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// Copyright (c) 2006-2008 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 "views/border.h"
#include "app/gfx/canvas.h"
#include "base/logging.h"
namespace views {
namespace {
// A simple border with a fixed thickness and single color.
class SolidBorder : public Border {
public:
SolidBorder(int thickness, SkColor color);
virtual void Paint(const View& view, gfx::Canvas* canvas) const;
virtual void GetInsets(gfx::Insets* insets) const;
private:
int thickness_;
SkColor color_;
gfx::Insets insets_;
DISALLOW_EVIL_CONSTRUCTORS(SolidBorder);
};
SolidBorder::SolidBorder(int thickness, SkColor color)
: thickness_(thickness),
color_(color),
insets_(thickness, thickness, thickness, thickness) {
}
void SolidBorder::Paint(const View& view, gfx::Canvas* canvas) const {
gfx::Rect clip_rect;
if (!canvas->GetClipRect(&clip_rect))
return; // Empty clip rectangle, nothing to paint.
// Top border.
gfx::Rect border_bounds(0, 0, view.width(), insets_.top());
if (clip_rect.Intersects(border_bounds))
canvas->FillRectInt(color_, 0, 0, view.width(), insets_.top());
// Left border.
border_bounds.SetRect(0, 0, insets_.left(), view.height());
if (clip_rect.Intersects(border_bounds))
canvas->FillRectInt(color_, 0, 0, insets_.left(), view.height());
// Bottom border.
border_bounds.SetRect(0, view.height() - insets_.bottom(),
view.width(), insets_.bottom());
if (clip_rect.Intersects(border_bounds))
canvas->FillRectInt(color_, 0, view.height() - insets_.bottom(),
view.width(), insets_.bottom());
// Right border.
border_bounds.SetRect(view.width() - insets_.right(), 0,
insets_.right(), view.height());
if (clip_rect.Intersects(border_bounds))
canvas->FillRectInt(color_, view.width() - insets_.right(), 0,
insets_.right(), view.height());
}
void SolidBorder::GetInsets(gfx::Insets* insets) const {
DCHECK(insets);
insets->Set(insets_.top(), insets_.left(), insets_.bottom(), insets_.right());
}
class EmptyBorder : public Border {
public:
EmptyBorder(int top, int left, int bottom, int right)
: top_(top), left_(left), bottom_(bottom), right_(right) {}
virtual void Paint(const View& view, gfx::Canvas* canvas) const {}
virtual void GetInsets(gfx::Insets* insets) const {
DCHECK(insets);
insets->Set(top_, left_, bottom_, right_);
}
private:
int top_;
int left_;
int bottom_;
int right_;
DISALLOW_EVIL_CONSTRUCTORS(EmptyBorder);
};
}
Border::Border() {
}
Border::~Border() {
}
// static
Border* Border::CreateSolidBorder(int thickness, SkColor color) {
return new SolidBorder(thickness, color);
}
// static
Border* Border::CreateEmptyBorder(int top, int left, int bottom, int right) {
return new EmptyBorder(top, left, bottom, right);
}
} // namespace views
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