/usr/include/thunderbird/Units.h is in thunderbird-dev 1:24.4.0+build1-0ubuntu1.
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZ_UNITS_H_
#define MOZ_UNITS_H_
#include "mozilla/gfx/Point.h"
#include "mozilla/gfx/Rect.h"
#include "mozilla/gfx/ScaleFactor.h"
#include "nsDeviceContext.h"
namespace mozilla {
struct CSSPixel;
struct LayoutDevicePixel;
struct LayerPixel;
struct ScreenPixel;
typedef gfx::PointTyped<CSSPixel> CSSPoint;
typedef gfx::IntPointTyped<CSSPixel> CSSIntPoint;
typedef gfx::SizeTyped<CSSPixel> CSSSize;
typedef gfx::IntSizeTyped<CSSPixel> CSSIntSize;
typedef gfx::RectTyped<CSSPixel> CSSRect;
typedef gfx::IntRectTyped<CSSPixel> CSSIntRect;
typedef gfx::PointTyped<LayoutDevicePixel> LayoutDevicePoint;
typedef gfx::IntPointTyped<LayoutDevicePixel> LayoutDeviceIntPoint;
typedef gfx::SizeTyped<LayoutDevicePixel> LayoutDeviceSize;
typedef gfx::IntSizeTyped<LayoutDevicePixel> LayoutDeviceIntSize;
typedef gfx::RectTyped<LayoutDevicePixel> LayoutDeviceRect;
typedef gfx::IntRectTyped<LayoutDevicePixel> LayoutDeviceIntRect;
typedef gfx::PointTyped<LayerPixel> LayerPoint;
typedef gfx::IntPointTyped<LayerPixel> LayerIntPoint;
typedef gfx::SizeTyped<LayerPixel> LayerSize;
typedef gfx::IntSizeTyped<LayerPixel> LayerIntSize;
typedef gfx::RectTyped<LayerPixel> LayerRect;
typedef gfx::IntRectTyped<LayerPixel> LayerIntRect;
typedef gfx::PointTyped<ScreenPixel> ScreenPoint;
typedef gfx::IntPointTyped<ScreenPixel> ScreenIntPoint;
typedef gfx::SizeTyped<ScreenPixel> ScreenSize;
typedef gfx::IntSizeTyped<ScreenPixel> ScreenIntSize;
typedef gfx::RectTyped<ScreenPixel> ScreenRect;
typedef gfx::IntRectTyped<ScreenPixel> ScreenIntRect;
typedef gfx::ScaleFactor<CSSPixel, LayoutDevicePixel> CSSToLayoutDeviceScale;
typedef gfx::ScaleFactor<LayoutDevicePixel, CSSPixel> LayoutDeviceToCSSScale;
typedef gfx::ScaleFactor<CSSPixel, LayerPixel> CSSToLayerScale;
typedef gfx::ScaleFactor<LayerPixel, CSSPixel> LayerToCSSScale;
typedef gfx::ScaleFactor<CSSPixel, ScreenPixel> CSSToScreenScale;
typedef gfx::ScaleFactor<ScreenPixel, CSSPixel> ScreenToCSSScale;
typedef gfx::ScaleFactor<LayoutDevicePixel, LayerPixel> LayoutDeviceToLayerScale;
typedef gfx::ScaleFactor<LayerPixel, LayoutDevicePixel> LayerToLayoutDeviceScale;
typedef gfx::ScaleFactor<LayoutDevicePixel, ScreenPixel> LayoutDeviceToScreenScale;
typedef gfx::ScaleFactor<ScreenPixel, LayoutDevicePixel> ScreenToLayoutDeviceScale;
typedef gfx::ScaleFactor<LayerPixel, ScreenPixel> LayerToScreenScale;
typedef gfx::ScaleFactor<ScreenPixel, LayerPixel> ScreenToLayerScale;
typedef gfx::ScaleFactor<ScreenPixel, ScreenPixel> ScreenToScreenScale;
/*
* The pixels that content authors use to specify sizes in.
