chromeos: Move files in //ash/common to //ash, part 2

ash/common/frame/caption_buttons/frame_caption_button.cc

Index: ash/common/frame/caption_buttons/frame_caption_button.cc
diff --git a/ash/common/frame/caption_buttons/frame_caption_button.cc b/ash/common/frame/caption_buttons/frame_caption_button.cc
deleted file mode 100644
index 0d26e0d626890eef84974bd746c8f5cd0d56820e..0000000000000000000000000000000000000000
--- a/ash/common/frame/caption_buttons/frame_caption_button.cc
+++ /dev/null
@@ -1,191 +0,0 @@
-// Copyright 2013 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.
-
-#include "ash/common/frame/caption_buttons/frame_caption_button.h"
-
-#include "ui/gfx/animation/slide_animation.h"
-#include "ui/gfx/animation/throb_animation.h"
-#include "ui/gfx/canvas.h"
-#include "ui/gfx/color_palette.h"
-#include "ui/gfx/paint_vector_icon.h"
-#include "ui/gfx/vector_icons_public.h"
-
-namespace ash {
-
-namespace {
-
-// The duration of the crossfade animation when swapping the button's images.
-const int kSwapImagesAnimationDurationMs = 200;
-
-// The duration of the fade out animation of the old icon during a crossfade
-// animation as a ratio of |kSwapImagesAnimationDurationMs|.
-const float kFadeOutRatio = 0.5f;
-
-// The alpha to draw inactive icons with.
-const float kInactiveIconAlpha = 0.2f;
-
-// The colors and alpha values used for the button background hovered and
-// pressed states.
-// TODO(tdanderson|estade): Request these colors from ThemeProvider.
-const int kHoveredAlpha = 0x14;
-const int kPressedAlpha = 0x24;
-
-}  // namespace
-
-// static
-const char FrameCaptionButton::kViewClassName[] = "FrameCaptionButton";
-
-FrameCaptionButton::FrameCaptionButton(views::ButtonListener* listener,
-                                       CaptionButtonIcon icon)
-    : CustomButton(listener),
-      icon_(icon),
-      paint_as_active_(false),
-      use_light_images_(false),
-      alpha_(255),
-      swap_images_animation_(new gfx::SlideAnimation(this)) {
-  set_animate_on_state_change(true);
-  swap_images_animation_->Reset(1);
-
-  // Do not flip the gfx::Canvas passed to the OnPaint() method. The snap left
-  // and snap right button icons should not be flipped. The other icons are
-  // horizontally symmetrical.
-}
-
-FrameCaptionButton::~FrameCaptionButton() {}
-
-void FrameCaptionButton::SetImage(CaptionButtonIcon icon,
-                                  Animate animate,
-                                  const gfx::VectorIcon& icon_definition) {
-  gfx::ImageSkia new_icon_image = gfx::CreateVectorIcon(
-      icon_definition,
-      use_light_images_ ? SK_ColorWHITE : gfx::kChromeIconGrey);
-
-  // The early return is dependent on |animate| because callers use SetImage()
-  // with ANIMATE_NO to progress the crossfade animation to the end.
