Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 1 | // Copyright (c) 2012 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/common/badge_util.h" |
| 6 | |
| 7 | #include "base/logging.h" |
Torne (Richard Coles) | 868fa2f | 2013-06-11 10:57:03 +0100 | [diff] [blame] | 8 | #include "base/strings/utf_string_conversions.h" |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 9 | #include "grit/ui_resources.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 10 | #include "third_party/skia/include/core/SkPaint.h" |
| 11 | #include "third_party/skia/include/core/SkTypeface.h" |
| 12 | #include "ui/base/resource/resource_bundle.h" |
| 13 | #include "ui/gfx/canvas.h" |
| 14 | #include "ui/gfx/font.h" |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 15 | #include "ui/gfx/rect.h" |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 16 | #include "ui/gfx/size.h" |
| 17 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 18 | namespace { |
| 19 | |
| 20 | // Different platforms need slightly different constants to look good. |
| 21 | #if defined(OS_LINUX) && !defined(TOOLKIT_VIEWS) |
| 22 | const float kTextSize = 9.0; |
| 23 | const int kBottomMarginBrowserAction = 0; |
| 24 | const int kBottomMarginPageAction = 2; |
| 25 | const int kPadding = 2; |
| 26 | const int kTopTextPadding = 0; |
| 27 | #elif defined(OS_LINUX) && defined(TOOLKIT_VIEWS) |
| 28 | const float kTextSize = 8.0; |
Ben Murdoch | effb81e | 2014-03-31 11:51:25 +0100 | [diff] [blame^] | 29 | const int kBottomMarginBrowserAction = 0; |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 30 | const int kBottomMarginPageAction = 2; |
| 31 | const int kPadding = 2; |
| 32 | const int kTopTextPadding = 1; |
| 33 | #elif defined(OS_MACOSX) |
| 34 | const float kTextSize = 9.0; |
| 35 | const int kBottomMarginBrowserAction = 5; |
| 36 | const int kBottomMarginPageAction = 2; |
| 37 | const int kPadding = 2; |
| 38 | const int kTopTextPadding = 0; |
| 39 | #else |
| 40 | const float kTextSize = 10; |
Ben Murdoch | effb81e | 2014-03-31 11:51:25 +0100 | [diff] [blame^] | 41 | const int kBottomMarginBrowserAction = 0; |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 42 | const int kBottomMarginPageAction = 2; |
| 43 | const int kPadding = 2; |
| 44 | // The padding between the top of the badge and the top of the text. |
| 45 | const int kTopTextPadding = -1; |
| 46 | #endif |
| 47 | |
| 48 | const int kBadgeHeight = 11; |
| 49 | const int kMaxTextWidth = 23; |
| 50 | |
| 51 | // The minimum width for center-aligning the badge. |
| 52 | const int kCenterAlignThreshold = 20; |
| 53 | |
| 54 | } // namespace |
| 55 | |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 56 | namespace badge_util { |
| 57 | |
| 58 | SkPaint* GetBadgeTextPaintSingleton() { |
| 59 | #if defined(OS_MACOSX) |
| 60 | const char kPreferredTypeface[] = "Helvetica Bold"; |
| 61 | #else |
| 62 | const char kPreferredTypeface[] = "Arial"; |
| 63 | #endif |
| 64 | |
| 65 | static SkPaint* text_paint = NULL; |
| 66 | if (!text_paint) { |
| 67 | text_paint = new SkPaint; |
| 68 | text_paint->setAntiAlias(true); |
| 69 | text_paint->setTextAlign(SkPaint::kLeft_Align); |
| 70 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 71 | skia::RefPtr<SkTypeface> typeface = skia::AdoptRef( |
| 72 | SkTypeface::CreateFromName(kPreferredTypeface, SkTypeface::kBold)); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 73 | // Skia doesn't do any font fallback---if the user is missing the font then |
| 74 | // typeface will be NULL. If we don't do manual fallback then we'll crash. |
| 75 | if (typeface) { |
| 76 | text_paint->setFakeBoldText(true); |
| 77 | } else { |
| 78 | // Fall back to the system font. We don't bold it because we aren't sure |
| 79 | // how it will look. |
| 80 | // For the most part this code path will only be hit on Linux systems |
| 81 | // that don't have Arial. |
| 82 | ResourceBundle& rb = ResourceBundle::GetSharedInstance(); |