*/
struct CSSPixel {
// Conversions from app units
static CSSPoint FromAppUnits(const nsPoint& aPoint) {
return CSSPoint(NSAppUnitsToFloatPixels(aPoint.x, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSAppUnitsToFloatPixels(aPoint.y, float(nsDeviceContext::AppUnitsPerCSSPixel())));
}
static CSSRect FromAppUnits(const nsRect& aRect) {
return CSSRect(NSAppUnitsToFloatPixels(aRect.x, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSAppUnitsToFloatPixels(aRect.y, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSAppUnitsToFloatPixels(aRect.width, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSAppUnitsToFloatPixels(aRect.height, float(nsDeviceContext::AppUnitsPerCSSPixel())));
}
static CSSIntPoint FromAppUnitsRounded(const nsPoint& aPoint) {
return CSSIntPoint(NSAppUnitsToIntPixels(aPoint.x, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSAppUnitsToIntPixels(aPoint.y, float(nsDeviceContext::AppUnitsPerCSSPixel())));
}
static CSSIntRect FromAppUnitsRounded(const nsRect& aRect) {
return CSSIntRect(NSAppUnitsToIntPixels(aRect.x, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSAppUnitsToIntPixels(aRect.y, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSAppUnitsToIntPixels(aRect.width, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSAppUnitsToIntPixels(aRect.height, float(nsDeviceContext::AppUnitsPerCSSPixel())));
}
// Conversions to app units
static nsPoint ToAppUnits(const CSSPoint& aPoint) {
return nsPoint(NSFloatPixelsToAppUnits(aPoint.x, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSFloatPixelsToAppUnits(aPoint.y, float(nsDeviceContext::AppUnitsPerCSSPixel())));
}
static nsPoint ToAppUnits(const CSSIntPoint& aPoint) {
return nsPoint(NSIntPixelsToAppUnits(aPoint.x, nsDeviceContext::AppUnitsPerCSSPixel()),
NSIntPixelsToAppUnits(aPoint.y, nsDeviceContext::AppUnitsPerCSSPixel()));
}
static nsRect ToAppUnits(const CSSRect& aRect) {
return nsRect(NSFloatPixelsToAppUnits(aRect.x, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSFloatPixelsToAppUnits(aRect.y, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSFloatPixelsToAppUnits(aRect.width, float(nsDeviceContext::AppUnitsPerCSSPixel())),
NSFloatPixelsToAppUnits(aRect.height, float(nsDeviceContext::AppUnitsPerCSSPixel())));
}
};
/*
* The pixels that are referred to as "device pixels" in layout code. In
* general this is obtained by converting a value in app units value by the
* nsDeviceContext::AppUnitsPerDevPixel() value. The size of these pixels
* are affected by:
* 1) the "full zoom" (see nsPresContext::SetFullZoom)
* 2) the "widget scale" (see nsIWidget::GetDefaultScale)
*/
struct LayoutDevicePixel {
};
/*
* The pixels that layout rasterizes and delivers to the graphics code.
* These are generally referred to as "device pixels" in layout code. Layer
* pixels are affected by:
* 1) the "display resolution" (see nsIPresShell::SetResolution)
* 2) the "full zoom" (see nsPresContext::SetFullZoom)
* 3) the "widget scale" (see nsIWidget::GetDefaultScale)
*/
struct LayerPixel {
};
/*
* The pixels that are displayed on the screen.
* On non-OMTC platforms this should be equivalent to LayerPixel units.
* On OMTC platforms these may diverge from LayerPixel units temporarily,
* while an asynchronous zoom is happening, but should eventually converge
* back to LayerPixel units. Some variables (such as those representing
* chrome UI element sizes) that are not subject to content zoom should
* generally be represented in ScreenPixel units.
*/
struct ScreenPixel {
};
// Operators to apply ScaleFactors directly to Points and Rects
template<class src, class dst>
gfx::PointTyped<dst> operator*(const gfx::PointTyped<src>& aPoint, const gfx::ScaleFactor<src, dst>& aScale) {
return gfx::PointTyped<dst>(aPoint.x * aScale.scale,
aPoint.y * aScale.scale);
}
template<class src, class dst>
gfx::PointTyped<dst> operator/(const gfx::PointTyped<src>& aPoint, const gfx::ScaleFactor<dst, src>& aScale) {
return gfx::PointTyped<dst>(aPoint.x / aScale.scale,
aPoint.y / aScale.scale);
}
template<class src, class dst>
gfx::RectTyped<dst> operator*(const gfx::RectTyped<src>& aRect, const gfx::ScaleFactor<src, dst>& aScale) {
return gfx::RectTyped<dst>(aRect.x * aScale.scale,
aRect.y * aScale.scale,
aRect.width * aScale.scale,
aRect.height * aScale.scale);
}
template<class src, class dst>
gfx::RectTyped<dst> operator/(const gfx::RectTyped<src>& aRect, const gfx::ScaleFactor<dst, src>& aScale) {
return gfx::RectTyped<dst>(aRect.x / aScale.scale,
aRect.y / aScale.scale,
aRect.width / aScale.scale,
aRect.height / aScale.scale);
}
template<class src, class dst>
gfx::RectTyped<dst> operator*(const gfx::IntRectTyped<src>& aRect, const gfx::ScaleFactor<src, dst>& aScale) {
return gfx::RectTyped<dst>(float(aRect.x) * aScale.scale,
float(aRect.y) * aScale.scale,
float(aRect.width) * aScale.scale,
float(aRect.height) * aScale.scale);
}
template<class src, class dst>
gfx::RectTyped<dst> operator/(const gfx::IntRectTyped<src>& aRect, const gfx::ScaleFactor<dst, src>& aScale) {
return gfx::RectTyped<dst>(float(aRect.x) / aScale.scale,
float(aRect.y) / aScale.scale,
float(aRect.width) / aScale.scale,
float(aRect.height) / aScale.scale);
}
};
#endif
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