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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/views/tabs/fade_label_view.h"
#include <string_view>
#include "chrome/browser/ui/views/tabs/filename_elider.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/gfx/canvas.h"
namespace {
std::unique_ptr<FadeLabel> CreateFadeLabel(int context, int text_style) {
return std::make_unique<FadeLabel>(std::u16string(), context, text_style);
}
} // namespace
// FadeLabel
// ----------------------------------------------------------
void FadeLabel::SetData(const FadeLabelViewData& data) {
data_ = data;
std::u16string text = data.text;
const bool is_filename = data.is_filename;
SetElideBehavior(is_filename ? gfx::NO_ELIDE : data.elide);
if (is_filename) {
text = TruncateFilenameToTwoLines(text);
}
SetText(text);
}
void FadeLabel::SetFade(double percent) {
percent = std::min(1.0, percent);
const SkAlpha alpha = base::saturated_cast<SkAlpha>(
std::numeric_limits<SkAlpha>::max() * (1.0 - percent));
SetBackgroundColor(SkColorSetA(GetBackgroundColor(), alpha));
SetEnabledColor(SkColorSetA(GetEnabledColor(), alpha));
}
void FadeLabel::SetPaintBackground(bool paint_background) {
paint_background_ = paint_background;
}
void FadeLabel::OnPaintBackground(gfx::Canvas* canvas) {
if (paint_background_) {
canvas->DrawColor(GetBackgroundColor());
} else {
views::Label::OnPaintBackground(canvas);
}
}
// Returns a version of the text that's middle-elided on two lines.
std::u16string FadeLabel::TruncateFilenameToTwoLines(
const std::u16string& text) const {
FilenameElider elider(CreateRenderText());
gfx::Rect text_rect = GetContentsBounds();
text_rect.Inset(-gfx::ShadowValue::GetMargin(GetShadows()));
return elider.Elide(text, text_rect);
}
BEGIN_METADATA(FadeLabel)
END_METADATA
// FadeLabelView:
// ----------------------------------------------------------
FadeLabelView::FadeLabelView(int num_lines, int context, int text_style)
: FadeView<FadeLabel, FadeLabel, FadeLabelViewData>(
CreateFadeLabel(context, text_style),
CreateFadeLabel(context, text_style)) {
if (num_lines > 1) {
primary_view_->SetMultiLine(true);
fade_out_view_->SetMultiLine(true);
primary_view_->SetMaxLines(num_lines);
fade_out_view_->SetMaxLines(num_lines);
}
fade_out_view_->SetPaintBackground(true);
}
std::u16string_view FadeLabelView::GetText() const {
return primary_view_->GetText();
}
void FadeLabelView::SetEnabledColor(ui::ColorId color) {
primary_view_->SetEnabledColor(color);
fade_out_view_->SetEnabledColor(color);
}
using FadeWrapper_Label_FadeLabelViewData =
FadeWrapper<views::Label, FadeLabelViewData>;
BEGIN_TEMPLATE_METADATA(FadeWrapper_Label_FadeLabelViewData, FadeWrapper)
END_METADATA
using FadeView_FadeLabel_FadeLabel_FadeLabelViewData =
FadeView<FadeLabel, FadeLabel, FadeLabelViewData>;
BEGIN_TEMPLATE_METADATA(FadeView_FadeLabel_FadeLabel_FadeLabelViewData,
FadeView)
END_METADATA
BEGIN_METADATA(FadeLabelView)
END_METADATA
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