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// Copyright (c) 2012 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 "chrome/browser/ui/extensions/icon_with_badge_image_source.h"
#include <algorithm>
#include <cmath>
#include <utility>
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "chrome/browser/extensions/extension_action.h"
#include "chrome/grit/theme_resources.h"
#include "third_party/skia/include/core/SkPaint.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/color_palette.h"
#include "ui/gfx/font.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/image/image_skia_operations.h"
namespace {
const int kPadding = 2;
const int kBadgeHeight = 11;
const int kMaxTextWidth = 23;
// The minimum width for center-aligning the badge.
const int kCenterAlignThreshold = 20;
gfx::ImageSkiaRep ScaleImageSkiaRep(const gfx::ImageSkiaRep& rep,
int target_width_dp,
float target_scale) {
int width_px = target_width_dp * target_scale;
return gfx::ImageSkiaRep(
skia::ImageOperations::Resize(rep.sk_bitmap(),
skia::ImageOperations::RESIZE_BEST,
width_px, width_px),
target_scale);
}
} // namespace
IconWithBadgeImageSource::Badge::Badge(const std::string& text,
SkColor text_color,
SkColor background_color)
: text(text), text_color(text_color), background_color(background_color) {}
IconWithBadgeImageSource::Badge::~Badge() {}
IconWithBadgeImageSource::IconWithBadgeImageSource(const gfx::Size& size)
: gfx::CanvasImageSource(size, false),
grayscale_(false),
paint_page_action_decoration_(false),
paint_blocked_actions_decoration_(false) {}
IconWithBadgeImageSource::~IconWithBadgeImageSource() {}
void IconWithBadgeImageSource::SetIcon(const gfx::Image& icon) {
icon_ = icon;
}
void IconWithBadgeImageSource::SetBadge(std::unique_ptr<Badge> badge) {
badge_ = std::move(badge);
}
void IconWithBadgeImageSource::Draw(gfx::Canvas* canvas) {
if (icon_.IsEmpty())
return;
gfx::ImageSkia skia = icon_.AsImageSkia();
gfx::ImageSkiaRep rep = skia.GetRepresentation(canvas->image_scale());
if (rep.scale() != canvas->image_scale()) {
skia.AddRepresentation(ScaleImageSkiaRep(
rep, ExtensionAction::ActionIconSize(), canvas->image_scale()));
}
if (grayscale_)
skia = gfx::ImageSkiaOperations::CreateHSLShiftedImage(skia, {-1, 0, 0.75});
int x_offset =
std::floor((size().width() - ExtensionAction::ActionIconSize()) / 2.0);
int y_offset =
std::floor((size().height() - ExtensionAction::ActionIconSize()) / 2.0);
canvas->DrawImageInt(skia, x_offset, y_offset);
// Draw a badge on the provided browser action icon's canvas.
PaintBadge(canvas);
if (paint_page_action_decoration_)
PaintPageActionDecoration(canvas);
if (paint_blocked_actions_decoration_)
PaintBlockedActionDecoration(canvas);
}
// Paints badge with specified parameters to |canvas|.
void IconWithBadgeImageSource::PaintBadge(gfx::Canvas* canvas) {
if (!badge_ || badge_->text.empty())
return;
SkColor text_color = SkColorGetA(badge_->text_color) == SK_AlphaTRANSPARENT
? SK_ColorWHITE
: badge_->text_color;
// Make sure the background color is opaque. See http://crbug.com/619499
SkColor background_color =
SkColorGetA(badge_->background_color) == SK_AlphaTRANSPARENT
? gfx::kGoogleBlue500
: SkColorSetA(badge_->background_color, SK_AlphaOPAQUE);
ResourceBundle* rb = &ResourceBundle::GetSharedInstance();
gfx::FontList base_font = rb->GetFontList(ResourceBundle::BaseFont)
.DeriveWithHeightUpperBound(kBadgeHeight);
base::string16 utf16_text = base::UTF8ToUTF16(badge_->text);
// See if we can squeeze a slightly larger font into the badge given the
// actual string that is to be displayed.
const int kMaxIncrementAttempts = 5;
for (size_t i = 0; i < kMaxIncrementAttempts; ++i) {
int w = 0;
int h = 0;
gfx::FontList bigger_font =
base_font.Derive(1, 0, gfx::Font::Weight::NORMAL);
gfx::Canvas::SizeStringInt(utf16_text, bigger_font, &w, &h, 0,
gfx::Canvas::NO_ELLIPSIS);
if (h > kBadgeHeight)
break;
base_font = bigger_font;
}
const int text_width =
std::min(kMaxTextWidth, canvas->GetStringWidth(utf16_text, base_font));
// Calculate badge size. It is clamped to a min width just because it looks
// silly if it is too skinny.
int badge_width = text_width + kPadding * 2;
// Force the pixel width of badge to be either odd (if the icon width is odd)
// or even otherwise. If there is a mismatch you get http://crbug.com/26400.
if (size().width() != 0 && (badge_width % 2 != size().width() % 2))
badge_width += 1;
badge_width = std::max(kBadgeHeight, badge_width);
// Calculate the badge background rect. It is usually right-aligned, but it
// can also be center-aligned if it is large.
gfx::Rect rect(badge_width >= kCenterAlignThreshold
? (size().width() - badge_width) / 2
: size().width() - badge_width,
size().height() - kBadgeHeight, badge_width, kBadgeHeight);
SkPaint rect_paint;
rect_paint.setStyle(SkPaint::kFill_Style);
rect_paint.setAntiAlias(true);
rect_paint.setColor(background_color);
// Clear part of the background icon.
gfx::Rect cutout_rect(rect);
cutout_rect.Inset(-1, -1);
SkPaint cutout_paint = rect_paint;
cutout_paint.setBlendMode(SkBlendMode::kClear);
canvas->DrawRoundRect(cutout_rect, 2, cutout_paint);
// Paint the backdrop.
canvas->DrawRoundRect(rect, 1, rect_paint);
// Paint the text.
rect.Inset(std::max(kPadding, (rect.width() - text_width) / 2),
kBadgeHeight - base_font.GetHeight(), kPadding, 0);
canvas->DrawStringRect(utf16_text, base_font, text_color, rect);
}
void IconWithBadgeImageSource::PaintPageActionDecoration(gfx::Canvas* canvas) {
static const SkColor decoration_color = SkColorSetARGB(255, 70, 142, 226);
int major_radius = std::ceil(size().width() / 5.0);
int minor_radius = std::ceil(major_radius / 2.0);
gfx::Point center_point(major_radius + 1, size().height() - (major_radius)-1);
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kFill_Style);
paint.setColor(SK_ColorTRANSPARENT);
paint.setBlendMode(SkBlendMode::kSrc);
canvas->DrawCircle(center_point, major_radius, paint);
paint.setColor(decoration_color);
canvas->DrawCircle(center_point, minor_radius, paint);
}
void IconWithBadgeImageSource::PaintBlockedActionDecoration(
gfx::Canvas* canvas) {
canvas->Save();
gfx::ImageSkia img = *ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
IDR_BLOCKED_EXTENSION_SCRIPT);
canvas->DrawImageInt(img, size().width() - img.width(), 0);
canvas->Restore();
}
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