Index: extensions/browser/extension_icon_placeholder.cc |
diff --git a/extensions/browser/extension_icon_placeholder.cc b/extensions/browser/extension_icon_placeholder.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..fc372864004694c19315af778e8637c49cbc501f |
--- /dev/null |
+++ b/extensions/browser/extension_icon_placeholder.cc |
@@ -0,0 +1,103 @@ |
+// Copyright 2015 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 "extensions/browser/extension_icon_placeholder.h" |
+ |
+#include "base/strings/string_util.h" |
+#include "base/strings/utf_string_conversions.h" |
+#include "extensions/grit/extensions_browser_resources.h" |
+#include "ui/base/resource/resource_bundle.h" |
+#include "ui/gfx/canvas.h" |
+#include "ui/gfx/codec/png_codec.h" |
+#include "ui/gfx/geometry/rect.h" |
+#include "ui/gfx/geometry/size.h" |
+#include "ui/gfx/image/canvas_image_source.h" |
+#include "ui/gfx/image/image_skia.h" |
+ |
+namespace extensions { |
+ |
+namespace { |
+ |
+// Returns the FontStyle to use for the given icon |size|. |
+ui::ResourceBundle::FontStyle GetFontStyleForIconSize( |
+ extension_misc::ExtensionIcons size) { |
+ switch (size) { |
+ case extension_misc::EXTENSION_ICON_INVALID: |
+ case extension_misc::EXTENSION_ICON_BITTY: |
+ return ui::ResourceBundle::SmallFont; |
+ case extension_misc::EXTENSION_ICON_ACTION: |
+ case extension_misc::EXTENSION_ICON_SMALLISH: |
+ case extension_misc::EXTENSION_ICON_SMALL: |
+ return ui::ResourceBundle::MediumFont; |
+ case extension_misc::EXTENSION_ICON_MEDIUM: |
+ case extension_misc::EXTENSION_ICON_LARGE: |
+ case extension_misc::EXTENSION_ICON_EXTRA_LARGE: |
+ case extension_misc::EXTENSION_ICON_GIGANTOR: |
+ return ui::ResourceBundle::LargeFont; |
+ } |
+ NOTREACHED(); |
+ return ui::ResourceBundle::MediumFont; |
+} |
+ |
+// Returns the background image to use for the given icon |size|. |
+gfx::Image GetBackgroundImageForIconSize(extension_misc::ExtensionIcons size) { |
+ int resource_id = 0; |
+ // Right now, we have resources for a 19x19 (action) and a 48x48 (extensions |
+ // page icon). The implementation of the placeholder scales these correctly, |
+ // so it's not a big deal to use these for other sizes, but if it's something |
+ // that will be done frequently, we should probably make a devoted asset for |
+ // that size. |
+ switch (size) { |
+ case extension_misc::EXTENSION_ICON_INVALID: |
+ case extension_misc::EXTENSION_ICON_BITTY: |
+ case extension_misc::EXTENSION_ICON_ACTION: |
+ case extension_misc::EXTENSION_ICON_SMALLISH: |
+ case extension_misc::EXTENSION_ICON_SMALL: |
+ resource_id = IDR_EXTENSION_ACTION_PLAIN_BACKGROUND; |
+ break; |
+ case extension_misc::EXTENSION_ICON_MEDIUM: |
+ case extension_misc::EXTENSION_ICON_LARGE: |
+ case extension_misc::EXTENSION_ICON_EXTRA_LARGE: |
+ case extension_misc::EXTENSION_ICON_GIGANTOR: |
+ resource_id = IDR_EXTENSION_ICON_PLAIN_BACKGROUND; |
+ break; |
+ } |
+ return ui::ResourceBundle::GetSharedInstance().GetImageNamed(resource_id); |
+} |
+ |
+} // namespace |
+ |
+ExtensionIconPlaceholder::ExtensionIconPlaceholder( |
+ extension_misc::ExtensionIcons size, |
+ const std::string& letter) |
+ : gfx::CanvasImageSource(gfx::Size(size, size), false), |
+ icon_size_(size), |
+ letter_(base::UTF8ToUTF16(letter.substr(0, 1))), |
+ base_image_(GetBackgroundImageForIconSize(size)) { |
+} |
+ |
+ExtensionIconPlaceholder::~ExtensionIconPlaceholder() { |
+} |
+ |
+gfx::Image ExtensionIconPlaceholder::CreateImage( |
+ extension_misc::ExtensionIcons size, |
+ const std::string& name) { |
+ return gfx::Image(gfx::ImageSkia(new ExtensionIconPlaceholder(size, name), |
+ gfx::Size(size, size))); |
+} |
+ |
+void ExtensionIconPlaceholder::Draw(gfx::Canvas* canvas) { |
+ // Draw the background image, correctly scaled. |
+ canvas->DrawImageInt(*base_image_.ToImageSkia(), 0, 0, |
+ base_image_.Size().width(), base_image_.Size().height(), |
+ 0, 0, size().width(), size().height(), true); |
+ gfx::Rect bounds(size().width(), size().height()); |
+ // Draw the letter on top. |
+ canvas->DrawStringRectWithFlags( |
+ letter_, ui::ResourceBundle::GetSharedInstance().GetFontList( |
+ GetFontStyleForIconSize(icon_size_)), |
+ SK_ColorWHITE, bounds, gfx::Canvas::TEXT_ALIGN_CENTER); |
+} |
+ |
+} // namespace extensions |