-  if (icon == icon_ &&
-      (animate == ANIMATE_YES || !swap_images_animation_->is_animating()) &&
-      new_icon_image.BackedBySameObjectAs(icon_image_)) {
-    return;
-  }
-
-  if (animate == ANIMATE_YES)
-    crossfade_icon_image_ = icon_image_;
-
-  icon_ = icon;
-  icon_definition_ = &icon_definition;
-  icon_image_ = new_icon_image;
-
-  if (animate == ANIMATE_YES) {
-    swap_images_animation_->Reset(0);
-    swap_images_animation_->SetSlideDuration(kSwapImagesAnimationDurationMs);
-    swap_images_animation_->Show();
-  } else {
-    swap_images_animation_->Reset(1);
-  }
-  PreferredSizeChanged();
-  SchedulePaint();
-}
-
-bool FrameCaptionButton::IsAnimatingImageSwap() const {
-  return swap_images_animation_->is_animating();
-}
-
-void FrameCaptionButton::SetAlpha(int alpha) {
-  if (alpha_ != alpha) {
-    alpha_ = alpha;
-    SchedulePaint();
-  }
-}
-
-gfx::Size FrameCaptionButton::GetPreferredSize() const {
-  return size_;
-}
-
-const char* FrameCaptionButton::GetClassName() const {
-  return kViewClassName;
-}
-
-void FrameCaptionButton::OnPaint(gfx::Canvas* canvas) {
-  SkAlpha bg_alpha = SK_AlphaTRANSPARENT;
-  if (hover_animation().is_animating())
-    bg_alpha = hover_animation().CurrentValueBetween(0, kHoveredAlpha);
-  else if (state() == STATE_HOVERED)
-    bg_alpha = kHoveredAlpha;
-  else if (state() == STATE_PRESSED)
-    bg_alpha = kPressedAlpha;
-
-  if (bg_alpha != SK_AlphaTRANSPARENT) {
-    canvas->DrawColor(SkColorSetA(
-        use_light_images_ ? SK_ColorWHITE : SK_ColorBLACK, bg_alpha));
-  }
-
-  int icon_alpha = swap_images_animation_->CurrentValueBetween(0, 255);
-  int crossfade_icon_alpha = 0;
-  if (icon_alpha < static_cast<int>(kFadeOutRatio * 255))
-    crossfade_icon_alpha = static_cast<int>(255 - icon_alpha / kFadeOutRatio);
-
-  if (crossfade_icon_alpha > 0 && !crossfade_icon_image_.isNull()) {
-    gfx::Canvas icon_canvas(icon_image_.size(), canvas->image_scale(), false);
-    cc::PaintFlags flags;
-    flags.setAlpha(icon_alpha);
-    icon_canvas.DrawImageInt(icon_image_, 0, 0, flags);
-
-    flags.setAlpha(crossfade_icon_alpha);
-    flags.setBlendMode(SkBlendMode::kPlus);
-    icon_canvas.DrawImageInt(crossfade_icon_image_, 0, 0, flags);
-
-    PaintCentered(canvas, gfx::ImageSkia(icon_canvas.ExtractImageRep()),
-                  alpha_);
-  } else {
-    if (!swap_images_animation_->is_animating())
-      icon_alpha = alpha_;
-    PaintCentered(canvas, icon_image_, icon_alpha);
-  }
-}
-
-void FrameCaptionButton::OnGestureEvent(ui::GestureEvent* event) {
-  // CustomButton does not become pressed when the user drags off and then back
-  // onto the button. Make FrameCaptionButton pressed in this case because this
-  // behavior is more consistent with AlternateFrameSizeButton.
-  if (event->type() == ui::ET_GESTURE_SCROLL_BEGIN ||
-      event->type() == ui::ET_GESTURE_SCROLL_UPDATE) {
-    if (HitTestPoint(event->location())) {
-      SetState(STATE_PRESSED);
-      RequestFocus();
-      event->StopPropagation();
-    } else {
-      SetState(STATE_NORMAL);
-    }
-  } else if (event->type() == ui::ET_GESTURE_SCROLL_END) {
-    if (HitTestPoint(event->location())) {
-      SetState(STATE_HOVERED);
-      NotifyClick(*event);
-      event->StopPropagation();
-    }
-  }
-  CustomButton::OnGestureEvent(event);
-}
-
-void FrameCaptionButton::PaintCentered(gfx::Canvas* canvas,
-                                       const gfx::ImageSkia& to_center,
-                                       int alpha) {
-  if (!paint_as_active_) {
-    // Paint icons as active when they are hovered over or pressed.
-    double inactive_alpha = kInactiveIconAlpha;
-    if (hover_animation().is_animating()) {
-      inactive_alpha =
-          hover_animation().CurrentValueBetween(inactive_alpha, 1.0f);
-    } else if (state() == STATE_PRESSED || state() == STATE_HOVERED) {
-      inactive_alpha = 1.0f;
-    }
-    alpha *= inactive_alpha;
-  }
-
-  cc::PaintFlags flags;
-  flags.setAlpha(alpha);
-  canvas->DrawImageInt(to_center, (width() - to_center.width()) / 2,
-                       (height() - to_center.height()) / 2, flags);
-}
-
-}  // namespace ash