| 83 | const gfx::Font& base_font = rb.GetFont(ResourceBundle::BaseFont); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 84 | typeface = skia::AdoptRef(SkTypeface::CreateFromName( |
| 85 | base_font.GetFontName().c_str(), SkTypeface::kNormal)); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 86 | DCHECK(typeface); |
| 87 | } |
| 88 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 89 | text_paint->setTypeface(typeface.get()); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 90 | // |text_paint| adds its own ref. Release the ref from CreateFontName. |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 91 | } |
| 92 | return text_paint; |
| 93 | } |
| 94 | |
| 95 | SkBitmap DrawBadgeIconOverlay(const SkBitmap& icon, |
| 96 | float font_size, |
Torne (Richard Coles) | a3f6a49 | 2013-12-18 16:25:09 +0000 | [diff] [blame] | 97 | const base::string16& text, |
| 98 | const base::string16& fallback) { |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 99 | const int kMinPadding = 1; |
| 100 | |
| 101 | // Calculate the proper style/text overlay to render on the badge. |
| 102 | SkPaint* paint = badge_util::GetBadgeTextPaintSingleton(); |
| 103 | paint->setTextSize(SkFloatToScalar(font_size)); |
| 104 | paint->setColor(SK_ColorWHITE); |
| 105 | |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 106 | std::string badge_text = base::UTF16ToUTF8(text); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 107 | |
| 108 | // See if the text will fit - otherwise use a default. |
| 109 | SkScalar text_width = paint->measureText(badge_text.c_str(), |
| 110 | badge_text.size()); |
| 111 | |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 112 | if (SkScalarRoundToInt(text_width) > (icon.width() - kMinPadding * 2)) { |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 113 | // String is too large - use the alternate text. |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 114 | badge_text = base::UTF16ToUTF8(fallback); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 115 | text_width = paint->measureText(badge_text.c_str(), badge_text.size()); |
| 116 | } |
| 117 | |
| 118 | // When centering the text, we need to make sure there are an equal number |
| 119 | // of pixels on each side as otherwise the text looks off-center. So if the |
| 120 | // padding would be uneven, clip one pixel off the right side. |
| 121 | int badge_width = icon.width(); |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 122 | if ((SkScalarRoundToInt(text_width) % 1) != (badge_width % 1)) |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 123 | badge_width--; |
| 124 | |
| 125 | // Render the badge bitmap and overlay into a canvas. |
| 126 | scoped_ptr<gfx::Canvas> canvas(new gfx::Canvas( |
Torne (Richard Coles) | 68043e1 | 2013-09-26 13:24:57 +0100 | [diff] [blame] | 127 | gfx::Size(badge_width, icon.height()), 1.0f, false)); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 128 | canvas->DrawImageInt(gfx::ImageSkia::CreateFrom1xBitmap(icon), 0, 0); |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 129 | |
| 130 | // Draw the text overlay centered horizontally and vertically. Skia expects |
| 131 | // us to specify the lower left coordinate of the text box, which is why we |
| 132 | // add 'font_size - 1' to the height. |
| 133 | SkScalar x = (badge_width - text_width)/2; |
| 134 | SkScalar y = (icon.height() - font_size)/2 + font_size - 1; |
| 135 | canvas->sk_canvas()->drawText( |
| 136 | badge_text.c_str(), badge_text.size(), x, y, *paint); |
| 137 | |
| 138 | // Return the generated image. |
| 139 | return canvas->ExtractImageRep().sk_bitmap(); |
| 140 | } |
| 141 | |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 142 | void PaintBadge(gfx::Canvas* canvas, |
| 143 | const gfx::Rect& bounds, |
| 144 | const std::string& text, |
| 145 | const SkColor& text_color_in, |
| 146 | const SkColor& background_color_in, |
| 147 | int icon_width, |
| 148 | extensions::ActionInfo::Type action_type) { |
