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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 "ui/views/examples/progress_bar_example.h"
#include <algorithm>
#include "base/utf_string_conversions.h"
#include "ui/views/controls/button/text_button.h"
#include "ui/views/controls/progress_bar.h"
#include "ui/views/layout/grid_layout.h"
#include "ui/views/view.h"
namespace {
const double kStepSize = 0.1;
double ClampToMin(double percent) {
return std::min(std::max(percent, 0.0), 1.0);
}
} // namespace
namespace views {
namespace examples {
ProgressBarExample::ProgressBarExample()
: ExampleBase("Progress Bar"),
minus_button_(NULL),
plus_button_(NULL),
progress_bar_(NULL),
current_percent_(0.0) {
}
ProgressBarExample::~ProgressBarExample() {
}
void ProgressBarExample::CreateExampleView(View* container) {
GridLayout* layout = new GridLayout(container);
container->SetLayoutManager(layout);
ColumnSet* column_set = layout->AddColumnSet(0);
column_set->AddColumn(GridLayout::LEADING, GridLayout::FILL,
0, GridLayout::USE_PREF, 0, 0);
column_set->AddPaddingColumn(0, 8);
column_set->AddColumn(GridLayout::FILL, GridLayout::FILL,
1, GridLayout::USE_PREF, 0, 0);
column_set->AddPaddingColumn(0, 8);
column_set->AddColumn(GridLayout::TRAILING, GridLayout::FILL,
0, GridLayout::USE_PREF, 0, 0);
layout->StartRow(0, 0);
minus_button_ = new TextButton(this, ASCIIToUTF16("-"));
layout->AddView(minus_button_);
progress_bar_ = new ProgressBar();
layout->AddView(progress_bar_);
plus_button_ = new TextButton(this, ASCIIToUTF16("+"));
layout->AddView(plus_button_);
}
void ProgressBarExample::ButtonPressed(Button* sender, const Event& event) {
if (sender == minus_button_)
current_percent_ = ClampToMin(current_percent_ - kStepSize);
else if (sender == plus_button_)
current_percent_ = ClampToMin(current_percent_ + kStepSize);
progress_bar_->SetValue(current_percent_);
}
} // namespace examples
} // namespace views
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