| // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef VIEWS_PAINTER_H_ |
| #define VIEWS_PAINTER_H_ |
| |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "third_party/skia/include/core/SkColor.h" |
| |
| namespace gfx { |
| class Canvas; |
| } |
| class SkBitmap; |
| |
| namespace views { |
| |
| // Painter, as the name implies, is responsible for painting in a particular |
| // region. Think of Painter as a Border or Background that can be painted |
| // in any region of a View. |
| class Painter { |
| public: |
| // A convenience method for painting a Painter in a particular region. |
| // This translates the canvas to x/y and paints the painter. |
| static void PaintPainterAt(int x, int y, int w, int h, |
| gfx::Canvas* canvas, Painter* painter); |
| |
| // Creates a painter that draws a gradient between the two colors. |
| static Painter* CreateHorizontalGradient(SkColor c1, SkColor c2); |
| static Painter* CreateVerticalGradient(SkColor c1, SkColor c2); |
| |
| virtual ~Painter() {} |
| |
| // Paints the painter in the specified region. |
| virtual void Paint(int w, int h, gfx::Canvas* canvas) = 0; |
| }; |
| |
| // ImagePainter paints 8 (or 9) images into a box. The four corner |
| // images are drawn at the size of the image, the top/left/bottom/right |
| // images are tiled to fit the area, and the center (if rendered) is |
| // stretched. |
| class ImagePainter : public Painter { |
| public: |
| enum BorderElements { |
| BORDER_TOP_LEFT = 0, |
| BORDER_TOP, |
| BORDER_TOP_RIGHT, |
| BORDER_RIGHT, |
| BORDER_BOTTOM_RIGHT, |
| BORDER_BOTTOM, |
| BORDER_BOTTOM_LEFT, |
| BORDER_LEFT, |
| BORDER_CENTER |
| }; |
| |
| // Constructs a new ImagePainter loading the specified image names. |
| // The images must be in the order defined by the BorderElements. |
| // If draw_center is false, there must be 8 image names, if draw_center |
| // is true, there must be 9 image names with the last giving the name |
| // of the center image. |
| ImagePainter(const int image_resource_names[], |
| bool draw_center); |
| |
| virtual ~ImagePainter() {} |
| |
| // Paints the images. |
| virtual void Paint(int w, int h, gfx::Canvas* canvas); |
| |
| // Returns the specified image. The returned image should NOT be deleted. |
| SkBitmap* GetImage(BorderElements element) { |
| return images_[element]; |
| } |
| |
| private: |
| bool tile_; |
| bool draw_center_; |
| bool tile_center_; |
| // NOTE: the images are owned by ResourceBundle. Don't free them. |
| std::vector<SkBitmap*> images_; |
| |
| DISALLOW_EVIL_CONSTRUCTORS(ImagePainter); |
| }; |
| |
| // HorizontalPainter paints 3 images into a box: left, center and right. The |
| // left and right images are drawn to size at the left/right edges of the |
| // region. The center is tiled in the remaining space. All images must have the |
| // same height. |
| class HorizontalPainter : public Painter { |
| public: |
| // Constructs a new HorizontalPainter loading the specified image names. |
| // The images must be in the order left, right and center. |
| explicit HorizontalPainter(const int image_resource_names[]); |
| |
| virtual ~HorizontalPainter() {} |
| |
| // Paints the images. |
| virtual void Paint(int w, int h, gfx::Canvas* canvas); |
| |
| // Height of the images. |
| int height() const { return height_; } |
| |
| private: |
| // The image chunks. |
| enum BorderElements { |
| LEFT, |
| CENTER, |
| RIGHT |
| }; |
| |
| // The height. |
| int height_; |
| // NOTE: the images are owned by ResourceBundle. Don't free them. |
| SkBitmap* images_[3]; |
| |
| DISALLOW_EVIL_CONSTRUCTORS(HorizontalPainter); |
| }; |
| |
| } // namespace views |
| |
| #endif // VIEWS_PAINTER_H_ |