src/chrome/browser/ui/toolbar/wrench_icon_painter.cc

   1 // Copyright (c) 2013 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 "chrome/browser/ui/toolbar/wrench_icon_painter.h"
   6
   7 #include "grit/theme_resources.h"
   8 #include "ui/base/theme_provider.h"
   9 #include "ui/gfx/animation/multi_animation.h"
  10 #include "ui/gfx/canvas.h"
  11 #include "ui/gfx/image/image_skia.h"
  12 #include "ui/gfx/rect.h"
  13
  14 namespace {
  15
  16 // The wrench icon is made up of this many bars stacked vertically.
  17 const int kBarCount = 3;
  18
  19 // |value| is the animation progress from 0 to 1. |index| is the index of the
  20 // bar being drawn. This function returns a new progress value (from 0 to 1)
  21 // such that bars appear staggered.
  22 double GetStaggeredValue(double value, int index) {
  23   // When animating the wrench icon's bars the bars are staggered by this
  24   // factor.
  25   const double kStaggerFactor = 0.15;
  26   double maxStaggeredValue = 1.0 - (kBarCount - 1) * kStaggerFactor;
  27   double staggeredValue = (value - kStaggerFactor * index) / maxStaggeredValue;
  28   return std::min(1.0, std::max(0.0, staggeredValue));
  29 }
  30
  31 }  // namespace
  32
  33 // static
  34 WrenchIconPainter::Severity WrenchIconPainter::SeverityFromUpgradeLevel(
  35     UpgradeDetector::UpgradeNotificationAnnoyanceLevel level) {
  36   switch (level) {
  37     case UpgradeDetector::UPGRADE_ANNOYANCE_NONE:
  38       return SEVERITY_NONE;
  39     case UpgradeDetector::UPGRADE_ANNOYANCE_LOW:
  40       return SEVERITY_LOW;
  41     case UpgradeDetector::UPGRADE_ANNOYANCE_ELEVATED:
  42       return SEVERITY_MEDIUM;
  43     case UpgradeDetector::UPGRADE_ANNOYANCE_HIGH:
  44       return SEVERITY_HIGH;
  45     case UpgradeDetector::UPGRADE_ANNOYANCE_SEVERE:
  46       return SEVERITY_HIGH;
  47     case UpgradeDetector::UPGRADE_ANNOYANCE_CRITICAL:
  48       return SEVERITY_HIGH;
  49   }
  50   NOTREACHED();
  51   return SEVERITY_NONE;
  52 }
  53
  54 // static
  55 bool WrenchIconPainter::ShouldAnimateUpgradeLevel(
  56     UpgradeDetector::UpgradeNotificationAnnoyanceLevel level) {
  57   bool should_animate = true;
  58   if (level == UpgradeDetector::UPGRADE_ANNOYANCE_LOW) {
  59     // Only animate low severity upgrades once.
  60     static bool should_animate_low_severity = true;
  61     should_animate = should_animate_low_severity;
  62     should_animate_low_severity = false;
  63   }
  64   return should_animate;
  65 }
  66
  67 // static
  68 WrenchIconPainter::Severity WrenchIconPainter::GlobalErrorSeverity() {
  69   // If you change this make sure to also change the menu icon and the bubble
  70   // icon.
  71   return SEVERITY_MEDIUM;
  72 }
  73
  74 WrenchIconPainter::WrenchIconPainter(Delegate* delegate)
  75     : delegate_(delegate),
  76       severity_(SEVERITY_NONE) {
  77 }
  78
  79 WrenchIconPainter::~WrenchIconPainter() {}
  80
  81 void WrenchIconPainter::SetSeverity(Severity severity, bool animate) {
  82   if (severity_ == severity)
  83     return;
  84
  85   severity_ = severity;
  86   delegate_->ScheduleWrenchIconPaint();
  87   animation_.reset();
  88   if (severity_ == SEVERITY_NONE || !animate)
  89     return;
  90
  91   gfx::MultiAnimation::Parts parts;
  92   // Animate the bars left to right.
