widget/WidgetUtils.cpp
author cku <cku@mozilla.com>
Fri, 05 May 2017 17:19:43 +0800
changeset 359137 f3460d42d23cb21093146a2ace98009d581bd77a
parent 310854 564549c354b038a465c0b3fc245da3cab8753eab
child 389821 cd2a5b5cf752194818cee5f96f2ae5cdcbf3d564
permissions -rw-r--r--
Bug 1351440 - Part 2. Encapsulate DrawResult and imgIContainer::FLAG_* into imgDrawingParams, and pass it to PaintSVG. r=jwatt The DrawResult return was not in fact anything to do with the success or failure of that method, but was actually passing out a very specific piece of information about the success or failure of any imagelib drawing that may not have occurred under the various PaintSVG calls. The signature of PaintSVG is changed from DrawResult PaintSVG(...., uint32 flags); to void PaintSVG(...., imgDrawingParams& aPackage); imgDrawingParams wraps DrawResult and imgIContainer::FLAG_* as a pack, pass through PaintSVG to imagelib draw calls under beneath. MozReview-Commit-ID: IOq2evUAOQF

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * vim: sw=2 ts=8 et :
 */
/* 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/. */

#include "mozilla/WidgetUtils.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/Unused.h"
#include "nsContentUtils.h"
#include "nsIBidiKeyboard.h"
#include "nsTArray.h"
#ifdef XP_WIN
#include "WinUtils.h"
#endif
#if MOZ_WIDGET_GTK == 3
#include "mozilla/WidgetUtilsGtk.h"
#endif

namespace mozilla {

gfx::Matrix
ComputeTransformForRotation(const nsIntRect& aBounds,
                              ScreenRotation aRotation)
{
    gfx::Matrix transform;
    static const gfx::Float floatPi = static_cast<gfx::Float>(M_PI);

    switch (aRotation) {
    case ROTATION_0:
        break;
    case ROTATION_90:
        transform.PreTranslate(aBounds.width, 0);
        transform.PreRotate(floatPi / 2);
        break;
    case ROTATION_180:
        transform.PreTranslate(aBounds.width, aBounds.height);
        transform.PreRotate(floatPi);
        break;
    case ROTATION_270:
        transform.PreTranslate(0, aBounds.height);
        transform.PreRotate(floatPi * 3 / 2);
        break;
    default:
        MOZ_CRASH("Unknown rotation");
    }
    return transform;
}

gfx::Matrix
ComputeTransformForUnRotation(const nsIntRect& aBounds,
                              ScreenRotation aRotation)
{
    gfx::Matrix transform;
    static const gfx::Float floatPi = static_cast<gfx::Float>(M_PI);

    switch (aRotation) {
    case ROTATION_0:
        break;
    case ROTATION_90:
        transform.PreTranslate(0, aBounds.height);
        transform.PreRotate(floatPi * 3 / 2);
        break;
    case ROTATION_180:
        transform.PreTranslate(aBounds.width, aBounds.height);
        transform.PreRotate(floatPi);
        break;
    case ROTATION_270:
        transform.PreTranslate(aBounds.width, 0);
        transform.PreRotate(floatPi / 2);
        break;
    default:
        MOZ_CRASH("Unknown rotation");
    }
    return transform;
}

nsIntRect RotateRect(nsIntRect aRect,
                     const nsIntRect& aBounds,
                     ScreenRotation aRotation)
{
  switch (aRotation) {
    case ROTATION_0:
      return aRect;
    case ROTATION_90:
      return nsIntRect(aRect.y,
                       aBounds.width - aRect.x - aRect.width,
                       aRect.height, aRect.width);
    case ROTATION_180:
      return nsIntRect(aBounds.width - aRect.x - aRect.width,
                       aBounds.height - aRect.y - aRect.height,
                       aRect.width, aRect.height);
    case ROTATION_270:
      return nsIntRect(aBounds.height - aRect.y - aRect.height,
                       aRect.x,
                       aRect.height, aRect.width);
    default:
      MOZ_CRASH("Unknown rotation");
  }
}

namespace widget {

uint32_t
WidgetUtils::IsTouchDeviceSupportPresent()
{
#ifdef XP_WIN
  return WinUtils::IsTouchDeviceSupportPresent();
#elif MOZ_WIDGET_GTK == 3
  return WidgetUtilsGTK::IsTouchDeviceSupportPresent();
#else
  return 0;
#endif
}

// static
void
WidgetUtils::SendBidiKeyboardInfoToContent()
{
  nsCOMPtr<nsIBidiKeyboard> bidiKeyboard = nsContentUtils::GetBidiKeyboard();
  if (!bidiKeyboard) {
    return;
  }

  bool rtl;
  if (NS_FAILED(bidiKeyboard->IsLangRTL(&rtl))) {
    return;
  }
  bool bidiKeyboards = false;
  bidiKeyboard->GetHaveBidiKeyboards(&bidiKeyboards);

  nsTArray<dom::ContentParent*> children;
  dom::ContentParent::GetAll(children);
  for (uint32_t i = 0; i < children.Length(); i++) {
    Unused << children[i]->SendBidiKeyboardNotify(rtl, bidiKeyboards);
  }
}

} // namespace widget
} // namespace mozilla