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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 "ui/compositor/dip_util.h"
#include "base/command_line.h"
#include "ui/compositor/compositor.h"
#include "ui/compositor/compositor_switches.h"
#include "ui/compositor/layer.h"
#include "ui/gfx/display.h"
#include "ui/gfx/point.h"
#include "ui/gfx/point_conversions.h"
#include "ui/gfx/rect.h"
#include "ui/gfx/rect_conversions.h"
#include "ui/gfx/size.h"
#include "ui/gfx/size_conversions.h"
namespace ui {
float GetDeviceScaleFactor(const Layer* layer) {
return layer->device_scale_factor();
}
gfx::Point ConvertPointToDIP(const Layer* layer,
const gfx::Point& point_in_pixel) {
return gfx::ToFlooredPoint(
gfx::ScalePoint(point_in_pixel, 1.0f / GetDeviceScaleFactor(layer)));
}
gfx::PointF ConvertPointToDIP(const Layer* layer,
const gfx::PointF& point_in_pixel) {
return gfx::ScalePoint(point_in_pixel, 1.0f / GetDeviceScaleFactor(layer));
}
gfx::Size ConvertSizeToDIP(const Layer* layer,
const gfx::Size& size_in_pixel) {
return gfx::ToFlooredSize(
gfx::ScaleSize(size_in_pixel, 1.0f / GetDeviceScaleFactor(layer)));
}
gfx::Rect ConvertRectToDIP(const Layer* layer,
const gfx::Rect& rect_in_pixel) {
float scale = 1.0f / GetDeviceScaleFactor(layer);
return gfx::ToFlooredRectDeprecated(gfx::ScaleRect(rect_in_pixel, scale));
}
gfx::Point ConvertPointToPixel(const Layer* layer,
const gfx::Point& point_in_dip) {
return gfx::ToFlooredPoint(
gfx::ScalePoint(point_in_dip, GetDeviceScaleFactor(layer)));
}
gfx::Size ConvertSizeToPixel(const Layer* layer,
const gfx::Size& size_in_dip) {
return gfx::ToFlooredSize(
gfx::ScaleSize(size_in_dip, GetDeviceScaleFactor(layer)));
}
gfx::Rect ConvertRectToPixel(const Layer* layer,
const gfx::Rect& rect_in_dip) {
float scale = GetDeviceScaleFactor(layer);
// Use ToEnclosingRect() to ensure we paint all the possible pixels
// touched. ToEnclosingRect() floors the origin, and ceils the max
// coordinate. To do otherwise (such as flooring the size) potentially
// results in rounding down and not drawing all the pixels that are
// touched.
return gfx::ToEnclosingRect(
gfx::RectF(gfx::ScalePoint(rect_in_dip.origin(), scale),
gfx::ScaleSize(rect_in_dip.size(), scale)));
}
} // namespace ui
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