Remove the in-process PDF viewer from pdf/

pdf/fading_controls.cc

-// 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 "pdf/fading_controls.h"
-
-#include "base/logging.h"
-#include "base/stl_util.h"
-#include "pdf/draw_utils.h"
-#include "pdf/resource_consts.h"
-#include "ppapi/cpp/input_event.h"
-
-namespace chrome_pdf {
-
-const uint32 kFadingAlphaShift = 64;
-const uint32 kSplashFadingAlphaShift = 16;
-
-FadingControls::FadingControls()
-    : state_(NONE), current_transparency_(kOpaqueAlpha), fading_timer_id_(0),
-      current_capture_control_(kInvalidControlId),
-      fading_timeout_(kFadingTimeoutMs), alpha_shift_(kFadingAlphaShift),
-      splash_(false), splash_timeout_(0) {
-}
-
-FadingControls::~FadingControls() {
-  STLDeleteElements(&controls_);
-}
-
-bool FadingControls::CreateFadingControls(
-    uint32 id, const pp::Rect& rc, bool visible,
-    Control::Owner* owner, uint8 transparency) {
-  current_transparency_ = transparency;
-  return Control::Create(id, rc, visible, owner);
-}
-
-void FadingControls::Paint(pp::ImageData* image_data, const pp::Rect& rc) {
-  // When this control is set to invisible the individual controls are not.
-  // So we need to check for visible() here.
-  if (!visible())
-    return;
-
-  std::list<Control*>::iterator iter;
-  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
-    (*iter)->Paint(image_data, rc);
-  }
-}
-
-bool FadingControls::HandleEvent(const pp::InputEvent& event) {
-  if (!visible())
-    return false;
-
-  pp::MouseInputEvent mouse_event(event);
-  if (mouse_event.is_null())
-    return NotifyControls(event);
-
-  pp::Point pt = mouse_event.GetPosition();
-
-  bool is_mouse_click =
-      mouse_event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN ||
-      mouse_event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP;
-
-  if (rect().Contains(pt)) {
-    CancelSplashMode();
-    FadeIn();
-
-    // Eat mouse click if are invisible or just fading in.
-    // That prevents accidental clicks on the controls for touch devices.
-    bool eat_mouse_click =
-        (state_ == FADING_IN || current_transparency_ == kTransparentAlpha);
-    if (eat_mouse_click && is_mouse_click &&
-        mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT)
-      return true;  // Eat this event here.
-  }
-
-  if ((!rect().Contains(pt)) ||
-      event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE) {
-    if (!splash_)
-      FadeOut();
-    pp::MouseInputEvent event_leave(pp::MouseInputEvent(
-        owner()->GetInstance(),
-        PP_INPUTEVENT_TYPE_MOUSELEAVE,
-        event.GetTimeStamp(),
-        event.GetModifiers(),
-        mouse_event.GetButton(),
-        mouse_event.GetPosition(),
-        mouse_event.GetClickCount(),
-        mouse_event.GetMovement()));
-    return NotifyControls(event_leave);
-  }
-
-  return NotifyControls(event);
-}
-
-void FadingControls::OnTimerFired(uint32 timer_id) {
-  if (timer_id == fading_timer_id_) {
-    int32 current_alpha = static_cast<int32>(current_transparency_);
-    if (state_ == FADING_IN)
-      current_alpha += alpha_shift_;
-    else if (state_ == FADING_OUT)
-      current_alpha -= alpha_shift_;
-
-    if (current_alpha >= kOpaqueAlpha) {
-      state_ = NONE;
-      current_alpha = kOpaqueAlpha;
-    } else if (current_alpha <= kTransparentAlpha) {
-      state_ = NONE;
-      current_alpha = kTransparentAlpha;
-    }
-    current_transparency_ = static_cast<uint8>(current_alpha);
-
-    // Invalidate controls with new alpha transparency.
-    std::list<Control*>::iterator iter;
-    for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
-      // We are going to invalidate the whole FadingControls area, to
-      // allow simultaneous drawing.
-      (*iter)->AdjustTransparency(current_transparency_, false);
-    }
-    owner()->Invalidate(id(), GetControlsRect());
-
-    if (state_ != NONE)  // Fading still in progress.
-      fading_timer_id_ = owner()->ScheduleTimer(id(), fading_timeout_);
-    else
-      OnFadingComplete();
-  } else {
-    // Dispatch timer to controls.
-    std::list<Control*>::iterator iter;
-    for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
-      (*iter)->OnTimerFired(timer_id);
-    }
-  }
-}
-
-void FadingControls::EventCaptureReleased() {
-  if (current_capture_control_ != kInvalidControlId) {
-    // Remove previous catpure.
-    Control* ctrl = GetControl(current_capture_control_);
-    if (ctrl)
-      ctrl->EventCaptureReleased();
-  }
-}
-
-void FadingControls::MoveBy(const pp::Point& offset, bool invalidate) {
-  std::list<Control*>::iterator iter;
-  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
-    // We invalidate entire FadingControl later if needed.
-    (*iter)->MoveBy(offset, false);
-  }
-  Control::MoveBy(offset, invalidate);
-}
-
-void FadingControls::OnEvent(uint32 control_id, uint32 event_id, void* data) {
-  owner()->OnEvent(control_id, event_id, data);
-}
-
-void FadingControls::Invalidate(uint32 control_id, const pp::Rect& rc) {
-  owner()->Invalidate(control_id, rc);
-}
-
-uint32 FadingControls::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
-  // TODO(gene): implement timer routine properly.