| 149 | if (text.empty()) |
| 150 | return; |
| 151 | |
| 152 | SkColor text_color = text_color_in; |
| 153 | if (SkColorGetA(text_color_in) == 0x00) |
| 154 | text_color = SK_ColorWHITE; |
| 155 | |
| 156 | SkColor background_color = background_color_in; |
| 157 | if (SkColorGetA(background_color_in) == 0x00) |
| 158 | background_color = SkColorSetARGB(255, 218, 0, 24); |
| 159 | |
| 160 | canvas->Save(); |
| 161 | |
| 162 | SkPaint* text_paint = badge_util::GetBadgeTextPaintSingleton(); |
| 163 | text_paint->setTextSize(SkFloatToScalar(kTextSize)); |
| 164 | text_paint->setColor(text_color); |
| 165 | |
| 166 | // Calculate text width. We clamp it to a max size. |
| 167 | SkScalar sk_text_width = text_paint->measureText(text.c_str(), text.size()); |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 168 | int text_width = std::min(kMaxTextWidth, SkScalarFloorToInt(sk_text_width)); |
Torne (Richard Coles) | 2a99a7e | 2013-03-28 15:31:22 +0000 | [diff] [blame] | 169 | |
| 170 | // Calculate badge size. It is clamped to a min width just because it looks |
| 171 | // silly if it is too skinny. |
| 172 | int badge_width = text_width + kPadding * 2; |
| 173 | // Force the pixel width of badge to be either odd (if the icon width is odd) |
| 174 | // or even otherwise. If there is a mismatch you get http://crbug.com/26400. |
| 175 | if (icon_width != 0 && (badge_width % 2 != icon_width % 2)) |
| 176 | badge_width += 1; |
| 177 | badge_width = std::max(kBadgeHeight, badge_width); |
| 178 | |
| 179 | // Paint the badge background color in the right location. It is usually |
| 180 | // right-aligned, but it can also be center-aligned if it is large. |
| 181 | int rect_height = kBadgeHeight; |
| 182 | int bottom_margin = |
| 183 | action_type == extensions::ActionInfo::TYPE_BROWSER ? |
| 184 | kBottomMarginBrowserAction : kBottomMarginPageAction; |
| 185 | int rect_y = bounds.bottom() - bottom_margin - kBadgeHeight; |
| 186 | int rect_width = badge_width; |
| 187 | int rect_x = (badge_width >= kCenterAlignThreshold) ? |
| 188 | bounds.x() + (bounds.width() - badge_width) / 2 : |
| 189 | bounds.right() - badge_width; |
| 190 | gfx::Rect rect(rect_x, rect_y, rect_width, rect_height); |
| 191 | |
| 192 | SkPaint rect_paint; |
| 193 | rect_paint.setStyle(SkPaint::kFill_Style); |
| 194 | rect_paint.setAntiAlias(true); |
| 195 | rect_paint.setColor(background_color); |
| 196 | canvas->DrawRoundRect(rect, 2, rect_paint); |
| 197 | |
| 198 | // Overlay the gradient. It is stretchy, so we do this in three parts. |
| 199 | ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance(); |
| 200 | gfx::ImageSkia* gradient_left = rb.GetImageSkiaNamed( |
| 201 | IDR_BROWSER_ACTION_BADGE_LEFT); |
| 202 | gfx::ImageSkia* gradient_right = rb.GetImageSkiaNamed( |
| 203 | IDR_BROWSER_ACTION_BADGE_RIGHT); |
| 204 | gfx::ImageSkia* gradient_center = rb.GetImageSkiaNamed( |
| 205 | IDR_BROWSER_ACTION_BADGE_CENTER); |
| 206 | |
| 207 | canvas->DrawImageInt(*gradient_left, rect.x(), rect.y()); |
| 208 | canvas->TileImageInt(*gradient_center, |
| 209 | rect.x() + gradient_left->width(), |
| 210 | rect.y(), |
| 211 | rect.width() - gradient_left->width() - gradient_right->width(), |
| 212 | rect.height()); |
| 213 | canvas->DrawImageInt(*gradient_right, |
| 214 | rect.right() - gradient_right->width(), rect.y()); |
| 215 | |
| 216 | // Finally, draw the text centered within the badge. We set a clip in case the |
| 217 | // text was too large. |
| 218 | rect.Inset(kPadding, 0); |
| 219 | canvas->ClipRect(rect); |
| 220 | canvas->sk_canvas()->drawText( |
| 221 | text.c_str(), text.size(), |
| 222 | SkFloatToScalar(rect.x() + |
| 223 | static_cast<float>(rect.width() - text_width) / 2), |
| 224 | SkFloatToScalar(rect.y() + kTextSize + kTopTextPadding), |
| 225 | *text_paint); |
| 226 | canvas->Restore(); |
| 227 | } |
| 228 | |
Torne (Richard Coles) | 5821806 | 2012-11-14 11:43:16 +0000 | [diff] [blame] | 229 | } // namespace badge_util |