Home | History | Annotate | Download | only in status 
      1 // Copyright (c) 2011 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/chromeos/status/status_area_button.h"
      6 
      7 #include "content/common/notification_service.h"
      8 #include "grit/theme_resources.h"
      9 #include "ui/base/resource/resource_bundle.h"
     10 #include "ui/gfx/canvas.h"
     11 #include "ui/gfx/skbitmap_operations.h"
     12 #include "views/border.h"
     13 #include "views/view.h"
     14 
     15 namespace chromeos {
     16 
     17 // Colors for different text styles.
     18 static const SkColor kWhitePlainTextColor = 0x99ffffff;
     19 static const SkColor kWhiteHaloedTextColor = 0xb3ffffff;
     20 static const SkColor kWhiteHaloedHaloColor = 0xb3000000;
     21 static const SkColor kGrayEmbossedTextColor = 0xff4c4c4c;
     22 static const SkColor kGrayEmbossedShadowColor = 0x80ffffff;
     23 
     24 // Status area font is bigger.
     25 const int kFontSizeDelta = 1;
     26 
     27 ////////////////////////////////////////////////////////////////////////////////
     28 // StatusAreaButton
     29 
     30 StatusAreaButton::StatusAreaButton(StatusAreaHost* host,
     31                                    views::ViewMenuDelegate* menu_delegate)
     32     : MenuButton(NULL, std::wstring(), menu_delegate, false),
     33       use_menu_button_paint_(false),
     34       active_(true),
     35       host_(host) {
     36   set_border(NULL);
     37   set_use_menu_button_paint(true);
     38   gfx::Font font =
     39       ResourceBundle::GetSharedInstance().GetFont(ResourceBundle::BaseFont);
     40   font = font.DeriveFont(3, gfx::Font::BOLD);
     41   SetFont(font);
     42   SetShowMultipleIconStates(false);
     43   set_alignment(TextButton::ALIGN_CENTER);
     44   set_border(NULL);
     45 
     46   // Use an offset that is top aligned with toolbar.
     47   set_menu_offset(0, 4);
     48 
     49   UpdateTextStyle();
     50 }
     51 
     52 void StatusAreaButton::PaintButton(gfx::Canvas* canvas, PaintButtonMode mode) {
     53   if (state() == BS_PUSHED) {
     54     // Apply 10% white when pushed down.
     55     canvas->FillRectInt(SkColorSetARGB(0x19, 0xFF, 0xFF, 0xFF),
     56         0, 0, width(), height());
     57   }
     58 
     59   if (use_menu_button_paint_) {
     60     views::MenuButton::PaintButton(canvas, mode);
     61   } else {
     62     canvas->DrawBitmapInt(icon(), horizontal_padding(), 0);
     63     OnPaintFocusBorder(canvas);
     64   }
     65 }
     66 
     67 void StatusAreaButton::SetText(const std::wstring& text) {
     68   // TextButtons normally remember the max text size, so the button's preferred
     69   // size will always be as large as the largest text ever put in it.
     70   // We clear that max text size, so we can adjust the size to fit the text.
     71   // The order is important.  ClearMaxTextSize sets the size to that of the
     72   // current text, so it must be called after SetText.
     73   views::MenuButton::SetText(text);
     74   ClearMaxTextSize();
     75   PreferredSizeChanged();
     76 }
     77 
     78 bool StatusAreaButton::Activate() {
     79   if (active_) {
     80     return views::MenuButton::Activate();
     81   } else {
     82     return true;
     83   }
     84 }
     85 
     86 gfx::Size StatusAreaButton::GetPreferredSize() {
     87   gfx::Insets insets = views::MenuButton::GetInsets();
     88   gfx::Size prefsize(icon_width() + insets.width(),
     89                      icon_height() + insets.height());
     90 
     91   // Adjusts size when use menu button paint.
     92   if (use_menu_button_paint_) {
     93     gfx::Size menu_button_size = views::MenuButton::GetPreferredSize();
     94     prefsize.SetSize(
     95       std::max(prefsize.width(), menu_button_size.width()),
     96       std::max(prefsize.height(), menu_button_size.height())
     97     );
     98 
     99     // Shift 1-pixel down for odd number of pixels in vertical space.
    100     if ((prefsize.height() - menu_button_size.height()) % 2) {
    101       insets_.Set(insets.top() + 1, insets.left(),
    102           insets.bottom(), insets.right());
    103     }
    104   }
    105 
    106   // Add padding.
    107   prefsize.Enlarge(2 * horizontal_padding(), 0);
    108 
    109   return prefsize;
    110 }
    111 
    112 gfx::Insets StatusAreaButton::GetInsets() const {
    113   return insets_;
    114 }
    115 
    116 void StatusAreaButton::OnThemeChanged() {
    117   UpdateTextStyle();
    118 }
    119 
    120 void StatusAreaButton::UpdateTextStyle() {
    121   ClearEmbellishing();
    122   switch (host_->GetTextStyle()) {
    123     case StatusAreaHost::kWhitePlain:
    124       SetEnabledColor(kWhitePlainTextColor);
    125       break;
    126     case StatusAreaHost::kWhiteHaloed:
    127       SetEnabledColor(kWhiteHaloedTextColor);
    128       SetTextHaloColor(kWhiteHaloedHaloColor);
    129       break;
    130     case StatusAreaHost::kGrayEmbossed:
    131       SetEnabledColor(kGrayEmbossedTextColor);
    132       SetTextShadowColors(kGrayEmbossedShadowColor, kGrayEmbossedShadowColor);
    133       SetTextShadowOffset(0, 1);
    134       break;
    135   }
    136 }
    137 
    138 }  // namespace chromeos
    139