-  NOTIMPLEMENTED();
-  //owner()->ScheduleTimer(control_id);
-  return 0;
-}
-
-void FadingControls::SetEventCapture(uint32 control_id, bool set_capture) {
-  if (control_id == current_capture_control_) {
-    if (!set_capture)  // Remove event capture.
-      current_capture_control_ = kInvalidControlId;
-  } else {
-    EventCaptureReleased();
-    current_capture_control_ = control_id;
-  }
-}
-
-void FadingControls::SetCursor(uint32 control_id,
-                               PP_CursorType_Dev cursor_type) {
-  owner()->SetCursor(control_id, cursor_type);
-}
-
-pp::Instance* FadingControls::GetInstance() {
-  return owner()->GetInstance();
-}
-
-bool FadingControls::AddControl(Control* control) {
-  DCHECK(control);
-  if (control->owner() != this)
-    return false;
-  if (!rect().Contains(control->rect()))
-    return false;
-
-  control->AdjustTransparency(current_transparency_, false);
-  controls_.push_back(control);
-  return true;
-}
-
-void FadingControls::RemoveControl(uint32 control_id) {
-  if (current_capture_control_ == control_id) {
-    current_capture_control_ = kInvalidControlId;
-  }
-  std::list<Control*>::iterator iter;
-  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
-    if ((*iter)->id() == control_id) {
-      delete (*iter);
-      controls_.erase(iter);
-      break;
-    }
-  }
-}
-
-Control* FadingControls::GetControl(uint32 id) {
-  std::list<Control*>::iterator iter;
-  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
-    if ((*iter)->id() == id)
-      return *iter;
-  }
-  return NULL;
-}
-
-pp::Rect FadingControls::GetControlsRect() {
-  pp::Rect rc;
-  std::list<Control*>::iterator iter;
-  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
-    rc = rc.Union((*iter)->rect());
-  }
-  return rc;
-}
-
-bool FadingControls::ExpandLeft(int offset) {
-  pp::Rect rc = rect();
-  rc.set_width(rc.width() + offset);
-  rc.set_x(rc.x() - offset);
-  if (!rc.Contains(GetControlsRect()))
-    return false;
-  // No need to invalidate since we are expanding triggering area only.
-  SetRect(rc, false);
-  return true;
-}
-
-void FadingControls::Splash(uint32 time_ms) {
-  splash_ = true;
-  splash_timeout_ = time_ms;
-  alpha_shift_ = kSplashFadingAlphaShift;
-  FadeIn();
-}
-
-bool FadingControls::NotifyControls(const pp::InputEvent& event) {
-  // First pass event to a control that current capture is set to.
-  Control* ctrl = GetControl(current_capture_control_);
-  if (ctrl) {
-    if (ctrl->HandleEvent(event))
-      return true;
-  }
-
-  std::list<Control*>::iterator iter;
-  for (iter = controls_.begin(); iter != controls_.end(); ++iter) {
-    // Now pass event to all control except control with capture,
-    // since we already passed to it above.
-    if ((*iter) != ctrl && (*iter)->HandleEvent(event))
-      return true;
-  }
-  return false;
-}
-
-void FadingControls::FadeIn() {
-  bool already_visible =
-      (state_ == NONE && current_transparency_ == kOpaqueAlpha);
-  if (state_ != FADING_IN && !already_visible) {
-    state_ = FADING_IN;
-    fading_timer_id_ = owner()->ScheduleTimer(id(), fading_timeout_);
-  }
-  if (already_visible)
-    OnFadingComplete();
-}
-
-void FadingControls::FadeOut() {
-  bool already_invisible =
-      (state_ == NONE && current_transparency_ == kTransparentAlpha);
-  if (state_ != FADING_OUT && !already_invisible) {
-    state_ = FADING_OUT;
-    fading_timer_id_ = owner()->ScheduleTimer(id(), fading_timeout_);
-  }
-  if (already_invisible)
-    OnFadingComplete();
-}
-
-void FadingControls::OnFadingComplete() {
-  DCHECK(current_transparency_ == kOpaqueAlpha ||
-      current_transparency_ == kTransparentAlpha);
-  // In the splash mode following states are possible:
-  // Fade-in complete: splash_==true, splash_timeout_ != 0
-  //   We need to schedule timer for splash_timeout_.
-  // Splash timeout complete: splash_==true, splash_timeout_ == 0
-  //   We need to fade out still using splash settings.
-  // Fade-out complete: current_transparency_ == kTransparentAlpha
-  //   We need to cancel splash mode and go back to normal settings.
-  if (splash_) {
-    if (current_transparency_ == kOpaqueAlpha) {
-      if (splash_timeout_) {
-        fading_timer_id_ = owner()->ScheduleTimer(id(), splash_timeout_);
-        splash_timeout_ = 0;
-      } else {
-        FadeOut();
-      }
-    } else {
-      CancelSplashMode();
-    }
-  }
-}
-
-void FadingControls::CancelSplashMode() {
-  splash_ = false;
-  alpha_shift_ = kFadingAlphaShift;
-}
-
-}  // namespace chrome_pdf