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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 <cmath>
#import "chrome/browser/ui/cocoa/location_bar/button_decoration.h"
#include "base/logging.h"
#import "base/mac/scoped_nsobject.h"
#import "ui/base/cocoa/appkit_utils.h"
#include "ui/base/resource/resource_bundle.h"
namespace {
NSImage* GetImageFromId(int image_id) {
return ui::ResourceBundle::GetSharedInstance().GetNativeImageNamed(image_id)
.ToNSImage();
}
bool IsValidNinePartImageIds(const ui::NinePartImageIds& object) {
return (object.top_left >= 0) &&
(object.top >= 0) &&
(object.top_right >= 0) &&
(object.left >= 0) &&
(object.center >= 0) &&
(object.right >= 0) &&
(object.bottom_left >= 0) &&
(object.bottom >= 0) &&
(object.bottom_right >= 0);
}
} // namespace
ButtonDecoration::ButtonDecoration(ui::NinePartImageIds normal_image_ids,
int normal_icon_id,
ui::NinePartImageIds hover_image_ids,
int hover_icon_id,
ui::NinePartImageIds pressed_image_ids,
int pressed_icon_id,
CGFloat max_inner_padding)
: normal_image_ids_(normal_image_ids),
hover_image_ids_(hover_image_ids),
pressed_image_ids_(pressed_image_ids),
normal_icon_id_(normal_icon_id),
hover_icon_id_(hover_icon_id),
pressed_icon_id_(pressed_icon_id),
state_(kButtonStateNormal),
max_inner_padding_(max_inner_padding) {
DCHECK(IsValidNinePartImageIds(normal_image_ids_) && normal_icon_id_ >= 0);
DCHECK(IsValidNinePartImageIds(hover_image_ids_) && hover_icon_id_ >= 0);
DCHECK(IsValidNinePartImageIds(pressed_image_ids_) && pressed_icon_id_ >= 0);
DCHECK_GE(max_inner_padding_, 0);
}
ButtonDecoration::~ButtonDecoration() {
}
void ButtonDecoration::SetButtonState(ButtonDecoration::ButtonState state) {
state_ = state;
}
ButtonDecoration::ButtonState ButtonDecoration::GetButtonState() const {
return state_;
}
bool ButtonDecoration::PreventFocus(NSPoint location) const {
return false;
}
void ButtonDecoration::SetIcon(ButtonState state, int icon_id) {
switch (state) {
case kButtonStateNormal:
normal_icon_id_ = icon_id;
break;
case kButtonStateHover:
hover_icon_id_ = icon_id;
break;
case kButtonStatePressed:
pressed_icon_id_ = icon_id;
break;
default:
NOTREACHED();
}
}
void ButtonDecoration::SetIcon(int icon_id) {
normal_icon_id_ = icon_id;
hover_icon_id_ = icon_id;
pressed_icon_id_ = icon_id;
}
void ButtonDecoration::SetBackgroundImageIds(
ui::NinePartImageIds normal_image_ids,
ui::NinePartImageIds hover_image_ids,
ui::NinePartImageIds pressed_image_ids) {
DCHECK(IsValidNinePartImageIds(normal_image_ids));
DCHECK(IsValidNinePartImageIds(hover_image_ids));
DCHECK(IsValidNinePartImageIds(pressed_image_ids));
normal_image_ids_ = normal_image_ids;
hover_image_ids_ = hover_image_ids;
pressed_image_ids_ = pressed_image_ids;
}
ui::NinePartImageIds ButtonDecoration::GetBackgroundImageIds() const {
switch (state_) {
case kButtonStateHover:
return hover_image_ids_;
case kButtonStatePressed:
return pressed_image_ids_;
case kButtonStateNormal:
default:
return normal_image_ids_;
}
}
NSImage* ButtonDecoration::GetIconImage() const {
switch (state_) {
case kButtonStateHover:
return GetImageFromId(hover_icon_id_);
case kButtonStatePressed:
return GetImageFromId(pressed_icon_id_);
case kButtonStateNormal:
default:
return GetImageFromId(normal_icon_id_);
}
}
CGFloat ButtonDecoration::GetWidthForSpace(CGFloat width) {
const ui::NinePartImageIds image_ids = GetBackgroundImageIds();
NSImage* icon = GetIconImage();
if (!icon)
return kOmittedWidth;
const CGFloat min_width = [GetImageFromId(image_ids.left) size].width +
[icon size].width +
[GetImageFromId(image_ids.right) size].width;
if (width < min_width)
return kOmittedWidth;
const CGFloat max_width = min_width + 2 * max_inner_padding_;
return std::min(width, max_width);
}
void ButtonDecoration::DrawInFrame(NSRect frame, NSView* control_view) {
const ui::NinePartImageIds image_ids = GetBackgroundImageIds();
NSImage* icon = GetIconImage();
if (!icon)
return;
ui::DrawNinePartImage(frame, image_ids, NSCompositeSourceOver, 1.0, YES);
const CGFloat x_inset =
std::floor((NSWidth(frame) - [icon size].width) / 2.0);
const CGFloat y_inset =
std::floor((NSHeight(frame) - [icon size].height) / 2.0);
[icon drawInRect:NSInsetRect(frame, x_inset, y_inset)
fromRect:NSZeroRect
operation:NSCompositeSourceOver
fraction:1.0
respectFlipped:YES
hints:nil];
}
bool ButtonDecoration::AcceptsMousePress() {
return true;
}
bool ButtonDecoration::IsDraggable() {
return false;
}
bool ButtonDecoration::OnMousePressed(NSRect frame, NSPoint location) {
return false;
}
ButtonDecoration* ButtonDecoration::AsButtonDecoration() {
return this;
}
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