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- // 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/i18n/rtl.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_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_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& name)
- : gfx::CanvasImageSource(gfx::Size(size, size)),
- icon_size_(size),
- base_image_(GetBackgroundImageForIconSize(size)) {
- // Remove RTL formatting characters, if any, that may pad the extension name.
- // See https://crbug.com/869358
- std::u16string sanitized_name = base::UTF8ToUTF16(std::string(name));
- base::i18n::UnadjustStringForLocaleDirection(&sanitized_name);
- letter_ = sanitized_name.substr(0, 1);
- }
- ExtensionIconPlaceholder::~ExtensionIconPlaceholder() {
- }
- gfx::Image ExtensionIconPlaceholder::CreateImage(
- extension_misc::ExtensionIcons size,
- const std::string& name) {
- return gfx::Image(
- gfx::ImageSkia(std::make_unique<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
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