1 // Copyright 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "ui/message_center/views/padded_button.h"
6
7 #include "grit/ui_resources.h"
8 #include "ui/base/resource/resource_bundle.h"
9 #include "ui/gfx/canvas.h"
10 #include "ui/message_center/message_center_style.h"
11 #include "ui/views/controls/button/image_button.h"
12 #include "ui/views/painter.h"
13
14 namespace message_center {
15
PaddedButton(views::ButtonListener * listener)16 PaddedButton::PaddedButton(views::ButtonListener* listener)
17 : views::ImageButton(listener) {
18 SetFocusable(true);
19 set_request_focus_on_press(false);
20 SetFocusPainter(views::Painter::CreateSolidFocusPainter(
21 kFocusBorderColor,
22 gfx::Insets(1, 2, 2, 2)));
23 }
24
~PaddedButton()25 PaddedButton::~PaddedButton() {
26 }
27
SetPadding(int horizontal_padding,int vertical_padding)28 void PaddedButton::SetPadding(int horizontal_padding, int vertical_padding) {
29 padding_.Set(std::max(vertical_padding, 0),
30 std::max(horizontal_padding, 0),
31 std::max(-vertical_padding, 0),
32 std::max(-horizontal_padding, 0));
33 }
34
SetNormalImage(int resource_id)35 void PaddedButton::SetNormalImage(int resource_id) {
36 SetImage(views::CustomButton::STATE_NORMAL,
37 ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
38 resource_id));
39 }
40
SetHoveredImage(int resource_id)41 void PaddedButton::SetHoveredImage(int resource_id) {
42 SetImage(views::CustomButton::STATE_HOVERED,
43 ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
44 resource_id));
45 }
46
SetPressedImage(int resource_id)47 void PaddedButton::SetPressedImage(int resource_id) {
48 SetImage(views::CustomButton::STATE_PRESSED,
49 ResourceBundle::GetSharedInstance().GetImageSkiaNamed(
50 resource_id));
51 }
52
GetPreferredSize()53 gfx::Size PaddedButton::GetPreferredSize() {
54 return gfx::Size(message_center::kControlButtonSize,
55 message_center::kControlButtonSize);
56 }
57
OnPaint(gfx::Canvas * canvas)58 void PaddedButton::OnPaint(gfx::Canvas* canvas) {
59 // This is the same implementation as ImageButton::OnPaint except
60 // that it calls ComputePaddedImagePaintPosition() instead of
61 // ComputeImagePaintPosition(), in effect overriding that private method.
62 View::OnPaint(canvas);
63 gfx::ImageSkia image = GetImageToPaint();
64 if (!image.isNull()) {
65 gfx::Point position = ComputePaddedImagePaintPosition(image);
66 if (!background_image_.isNull())
67 canvas->DrawImageInt(background_image_, position.x(), position.y());
68 canvas->DrawImageInt(image, position.x(), position.y());
69 if (!overlay_image_.isNull())
70 canvas->DrawImageInt(overlay_image_, position.x(), position.y());
71 }
72 views::Painter::PaintFocusPainter(this, canvas, focus_painter());
73 }
74
OnFocus()75 void PaddedButton::OnFocus() {
76 views::ImageButton::OnFocus();
77 ScrollRectToVisible(GetLocalBounds());
78 }
79
ComputePaddedImagePaintPosition(const gfx::ImageSkia & image)80 gfx::Point PaddedButton::ComputePaddedImagePaintPosition(
81 const gfx::ImageSkia& image) {
82 gfx::Vector2d offset;
83 gfx::Rect bounds = GetContentsBounds();
84 bounds.Inset(padding_);
85
86 if (padding_.left() == 0 && padding_.right() == 0)
87 offset.set_x((bounds.width() - image.width()) / 2); // Center align.
88 else if (padding_.right() > 0)
89 offset.set_x(bounds.width() - image.width()); // Right align.
90
91 if (padding_.top() == 0 && padding_.bottom() == 0)
92 offset.set_y((bounds.height() - image.height()) / 2); // Middle align.
93 else if (padding_.bottom() > 0)
94 offset.set_y(bounds.height() - image.height()); // Bottom align.
95
96 return bounds.origin() + offset;
97 }
98
99 } // namespace message_center
100