvas, in which case canvas_ will point |
508 // but surface_ will be null. | 511 // there but bitmap_ and owned_canvas_ will not exist. |
509 sk_sp<cc::PaintSurface> surface_; | 512 base::Optional<SkBitmap> bitmap_; |
| 513 base::Optional<cc::SkiaPaintCanvas> owned_canvas_; |
510 cc::PaintCanvas* canvas_; | 514 cc::PaintCanvas* canvas_; |
511 | 515 |
512 DISALLOW_COPY_AND_ASSIGN(Canvas); | 516 DISALLOW_COPY_AND_ASSIGN(Canvas); |
513 }; | 517 }; |
514 | 518 |
515 } // namespace gfx | 519 } // namespace gfx |
516 | 520 |
517 #endif // UI_GFX_CANVAS_H_ | 521 #endif // UI_GFX_CANVAS_H_ |
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