  93   parts.push_back(gfx::MultiAnimation::Part(1300, gfx::Tween::LINEAR));
  94   // Fade out animation.
  95   parts.push_back(gfx::MultiAnimation::Part(1000, gfx::Tween::EASE_IN));
  96   // Again, animate the bars left to right.
  97   parts.push_back(gfx::MultiAnimation::Part(1300, gfx::Tween::LINEAR));
  98
  99   animation_.reset(
 100       new gfx::MultiAnimation(parts, base::TimeDelta::FromMilliseconds(40)));
 101   animation_->set_delegate(this);
 102   animation_->set_continuous(false);
 103   animation_->Start();
 104 }
 105
 106 void WrenchIconPainter::Paint(gfx::Canvas* canvas,
 107                               ui::ThemeProvider* theme_provider,
 108                               const gfx::Rect& rect,
 109                               BezelType bezel_type) {
 110   gfx::Point center = rect.CenterPoint();
 111
 112   // Bezel.
 113   if (bezel_type != BEZEL_NONE) {
 114     gfx::ImageSkia* image = theme_provider->GetImageSkiaNamed(
 115         bezel_type == BEZEL_HOVER ? IDR_TOOLBAR_BEZEL_HOVER
 116                                   : IDR_TOOLBAR_BEZEL_PRESSED);
 117     canvas->DrawImageInt(*image,
 118                          center.x() - image->width() / 2,
 119                          center.y() - image->height() / 2);
 120   }
 121
 122   // The bars with no color.
 123   {
 124     gfx::ImageSkia* image = theme_provider->GetImageSkiaNamed(IDR_TOOLS_BAR);
 125     int x = center.x() - image->width() / 2;
 126     int y = center.y() - image->height() * kBarCount / 2;
 127     for (int i = 0; i < kBarCount; ++i) {
 128       canvas->DrawImageInt(*image, x, y);
 129       y += image->height();
 130     }
 131   }
 132
 133   // The bars with color based on severity.
 134   int severity_image_id = GetCurrentSeverityImageID();
 135   if (severity_image_id) {
 136     gfx::ImageSkia* image =
 137         theme_provider->GetImageSkiaNamed(severity_image_id);
 138     int x = center.x() - image->width() / 2;
 139     int y = center.y() - image->height() * kBarCount / 2;
 140     for (int i = 0; i < kBarCount; ++i) {
 141       SkPaint paint;
 142       int width = image->width();
 143
 144       if (animation_ && animation_->is_animating()) {
 145         if (animation_->current_part_index() % 2 == 1) {
 146           // Fade out.
 147           int alpha = animation_->CurrentValueBetween(0xFF, 0);
 148           if (alpha == 0)
 149             continue;
 150           paint.setAlpha(alpha);
 151         } else {
 152           // Stagger the widths.
 153           width = image->width() *
 154                   GetStaggeredValue(animation_->GetCurrentValue(), i);
 155           if (width == 0)
 156             continue;
 157         }
 158       }
 159
 160       canvas->DrawImageInt(*image, 0, 0, width, image->height(),
 161                             x, y, width, image->height(), false, paint);
 162       y += image->height();
 163     }
 164   }
 165
 166   if (!badge_.isNull())
 167     canvas->DrawImageInt(badge_, 0, 0);
 168 }
 169
 170 void WrenchIconPainter::AnimationProgressed(const gfx::Animation* animation) {
 171   delegate_->ScheduleWrenchIconPaint();
 172 }
 173
 174 int WrenchIconPainter::GetCurrentSeverityImageID() const {
 175   switch (severity_) {
 176     case SEVERITY_NONE:
 177       return 0;
 178     case SEVERITY_LOW:
 179       return IDR_TOOLS_BAR_LOW;
 180     case SEVERITY_MEDIUM:
 181       return IDR_TOOLS_BAR_MEDIUM;
 182     case SEVERITY_HIGH:
 183       return IDR_TOOLS_BAR_HIGH;
 184   }
 185   NOTREACHED();
 186   return 0;
 187 }