osx: Add NativeWindow::SetSizeConstraints

This commit is contained in:
Cheng Zhao 2015-10-05 16:19:01 +08:00
parent 526cee7ec3
commit 8577f2b52f
9 changed files with 287 additions and 61 deletions

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// Copyright 2014 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 "extensions/browser/app_window/size_constraints.h"
#include <algorithm>
#include "ui/gfx/geometry/insets.h"
namespace extensions {
SizeConstraints::SizeConstraints()
: maximum_size_(kUnboundedSize, kUnboundedSize) {}
SizeConstraints::SizeConstraints(const gfx::Size& min_size,
const gfx::Size& max_size)
: minimum_size_(min_size), maximum_size_(max_size) {}
SizeConstraints::~SizeConstraints() {}
// static
gfx::Size SizeConstraints::AddFrameToConstraints(
const gfx::Size& size_constraints,
const gfx::Insets& frame_insets) {
return gfx::Size(
size_constraints.width() == kUnboundedSize
? kUnboundedSize
: size_constraints.width() + frame_insets.width(),
size_constraints.height() == kUnboundedSize
? kUnboundedSize
: size_constraints.height() + frame_insets.height());
}
gfx::Size SizeConstraints::ClampSize(gfx::Size size) const {
const gfx::Size max_size = GetMaximumSize();
if (max_size.width() != kUnboundedSize)
size.set_width(std::min(size.width(), max_size.width()));
if (max_size.height() != kUnboundedSize)
size.set_height(std::min(size.height(), max_size.height()));
size.SetToMax(GetMinimumSize());
return size;
}
bool SizeConstraints::HasMinimumSize() const {
const gfx::Size min_size = GetMinimumSize();
return min_size.width() != kUnboundedSize ||
min_size.height() != kUnboundedSize;
}
bool SizeConstraints::HasMaximumSize() const {
const gfx::Size max_size = GetMaximumSize();
return max_size.width() != kUnboundedSize ||
max_size.height() != kUnboundedSize;
}
bool SizeConstraints::HasFixedSize() const {
return !GetMinimumSize().IsEmpty() && GetMinimumSize() == GetMaximumSize();
}
gfx::Size SizeConstraints::GetMinimumSize() const {
return minimum_size_;
}
gfx::Size SizeConstraints::GetMaximumSize() const {
return gfx::Size(
maximum_size_.width() == kUnboundedSize
? kUnboundedSize
: std::max(maximum_size_.width(), minimum_size_.width()),
maximum_size_.height() == kUnboundedSize
? kUnboundedSize
: std::max(maximum_size_.height(), minimum_size_.height()));
}
void SizeConstraints::set_minimum_size(const gfx::Size& min_size) {
minimum_size_ = min_size;
}
void SizeConstraints::set_maximum_size(const gfx::Size& max_size) {
maximum_size_ = max_size;
}
} // namespace extensions

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// Copyright 2014 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 EXTENSIONS_BROWSER_APP_WINDOW_SIZE_CONSTRAINTS_H_
#define EXTENSIONS_BROWSER_APP_WINDOW_SIZE_CONSTRAINTS_H_
#include "ui/gfx/geometry/size.h"
namespace gfx {
class Insets;
}
namespace extensions {
class SizeConstraints {
public:
// The value SizeConstraints uses to represent an unbounded width or height.
// This is an enum so that it can be declared inline here.
enum { kUnboundedSize = 0 };
SizeConstraints();
SizeConstraints(const gfx::Size& min_size, const gfx::Size& max_size);
~SizeConstraints();
// Adds frame insets to a size constraint.
static gfx::Size AddFrameToConstraints(const gfx::Size& size_constraints,
const gfx::Insets& frame_insets);
// Returns the bounds with its size clamped to the min/max size.
gfx::Size ClampSize(gfx::Size size) const;
// When gfx::Size is used as a min/max size, a zero represents an unbounded
// component. This method checks whether either component is specified.
// Note we can't use gfx::Size::IsEmpty as it returns true if either width
// or height is zero.
bool HasMinimumSize() const;
bool HasMaximumSize() const;
// This returns true if all components are specified, and min and max are
// equal.
bool HasFixedSize() const;
gfx::Size GetMaximumSize() const;
gfx::Size GetMinimumSize() const;
void set_minimum_size(const gfx::Size& min_size);
void set_maximum_size(const gfx::Size& max_size);
private:
gfx::Size minimum_size_;
gfx::Size maximum_size_;
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_APP_WINDOW_SIZE_CONSTRAINTS_H_