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// Copyright (c) 2009 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.
#ifndef VIEWS_EXAMPLES_SCROLL_BAR_EXAMPLE_H_
#define VIEWS_EXAMPLES_SCROLL_BAR_EXAMPLE_H_
#include "base/compiler_specific.h"
#include "base/string_util.h"
#include "views/controls/button/text_button.h"
#include "views/controls/scroll_view.h"
#include "views/examples/example_base.h"
namespace examples {
class ScrollViewExample : public ExampleBase,
public views::ButtonListener {
public:
explicit ScrollViewExample(ExamplesMain* main): ExampleBase(main) {}
virtual ~ScrollViewExample() {}
virtual std::wstring GetExampleTitle() {
return L"Scroll View";
}
virtual void CreateExampleView(views::View* container) {
wide_ = new views::TextButton(this, L"Wide");
tall_ = new views::TextButton(this, L"Tall");
big_square_ = new views::TextButton(this, L"Big Square");
small_square_ = new views::TextButton(this, L"Small Square");
scroll_to_ = new views::TextButton(this, L"Scroll to");
scrollable_ = new ScrollableView();
scroll_view_ = new views::ScrollView();
scroll_view_->SetContents(scrollable_);
scrollable_->SetBounds(0, 0, 1000, 100);
scrollable_->SetColor(SK_ColorYELLOW, SK_ColorCYAN);
views::GridLayout* layout = new views::GridLayout(container);
container->SetLayoutManager(layout);
// Add scroll view.
views::ColumnSet* column_set = layout->AddColumnSet(0);
column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL, 1,
views::GridLayout::USE_PREF, 0, 0);
layout->StartRow(1, 0);
layout->AddView(scroll_view_);
// Add control buttons.
column_set = layout->AddColumnSet(1);
for (int i = 0; i < 5; i++) {
column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL, 1,
views::GridLayout::USE_PREF, 0, 0);
}
layout->StartRow(0, 1);
layout->AddView(wide_);
layout->AddView(tall_);
layout->AddView(big_square_);
layout->AddView(small_square_);
layout->AddView(scroll_to_);
}
private:
// ScrollView's content, which draws gradient color on background.
// TODO(oshima): add child views as well.
class ScrollableView : public views::View {
public:
ScrollableView() {
SetColor(SK_ColorRED, SK_ColorCYAN);
}
gfx::Size GetPreferredSize() {
return gfx::Size(width(), height());
}
void SetColor(SkColor from, SkColor to) {
set_background(
views::Background::CreateVerticalGradientBackground(from, to));
}
virtual void Layout() {
SizeToPreferredSize();
}
private:
DISALLOW_COPY_AND_ASSIGN(ScrollableView);
};
// ButtonListner implementation.
virtual void ButtonPressed(views::Button* sender, const views::Event& event) {
if (sender == wide_) {
scrollable_->SetBounds(0, 0, 1000, 100);
scrollable_->SetColor(SK_ColorYELLOW, SK_ColorCYAN);
} else if (sender == tall_) {
scrollable_->SetBounds(0, 0, 100, 1000);
scrollable_->SetColor(SK_ColorRED, SK_ColorCYAN);
} else if (sender == big_square_) {
scrollable_->SetBounds(0, 0, 1000, 1000);
scrollable_->SetColor(SK_ColorRED, SK_ColorGREEN);
} else if (sender == small_square_) {
scrollable_->SetBounds(0, 0, 100, 100);
scrollable_->SetColor(SK_ColorYELLOW, SK_ColorGREEN);
} else if (sender == scroll_to_) {
scroll_view_->ScrollContentsRegionToBeVisible(
gfx::Rect(20, 500, 1000, 500));
}
scroll_view_->Layout();
}
// Control buttons to change the size of scrollable and jump to
// predefined position.
views::TextButton* wide_, *tall_, *big_square_, *small_square_, *scroll_to_;
// The content of the scroll view.
ScrollableView* scrollable_;
// The scroll view to test.
views::ScrollView* scroll_view_;
DISALLOW_COPY_AND_ASSIGN(ScrollViewExample);
};
} // namespace examples
#endif // VIEWS_EXAMPLES_SCROLL_BAR_EXAMPLE_H_
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