ui/views/examples/vector_example.cc

   1 // Copyright 2015 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 #include "ui/views/examples/vector_example.h"
   6
   7 #include "base/strings/string_number_conversions.h"
   8 #include "base/strings/utf_string_conversions.h"
   9 #include "ui/gfx/paint_vector_icon.h"
  10 #include "ui/gfx/vector_icons_public2.h"
  11 #include "ui/views/controls/image_view.h"
  12 #include "ui/views/controls/textfield/textfield.h"
  13 #include "ui/views/controls/textfield/textfield_controller.h"
  14 #include "ui/views/layout/box_layout.h"
  15 #include "ui/views/layout/fill_layout.h"
  16 #include "ui/views/view.h"
  17
  18 namespace views {
  19 namespace examples {
  20
  21 namespace {
  22
  23 class VectorIconGallery : public View, public TextfieldController {
  24  public:
  25   VectorIconGallery()
  26       : image_view_(new ImageView()),
  27         size_input_(new Textfield()),
  28         color_input_(new Textfield()),
  29         vector_id_(0),
  30         size_(32),
  31         color_(SK_ColorRED) {
  32     AddChildView(size_input_);
  33     AddChildView(color_input_);
  34     AddChildView(image_view_);
  35
  36     size_input_->set_placeholder_text(base::ASCIIToUTF16("Size in dip"));
  37     size_input_->set_controller(this);
  38     color_input_->set_placeholder_text(base::ASCIIToUTF16("Color (AARRGGBB)"));
  39     color_input_->set_controller(this);
  40
  41     BoxLayout* box = new BoxLayout(BoxLayout::kVertical, 10, 10, 10);
  42     SetLayoutManager(box);
  43     box->SetFlexForView(image_view_, 1);
  44     UpdateImage();
  45   }
  46
  47   ~VectorIconGallery() override {}
  48
  49   // View implementation.
  50   bool OnMousePressed(const ui::MouseEvent& event) override {
  51     if (GetEventHandlerForPoint(event.location()) == image_view_) {
  52       vector_id_ = ((vector_id_ + 1) %
  53                     static_cast<int>(gfx::VectorIconId::VECTOR_ICON_NONE));
  54       UpdateImage();
  55       return true;
  56     }
  57     return false;
  58   }
  59
  60   // TextfieldController implementation.
  61   void ContentsChanged(Textfield* sender,
  62                        const base::string16& new_contents) override {
  63     if (sender == size_input_) {
  64       if (base::StringToSizeT(new_contents, &size_))
  65         UpdateImage();
  66       else
  67         size_input_->SetText(base::string16());
  68
  69       return;
  70     }
  71
  72     DCHECK_EQ(color_input_, sender);
  73     if (new_contents.size() != 8u)
  74       return;
  75     unsigned new_color =
  76         strtoul(base::UTF16ToASCII(new_contents).c_str(), nullptr, 16);
  77     if (new_color <= 0xffffffff) {
  78       color_ = new_color;
  79       UpdateImage();
  80     }
  81   }
  82
  83   void UpdateImage() {
  84     image_view_->SetImage(gfx::CreateVectorIcon(
  85         static_cast<gfx::VectorIconId>(vector_id_), size_, color_));
  86   }
  87
  88  private:
  89   ImageView* image_view_;
  90   Textfield* size_input_;
  91   Textfield* color_input_;
  92
  93   int vector_id_;
  94   size_t size_;
  95   SkColor color_;
  96
  97   DISALLOW_COPY_AND_ASSIGN(VectorIconGallery);
  98 };
  99
 100 }  // namespace
 101
 102 VectorExample::VectorExample() : ExampleBase("Vector Icon") {}
 103
 104 VectorExample::~VectorExample() {}
 105
 106 void VectorExample::CreateExampleView(View* container) {
 107   container->SetLayoutManager(new FillLayout());
 108   container->AddChildView(new VectorIconGallery());
 109 }
 110
 111 }  // namespace examples
 112 }  // namespace views