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Side by Side Diff: views/painter.h

Issue 8771006: views: Move the remaining file from views/ to ui/views/. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 9 years ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef VIEWS_PAINTER_H_
6 #define VIEWS_PAINTER_H_
7 #pragma once
8
9 #include "base/basictypes.h"
10 #include "base/compiler_specific.h"
11 #include "third_party/skia/include/core/SkColor.h"
12 #include "views/views_export.h"
13
14 namespace gfx {
15 class Canvas;
16 class Insets;
17 }
18 class SkBitmap;
19
20 namespace views {
21
22 // Painter, as the name implies, is responsible for painting in a particular
23 // region. Think of Painter as a Border or Background that can be painted
24 // in any region of a View.
25 class VIEWS_EXPORT Painter {
26 public:
27 // A convenience method for painting a Painter in a particular region.
28 // This translates the canvas to x/y and paints the painter.
29 static void PaintPainterAt(int x, int y, int w, int h,
30 gfx::Canvas* canvas, Painter* painter);
31
32 // Creates a painter that draws a gradient between the two colors.
33 static Painter* CreateHorizontalGradient(SkColor c1, SkColor c2);
34 static Painter* CreateVerticalGradient(SkColor c1, SkColor c2);
35
36 // Creates a painter that divides |image| into nine regions. The four corners
37 // are rendered at the size specified in insets (for example, the upper
38 // left corners is rendered at 0x0 with a size of
39 // insets.left()xinsets.right()). The four edges are stretched to fill the
40 // destination size.
41 // Ownership is passed to the caller.
42 static Painter* CreateImagePainter(const SkBitmap& image,
43 const gfx::Insets& insets,
44 bool paint_center);
45
46 virtual ~Painter() {}
47
48 // Paints the painter in the specified region.
49 virtual void Paint(int w, int h, gfx::Canvas* canvas) = 0;
50 };
51
52 // HorizontalPainter paints 3 images into a box: left, center and right. The
53 // left and right images are drawn to size at the left/right edges of the
54 // region. The center is tiled in the remaining space. All images must have the
55 // same height.
56 class VIEWS_EXPORT HorizontalPainter : public Painter {
57 public:
58 // Constructs a new HorizontalPainter loading the specified image names.
59 // The images must be in the order left, right and center.
60 explicit HorizontalPainter(const int image_resource_names[]);
61
62 virtual ~HorizontalPainter() {}
63
64 // Paints the images.
65 virtual void Paint(int w, int h, gfx::Canvas* canvas) OVERRIDE;
66
67 // Height of the images.
68 int height() const { return height_; }
69
70 private:
71 // The image chunks.
72 enum BorderElements {
73 LEFT,
74 CENTER,
75 RIGHT
76 };
77
78 // The height.
79 int height_;
80 // NOTE: the images are owned by ResourceBundle. Don't free them.
81 SkBitmap* images_[3];
82
83 DISALLOW_COPY_AND_ASSIGN(HorizontalPainter);
84 };
85
86 } // namespace views
87
88 #endif // VIEWS_PAINTER_H_
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