ui/base/nine_image_painter_factory.h

   1 // Copyright 2014 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 UI_BASE_NINE_IMAGE_PAINTER_FACTORY_H_
   6 #define UI_BASE_NINE_IMAGE_PAINTER_FACTORY_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "ui/base/ui_base_export.h"
  10
  11 // A macro to define arrays of IDR constants used with CreateImageGridPainter.
  12 #define IMAGE_GRID(x) { x ## _TOP_LEFT,    x ## _TOP,    x ## _TOP_RIGHT, \
  13                         x ## _LEFT,        x ## _CENTER, x ## _RIGHT, \
  14                         x ## _BOTTOM_LEFT, x ## _BOTTOM, x ## _BOTTOM_RIGHT, }
  15
  16 // Defines a empty image for used in macro for creating image grid for a ring of
  17 // eight images.
  18 #define EMPTY_IMAGE 0
  19
  20 // A macro to define arrays of IDR constants used with CreateImageGridPainter
  21 // where only a ring of eight images is provided and center image is empty.
  22 #define IMAGE_GRID_NO_CENTER(x) { x ## _TOP_LEFT, x ## _TOP, x ## _TOP_RIGHT, \
  23       x ## _LEFT, EMPTY_IMAGE, x ## _RIGHT, \
  24       x ## _BOTTOM_LEFT, x ## _BOTTOM, x ## _BOTTOM_RIGHT, }
  25
  26 // A macro to define arrays of IDR constants used with CreateImageGridPainter
  27 // where it can only be streched horizontally.
  28 #define IMAGE_GRID_HORIZONTAL(x) { x ## _LEFT, x ## _CENTER, x ## _RIGHT, \
  29       EMPTY_IMAGE, EMPTY_IMAGE, EMPTY_IMAGE, \
  30       EMPTY_IMAGE, EMPTY_IMAGE, EMPTY_IMAGE}
  31
  32 // A macro to define arrays of IDR constants used with CreateImageGridPainter
  33 // where it can only be streched vertically.
  34 #define IMAGE_GRID_VERTICAL(x) { x ## _TOP, EMPTY_IMAGE, EMPTY_IMAGE, \
  35         x ## _CENTER, EMPTY_IMAGE, EMPTY_IMAGE, \
  36         x ## _BOTTOM, EMPTY_IMAGE, EMPTY_IMAGE}
  37
  38 namespace gfx {
  39 class NineImagePainter;
  40 }
  41
  42 namespace ui {
  43
  44 // Creates a NineImagePainter from an array of image ids. It's expected the
  45 // array came from the IMAGE_GRID macro.
  46 UI_BASE_EXPORT scoped_ptr<gfx::NineImagePainter> CreateNineImagePainter(
  47     const int image_ids[]);
  48
  49 }  // namespace ui
  50
  51 #endif  // UI_BASE_NINE_IMAGE_PAINTER_FACTORY_H_