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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/apps/app_service/app_icon/dip_px_util.h"
#include "base/check_op.h"
#include "ui/base/resource/resource_scale_factor.h"
#include "ui/display/display.h"
#include "ui/display/screen.h"
#include "ui/gfx/geometry/size.h"
// TODO(crbug.com/40569217): plumb through enough information to use one of
// Screen::GetDisplayNearest{Window/View/Point}. That way in multi-monitor
// setups where one screen is hidpi and the other one isn't, we don't always do
// the wrong thing.
namespace {
float GetPrimaryDisplayScaleFactor() {
display::Screen* screen = display::Screen::GetScreen();
if (!screen) {
return 1.0f;
}
return screen->GetPrimaryDisplay().device_scale_factor();
}
int ConvertBetweenDipAndPx(int value,
bool quantize_to_supported_scale_factor,
bool invert) {
float scale = GetPrimaryDisplayScaleFactor();
if (quantize_to_supported_scale_factor) {
scale = ui::GetScaleForResourceScaleFactor(
ui::GetSupportedResourceScaleFactor(scale));
}
DCHECK_NE(0.0f, scale);
if (invert) {
scale = 1 / scale;
}
return apps_util::ConvertDipToPxForScale(value, scale);
}
} // namespace
namespace apps_util {
int ConvertDipToPx(int dip, bool quantize_to_supported_scale_factor) {
return ConvertBetweenDipAndPx(dip, quantize_to_supported_scale_factor, false);
}
int ConvertPxToDip(int px, bool quantize_to_supported_scale_factor) {
return ConvertBetweenDipAndPx(px, quantize_to_supported_scale_factor, true);
}
int ConvertDipToPxForScale(int dip, float scale) {
return gfx::ScaleToFlooredSize(gfx::Size(dip, dip), scale).width();
}
ui::ResourceScaleFactor GetPrimaryDisplayUIScaleFactor() {
return ui::GetSupportedResourceScaleFactor(GetPrimaryDisplayScaleFactor());
}
} // namespace apps_util
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